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Issue 27, 2016
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Nonlinear absorption in tetrathia[22]porphyrin(2.1.2.1)s: visualizing strong reverse saturable absorption at non-resonant excitation

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Abstract

The nonlinear optical absorption properties of three meso-substituted aromatic, neutral tetrathia[22]porphyrin(2.1.2.1) compounds were investigated using an open aperture Z-scan technique at 527 nm with a pulse width of 100 ns in dichloromethane. The responses obtained were accounted for by invoking reverse saturable absorption arising due to strong excited state absorption. Both ground and excited state absorption cross-sections are reported, which follow the same trend as the respective structural parameters.

Graphical abstract: Nonlinear absorption in tetrathia[22]porphyrin(2.1.2.1)s: visualizing strong reverse saturable absorption at non-resonant excitation

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Article information


Submitted
31 Oct 2015
Accepted
21 Feb 2016
First published
22 Feb 2016

RSC Adv., 2016,6, 22659-22663
Article type
Communication
Author version available

Nonlinear absorption in tetrathia[22]porphyrin(2.1.2.1)s: visualizing strong reverse saturable absorption at non-resonant excitation

K. Singh, S. Arora, K. Makhal, P. Kaur and D. Goswami, RSC Adv., 2016, 6, 22659
DOI: 10.1039/C5RA22861A

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