Luminophore-immobilized mesoporous silica for selective Hg2+ sensing

被引：99

作者：

Lee, Min Hee ^{[3
]}

Lee, Soo Jin ^{[1
,2
]}

Jung, Jong Hwa ^{[1
,2
]}

Lim, Heungbin ^{[3
]}

Kim, Jong Seung ^{[4
]}

机构：

[1] Gyeongsang Natl Univ, Dept Chem, Jinju 660701, South Korea

[2] Gyeongsang Natl Univ, Res Inst Nat Sci, Jinju 660701, South Korea

[3] Dankok Univ, Dept Chem, Seoul 140714, South Korea

[4] Korea Univ, Dept Chem, Seoul 136701, South Korea

来源：

TETRAHEDRON | 2007年 / 63卷 / 48期

关键词：

rhodamine; mercury sensing; mesoporous silica;

D O I：

10.1016/j.tet.2007.08.113

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

Novel mesoporous silica-immobilized rhodamine (MSIR) and silica particle-immobilized rhodamine (SPIR) anchored by a tren (N(CH2CH2NH2)(3)) were synthesized. The binding and adsorption abilities of both MSIR and SPIR for metal cations were investigated with fluorophotometry and ion chromatography, respectively. Both MSIR and SPIR show selectivity for Hg2+ ion over other metal cations because the Hg2+ ion selectively induces a ring opening of the rhodamine fluorophores. The sensitivity of the MSIR for Hg2+ ion is greater than that of the SPIR and the MSIR adsorbs 70% of Hg2+ ion while the SPIR does only 40%. The MSIR can be also easily recovered by treatment of a solution of TBA(+)OH(-). For the application of Hg2+ detection in the environmental field, the MSIR-coated glass plate is also developed and exhibits an excellent function in visual and fluorescence changes with Hg2+ ion. (C) 2007 Elsevier Ltd. All rights reserved.

引用

页码：12087 / 12092

页数：6

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