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	Study of the fluorescent response for optical ammonia sensing film
	Zhang Li-yan ; Zhang LY(章丽燕) ; Zhao Li ; Zhao L(赵丽) ; Chen Xi ; Chen X(陈曦)
	2006
关键词	ammonia sensing film aminofluorescein(AF） fluorescence sol-gel
英文摘要	The characters of optical sensing films for ammonia were investigated based on a fluorescent indicator aminofluorescein (AF) immobilization. An organically modified silicates (ORMOSILSs) obtained by copolymerizing various proportions of methyltrimethoxysilane (Me-TriMOS) and tetramethoxysilane (TMOS) was applied. Compared with the fluorescent responses of fluorescein and fluorescein carboxylicate, the fluorescent intensity enhancement of AF for ammonia was found to be caused by the reaction of ammonia with the NH2 group on AF. The reaction may cause the reduction of the intermolecular self-quenching of AF, resulting in a fluorescence enhancement of sensing film in NH3 solution. Furthermore, the properties and the ammonia-sensing behavior of the film were investigated. The results presented here emphasized the significance of ormosil as a matrix for dissolved ammonia sensing. The detection limit for ammonia in water was 0.3 mu g(.)mL(-1).
语种	中文
出版者	BEIJING UNIV PRESS
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/9990]
专题	化学化工－已发表论文
推荐引用方式 GB/T 7714	Zhang Li-yan,Zhang LY,Zhao Li,et al. Study of the fluorescent response for optical ammonia sensing film[J],2006.
APA	Zhang Li-yan,章丽燕,Zhao Li,赵丽,Chen Xi,&陈曦.(2006).Study of the fluorescent response for optical ammonia sensing film..
MLA	Zhang Li-yan,et al."Study of the fluorescent response for optical ammonia sensing film".(2006).

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