Electronic structures of organic salt DMTSA-BF4 using photoelectron spectromicroscopy

Yuichi Haruyama, Toyohiko Kinoshita, Kazuo Takimiya, Tetsuo Otsubo, Chikako Nakano, Kyuya Yakushi

Research output: Contribution to journalConference articlepeer-review

3 Citations (Scopus)


The electronic structures of organic salt DMTSA-BF4, where DMTSA is 2,3-dimethyltetraseleno-anthracene, have been studied with photoelectron spectromicroscopy at various photon energies. The atomic orbital characters of the spectral features observed in the valence band region were determined from the photon energy dependence of the photoionization cross-section. The features between approximately 1 and approximately 4 eV are predominantly derived from both Se 4p and C 2p states. The features at approximately 6 eV, between approximately 7 and approximately 10 eV, and between approximately 10 and approximately 20 eV are predominantly derived from Se 4p, C 2p, and Se 4s and/or C 2s states, respectively. The F 2p states originating from the counter anion BF4 are located at approximately 8 eV. By comparing the Se 3d core-level photoemission spectra between DMTSA-BF4 and DMTSA, it is suggested that DMTSA-BF4 has a mixed valence state.

Original languageEnglish
Pages (from-to)1013-1018
Number of pages6
JournalJournal of Electron Spectroscopy and Related Phenomena
Publication statusPublished - 2001 Mar
Event8th International Conference on Electronic Spectroscopy and Structure (ICESS-8) - Berkeley, CA, USA
Duration: 2000 Aug 82000 Aug 12


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