Fine-tuning polyoxometalate non-linear optical chromophores: a molecular electronic “Goldilocks” effect

Ahmed Al-Yasari; Philip Spence; Hani El Moll; Nick Van Steerteghem; Peter N. Horton; Bruce S. Brunschwig; Koen Clays; John Fielden

doi:10.1039/C8DT01491D

Fine-tuning polyoxometalate non-linear optical chromophores: a molecular electronic “Goldilocks” effect†

Ahmed Al-Yasari,^ae Philip Spence,

^a Hani El Moll,^a Nick Van Steerteghem,^b Peter N. Horton,^c Bruce S. Brunschwig,

^d Koen Clays^b and John Fielden

*^a

Author affiliations

* Corresponding authors

^a School of Chemistry, University of East Anglia, Norwich, UK
E-mail: John.Fielden@uea.ac.uk

^b Department of Chemistry, University of Leuven, Celestijnenlaan 200D, B-3001 Leuven, Belgium

^c UK National Crystallography Service, School of Chemistry, University of Southampton, SO17 1BJ, Southampton, UK

^d Beckman Institute, MC 139-74, California Institute of Technology, 1200 East California Blvd, Pasadena, CA 91125, USA

^e College of Pharmacy, University of Kerbala, Kerbala, Iraq

Abstract

A new aryl-imido polyoxometalate non-linear optical chromophore (POMophore) with a diphenylamino donor group attains the highest β_{zzz, 0} value (196 × 10⁻³⁰ esu by Hyper-Rayleigh Scattering, HRS), and best transparency/non-linearity trade off yet for such materials. Stark spectroscopic and DFT investigation of this compound, plus NMe₂ and carbazole analogues, show that its high performance results from a combination of strongly dipolar electronic transitions, and strong electronic communication across the π-system.

This article is part of the themed collection: New Talent: Europe

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DOI: https://doi.org/10.1039/C8DT01491D
Article type: Communication
Submitted: 16 Apr 2018
Accepted: 15 May 2018
First published: 27 Jun 2018
This article is Open Access

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Dalton Trans., 2018,47, 10415-10419

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Fine-tuning polyoxometalate non-linear optical chromophores: a molecular electronic “Goldilocks” effect

A. Al-Yasari, P. Spence, H. El Moll, N. Van Steerteghem, P. N. Horton, B. S. Brunschwig, K. Clays and J. Fielden, Dalton Trans., 2018, 47, 10415 DOI: 10.1039/C8DT01491D

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Dalton Transactions

Fine-tuning polyoxometalate non-linear optical chromophores: a molecular electronic “Goldilocks” effect†

Abstract

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Fine-tuning polyoxometalate non-linear optical chromophores: a molecular electronic “Goldilocks” effect

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