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Carbon based Y-type molecules for application in nonlinear optics

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Abstract

Inducing new nonlinear optical (NLO) properties while maintaining the thermal stability of carbon based nanomaterials broadens the application of carbon nanomaterials in opto-electronics. In the present work, polar azulene defects are introduced in Y-type carbon based molecules to induce polarity thus enhancing the second order NLO properties (for example, the static first hyperpolarizability of Y-type carbon based molecules with azulene defects reaches 4.18 × 10−30 esu per heavy atom while that of p-nitroaniline is 2.97 × 10−30 esu per heavy atom). The addition of an electron acceptor at the heptagon end modifies the π electron distribution of Y-type carbon based molecules and significantly enhances the static first hyperpolarizability from 1.73 × 10−30 esu per heavy atom to 8.87 × 10−30 esu per heavy atom, much larger than that of similarly synthesized NLO compounds. The cause of such enhancement by introduction of electron acceptors has been scrutinized.

Graphical abstract: Carbon based Y-type molecules for application in nonlinear optics

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Article information


Submitted
04 Nov 2019
Accepted
11 Dec 2019
First published
12 Dec 2019

J. Mater. Chem. C, 2020, Advance Article
Article type
Paper

Carbon based Y-type molecules for application in nonlinear optics

C. Yang, Y. He, X. Zheng, J. Chen, L. Yang, W. Li and W. Q. Tian, J. Mater. Chem. C, 2020, Advance Article , DOI: 10.1039/C9TC06023E

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