An investigation of solvent effects on the optical properties of dye IR-140 using the pump supercontinuum-probing technique

• Published in: Journal of optics. A, Pure and applied optics Pure and applied optics, 2003-09, Vol.5 (5), p.515-519
• Main Authors: Wang, Danling, Jiang, Hongbing, Wu, Songjiang, Yang, Hong, Gong, Qihuang, Xiang, Junfeng, Xu, Guangzhi
• Format: Article
• Language: English
• Subjects: Atomic and molecular physics; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Exact sciences and technology; Fluorescence and phosphorescence spectra; Fluorescence and phosphorescence; radiationless transitions, quenching (intersystem crossing, internal conversion); Molecular properties and interactions with photons; Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation; Optical properties of specific thin films; Physics; Polymers; organic compounds
• ISSN: 1464-4258; 1741-3567
• DOI: 10.1088/1464-4258/5/5/313

The effects on the optical properties of an organic tricarbocyanine dye, IR-140 (5,5'-dichloro-11-diphenylamine-3,3'-diethyl- 10,12-ethylene-thiatricarbocyanine-perchlorate), in different polar solvents, have been investigated using the pump supercontinuum-probing technique. Solvent-induced spectral shifts of the absorption and emission spectra of IR-140 have also been observed in a variety of solvents. The dependence of the spectral features on the nature of the solvent has been explained by the conformational change because of different interactions between the dye molecule and the solvent.