showing 4 related works from this author
Dendronized azochromophores with aromatic and perfluoroaromatic fragments: Synthesis and properties demonstrating Ar ArF interactions
2019
Abstract Syntheses of four new dendronized azochromophores were performed from 2-(2-amino-5-nitrophenoxy)ethanol, 2-[methyl(phenyl)amino]ethanol, 3,5-bis(benzyloxy)benzoic acid and 3,5-bis[(pentafluorophenyl)methoxy]benzoic acid using azo coupling reaction and ester formation reaction in presence of N,Nʹ-dicyclohexylcarbodiimide and 4-(dimethylamino)pyridine. Arene-perfluoroarene (Ar ArF) interactions are demonstrated in single crystal structure of dendronized azochromophore between pentafluorophenyl fragment and acceptor part of the azochromophore. The effect of Ar ArF interactions becomes apparent in thermal and nonlinear optical properties of the chromophores. Glass transition temperatur…
Nonlinear optical properties of low molecular organic glasses formed by triphenyl modified chromophores
2012
The series of organic molecular glasses have been studied as possible candidates for nonlinear optical (NLO) applications. Amorphous phase formation of investigated materials is ensured by the presence of bulky triphenyl substituents in molecular structure of NLO chromophores. Linear optical properties as well as NLO coefficients and thermal stability of NLO activity for the 13 molecular materials in glassy thin solid films have been determined. For the benzylidene-1,3-indandione chromophore containing compound the highest d33 value equal to 280 pm/V was measured under the 1064 nm excitation. Among the investigated compounds uppermost achieved thermal sustainability of NLO response was 108 …
Structure-dependent tuning of electro-optic and thermoplastic properties in triphenyl groups containing molecular glasses
2015
Abstract The series of seven molecular compounds composed of D–π–A chromophores and triphenylmethyl auxiliary groups were characterized by UV–Vis spectroscopy, differential scanning calorimetry and quantum chemical calculations. Nonlinear optical (NLO) properties of compounds were determined by second harmonic generation measurements in corona poled thin glassy films. The results show that triphenylmethyl auxiliary groups are effective at shielding undesirable dipole interactions in solid phase thus increasing NLO efficiency of materials. Thermal stability up to 108 °C was achieved for a polar order in poled samples.
CCDC 1520858: Experimental Crystal Structure Determination
2018
Related Article: Lauma Laipniece, Valdis Kampars, Sergey Belyakov, Andrejs Tokmakovs, Edgars Nitiss, Martins Rutkis|2019|Dyes Pigm.|162|394|doi:10.1016/j.dyepig.2018.10.035