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The Higgins Research Laboratory

Higgins Research Lab
Kansas State University
Department of Chemistry
309 King Hall
1212 Mid-Campus Dr North
Manhattan, KS 66506

Phone Numbers
Office: 785-532-6665
Lab: 785-532-6079
Fax: 785-532-6666
Email: higgins@ksu.edu

Publications

Kansas State University (1996-present)

Electronic copies of these manuscripts may be obtained by contacting Dan Higgins.

133.  Lianjie Xue, Shiqiang Jin, Daniel A. Higgins and Takashi Ito.  Fluorescence Correlation Spectroscopy Integrated with the Maximum Entropy Method for a Better Understanding of Molecular Diffusion and Structural Heterogeneity in Ionic Liquids.  Anal. Chem.  2021, XX, XX-XX.  Submitted.

132.  Abdulhafiz Usman, Shelby L. Weatherbee, Maryanne M. Collinson, Keith L. Hohn, and Daniel A. Higgins.  Single Molecule Spectroscopy Studies of Acid-Base Chemical Gradients using Nile Red as a Probe of Local Surface Acidity.  Langmuir 2021, XX, XX-XX.  In press.

131.  Takashi Ito and Daniel A. Higgins.  Fluorescence Microscopic Investigations of Molecular Dynamics in Self-Assembled Nanostructures.  Chem. Rec. 2021, 21, 1-14. 

130.  Qinfang Liu, Judith Bautista-Gomez, Daniel A. Higgins, Jianzhong Yu, and Yulan Xiong.  LRRK2 Regulates AP2M1 Phosphorylation Cycles to Mediate Endocytosis and Dopaminergic Neurodegeneration.  Sci. Sig2021, in press.

129.  Kayesh Ashraf, Kallol Roy, Daniel A. Higgins, and Maryanne M. Collinson.  On the Importance of Silane Infusion Order on the Microscopic and Macroscopic Properties of Multifunctional Charge Gradients.  ACS Omega2020, 5, 21897-21905.

128.  Judith Bautista-Gomez, Abdulhafiz Usman, Man Zhang, Ryan J. Rafferty, Stefan H. Bossmann, Keith L. Hohn, and Daniel A. Higgins.  Fluorescence Spectroscopy Studies of Crossed Aldol Reactions: A Reactive Nile Red Dye Reveals Catalyst-Dependent Product Formation.  Catal. Sci. Technol., 2020, 10, 5579-5592.

127.  Govinda Ghimire, Mikaela Moore, Rebecca Leuschen, Shinobu Nagasaka, Naohiro Kameta, Mitsutoshi Masuda, Daniel A. Higgins, and Takashi Ito.  Influences of Hydrogen Bonding-Based Stabilization of Bolaamphiphile Layers on Molecular Diffusion within Organic Nanotubes Having Inner Carboxyl Groups.  Langmuir202036, 6145-6153. 

126.  Ruwandi Kumarasinghe, Takashi Ito, and Daniel A. Higgins.  Nanoconfinement and Mass Transport in Silica Mesopores:  the Role of Charge at the Single Molecule and Single Pore Levels.  Anal. Chem., 2020, 92, 1416-1423.

125.  Jingyi Xie, Jiayi Xu, Xiaojiao Sun, Huan Wang, Daniel A. Higgins, and Keith L. Hohn.  Exploring Microenvironment Acidity Inside the Solvent-Filled Pores of Mesoporous Silica Thin Films via Single Molecule Spectroscopy.  J. Phys. Chem. C, 2019, 123, 20333-20341.

124.  Govinda Ghimire, Roberto Espinoza, Hao Xu, Shinobu Nagasaka, Naohiro Kameta, Mitsutoshi Masuda, Daniel A. Higgins and Takashi Ito.  Diffusion Behavior of Differently Charged Molecules in Self-Assembled Organic Nanotubes Studied Using Imaging Fluorescence Correlation Spectroscopy.  Langmuir201935, 7783-7790.

123.  Herman Coceancigh, Daniel A. Higgins and Takashi Ito.  Optical Microscopic Techniques for Synthetic Polymer Characterization.  Anal. Chem.2019, 91, 405-424.  Invited Review.

122.  Judith Bautista-Gomez, Anna V. Forzano, Joshua M. Austin, Maryanne M. Collinson and Daniel A. Higgins "Vapor Phase Plotting of Organosilane Chemical Gradients", Langmuir, 201834, 9665-9672.

121.  Zi Li, Ruwandi Kumarasinghe, Maryanne M. Collinson and Daniel A. Higgins "Probing the Local Dielectric Constant of Plasmid DNA in Solution and Adsorbed on Chemically Graded Aminosilane Surfaces", J. Phys. Chem. B, 2018, 122, 2307-2313.

120. Kayesh M. Ashraf, Md Rezaul K. Khan, Daniel A. Higgins and Maryanne M. Collinson "pH and Surface Charge Switchability on Bifunctional Charge Gradients", Langmuir, 201834, 663-672.

119.  Maryanne M. Collinson and Daniel A. Higgins "Organosilane Chemical Gradients:  Progress, Properties, and Promise", Langmuir, 201733, 13719-13732.  Invited Feature Article.

118.  Hao Xu, Shinobu Nagasaka, Naohiro Kameta, Mitsutoshi Masuda, Takashi Ito and Daniel A. Higgins "Spectroscopic Imaging Studies of Nanoscale Polarity and Mass Transport Phenomena in Self-Assembled Organic Nanotubes", Phys. Chem. Chem. Phys., 201719, 20040-20048.

117.  Kayesh M. Ashraf, Chenyu Wang, Sithara S. Nair, Kenneth J. Wynne, Daniel A. Higgins and Maryanne M. Collinson "Base Layer Influence on Protonated Aminosilane Gradient Wettability", Langmuir201733, 4207-4215.

116.  Zi Li, Kayesh M. Ashraf, Maryanne M. Collinson and Daniel A. Higgins "Single Molecule Catch and Release:  Potential-Dependent Plasmid DNA Adsorption along Chemically Graded Electrode Surfaces", Langmuir201733, 8651-8662.

115.  Dol Sapkota, Khanh-Hoa Tran-Ba, Trevor Elwell-Cuddy, Daniel A. Higgins and Takashi Ito "Single-Molecule Tracking Study of the Permeability and Transverse Width of Individual Cylindrical Microdomains in Solvent-Swollen Polystyrene-block-Poly(ethylene oxide) Films", J. Phys. Chem. B2016, 120, 12177-12183.

114.  Dipak Giri, Zi Li, Kayesh M. Ashraf, Maryanne M. Collinson and Daniel A. Higgins "Molecular Combing of lambda-DNA using Self-Propelled Water Droplets on Wettability Gradient Surfaces", ACS Appl. Mater. Interfaces, 2016, 8, 24265-24272.

113.  Hao Xu, Shinobu Nagasaka, Naohiro Kameta, Mitsutoshi Masuda, Takashi Ito and Daniel A. Higgins "Imaging Fluorescence Correlation Spectroscopy Studies of Dye Diffusion in Self-Assembled Organic Nanotubes", Phys. Chem. Chem. Phys., 2016, 18, 16766-16774.

112.  Stacy L. Stegall, Kayesh M. Ashraf, Julie R. Moye, Daniel A. Higgins and Maryanne M. Collinson "Separation of Transition and Heavy Metals Using Stationary Phase Gradients and Thin Layer Chromatography", J. Chromatog. A, 20161446, 141-148.

111.  Dinusha N. Udukala, Hongwang Wang, Sebastian O. Wendel, Aruni P. Malalasekera, Thilani N. Samarakoon, Gayani Abayaweera, Matthew T. Basel, Pamela Maynez, Raquel Ortega, Yubisela Toledo, Leonie Bossmann, Colette Robinson, Katharine E. Janik, Olga B. Koper, Ping Li, Massoud Motamedi, Daniel A. Higgins, Gary Gadbury, Gaohong Zhu, Deryl L. Troyer, Stefan H. Bossmann "Early Breast Cancer Screening Using Iron/Iron Oxide-Based Nanoplatforms with sub-Femtomolar Limits of Detection", Beilstein J.Nanotechnol.20167, 364-373. 

110.  Kayesh M. Ashraf, Dipak Giri, Kenneth J. Wynne, Daniel A. Higgins and Maryanne M. Collinson "Cooperative Effects in Aligned and Opposed Multi-Component Charge Gradients Containing Strongly Acidic, Weakly Acidic and Basic Functional Groups", Langmuir, 2016, 32, 3836-3847.

109.  Ruwandi Kumarasinghe, Eric D. Higgins, Takashi Ito and Daniel A. Higgins "Spectroscopic and Polarization-Dependent Single-Molecule Tracking Reveal the One-Dimensional Diffusion Pathways in Surfactant-Templated Mesoporous Silica", J. Phys. Chem. C, 2016120, 715-723.

108. Seok Chan Park, Takashi Ito and Daniel A. Higgins "Dimensionality of Diffusion in Flow-Aligned Surfactant-Templated Mesoporous SIlica:  A Single Molecule Tracking Study of Pore Wall Permeability", J. Phys. Chem. C, 2015, 119, 26101-26110.

107. Lydia Kisley, Rachel Brunetti, Lawrence J. Tauzin, Bo Shuang, Xiyu Yi, Alec W. Kirkeminde, Daniel A. Higgins, Shimon Weiss and Christy F. Landes "Characterization of Porous Materials by Fluorescence Correlation Spectroscopy Super-Resolution Optical Fluctuation Imaging (fcsSOFI)", ACS Nano2015, 9, 9158-9166.

106. Randall Scott, Alec Kirkeminde, Maogang Gong, Jennifer Totleben, Shenqiang Ren, Christopher Tuinenga, Christopher Lewis, Hongfu Luo, Daniel Higgins and Viktor Chikan "Impact of Indium and Gallium Doping on the Photovoltaic Performance of CdSe Quantum Dot Hybrid Solar Cells", ECS Trans. 201566, 1-8.

105. Xiaojiao Sun, Jingyi Xie, Jiayi Xu, Daniel A. Higgins and Keith L. Hohn "Single Molecule Studies of Acidity Distributions in Mesoporous Aluminosilicate Thin Films", Langmuir, 2015, 31, 5667-5675.  Correction:  Langmuir201834, 3158.

104. Khanh-Hoa Tran-Ba, Daniel A. Higgins and Takashi Ito "Fluorescence Recovery After Photobleaching and Single-Molecule Tracking Measurements of Anisotropic Diffusion within Identical Regions of a Cylinder-Forming Diblock Copolymer Film", Anal. Chem., 2015, 87, 5802-5809.

103. Dipak Giri, Kayesh M. Ashraf, Maryanne M. Collinson and Daniel A. Higgins "A Single Molecule Perspective on Mass Transport in Condensed Water Layers over Gradient Self-Assembled Monolayers", J. Phys. Chem. C, 2015, 119, 9418-9428.

102. Veeran C. Dewoolkar, Balamurali Kannan, Kayesh M. Ashraf, Daniel A. Higgins and Maryanne M. Collinson "Amine-Phenyl Multi-Component Gradient Stationary Phases", J. Chromatog. A, 2015, 1410, 190-199.

101. Daniel A. Higgins, Seok Chan Park, Khanh-Hoa Tran-Ba and Takashi Ito "Single-Molecule Investigations of Morphology and Mass Transport Dynamics in Nanostructured Materials", Annu. Rev. Anal. Chem.2015, 8, 193-216.

100. Kevin C. Robben, Khanh-Hoa Tran-Ba, Takashi Ito and Daniel A. Higgins "Trajectory-Profile-Guided Single Molecule Tracking for Assignment of One-Dimensional Diffusion Trajectories", Anal. Chem., 2014, 86, 10820-10827.

99. Khanh-Hoa Tran-Ba, Daniel A. Higgins and Takashi Ito "Single-Molecule Tracking Studies of Flow-Induced Microdomain Alignment in Cylinder-Forming Polystyrene-Poly(ethylene oxide) Diblock Copolymer Films", J. Phys. Chem B, 2014, 118, 11406-11415.

98. Balamurali Kannan, Daniel A. Higgins and Maryanne M. Collinson "Chelation Gradients for the Investigation of Metal Ion Binding at Silica Surfaces", Langmuir, 2014, 30, 10019-10027.

97. Hao Xu, Christopher J. Minter, Shinobu Nagasaka, Takashi Ito and Daniel A. Higgins "Elongation, Alignment and Guided Electrophoretic Migration of ds-DNA in Flow-Aligned Hexagonal F127 Gels", J. Phys. Chem B,2014, 118, 4151-4159.

96. Dipak Giri, Chelsea N. Hanks, Maryanne M. Collinson and Daniel A. Higgins "Single Molecule Spectroscopic Imaging Studies of Polarity Gradients Prepared by Infusion-Withdrawal Dip-Coating", J. Phys. Chem C, 2014, 118, 6423-6432.

95. Hongwang Wang, Dinusha N. Udukala, Thilani N. Samarakoon, Matthew T. Basel, Mausam Kalita, Gayani Abayaweera, Harshi, Manawadu, Aruni Malalasekera, Colette Robinson, David Villanueva, Pamela Maynez, Leonie Bossmann, Elizabeth Riedy, Jenny Barriga, Ni Wang, Ping Li, Daniel A. Higgins, Gaohong, Zhu, Deryl L. Troyer and Stefan H. Bossmann "Nanoplatforms for Highly Sensitive Fluorescence Detection of Cancer-Related Proteases", Photochem. Photobiol. Sci., 2014, 13, 231-240.

94. Balamurali Kannan, Kenji Nokura, Julio C. Alvarez, Daniel A. Higgins and Maryanne M. Collinson "Fabrication of Surface Charge Gradients in Open-Tubular Capillaries and Their Characterization by Spatially Resolved Pulsed Streaming Potential Measurements", Langmuir, 2013, 29, 15260-15265.

93. Lorinc Sarkany, Jenna M. Wasylenko, Santanu Roy, Daniel A. Higgins, Christopher G. Elles and Viktor Chikan "Investigation of Fluorescence Emission from CdSe Nanorods in PMMA and P3HT/PMMA Films", J. Phys. Chem. C, 2013, 117, 18818-18828.

92. Daniel A. Higgins, Khanh-Hoa Tran-Ba and Takashi Ito "Following Single Molecules to a Better Understanding of Self-Assembled One-Dimensional Nanostructures", J. Phys. Chem. Lett., 2013, 4, 3095-3103. Invited Perspective.

91. Rajib Pramanik, Takashi Ito and Daniel A. Higgins "Molecular Length Dependence of Single Molecule Wobbling within Surfactant and Solvent Filled Silica Mesopores", J. Phys. Chem. C, 2013, 117, 15438-15446.

90. Rajib Pramanik, Takashi Ito and Daniel A. Higgins "Single Molecule Wobbling in Cylindrical Mesopores", J. Phys. Chem. C, 2013, 117, 3668-3673.

89. Seok Chan Park, Takashi Ito and Daniel A. Higgins "Single Molecule Tracking Studies of Flow-Aligned Mesoporous Silica Monoliths: Aging-Time Dependence of Pore Order", J. Phys. Chem. B, 2013, 117, 4222-4230.

88. Balamurali Kannan, Daniel A. Higgins and Maryanne M. Collinson "Aminoalkoxysilane Reactivity in Surface Amine Gradients Prepared by Controlled-Rate Infusion", Langmuir, 2012, 28, 16091-16098.

87. Bipin Pandey, Prem S. Thapa, Daniel A. Higgins and Takashi Ito "Formation of Self-Organized Nanoporous Anodic Oxide from Metallic Gallium", Langmuir, 2012, 28, 13705-13711.

86. Qin Li, Chenchen Cui, Daniel A. Higgins and Jun Li "Fluorescence Quenching Sudies of Potential-Dependent DNA Reorientation Dynamics at Glassy Carbon Electrode Surfaces", J. Am. Chem. Soc., 2012, 134, 14467-14475.

85. Khanh-Hoa Tran-Ba, Jason J. Finley, Daniel A. Higgins and Takashi Ito "Single Molecule Tracking Studies of Millimeter-Scale Cylindrical Domain Alignment in Polystyrene-Poly(ethylene oxide) Diblock Copolymer Films Induced by Solvent Vapor Penetration", J. Phys. Chem. Lett., 2012, 3, 1968-1973.

84. Shaida Ibrahim, Shinobu Nagasaka, David S. Moore, Daniel A. Higgins and Takashi Ito "Conductance and Flux Measurements within Microcapillary-Incorporated Nanoporous Monoliths Derived from Cylinder-Forming Polystyrene-Poly(Methylmethacrylate) Diblock Copolymers", ECS Trans.2012, 41, 1.

83. Mausam Kalita, Sreeram Cingarapu, Santanu Roy, Seok Chan Park, Daniel A. Higgins, Ryszard Jankowiak, Viktor Chikan, Kenneth J. Klabunde and Stefan H. Bossmann "Direct Synthesis of Aqueous Quantum Dots through 4,4'-bipyridine-Based Twin Ligand Strategy", Inorg. Chem., 2012, 51, 4521-4526.

82. Santanu Roy, Alicia Aguirre, Daniel A. Higgins and Viktor Chikan "Investigation of Charge Transfer Interactions in CdSe Nanorod P3HT/PMMA Blends by Optical Microscopy", J. Phys. Chem. C, 2012, 116, 3153-3160.

81. Balamurali Kannan, Michael Marin, Kushal Shrestha, Daniel A. Higgins and Maryanne M. Collinson "Continuous Stationary Phase Gradients for Planar Chromatographic Media", J. Chromatog. A., 2011, 1218, 9406-9413.

80. Daniel A. Higgins "Novel Optical Probes for Advanced Chemical Imaging", Anal. Chem., 2011, 83, 8048-8049.

79. Alec W. Kirkeminde, Travis Torres, Takashi Ito and Daniel A. Higgins "Multiple Diffusion Pathways in Pluronic F127 Mesophases Revealed by Single Molecule Tracking and Fluorescence Correlation Spectroscopy", J. Phys. Chem. B, 2011, 115, 12736-12743.

78. Chenchen Cui, Alec Kirkeminde, Balamurali Kannan, Maryanne M. Collinson and Daniel A. Higgins "Spatiotemporal Evolution of Fixed and Mobile Dopant Populations in Silica Thin-Film Gradients as Revealed by Single Molecule Tracking", J. Phys. Chem. C, 2011, 115, 728-735.

77. Khanh Hoa Tran Ba, Thomas A. Everett, Takashi Ito and Daniel A. Higgins "Trajectory Angle Determination in One Dimensional Single Molecule Tracking Data by Orthogonal Regression Analysis", Phys. Chem. Chem. Phys., 2011, 13, 1827-1835.

76. Balamurali Kannan, Dong Dong, Daniel A. Higgins and Maryanne M. Collinson "Profile Control in Surface Amine Gradients Prepared by Controlled-Rate Infusion", Langmuir, 2011, 27, 1867-1873.

75. Fangmao Ye, Chenchen Cui, Alec Kirkeminde, Dong Dong, Maryanne M. Collinson and Daniel A. Higgins "Fluorescence Spectroscopy Studies of Silica Film Polarity Gradients Prepared by Infusion-Withdrawal Dip-Coating", Chem. Mater., 2010, 22, 2970-2977.

74. Jeffrey J. Lange, Maryanne M. Collinson, Christopher T. Culbertson and Daniel A. Higgins "Single Molecule Studies of Oligomer Extraction and Uptake of Dyes in Poly(dimethylsiloxane) Films", Anal. Chem., 2009, 81, 10089-10096.

73. Thomas A. Everett and Daniel A. Higgins "Electrostatic Self-Assembly of Ordered Perylene-Diimide/Polyelectrolyte Nanofibers in Fluidic Devices: from Nematic Domains to Macroscopic Alignment", Langmuir, 2009, 25, 13045-13051.

72. Kurt W. Hoeman, Jeffrey J. Lange, Gregory T. Roman, Daniel A. Higgins and Christopher T. Culbertson "Electrokinetic Trapping Using Titania Nanoporous Membranes Fabricated Using Sol-Gel Chemistry on Microfluidic Devices", Electrophoresis, 2009, 30, 3160-3167.

71. Corey R. Weitzel, Thomas A. Everett and Daniel A. Higgins "Aggregation and its Influence on Macroscopic In-Plane Organization in Thin Films of Electrostatically Self-Assembled Perylene-Diimide/Polyelectrolyte Nanofibers", Langmuir, 2009, 25, 1188-1195.

70. Jeffrey J. Lange, Christopher T. Culbertson and Daniel A. Higgins "Single Molecule Studies of Solvent-Dependent Diffusion and Entrapment in Poly(dimethylsiloxane) Thin Films", Anal. Chem., 2008, 80, 9726-9734.

69. Fangmao Ye, Maryanne M. Collinson and Daniel A. Higgins "What Can Be Learned from Single Molecule Spectroscopy? Applications to Sol-Gel-Derived Silica Materials", Phys. Chem. Chem. Phys., 2009, 11, 66-82.

68. Xiao Yao, Takashi Ito and Daniel A. Higgins "Grayscale Patterning of Polymer Thin Films with Nanometer Precision by Direct-Write Multiphoton Photolithography", Langmuir, 2008, 24, 8939-8943.

67. Hanjiang Dong, Fangmao Ye, Daniel A. Higgins and Maryanne M. Collinson "Following the Growth Process in Macroporous Methylsilsesquioxane Films at the Single Pore Level by Confocal Correlation Spectroscopy", Chem. Mater., 2007, 19, 6528.

66. Maryanne M. Collinson, Daniel A. Higgins, Roshna Kommidi and Debbie Campbell-Rance "Electrodeposited Silicate Films: Importance of Supporting Electrolyte", Anal. Chem., 2008, 80, 651.

65. Shaida Ibrahim, Daniel A. Higgins and Takashi Ito "Direct-Write Multiphoton Photolithography: A Systematic Study of the Etching Behaviors in Various Commercial Polymers", Langmuir, 2007, 23, 12406.

64. Fangmao Ye, Maryanne M. Collinson and Daniel A. Higgins "Molecular Orientation and its Influence on Autocorrelation Amplitudes in Single Molecule Imaging Experiments", Anal. Chem., 2007, 79, 6465.

63. Fangmao Ye, Daniel A. Higgins and Maryanne M. Collinson "Probing Chemical Interactions at the Single Molecule Level in Mesoporous Silica Thin Films ", J. Phys. Chem. C, 2007, 111, 6772.

62. Thomas A. Everett, Amy A. Twite, Aifang Xie, Srinivas K. Battina, Duy H. Hua and Daniel A. Higgins "Preparation and Characterization of Nanofibrous Perylene-Diimide-Polyelectrolyte Composite Thin Films ", Chem. Mater., 2006, 18, 5937.

61. Aifang Xie, Takashi Ito and Daniel A. Higgins "Fabrication and Characterization of Polymer/Liquid-Crystal Composite Diffractive Optics by Multiphoton Methods", Adv. Funct. Mater., 2007, 17, 1515.

60. Daniel A. Higgins, Thomas A. Everett, Aifang Xie, Sarah M. Forman and Takashi Ito "High-Resolution Direct-Write Multiphoton Photolithography in Poly(methylmethacrylate) Films", Appl. Phys. Lett., 2006, 88, 184101.

59. A. Meredith Smythe and Daniel A. Higgins "(Role) Playing Politics in an Environmental Chemistry Lecture Course", J. Chem. Educ., 2007, 84, 241.

58. Yi Fu, Fangmao Ye, William G. Sanders, Maryanne M. Collinson and Daniel A. Higgins "Single Molecule Spectroscopy Studies of Diffusion in Mesoporous Silica Thin Films", J. Phys. Chem. B, 2006, 110, 9164.

57. Aifang Xie, Gregory T. Roman, Christopher T. Culbertson and Daniel A. Higgins "Optical Microscopy Studies of Polymer/Liquid-Crystal Diffractive Optics", Proc. SPIE., 2006, 6135, 24.

56. Jana Striova, Daniel A. Higgins and Maryanne M. Collinson "Phase Separation in Organically Modified Silicate Films as Probed by Phase-Imaging Atomic Force Microscopy", Langmuir, 2005, 21, 6137.

55. Daniel A. Higgins and Maryanne M. Collinson "Gaining Insight into the Nanoscale Properties of Sol-Gel-Derived Silicate Thin Films by Single Molecule Spectroscopy", Langmuir, 2005, 21, 9023.  Invited Feature Article.

54. Aifang Xie, Bei Liu, Jeffrey E. Hall, Sarah L. Barron and Daniel A. Higgins "Self-Assembled Photoactive Polyelectrolyte/Perylene-Diimide Composites",Langmuir, 2005, 21, 4149.

53. Daniel A. Higgins, Jeffrey E. Hall and Aifang Xie "Optical Microscopy Studies of Dynamics within Individual Polymer-Dispersed Liquid Crystal Droplets", Acc. Chem. Res., 2005, 38, 137.

52. Skylar A. Martin-Brown, Yi Fu, Ginagunta Saroja, Maryanne M. Collinson and Daniel A. Higgins "Single Molecule Studies of Diffusion by Oligomer-Bound Dyes in Organically-Modified Sol-Gel-Derived Silicate Films", Anal. Chem., 2005, 77, 486.

51. Jeffrey E. Hall and Daniel A. Higgins "Enhanced Photorefractivity from Ion-Doped Polymer-Dispersed Liquid Crystals", J. Phys. Chem. B, 2004, 108, 16050.

50. Yi Fu, Maryanne M. Collinson and Daniel A. Higgins "Single Molecule Spectroscopy Studies of Microenvironmental Acidity in Silicate Thin Films", J. Am. Chem. Soc., 2004, 126, 13838.

49. Jeffrey E. Hall and Daniel A. Higgins "Exploring Dynamics in Photorefractive Polymer-Dispersed Liquid Crystals Using Near-Field Scanning Optical Microscopy",Applications of Scanned Probe Microscopy to Polymers, ACS Symposium Series, J. D. Batteas, C. A. Michaels, G. C. Walker, eds., 2005, 897, 25.

48. Aifang Xie and Daniel A. Higgins "Electric-Field-Induced Dynamics in Radial Liquid Crystal Droplets Studied by Multiphoton-Excited Fluorescence Microscopy: Interfacial Effects and Metastable Configurations", Appl. Phys. Lett., 2004, 84, 4014.

47. David L. Wetzel, Jana Striova, Daniel A. Higgins and Maryanne M. Collinson "Synchrotron Infrared Microspectroscopy Reveals Localized Heterogeneities in an Organically Modified Silicate Film", Vibrational Spectroscopy, 2004, 35, 153.

46. Jeffrey E. Hall and Daniel A. Higgins "Exploring the Photorefractive Effect in Polymer-Dispersed Liquid Crystals using Near-Field Scanning Optical Microscopy", J. Phys. Chem. B, 2003, 107, 14211.

45. Daniel A. Higgins and Brenda J. Luther, "Watching Molecules Reorient in Liquid Crystal Droplets with Multiphoton-Excited Fluorescence Microscopy", J. Chem. Phys., 2003, 119, 3935.

44. Jeffrey E. Hall and Daniel A. Higgins, "Photorefractive Polymer-Dispersed Liquid Crystals Studied by Near-Field Scanning Optical Microscopy", Polymeric Materials Science and Engineering, 2003, 88, 186.

43. Daniel A. Higgins, "Optics Up Close and Personal", Nature Materials, 2002, 1, 83.

42. Daniel A. Higgins and Yanwen Hou, "Single Molecule Spectroscopy Used to Characterize Nanoscale Materials", Encyclopedia of Nanoscience and Nanotechnology, Marcel Dekker, 2004, p. 3575.

41. Yanwen Hou and Daniel A. Higgins, "Single Molecule Studies of Dynamics in Polymer Films and at Surfaces: Effect of Ambient Relative Humidity", J. Phys. Chem. B, 2002, 106, 10306.

40. Daniel A. Higgins, Maryanne M. Collinson, Gingunta Saroja and Angela M. Bardo "Single Molecule Spectroscopic Studies of Nanoscale Heterogeneity in Organically-Modified Silicate Thin Films", Chem. Mater., 2002, 14, 3734.

39. Xiangmin Liao and Daniel A. Higgins, "Scanning Probe Microscopy Studies of Mesostructured Nonstoichiometric Polyelectrolyte-Surfactant Complexes", Langmuir, 2002, 18, 6259.

38. Jeffrey E. Hall and Daniel A. Higgins, "A Direct Method for Monitoring Two Beam Coupling in Photorefractive Materials", Rev. Sci. Instrum., 2002, 73, 2103.

37. Xiangmin Liao and Daniel A. Higgins, "Near-Field Scanning Optical Microscopy Studies of a Fluorescent Polyelectrolyte-Surfactant Complex", Langmuir, 2001, 17, 6051.

36. Angela M. Bardo, Maryanne M. Collinson, and Daniel A. Higgins, "Nanoscale Properties and Matrix-Dopant Interactions in Dye-Doped Organically-Modified Silicate Thin Films", Chem. Mater., 2001, 13, 2713. "Erratum", Chem. Mater., 2001, 13, 3058.

35. Brenda J. Luther, Gerald H. Springer, and Daniel A. Higgins, "Templated Droplets and Ordered Arrays in Polymer Dispersed Liquid Crystal Films", Chem. Mater., 2001, 13, 2281. Artwork on the Cover of this Issue of Chem. Mater.

34. Daniel A. Higgins, Xiangmin Liao, Jeffrey Hall, and Erwen Mei, "Simultaneous Near-Field Optical Birefringence and Fluorescence Contrast Applied to the Study of Dye-Doped Polymer-Dispersed Liquid Crystals", J. Phys. Chem. B, 2001, 105, 5874.

33. Gerald H. Springer and Daniel A. Higgins, "Toroidal Droplet Formation in Polymer-Dispersed Liquid Crystal Films", J. Am. Chem. Soc., 2000, 122, 6801.

32. Erwen Mei, Angela M. Bardo, Maryanne M. Collinson, and Daniel A. Higgins, "Single Molecule Studies of Sol-Gel-Derived Silicate Films. Microenvironments and Film Drying Conditions", J. Phys. Chem. B, 2000, 104, 9973.

31. Daniel A. Higgins, "Probing the Mesoscopic Chemical and Physical Properties of Polymer-Dispersed Liquid Crystals", Adv. Mater., 2000, 12, 251.

30. Gerald H. Springer and Daniel A. Higgins, "Multiphoton-Excited Fluorescence Imaging and Photochemical Modification of Dye-Doped Polystyrene Microsphere Arrays", Chem. Mater., 2000, 12, 1372.

29. Erwen Mei and Daniel A. Higgins, " Nanometer-Scale Resolution and Depth Discrimination in Near-Field Optical Microscopy Studies of Electric-Field-Induced Molecular Reorientation Dynamics", J. Chem. Phys., 2000, 112, 7839.

28. Yanwen Hou, Angela M. Bardo, Cruz Martinez, and Daniel A. Higgins, "Characterization of Molecular Scale Environments in Polymer Films by Single Molecule Spectroscopy", J. Phys. Chem. B, 2000, 104, 212.

27. Erwen Mei and Daniel A. Higgins, "Electric-Field-Induced Ion Migration in Polymer-Dispersed Liquid Crystal Films Observed by Near-Field Scanning Optical Microscopy", Appl. Phys. Lett., 1999, 75, 430.

26. Daniel A. Higgins, Erwen Mei, and Xiangmin Liao, "Electric-Field-Induced Molecular Reorientation Dynamics by Near-Field Scanning Optical Microscopy", Proc. SPIE , 1999, 3607, 26.

25. Daniel A. Higgins and Erwen Mei, "Near-Field Scanning Optical Microscopy", In: Scanning Tunneling Microscopy and Spectroscopy, D. Bonnell, ed., Wiley. 2001 pp. 371-420.

24. Erwen Mei and Daniel A. Higgins, "Local Dynamics in Polymer-Dispersed Liquid Crystals Studied by Near-Field Scanning Optical Microscopy", Appl. Phys. Lett.,1998, 73, 3515.

23. Hanming Wang, Angela M. Bardo, Maryanne M. Collinson, and Daniel A. Higgins, "Microheterogeneity in Dye Doped Silicate and Polymer Films", J. Phys. Chem. B, 1998, 102, 7231.

22. Erwen Mei and Daniel A. Higgins, "Near-Field Scanning Optical Microscopy Studies of Electric Field Induced Molecular Reorientation Dynamics", J. Phys. Chem. A, 1998, 102, 7558.

21. Erwen Mei and Daniel A. Higgins, "Polymer-Dispersed Liquid Crystal Films Studied by Near-Field Scanning Optical Microscopy", Langmuir, 1998, 14, 1945.


University of Minnesota (1993-1996)

20. David A. Vanden Bout, Josef Kerimo, Daniel A. Higgins, and Paul F. Barbara, "Near-Field Optical Studies of Thin-Film Mesostructured Organic Materials", Acc. Chem. Res.1997, 30, 204.

19. Josef Kerimo, David M. Adams, David A. Vanden Bout, Daniel A. Higgins, and Paul F. Barbara, "Near Field Scanning Optical Microscopy/Spectroscopy (NSOM) of Advanced Organic Thin Film Materials", Inter-American Photochem. Soc. Newsletter, 1996, 19, 57.

18. J. W. Blatchford, T. L. Gustafson, A. J. Epstein, D. A. Vanden Bout, J. Kerimo, D. A. Higgins, P. F. Barbara, D. -K. Fu, T. M. Swager, A. G. MacDiarmid, "Spatially and Temporally Resolved Emission from Aggregates in Conjugated Polymers", Phys. Rev. B, 1996, 54, 3683.

17. Daniel A. Higgins, David A. Vanden Bout, Josef Kerimo, and Paul F. Barbara, "Polarization-Modulation Near Field Scanning Optical Microscopy of Mesostructured Materials", J. Phys. Chem., 1996, 100, 13794.

16. David A. Vanden Bout, Josef Kerimo, Daniel A. Higgins, and Paul F. Barbara, "Spatially Resolved Spectral Inhomogeneities in Small Molecular Crystals Studied by Near Field Scanning Optical Microscopy", J. Phys. Chem., 1996, 100, 11843.

15. Daniel A. Higgins, Josef Kerimo, David A. Vanden Bout, and Paul F. Barbara, "A Molecular Yarn: The Self Assembly of Flexible, Fluorescent Fibers Studied by Near Field Scanning Optical Microscopy", J. Am. Chem. Soc., 1996, 118, 4049.

14. Philip J. Reid, Daniel A. Higgins, and Paul F. Barbara, "Environment-Dependent Photophysics of Polymer Bound J-Aggregates Determined by Time-Resolved Fluorescence Spectroscopy and Time-Resolved Near-Field Scanning Optical Microscopy", J. Phys. Chem., 1996, 100, 3892.

13. Daniel A. Higgins, Philip J. Reid, and Paul F. Barbara, "Structure and Exciton Dynamics in J-Aggregates Studied by Polarization-Dependent Near Field Scanning Optical Microscopy", J. Phys. Chem., 1996, 100, 1174.

12. Daniel A. Higgins, and Paul F. Barbara, "Excitonic Transitions in J-Aggregates Probed by Near-Field Scanning Optical Microscopy", J. Phys. Chem.,1995, 99, 3.


University of Wisconsin (1988-1993)

11. Roberta R. Naujok, Daniel A. Higgins, Dennis G. Hanken, and Robert M. Corn, "Optical Second Harmonic Generation Measurements at the Liquid-Liquid Electrochemical Interface", J. Chem. Soc. Faraday Trans., 1995, 91, 1411.

10. Robert M. Corn and Daniel A. Higgins, "Monitoring Surface Chemistry with Optical Second Harmonic Generation", in CRC Handbook of Surface Imaging and Visualization, Hubbard, A. T. ed., CRC Press, Boca Raton, 1995, p.479.

9. Robert M. Corn and Daniel A. Higgins, "Molecular Orientation in Thin Films as Probed by Optical Second Harmonic Generation", in Practical Guide for the Surfaces, Interfacial and Micro Analysis of Materials: Characterization of Organic Thin Films, Vol. 6, Ulman, A. ed., Butterworth-Heineman, 1995, p.227.

8. Robert M. Corn and Daniel A. Higgins, "Optical Second Harmonic Generation as a Probe of Surface Phenomena", Chem. Rev., 1994, 94, 107.

7. Daniel A. Higgins, Roberta R. Naujok, and Robert M. Corn, "Second Harmonic Generation Measurements of Molecular Orientation and Coadsorption at the Interface Between Two Immiscible Electrolyte Solutions", Chem. Phys. Lett., 1993, 213, 485.

6. Kevin L. Kott, Daniel A. Higgins, Robert J. McMahon, and Robert M. Corn, "Observation of Photo-Initiated Electron Transfer at a Liquid-Liquid Interface by Optical Second Harmonic Generation", J. Am. Chem. Soc., 1993, 115, 5342.

5. Daniel A. Higgins and Robert M. Corn, "Second Harmonic Generation Studies of Adsorption at a Liquid-Liquid Electrochemical Interface", J. Phys. Chem., 1993, 97, 489.

4. Daniel A. Higgins and Robert M. Corn, "Second Harmonic Generation at Liquid-Liquid Interfaces", Proc. SPIE, 1993, 1857, 2.

3. Daniel A. Higgins, Michael B. Abrams, Shannon K. Byerly, and Robert M. Corn, "Resonant Second Harmonic Generation Studies of p-Nitrophenol Adsorption at Condensed Phase Interfaces", Langmuir, 1992, 8, 1994.

2. Daniel A. Higgins, Shannon K. Byerly, Michael B. Abrams, and Robert M. Corn, "Second Harmonic Generation Studies of Methylene Blue Orientation at Silica Surfaces", J. Phys. Chem., 1991, 95, 6984.

1. Deborah J. Campbell, Daniel A. Higgins, and Robert M. Corn, "Molecular Second Harmonic Generation Studies of Methylene Blue Chemisorbed onto a Sulfur-Modified Polycrystalline Platinum Electrode", J. Phys. Chem., 1990, 94, 3681.