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SCI Article

Bioinspired Synthesis of Mesoporous Gold-silica Hybrid Microspheres as Recyclable Colloidal SERS Substrates

	성명	김진웅 ()
	소속	대학원 바이오나노학과
	캠퍼스
	우수선정주	2017년 11월 4째주

Author

Lee, Jun Bae (Dept Bionano Technol); 김진웅 (Dept Bionano Technol) corresponding author; Kim, Jin Woong (Dept Chem & Mol Engn);

Corresponding Author Info

Nam, YS (reprint author), Korea Adv Inst Sci & Technol, Dept Mat Sci & Engn, 291 Daehak Ro, Daejeon 34141, South Korea.; Kim, JW (reprint author), Hanyang Univ, Dept Bionano Technol, 55 Hanyangdaehak Ro, Ansan 15588, Gyeonggi Do, South Korea.; Kim, JW (re

E-mail

kjwoong@hanyang.ac.kr

Document Type

Article

Source

SCIENTIFIC REPORTS Volume:7 Issue: Pages:- Published:2017

Times Cited

External Information

http://dx.doi.org/10.1038/s41598-017-15225-8

Abstract

Noble metal nanostructures have been intensively investigated as active substrates for surface-enhanced Raman spectroscopy (SERS) from visible to near-IR wavelengths. However, metal nanoparticle-based SERS analysis in solutions is very challenging due to uncontrollable and irreproducible colloid aggregation. Here we report the templated synthesis of porous gold-silica hybrid microspheres and their application as reusable colloidal SERS substrates. Mesoporous polymer microspheres are synthesized and used as templates for the synthesis of non-aggregated gold nanoparticles, followed by polydopamine-mediated silicification to fabricate mesoporous gold-silica hybrid microspheres. The mesoporous hybrid particles detect crystal violet in the order of 10(-8) M and provide the structural durability of the immobilized gold nanoparticles, allowing them to be recycled for repeated SERS analyses for analytes in a solution with the similar sensitivity. This work suggests that the mesoporous gold-silica hybrid microspheres are attractive SERS substrates in terms of reusability, sensitivity, and stability.

Web of Science Categories

Multidisciplinary Sciences

Funding

World Class 300 Project, Ministry of Trade, Industry & Energy (MOTIE), Republic of Korea [10046945]; National Research Foundation of Korea (NRF) - Ministry of Science, ICT & Future Planning [NRF-2017M3A7B4042235, NRF-2016R1A2B2016148]; Nano Material Techn

Language

English

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