Multiarm Star Block and Multiarm Star Mixed-Block Copolymers via Azide-Alkyne Click Reaction

作者：Durmaz Hakan; Dag Aydan; Erdogan Elif; Demirel A Levent^*; Hizal Gurkan; Tunca Umit

来源：Journal of Polymer Science Part A: Polymer Chemistry , 2010, 48(1): 99-108.

DOI：10.1002/pola.23765

• atomic force microscopy (AFM)
• azide-alkyne click reaction
• dynamic light scattering (DLS)
• GPC
• multiarm star polymer
• triple detection-GPC

The synthesis of multiarm star block (and mixed-block) copolymers are efficiently prepared by using Cu(I) catalyzed azide-alkyne click reaction and the arm-first approach. alpha-Silyl protected alkyne polystyrene (alpha-silyl-alkyne-PS) was prepared by ATRP of styrene (St) and used as macroinitiator in a crosslinking reaction with divinyl benzene to successfully give multiarm star homopolymer with alkyne periphery. Linear azide end-functionalized poly(ethylene glycol) (PEG-N(3)) and poly (tert-butyl acrylate) (PtBA-N(3)) were simply clicked with the multiarm star polymer described earlier to form star block or mixed-block copolymers in N,N-dimethyl formamide at room temperature for 24 h. Obtained multiarm star block and mixed-block copolymers were identified by using (1)H NMR, GPC, triple detection-GPC, atomic force microscopy, and dynamic light scattering measurements.

• 出版日期2010-1-1