Synthesis and photoresponsive behaviors of novel poly(arylene ether)s with di-azobenzene pendants
摘要:
Novel poly(arylene ether)s containing di-azobenzene moieties (diazo-PAEs) were synthesized from a new di-azobenzene monomer, bis(4-((4-cyanophenyl)diazenyl)phenyl)5,5'-carbonylbis(2-fluorobenzenesulfonate). These polymers show good thermal stability, with glass transition temperatures and 5% weight-loss temperatures above 160 degrees C and 406 degrees C, respectively. Upon irradiation with a 532 nm neodymium dope yttrium aluminum garnet (Nd:YAG) laser beam, these polymers present a high remnant value, and no fatigue phenomena were observed after several cycles of inscription-erasure-inscription sequences. By exposing diazo-PAE films to an interference pattern of laser beams (355 nm) at modest intensity (approximately 80 mW/cm(2)), stable surface relief gratings (SRGs) can be formed. (c) 2011 Elsevier Ltd. All rights reserved.
Synthesis and photoresponsive behaviors of novel poly(arylene ether)s with di-azobenzene pendants
摘要:
Novel poly(arylene ether)s containing di-azobenzene moieties (diazo-PAEs) were synthesized from a new di-azobenzene monomer, bis(4-((4-cyanophenyl)diazenyl)phenyl)5,5'-carbonylbis(2-fluorobenzenesulfonate). These polymers show good thermal stability, with glass transition temperatures and 5% weight-loss temperatures above 160 degrees C and 406 degrees C, respectively. Upon irradiation with a 532 nm neodymium dope yttrium aluminum garnet (Nd:YAG) laser beam, these polymers present a high remnant value, and no fatigue phenomena were observed after several cycles of inscription-erasure-inscription sequences. By exposing diazo-PAE films to an interference pattern of laser beams (355 nm) at modest intensity (approximately 80 mW/cm(2)), stable surface relief gratings (SRGs) can be formed. (c) 2011 Elsevier Ltd. All rights reserved.
BIS(ARYL)SULFONIMIDE FUNCTIONALIZED ION CONDUCTING POLYMERS
申请人:Olmeijer David
公开号:US20080286626A1
公开(公告)日:2008-11-20
The invention provides ion conducting copolymers containing pendant bis(aryl)sulfonimide groups that are used to make polymer electrolyte membranes (PEM's), catalyst coated proton exchange membranes (CCM's) and membrane electrode assemblies (MEA's) that are useful in fuel cells and their application in electronic devices, power sources and vehicles.
US7288599B2
申请人:——
公开号:US7288599B2
公开(公告)日:2007-10-30
Synthesis and photoresponsive behaviors of novel poly(arylene ether)s with di-azobenzene pendants
Novel poly(arylene ether)s containing di-azobenzene moieties (diazo-PAEs) were synthesized from a new di-azobenzene monomer, bis(4-((4-cyanophenyl)diazenyl)phenyl)5,5'-carbonylbis(2-fluorobenzenesulfonate). These polymers show good thermal stability, with glass transition temperatures and 5% weight-loss temperatures above 160 degrees C and 406 degrees C, respectively. Upon irradiation with a 532 nm neodymium dope yttrium aluminum garnet (Nd:YAG) laser beam, these polymers present a high remnant value, and no fatigue phenomena were observed after several cycles of inscription-erasure-inscription sequences. By exposing diazo-PAE films to an interference pattern of laser beams (355 nm) at modest intensity (approximately 80 mW/cm(2)), stable surface relief gratings (SRGs) can be formed. (c) 2011 Elsevier Ltd. All rights reserved.