文献类型：期刊文献

英文题名：Size Controlled Synthesis of Soluble Conjugated Polymeric Nanoparticles in Dendritic Mesoporous Silica Nanospheres

作者：Wang, Jie[1]; Li, Jinjie[1]; ul ain Hira, Noor[1]; Yu, Xiaowang[1]; Zhang, Xuezheng[1]; Ding, Yun[1]; Hu, Aiguo[1]

机构：[1] Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China

年份：2022

外文期刊名：SSRN

收录：EI(收录号：20220064337)

语种：英文

外文关键词：Dendrimers - Fluorescence - Mesoporous materials - Monomers - Nanoparticles - Nanospheres - Palladium - Particle size - Particle size analysis - Polycondensation - Polymer films - Synthesis (chemical)

摘要：A size-controlled method has been exploited to synthesize 20 kinds of soluble conjugated polymeric nanoparticles (SCPNs) through cross-coupling polymerizations between various combinations of symmetrical multifunctional monomers (Ax+By, x>2, y≥2). Unlike the classical polycondensation of these kinds of monomers where infinite polymer networks and insoluble polymeric products are typically formed, this confined polymerization in palladium nanoparticles loaded dendritic mesoporous silica nanospheres produced SCPNs with narrow particle size distribution and high solubility in common organic solvents. The controlled size of SCPNs results from the spatial confinement showing that the polymerization only occurs inside of the mesopores. By simply adjusting the monomer structure and selecting an appropriate cross-coupling polymerization method among Suzuki, Stille, Sonogashira and direct arylation polymerizations, the SCPNs were synthesized in high yields and showed bright fluorescence emission varying from blue to red. The SCPNs with long alkyl chain substituents in monomer units showed good processability and smooth polymer films were formed by simple spin-casting method. The repeatable and straightforward synthesis of SCPNs endow them with wide application prospects in light-emitting, fluorescence sensing and bio-imaging. ? 2022, The Authors. All rights reserved.