CAJ | 학술논문

毛发状粒子表面的聚合物链是一个具有一定流动性的动态体系，其负载的催化剂综合了均相和非均相负载催化剂的优点，为手性催化剂的负载和实用化提供了一条新的途径。本文利用SiO2纳米粒子表面修饰制得的功能基，通过表面RAFT聚合，并经过氨基去保护后制得负载脯氨酸的毛发状纳米粒子。通过热重、红外和透射电镜对毛发状二氧化硅纳米粒子的结构进行表征，并将获得的毛发状纳米粒子作为催化剂直接催化不对称Aldol反应。
모발상입자표면적취합물련시일개구유일정류동성적동태체계，기부재적최화제종합료균상화비균상부재최화제적우점，위수성최화제적부재화실용화제공료일조신적도경。본문이용SiO2납미입자표면수식제득적공능기，통과표면RAFT취합，병경과안기거보호후제득부재포안산적모발상납미입자。통과열중、홍외화투사전경대모발상이양화규납미입자적결구진행표정，병장획득적모발상납미입자작위최화제직접최화불대칭Aldol반응。
The polymer brushes on the surface of hairy nanoparticles are a dynamic system possessing a certain degree of mobility, so hairy particles supported catalysts can combine the advantages of both homogeneous catalysts and heterogeneous catalysts,and provide a new and practical way for chiral catalyst load. Based on above,the hairy nanoparticles supported proline were synthesized by surface-initiated RAFT polymerization from silica initiator particles. The structure and composition of the hairy nanoparticles ob-tained were characterized by Fourier transform infrared spectrum(FTIR),thermogravimetric analyzer(TGA)and transmission elec-tron microscope(TEM). Futhermore,the achieved hairy nanoparticles were used in asymmetric direct Aldol reaction as catalysts.