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Title: Thermochromism and fluorescence in dyed PEO films

The optical absorbance spectra of solution casted pure & methyl blue (MB) dyed polyethylene oxide (PEO) films were recorded in a wavelength range from 190-1100nm at different temperatures. The absorbance was found to increases with increasing temperature. Fluorescence micrographs confirmed the interaction between polymer and dye and also revealed decreased crystallinity of the sample. Fluorescence quantum yield has been calculated with the help of fluorescence spectra.
Authors:
; ; ; ;  [1]
  1. Dept. of Physics, Mangalore University, Managalagangothri, Mangalore--574199 (India)
Publication Date:
OSTI Identifier:
22490348
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1665; Journal Issue: 1; Conference: 59. DAE solid state physics symposium 2014, Tamilnadu (India), 16-20 Dec 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ABSORPTION SPECTRA; ABSORPTION SPECTROSCOPY; DYES; FILMS; FLUORESCENCE; FLUORESCENCE SPECTROSCOPY; POLYETHYLENE GLYCOLS; TEMPERATURE DEPENDENCE; WAVELENGTHS; YIELDS