Structure–Property Relationships and Nonlinear Optical Effects in Donor‐Substituted Dicyanopyrazine‐Derived Push–Pull Chromophores with Enlarged and Varied π‐Linkers

Abstract

Keywords:Charge transfer / Donor-acceptor systems / Nonlinear optics / Electrochemistry / PyrazineThirteen new, stable, push-pull systems featuring dimethylamino and pyrazine-2,3-dicarbonitrile moieties as the donor and acceptor, respectively, and systematically extended and varied π-linkers were prepared and investigated. Evaluation of the measured UV/Vis spectra, electrochemical data (cyclic voltammetry, rotating disc voltammetry, and polarography), X-ray data, and experimentally determined and calculated hyperpolarizability values enabled structure-

DNA-hexadecyltrimethyl ammonium chloride complex with enhanced thermostability as promising electronic and optoelectronic material

“…The obtained enhancement of the thermo stability may do these materials comparable with other organic chromohores [36,37] as well as inorganic nanocomposites [38].…”

Tetrapyrazinoporphyrazines and their metal derivatives. Part I: Synthesis and basic structural information

“…3). The pyrazine ring has a noticeable planar distortion and its dihedral angles with 4-bromophenyl rings in Pyz28a are 21.6 and 39.7º [129] and with 4-dimethylaminophenyl rings in Pyz33 are 28.9 and 30.4º [114]. It is noteworthy, that 2-pyridyl rings in the dinitrile Pyz42 have a similar non-coplanar arrangement forming with pyrazine dihedral angles 36-43° (see Fig.…”

Design and preparation of novel Diels–Alder crosslinking polymer and its application in NLO materials

“…Finally it should be added that the background surrounding the organic chromophore may also differently influence on the output susceptibilities [34][35][36].…”