By courtesy of:
Gang Zeng,* Wang-Lin Yu, Soo-Jin Chua, and Wei Huang*
Macromolecules 2002, 35, 6907
and a former paper:
Blue-Light-Emitting Fluorene-Based Polymers with Tunable Electronic Properties
Bin Liu, Wang-Lin Yu, Yee-Hing Lai, and Wei Huang*
Chem. Mater. 2001, 1984
and
Unexpected One-Pot Method to Synthesize Spiro[fluorene-9,9′-xanthene] Building Blocks for Blue-Light-Emitting Materials
Ling-Hai Xie, Feng Liu, Chao Tang, Xiao-Ya Hou, Yu-Ran Hua, Qu-Li Fan, and Wei Huang*
Org. Lett. 2006, 2787