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首页> 外文期刊>Chemistry: A European journal >Synthesis and characterization of luminescent rod-coil block copolymers by atom transfer radical polymerization: utilization of novel end-functionalized terfluorenes as macroinitiators
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Synthesis and characterization of luminescent rod-coil block copolymers by atom transfer radical polymerization: utilization of novel end-functionalized terfluorenes as macroinitiators

机译：原子转移自由基聚合合成发光棒-线圈嵌段共聚物及其表征：利用新型末端官能化三芴作为大分子引发剂

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摘要

Two novel, rigid, photoluminescent, substituted terfluorene derivatives were synthesized by utilizing direct bromination and Suzuki coupling reactions. These oligomers were used as initiators for the atom transfer radical polymerization (ATRP) of styrene and tert-butyl acrylate. Thus, diblock and triblock rod-coil block copolymers were prepared with well-defined structure, as far as their size and shape is concerned. Molecular weights up to approximately 21 000 and polydispersity indices not exceeding 1.5 in most cases were obtained. The copolymers emit blue light in solution, and their luminescence properties remain practically invariable when passing from solution to the solid state. No ground - state aggregation or excimer formation were observed in the solid state, even after annealing at high temperatures.
机译：利用直接溴化和Suzuki偶联反应合成了两种新颖的，刚性的，光致发光的，取代的三芴衍生物。这些低聚物用作苯乙烯和丙烯酸叔丁酯的原子转移自由基聚合（ATRP）的引发剂。因此，就其尺寸和形状而言，制备具有明确结构的二嵌段和三嵌段杆-线圈嵌段共聚物。在大多数情况下，获得的分子量高达约21000，多分散指数不超过1.5。共聚物在溶液中发出蓝光，并且当从溶液转变为固态时，它们的发光性能实际上保持不变。即使在高温下退火，在固态下也未观察到基态聚集或准分子形成。

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