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Morphology-Dependent Luminescence in Complex Liquid Colloids

Author(s)
Lin, Che-Jen; Zeininger, Lukas; Savagatrup, Suchol; Swager, Timothy M
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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Abstract
Complex liquid colloids hold great promise as transducers in sensing applications as a result of their tunable morphology and intrinsic optical properties. Herein, we introduce meta-amino substituted green fluorescence protein chromophore (GFPc) surfactants that localize at the organic-water interface of complex multiphase liquid colloids. The meta-amino GFPc exhibits hydrogen-bonding (HB) mediated fluorescence quenching, and are nearly nonemissive in the presence of protic solvents. We demonstrate morphology-dependent fluorescence of complex liquid colloids and investigate the interplay between GFPc surfactants and other simple surfactants. This environmentally responsive surfactant allows us to observe morphological changes of complex emulsions in randomized orientations. We demonstrate utility with an enzyme activity based fluorescence "turn-ON" scheme. The latter employs an oligopeptide-linked GFPc that functions as both a surfactant and trypsin target. The cleavage of hydrophilic peptide results in a morphology change and ultimately a fluorescence turn-on. Fluorescent complex colloids represent a new approach for biosensing in liquid environments.
Date issued
2019-02
URI
https://hdl.handle.net/1721.1/128145
Department
Massachusetts Institute of Technology. Department of Chemistry; Massachusetts Institute of Technology. Institute for Soldier Nanotechnologies
Journal
Journal of the American Chemical Society
Publisher
American Chemical Society (ACS)
Citation
Lin, Che-Jen et al. "Morphology-Dependent Luminescence in Complex Liquid Colloids." Journal of the American Chemical Society 141, 9 (February 2019): 3802–3806 © 2019 American Chemical Society
Version: Author's final manuscript
ISSN
0002-7863
1520-5126

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