Photophysical property and photostability of J-aggregate thin films of thiacyanine dyes prepared by the spin-coating method
Photophysical property and photostability of J-aggregate thin films of thiacyanine dyes prepared by the spin-coating method
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DOI：
10.1021/jp077088o
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发表时间：
2008-01-24
影响因子：
3.3
通讯作者：
Hiratsuka, Hiroshi
中科院分区：
文献类型：
--
作者：
Tani, Katsuhiko;Ito, Chizuru;Hiratsuka, Hiroshi
利用染料分子和聚（二烯丙基二甲基氯化铵）（PDDA）的静电相互作用，旋涂技术已成功应用于在聚碳酸酯或石英板上制备稳定的硫代碳花青染料J聚集体薄膜。 J-聚集体薄膜是通过将PDDA水溶液旋涂在通过旋涂染料的2,2,3,3-四氟-1-丙醇溶液制备的染料薄膜上而制备的。通过测量荧光来研究染料薄膜和J-聚集体薄膜的光物理性质。光谱、量子产率和寿命。通过吸收带宽（半峰全宽）或辐射寿命估计 J 聚集体的相干尺寸为 3-12。还研究了 J-聚集体薄膜在氩气和氧气下的光降解效率与染料薄膜的光稳定性，发现 J-聚集体薄膜比相应的染料薄膜更稳定。
By use of electrostatic interactions of dye molecules and poly(diallyldimethylammonium chloride) (PDDA), the spin-coating technique has been successfully applied to the preparation of stable J-aggregate thin films of thiacarbocyanine dyes on a polycarbonate or quartz plate. The J-aggregate thin films were prepared by the spin-coating of PDDA aqueous solution on dye thin films prepared on a substrate by the spin-coating of 2,2,3,3-tetrafluoro-1-propanol solution of dyes. Photophysical properties of the dye thin films and J-aggregate thin films were studied by measuring the fluorescence. spectra, quantum yields, and lifetimes. Coherent size of the J-aggregates was estimated to be 3-12 by means of the absorption bandwidth (full width at half maximum) or radiative lifetime. Photostability of the J-aggregate thin films was also studied in terms of photodegradation efficiency under argon and oxygen in comparison with the dye thin films, and J-aggregate thin films were found to be more stable than the corresponding dye thin films.