激光光解研究焦脱镁叶绿酸-a作为光活化农药的可能性  

LASER FLASH PHOTOLYSIS OF PYROPHAEOPHORBIDE-AAND ITS POSSIBLE APPLICATION AS A PHOTOACTIVATED PESTICIDE

作　　者：吴铁一[1] 苗金玲[1] 赵红卫[1] 窦大营[1] 王文锋[1] 姚思德[1] 陈志龙[2] 

机构地区：[1]中国科学院上海原子核研究所辐射技术应用研究中心,上海201800 [2]中国人民解放军第二军医大学海军医学系,上海200433

出　　处：《辐射研究与辐射工艺学报》2003年第3期179-183,共5页Journal of Radiation Research and Radiation Processing

基　　金：国家自然科学基金(30070862)资助

摘　　要：利用激光光解时间分辨吸收方法,对蚕砂叶绿素中提取的焦脱镁叶绿酸-a的光化学性质进行了初步的研究。发现,该化合物在实验检测的波长范围内都有较强的吸收,且能产生较高量子产额的三重激发态。进而讨论它作为光活化农药的可能性。By use of time-resolved laser flash photolysis techniques, a preliminary study of the photochemical characters of pyrophaeophorbide-a derived from chlorophyll in silkworm excrement has been completed. It is found that these compounds have strong absorbance in all wavelength ranges under investigation, and produce excited triplet state with high quantum yields. Discussions were made on possible applications of the pyrophaeophorbide-a as photoactivated pesticide.

关 键 词：激光光解 焦脱镁叶绿酸-a 光活化农药 时间分辨吸收法 叶绿素 光谱分析 摩尔吸光系数 三重激发态 自猝灭速率常数 量子产额 

分 类 号：TQ450.7[化学工程—农药化工] O644.18[理学—物理化学]