Open AccessDesign, Synthesis and Study of Non-Linear Optical Properties of Phenyl Bridged Diphenylamine-s-triazine Based Donor-Acceptor Triads Containing Different π-Acceptor Groups
Author(s) -
C.S. Suma,
N.P. Dhanya,
Seena Sebastian
Publication year - 2021
Publication title -
asian journal of chemistry/asian journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.145
H-Index - 34
eISSN - 0975-427X
pISSN - 0970-7077
DOI - 10.14233/ajchem.2021.23311
Subject(s) - chemistry , moiety , diphenylamine , acceptor , barbituric acid , triazine , rhodanine , electron donor , photochemistry , stereochemistry , polymer chemistry , organic chemistry , physics , condensed matter physics , catalysis
Novel donor-acceptor triads of starburst D-A-A type incorporating electron deficient triazine moietyas a non-conjugating π-spacer/acceptor with two acceptor/anchoring arms comprising of cyanoaceticacid (DTP-CYA), rhodanine-3-acetic acid (DTP-RHA), barbituric acid (DTP-BA) or thiobarbituricacid (DTP-TBA) linked to triazine core via a phenyl bridge have been synthesized. Diphenylamine isused as the donor moiety and the role of the π-spacer on the absorption spectra and other electronicproperties were studied. All the compounds were tested for their non-linear optical properties anddetermined the non-linear absorption coefficient (β) and non-linear refractive index (n2) in DMFsolutions. Improved non-linear optical properties were obtained when compared to the compoundswith triazine moiety as a non-conjugating π-spacer/acceptor with rhodanine-3-acetic acid (DTOP-RHA),barbituric acid (DTOP-BA) or thiobarbituric acid (DTOP-TBA) as anchoring/acceptor groups. DTOPseries compounds are in the geometry of the molecule where the phenyl π-bridge and the triazine unitare coplanar with the arylidne acceptor unit. The enhanced performance may be due to the structuralvariants, which expected to improve through bond coupling between the donor and the terminal acceptorparts of the molecules and all compounds show asymmetry in the electron density due to the basicdonor-acceptor nature of the structure.