标题:Functionalized polysilsesquioxane film fluorescent sensors for sensitive detection of polychlorinated biphenyls
作者:Chen, Weikai; Qi, Feng; Li, Chunxiao; Cao, Jiaojie; Li, Zhengqiang; Dou, Jintao; Bei, Yiling; Zhan, Jinhua; Zhu, Qingzeng
作者机构:[Chen, Weikai; Li, Chunxiao; Cao, Jiaojie; Li, Zhengqiang; Dou, Jintao; Bei, Yiling; Zhan, Jinhua; Zhu, Qingzeng] Shandong Univ, Sch Chem & Chem Engn, 更多
通讯作者:Qi, F
通讯作者地址:[Qi, F]Shandong Univ, Qilu Hosp, Dept Anesthesiol & Pain Clin, Jinan 250012, Peoples R China.
来源:JOURNAL OF ORGANOMETALLIC CHEMISTRY
出版年:2014
卷:749
页码:296-301
DOI:10.1016/j.jorganchem.2013.10.028
关键词:Polychlorinated biphenyls (PCB); Polysilsesquioxane; Diphenylamine;; Fluorescence quenching; Sensor
摘要:Development of a rapid, highly sensitive and simple technique for screening polychlorinated biphenyls (PCBs) remains a challenge. In the present study, a novel fluorescent film chemosensor for PCBs based on fluorescence quenching was designed and synthesized. The fluorescent chemosensor is a hybrid organic einorganic functionalized polysilsesquioxane film that is prepared from gamma-(N,N-diphenylcarbamino) propyltriethoxysilane by sol-gel polymerization. The prepared fluorescent polysilsesquioxane film with diphenylamine as a fluorescent probe is sensitive to aqueous solutions of PCBs, including 2-chlorobiphenyl (PCB1), 2,2'-Dichlorobiphenyl (PCB4), 2,2',5-trichlorobiphenyl (PCB18), 3,3',4,4'-tetrachlorobiphenyl (PCB77) and 2,2',4,5,5'-pentachlorobiphenyl (PCB101). PCBs efficiently quench the fluorescence of the chemosensor via a photo-induced electron transfer (PET) process. The fluorescence emission intensity of the polysilsesquioxane film sensor decreased steadily with a corresponding increase in PCBs. The detection limit of PCB77 was found to be 8.03 x 10(-7) M. The obtained results show that this fluorescent sensor has good thermal stability, high sensitivity and satisfactory reversibility in PCBs sensing. (C) 2013 Elsevier B. V. All rights reserved.
收录类别:EI;SCOPUS;SCIE
WOS核心被引频次:4
Scopus被引频次:4
资源类型:期刊论文
原文链接:https://www.scopus.com/inward/record.uri?eid=2-s2.0-84886737979&doi=10.1016%2fj.jorganchem.2013.10.028&partnerID=40&md5=0fbad05be19b6accaf7232cb146c00b8
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