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从理论上研究了萘醌衍生物和噻唑衍生物分子之间的相互作用 ,并通过光谱实验进行了验证。研究结果表明 :萘醌衍生物和噻唑衍生物均为多环有机共轭分子 ,且分子结构呈平面构型。在固态时呈多晶粉末状 ,有着强烈的光吸收 ,但无可见光发射。可是 ,将其分散于聚乙烯树脂中 ,其呈单分子形态 ,能产生可见光。通过比较萘醌衍生物和噻唑衍生物的荧光光谱和激发光谱 ,发现萘醌衍生物的荧光光谱与噻唑衍生物的激发光谱有很好的重叠。这样 ,将萘醌衍生物和噻唑衍生物均匀混合分散到聚乙烯树脂中 ,用蓝光激发萘醌衍生物就可观察到噻唑衍生物发射的红光。这说明二者之间产生了能量传递 ,实现了蓝光激发下产生的红光。实验还发现 ,采用适当比例的配制可得到能量传递效率最高的混合膜。这对于光转换白光LED的研发工作是非常有意义的。
The interaction between naphthoquinone derivatives and thiazole derivatives has been studied theoretically and verified by spectroscopic experiments. The results show that both naphthoquinone derivatives and thiazole derivatives are polycyclic organic conjugated molecules, and the molecular structure is planar. In solid state was polycrystalline powder, has a strong light absorption, but no visible light emission. However, when dispersed in a polyethylene resin, it is in a single molecular form and is capable of generating visible light. By comparing the fluorescence and excitation spectra of the naphthoquinone and thiazole derivatives, it was found that the fluorescence spectra of the naphthoquinone derivatives and the thiazole derivatives had a good overlap. In this way, the naphthoquinone derivative and the thiazole derivative are uniformly mixed and dispersed in the polyethylene resin, and the red light emitted from the thiazole derivative can be observed by exciting the naphthoquinone derivative with blue light. This shows that there is a transfer of energy between the two to achieve the red light generated by blue light excitation. Experiments also found that, with the appropriate proportion of preparation can be obtained the highest energy transmission efficiency of the mixed membrane. This is very meaningful for the R & D work of the light conversion white LED.