Efficient tuning of electroluminescence from sky-blue to deep-blue by changing the constitution of spirobenzofluorene derivatives

H Liang, X Wang, X Zhang, Z Ge, X Ouyang, S Wang

Index: Liang, Houjie; Wang, Xinxin; Zhang, Xingye; Ge, Ziyi; Ouyang, Xinhua; Wang, Suidong Dyes and Pigments, 2014 , vol. 108, p. 57 - 63

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Citation Number: 14

Abstract

Abstract Two novel benzimidazole-attached spiro [benzofluorene] derivatives, 2, 2′-(spiro [benzo [c] fluorine-7, 9′-fluorene]-5, 9-diylbis (4, 1-phenylene)) bis (1-phenyl-1H-benzo [d] imidazole) and 2, 2′-(spiro [benzo-[de] anthracene-7, 9′-fluorene]-2′, 3-diylbis (4, 1- phenylene)) bis (1-phenyl-1H-benzo [d] imidazole), were prepared by a Suzuki coupling reaction. Their photophysical and photochemical properties were studied systemically. ...