Aggregation states of rhodamine 6G in electrospun nanofibrous films

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• 作者：Hengguo Wang ; Qingbiao Yang ; Lei Sun ; Shuai Wang ; Wei Wang ; Chaoqun Zhang ; Yanchun Li ; Shufei Xu ; Yaoxian Li
• 关键词：Electrospinning ; Rhodamine 6G ; Aggregation ; J-type dimers
• 刊名：Journal of Colloid and Interface Science
• 出版年：2010
• 出版时间：15 January 2010
• 年：2010
• 卷：341
• 期：2
• 页码：224-231
• 全文大小：2264 K

文摘

Novel fluorescent composite nanofibrous films of rhodamine 6G (Rh6G) and polyacrylonitrile (PAN) are first prepared by electrospinning. The aggregation states of Rh6G in electruspun nanofibrous films are studied as a function of concentrations and characterized by UV–vis absorption spectroscopy and emission and excitation fluorescence spectroscopy. We have also used casting films as reference material to compare the effect of incorporation of Rh6G in electrospun nanofibrous films and casting films. The large specific surface area of the nanofibers and fast evaporation of the solvents in the electrospinning process reduced the aggregation of Rh6G. The appearance of fluorescent J-type dimers, even at higher dye concentration in elctrospun films, demonstrates that the electrospun films are an ideal material for incorporation of fluorescent dyes.