微乳液
纳米颗粒
刚度(电磁)
材料科学
化学工程
化学
纳米技术
复合材料
肺表面活性物质
生物化学
工程类
作者
Rongguan Yin,Jirameth Tarnsangpradit,Akhtar Gul,Jaepil Jeong,Xiaolei Hu,Yuqi Zhao,Hanshu Wu,Qiqi Li,George Fytas,Alamgir Karim,Michael R. Bockstaller,Krzysztof Matyjaszewski
标识
DOI:10.1073/pnas.2406337121
摘要
Unlike inorganic nanoparticles, organic nanoparticles (oNPs) offer the advantage of "interior tailorability," thereby enabling the controlled variation of physicochemical characteristics and functionalities, for example, by incorporation of diverse functional small molecules. In this study, a unique inimer-based microemulsion approach is presented to realize oNPs with enhanced control of chemical and mechanical properties by deliberate variation of the degree of hyperbranching or cross-linking. The use of anionic cosurfactants led to oNPs with superior uniformity. Benefitting from the high initiator concentration from inimer and preserved chain-end functionality during atom transfer radical polymerization (ATRP), the capability of oNPs as a multifunctional macroinitiator for the subsequent surface-initiated ATRP was demonstrated. This facilitated the synthesis of densely tethered poly(methyl methacrylate) brush oNPs. Detailed analysis revealed that exceptionally high grafting densities (~1 nm
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