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吡唑啉酮/9,10-二苯基蒽复合材料的制备及其荧光开关性能研究
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摘要
固态有机光致变色荧光开关材料因具有荧光对比度大、选择性好、灵敏性高等优点,在信息存储、生物成像、化学传感等领域具有潜在的应用价值[1-2]。但多数光致变色材料变色前后荧光对比度不高而且荧光强度较弱,限制了该类材料在实际器件中的应用。本课题组合成了系列在固态下具有良好光致变色性能的吡唑啉酮类光致变色化合物,针对其荧光开关性能不佳这一缺陷,我们采用良溶剂不良溶剂共生长法制备出吡唑啉酮/9,10-二苯基蒽(DPA)复合材料。通过吡唑啉酮化合物光致变色反应调控荧光染料DPA的发射强度。结果表明,吡唑啉酮变色后与荧光染料之间存在的有效能量传递使荧光染料荧光强度明显降低,实现了高的荧光开关对比度。
Solid-stateOrganic photochromic fluorescent switch materials have potential applications in information storage, bio-imaging and chemical sensors, due to dramatically fluorescent contrast, good selectivity, high sensitivity [1-2]. However, most photochromic materials have drawbacks, such as lower fluorescence contrast and weak emission intensity before and after irradiation, which limit their practical applications. Series pyrazolone derivatives, which show excellent photochromic properties in solid state, were synthesized in our group. Pyrazolone?9,10-diphenylanthracene(DPA) composites were prepared by co-growing method from a mixed of good and poor solvents. Emission intensity of DPA was efficiently modulated via photochromic reactions in the composites. The results indicate that the fluorescence intensity of DPA decreased obviously originated from energy transfer between Keto-form of Pyrazolone and DPA.
引文
[1]Fukaminato,T.J.Photoch.Photobio.C.2011,12,177.
    [2]Raymo,F.;MTomasulo,M.Chem.Soc.Rev.2005,34,327.

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