摘要
用时间分辨电子自旋共振(TR-ESR)和瞬态吸收光谱技术,研究了菲醌在乙二醇均相及其TX-100含水胶束溶液中的光化学反应机理.化学诱导动态电子极化(CIDEP)谱和瞬态吸收光谱都表明,在乙二醇均相溶液中,菲醌光激发三重态~3PAQ~*夺取氢原子形成中性自由基PAQH~·,三重态机理是CIDEP形成的主要机理.在TX-100含水胶束溶液中,光解主要得到菲醌负离子基PAQ^(·-),PAQ^(·-)由PAQH~·解离形成,解离过程中伴随着极化转移.
The photochemical reaction mechanism of phenanthrenequione in ethylene glycol homogenous and its TX-100 aqueous micellar solution has been studied through time resolved ESR and transient ab- sorptive spectra technique. In EG homogenous solution, CIDEP spectra and transient absorptive spectra indicate that neutral radical （PAQH＂） was formed through hydrogen transfer reaction between excited triplet phenanthrenequinone （3PAQ＊） and EG. Triplet mechanism is the mainly mechanism to generate CIDEP. In TX-100 aqueous micellar solution, the signals of CIDEP of phenanthrenequinone anion radi- cal were observed, which were generated from the dissociation of PAQH＂ accompanying spin polariza- tion transfer.
出处
《原子与分子物理学报》
CAS
CSCD
北大核心
2011年第1期107-111,共5页
Journal of Atomic and Molecular Physics
基金
国家自然科学基金(20903004)
