Detailed Photophysical Studies of Poly(9, 9-di-(2-ethylhexyl)-9-H-fluorene-2, 7-vinylene) in Liquid Media and Thin Films. Issue 12 (December 2022)

• Record Type: Journal Article
• Authors: Khatun, Rijia; Majhi, Koushik; Sinha, Subrata
• Is Part Of: Applied spectroscopy. Volume 76:Issue 12(2022)
• Page Start: 1471
• Page End: 1481
• Publication Date: 2022-12
• Subjects: Poly(9, 9-di-(2-ethylhexyl)-9-H-fluorene-2, 7-vinylene) -- photophysics -- fluorescence -- interchain interaction; Spectrum analysis -- Periodicals; 543.505
• DOI: 10.1177/00037028221126546
• Languages: English
• ISSNs: 0003-7028

Abstract

For the present work, solvent (toluene, o- xylene, chloroform, chlorobenzene, and 1, 2-dichloroethane) and concentration-dependent (∼10 −6 –10 −3 g ml −1 ) photophysical properties of poly(9, 9-di-(2-ethylhexyl)-9-H-fluorene-2, 7-vinylene) (PEFV) were investigated in detail in liquid media as well as thin films. Also, temperature-dependent (3–60 o C) fluorescence emission measurements of PEFV were conducted in liquid media. The steady-state and time-resolved data indicate the existence of weak interchain interaction in liquid media at high concentration. However, both ground-state aggregation and interchain interaction are present for PEFV in thin film. The interchain interaction plays a dominant role on the fluorescence emission of PEFV in thin film on the red side of the spectra. Graphical Abstract