The J-aggregate 5,5',6,6'-tetrachloro-1,1'-diethyl-3,3'-bis(4-sulfobutyl)-benzimidazolocarbocyanine sodium salt in aqueous solution.
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概要
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The aggregation of the title dye in a dilute alkaline aqueous solution is investigated at 283–303 K by measuring the electronic absorption spectra. The association number is estimated to be 8, the heat of formation and the entropy change for the association are found as <I>ΔH</I>=−91.5 kcal mol<SUP>−1</SUP> (1 cal=4.184J) and <I>ΔS</I>=−139.3 cal K<SUP>−1</SUP> mol<SUP>−1</SUP>, respectively. The structure of the octamer is discussed from a view of spectral shift, intermolecular force and the crystalline structural data. The lifetimes, quantum yields and polarization of fluorescence are investigated on the monomeric and the J-aggregate state of the dye. The energy transfer between several J-aggregate units is indicated in the excited state.
- 公益社団法人 日本化学会の論文
著者
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Tanaka Jiro
Department Of Biomaterials Okayama University Graduate School Of Medicine Dentistry And Pharmaceutic
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Kanamaru Nobuaki
Department Of Chemistry Faculty Of Science Nagoya University
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Kanamaru Nobuaki
Department of Chemistry, Faculty of Science, Nagoya University
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Makio Shigetoshi
Department of Chemistry, Faculty of Science, Nagoya University
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