TY - JOUR
T1 - Photoinduced plasticity in cross-linked liquid crystalline networks
AU - McBride, M.K.
AU - Hendrikx, M.
AU - Liu, D.
AU - Worrell, B.T.
AU - Broer, D.J.
AU - Bowman, C.N.
PY - 2017/5/3
Y1 - 2017/5/3
N2 - Photoactivated reversible addition fragmentation chain transfer (RAFT)-based dynamic covalent chemistry is incorporated into liquid crystalline networks (LCNs) to facilitate spatiotemporal control of alignment, domain structure, and birefringence. The RAFT-based bond exchange process, which leads to stress relaxation, is used in a variety of conditions, to enable the LCN to achieve a near-equilibrium structure and orientation upon irradiation. Once formed, and in the absence of subsequent triggering of the RAFT process, the (dis)order in the LCN and its associated birefringence are evidenced at all temperatures. Using this approach, the birefringence, including the formation of spatially patterned birefringent elements and surface-active topographical features, is selectively tuned by adjusting the light dose, temperature, and cross-linking density.
AB - Photoactivated reversible addition fragmentation chain transfer (RAFT)-based dynamic covalent chemistry is incorporated into liquid crystalline networks (LCNs) to facilitate spatiotemporal control of alignment, domain structure, and birefringence. The RAFT-based bond exchange process, which leads to stress relaxation, is used in a variety of conditions, to enable the LCN to achieve a near-equilibrium structure and orientation upon irradiation. Once formed, and in the absence of subsequent triggering of the RAFT process, the (dis)order in the LCN and its associated birefringence are evidenced at all temperatures. Using this approach, the birefringence, including the formation of spatially patterned birefringent elements and surface-active topographical features, is selectively tuned by adjusting the light dose, temperature, and cross-linking density.
KW - adaptable networks
KW - liquid crystalline networks
KW - photoinduced plasticity
KW - reversible-addition fragmentation chain-transfer
UR - http://www.scopus.com/inward/record.url?scp=85018985309&partnerID=8YFLogxK
U2 - 10.1002/adma.201606509
DO - 10.1002/adma.201606509
M3 - Article
C2 - 28234429
AN - SCOPUS:85018985309
SN - 0935-9648
VL - 29
JO - Advanced Materials
JF - Advanced Materials
IS - 17
M1 - 1606509
ER -