Cu-Based Tris(chloropropyl) Phosphate MOF Nanosheets for Surface Plasmon Resonance-Based Fiber-Optic Biosensing

被引:4
|
作者
Feng, Jingwen [1 ]
Gao, Jinjuan [1 ]
Yang, Wen [2 ]
Li, Yaru [1 ]
Shi, Jian [1 ]
Liu, Cong [1 ]
Jiang, Mingshun [2 ]
Jiang, Shouzhen [1 ,3 ,4 ]
机构
[1] Shandong Normal Univ, Collaborat Innovat Ctr Light Manipulat & Applicat, Sch Phys & Elect, Jinan 250014, Peoples R China
[2] Shandong Univ, Sch Control Sci & Engn, Jinan 250061, Peoples R China
[3] Shandong Key Lab Med Phys & Image Proc, Jinan 250014, Peoples R China
[4] Shandong Prov Engn & Tech Ctr Light Manipulat, Jinan 250014, Peoples R China
基金
中国国家自然科学基金;
关键词
surface plasmon resonance; fiber-optic biosensor; metal-organic frameworks; dopamine detection; METAL-ORGANIC FRAMEWORKS; HIGHLY SENSITIVE DETECTION; GRAPHENE OXIDE; DOPAMINE; SENSOR; LUMINESCENT; POLYMER;
D O I
10.1021/acsanm.3c01466
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Two-dimensional(2D) metal-organic frameworks (MOFs) havepromising applications in surface plasmon resonance (SPR) sensingfor their intriguing exciton migration and visible light-near infraredabsorption properties. In this study, an effective biosensing structurecomprising 2D Cu-TCPP MOF nanosheet-capsulated Au film was developed,such that lower molecular-weight dopamine with small changes of refractiveindex can be identified on the fiber-optic platform. The large areasof ultrathin 2D Cu-TCPP MOF nanosheets were well prepared, the experimentalresults indicated that the sensitivity (48%) and figure of merit (18%)were increased notably compared with the bare Au film. Moreover, thefinite element method was adopted to numerically analyze and verifythe excellent charge-transfer ability of MOF nanosheets and the bidirectionalgain properties between MOF nanosheets and Au films. Furthermore,the sensitivity [1.24 nm/log(M)] and selectivityof the dopamine were significantly enhanced with a low limit of detectionof 1.50 x 10(-13) M and linear response witha wide range of concentrations from 5 x 10(-12) M to 5 x 10(-7) M through ssDNA surface modificationand conformation amplification. As revealed by the above-mentionedresults, the Cu-TCPP/Au/SMF biosensor can serve as a promising nanoplatformfor clinical diagnosis and medical assessment.
引用
收藏
页码:12775 / 12783
页数:9
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