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Second- and third-order nonlinear optical properties of bis-chalcone derivatives

Paper ID Volume ID Publish Year Pages File Format Full-Text
26937 43988 2014 5 PDF Available
Title
Second- and third-order nonlinear optical properties of bis-chalcone derivatives
Abstract

•2,5-Bis(4-methoxy-benzylidene)-cyclopentanone (CP-POME) showed very high second harmonic generation (SHG) efficiency (5.3 times than that of urea).•All the compounds showed good third order NLO property. 2,5-Bis(cinnamylidene)-cyclopentanone (CP-CAL) exhibited good NLA activity with β coefficient of 1 × 10−10 m/W.•The NLA observed in the present study is of two photon absorption (2PA) and optical limiting type.•The compounds can have potential applications in sensor and eye protection.

Bis-chalcone derivatives: 2,5-bis(benzylidene)-cyclopentanone (CP-DBA), 2,5-bis(4-methoxy-benzylidene)-cyclopentanone (CP-POME), 2,5-bis(4-isopropyl-benzylidene)-cyclopentanone (CP-ISO) and 2,5-bis(cinnamylidene)-cyclopentanone (CP-CAL) are synthesized by Claisen–Schmidt reaction and characterized using, FT-IR, 1H NMR, 13C NMR, and mass spectroscopic techniques. The second- and third-order nonlinear optical properties of these samples are studied using second harmonic generation and nanosecond open-aperture Z-scan methods. CP-POME has shown a very high second harmonic generation (SHG) efficiency (5.3 times that of urea). These molecules reveal a strong third-order nonlinear absorption (NLA) that is of optical limiting type, due to their peculiar D–π–A–π–D structure that leads to high polarization of the delocalized electron cloud. CP-CAL exhibits highest NLA activity with a β coefficient of 1 × 10−10 m/W. Through numerical simulations, the mechanism of NLA is found to be a two-photon absorption process in the case of all the samples.

Keywords
D–π–A–π–D; SHG; Z-scan; Two photon absorption; Optical limiting
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Second- and third-order nonlinear optical properties of bis-chalcone derivatives
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 290, 15 September 2014, Pages 38–42
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
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Any Questions? feel free to contact us