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Fabrication of nano/micro fibers of a photo-responsive cellulose derivative via electrospinning is demonstrated for the first time. Commercially available microcrystalline cellulose (Avicel®) is functionalized with a reversible molecular photo-switch, azobenzene, via esterification between the hydroxyl groups of cellulose and 4-(phenylazo)benzoyl chloride in anhydrous pyridine. The obtained azobenzene-functionalized...
The change in shape inducible in some photo-reversible molecules using light can effect powerful changes to a variety of properties of a host material. This class of reversible light-switchable molecules includes molecules that photo-dimerize, such as coumarins and anthracenes; those that allow intra-molecular photo-induced bond formation, such as fulgides, spiro-pyrans, and diarylethenes; and those...
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