Three-dimensionally packed nanohelical phase in chiral block copolymers.
Chirality-driven microphase-separated morphology, poly(l-lactide) (PLLA) left-handed nanohelices hexagonally packed in PS matrix, was obtained from chiral diblock copolymers, poly(styrene)-b-poly(l-lactide). This is perhaps for the first time; the helical superstructures of chiral block copolymers were generated in the bulk and self-assembled to a two-dimensionally (2D) packed lattice. Now, the analyses of block copolymer thermodynamics should be complicated by the chiral entities of constituted components. Orderly packed nanohelical channels can be obtained after hydrolysis, and this provides new opportunities for block copolymer applications in the fields of nanosciences.
Ho
Rong-Ming
RM
Department of Chemical Engineering, National Tsing-Hua University, and Union Chemical Laboratories, Industrial Technology Research Institute, Hsinchu 30013, Taiwan. rmho@mx.nthu.edu.tw
Chiang
Yeo-Wan
YW
Tsai
Chi-Chun
CC
Lin
Chu-Chieh
CC
Ko
Bao-Tsan
BT
Huang
Bor-Han
BH