Synthesis and reactivity of the uranium phosphinidene metallocene [5-1,3-(Me3Si)2C5H3]2U(=P-2,4,6-iPr3C6H2)(OPMe3): Influence of the coordinated Lewis base

2021 ◽  
Author(s):  
Shichun Wang ◽  
Yi Heng ◽  
Tongyu Li ◽  
Gouhua Hou ◽  
Guofu Zi ◽  
...  
Keyword(s):  
Ambient Temperature ◽  
Exchange Reaction ◽  
Ligand Exchange ◽  
Lewis Base ◽  
Ligand Exchange Reaction

This paper describes the synthesis and reactivity of [5-1,3-(Me3Si)2C5H3]2U(=P-2,4,6-iPr3C6H2)(OPMe3) (6) which is accessible from a ligand exchange reaction between [5-1,3-(Me3Si)2C5H3]2U(=P-2,4,6-iPr3C6H2)(OPPh3) (2) and Me3PO at ambient temperature. Phosphinidene 6 exhibits no...

F−(H2O)+CH3I ligand exchange reaction dynamics

2020 ◽  
Vol 33 (2) ◽  
pp. 210-216
Author(s):  
Björn Bastian ◽  
Tim Michaelsen ◽  
Milan Ončák ◽  
Jennifer Meyer ◽  
Roland Wester
Keyword(s):  
Exchange Reaction ◽  
Ligand Exchange ◽  
Reaction Dynamics ◽  
Ligand Exchange Reaction

An all-in-one approach for synthesis and functionalization of nano colloidal gold with acetylacetone

2021 ◽  
Author(s):  
Li Zhang ◽  
Hongcen Zheng ◽  
Yonghai Gan ◽  
Bingdang Wu ◽  
Zhihao Chen ◽  
...  
Keyword(s):  
Exchange Reaction ◽  
Ligand Exchange ◽  
Fold Increase ◽  
Charge Transfer Complexes ◽  
Photochemical Property ◽  
Exchange Reactions ◽  
Ligand Exchange Reaction ◽  
Enhanced Photoluminescence ◽  
Good Imaging ◽  
Imaging Probes

Abstract Controllable synthesis, proper dispersion, and feasible functionalization are crucial requirements for the application of nanomaterials in many scenarios. Here, we report an all-in-one approach for the synthesis and functionalization of gold nanoparticles (AuNPs) with the simplest β-diketone, acetylacetone (AcAc). With this approach, the particle size of the resultant AuNPs was tunable by simply adjusting the light intensity or AcAc dosage. Moreover, owing to the capping role of AcAc, the resultant AuNPs could be stably dispersed in water for a year without obvious change in morphology and photochemical property. Formation of ligand to metal charge transfer complexes was found to play an important role in the redox conversion of Au with AcAc. Meanwhile, the moderate complexation ability enables the surface AcAc on the AuNPs to undergo ligand exchange reactions. With the aid of Ag+, the AuNPs underwent ligand exchange reaction with glutathione and exhibited enhanced photoluminescence (PL) with a maximum of 22-fold increase in PL intensity. The PL response was linear to the concentration of glutathione in the range of 0~500 μM. Such a ligand exchange reaction makes the obtained AuNPs being good imaging probes. To the best of our knowledge, this is the first work on illustrating the roles of AcAc as a multifunctional ligand in fabrication of NPs, which sheds new light on the surface modulation in synthesis of nanomaterials.

scholarly journals Ligand Exchange Reaction of Carbonylhemoglobin to Oxyhemoglobin in a Hemoglobin Liquid Membrane.

1995 ◽  
pp. 123-127 ◽  
Author(s):  
Joo-Eun CHUNG ◽  
Kenichi HAMADA ◽  
Hiromi SAKAI ◽  
Shinji TAKEOICA ◽  
Eishun TSUCHIDA
Keyword(s):  
Exchange Reaction ◽  
Ligand Exchange ◽  
Liquid Membrane ◽  
Ligand Exchange Reaction

Heteroleptic Bis(cis-1,2-disubstituted ethylene-1,2-dithiolato)nickel Complexes Obtained by Ligand-Exchange Reaction: Synthesis and Properties

2014 ◽  
Vol 53 (6) ◽  
pp. 2841-2847 ◽  
Author(s):  
Thi Minh Ha Vuong ◽  
Thanh-Tuan Bui ◽  
Alix Sournia-Saquet ◽  
Alain Moreau ◽  
Kathleen I. Moineau-Chane Ching
Keyword(s):  
Exchange Reaction ◽  
Ligand Exchange ◽  
Nickel Complexes ◽  
Reaction Synthesis ◽  
Ligand Exchange Reaction
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