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Manipulating the Crystallization of Methanofullerene Thin Films with Polymer Additives
Author(s) -
Zheng Lidong,
Liu Jiangang,
Sun Yue,
Ding Yan,
Han Yanchun
Publication year - 2012
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.201200341
Subject(s) - crystallinity , crystallization , nucleation , polymer , polymer chemistry , polystyrene , materials science , methyl methacrylate , chemical engineering , crystallization of polymers , spherulite (polymer physics) , thin film , methacrylate , diffusion , chemistry , organic chemistry , copolymer , nanotechnology , composite material , physics , engineering , thermodynamics
Trace amount (1% to 5%) of polymers [polystyrene (PS), poly(methyl methacrylate) (PMMA), and poly(3‐hexylthiophene) (P3HT)] are utilized as additives to manipulate the cold crystallization of [6,6]‐phenyl‐C 61 butyric acid methyl ester (PCBM) thin films. Highly crystalline PCBM films made up of well‐connected domains and isolated spherulites with tunable size are produced by adjusting the type, molecular weight, and amount of polymer additives. In the nucleation stage, the polymer additives are demonstrated to have a depressing effect on PCBM nucleation. In the growth stage, we suggest that the PCBM growth rate is determined by PCBM molecular diffusion, which is demonstrated to have close correlations with the molecular mobility and crystallinity of the polymer.