Modulated Fluorescence in LB Films Based on DADQs-A Potential Sensing Surface?
Modulated Fluorescence in LB Films Based on DADQs-A Potential Sensing Surface?
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基于DADQs的LB膜的调制荧光-一种潜在的敏感表面？
DOI：
10.3390/molecules27123893
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发表时间：
2022-06-17
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影响因子：
--
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以三种不同的双氰基喹二甲烷(DADQ)为原料制备了新型的荧光Langmuir-Blodgett(LB)膜。DADQ的官能团结构不同，影响了LB膜的结构和荧光性能。当DADQs的荧光与非辐射衰减(构象变化)竞争时，LB膜中的堆积和/或自由体积将影响平均荧光寿命和积分强度。然后，将原始(空白)LB膜暴露于选择的非荧光目标分析物(一些与环境相关)中，并相对于原始LB膜测量和分析荧光。将LB膜暴露于选定的目标分析物会导致相对于平均荧光寿命和积分强度的荧光调制。不同的DADQ LB膜对荧光的调制是不同的，这可以归因于目标分析物与DADQ LB膜之间受限的非辐射衰减或电荷转移反应。DADQ LB膜的响应表明，这些体系可以发展成为基于荧光测量的传感表面。
Novel fluorescent Langmuir-Blodgett (LB) films have been constructed from three different amphiphilic dicynaoquinodimethanes (DADQs). The DADQs varied in functional group structure, which had an impact on the LB film structure and the fluorescence properties. As the fluorescence of DADQs competes with non-radiative decay (conformational change), the packing and/or free volume in the LB film will influence the average fluorescence lifetime and integrated intensity. The pristine (blank) LB films were then exposed to a selection of non-fluorescent target analytes (some with environmental relevance) and the fluorescence was measured and analyzed relative to the pristine LB film. Exposure of the LB films to selected target analytes results in a modulation of the fluorescence, both with respect to average fluorescence lifetime and integrated intensity. The modulation of the fluorescence is different for different DADQ LB films and can be attributed to restricted non-radiative decays or charge transfer reactions between target analyte and DADQ LB film. The response from the DADQ LB films shows that these systems can be developed into sensing surfaces based on fluorescence measurements.
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影响因子：
--
作者：
Bloor, D;Kagawa, Y;Rumbles, G
通讯作者：
Rumbles, G
DOI：
10.1039/ft9908601117
发表时间：
1990-04-07
期刊：
JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS
影响因子：
--
作者：
ASHWELL, GJ;DAWNAY, EJC;HASAN, M
通讯作者：
HASAN, M
影响因子：
5.4
作者：
Chae, Inseok;Ngo, Dien;Kim, Seong H.
通讯作者：
Kim, Seong H.
影响因子：
3.9
作者：
Gabaji, M.;Medard, J.;Michel, J. P.
通讯作者：
Michel, J. P.
影响因子：
2.1
作者：
PEARSON, C;MOORE, AJ;PETTY, MC
通讯作者：
PETTY, MC