Field photoresponsive polymers

WJ Li, A Gharavi, Q Wang, LP Yu. In IM Khan, JS Harrison, eds. Field Responsive Polymers Electroresponsive, Photoresponsive, and Responsive Polymers in Chemistry and Biology, Washington, DC, American Chemical Society, 1999, p 237. 

B-1999MI2 I. M. Khan and J. S. Harrison, Eds. Acs Symposium Field Responsive Polymers Electroresponsive, Photoresponsive and... 

Irie, M. (1986) Photoresponsive Polymers. Reversible Bending of Rod-Shaped Acrylamide Gels in an Electric Field, Macromolecules, 19, 2890-2. 

Field responsive polymers electroresponsive, photoresponsive, and responsive polymers in chemistry and biology/Ishrat M. Khan, editor, Joycelyn S. Harrison, editor. 

Among various photoisomeric units, azobenzene has been most widely used to construct photoresponsive polymers, as is apparent in applications to the field of polypeptides, already separately discussed in the previous section. 

N. Marjanovic, et al., Photoresponse of organic field-effect transistors based on conjugated polymer/fullerene blends, Organic Electronics 1 (2006) 188-194. 

It is obvious, as stated by Rondelez that these photochromic phenomena occurring in two dimensions result in a dynamic photoresponse of polymer films. These films can be considered as model photoreceptors for photoregulated biological processes they could play an important role in many fields as photoprinting and photocontrolled drug release from vesicles. 

In addition to investigating ferroelectric liquid crystalline conjugated polymers with dynamic switching functionahties under an electric field, our group has also developed photoresponsive liquid crystalline conjugated polymers with dynamic switching of linearly and circularly polarized luminescence. This was accomplished through the use of a photoisomerizable moiety in the polymer side chain. 

N. Marjanovic, T. B. Singh, G. Dennler, S. Giines, H. Neugebauer, N. S. Sariciftci, R. Schwodiauer, S. Bauer, Photoresponse of Organic Field-Effect Transistors Based on Conjugated Polymer/Fullerene Blends. Org. Electron. 2006,7, 188-194. 

Another attractive field of research in combination with muticomponent polymerizations is that of photochemical reactions. The modular nature of MCRs allows the simple introduction of photoresponsive moieties, offering novel and extremely versatile reaction or modification possibilities. For instance, the Passerini addition polymerization of adipic acid, 1,6-diisocyanohexane, and photosensitive 2-nitrobenzaldehyde led to poly(ester-amide)s with photolabile linkages in the backbone (Scheme 6) [43]. UV-irradiation (2 = 365 nm) of the polymer solution... 

Physical stimuli will affect the energy level and/or distribution within the materials and change the molecular interactions at a critical onset point (Gil and Hudson, 2004). Within the scope of this chapter, photoresponsive, thermoresponsive, electrorespon-sive, and magnetoresponsive polymers that respond to variation of light, temperature, electrical field, or magnetic field, respectively, will be discussed. Nevertheless, other... 

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