Mono- and Multicolor FL Image Patterning Based on Highly Luminous Diphenylacetylene Polymer Derivative by Facile Photobleaching
Mono- and Multicolor FL Image Patterning Based on Highly Luminous Diphenylacetylene Polymer Derivative by Facile Photobleaching
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DOI：
10.1021/ma051630u
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发表时间：
2006
期刊：
影响因子：
5.5
通讯作者：
G. Kwak;M. Fujiki;T. Sakaguchi;T. Masuda
中科院分区：
文献类型：
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作者：
G. Kwak;M. Fujiki;T. Sakaguchi;T. Masuda
研究了聚[1-（三甲基硅基）苯基-2-苯乙炔]（PTMSDPA）薄膜的荧光猝灭行为，并将其应用于单色光和单色光荧光成像。当该膜在室温下在空气中暴露于功率为18.6 mW/cm 2的365 nm UV光时，在530 nm处具有最大值的荧光带迅速减少，然后使用光掩模容易地获得精细分辨的荧光图像。在30 min的延长照射时间后，PTMSDPA膜由于羰基而在1650 cm-1处表现出IR吸收峰。在此基础上，我们推测荧光猝灭反应是由于在紫外光照射下最初形成的少量双自由基。PTMSDPA膜的荧光在小于1.15mW/cm 2的辐照度下即使持续数十分钟也几乎不猝灭，而高光敏性染料（例如尼罗红）的荧光由于激发态的高极性而容易猝灭。作为R…
The fluorescence quenching behavior of thin films of poly[1-(trimethylsilyl)phenyl-2-phenylacetylene] (PTMSDPA) was investigated for the purpose of application of this polymer to mono- and multicolor FL imaging. When the film was exposed to 365-nm UV light with a power of 18.6 mW/cm2 in air at room temperature, the fluorescence band with a maximum at 530 nm rapidly decreased, and then finely resolved fluorescent images were easily obtained using photomasks. After a prolonged irradiation time of 30 min, the PTMSDPA film exhibited an IR absorption peak at 1650 cm-1 due to the carbonyl group. On this basis, we presumed that the fluorescence quenching reaction was due to a small amount of diradical formed initially upon UV irradiation. The fluorescence of the PTMSDPA film was little quenched under an irradiance less than 1.15 mW/cm2 even for tens of minutes, whereas the fluorescence of a highly photosensitive dye, such as Nile red, was readily quenched because of the high polarity in the excited state. As a r...