INTEMA   05428
INSTITUTO DE INVESTIGACIONES EN CIENCIA Y TECNOLOGIA DE MATERIALES
Unidad Ejecutora - UE
artículos
Título:
Effects of block copolymer self-assembly effects on optical anisotropy in azobenzene-containing PS-b-PMMA films
Autor/es:
A. B. OROFINO; CAMEZZANA M. F.; GALANTE M.J; OYANGUREN P. A.; ZUCCHI I.
Revista:
NANOTECHNOLOGY
Editorial:
IOP PUBLISHING LTD
Referencias:
Lugar: Londres; Año: 2012 vol. 23 p. 115604 - 115612
ISSN:
0957-4484
Resumen:
Polystyrene-b-polymethylmethacrylate (PS-b-PMMA) was selected as the host for
4-(4-nitrophenylazo)aniline (Disperse Orange 3, DO3) based on a previous study of
DO3=PMMA and DO3=PS binary blends. Selective location of DO3 into the PMMA block of
the copolymer was expected during self-assembly of the block copolymer since a preferential
interaction of DO3 with PMMA has been demonstrated. However, surface segregation of DO3
was found during the thermal annealing used to nanostructure the copolymer. To avoid this, a
thermoplastic polymer (Azo-TP) was synthesized from the bulk reaction of DO3 and
diglycidyl ether of bisphenol A (DGEBA). The choice of DGEBA as a co-reactant was an
attempt to encourage the selective location of azo groups in the PMMA phase of
PS-b-PMMA. An inspection of solutions of Azo-TP in PS and PMMA, corroborates the
preferential affinity of Azo-TP for PMMA. The Azo-TP could be satisfactorily dissolved in
PS-b-PMMA. We have investigated the growth and decay processes of the optically induced
birefringence in films of PS-b-PMMA containing 12 wt% Azo-TP. The resulting materials
showed a good photoinduced time response, high maximum birefringence and an elevated
fraction of remnant anisotropy.
showed a good photoinduced time response, high maximum birefringence and an elevated
fraction of remnant anisotropy.
birefringence in films of PS-b-PMMA containing 12 wt% Azo-TP. The resulting materials
showed a good photoinduced time response, high maximum birefringence and an elevated
fraction of remnant anisotropy.
showed a good photoinduced time response, high maximum birefringence and an elevated
fraction of remnant anisotropy.
preferential affinity of Azo-TP for PMMA. The Azo-TP could be satisfactorily dissolved in
PS-b-PMMA. We have investigated the growth and decay processes of the optically induced
birefringence in films of PS-b-PMMA containing 12 wt% Azo-TP. The resulting materials
showed a good photoinduced time response, high maximum birefringence and an elevated
fraction of remnant anisotropy.
showed a good photoinduced time response, high maximum birefringence and an elevated
fraction of remnant anisotropy.
birefringence in films of PS-b-PMMA containing 12 wt% Azo-TP. The resulting materials
showed a good photoinduced time response, high maximum birefringence and an elevated
fraction of remnant anisotropy.
showed a good photoinduced time response, high maximum birefringence and an elevated
fraction of remnant anisotropy.
the copolymer was expected during self-assembly of the block copolymer since a preferential
interaction of DO3 with PMMA has been demonstrated. However, surface segregation of DO3
was found during the thermal annealing used to nanostructure the copolymer. To avoid this, a
thermoplastic polymer (Azo-TP) was synthesized from the bulk reaction of DO3 and
diglycidyl ether of bisphenol A (DGEBA). The choice of DGEBA as a co-reactant was an
attempt to encourage the selective location of azo groups in the PMMA phase of
PS-b-PMMA. An inspection of solutions of Azo-TP in PS and PMMA, corroborates the
preferential affinity of Azo-TP for PMMA. The Azo-TP could be satisfactorily dissolved in
PS-b-PMMA. We have investigated the growth and decay processes of the optically induced
birefringence in films of PS-b-PMMA containing 12 wt% Azo-TP. The resulting materials
showed a good photoinduced time response, high maximum birefringence and an elevated
fraction of remnant anisotropy.
showed a good photoinduced time response, high maximum birefringence and an elevated
fraction of remnant anisotropy.
birefringence in films of PS-b-PMMA containing 12 wt% Azo-TP. The resulting materials
showed a good photoinduced time response, high maximum birefringence and an elevated
fraction of remnant anisotropy.
showed a good photoinduced time response, high maximum birefringence and an elevated
fraction of remnant anisotropy.
preferential affinity of Azo-TP for PMMA. The Azo-TP could be satisfactorily dissolved in
PS-b-PMMA. We have investigated the growth and decay processes of the optically induced
birefringence in films of PS-b-PMMA containing 12 wt% Azo-TP. The resulting materials
showed a good photoinduced time response, high maximum birefringence and an elevated
fraction of remnant anisotropy.
showed a good photoinduced time response, high maximum birefringence and an elevated
fraction of remnant anisotropy.
birefringence in films of PS-b-PMMA containing 12 wt% Azo-TP. The resulting materials
showed a good photoinduced time response, high maximum birefringence and an elevated
fraction of remnant anisotropy.
showed a good photoinduced time response, high maximum birefringence and an elevated
fraction of remnant anisotropy.
4-(4-nitrophenylazo)aniline (Disperse Orange 3, DO3) based on a previous study of
DO3=PMMA and DO3=PS binary blends. Selective location of DO3 into the PMMA block of
the copolymer was expected during self-assembly of the block copolymer since a preferential
interaction of DO3 with PMMA has been demonstrated. However, surface segregation of DO3
was found during the thermal annealing used to nanostructure the copolymer. To avoid this, a
thermoplastic polymer (Azo-TP) was synthesized from the bulk reaction of DO3 and
diglycidyl ether of bisphenol A (DGEBA). The choice of DGEBA as a co-reactant was an
attempt to encourage the selective location of azo groups in the PMMA phase of
PS-b-PMMA. An inspection of solutions of Azo-TP in PS and PMMA, corroborates the
preferential affinity of Azo-TP for PMMA. The Azo-TP could be satisfactorily dissolved in
PS-b-PMMA. We have investigated the growth and decay processes of the optically induced
birefringence in films of PS-b-PMMA containing 12 wt% Azo-TP. The resulting materials
showed a good photoinduced time response, high maximum birefringence and an elevated
fraction of remnant anisotropy.
showed a good photoinduced time response, high maximum birefringence and an elevated
fraction of remnant anisotropy.
birefringence in films of PS-b-PMMA containing 12 wt% Azo-TP. The resulting materials
showed a good photoinduced time response, high maximum birefringence and an elevated
fraction of remnant anisotropy.
showed a good photoinduced time response, high maximum birefringence and an elevated
fraction of remnant anisotropy.
preferential affinity of Azo-TP for PMMA. The Azo-TP could be satisfactorily dissolved in
PS-b-PMMA. We have investigated the growth and decay processes of the optically induced
birefringence in films of PS-b-PMMA containing 12 wt% Azo-TP. The resulting materials
showed a good photoinduced time response, high maximum birefringence and an elevated
fraction of remnant anisotropy.
showed a good photoinduced time response, high maximum birefringence and an elevated
fraction of remnant anisotropy.
birefringence in films of PS-b-PMMA containing 12 wt% Azo-TP. The resulting materials
showed a good photoinduced time response, high maximum birefringence and an elevated
fraction of remnant anisotropy.
showed a good photoinduced time response, high maximum birefringence and an elevated
fraction of remnant anisotropy.
the copolymer was expected during self-assembly of the block copolymer since a preferential
interaction of DO3 with PMMA has been demonstrated. However, surface segregation of DO3
was found during the thermal annealing used to nanostructure the copolymer. To avoid this, a
thermoplastic polymer (Azo-TP) was synthesized from the bulk reaction of DO3 and
diglycidyl ether of bisphenol A (DGEBA). The choice of DGEBA as a co-reactant was an
attempt to encourage the selective location of azo groups in the PMMA phase of
PS-b-PMMA. An inspection of solutions of Azo-TP in PS and PMMA, corroborates the
preferential affinity of Azo-TP for PMMA. The Azo-TP could be satisfactorily dissolved in
PS-b-PMMA. We have investigated the growth and decay processes of the optically induced
birefringence in films of PS-b-PMMA containing 12 wt% Azo-TP. The resulting materials
showed a good photoinduced time response, high maximum birefringence and an elevated
fraction of remnant anisotropy.
showed a good photoinduced time response, high maximum birefringence and an elevated
fraction of remnant anisotropy.
birefringence in films of PS-b-PMMA containing 12 wt% Azo-TP. The resulting materials
showed a good photoinduced time response, high maximum birefringence and an elevated
fraction of remnant anisotropy.
showed a good photoinduced time response, high maximum birefringence and an elevated
fraction of remnant anisotropy.
preferential affinity of Azo-TP for PMMA. The Azo-TP could be satisfactorily dissolved in
PS-b-PMMA. We have investigated the growth and decay processes of the optically induced
birefringence in films of PS-b-PMMA containing 12 wt% Azo-TP. The resulting materials
showed a good photoinduced time response, high maximum birefringence and an elevated
fraction of remnant anisotropy.
showed a good photoinduced time response, high maximum birefringence and an elevated
fraction of remnant anisotropy.
birefringence in films of PS-b-PMMA containing 12 wt% Azo-TP. The resulting materials
showed a good photoinduced time response, high maximum birefringence and an elevated
fraction of remnant anisotropy.
showed a good photoinduced time response, high maximum birefringence and an elevated
fraction of remnant anisotropy.
b-polymethylmethacrylate (PS-b-PMMA) was selected as the host for
4-(4-nitrophenylazo)aniline (Disperse Orange 3, DO3) based on a previous study of
DO3=PMMA and DO3=PS binary blends. Selective location of DO3 into the PMMA block of
the copolymer was expected during self-assembly of the block copolymer since a preferential
interaction of DO3 with PMMA has been demonstrated. However, surface segregation of DO3
was found during the thermal annealing used to nanostructure the copolymer. To avoid this, a
thermoplastic polymer (Azo-TP) was synthesized from the bulk reaction of DO3 and
diglycidyl ether of bisphenol A (DGEBA). The choice of DGEBA as a co-reactant was an
attempt to encourage the selective location of azo groups in the PMMA phase of
PS-b-PMMA. An inspection of solutions of Azo-TP in PS and PMMA, corroborates the
preferential affinity of Azo-TP for PMMA. The Azo-TP could be satisfactorily dissolved in
PS-b-PMMA. We have investigated the growth and decay processes of the optically induced
birefringence in films of PS-b-PMMA containing 12 wt% Azo-TP. The resulting materials
showed a good photoinduced time response, high maximum birefringence and an elevated
fraction of remnant anisotropy.
showed a good photoinduced time response, high maximum birefringence and an elevated
fraction of remnant anisotropy.
birefringence in films of PS-b-PMMA containing 12 wt% Azo-TP. The resulting materials
showed a good photoinduced time response, high maximum birefringence and an elevated
fraction of remnant anisotropy.
showed a good photoinduced time response, high maximum birefringence and an elevated
fraction of remnant anisotropy.
preferential affinity of Azo-TP for PMMA. The Azo-TP could be satisfactorily dissolved in
PS-b-PMMA. We have investigated the growth and decay processes of the optically induced
birefringence in films of PS-b-PMMA containing 12 wt% Azo-TP. The resulting materials
showed a good photoinduced time response, high maximum birefringence and an elevated
fraction of remnant anisotropy.
showed a good photoinduced time response, high maximum birefringence and an elevated
fraction of remnant anisotropy.
birefringence in films of PS-b-PMMA containing 12 wt% Azo-TP. The resulting materials
showed a good photoinduced time response, high maximum birefringence and an elevated
fraction of remnant anisotropy.
showed a good photoinduced time response, high maximum birefringence and an elevated
fraction of remnant anisotropy.
the copolymer was expected during self-assembly of the block copolymer since a preferential
interaction of DO3 with PMMA has been demonstrated. However, surface segregation of DO3
was found during the thermal annealing used to nanostructure the copolymer. To avoid this, a
thermoplastic polymer (Azo-TP) was synthesized from the bulk reaction of DO3 and
diglycidyl ether of bisphenol A (DGEBA). The choice of DGEBA as a co-reactant was an
attempt to encourage the selective location of azo groups in the PMMA phase of
PS-b-PMMA. An inspection of solutions of Azo-TP in PS and PMMA, corroborates the
preferential affinity of Azo-TP for PMMA. The Azo-TP could be satisfactorily dissolved in
PS-b-PMMA. We have investigated the growth and decay processes of the optically induced
birefringence in films of PS-b-PMMA containing 12 wt% Azo-TP. The resulting materials
showed a good photoinduced time response, high maximum birefringence and an elevated
fraction of remnant anisotropy.
showed a good photoinduced time response, high maximum birefringence and an elevated
fraction of remnant anisotropy.
birefringence in films of PS-b-PMMA containing 12 wt% Azo-TP. The resulting materials
showed a good photoinduced time response, high maximum birefringence and an elevated
fraction of remnant anisotropy.
showed a good photoinduced time response, high maximum birefringence and an elevated
fraction of remnant anisotropy.
preferential affinity of Azo-TP for PMMA. The Azo-TP could be satisfactorily dissolved in
PS-b-PMMA. We have investigated the growth and decay processes of the optically induced
birefringence in films of PS-b-PMMA containing 12 wt% Azo-TP. The resulting materials
showed a good photoinduced time response, high maximum birefringence and an elevated
fraction of remnant anisotropy.
showed a good photoinduced time response, high maximum birefringence and an elevated
fraction of remnant anisotropy.
birefringence in films of PS-b-PMMA containing 12 wt% Azo-TP. The resulting materials
showed a good photoinduced time response, high maximum birefringence and an elevated
fraction of remnant anisotropy.
showed a good photoinduced time response, high maximum birefringence and an elevated
fraction of remnant anisotropy.
=PMMA and DO3=PS binary blends. Selective location of DO3 into the PMMA block of
the copolymer was expected during self-assembly of the block copolymer since a preferential
interaction of DO3 with PMMA has been demonstrated. However, surface segregation of DO3
was found during the thermal annealing used to nanostructure the copolymer. To avoid this, a
thermoplastic polymer (Azo-TP) was synthesized from the bulk reaction of DO3 and
diglycidyl ether of bisphenol A (DGEBA). The choice of DGEBA as a co-reactant was an
attempt to encourage the selective location of azo groups in the PMMA phase of
PS-b-PMMA. An inspection of solutions of Azo-TP in PS and PMMA, corroborates the
preferential affinity of Azo-TP for PMMA. The Azo-TP could be satisfactorily dissolved in
PS-b-PMMA. We have investigated the growth and decay processes of the optically induced
birefringence in films of PS-b-PMMA containing 12 wt% Azo-TP. The resulting materials
showed a good photoinduced time response, high maximum birefringence and an elevated
fraction of remnant anisotropy.
showed a good photoinduced time response, high maximum birefringence and an elevated
fraction of remnant anisotropy.
birefringence in films of PS-b-PMMA containing 12 wt% Azo-TP. The resulting materials
showed a good photoinduced time response, high maximum birefringence and an elevated
fraction of remnant anisotropy.
showed a good photoinduced time response, high maximum birefringence and an elevated
fraction of remnant anisotropy.
preferential affinity of Azo-TP for PMMA. The Azo-TP could be satisfactorily dissolved in
PS-b-PMMA. We have investigated the growth and decay processes of the optically induced
birefringence in films of PS-b-PMMA containing 12 wt% Azo-TP. The resulting materials
showed a good photoinduced time response, high maximum birefringence and an elevated
fraction of remnant anisotropy.
showed a good photoinduced time response, high maximum birefringence and an elevated
fraction of remnant anisotropy.
birefringence in films of PS-b-PMMA containing 12 wt% Azo-TP. The resulting materials
showed a good photoinduced time response, high maximum birefringence and an elevated
fraction of remnant anisotropy.
showed a good photoinduced time response, high maximum birefringence and an elevated
fraction of remnant anisotropy.
b-PMMA. An inspection of solutions of Azo-TP in PS and PMMA, corroborates the
preferential affinity of Azo-TP for PMMA. The Azo-TP could be satisfactorily dissolved in
PS-b-PMMA. We have investigated the growth and decay processes of the optically induced
birefringence in films of PS-b-PMMA containing 12 wt% Azo-TP. The resulting materials
showed a good photoinduced time response, high maximum birefringence and an elevated
fraction of remnant anisotropy.
showed a good photoinduced time response, high maximum birefringence and an elevated
fraction of remnant anisotropy.
birefringence in films of PS-b-PMMA containing 12 wt% Azo-TP. The resulting materials
showed a good photoinduced time response, high maximum birefringence and an elevated
fraction of remnant anisotropy.
showed a good photoinduced time response, high maximum birefringence and an elevated
fraction of remnant anisotropy.
b-PMMA. We have investigated the growth and decay processes of the optically induced
birefringence in films of PS-b-PMMA containing 12 wt% Azo-TP. The resulting materials
showed a good photoinduced time response, high maximum birefringence and an elevated
fraction of remnant anisotropy.
showed a good photoinduced time response, high maximum birefringence and an elevated
fraction of remnant anisotropy.
b-PMMA containing 12 wt% Azo-TP. The resulting materials
showed a good photoinduced time response, high maximum birefringence and an elevated
fraction of remnant anisotropy.