141045-26-3Relevant articles and documents
Cyclometalated ruthenium(ii) complexes with bis(benzimidazolyl)benzene for dye-sensitized solar cells
Shao, Jiang-Yang,Fu, Nianqing,Yang, Wen-Wen,Zhang, Chun-Yu,Zhong, Yu-Wu,Lin, Yuan,Yao, Jiannian
, p. 90001 - 90009 (2015)
A series of cyclometalated ruthenium complexes with bis(benzimidazolyl)benzene ligands were prepared and their applications in dye-sensitized solar cells are presented. The Ru(iii/ii) redox process of these complexes occurs at +0.71 V vs. Ag/AgCl. All complexes show broad absorptions extending into the near-infrared (NIR) region. The length of alkyl chains on the benzimidazole rings were found critical to the device performance. Sensitizer 4b with octyl substituents exhibits the best cell performance under the standard air mass 1.5 sunlight (η = 3.7%, Jsc = 9.85 mA cm-2, Voc = 555 mV, FF = 0.67). The device exhibits appreciable action in the NIR region between 700 and 850 nm.
Highly efficient anion transport mediated by 1,3-bis(benzimidazol-2-yl)benzene derivatives bearing electron-withdrawing substituents
Peng, Chen-Chen,Zhang, Meng-Jia,Sun, Xiao-Xiao,Cai, Xiong-Jie,Chen, Yun,Chen, Wen-Hua
supporting information, p. 8232 - 8236 (2016/09/09)
1,3-Bis(benzimidazol-2-yl)benzene exhibits potent anionophoric activity through a process of anion exchange with a minor level of proton/anion symport. Modification of 1,3-bis(benzimidazol-2-yl)benzene with strong electron-withdrawing substituents, such as trifluoromethyl and nitro groups, leads to up to 789-fold increase in the activity. The benzimidazolyl-NH fragments, the relative position and the number of the benzimidazolyl groups on the central phenyl scaffold play an essential role in the transport.
Tuning of redox potentials by introducing a cyclometalated bond to bis-tridentate ruthenium(II) complexes bearing bis(N -methylbenzimidazolyl) benzene or -pyridine ligands
Yang, Wen-Wen,Zhong, Yu-Wu,Yoshikawa, Shinpei,Shao, Jiang-Yang,Masaoka, Shigeyuki,Sakai, Ken,Yao, Jiannian,Haga, Masa-Aki
experimental part, p. 890 - 899 (2012/03/22)
A series of asymmetrical bis-tridentate cyclometalated complexes including [Ru(Mebib)(Mebip)]+, [Ru(Mebip)(dpb)]+, [Ru(Mebip)(Medpb)]+, and [Ru(Mebib)(tpy)]+ and two bis-tridentate noncyclometalated complexes [Ru(Mebip)2]2+ and [Ru(Mebip)(tpy)]2+ were prepared and characterized, where Mebib is bis(N-methylbenzimidazolyl)benzene, Mebip is bis(N-methylbenzimidazolyl) pyridine, dpb is 1,3-di-2-pyridylbenzene, Medpb is 4,6-dimethyl-1,3-di-2- pyridylbenzene, and tpy is 2,2′:6′,2″-terpyridine. The solid-state structure of [Ru(Mebip)(Medpb)]+ is studied by X-ray crystallographic analysis. The electrochemical and spectroscopic properties of these ruthenium complexes were studied and compared with those of known complexes [Ru(tpy)(dpb)]+ and [Ru(tpy)2]2+. The change of the supporting ligands and coordination environment allows progressive modulation of the metal-associated redox potentials (Ru II/III) from +0.26 to +1.32 V vs Ag/AgCl. The introduction of a ruthenium cyclometalated bond in these complexes results in a significant negative potential shift. The RuII/III potentials of these complexes were analyzed on the basis of Lever's electrochemical parameters (E L). Density functional theory (DFT) and time-dependent DFT calculations were carried out to elucidate the electronic structures and spectroscopic spectra of complexes with Mebib or Mebip ligands.
METAL COMPLEX COMPOUND AND ORGANIC ELECTROLUMINESCENT DEVICE USING SAME
-
Page/Page column 25, (2010/11/28)
A metal-complex compound which comprises a tridentate chelate ligand having a specified partial structure. An organic electroluminescence device which comprises at least one organic thin film layer sandwiched between a pair of electrode consisting of an anode and a cathode, wherein the organic thin film layer comprises the metal-complex compound, which emits light by applying an electric voltage between the pair of electrode. The present invention provides an organic EL device which emits blue light with high purity and of short wavelength with an enhanced efficiency of light emission.
Synthesis and spectral properties of 1,3-bis(2-benzimidazyl)benzene and its N-methylated derivative - Reactions with some acids and cobalt(II) salts
Gayathri, V.,Shashikala, N.,Gowda, N. M. Nanje,Reddy, G. K. N.
, p. 33 - 38 (2007/10/02)
Syntheses of 1,3-bis(2-benzimidazyl)benzene (bBzlH2Bz) and its N-methylated derivative (N-MebBzlBz) as well as their acid adducts and a few complexes of cobalt(II), CoX2L (X = halogen; L = N-heterocycle) and (ClO4)2, have been described.The heterocycles have been characterised by IR, electronic and NMR spectral data.The electronic and magnetic susceptibility data suggest tetrahedral geometry for CoX2L and (ClO4)2 (L = bBzlH2Bz or N-MebBzlBz), trigonal-bipyramidal for CoX2(N-MebBzlPy) X2 (X = I or ClO4) complexes.
Self-assembly of dinuclear helical and nonhelical complexes with copper(I)
Rüttimann, Stéphane,Piguet, Claude,Bernardinelli, Gérald,Bocquet, Bernard,Williams, Alan F.
, p. 4230 - 4237 (2007/10/02)
The ligand 1,3-bis(1-methylbenzimidazol-2-yl)benzene (mbzimbe, L3) reacts with copper(I) to give [Cu2(L3)2](ClO4)2. The crystal structure of this compound (Cu2C44H36N8Cl2O 8, a = 13.661 (1) ?, b = 19.829 (3) ?, c = 15.413 (2) ?, orthorhombic, Pbca, Z = 4) shows a dinuclear centrosymmetrical nonhelical structure in which each copper is linearly coordinated by a benzimidazole group of each ligand. The complex displays a weak intramolecular stacking interaction between the benzene groups. This complex can be considered as a stereoconformer of the double-helical complex [Cu2(L1)2](ClO4)2 (L1; 2,6-bis(1-methylbenzimidazol-2-yl)pyridine). Conductivity measurements and UV-visible spectra show that the dimeric structures are maintained in solution in polar aprotic solvents. 1H NMR measurements show that [Cu2(L1)2]2+ retains its helical structure in solution. Comparison of helical and nonhelical structures with those formed by Cu(I) with related ligands allows discussion of the factors favoring the formation of self-assembled dinuclear complexes.
