Dual visible/NIR emission from organometallic iridium(III) complexes
作者:Kaitlin A. Phillips、Thomas M. Stonelake、Peter N. Horton、Simon J. Coles、Andrew J. Hallett、Sean P. O'Kell、Joseph M. Beames、Simon J.A. Pope
DOI:10.1016/j.jorganchem.2019.04.019
日期:2019.8
chromophore. Iridium(III) complexes of the form [Ir(L)2(bipy)]PF6 were synthesised from L1-L4 in two steps. The electronic properties of the complexes reveal absorption in the UV-vis. region with spin forbidden metal-to-ligand chargetransfer (MLCT) transitions possibly contributing at longer wavelengths to ca. 600 nm. Steady state luminescence (aerated, room temperature) on solutions of the complexes showed
[EN] BENZO[G]QUINOXALINE DERIVATIVES AS EFFECTIVE COMPOUNDS AGAINST INFECTIOUS DISEASES<br/>[FR] DERIVES DE LA BENZO[G]QUINOXALINE COMPOSES EFFICACES CONTRE LES MALADIES INFECTIEUSES
申请人:AXXIMA PHARMACEUTICALS AG
公开号:WO2002094796A2
公开(公告)日:2002-11-28
The present invention relates to benzo[g]quinoxaline derivatives of the general formula (I), processes for manufacturing said benzo[g]quinoxaline derivatives, the use of the benzo[g]quinoxaline derivatives as pharmaceutically active agents, especially for the prophylaxis and/or treatment of infectious diseases and opportunistic infections, diabetes, cancer, inflammation, as well as compositions containing at least one benzo[g]quinoxaline derivative and/or pharmaceutically acceptable salt thereof. Further, the present invention is directed to methods for preventing and/or treating of infectious diseases, diabetes, cancer, and inflammation using the inventive benzo[g]quinoxaline derivatives.
Synthesis, Photophysical, Electrochemical and Thermal Studies of Triarylamines based on benzo[g]quinoxalines
作者:AZAM M SHAIKH、BHARAT K SHARMA、RAJESH M KAMBLE
DOI:10.1007/s12039-015-0904-0
日期:2015.9
A series of novel dipolar and nonplanar compounds featuring electron acceptor benzo[g]quinoxaline and various electron donor triarylamine units have been synthesized in good yields and fully characterized. The photophysical, electrochemical and thermal properties of the synthesized compounds are described. The photoluminescence properties of the synthesized molecules are influenced by peripheral amines. The derivatives have high Stokes shifts, low band gap and the Commission Internationale de l’Eclairage (CIE) coordinates are positioned in the green–yellow region of the chromaticity diagram. The ionization potentials and electron affinity were found to be in the range of 5.11–5.60 eV and 2.77–2.93 eV and are comparable to the commonly used hole transporters. Thermal studies also reveal that these synthesized molecules have good thermal stability with 5% and 10% weight loss temperature ranging from 200 to 355°C and 268 to 442°C, respectively.
Blue-orange emitting carbazole based donor-acceptor derivatives: Synthesis and studies of modulating acceptor unit on opto-electrochemical and theoretical properties
作者:Pooja S. Singh、Purav M. Badani、Rajesh M. Kamble
DOI:10.1016/j.jphotochem.2021.113457
日期:2021.10
In order to demonstrate an effect of varying acceptor unit on optoelectronic properties of Donor–Acceptor (D–A) assembly, we herein designed and synthesized C–N coupled, carbazole based dyes 1–8 by employing Buchwald–Hartwig coupling amination reaction and fully characterized by spectroscopic methods. Presence of intramolecular charge transfer (ICT) transitions (λmax = 403–467 nm) in absorption spectra