Near-field fluorescence spectroscopy and photochemistry of organic mesoscopic materials |
| |
| Institution: | 1. Institute of Physics, Polish Academy of Sciences, Warsaw, Poland;2. V. Lashkaryov Institute of Semiconductor Physics, National Academy of Sciences of Ukraine, Kyiv, Ukraine;1. Tohoku University, New Industry Creation Hatchery Center, 6-6-10 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8579, Japan;2. C&A Corporation, T-Biz, 6-6-10 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8579, Japan;3. Tohoku University, Institute for Material Reseach, 2-1-1 Katahira Aoba-ku, Sendai, Miyagi 980-8577, Japan;4. Institute of Physics AS CR, Cukrovarnicka 10, 16253 Prague, Czech Republic;1. B. Verkin Institute for Low Temperature Physics and Engineering, National Academy of Sciences of Ukraine, 47 Nauki Avenue, 61103 Kharkov, Ukraine;2. Department of Chemistry and Biochemistry, University of Arizona, Tucson, AZ 85721, USA;1. Institute of Environmental Sciences, Department of Chemistry, Shanxi University, Taiyuan, 030006, China;2. Institute of Molecular Functional Materials and Department of Chemistry, Hong Kong Baptist University, Waterloo Road, Hong Kong, China;3. Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China;4. College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, China;5. Institute of Advanced Materials, Fuzhou University, Fuzhou, Fujian, 350002, China;1. Institute of Spectroscopy, Russian Academy of Science, Moscow, Troitsk 142190, Russia;2. Scuola Normale Superiore and CNISM, Piazza dei Cavalieri, 56126 Pisa, Italy |
| |
| Abstract: | In this Review, an emerging research field of near-field fluorescence and photochemistry studies on molecular materials is introduced and relevant background, instrumentation, attractive topics, and future perspectives are discussed. Principles of near-field scanning optical microscope and technically important points are described, and our picosecond near-field fluorescence microspectroscopic system is explained. Its high performance of 100 nm spatial, a few ps temporal, and 1 nm spectral resolutions makes it possible to correlate topography, fluorescence image, fluorescence spectrum, and fluorescence rise and decay curve with each other. Near-field fluorescence spectroscopy reveals thickness-dependent fluorescence spectra of tetracene microcrystals, relations between photophysics and morphology of charge transfer microcrystals, and inhomogeneous inner structure of single microcrystals in anthracene-tetracene films. Similar fluorescence and morphology studies are described for polymer films, Langmuir-Blodgett films, and J aggregates. Some anthracene solids show interesting photothermal and photochemical nanometer morphological changes, while photoisomerization in organic crystals, and photolithography and ablation of polymer films upon near-field excitation are introduced. Future perspectives near-field excitation with shorter wavelength and/or higher intensity and various kinds of pump-probe measurement are discussed in view of photochemistry studies. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
