Highly Sensitive Gold Nanoparticle-Based Colorimetric Sensing of Mercury(II) through Simple Ligand Exchange Reaction in Aqueous Media

2009 ◽  
Vol 2 (1) ◽  
pp. 292-295 ◽  
Author(s):  
Yang-Rae Kim ◽  
Rakesh Kumar Mahajan ◽  
Jong Seung Kim ◽  
Hasuck Kim
Keyword(s):  
Exchange Reaction ◽  
Gold Nanoparticle ◽  
Ligand Exchange ◽  
Aqueous Media ◽  
Colorimetric Sensing ◽  
Ligand Exchange Reaction ◽  
Highly Sensitive

Controlled synthesis of multi-armed P3HT star polymers with gold nanoparticle core

RSC Advances ◽  
2016 ◽  
Vol 6 (54) ◽  
pp. 49206-49213 ◽  
Author(s):  
Hyun-Ji Kim ◽  
Kie Yong Cho ◽  
Seung Sang Hwang ◽  
Dong Hoon Choi ◽  
Min Jae Ko ◽  
...  
Keyword(s):  
Exchange Reaction ◽  
Gold Nanoparticle ◽  
Ligand Exchange ◽  
Star Polymers ◽  
Controlled Synthesis ◽  
Ligand Exchange Reaction ◽  
Gold Nps ◽  
Nanoparticle Core

Well-defined multi-armed P3HT star polymers with a gold nanoparticle (NP) core were synthesized by an arm-first method based on a ligand exchange reaction between linear end-functionalized P3HT (P3HT-SH) and gold NPs.

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.

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