A New Smart Surface-Enhanced Raman Scattering Sensor Based on pH-Responsive Polyacryloyl Hydrazine Capped Ag Nanoparticles.
A New Smart Surface-Enhanced Raman Scattering Sensor Based on pH-Responsive Polyacryloyl Hydrazine Capped Ag Nanoparticles.
复制标题
基于 pH 响应型聚丙烯酰肼封端银纳米颗粒的新型智能表面增强拉曼散射传感器
DOI：
10.1186/s11671-017-2257-8
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发表时间：
2017-08-14
影响因子：
--
通讯作者：
Guang S
中科院分区：
文献类型：
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作者：
Yuan S;Ge F;Zhou M;Cai Z;Guang S
首次在不使用还原剂和封端剂的情况下制备了一种新型 pH 响应型 Ag@聚丙烯酰肼 (Ag@PAH) 纳米粒子作为表面增强拉曼散射 (SERS) 基底。 Ag@PAH纳米粒子在pH = 4到pH = 9的范围内表现出优异的可调谐检测性能。这解释了响应性PAH的膨胀收缩行为可以在外部pH刺激下控制Ag NPs与目标分子之间的距离，从而产生可调谐的LSPR和进一步受控的SERS。此外，Ag@PAH纳米粒子具有超灵敏的检测能力，罗丹明6G的检测限降低至10−12M。这些优点使 Ag@PAH NP 成为痕量分析和传感器领域有前途的智能 SERS 基底。
A novel pH-responsive Ag@polyacryloyl hydrazide (Ag@PAH) nanoparticle for the first time as a surface-enhanced Raman scattering (SERS) substrate was prepared without reducing agent and end-capping reagent. Ag@PAH nanoparticles exhibited an excellent tunable detecting performance in the range from pH = 4 to pH = 9. This is explained that the swelling-shrinking behavior of responsive PAH can control the distance between Ag NPs and the target molecules under external pH stimuli, resulting in the tunable LSPR and further controlled SERS. Furthermore, Ag@PAH nanoparticles possessed an ultra-sensitive detecting ability and the detection limit of Rhodamine 6G reduced to 10−12M. These advantages qualified Ag@PAH NP as a promising smart SERS substrate in the field of trace analysis and sensors.