Novel h-shaped persistent architecture based on a dispiro building block system.
[structure: see text] A novel dispiro building block, dispiro[fluorene-9,5'(7'H)-diindeno[2,1-b:1',2'-d]thiophene-7',9' '-fluorene], and its two derivatives, TBP-DSFDITF and TDOF-DSFDITF, were designed and synthesized. Because of the rigidity and orthogonality of the spiro structure, TBP-DSFDITF exhibits a well-defined H-shaped architecture, which consists of two ter(biphenyls) as the arms of the H-shape and 3,4-diphenylthiophene as the rung, connecting via completely rigid dispiro linkages with two sp(3) carbon atoms.
Xie
Ling-Hai
LH
Institute of Advanced Materials (IAM), Fudan University, Shanghai 200433, China.
Hou
Xiao-Ya
XY
Tang
Chao
C
Hua
Yu-Ran
YR
Wang
Rui-Jie
RJ
Chen
Run-Feng
RF
Fan
Qu-Li
QL
Wang
Lian-Hui
LH
Wei
Wei
W
Peng
Bo
B
Huang
Wei
W