Energy-Transfer Rate in Crystals of Double-Complex Salts Composed of [Ru(N-N)3]2+(N-N = 2,2‘-Bipyridine or 1,10-Phenanthroline) and [Cr(CN)6]3-: Effect of Relative Orientation between Donor and Acceptor

2001 ◽  
Vol 40 (14) ◽  
pp. 3406-3412 ◽  
Author(s):  
Takuhiro Otsuka ◽  
Akiko Sekine ◽  
Naoki Fujigasaki ◽  
Yuji Ohashi ◽  
Youkoh Kaizu
Keyword(s):  
Energy Transfer ◽  
Transfer Rate ◽  
Relative Orientation ◽  
Energy Transfer Rate ◽  
Double Complex ◽  
Double Complex Salts ◽  
Donor And Acceptor ◽  
Complex Salts

Crystal Structure and Energy Transfer in Double-Complex Salts Composed of Tris(2,2‘-bipyridine)ruthenium(II) or Tris(2,2‘-bipyridine)osmium(II) and Hexacyanochromate(III)

1999 ◽  
Vol 38 (6) ◽  
pp. 1340-1347 ◽  
Author(s):  
Takuhiro Otsuka ◽  
Naoto Takahashi ◽  
Naoki Fujigasaki ◽  
Akiko Sekine ◽  
Yuji Ohashi ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Energy Transfer ◽  
Double Complex ◽  
Double Complex Salts ◽  
Complex Salts

Cobaloxime-Based Double Complex Salts as Efficient and Versatile Catalysts for the Light-Driven Hydrogen Evolution Reaction

2020 ◽  
Author(s):  
Elisabeth Hofmeister ◽  
Jisoo Woo ◽  
Tobias Ullrich ◽  
Lydia Petermann ◽  
Kevin Hanus ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Systematic Study ◽  
Cobalt Complexes ◽  
Spectroscopic Studies ◽  
Double Complex ◽  
Double Complex Salts ◽  
Noble Metal Catalysts ◽  
Reduction Potentials ◽  
Complex Salts

Cobaloximes and their BF<sub>2</sub>-bridged analogues have emerged as promising non-noble metal catalysts for the photocatalytic hydrogen evolution reaction (HER). Herein we report the serendipitous discovery that double complex salts such as [Co(dmgh)<sub>2</sub>py<sub>2</sub>]<sup>+</sup>[Co(dmgBPh<sub>2</sub>)<sub>2</sub>Cl<sub>2</sub>]<sup>-</sup> can be obtained in good yields by treatment of commercially available [Co(dmgh)<sub>2</sub>pyCl] with triarylboranes. A systematic study on the use of such double complex salts and their single salts with simple counterions as photocatalysts revealed HER activities comparable or superior to existing cobaloxime catalysts and suggests ample opportunities for this compound class in catalyst/photosensitizer dyads and immobilized architectures. Preliminary electrochemical and spectroscopic studies indicate that one key advantage of these charged cobalt complexes is that the reduction potentials as well as the electrostatic interaction with charged photosensitizers can be tuned.

Extraction of energy transfer rate constants from the pulsed laser generated thermal lens spectrometer signal

1982 ◽  
Vol 80 ◽  
pp. 433-436 ◽  
Author(s):  
R.T. Bailey ◽  
F.R. Cruickshank ◽  
R. Guthrie ◽  
D. Pugh ◽  
I.J.M. Weir
Keyword(s):  
Energy Transfer ◽  
Thermal Lens ◽  
Rate Constants ◽  
Transfer Rate ◽  
Pulsed Laser ◽  
Energy Transfer Rate

scholarly journals Research on the design and application of capillary heat exchangers for heat pumps in coastal areas

2021 ◽  
Vol 42 (3) ◽  
pp. 333-348
Author(s):  
Zhenpeng Bai ◽  
Yanfeng Li ◽  
Jin Zhang ◽  
Alan Fewkes ◽  
Hua Zhong
Keyword(s):  
Renewable Energy ◽  
Energy Transfer ◽  
Heat Exchanger ◽  
Heat Pump ◽  
Transfer Rate ◽  
Coastal Areas ◽  
Heat Energy ◽  
Low Carbon ◽  
Energy Transfer Rate ◽  
Pump System

This study investigated the optimal design of a capillary heat exchanger device for the heat pump system and its innovative engineering application in a building. The overall aim was to use a capillary heat exchanger to obtain energy in coastal areas for promoting renewable energy in low-carbon building design. Initially, the main factors affecting the efficiency of the capillary heat exchanger were identified, a mathematical model was then established to analyse the heat transfer process. The analysis showed the flow rate and the capillary length are the key factors affecting the efficiency of the capillary heat exchanger. Secondly, to optimize the structural design of the capillary heat exchanger, the heat energy transfer is calculated with different lengths of the capillary under various flow rates in summer and winter conditions, respectively. Thirdly, a typical building is selected to analyse the application of the capillary heat exchanger for extracting energy in the coastal area. The results show the performance of the selected capillary heat exchanger heat pump system, in winter, the heat energy transfer rate is 60 W/m2 when the seawater temperature is 3.7 °C; in summer, the heat energy transfer rate is 150 W/m2 when the seawater temperature is 24.6 °C. Finally, the above field test results were examined using a numerical simulation model, the test and simulation results agree with each other quite well. This paper is conducive in promoting the development of the capillary heat exchanger heat pump as an innovative sustainable technology for net-zero energy and low carbon buildings using renewable energy in coastal areas. Practical application: A recently proposed capillary heat exchanger is used as an energy extraction and utilisation device to obtain energy in coastal areas for promoting renewable energy in low-carbon building design. This paper explores the application of a capillary heat exchanger as both cold and heat sources for application in typical low-rise buildings. The analysis of the heat energy transfer rate of a typical low-rise building located in a coastal area in summer and winter provides guidance for the application of capillary heat exchangers.

Improvement of Er3+:4I11/2→Ce3+:2F5/2 energy transfer rate in Er3+/Ce3+ co-doped TeO2–ZnO–Na2O–Nb2O5 glasses

2009 ◽  
Vol 129 (1) ◽  
pp. 1-5 ◽  
Author(s):  
Yaxun Zhou ◽  
Jun Wang ◽  
Shixun Dai ◽  
Tiefeng Xu ◽  
Qiuhua Nie ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Transfer Rate ◽  
Energy Transfer Rate ◽  
Co Doped

Luminescence Properties of Transition-Metal Ions in Double Complex Salts

1990 ◽  
Vol 45 (6) ◽  
pp. 771-778
Author(s):  
Hans-Herbert Schmidtke ◽  
Hans J. Mink
Keyword(s):  
Energy Transfer ◽  
Transition Metal Ions ◽  
Complex Compounds ◽  
Luminescence Spectra ◽  
Energy Transfer Mechanism ◽  
No Emission ◽  
Double Complex ◽  
Decay Channels ◽  
Double Complex Compounds ◽  
Complex Salts

AbstractThe luminescence spectra and radiative lifetimes of a series of d3 and d6 double complex compounds with bipyridine (bip), phenanthroline (phen), ammonia and ethylenediamine (en) ligands in the cations and chloride, cyanide, thiocyanide and oxalate (ox) ligands in the anions have been investigated at temperatures down to 2 K. Although energy transfer between the component ions is predicted from the Förster and Dexter theory to be effective due to the finite overlap of the donor emission and the acceptor absorption spectra, no emission could be detected for most of the double complexes. Only [Ru(bip)3]tr-[Cr(NH3)2(NCS)4]2, [Ru(bip)3][PtCl6] and [Cr(d4-en)3] [Rh(SCN)6] exhibit characteristic luminescence spectra which in part are enhanced compared to their component emissions. For rationalizing the results, radiationless deactivation by various decay channels which compete with the energy transfer mechanism must be considered.

Synthesis of CuxNi1−x alloy nanoparticles from double complex salts and investigation of their magnetoimpedance effects

RSC Advances ◽  
2015 ◽  
Vol 5 (88) ◽  
pp. 71601-71607 ◽  
Author(s):  
Seyed Abolghasem Kahani ◽  
Mansoure Shahrokh
Keyword(s):  
Reduction Method ◽  
Chemical Reduction ◽  
Alloy Nanoparticles ◽  
Chemical Reduction Method ◽  
Double Complex ◽  
Double Complex Salts ◽  
Complex Salts

This work is a novel study of the synthesis of CuxNi1−x nanoalloy from double complex salts by chemical reduction method.

Sign in / Sign up

Export Citation Format

Share Document