A Copper Cyanide Complex with Efficient Red Luminescence

2013 ◽  
Vol 66 (8) ◽  
pp. 989 ◽  
Author(s):  
Xi Liu ◽  
Yun-Zhi Yang ◽  
Chun-Hai Wang ◽  
Kun-Lin Huang
Keyword(s):  
Theoretical Calculations ◽  
Chain Structure ◽  
Helical Chain ◽  
Solvothermal Reaction ◽  
Luminescent Materials ◽  
Cyanide Complex ◽  
Copper Cyanide ◽  
Design And Synthesis ◽  
Red Luminescence ◽  
State Luminescence

Gaseous diffusion of diethyl ether into the solvothermal reaction mixture of copper cyanide (CuCN) with 2,2′-bipyridine (bipy) in anhydrous acetonitrile leads to a copper cyanide complex Cu(CN)(bipy) (1) with a special helical chain structure. Solid-state luminescence experiments show that complex 1 can emit efficient red luminescence, and its possible emission mechanism was investigated in detail based on theoretical calculations. The results may be helpful for the design and synthesis of more efficient luminescent materials.

A Novel Copper Cyanide Complex with a Layered Structure

2008 ◽  
Vol 61 (7) ◽  
pp. 481 ◽  
Author(s):  
Xi Liu ◽  
Guo-Cong Guo
Keyword(s):  
Layered Structure ◽  
Anhydrous Acetonitrile ◽  
Solvothermal Reaction ◽  
Cyanide Complex ◽  
Copper Cyanide ◽  
Violet Luminescence

The solvothermal reaction of copper(i) cyanide with 18-crown-6 (18C-6) in anhydrous acetonitrile and further diffusion with ether leads to a novel copper cyanide complex Cu(CN)(CH3CN)·0.5(18C-6) with a rare layered structure that exhibits complex violet luminescence originating from different layers.

Design and Synthesis of Novel Organic Luminescent Materials Based on Pyrazole Derivative

2019 ◽  
Vol 56 (4) ◽  
pp. 1464-1471 ◽  
Author(s):  
Yingxiang Duan ◽  
Qian Zhao ◽  
Yanhua Yang ◽  
Jinyang Zhang ◽  
Xuan Tao ◽  
...  
Keyword(s):  
Luminescent Materials ◽  
Pyrazole Derivative ◽  
Design And Synthesis

Design and synthesis ofN1,N8-diacetylspermidine analogues having a linker with desired functional groups

2019 ◽  
Vol 17 (4) ◽  
pp. 867-875
Author(s):  
Reiya Ohta ◽  
Akihiro Oguro ◽  
Kazuhiro Nishimura ◽  
Kenichi Murai ◽  
Hiromichi Fujioka ◽  
...  
Keyword(s):  
Functional Groups ◽  
Theoretical Calculations ◽  
Design And Synthesis

The synthesis of newN1,N8-diacetylspermidine (DiAcSpd) analogues having a linker with desired functional groups in the methylene skeleton, which have been designed by theoretical calculations, is described.

COMBINED STM AND RBS INVESTIGATION OF THE NUCLEATION AND GROWTH OF Au ON Ni(110): ALLOYING AND DEALLOYING

1996 ◽  
Vol 03 (05n06) ◽  
pp. 1713-1719 ◽  
Author(s):  
L. PLETH NIELSEN ◽  
I. STENSGAARD ◽  
F. BESENBACHER ◽  
E. LÆGSGAARD
Keyword(s):  
Effective Medium Theory ◽  
Theoretical Calculations ◽  
Chain Structure ◽  
Nucleation And Growth ◽  
Surface Alloy ◽  
Scanning Tunneling ◽  
Mutual Distance ◽  
Tunneling Microscopy ◽  
Medium Theory ◽  
Alloyed Surface

We have performed in-situ Scanning Tunneling Microscopy (STM) and Rutherford Backscattering Spectroscopy (RBS) investigations of the room-temperature (RT) growth of Au on Ni(110) . At low coverages, we observe the formation of a Au/Ni surface alloy, even though Au is immiscible with bulk Ni at RT. At a critical Au coverage of θ Au = 0.4 ML (monolayer), we observe a “dealloying” phase transition where 0.16 ML of Au is “popping” out of the alloyed surface layer and nucleates into [001]-directed dimer/trimer Au chains. Increasing the Au coverage further causes the nucleation and growth of more [001]-directed chains, i.e. their mutual distance in the [Formula: see text] direction decreases until the chain structure finally saturates in a p(5 × 3) structure at θ Au = 0.93 ML . The formation of a surface alloy at low coverage is supported by theoretical calculations within the Effective-Medium Theory (EMT), and an atomic model for the [001]-directed Au chains is developed from a detailed interplay between experiments and theoretical calculations.

Assembly of Three Cadmium(II) Complexes Based on Flexible α,ѡ-Bis(benzimidazolyl)alkane Ligands

2012 ◽  
Vol 67 (8) ◽  
pp. 791-798 ◽  
Author(s):  
Jian-Chen Geng ◽  
Cui-Huan Jiao ◽  
Jin-Ming Hao ◽  
Guang-Hua Cui
Keyword(s):  
Solid State ◽  
Chain Structure ◽  
Helical Chain ◽  
Supramolecular Network ◽  
Stacking Interactions ◽  
X Ray Diffraction ◽  
X Ray ◽  
Π Stacking ◽  
Elemental Analyses ◽  
Network Complex

Three flexible α,ѡ-bis(5,6-dimethylbenzimidazolyl)alkane ligands with different spacers were reacted with CdX2 (X = Cl, Br, I) hydrothermally, resulting in three coordination architectures, namely [CdI2(L1)]n (1), [CdBr2(L2)]n (2), and Cd2Cl4(L3)2 (3) [L1 = 1,3-bis(5,6- dimethylbenzimidazole)propane, L2 = 1,5-bis(5,6-dimethylbenzimidazole)pentane, L3 = 1,6- bis(5,6-dimethylbenzimidazole)hexane]. They have been characterized by elemental analyses, IR spectra, thermogravimetric (TG) analysis, and single-crystal X-ray diffraction. Complex 1displays a helical chain linked by the ligands L1, and a 2D supramolecular network is constructed through π-π stacking interactions; complex 2shows a helical chain structure with connections through two kinds of strong π-π stacking interactions into an intricate 3D supramolecular network; complex 3 contains dinuclear metallomacrocycles. The fluorescence properties of 1-3have been investigated in the solid state

Hydrothermal Synthesis and Crystal Structure of a Meso-Helical Chain Based on Lindqvist Polyoxometalates

2013 ◽  
Vol 68 (4) ◽  
pp. 345-350 ◽  
Author(s):  
Chun-Jing Zhang ◽  
Rui Fang ◽  
Yan Yu ◽  
Hai-Jun Pang ◽  
Hui-Yuan Ma ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Infrared Spectroscopy ◽  
Hydrothermal Synthesis ◽  
Chain Structure ◽  
Helical Chain ◽  
X Ray Diffraction ◽  
Hybrid Compound ◽  
Monoclinic System ◽  
Synthesis And Crystal Structure ◽  
X Ray

A new Lindqvist polyoxometalate-based hybrid compound with a helical chain structure, [Cu(bipy)2][W6O19] (1), (bipy = 2;20`-bipyridine), has been hydrothermally synthesized and characterized by elemental analysis, infrared spectroscopy, thermogravimetry, and single-crystal X-ray diffraction. The compound crystallizes in the space group C2/c of the monoclinic system. In 1, the [W6O19]2- anions are connected alternately with [Cu(bipy)2]2+ subunits to form a meso-helical chain. To our knowledge, this structure represents the first example of a helical chain structure consisting of the hexatungstate anion [W6O19]2-. The electrochemical properties of the title compound have been studied.

Helicity analysis of single, double, and triple helical iodine chains inside single-walled silicon carbide nanotubes

2017 ◽  
Vol 95 (8) ◽  
pp. 731-737 ◽  
Author(s):  
Zhen Yao ◽  
Chun-Jian Liu ◽  
Yi Li ◽  
Xiao-Dan Jing ◽  
Quan Yuan
Keyword(s):  
Silicon Carbide ◽  
Density Functional ◽  
Chain Structure ◽  
Field Analysis ◽  
Helical Chain ◽  
Functional Theory ◽  
Silicon Carbide Nanotubes ◽  
Helical Angle ◽  
Force Field Analysis ◽  
Chain Interaction

The helicity of encapsulated single, double, and triple helical iodine chains inside single-walled silicon carbide nanotubes is studied using the van der Waals interaction potential and density functional theory (DFT). Our results show that the optimal radius of the helical iodine chain increases linearly with tube radius, which produces a constant separation between the encapsulated chain and tube wall. The optimal helical angle cannot be determined with a single helical chain, due to the absence of the inter-chain interaction. For the double and triple helical chains, a small optimal helical angle can be induced by a large inter-chain interaction for the same tubes or a large tube for the same chain structure. We also find that the helicity is insensitive to the tube chirality. The DFT calculation further justifies our classical force field analysis and provides a more comprehensive understanding of this helical chains configuration.

Sign in / Sign up

Export Citation Format

Share Document