An ensemble of Zn 2+ with a rhodamine B-3-allylsalicylaldehyde hydrazone as novel photosensitive material: Photochromism, photopatterning, photoprinting and molecular logic gates.

Autor: Rai A; Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, India., Singh AK; Department of Chemistry, Babasaheb Bhimrao Ambedkar University, Lucknow, India., Sonkar AK; Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, India., Tripathi K; Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, India., Mishra L; Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, India. Electronic address: lmishrabhu@yahoo.co.in.
Jazyk: angličtina
Zdroj: Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy [Spectrochim Acta A Mol Biomol Spectrosc] 2019 Jun 05; Vol. 216, pp. 1-6. Date of Electronic Publication: 2019 Mar 04.
DOI: 10.1016/j.saa.2019.03.003
Abstrakt: An ensemble of Zn 2+ with Rhodamine B-3-allylsalicylaldehyde hydrazone (1-Zn 2+ ), has been synthesized and fully characterized using spectroscopic techniques. A solution of 1-Zn 2+ in THF, displays color changes from light yellow to pink color in the presence UV light (λ, 405 nm). The process is reversible and owes to keto-enol tautomerism which allows the opening of spirolactam ring of rhodamine in the presence of UV light. It is corroborated by the appearance of a new peak at λ max  = 554 nm. The ensemble, 1-Zn 2+ embedded in the matrix of silica gel, displays photo patterning phenomena initiated by the conventional light sources including sunlight. It also displays photoprinting property with a laser pen (λ 405 nm) and has been displayed by a videography. The module 1-Zn 2+ meets real challenges through a simple synthetic route, fast response, and as a binary data storage system with non-destructive optical identity.
(Copyright © 2019 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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