论文部分内容阅读
有机功能分子在开发新型光电子材料和光动力疗法(PDT)光敏剂方面是一个重要的研究热点;竹红菌甲素(HA)分子属于激发态质子转移(ESIPT)型分子,具有丰富的激发态特性,且反应速度快,在新型激光染料和新型光电器件方面有一定的应用前景。观察了竹红菌甲素分子的激射现象,其发射激光的范围在620~800 nm;并利用激射效应的特点为强激光条件下的质子转移提供了进一步的依据。利用瞬态光栅技术研究了竹红菌甲素的电子激发态特性,把其瞬态光栅的超快过程归结为竹红菌甲素质子转移形成的过渡态TS*的衰减,并得出过渡态TS*瞬态光栅的寿命为10.5 ps。
Organic functional molecules are an important research hotspot in the development of new optoelectronic materials and photodynamic therapy (PDT) photosensitizers. The hypocrellin A (HA) molecule belongs to the excited state proton transfer (ESIPT) molecule and has abundant excited state properties , And the reaction speed, a new type of laser dyes and new optoelectronic devices have some prospects. The lasing phenomenon of Hypocrellin A molecule was observed, the emission laser ranged from 620 nm to 800 nm, and further evidence was provided for the proton transfer under strong laser condition by using the lasing effect. Using the transient grating technique, the electronic excited state of hypocrellin A was studied, and the ultrafast process of transient gratings was attributed to the decay of the transition state TS * formed by hypocrellin proton transfer, and the transition state The TS * transient grating has a lifetime of 10.5 ps.