標題: Reproducible and Bendable SERS Substrates with Tailored Wettability Using Block Copolymers and Anodic Aluminum Oxide Templates
作者: Lin, Yu-Liang
Karapala, Vamsi Krishna
Shen, Ming-Hui
Chen, Yi-Fan
He, Hung-Chieh
Chang, Chia-Jui
Chang, Yu-Ching
Lu, Tien-Chang
Liau, Ian
Chen, Jiun-Tai
交大名義發表
應用化學系
應用化學系分子科學碩博班
光電工程學系
National Chiao Tung University
Department of Applied Chemistry
Institute of Molecular science
Department of Photonics
關鍵字: anodic aluminum oxide;block copolymers;gold nanoparticles;surface-enhanced Raman scattering;wettability
公開日期: 1-一月-1970
摘要: Surface properties are essential for substrates exhibiting high sensitivity in surface-enhanced Raman scattering (SERS) applications. In this work, novel SERS hybrid substrates using polystyrene-block-poly(methyl methacrylate) and anodic aluminum oxide templates is presented. The hybrid substrates not only possess hierarchical porous nanostructures but also exhibit superhydrophilic surface properties with the water contact angle approximate to 0 degrees. Such surfaces play an important role in providing uniform enhanced intensities over large areas (relative standard deviation approximate to 10%); moreover, these substrates are found to be highly sensitive (limit of detection approximate to 10(-12) m for rhodamine 6G (R6G)). The results show that the hybrid SERS substrates can achieve the simultaneous detection of multicomponent mixtures of different target molecules, such as R6G, crystal violet, and methylene blue. Furthermore, the bending experiments show that about 70% of the SERS intensities are maintained after bending from approximate to 30 degrees to 150 degrees.
URI: http://dx.doi.org/10.1002/marc.202000088
http://hdl.handle.net/11536/154415
ISSN: 1022-1336
DOI: 10.1002/marc.202000088
期刊: MACROMOLECULAR RAPID COMMUNICATIONS
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