Ligand exchange processes on solvated beryllium cations VII – water exchange on cationic [Be(H2O)3(Ln)]2+n (Ln: 4-O-Py−, Py, 4-(Py)-Py+, 3,5-(Py)2-Py2+, 3,4,5-(Py)3-Py3+)

The photochemistry of two anthracene-appended cobalt(iii) cyclam complexes is explored with a view to demonstrate a photoactivated ligand release process. The ligand exchange processes that occur in the complexes cis-[CoL(NO2)(ONO)]+ and trans-[CoL(NO2)(ONO)]+ in which L = 6-(anthracen-9-ylmethyl)-1,4,8,11-tetraazacyclotetradecane were monitored upon illumination of the anthracenyl chromophore at 360 nm in the presence of a large excess of thiocyanate. The trans-[CoL(NO2)(ONO)]+ complex underwent a ligand exchange reaction in the absence of light and displayed an enhancement of the reaction upon illumination. In contrast the cis-[CoL(NO2)(ONO)]+ complex was stable in the dark but displayed a significant quantum yield of photoactivated ligand release (Φ = 0.19). It is proposed that in cis-[CoL(NO2)(ONO)]+ the photoexcited anthracenyl chromophore undergoes efficient energy transfer to the cobalt(iii) cyclam before ligand exchange. Complexes based on the anthracenylcyclam–cobalt(iii) framework may be potentially useful candidates as photoactivated ligand release systems.

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A balance of redox and ligand-exchange processes in the reaction of H2[OsCl6] with thiourea: Isolation and characterization of a novel osmium complex [(NH2)2CSSC(NH2)2]2[OsIVCl6]Cl2·3H2O

Inorganica Chimica Acta ◽

10.1016/j.ica.2018.09.071 ◽

2019 ◽

Vol 484 ◽

pp. 352-356

Author(s):

Olga V. Rudnitskaya ◽

Ekaterina V. Dobrokhotova ◽

Ekaterina K. Kultyshkina ◽

Pavel V. Dorovatovskii ◽

Vladimir A. Lazarenko ◽

...

Keyword(s):

Ligand Exchange ◽

Isolation And Characterization ◽

Exchange Processes

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Ligand exchange processes in zirconocene dichloride–trimethylaluminum bimetallic systems and their catalytic properties in reaction with alkenes

Dalton Transactions ◽

10.1039/c8dt04156c ◽

2018 ◽

Vol 47 (47) ◽

pp. 16918-16937 ◽

Cited By ~ 2

Author(s):

Lyudmila V. Parfenova ◽

Pavel V. Kovyazin ◽

Vener Z. Gabdrakhmanov ◽

Galina P. Istomina ◽

Pavel V. Ivchenko ◽

...

Keyword(s):

Ligand Exchange ◽

Catalytic Properties ◽

Zirconocene Dichloride ◽

Bimetallic Systems ◽

Exchange Processes ◽

System L

The exchange processes in the system L2ZrCl2–(AlMe3)2 and its reactivity towards the alkene were studied.

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Recent Research Progress in Surface Ligand Exchange of PbS Quantum Dots for Solar Cell Application

Applied Sciences ◽

10.3390/app10030975 ◽

2020 ◽

Vol 10 (3) ◽

pp. 975 ◽

Cited By ~ 3

Author(s):

Hyung Ryul You ◽

Jin Young Park ◽

Duck Hoon Lee ◽

Younghoon Kim ◽

Jongmin Choi

Keyword(s):

Quantum Dots ◽

Solid State ◽

Ligand Exchange ◽

Exchange Process ◽

Surface States ◽

Solution Phase ◽

Research Progress ◽

Solar Cell Application ◽

Exchange Processes ◽

Particle Size And Shape

Colloidal quantum dots (CQDs) are considered as next-generation semiconductors owing to their tunable optical and electrical properties depending on their particle size and shape. The characteristics of CQDs are mainly governed by their surface chemistry, and the ligand exchange process plays a crucial role in determining their surface states. Worldwide studies toward the realization of high-quality quantum dots have led to advances in ligand exchange methods, and these procedures are usually carried out in either solid-state or solution-phase. In this article, we review recent advances in solid-state and solution-phase ligand exchange processes that enhance the performance and stability of lead sulfide (PbS) CQD solar cells, including infrared (IR) CQD photovoltaics.

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