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Designing Excess Electron Compounds by Substituting Alkali Metals to a Small and Versatile Tetracyclic Framework: A Theoretical Perspective

[Image: see text] Organic compound-based nonlinear optical (NLO) materials have sparked a lot of attention due to their multitude of applications and shorter optical response times than those of inorganic NLO materials. In the present investigation, we designed exo-exo-tetracyclo[6.2.1.1(3,6).0(2,7)...

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Autores principales: Yadav, Santosh Kumar, Bhunia, Snehasis, Kumar, Rajneesh, Seth, Ritu, Singh, Ajeet
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2023
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9979228/
https://www.ncbi.nlm.nih.gov/pubmed/36872966
http://dx.doi.org/10.1021/acsomega.2c07743
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author Yadav, Santosh Kumar
Bhunia, Snehasis
Kumar, Rajneesh
Seth, Ritu
Singh, Ajeet
author_facet Yadav, Santosh Kumar
Bhunia, Snehasis
Kumar, Rajneesh
Seth, Ritu
Singh, Ajeet
author_sort Yadav, Santosh Kumar
collection PubMed
description [Image: see text] Organic compound-based nonlinear optical (NLO) materials have sparked a lot of attention due to their multitude of applications and shorter optical response times than those of inorganic NLO materials. In the present investigation, we designed exo-exo-tetracyclo[6.2.1.1(3,6).0(2,7)]dodecane (TCD) derivatives, which were obtained by replacing H atoms of methylene bridge carbon with alkali metals (Li, Na, and K). It was observed that upon the substitution of alkali metals at bridging CH(2) carbon, absorption within the visible region occurred. Moving from 1 to 7 derivatives, the maximum absorption wavelength of the complexes exhibited a red shift. The designed molecules showed a high degree of intramolecular charge transfer (ICT) and excess electrons in nature, which were responsible for rapid optical response time and significant large molecular (hyper)polarizability. Calculated trends also inferred that the crucial transition energy decreased in order that also played a key role in the higher nonlinear optical response. Furthermore, to examine the effect of the structure/property relationship on the nonlinear optical properties of these investigated compounds (1–7), we calculated the density of state (DOS), transition density matrix (TDM), and frontier molecular orbitals (FMOs). The largest first static hyperpolarizability (β(tot)) of TCD derivative 7 was 72059 au, which was 43 times greater than that of the prototype p-nitroaniline (β(tot) = 1675 au).
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spelling pubmed-99792282023-03-03 Designing Excess Electron Compounds by Substituting Alkali Metals to a Small and Versatile Tetracyclic Framework: A Theoretical Perspective Yadav, Santosh Kumar Bhunia, Snehasis Kumar, Rajneesh Seth, Ritu Singh, Ajeet ACS Omega [Image: see text] Organic compound-based nonlinear optical (NLO) materials have sparked a lot of attention due to their multitude of applications and shorter optical response times than those of inorganic NLO materials. In the present investigation, we designed exo-exo-tetracyclo[6.2.1.1(3,6).0(2,7)]dodecane (TCD) derivatives, which were obtained by replacing H atoms of methylene bridge carbon with alkali metals (Li, Na, and K). It was observed that upon the substitution of alkali metals at bridging CH(2) carbon, absorption within the visible region occurred. Moving from 1 to 7 derivatives, the maximum absorption wavelength of the complexes exhibited a red shift. The designed molecules showed a high degree of intramolecular charge transfer (ICT) and excess electrons in nature, which were responsible for rapid optical response time and significant large molecular (hyper)polarizability. Calculated trends also inferred that the crucial transition energy decreased in order that also played a key role in the higher nonlinear optical response. Furthermore, to examine the effect of the structure/property relationship on the nonlinear optical properties of these investigated compounds (1–7), we calculated the density of state (DOS), transition density matrix (TDM), and frontier molecular orbitals (FMOs). The largest first static hyperpolarizability (β(tot)) of TCD derivative 7 was 72059 au, which was 43 times greater than that of the prototype p-nitroaniline (β(tot) = 1675 au). American Chemical Society 2023-02-16 /pmc/articles/PMC9979228/ /pubmed/36872966 http://dx.doi.org/10.1021/acsomega.2c07743 Text en © 2023 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by-nc-nd/4.0/Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works (https://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Yadav, Santosh Kumar
Bhunia, Snehasis
Kumar, Rajneesh
Seth, Ritu
Singh, Ajeet
Designing Excess Electron Compounds by Substituting Alkali Metals to a Small and Versatile Tetracyclic Framework: A Theoretical Perspective
title Designing Excess Electron Compounds by Substituting Alkali Metals to a Small and Versatile Tetracyclic Framework: A Theoretical Perspective
title_full Designing Excess Electron Compounds by Substituting Alkali Metals to a Small and Versatile Tetracyclic Framework: A Theoretical Perspective
title_fullStr Designing Excess Electron Compounds by Substituting Alkali Metals to a Small and Versatile Tetracyclic Framework: A Theoretical Perspective
title_full_unstemmed Designing Excess Electron Compounds by Substituting Alkali Metals to a Small and Versatile Tetracyclic Framework: A Theoretical Perspective
title_short Designing Excess Electron Compounds by Substituting Alkali Metals to a Small and Versatile Tetracyclic Framework: A Theoretical Perspective
title_sort designing excess electron compounds by substituting alkali metals to a small and versatile tetracyclic framework: a theoretical perspective
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9979228/
https://www.ncbi.nlm.nih.gov/pubmed/36872966
http://dx.doi.org/10.1021/acsomega.2c07743
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