Optical investigations and photoactive solar energy applications of new synthesized Schiff base liquid crystal derivatives

Abstract New homologues series of liquid crystalline materials namely, (E)-3-methoxy-4-[(p-tolylimino)methyl]phenyl 4-alkloxybenzoates (I-n), were designed and evaluated for their mesomorphic and optical behavior. The prepared series constitutes three members that differ from each other by the termi...

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Autores principales:	Fowzia S. Alamro, Sobhi M. Gomha, Mohamed Shaban, Abeer S. Altowyan, Tariq Z. Abolibda, Hoda A. Ahmed
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/7e93e94bb83c4822961a0663f33a5f72
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spelling	oai:doaj.org-article:7e93e94bb83c4822961a0663f33a5f722021-12-02T16:17:21ZOptical investigations and photoactive solar energy applications of new synthesized Schiff base liquid crystal derivatives10.1038/s41598-021-94533-62045-2322https://doaj.org/article/7e93e94bb83c4822961a0663f33a5f722021-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-94533-6https://doaj.org/toc/2045-2322Abstract New homologues series of liquid crystalline materials namely, (E)-3-methoxy-4-[(p-tolylimino)methyl]phenyl 4-alkloxybenzoates (I-n), were designed and evaluated for their mesomorphic and optical behavior. The prepared series constitutes three members that differ from each other by the terminally attached alkoxy chain group, these vary between 6 and 12 carbons. A laterally OCH3 group is incorporated into the central benzene ring in meta position with respect to the ester moiety. Mesomorphic characterizations of the prepared derivatives are conducted using differential scanning-calorimetry (DSC), polarized optical-microscopy (POM). Molecular structures were elucidated by elemental analyses and NMR spectroscopy. DSC and POM investigations revealed that all the synthesized derivatives are purely nematogenic exhibiting only nematic (N) mesophase, except for the longest chain derivative (I-12) that is dimorphic possesses smectic A and N phases. Moreover, all members of the group have a wide mesomorphic range with high thermal nematic stability. A comparative study was established between the present derivative (I-6) and their previously prepared isomer. The results indicated that the location exchange of the polar compact group (CH3) influences the N mesophase stability and range. The electrical measurements revealed that all synthesized series I-n show Ohmic behaviors with effective electric resistances in the GΩ range. Under white light illumination, the effective electric conductivity for the compound I-8 is five times that obtained in dark conditions. This derivative also showed two direct optical band gaps in the UV and visible light range. In addition, I-6 has band energy gaps of values 1.07 and 2.79 eV, which are suitable for solar energy applications.Fowzia S. AlamroSobhi M. GomhaMohamed ShabanAbeer S. AltowyanTariq Z. AbolibdaHoda A. AhmedNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-11 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Fowzia S. Alamro Sobhi M. Gomha Mohamed Shaban Abeer S. Altowyan Tariq Z. Abolibda Hoda A. Ahmed Optical investigations and photoactive solar energy applications of new synthesized Schiff base liquid crystal derivatives
description	Abstract New homologues series of liquid crystalline materials namely, (E)-3-methoxy-4-[(p-tolylimino)methyl]phenyl 4-alkloxybenzoates (I-n), were designed and evaluated for their mesomorphic and optical behavior. The prepared series constitutes three members that differ from each other by the terminally attached alkoxy chain group, these vary between 6 and 12 carbons. A laterally OCH3 group is incorporated into the central benzene ring in meta position with respect to the ester moiety. Mesomorphic characterizations of the prepared derivatives are conducted using differential scanning-calorimetry (DSC), polarized optical-microscopy (POM). Molecular structures were elucidated by elemental analyses and NMR spectroscopy. DSC and POM investigations revealed that all the synthesized derivatives are purely nematogenic exhibiting only nematic (N) mesophase, except for the longest chain derivative (I-12) that is dimorphic possesses smectic A and N phases. Moreover, all members of the group have a wide mesomorphic range with high thermal nematic stability. A comparative study was established between the present derivative (I-6) and their previously prepared isomer. The results indicated that the location exchange of the polar compact group (CH3) influences the N mesophase stability and range. The electrical measurements revealed that all synthesized series I-n show Ohmic behaviors with effective electric resistances in the GΩ range. Under white light illumination, the effective electric conductivity for the compound I-8 is five times that obtained in dark conditions. This derivative also showed two direct optical band gaps in the UV and visible light range. In addition, I-6 has band energy gaps of values 1.07 and 2.79 eV, which are suitable for solar energy applications.
format	article
author	Fowzia S. Alamro Sobhi M. Gomha Mohamed Shaban Abeer S. Altowyan Tariq Z. Abolibda Hoda A. Ahmed
author_facet	Fowzia S. Alamro Sobhi M. Gomha Mohamed Shaban Abeer S. Altowyan Tariq Z. Abolibda Hoda A. Ahmed
author_sort	Fowzia S. Alamro
title	Optical investigations and photoactive solar energy applications of new synthesized Schiff base liquid crystal derivatives
title_short	Optical investigations and photoactive solar energy applications of new synthesized Schiff base liquid crystal derivatives
title_full	Optical investigations and photoactive solar energy applications of new synthesized Schiff base liquid crystal derivatives
title_fullStr	Optical investigations and photoactive solar energy applications of new synthesized Schiff base liquid crystal derivatives
title_full_unstemmed	Optical investigations and photoactive solar energy applications of new synthesized Schiff base liquid crystal derivatives
title_sort	optical investigations and photoactive solar energy applications of new synthesized schiff base liquid crystal derivatives
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/7e93e94bb83c4822961a0663f33a5f72
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Optical investigations and photoactive solar energy applications of new synthesized Schiff base liquid crystal derivatives

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