共 26 条
Boronic acid modified fiber optic SPR sensor and its application in saccharide detection
被引:32
作者:
Qian, Siyu
[1
]
Liang, Yuzhang
[1
]
Ma, Jie
[2
]
Zhang, Yang
[1
]
Zhao, Jianzhang
[2
]
Peng, Wei
[1
]
机构:
[1] Dalian Univ Technol, Coll Phys & Optoelect Engn, Dalian 116024, Peoples R China
[2] Dalian Univ Technol, State Key Lab Fine Chem, Dalian 116024, Peoples R China
关键词:
Surface plasmon resonance;
Fiber-optic sensor;
Boronic acid;
Saccharide;
ARYLBORONIC ACIDS;
SUGAR ACIDS;
GLUCOSE;
GLYCOPROTEIN;
BINDING;
ESTER;
D O I:
10.1016/j.snb.2015.06.107
中图分类号:
O65 [分析化学];
学科分类号:
070302 ;
081704 ;
摘要:
To extend the application of fiber-optic surface plasmon resonance (SPR) sensing technology, the chemical molecular, 2-(((6-aminohexyl)(benzyl)amino)methyl) phenyl boronic acid (ABA-PBA), is prepared as the recognition monolayer and immobilized on the fiber-optic SPR probe. The boronic acid moiety in ABA-PBA monolayer can covalently bond with 1, 2- or 1, 3- diols moiety of sugar. A monolayer of ABA-PBA is assembled on the SPR sensing region and confirmed by surface enhanced Raman scattering (SERS) technique. Spectrophotometric method is used to determine the pKa of ABA-PBA. The interaction between ABA-PBA monolayer and saccharide can induce the shift of resonance wavelength. By using the miniature fiber-optic SPR sensor, saccharide concentration can be monitored in real time. It shows good selectivity to fructose at low concentrations (10-50 mM). (C) 2015 Elsevier B.V. All rights reserved.
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页码:1217 / 1223
页数:7
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