Journal
LANGMUIR
Volume 37, Issue 18, Pages 5548-5553Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.langmuir.1c00303
Keywords
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Funding
- National Key Research and Development Program of China [2020YFA0211300]
- National Natural Science Foundation of China (NSFC) [11974265, 21703160]
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This study presents a method for forming oligomer coatings on nanoparticles via light-induced reactions, with the potential for surface polymerization for various applications. The versatile coating method is applicable to different types of inorganic cores and has the capability to initiate surface polymerization for different functionalities.
Hybrid core-shell nanoparticles play a very significant role in many applications. Here, we report a light-induced oligomer coating on nanoparticles via Norrish type I reaction. The radical species generated via UV irradiation can chemically initiate the photoinitiators, which are then polymerized and deposited on inorganic nanoparticles via heterogeneous nucleation, forming a soft oligomer coating smaller than 40 nm. This coating method is versatile and potentially applicable to many different types of inorganic cores and their assemblies, making it a very useful technique for freezing nanoassemblies in solution. Moreover, these oligomer coatings containing radical species can also initiate surface polymerization of both styrenic and acrylic monomers with certain functionalities for different applications such as self-assembly, plasmon tuning, and pH sensing (3.5-4.5).
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