卟啉/氧化石墨烯复合物与抗坏血酸之间相互作用的光电响应研究  

Study on Photoelectric Responses between the Interaction of Porphyrin/Graphene Oxide Nanohybrid and Ascorbic Acid

作　　者：陈静霞[1] 蔡雪梅[2] 王英特[1] 张勇[1] 

机构地区：[1]山西大学化学化工学院,山西太原030006 [2]晋中学院化学化工学院,山西晋中030600

出　　处：《山西大学学报（自然科学版）》2015年第3期511-515,共5页Journal of Shanxi University(Natural Science Edition)

基　　金：山西省高等学校科技项目(20091036)

摘　　要：采用紫外可见吸收光谱法、荧光光谱法和光电化学法研究了卟啉/氧化石墨烯复合物与抗坏血酸之间的相互作用。研究发现:抗坏血酸存在下,卟啉/氧化石墨烯体系的吸光特性和强度均发生变化,同时加速激发态光电子从卟啉转移到氧化石墨烯的失活过程。光电化学测试进一步表明抗坏血酸参与了卟啉/氧化石墨烯体系的电子转移过程,增大了体系的光电流和光电压。提出了抗坏血酸参与卟啉/氧化石墨烯复合物体系光电子转移可能的模型。The interaction between porphyrin/graphene oxide nanohybrid and ascorbic acid was investigated by using uv-vis absorption spectroscopy,fluorescence spectroscopy and photoelectrochemistry measurement methods,respectively.The results showed that the light-absorption characteristic and intensity of porphyrin/graphene oxide system have changed in the presence of ascorbic acid,and the deactivation process of the excited photoelectron transferred from porphyrin to graphene oxide was accelerated.Photoelectrochemical measurements indicated that ascorbic acid involved in the photoinduced electron transfer process of porphyrin/graphene oxide system,and played a role in electron transfer.We put forward the possible model of ascorbic acid involved in photoelectron transfer in porphyrin/graphene oxide nanohybrid system.

关 键 词：卟啉/氧化石墨烯复合物 抗坏血酸 光电响应 

分 类 号：O657[理学—分析化学]