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Surface Engineering of Liquid Metal Nanodroplets by Attachable Diblock Copolymers.
ACS Nano. 2020 Jul 10 [Online ahead of print]AN

Abstract

Liquid metal (LM) micro/nano droplets have promising applications in various fields such as flexible electronics, catalysis, and soft composites as well as biomedicines. However, the preparation of highly stable LM nanodroplets suspension based on eutectic gallium/indium (EGaIn) alloys is still challenging. Herein, we report a general and robust strategy to fabricate EGaIn nanodroplets stabilized by polymer brushes (polymer brushes/EGaIn nanodroplets) via in situ attachment of well-defined diblock copolymers with short poly(acrylic acid) (PAA) anchoring segments. Under ultrasonication, the anchoring PAA block is in situ attached onto the gallium oxide "skin" layer of EGaIn nanodroplets to form polymer brushes. The attachable diblock copolymer surfactants allow for highly efficient formation of EGaIn nanodroplets in high yield and with narrow size distribution. The polymer brushes/EGaIn nanodroplets contain very low fractions of attached polymer (<1 wt %) and exhibit high colloidal stability (>30 days) and good redispersibility. Precise control of polymer architecture by atom-transfer radical polymerization was employed to prepare various block copolymers for suspensions in a variety of solvents.

Authors+Show Affiliations

Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China. Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States.Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States.Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States.Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States.Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States.Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States.Department of Mechanical Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States.Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

32649179

Citation

Wei, Qiangbing, et al. "Surface Engineering of Liquid Metal Nanodroplets By Attachable Diblock Copolymers." ACS Nano, 2020.
Wei Q, Sun M, Wang Z, et al. Surface Engineering of Liquid Metal Nanodroplets by Attachable Diblock Copolymers. ACS Nano. 2020.
Wei, Q., Sun, M., Wang, Z., Yan, J., Yuan, R., Liu, T., Majidi, C., & Matyjaszewski, K. (2020). Surface Engineering of Liquid Metal Nanodroplets by Attachable Diblock Copolymers. ACS Nano. https://doi.org/10.1021/acsnano.0c02720
Wei Q, et al. Surface Engineering of Liquid Metal Nanodroplets By Attachable Diblock Copolymers. ACS Nano. 2020 Jul 10; PubMed PMID: 32649179.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Surface Engineering of Liquid Metal Nanodroplets by Attachable Diblock Copolymers. AU - Wei,Qiangbing, AU - Sun,Mingkang, AU - Wang,Zongyu, AU - Yan,Jiajun, AU - Yuan,Rui, AU - Liu,Tong, AU - Majidi,Carmel, AU - Matyjaszewski,Krzysztof, Y1 - 2020/07/10/ PY - 2020/7/11/entrez PY - 2020/7/11/pubmed PY - 2020/7/11/medline KW - block copolymers KW - eutectic gallium/indium KW - liquid metal KW - nanodroplets KW - polymer brushes JF - ACS nano JO - ACS Nano N2 - Liquid metal (LM) micro/nano droplets have promising applications in various fields such as flexible electronics, catalysis, and soft composites as well as biomedicines. However, the preparation of highly stable LM nanodroplets suspension based on eutectic gallium/indium (EGaIn) alloys is still challenging. Herein, we report a general and robust strategy to fabricate EGaIn nanodroplets stabilized by polymer brushes (polymer brushes/EGaIn nanodroplets) via in situ attachment of well-defined diblock copolymers with short poly(acrylic acid) (PAA) anchoring segments. Under ultrasonication, the anchoring PAA block is in situ attached onto the gallium oxide "skin" layer of EGaIn nanodroplets to form polymer brushes. The attachable diblock copolymer surfactants allow for highly efficient formation of EGaIn nanodroplets in high yield and with narrow size distribution. The polymer brushes/EGaIn nanodroplets contain very low fractions of attached polymer (<1 wt %) and exhibit high colloidal stability (>30 days) and good redispersibility. Precise control of polymer architecture by atom-transfer radical polymerization was employed to prepare various block copolymers for suspensions in a variety of solvents. SN - 1936-086X UR - https://www.unboundmedicine.com/medline/citation/32649179/Surface_Engineering_of_Liquid_Metal_Nanodroplets_by_Attachable_Diblock_Copolymers L2 - https://doi.org/10.1021/acsnano.0c02720 DB - PRIME DP - Unbound Medicine ER -
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