Visualization of Polymer–Surfactant Interaction by Dual-Emissive Gold Nanocluster Labeling

Jiaojiao Zheng; Jing Zhang; Fengniu Lu; Yi Du; Ding Cao; Shui Hu; Yang Yang; Zhiqin Yuan

doi:10.3390/bios12090686

Biosensors (Aug 2022)

Visualization of Polymer–Surfactant Interaction by Dual-Emissive Gold Nanocluster Labeling

Jiaojiao Zheng,
Jing Zhang,
Fengniu Lu,
Yi Du,
Ding Cao,
Shui Hu,
Yang Yang,
Zhiqin Yuan

Affiliations

Jiaojiao Zheng: State Key Laboratory of Chemical Resource Engineering, College of Chemistry, College of Material Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
Jing Zhang: State Key Laboratory of Chemical Resource Engineering, College of Chemistry, College of Material Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
Fengniu Lu: Department of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, China
Yi Du: Analysis Center, Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, China
Ding Cao: State Key Laboratory of Chemical Resource Engineering, College of Chemistry, College of Material Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
Shui Hu: State Key Laboratory of Chemical Resource Engineering, College of Chemistry, College of Material Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
Yang Yang: State Key Laboratory of NBC Protection for Civilian, Beijing 102205, China
Zhiqin Yuan: State Key Laboratory of Chemical Resource Engineering, College of Chemistry, College of Material Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China

DOI: https://doi.org/10.3390/bios12090686
Journal volume & issue: Vol. 12, no. 9
p. 686

Abstract

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Polymer-surfactant interaction decides the performance of corresponding complexes, making its rapid and intuitionistic visualization important for enhancing the performance of products and/or processing in related fields. In this study, the fluorescence visualization of the interaction between cationic hyperbranched polyethyleneimine and anionic sodium dodecyl sulfonate surfactant was realized by dual-emissive gold nanocluster labeling. The sensing mechanism was due to the interaction-induced polymer conformation change, which regulated the molecular structure and subsequent photoradiation process of the gold nanoclusters. All three inflection points of the interactions between the polymers and the surfactants were obtained by the change in fluorescence emission ratio of the designed dual-emissive gold nanoclusters. Moreover, these inflection points are verified by the hydrodynamic diameter and zeta potential measurements.

Published in Biosensors

ISSN: 2079-6374 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology: Chemical technology: Biotechnology
Website: http://www.mdpi.com/journal/biosensors

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