X-ray photoelectron spectroscopic study of tetrathiafulvalene-tetracyanoquinodimethane (TTF TCNQ) and related high conductive organic complexes.
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概要
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Tetrathiafulvalene–tetracyanoquinodimethane (TTF·TCNQ) and related high conductive organic complexes were studied by X-ray photoelectron spectroscopy (XPS). The N 1s peak shape of TTF·TCNQ evaporated film was found to change by X-ray irradiation; the high-binding energy shoulder of the N 1s peak increased its intensity with X-ray irradiation time and finally showed a new peak separated by about 1.5 eV from the main peak. TTF·TCNQ was found to be 1:1 both in the surface and in the bulk. The amounts of charge transfer in TTF·TCNQ and other TTF complexes as well as those in 5,6:11,12-bis(dithio)naphthacene(tetrathiotetracene, TTT) complexes were determined from the analysis of the S 2p peak shape. The amount of charge transfer is 0.56±0.05 in TTF·TCNQ and 0.55±0.05 in TTF·TNAP (tetracyanonaphthoquinodimethane). The molecular ratio of (donor)<SUP>+</SUP> in donor molecules is 0.71±0.05 in TTF·Br<SUB>0.7</SUB>, 0.52±0.05 in TTF·I<SUB>0.7</SUB>, 0.65±0.05 in (TTF)<SUB>3</SUB>(BF<SUB>4</SUB>)<SUB>2</SUB>, 0.49±0.05 in (TTT)<SUB>2</SUB>I<SUB>3</SUB>, and 0.93±0.05 in (TTT)(TCNQ)<SUB>2</SUB>, which correspond respectively to 100, 73, 100, 100, and 100% charge transfer between donors and acceptors. The N 1s peak shape of TTF·TCNQ is also discussed.
- 公益社団法人 日本化学会の論文
著者
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Sugano Tadashi
Research Centre for Spectrochemistry and Department of Chemistry, Faculty of Science, The University of Tokyo
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Ikemoto Isao
Research Center for Spectrochemistry and Department of Chemistry, Faculty of Science, The University of Tokyo
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Yamada Masamichi
Research Center for Spectrochemistry and Department of Chemistry, Faculty of Science, The University of Tokyo
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Yamada Masamichi
Research Centre for Spectrochemistry and Department of Chemistry, Faculty of Science, The University of Tokyo
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Kuroda Haruo
Research Center for Spectrochemistry and Department of Chemistry, Faculty of Science, The University of Tokyo
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Kuroda Haruo
Research Centre for Spectrochemistry and Department of Chemistry, Faculty of Science, The University of Tokyo
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