Issue 24, 2015

Low-band gap and fluorescent poly(triphenylamine-thiazolo[5,4-d]thiazole) copolymer dye

Abstract

This study describes the synthesis, spectroscopy and band gap energy of a new poly(triphenylamine-thiazolo[5,4-d]thiazole) (p-TPTT) dye. The p-TPTT polymer was examined by GPC, 1H-NMR, FT-IR, UV-vis., fluorescence, thermal analysis (TA) and cyclic voltammetry (CV). It was found that the p-TPTT has a weigh average molecular weight (Mw) of 3596 and it has good solubility in many organic solvents. The TA results showed that the p-TPTT is a stable polymer up to 400–500 °C. The EOptg of the polymer was found to be 1.85 eV in DMSO and 1.55 eV in the solid phase. From the CV measurements, the HOMO and LUMO of the p-TPTT were obtained as −5.32 and −3.96 eV, respectively and the ECVg was measured as 1.36 eV. The p-TPTT exhibited fluorescence emissions at 500 and 522 nm. These results showed that the p-TPTT is a fluorescent and low band gap energy dye material for possible applications in LEDs and solar cells.

Graphical abstract: Low-band gap and fluorescent poly(triphenylamine-thiazolo[5,4-d]thiazole) copolymer dye

Article information

Article type
Paper
Submitted
10 Dec 2014
Accepted
06 Feb 2015
First published
06 Feb 2015

RSC Adv., 2015,5, 18710-18719

Author version available

Low-band gap and fluorescent poly(triphenylamine-thiazolo[5,4-d]thiazole) copolymer dye

U. Olgun and M. Gülfen, RSC Adv., 2015, 5, 18710 DOI: 10.1039/C4RA16152A

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