Star-shaped oligofluorenes end-capped with carboxylic groups: syntheses and self-assembly at the liquid-solid interface.
A series of star-shaped oligofluorenes end-capped with carboxylic acid groups were synthesized. Different numbers of carboxyl groups that can form hydrogen bonds, and long alkane chains that have stabilizing effects, were intentionally introduced. The resulting molecular architectures of the so-prepared star-shaped oligofluorenes at the liquid-solid interface were investigated by scanning tunneling microscopy. It is found that the number of hydrogen-bonding groups and the symmetry of the target molecules have crucial influences on the structures of the ordered assemblies.
Ma
Zhun
Z
Institute of Advanced Materials, Fudan University, Shanghai, China.
Wang
Yan-Yan
YY
Wang
Pei
P
Huang
Wei
W
Li
Yi-Bao
YB
Lei
Sheng-Bin
SB
Yang
Yan-Lian
YL
Fan
Xiao-Lin
XL
Wang
Chen
C
D000327:Adsorption; D002264:Carboxylic Acids / Q000737:chemistry*; D005449:Fluorenes / Q000138:chemical synthesis* / Q000737:chemistry; D006860:Hydrogen Bonding; D016252:Microscopy, Scanning Tunneling; D013499:Surface Properties
D002264:Carboxylic Acids; D005449:Fluorenes; C041509:fluorene