2026-03-10T16:06:46Z https://soar-ir.repo.nii.ac.jp/oai

oai:soar-ir.repo.nii.ac.jp:00012497 2022-12-14T04:01:33Z 1221:1222

Molecular forms and fluorescence processes of 9-aminoacridine in thin sol-gel films Nishikiori, Hiromasa Tanaka, Nobuaki Minami, Yuki Katsuki, Akio Fujii, Tsuneo 9-Aminoacridine Fluorescence Aggregation Sol-gel reaction Silica Molecular aggregation and fluorescence processes of 9-aminoacridine (9AA) in thin silica gel films have been investigated by the steady state and time-resolved fluorescence measurements. The monomer of 9AA was the preferential species in the sol-gel reaction systems of tetraethylorthosilicate until the gelation occurred. The 9AA molecules formed the dimer or higher aggregates just after preparing the dip-coated thin film from the sol-gel system. The extent of the aggregation decreased in the film prepared from the system in which the reaction further proceeded. This result indicates that the aggregation in the prepared film was gradually prevented by the steric hindrance of the SiO2 network with the progress of the sol-gel reaction. The fluorescence properties of 9AA revealed the behavior of the molecules due to the change in the physicochemical environment in the matrix. Article JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY. 212(1):62-67 (2010) journal article ELSEVIER SCIENCE SA 2010-04-30 application/pdf JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY 1 212 62 67 1010-6030 AA10684407 https://soar-ir.repo.nii.ac.jp/record/12497/files/Molecular_forms_fluorescence_processes.pdf http://hdl.handle.net/10091/11118 https://soar-ir.repo.nii.ac.jp/records/12497 eng 10.1016/j.jphotochem.2010.03.017 https://doi.org/10.1016/j.jphotochem.2010.03.017 Copyright (c) 2010 Elsevier B.V.