57103-07-8Relevant academic research and scientific papers
Synthesis, structures and charge?transfer complexations of 1,n-di-[3,6-di-(9-carbazolyl)-9-carbazolyl]alkanes with tetracyanoethylene and tetranitromethane
?zgün, Selin,Asker, Erol,Zeybek, Orhan
, p. 31 - 42 (2017)
Synthesis and charge?transfer (CT) complexations of amorphous 3,6-di-(9-carbazolyl)-9-ethylcarbazole, 3,6-di-(9-carbazolyl)-9-hexylcarbazole and a series of 1,n-di-[3,6-di-(9-carbazolyl)-9-carbazolyl]alkanes (n?=?1–5) with electron acceptors tetracyanoethylene and tetranitromethane are reported. The molar extinction coefficients (ε), equilibrium constants (Keq), enthalpies (ΔH) and entropies (ΔS) of complexations have been determined. The low Keq values (1.83–3.82?M?1 for carbazole?TCNE and 0.28–0.45?M?1 for carbazole?TNM complexes) show weak donor?acceptor associations. The negative values of ΔH determined to be between??2.09?±?0.08 and??3.10?±?0.21?kcal?mol?1 for carbazole?TCNE complexes and??0.91?±?0.08 and??3.31?±?0.28?kcal?mol?1 for carbazole?TNM complexes indicate that complexations are driven by the exothermic enthalpies. Computational analysis using semi?empirical and DFT methods were applied to clarify the structures of the synthesized molecules and the nature of their CT complexations.
Synthesis, crystal structures and photoluminescence of mercury(II) complexes with two homologous novel functional rigid ligands
Zhou, Hong-Ping,Tian, Yu-Peng,Wu, Jie-Ying,Zhang, Ju-Zhou,Li, Dong-Mei,Zhu, Yong-Min,Hu, Zhang-Jun,Tao, Xu-Tang,Jiang, Min-Hua,Xie, Yi
, p. 4976 - 4984 (2005)
Two novel functional rigid ligands, 2,2′- and 4,4′-bipyridyl- based "building blocks", 9-ethyl-3,6-bis[2-(4-pyridyl)ethenyl] carbazole (L1) and 9-ethyl-3,6-bis[2-(2-pyridyl)ethenyl]-carbazole (L2), were synthesized. Treatment of L1,2 as "building blocks" with Hg(SCN)2 or HgI2 afforded helixes, macrocycles, and chains, which can be further self-assembled by a π-π stacking interaction, hydrogen bond, and interatomic force in the solid state to form two-dimensional networks. In complexes 1-4, HgII centers all adopt four-coordination modes in different coordination environments, but they present different architectures with slightly adjusted structures of the ligands and counteranions, indicating that the nature of the ligand and anion plays an important role in the coordination networks. The luminescent properties of compounds 1-4 have been studied. Wiley-VCH Verlag GmbH & Co. KGaA, 2005.
3,6-Diaryl substituted 9-alkylcarbazoles as hole transporting materials for various organic light emitting devices
Krucaite,Tavgeniene,Grazulevicius,Wang,Hsieh,Jou,Garsva,Grigalevicius
, p. 1 - 6 (2014/04/03)
Phenyl, naphthyl or biphenyl disubstituted 9-alkylcarbazoles were synthesized by a multi-step synthetic rout. The materials were examined by various techniques including thermogravimetry, differential scanning calorimetry, and electron photoemission spect
