Facile grafting-onto-preparation of block copolymers of TEMPO and glycidyl methacrylates on an oxide substrate as an electrode-active layer
Facile grafting-onto-preparation of block copolymers of TEMPO and glycidyl methacrylates on an oxide substrate as an electrode-active layer
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DOI：
10.1016/j.polymer.2015.02.043
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发表时间：
2015-06
期刊：
影响因子：
4.6
通讯作者：
Katsuyuki Takahashi;K. Korolev;Kazumasa Tsuji;K. Oyaizu;H. Nishide;E. Bryuzgin;A. Navrotskiy;I. Novakov
中科院分区：
文献类型：
--
作者：
Katsuyuki Takahashi;K. Korolev;Kazumasa Tsuji;K. Oyaizu;H. Nishide;E. Bryuzgin;A. Navrotskiy;I. Novakov
采用原子转移自由基聚合法制备了2,2,6,6-四甲基-4-甲基丙烯酸酯和甲基丙烯酸缩水甘油酯嵌段共聚物。将嵌段共聚物简单地包覆在掺杂铟的氧化锡衬底上，并进行退火。共聚物层被有效地转化为相应的2,2,6,6-四甲基哌啶-1-氧（TEMPO）聚合物层。TEMPO层在普通电解质溶液（如乙腈和碳酸乙烯）中膨胀而不是洗脱，在0.81 V vs. Ag/AgCl下表现出优异的电化学可逆氧化还原循环。该层厚度为微米，具有足够的电荷扩散率（10−10cm2s−1）和非常大的存储容量（超过120 mC cm−2），适用于有机基可充电器件的阴极。
Block copolymers of 2,2,6,6-tetramethyl-4-piperidyl methacrylate and glycidyl methacrylate were prepared by atom transfer radical polymerization. The block copolymer was immobilized on an indium-doped tin oxide substrate by simply coating the copolymer solution and annealing. The copolymer layers were efficiently converted to those of the corresponding 2,2,6,6-tetramethylpiperidin-1-oxy (TEMPO) polymer. The TEMPO layers were swelled with but not eluted into common electrolyte solutions such as acetonitrile and ethylene carbonate, and showed excellent electrochemically reversible redox cycling at 0.81 V vs. Ag/AgCl. The layer with the thickness of micron meters exhibited both a sufficient charge diffusivity (10−10cm2s−1) and a very large storage capacity (beyond 120 mC cm−2), which was applicable to a cathode of organic-based rechargeable devices.