Light-emitting physical mechanism of broadband modulated dye HA in new laser light sources
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摘要: 为了研究和揭示竹红菌甲素(HA)的宽带调谐发光物理机制,采用强激光激发的方法,主要研究了HA的强激发辐射效应,从一个侧面证实了激发态质子转移(ESIPT)的存在,同时进行了理论分析和实验验证,并给出了HA分子能级模型。结果表明,对于HA分子需要双光子吸收才能实现ESIPT过程。这一结果对进一步认识HA的发光物理机制是有帮助的。Abstract: In order to reveal the physical mechanism of broadband modulated hypocrellin A(HA), the effect of high power laser excitation was studied. The existence of excited-state intramolecular proton transfer(ESIPT)in HA molecules was proved in theory and experiments. The energy level model of HA molecules was presented. The results show that ESIPT process in HA molecules can be achieved only under the condition of two-photon absorption. This result is helpful for a better understanding of the photophysical mechanism of HA.
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