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

Li Li, Cheuk Lam HO, Wai Yeung WONG*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)43-50
Number of pages8
JournalJournal of Organometallic Chemistry
Volume703
DOIs
Publication statusPublished - 15 Apr 2012

Scopus Subject Areas

  • Biochemistry
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

User-Defined Keywords

  • Bithiazole
  • Metallopolymers
  • Platinum
  • Rhenium
  • Thiophene

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