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题名:
Enhanced Fluorescence in Tetraylnitrilomethylidyne-Hexaphenyl Derivative-Functionalized Periodic Mesoporous Organosilicas for Sensitive Detection of Copper(II)
作者: Gao, M; Han, SH; Hu, YF; Zhang, LL
刊名: JOURNAL OF PHYSICAL CHEMISTRY C
出版日期: 2016
卷号: 120, 期号:17, 页码:9299—9307
关键词: AGGREGATION-INDUCED EMISSION ; ORGANIC GROUPS ; METAL-IONS ; SENSORS ; FRAMEWORKS ; FILMS ; CU2+ ; AIE ; NANOPARTICLES ; CHEMOSENSOR
DOI: 10.1021/acs.jpcc.6b01837
通讯作者: Han, SH (reprint author), Shandong Univ, Minist Educ, Key Lab Colloid & Interface Chem, Jinan 250100, Peoples R China.
文章类型: 期刊文献
英文摘要: Highly fluorescent and copper(II)-responsive periodic mesoporous organosilicas (TH-PMOs) were successfully obtained by using a (tetraylnitrilomethylidyne-hexaphenyl (TH))-derived tetrasiloxane (TH-Si-4) as the organosilica precursor. The TH unit was embedded within the framework of PMOs by four silyl groups without forming associated species, and high fluorescence quantum yields were achieved even for the PMOs prepared from 100% organosilane precursor. The optical studies indicated that the intramolecular rotation of TH was restricted by the framework of TH-PMOs, resulting in the decline of the nonradiative decay process and enhanced monomeric fluorescence emission. The unique structure of the TH groups not only assured their aggregation-induced enhanced emission (AIEE) characteristics but also provided potential coordinating sites for metal ions. Therefore, the enhanced fluorescence of PMOs showed a highly selective response to copper ions in aqueous solution with the detection sensitivity up to the 10(-8) M level. Moreover, the diffusion process of Cu2+ and the competitive effect between Cu2+ and Fe2+ on TH-PMOs were measured by STXM; the results reveal that the specific binding between TH and Cu2+ brings about a relatively high adsorption capacity of the hybrid material toward Cu2+.
收录类别: SCI
语种: 英语
WOS记录号: WOS:000375631100035
ISSN号: 1932-7447
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.sinap.ac.cn/handle/331007/25714
Appears in Collections:中科院上海应用物理研究所2011-2017年_期刊论文

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Recommended Citation:
Gao, M,Han, SH,Hu, YF,et al. Enhanced Fluorescence in Tetraylnitrilomethylidyne-Hexaphenyl Derivative-Functionalized Periodic Mesoporous Organosilicas for Sensitive Detection of Copper(II)[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2016-01-01,120(17):9299—9307.
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文件名: Enhanced Fluorescence in Tetraylnitrilomethylidyne-Hexaphenyl Derivative-Functionalized Periodic Mesoporous Organosilicas for Sensitive Detection of Copper(II).pdf
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