Sensitivity-enhanced plasmonic sensor modified with ZIF-8

被引：1
|
作者：
Xu, Yanpei [1 ]
Song, Yutong [1 ]
Hao, Haixing [1 ]
Zhao, Zhimeng [1 ]
Jin, Yong [1 ]
Wang, Qi [1 ]
机构：
[1] Northeastern Univ, Coll Sci, Shenyang 110819, Peoples R China
来源：
OPTICS AND LASER TECHNOLOGY | 2025年 / 181卷
关键词：
SPR; ZIF-8; Refractive index sensing; Biosensor; LABEL-FREE DETECTION; RESONANCE;
D O I：
10.1016/j.optlastec.2024.111885
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
ZIF-8 is a typical metal-organic framework (MOF) material, which has great potential for sensor improvement. In this paper, we prepared a high sensitivity surface plasmon resonance (SPR) sensor based on ZIF-8/Au and described the preparation process of the sensor and characterized the samples in detail. The results showed that the synthesized ZIF-8 nanoparticles were uniform with an average diameter of about 50 nm. The performance of the sensor was related to the amount of ZIF-8, which could be controlled by adjusting the number of spin-coating cycles. When the refractive index ranged from 1.3335 to 1.3635, the maximum sensitivity of the sensor reached 3961.36nm/RIU with one cycle of spin-coating, which was 74.05% higher than that of pure Au single-layer film sensor. Furthermore, the feasibility of the proposed sensor for biological sensing was demonstrated by detecting bovine serum albumin (BSA).
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页数：7
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