Anomalous Surfactant-Induced Enhancement of Luminescence Quantum Yield of Cyanine Dye J-Aggregates

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• 作者：Gleb Ya. Guralchuk ; Ivan K. Katrunov ; Roman S. Grynyov ; Alexander V. Sorokin ; Svetlana L. Yefimova ; Igor A. Borovoy ; Yuri V. Malyukin
• 刊名：Journal of Physical Chemistry C
• 出版年：2008
• 出版时间：September 25, 2008
• 年：2008
• 卷：112
• 期：38
• 页码：14762-14768
• 全文大小：198K
• 年卷期：v.112,no.38(September 25, 2008)
• ISSN：1932-7455

文摘

Formation of the “J-aggregate-surfactant” complex for three cyanine dyes (L-21, LC-1 and PIC) in binary solutions containing cationic surfactant CPB at the concentration higher than the critical micelle concentration has been observed. The complex formation causes a significant increase of J-aggregate luminescence quantum yield and a decrease of radiative lifetime. The model of exciton self-trapping suppression in the “J-aggregate-surfactant” complex that causes changes of luminescence parameters has been proposed.