Details

Autor(en) / Beteiligte

• Wang, Yong
• Zhou, Chao
• Wang, Wei
• Xu, Dandan
• Zeng, Fanyu
• Zhan, Chen
• Gu, Jiahui
• Li, Mingyu
• Zhao, Weiwei
• Zhang, Jiaheng
• Guo, Jinhong
• Feng, Huanhuan
• Ma, Xing

Titel

Photocatalytically Powered Matchlike Nanomotor for Light‐Guided Active SERS Sensing

Ist Teil von

• Angewandte Chemie International Edition, 2018-10, Vol.57 (40), p.13110-13113

Auflage

International ed. in English

Ort / Verlag

Germany: Wiley Subscription Services, Inc

Erscheinungsjahr

2018

Quelle

MEDLINE

Beschreibungen/Notizen

• Surface enhanced Raman spectroscopy (SERS) is a powerful optical sensing technique that can detect analytes of extremely low concentrations. However, the presence of enough SERS probes in the detection area and a close contact between analytes and SERS probes are critical for efficient acquisition of a SERS signal. Presented here is a light‐powered micro/nanomotor (MNM) that can serve as an active SERS probe. The matchlike AgNW@SiO2 core–shell structure of the nanomotors work as SERS probes based on the shell‐isolated enhanced Raman mechanism. The AgCl tail serves as photocatalytic nanoengine, providing a self‐propulsion force by light‐induced self‐diffusiophoresis. The phototactic behavior was utilized to achieve enrichment of the nanomotor‐based SERS probes for on‐demand biochemical sensing. The results demonstrate the possibility of using photocatalytic nanomotors as active SERS probes for remote, light‐controlled, and smart biochemical sensing on the micro/nanoscale. Strike a match: A light‐powered matchlike nanomotor is presented and its AgNW@SiO2 core–shell structure serves as a surface enhanced Raman spectroscopy (SERS) probe and the AgCl tail serves as a photocatalytic nanoengine, providing a self‐propulsion force by light‐induced self‐diffusiophoresis. The nanomotor provides an active SERS probe for remote, light‐controlled, and smart biochemical sensing on the micro/nanoscale.