Relationship between dynamic planarization processes and exciton delocalization in cyclic oligothiophenes

Pyosang Kim, Kyu Hyung Park, Woojae Kim, Tomoya Tamachi, Masahiko Iyoda, Dongho Kim

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

In cyclic molecular structures, while the effect of conformational disorder on exciton delocalization is well understood, the impact of dynamic planarization processes remains unclear due to a lack of detailed investigation on the associated exciton dynamics. Thus, we have investigated the exciton delocalization of π-conjugated linear and cyclic oligothiophenes in the course of dynamic planarization processes by time-resolved fluorescence spectra measurements and theoretical calculations. Especially, through a comparative analysis of linear and cyclic oligothiophenes, we found that the evolution of 0-0 and 0-1 vibronic bands is strongly related to the conformations of cyclic molecular systems, reflecting the extent of exciton delocalization. Collectively, we believe that our findings are applicable to various π-conjugated organic materials and will provide new insights into the relationship between exciton delocalization and cyclic molecular conformation. (Graph Presented)

Original languageEnglish
Pages (from-to)451-456
Number of pages6
JournalJournal of Physical Chemistry Letters
Volume6
Issue number3
DOIs
Publication statusPublished - 2015 Jan 1

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Excitons
excitons
Conformations
organic materials
Molecular structure
molecular structure
Fluorescence
LDS 751
disorders
fluorescence

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Physical and Theoretical Chemistry

Cite this

Kim, Pyosang ; Park, Kyu Hyung ; Kim, Woojae ; Tamachi, Tomoya ; Iyoda, Masahiko ; Kim, Dongho. / Relationship between dynamic planarization processes and exciton delocalization in cyclic oligothiophenes. In: Journal of Physical Chemistry Letters. 2015 ; Vol. 6, No. 3. pp. 451-456.
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Relationship between dynamic planarization processes and exciton delocalization in cyclic oligothiophenes. / Kim, Pyosang; Park, Kyu Hyung; Kim, Woojae; Tamachi, Tomoya; Iyoda, Masahiko; Kim, Dongho.

In: Journal of Physical Chemistry Letters, Vol. 6, No. 3, 01.01.2015, p. 451-456.

Research output: Contribution to journalArticle

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