Nonlinear Optical Properties and Liquid-Crystalline Behavior of New Polyesters with Dipole Moments Aligned Transverse to the Backbone

Challenges for Natural Monomers and Polymers: Novel Design Strategies and Engineering to Develop Advanced Polymers

“…The d 33 value is higher when poled at 280 • C than when poled at 240 • C. This shows that the polymer possessed excellent orientational and thermal stabilities which is attributed to the rigid and aromatic nature of the polymer chain [208]. These data support the hypothesis that renewable resource based natural monomers and polymers could be chemically transformed to meet highperformance and functional properties for special applications, and these concepts were applied to design related synthetically inspired NLO polymers [213,214].…”

“…As they combine the properties of anisotropy with photo responsive behavior in a single polymer, they find applications in areas such as optical storage devices, data processing and light modulation [203][204][205][206][207][208][209][210][211][212][213][214]. It is possible to bring down the transition temperature and increase solubility in common solvents by introducing long flexible alkyl side-chain laterally to the backbone of linearly rigid rod azobenzene moiety [203][204][205][206].…”

New side-chain azo-polymers for optical applications: synthesis and characterization

“…to match as much as possible specific application requirements, such as hindrance of excessive chromophore-chromophore interactions, enhanced film-forming, thermal, optical and mechanical properties [4,5,8,14,16]. A wide range of backbones, used as scaffolds for azo-moieties, are reported in literature, like methacrylates [21,26], maleimides [28,29], imides [30,31], thiophenes [32,33], urethanes [34,35], and esters [36,37] to name a few. Different azo dyes have been tailored by aromatic ring substitution [4] to be used in function of their photochromism [1], photoluminescence [38], or nonlinear optical response [14].…”

Percutaneous recanalization of chronic subclavian artery occlusion using optical coherence reflectometry‐guided radiofrequency ablation guidewire

“…It has been shown that introducing the liquid‐crystalline (LC) phase enhances the NLO property by increasing the efficiency of alignment of the polymer during poling. Some of the earliest work on NLO polymers5 and recent work21–24 were based on liquid‐crystalline polymers (LCPs). A combination of both NLO properties and LC properties in a polymer is desirable.…”

“…In the LC phase, the mesogenic moieties are ranged in a parallel orientation. Therefore, one can gain a net polar ordering by starting from an already LC system; this may result in enhanced NLO effects 22–24. Also, thermotropic main chain LCPs (MCLCPs) (TLCPs) possess excellent dry electrical properties favoring LCP films in electronic applications.…”