Synthesis and Nonlinear Optical Behavior of Thermally Stable Chromophores Based on 9,9-Dimethyl-9<i>H</i>-fluoren-2-amine: Improving Intrinsic Hyperpolarizability through Modulation of “Push–Pull”
Shivani Shivani, Akriti Mishra, Paramjit Kaur, Kamaljit Singh
Abstract
) values of the new series measured using hyper-Rayleigh scattering exceeded the apparent limit set by the latter set of fluorene-based chromophores. The experimental results are analyzed and interpreted in the context of linear optical properties, single-crystal X-ray analysis, electrochemistry, etc. and corroborated by theoretical studies. We find that modulation of the "push-pull" of the conjugation pathway in these donor-acceptor chromophores compares favourably with the corresponding changes in the optical gaps, transition dipole moments, and dipole moment difference between the ground and excited states.
Topics & Concepts
HyperpolarizabilityChromophoreChemistryFluoreneExcited stateAcceptorPhotochemistryDipoleSolvatochromismAmine gas treatingMaterials sciencePolarizabilityAtomic physicsPhysicsOrganic chemistryMoleculePolymerCondensed matter physicsNonlinear Optical Materials ResearchPhotochromic and Fluorescence ChemistryLiquid Crystal Research Advancements