Second-order nonlinear optical chromophore with D-pai-A structure and synthetic method and use thereof

Abstract

The invention relates to the field of organic second-order nonlinear optical materials, in particular to a second-order nonlinear optical chromophore with a D-pai-A structure of a high-performance aminobenzene electron donor, a thiophene pai electron bridge and a tricyano-pyrrolidine electron acceptor and a synthetic method and a use thereof. The thiophene pai electron bridge synthesized in the synthetic method of the invention can effectively improve the conjugate transmission capacity of electrons, reduce the interaction force among molecules and improve the first-order molecular hyperpolarizability (beta) of the molecules of the chromophore. The second-order nonlinear optical chromophore with the high-performance D-pai-A structure has important application prospects in the field of signal modulation as the second-order nonlinear optical material.

Description

Technical field The invention relates to the field of organic second-order nonlinear optical materials, in particular to a class of high-performance aminobenzene-containing electron donors, thiophene π electron bridges and tricyanopyrroline (TCP) electron acceptors with D-π -A structured second-order nonlinear optical chromophore and its synthesis method and application. Background technique Nonlinear optical materials have been attracting people's research interest in recent decades because of their huge application prospects in practical fields such as optical communications, optoelectronics, and optical information processing. The currently practical second-order nonlinear optical materials are mainly inorganic materials. However, organic nonlinear optical materials have unmatched advantages over inorganic materials, such as ultra-fast response speed (subpicoseconds or even picoseconds), low dielectric constant, high optical damage threshold (GW / cm2 magnitude), good process...

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Problems solved by technology

However, these chromophores have low solubility in the polymer base due to the large intermolecular interaction force in the polymer, the polarization efficiency is not high, and the electro-optic coefficient is relatively small.

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