Document Type

Journal Article

Department/Unit

Department of Chemistry

Title

Versatile control of the optical bandgap in heterobimetallic polymers through complexation of bithiazole-containing polyplatinynes with ReCl(CO)5

Language

English

Abstract

A new class of soluble, solution-processable heterobimetallic platinum(II)-acetylide polymers functionalized with some rhenium(I)-bithiazole based spacers and their corresponding model complexes were synthesized and characterized. The photophysical (absorption and emission spectra), thermal and electrochemical properties of the polymers were investigated in detail. These mixed-metal PtRe polymers exhibited good thermal stability and strong low-energy broad absorption bands in the visible region. The effects of metal complexation of the bithiazole group with ReCl(CO) 5 as well as adding thiophene ring along the polymer backbone on the optical bandgaps of these organometallic polymers were examined. The bandgaps of these polymers were found to be controllable readily by chemical means and can be lowered from 2.18 to 1.89 eV as the number of thiophene ring was increased from 0 to 2. Upon coordination with Re(CO) 3Cl moiety, the optical gap of the polymer can be reduced by as large as 0.25 eV. © 2011 Elsevier B.V. All rights reserved.

Keywords

Bithiazole, Metallopolymers, Platinum, Rhenium, Thiophene

Publication Date

2012

Source Publication Title

Journal of Organometallic Chemistry

Volume

703

Start Page

43

End Page

50

Publisher

Elsevier

DOI

10.1016/j.jorganchem.2011.12.028

ISSN (print)

0022328X

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