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Open AccessArticle

Nanocrystal Encapsulation, Release and Application Based on pH-Sensitive Covalent Dynamic Hyperbranched Polymers

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School of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, China
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Henan Province Key Laboratory of New Optoelectronic Functional Materials, Anyang Normal University, Anyang 455000, China
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School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China
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School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
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School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450001, China
*
Authors to whom correspondence should be addressed.
These authors are joint first authors.
Polymers 2019, 11(12), 1926; https://doi.org/10.3390/polym11121926
Received: 13 October 2019 / Revised: 15 November 2019 / Accepted: 19 November 2019 / Published: 22 November 2019
A new strategy for nanocrystal encapsulation, release and application based on pH-sensitive covalent dynamic hyperbranched polymers is described. The covalent dynamic hyperbranched polymers, with multi-arm hydrophobic chains and a hydrophilic hyperbranched poly(amidoamine) (HPAMAM) core connected with pH-sensitive imine bonds (HPAMAM–DA), could encapsulate CdTe quantum dots (QDs) and Au nanoparticles (NPs). Benefiting from its pH response property, CdTe QDs and Au NPs encapsulated by HPAMAM–DA could be released to aqueous phase after imine hydrolysis. The released CdTe/HPAMAM and Au/HPAMAM nanocomposites exhibited excellent biological imaging behavior and high catalytic activities on p-nitrophenol hydrogenation, respectively. View Full-Text
Keywords: nanocrystal encapsulation; release; pH-sensitive covalent dynamic hyperbranched polymer; cell imaging; hydrogenation catalysis nanocrystal encapsulation; release; pH-sensitive covalent dynamic hyperbranched polymer; cell imaging; hydrogenation catalysis
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MDPI and ACS Style

Shi, Y.; Lei, G.; Zhou, L.; Li, Y.; Zhang, X.; Yang, Y.; Peng, H.; Peng, R.; Wang, H.; Cai, X.; Chen, X.; Wang, M.; Wang, G. Nanocrystal Encapsulation, Release and Application Based on pH-Sensitive Covalent Dynamic Hyperbranched Polymers. Polymers 2019, 11, 1926.

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