13767-71-0Relevant articles and documents
Large-Size crystal based on rare earth-free Cu(I) hybrid trigger yellow light with high emissive quantum yields
Zhang, Yuan-Lan,Wang, Gui-Bin
, p. 241 - 245 (2019)
With the flourishing development of emitting materials, tremendous technological progress has been accomplished. However, they still face great challenges in convenient economical environmental-friendly large-scale commercial production. Herein we designed this hybrid lead/rare earth-free crystals with the large size of 2.7*3.0 cm, an emerging class of high-efficiency luminescent material, (PYE)[Cu2I3] (1), which emits intense photoluminescence with a high emissive quantum yields of 32.11%. In addition, the results demonstrate that it is possible to obtain regulatable fluorescence intensity by introducing free groups in material design through simple molecular design. The dielectric constant curve remains relatively smooth before melting point. Therefore, it will be an important exploration and effective way for new material design to achieve artificial intelligence luminescent molecules, in this way, the personal customized application can be realized in display and sensing.
Photoelectron imaging and spectroscopy of MI2- (M = Cs, Cu, Au): Evolution from ionic to covalent bonding
Wang, Yi-Lei,Wang, Xue-Bin,Xing, Xiao-Peng,Wei, Fan,Li, Jun,Wang, Lai-Sheng
, p. 11244 - 11251 (2010)
We report a combined experimental and theoretical investigation of MI 2- (M = Cs, Cu, Ag, Au) to explore the chemical bonding in the group IA and IB diiodide complexes. Both photoelectron imaging and low-temperature photoelectron spectroscopy are applied to MI2 - (M = Cs, Cu, Au), yielding vibrationally resolved spectra for CuI2- and AuI2- and accurate electron affinities, 4.52 ± 0.02, 4.256 ± 0.010, and 4.226 ± 0.010 eV for CsI2, CuI2, and AuI2, respectively. Spin-orbit coupling is found to be important in all the diiodide complexes and ab initio calculations including spin-orbit effects allow quantitative assignments of the observed photoelectron spectra. A variety of chemical bonding analyses (charge population, bond order, and electron localization functions) have been carried out, revealing a gradual transition from the expected ionic behavior in CsI2- to relatively strong covalent bonding in AuI2-. Both relativistic effects and electron correlation are shown to enhance the covalency in the gold diiodide complex.
Ionic Solvation Part 4. Copper(I) Solvation. Disproportionation and Halide-complex Formation in Propylene Carbonate
Lewandowski, Andrzej
, p. 4013 - 4022 (1988)
Potentiometric measurements have been obtained in order to examine the thermodynamic stability of copper(I) species and to study halide-complex formation in propylene carbonate in a 0.1 mol dm-3 tetraethylammonium perchlorate medium at 25 deg C.A value of 10-3.44 dm3 mol-1 has een found for the concentration constant, KD, of the disproportionation reaction:.In the halide system two mononuclear complexes CuX and CuX2(1-) are formed.The solubility products of CuX, pKsp, are 16.0, 15.8 and 17.9 and overall formation constants of CuX2(1-), logβ2 are 19.9, 17.9 and 17.2 for X=Cl(1-), Br(1-) and I(1-), respectively.The results are discussed in terms of solvation of the various complexes.
Studies on the Preparation of Cuprous Oxide. VIII. A Spectrophotometric Study of Halogenocopper(I) Complexes in Aqueous 5 M Na(ClO4) Solutions
Sugasaka, Kazuhiko,Fujii, Ayako
, p. 2514 - 2519 (2007/10/02)
The complex formation of copper(I) with bromide and iodide ions in aqueous 5M (1M = 1 mol dm-3) Na(ClO4) solutions was studied spectrophotometrically over a pH range from acidic to alkaline.Over the concentration range of 0.05-5 M bromide ions in acidic solutions, the CuBr2- and CuBr32- complexes were found.On the other hand, in the iodide system the CuI2-, CuI32- complexes and a higher complex were found under the same experimental conditions, although the composition and the formation constant of the last complex could not be determined in this study.The equilibrium constants for the reactions, CuX2- + X- = CuX32-, were 13 and 1.6 for the bromide and iodide complexes respectively.A hydrolyzed species of copper(I), Cu(OH)2-, was found in an alkaline solution of the two systems.The formation constants, β-22 = ->->2/->->2, were evaluated as follows: β-22 = (10.0 +/- 0.7) * 107 (-> less than 2 M), (2.6 +/- 0.7) * 107 (-> = 3M), (1.7 +/- 0.7) * 107 (-> = 4M) in the bromide solutions, (4.0 +/- 0.4) * 103 (-> less than 2M), (2.5 +/- 0.4) * 103 (-> = 3M), (2.2 +/- 0.4) * 103 (-> = 4M) in the iodide solutions.
