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Remarkable nonlinear optical response of pyrazine-fused trichalcogenasumanenes and their application for optical power limiting

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Abstract

The C3v-symmetric hetera buckybowl trichalcogenasumanenes have attracted recent interest due to their unique features in chemical and optoelectronic aspects. To gain a nonlinear optical (NLO) response, the electron-withdrawing unit pyrazine was introduced onto tricalcogenasumanenes to give the pyrazine-fused trithiasumanene (1) and triselenasumanene (2) as reported herein. Compounds 1 and 2 exhibit typical NLO properties which are verified using open-aperture Z-scan technology under a 532 nm nanosecond laser pulse. It is found that the NLO performance of these two molecules is much better than the state-of-the-art NLO material C60. The time-resolved transient absorption clearly verified that the NLO properties of 1 and 2 originate from the reverse saturable absorption (RSA) of the triplet excited-state. Owing to their remarkable NLO performance, 1 and 2 are further employed as optical power limiting (OPL) materials. Compounds 1 and 2 exhibit OPL behavior with a limiting threshold of 1.78 J cm−2 and 2.43 J cm−2, respectively; this performance is better than that of C60 (12.85 J cm−2). This work indicates that the sumanene derivatives are promising candidates for NLO and OPL materials.

Graphical abstract: Remarkable nonlinear optical response of pyrazine-fused trichalcogenasumanenes and their application for optical power limiting

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Publication details

The article was received on 21 Sep 2018, accepted on 15 Oct 2018 and first published on 17 Oct 2018


Article type: Paper
DOI: 10.1039/C8TC04778B
Citation: J. Mater. Chem. C, 2018, Advance Article
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    Remarkable nonlinear optical response of pyrazine-fused trichalcogenasumanenes and their application for optical power limiting

    J. Sun, Y. Sun, C. Yan, D. Lin, Z. Xie, S. Zhou, C. Yuan, H. Zhang and X. Shao, J. Mater. Chem. C, 2018, Advance Article , DOI: 10.1039/C8TC04778B

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