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Title: Plasmonic liquid marbles : a miniature substrate-less SERS platform for quantitative and multiplex ultratrace molecular detection
Authors: Lee, Hiang Kwee
Lee, Yih Hong
Phang, In Yee
Wei, Jiaqi
Miao, Yue-E
Liu, Tianxi
Ling, Xing Yi
Keywords: DRNTU::Science::Chemistry
Issue Date: 2014
Source: Lee, H. K., Lee, Y. H., Phang, I. Y., Wei, J., Miao, Y.-E., Liu, T., et al. (2014). Plasmonic Liquid Marbles: A Miniature Substrate-less SERS Platform for Quantitative and Multiplex Ultratrace Molecular Detection. Angewandte Chemie, 126(20), 5154-5158.
Series/Report no.: Angewandte chemie
Abstract: Inspired by aphids, liquid marbles have been studied extensively and have found application as isolated microreactors, as micropumps, and in sensing. However, current liquid-marble-based sensing methodologies are limited to qualitative colorimetry-based detection. Herein we describe the fabrication of a plasmonic liquid marble as a substrate-less analytical platform which, when coupled with ultrasensitive SERS, enables simultaneous multiplex quantification and the identification of ultratrace analytes across separate phases. Our plasmonic liquid marble demonstrates excellent mechanical stability and is suitable for the quantitative examination of ultratrace analytes, with detection limits as low as 0.3 fmol, which corresponds to an analytical enhancement factor of 5×108. The results of our simultaneous detection scheme based on plasmonic liquid marbles and an aqueous–solid–organic interface quantitatively tally with those found for the individual detection of methylene blue and coumarin.
ISSN: 0044-8249
DOI: 10.1002/ange.201401026
Rights: © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:SPMS Journal Articles

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