Synthesis and characterization of copolycarbonates having azobenzene units in the main chain as an active group for optical logic gate devices
| Autor: | Mineo Placido, G., Rescifina, Antonio, Abbadessa, Antonio, Rapisardi, Roberto, Scamporrino Andrea, A., Spitaleri, Fabiola, Mineo, Placido |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
Polymers and Plastics Photoisomerization Organic Chemistry Spectrofluorometer Bioengineering 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Photochemistry 01 natural sciences Biochemistry Fluorescence Fluorescence spectroscopy 0104 chemical sciences Gel permeation chromatography chemistry.chemical_compound Photochromism Azobenzene chemistry Copolymer 0210 nano-technology |
| Zdroj: | Polymer Chemistry. 7:6318-6329 |
| ISSN: | 1759-9962 1759-9954 |
| DOI: | 10.1039/c6py01326k |
| Popis: | This work studies the synthesis of copolymers having photochromic azobenzene groups in the main chain, obtained by copolymerization between phosgene and suitable mixtures of azo-monomer and bisphenol-A. Moreover, we show the application of our novel copolymer as a potential logic gate. The chemical and physical properties of these statistical copolymers were investigated by means of MALDI-TOF mass spectrometry, gel permeation chromatography, thermo-analytic techniques and UV-vis and fluorescence spectroscopy. The structural analysis confirmed the formation of statistical copolymers. Furthermore, some of these copolymers exhibited a trans → cis reversible photoisomerization not only in solution but also in the solid state on exposure to light of 330 or 440 nm (using a spectrofluorometer as a fully tunable light source). Finally, a discrete and unusual fluorescence was observed upon irradiation at 330 and 440 nm. An in silico TD-DFT calculation study was conducted to explain the observed fluorescence. Thanks to their spectroscopic features, these copolymers are suitable for use in photonic applications such as an optical logical gate. |
| Databáze: | OpenAIRE |
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