CAJ | 학술논문

在紫外光照射的条件下,以CpCo(CO)2为催化剂,通过3,5-双-(4-炔苯基)-4-苯基-[1,2,4]三唑和2,5-双-(4-炔苯基)-[1,3,4]噁二唑的双炔分别与1-辛炔的[2+2+2]环三聚反应,合成了一类含芳杂环的可溶于普通有机溶剂的新型超支化聚合物.采用红外光谱、核磁共振谱、热失重分析、紫外吸收光谱、荧光光谱、循环伏安法等方法对聚合物进行结构表征和性能测试.结果表明,聚合物具有优异的热稳定性,尤其是含三唑的聚合物热失重5%的分解温度在450℃以上;在800℃时,残余碳化率高达75%.在光激发的条件下,这类聚合物在二氯甲烷溶液中发射深蓝光,其荧光量子效率可达80%.电化学测试结果表明,这类含芳杂环聚合物具有较好的电子传输能力.
재자외광조사적조건하,이CpCo(CO)2위최화제,통과3,5-쌍-(4-결분기)-4-분기-[1,2,4]삼서화2,5-쌍-(4-결분기)-[1,3,4]오이서적쌍결분별여1-신결적[2+2+2]배삼취반응,합성료일류함방잡배적가용우보통유궤용제적신형초지화취합물.채용홍외광보、핵자공진보、열실중분석、자외흡수광보、형광광보、순배복안법등방법대취합물진행결구표정화성능측시.결과표명,취합물구유우이적열은정성,우기시함삼서적취합물열실중5%적분해온도재450℃이상;재800℃시,잔여탄화솔고체75%.재광격발적조건하,저류취합물재이록갑완용액중발사심람광,기형광양자효솔가체80%.전화학측시결과표명,저류함방잡배취합물구유교호적전자전수능력.
The hyperbranched polymers containing heteroaromatic were synthesized by polycyclotrimerizations of 3,5-bis-(4-ethynyl-phenyl)-4-phenyl-4H-[1,2,4]triazole, and 2,5-bis-(4-ethynyl-phenyl)-[1,3,4]oxadiazole with 1-octyne catalyzed by CpCo(CO)2- hν in toluene. The structures and properties of the polymers were characterized and evaluated by IR, NMR, TGA, UV, photoluminescence, and cyclic voltammetry analyses. The synthesized polymers are completely soluble in common solvents as toluene, THF, chloroform, and dichloromethane. These polymers possess good thermal stability. They graphitize in high yields (up to 75%) when pyrolyzed at 800℃. Upon photoexcitation, the polymers emit a strong deep blue light of~400 nm with high quantum yields (up to 80%). The LUMO values of the polymers are close to that of aromatic poly(1,3,4-oxadiazoles), revealing that these polymers exhibit good electron transport property, being a good candidate of electron transport materials in organic light-emitting diodes.