Synthesis and characterization of cross-shaped p-n diblock oligomers

Hong Yu Wang, Jun Hua Wan, Hong Ji Jiang, Gui An Wen, Jia Chun Feng, Zhi Jian Zhang, Bo Peng, Wei Huang, Wei Wei

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

The cross-shaped p-n diblock oligomers based on oligothiophenes (OTs) and 1,3,4-oxadiazole (OXD) were synthesized and investigated regarding optical properties, electrochemistry, quantum chemical calculations, and intramolecular energy transfer. Since only one emission peak is observed in PL spectra of the oligomers, it is evidenced that effective energy transfer from the OXD to OTs branch. The electrochemical experiments show that almost complete spatial separation of HOMO and LUMO with the thiophene number increasing. The theoretical calculations were carried out regarding which conformer is the lowest in energy, the torsion angle between thiophene/oxadiazole and the central benzene ring, and electron densities distributions of the oligomers. Based on all data, a model for intramolecular energy-transfer process has been put forward to explain the optical properties.

Original languageEnglish
Pages (from-to)1066-1073
Number of pages8
JournalJournal of Polymer Science, Part A: Polymer Chemistry
Volume45
Issue number6
DOIs
StatePublished - 15 Mar 2007
Externally publishedYes

Keywords

  • Cross-shaped oligomers
  • Energy transfer
  • Oligothiophenes
  • p-n diblock oligomers

Fingerprint

Dive into the research topics of 'Synthesis and characterization of cross-shaped p-n diblock oligomers'. Together they form a unique fingerprint.

Cite this