Efficient Fabrication of Polymer Nanoparticles via Sonogashira Cross-Linking of Linear Polymers in Dilute Solution

作者：Prasher, Alka; Loynd, Conor M.; Tuten, Bryan T.; Frank, Peter G.; Chao, Danming; Berda, Erik B.^*

来源：Journal of Polymer Science Part A: Polymer Chemistry , 2016, 54(1): 209-217.

DOI：10.1002/pola.27942

• nanoparticles
• sonogashira coupling
• size exclusion chromatography
• transmission electron microscopy

The synthesis of single-chain nanoparticles by palladium-catalyzed Sonogashira coupling between a terminal alkyne and a di-halo aryl cross-linker is reported. Statistical copolymers with trimethylsilyl protected alkyne groups pendent to the linear methacrylate back bones were synthesized using reversible addition-fragmentation chain transfer polymerization post polymerization de-protection providing terminal alkyne functionalized linear polymer chains. These linear polymer chains were intramolecularly cross-linked via bifunctional cross-linkers. The resulting well-defined covalently bonded nanoparticles were characterized via triple-detection size exclusion chromatography where MALS detector provided molecular weight information and viscometric detection characterizes particle size and conformations. The particle size could be readily tuned through polymer molecular weight and by degree of cross-linking.

• 出版日期2016-1-1
• 单位吉林大学