Photo-responsive polymers based on ο-Nitrobenzyl derivatives: from structural design to applications

Non‐linear functional polymers containing selective/cleavable bonds: Synthesis and their biomedical applications

“…O-nitrobenzyl (ONB) derivatives are one of the common groups implemented at the middle site of the chain via controlled polymerizations, coupling reactions, and their combinations. 97 By exposure to UV light, the ONB groups can be broken down via photoisomerization. 97 In the case of bottlebrush polymers, a photo-cleavable bond can be introduced not only within the polymeric backbones or side chains but also between the side chain and backbone chains.…”

“…97 By exposure to UV light, the ONB groups can be broken down via photoisomerization. 97 In the case of bottlebrush polymers, a photo-cleavable bond can be introduced not only within the polymeric backbones or side chains but also between the side chain and backbone chains. A series of UV-cleavable bottlebrush polymers with o-nitrobenzyl-linked at the side chains of the polymer was synthesized by using the "grafting-onto" strategy.…”

Fibrous Structures: An Overview of Their Responsiveness to External Stimuli towards Intended Application

“…As it will be subsequently discussed, temperature, as a stimulus, enables dynamic changes in material properties and is the most well comprehended phenomenon [45]. On its turn, light is a noninvasive and precise external trigger [46], and pH is useful in applications where environmental pH variations can act as triggers. In this section, the focus will be on exploring the responsiveness of fibrous structures to temperature, light, and pH stimuli, and which elements can be integrated in those structures to make them responsive.…”

“…Light emerges as a cost-effective, safe, and readily available energy source, setting it apart from alternative stimuli such as temperature, pH, and enzymes [46]. A noteworthy advantage of light lies in its noncontact nature when instigating responsive behaviors [46].…”

“…Light emerges as a cost-effective, safe, and readily available energy source, setting it apart from alternative stimuli such as temperature, pH, and enzymes [46]. A noteworthy advantage of light lies in its noncontact nature when instigating responsive behaviors [46]. The precision in controlling photo-responsive structures is achieved with high spatial and temporal resolution by manipulating parameters like wavelength, intensity, exposure area, and irradiation time of incident light [46].…”