Lysozyme-stabilized gold nanoclusters as a novel fluorescence probe for cyanide recognition
Lysozyme-stabilized gold nanoclusters as a novel fluorescence probe for cyanide recognition
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溶菌酶稳定的金纳米簇作为氰化物识别的新型荧光探针
DOI：
10.1016/j.saa.2013.10.009
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发表时间：
2014-03-05
影响因子：
4.4
通讯作者：
Dong, Chuan
中科院分区：
文献类型：
--
作者：
Lu, Dongtao;Liu, Lili;Dong, Chuan
溶菌酶稳定的金纳米团簇（Lys-AuNCs）被合成并用作选择性检测氰化物（CN-）的荧光探针。Lys-AuNC具有4 nm的平均尺寸，并且在650 nm（λ（ex）= 370 nm）处显示红色发射。CN-能使Lys-AuNCs的荧光猝灭。对CN-在水溶液中的检测具有良好的灵敏度和选择性。在5.00 × 10 ~（-6）M ~ 1.20 × 10 ~（-4）M范围内，荧光强度与CN ~-浓度呈线性关系，检出限低至1.9 × 10 ~（-7）M。此外，添加CN-到Lys-AuNCs可以诱导从浅黄色到无色的明显颜色变化。相应地，明亮的红色荧光消失，蓝色荧光出现。结果表明，Lys-AuNCs可用于环境中氰化物的检测。(C)2014由Elsevier B. V.出版
Lysozyme-stabilized gold nanoclusters (Lys-AuNCs) have been synthesized and utilized as a fluorescent probe for selective detection of cyanide (CN-). Lys-AuNCs had an average size of 4 nm and showed a red emission at 650 nm (lambda(ex) = 370 nm). The fluorescence of Lys-AuNCs could be quenched by CN-. An excellent sensitivity and selectivity toward the detection of CN- in aqueous solution was observed. The fluorescence intensity was linear with the CN- concentration in the range of 5.00 x 10(-6) M-1.20 x 10(-4) M with a detection limit as low as 1.9 x 10(-7) M. Also, the addition of CN- to Lys-AuNCs could induce an obvious color change from light yellow to colorless. Correspondingly, a bright red fluorescence disappeared and a blue fluorescence appeared. The results indicated that Lys-AuNCs could be applied in detection of cyanide on environmental aspects. (C) 2014 Published by Elsevier B.V.