An efficient synthesis of novel spiro[[8H]indeno[2,1-b]-thiophene-8,9′-fluorene] building block for blue light-emitting materials

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• 作者：Ling-Hai Xie ; Ting Fu ; Xiao-Ya Hou ; Chao Tang ; Yu-Ran Hua ; Rui-Jie Wang ; Qu-Li Fan ; Bo Peng ; Wei Wei and Wei Huang
• 关键词：Spiro compounds ; Spiroindenothiophenefluorene ; Blue light-emitting materials ; BF₃· ; Et₂O
• 刊名：Tetrahedron Letters
• 出版年：2006
• 出版时间：4 September 2006
• 年：2006
• 卷：47
• 期：36
• 页码：6421-6424
• 全文大小：197 K

文摘

We have developed efficient synthetic routes to obtain a novel building block spiro[[8H]indeno[2,1-b]thiophene-8,9′-fluorene] (SITF), a monothiophene-containing spirobifluorene analogue, and constructed blue light-emitting materials, including 2′,7′-bis([1,1′-biphenyl]-4-yl)-spiro[indeno[2,1-b]thiophene-8,9′-fluorene] (BBP–SITF) and 2′,7′-bis(9,9′-spirobifluoren-2-yl)spiro[[8H]indeno[2,1-b]-thiophene-8,9′-fluorene] (BSBF–SITF). BSBF–SITF has shown to be a stable blue light-emitting material with high PL quantum efficiency (89 % ) and unique regioselective feature at the C2 of thiophene, which indicate that BSBF–SITF will be useful for constructing complicated optoelectronic systems.