Chimie analytique : une revue indienne
ISSN (PRINT): 0974-7419

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Characterization of ladder-type polydiacetylene exhibiting reversible thermochromismwith wide temperature range

Yuuki Miyazaki, Kazuo Okamoto, Masatoshi Tokita, KenjiOgino


Thin film of ladder-shaped polydiacetylene (PDA) is fabricated by photo-polymerization of bis(diacetylene)monomer, LDAwith a phenylenedicarbamate. The polyLDAexhibits thermochromismin thewide temperature range. The analyses by IR and XRD suggest that conformation of alkyl chains induces the torsion of PDAresulting in the thermochromism. The reversibility can be explained bythe fact that packing between dicarbamate moieties prevents froma drastic change.The blended film with polystyreneexhibitsthe similar thermochromismas that of polyLDA.


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