共 26 条
D-Penicillamine and bovine serum albumin co-stabilized copper nanoclusters with remarkably enhanced fluorescence intensity and photostability for ultrasensitive detection of Ag+
被引:25
作者:

Li Ruiyi
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机构:
Jiangnan Univ, Sch Chem & Mat Engn, Wuxi 214122, Peoples R China Jiangnan Univ, Sch Chem & Mat Engn, Wuxi 214122, Peoples R China

Wang Huiying
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Jiangnan Univ, Sch Chem & Mat Engn, Wuxi 214122, Peoples R China Jiangnan Univ, Sch Chem & Mat Engn, Wuxi 214122, Peoples R China

Zhou Xiaoyan
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h-index: 0
机构:
Jiangnan Univ, Sch Chem & Mat Engn, Wuxi 214122, Peoples R China Jiangnan Univ, Sch Chem & Mat Engn, Wuxi 214122, Peoples R China

Liao Xiaoqing
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Jiangnan Univ, Sch Chem & Mat Engn, Wuxi 214122, Peoples R China Jiangnan Univ, Sch Chem & Mat Engn, Wuxi 214122, Peoples R China

Sun Xiulan
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机构:
Jiangnan Univ, Sch Food Sci & Technol, Wuxi 214122, Peoples R China Jiangnan Univ, Sch Chem & Mat Engn, Wuxi 214122, Peoples R China

Li Zaijun
论文数: 0 引用数: 0
h-index: 0
机构:
Jiangnan Univ, Sch Chem & Mat Engn, Wuxi 214122, Peoples R China
Minist Educ, Key Lab Food Colloids & Biotechnol, Wuxi 214122, Peoples R China Jiangnan Univ, Sch Chem & Mat Engn, Wuxi 214122, Peoples R China
机构:
[1] Jiangnan Univ, Sch Chem & Mat Engn, Wuxi 214122, Peoples R China
[2] Jiangnan Univ, Sch Food Sci & Technol, Wuxi 214122, Peoples R China
[3] Minist Educ, Key Lab Food Colloids & Biotechnol, Wuxi 214122, Peoples R China
基金:
中国国家自然科学基金;
关键词:
GOLD NANOCLUSTERS;
GREEN SYNTHESIS;
SCATTERING;
SILVER(I);
OXIDE;
IONS;
NANOPARTICLES;
MERCURY(II);
BIOSENSOR;
PROBE;
D O I:
10.1039/c5nj02615f
中图分类号:
O6 [化学];
学科分类号:
0703 ;
摘要:
Copper nanoclusters (CuNCs) have become promising nanomaterials due to their excellent electronic conductivity and biocompatibility. In this study, we reported a facile synthesis of D-penicillamine and bovine serum albumin co-stabilized copper nanoclusters (BSA/DPA-CuNCs) and the use as optical probe for the detection of Ag+. Herein, Cu2+ was reduced into Cu-0 by D-penicillamine, further leading to form DPA-CuNCs. Then, BSA was introduced into DPA-CuNCs to obtain BSA/DPA-CuNCs by their electrostatic attraction. The as-prepared BSA/DPA-CuNCs exhibit remarkably enhanced fluorescence intensity and photostability. The peak fluorescence intensity is more than 2-fold that of DPA-CuNCs. Due to the synergistic effect between DPA and BSA, the nanosensor based on BSA/DPA-CuNCs gives ultrasensitive fluorescence response towards Ag+. Its peak fluorescence intensity linearly decreases with the increase of Ag+ concentration in the range of 1.0 x 10(-8) to 1.0 x 10(-16) M with the detection limit of 4.3 x 10(-17) M (S/N = 3). The method provides the advantage of sensitivity, repeatability and stability. It has been successfully applied in the detection of Ag+ in water samples. The study also opens a new avenue for the fabrication of functional metal nanoclusters that hold great promise in potential applications such as nanosensors, biocatalysts and molecular carriers.
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页码:732 / 739
页数:8
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