Add time:08/11/2019         Source:sciencedirect.com

Poly(4-diphenylaminostyrene) (PDAS)-poly(1-vinylpyrene (cas 17088-21-0)) (PVPY) binary block copolymers were synthesized by well-controlled anionic polymerization of 1-vinylpyrene for the first time. The nucleophilicity and solubility of the initiator system and poly(1-vinylpyrenyl)lithium were very important factors in the polymerization reaction. An initiator system of the poly(4-diphenylaminostyryl)lithium/N,N,N′,N′-tetramethylethylenediamine system in toluene was found to be very effective. The PDAS-PVPY binary block copolymer having a high molecular weight PVPY block acted as a non-covalent cross-linker for single-walled carbon nanotubes (SWNTs) gel due to the aggregation of the polymer chain in addition to the strong π-π interactions between pyrenyl groups and SWNTs, forming a self-assembled polymer/SWNTs nanocomposite.

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