Synthetic, structural, photophysical and computational studies of π-conjugated bis- and tris-1,3,2-benzodiazaboroles and related bis(boryl) dithiophenes
作者:Lothar Weber、Vanessa Werner、Mark A. Fox、Todd B. Marder、Stefanie Schwedler、Andreas Brockhinke、Hans-Georg Stammler、Beate Neumann
DOI:10.1039/b815931a
日期:——
A series of π-conjugated systems with two and three 1,3-diethyl-1,3,2-benzodiazaborolyl end-groups was synthesised in 58–91% yields using established 1,3,2-diazaborole methodologies. The bis(diazaborolyl) compounds contain thiophene -2,5-C4H2S- (2a), dithiophene -5,5′-(2,2′-C4H2S)2- (2b), phenylene -1,4-C6H4- (2c), biphenylene -4,4′-(1,1′-(C6H4)2)- (2d) and dioctylfluorene -2,7-(9,9-(C8H7)2C11H6)-
一系列具有两个和三个1,3-二乙基-1,3,2-苯并二氮杂硼烯丙基末端基团的π-共轭体系的合成产率为58-91% 1,3,2-二氮杂硼方法论。双(二氮杂硼烯丙基)化合物包含噻吩-2,5-C 4 H 2 S-(2a),二噻吩-5,5'-(2,2'-C 4 H 2 S)2-(2b),亚苯基-1,4-C 6 H 4-(2c),联苯-4,4'-(1,1'-(C 6 H 4)2)-(2d)和二辛基芴-2,7-(9,9) -(C 8 H 7)2 C 11 H 6)-(2e)桥。tris(diazaborolyl)组件中的三向接头包含一个中心亚苯基单元-1,3,5-C 6 H 3-通过噻吩-2,5-C 4 H 2 S-(3a),直接键合(3b)或通过亚苯基-1,4 -C与硼烷基末端基团连接6 H 4-(3c)单位。通过X射线晶体学研究确定2a,2b,2c,3a,3b和3c的分子结构。这些硼化系统显示出强