Elucidating the Structure-Nonlinear Optical Property Relationship of Ethynyl Extended Benzanthrone Chromophores.

Divya Jattu Gouda, B Siddlingeshwar, H M Suresh Kumar, Shivaraj R Maidur, S R Manohara, Armands Maleckis, Elena M Kirilova

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Article in Molecules (Basel, Switzerland), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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7 authors.

Divya Jattu GoudaDepartment of Physics, M.S. Ramaiah Institute of Technology (Autonomous Institute Affiliated to VTU), Bengaluru 560054, India.

B SiddlingeshwarDepartment of Physics, M.S. Ramaiah Institute of Technology (Autonomous Institute Affiliated to VTU), Bengaluru 560054, India.ORCID 0000-0001-6681-6203

H M Suresh KumarDepartment of Physics, Siddaganga Institute of Technology (Autonomous Institute Affiliated to VTU), Tumakuru 572103, India.

Shivaraj R MaidurDepartment of Physics, School of Computational & Physical Sciences, Kristu Jayanti (Deemed to be University), Bengaluru 560077, India.ORCID 0000-0002-5334-8073

S R ManoharaDepartment of Physics, Siddaganga Institute of Technology (Autonomous Institute Affiliated to VTU), Tumakuru 572103, India.ORCID 0000-0003-3093-5416

Armands MaleckisInstitute of Life Sciences and Technology, Daugavpils University, Vienibas 13, LV-5401 Daugavpils, Latvia.ORCID 0000-0002-6790-6320

Elena M KirilovaInstitute of Life Sciences and Technology, Daugavpils University, Vienibas 13, LV-5401 Daugavpils, Latvia.ORCID 0000-0002-9577-5612

Funding

Latvian Council of Science lzp-2022/1-0436

6 · The paper itself

Abstract

Three ethynyl-extended benzanthrone derivatives with benzonitrile (Dye A), thiophene (Dye B), and methyl propiolate (Dye C) as substituents were synthesized and investigated to illustrate structure-property relationships governing their nonlinear optical (NLO) behavior. The third-order nonlinear absorption and refractive index of three dyes were studied using open- and closed-aperture z-scan measurements under 532 nm continuous-wave laser excitation. All dyes exhibited reverse saturable absorption dominated by two-photon absorption, with Dye A showing the highest nonlinear absorption coefficient (βeff = 2.3 × 10

Indexed as

benzanthrone dyesethynyl derivativesfluorescencenonlinear optics

Identifiers

PMID42123832

DOI10.3390/molecules31091467

PMCPMC13164745

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