Design of Near-Infrared-Absorbing Unsymmetrical Polymethine Dyes with Large Quadratic Hyperpolarizabilities
Source abstract
Abstract
Fifteen\nheptamethine dyes in which a tricyanofuran acceptor is\nlinked to donors of different strengths were synthesized, and their\nabsorption, thermal, electrochemical, and second-order nonlinear optical\nproperties were investigated. While the variation of the peripheral\nbulky substituents allowed a decrease of the intermolecular interactions\nin the solid state, subtle engineering of the heterocyclic donor provided\ndyes with electronic structures that varied between dipolar and cyanine-like\n(i.e., with little bond length alternation and with ground and excited\nstates having similar dipole moment) and remarkably high quadratic\nhyperpolarizabilities (μβ1.9) of up to 115 000\n× 10–48 esu.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Nonlinear Optical Materials Research · Nonlinear Optical Materials Studies · Chalcogenide Semiconductor Thin Films
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Laboratoire de Chimie, Univ. Lyon, ENS de Lyon, CNRS UMR 5182, Université Claude Bernard Lyon 1, F69342 Lyon, France
School of Chemistry and Biochemistry and Center for Organic Photonics and Electronics, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
ENS Paris Saclay, CNRS UMR 8537, 61 avenue du Président Wilson, 94235 Cachan Cedex, France
Laboratoire des Multimatériaux et Interfaces, CNRS UMR 5615, Université Claude Bernard Lyon 1, Campus de La Doua, 69622 Villeurbanne Cedex, France
Funding
Air Force Office of Scientific Research
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