Intramolecular excimer formation dynamics of bis (9-fluorenyl) methane

Young Boong Chung, Du Jeon Jang, Dongho Kim, Minyung Lee, Hyun Sook Kim, Bong Hyun Boo

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)


As a continuing effort to explore molecular systems suitable to test the one-dimensional Kramers' theory, the conformational change of bis(9-fluorenyl)methane (9-BFM) as studied in n-alkane solvents, using the time-correlated single photon counting method. The excimer formation processes of this molecule consist of a fast ( τF ≈ 1 ns) and a relatively slow (τF ≈ 5 ns) channel at ambient temperature. The viscosity dependence is mild as observed previously in bifluorene and the Arrhenius plot gives the activation energy of 3.7 kcal/mol for the slow intramolecular excimer formation process.

Original languageEnglish
Pages (from-to)453-458
Number of pages6
JournalChemical Physics Letters
Issue number5
Publication statusPublished - 1991 Jan 25

Bibliographical note

Funding Information:
This work was financially supported by the Ministry of Science and Technology and by the Korea Science and Engineering Foundation.

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry


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