Phase transfer-driven rapid and complete ligand exchange for molecular assembly of phospholipid bilayers on aqueous gold nanocrystals

2019 ◽  
Vol 55 (22) ◽  
pp. 3195-3198 ◽  
Author(s):  
Youngjae Lee ◽  
Jungwoo Jang ◽  
Jinho Yoon ◽  
Jeong-Woo Choi ◽  
Inhee Choi ◽  
...  
Keyword(s):  
Ligand Exchange ◽  
Phase Transfer ◽  
Molecular Assembly ◽  
Phospholipid Bilayers ◽  
Phospholipid Bilayer ◽  
Rapid Synthesis ◽  
Exchange Method ◽  
Gold Nanocrystals

A phase transfer-mediated ligand exchange method is developed for highly selective and rapid synthesis of colloidal phospholipid bilayer-coated gold nanocrystals.

Lead Sulfide Quantum Dot Photodetector with Enhanced Responsivity through a Two-Step Ligand-Exchange Method

2019 ◽  
Vol 2 (10) ◽  
pp. 6135-6143 ◽  
Author(s):  
Haodong Tang ◽  
Jialin Zhong ◽  
Wei Chen ◽  
Kanming Shi ◽  
Guanding Mei ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Lead Sulfide ◽  
Ligand Exchange ◽  
Exchange Method

Localized Surface Plasmon Resonance Effect of Gold Nanoparticles Using 3-Mercaptopropionic Acid as Capping Material for Sensing Probe

2021 ◽  
Vol 891 ◽  
pp. 43-48
Author(s):  
Muhammad Tegar Pambudi ◽  
Suhandoko Dwi Isro ◽  
Priastuti Wulandari
Keyword(s):  
Gold Nanoparticles ◽  
Surface Plasmon Resonance ◽  
Ligand Exchange ◽  
Localized Surface Plasmon Resonance ◽  
Reduction Method ◽  
Colloidal Solution ◽  
Localized Surface Plasmon ◽  
Exchange Method ◽  
Vibrational Peak ◽  
Absorbance Spectra

Gold nanoparticles (AuNP) has been used in a wide range of applications especially in medicine and optoelectronic applications due to its localized surface plasmon resonance (LSPR) effect. LSPR observation of AuNP solution shows that the plasmonic peak in the absorbance spectra lies in the range of visible light around 520 nm with deep red-wine color. The optical characteristic is controlled by the size and shape of the nanoparticles including its surface functionalization. Our research is focused on the adsorption study of 3-mercaptopropionate (3-MP) on AuNP (AuMP) surface synthesized by ligand exchange method and also by direct reduction method. The characterizations are conducted by use of UV-vis and FTIR spectroscopies in order to investigate the effect of LSPR. The absorbance spectra show that both experimental methods of AuMP give a similar profile of red-shifted in the plasmonic peaks in comparison to that of citrate-capped AuNP as a reference from 519 nm to 520 nm. The ligand exchange method of AuMP synthesis results in an unstable colloidal solution after being stored for a week at room temperature while the reduction method results in a stable colloidal solution of AuMP even though it has been stored for 2 months. The FTIR spectra show the difference in vibrational peak intensities between the 3-MP on AuNP and the 3-MPA as reference. The peak of carboxylate (COO-) asymmetric stretching is shifted to low frequency from 1708 cm-1 to 1632 cm-1 indicate the effect of LSPR while the shift to high frequencies for some vibrational peak intensities relates to the strong effect of chemical coordination between gold and capping material. The simulation of the vibration energy by use of the Density Functional Theory (DFT) method shows a similar tendency to that of the peak intensities along the infrared spectrum from experimental results.

A route to robust thioether-functionalized MOF solid materials displaying heavy metal uptake and the ability to be further oxidized

2017 ◽  
Vol 46 (36) ◽  
pp. 12036-12040 ◽  
Author(s):  
Guo-Wei Xiao ◽  
Teng-Fei Chen ◽  
Xin-Zhan Sun ◽  
Hui Guo ◽  
Zhong-Feng Li ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Ligand Exchange ◽  
Metal Uptake ◽  
Alternative Strategy ◽  
Heavy Metal Uptake ◽  
Solid Materials ◽  
Exchange Method

A facile and mild solvent-assisted ligand exchange method was developed as an alternative strategy to achieve thioether-based MOFs, and their oxidized forms, that were able to take up heavy metals from solutions and capture CO2.

scholarly journals Correction: One pot ligand exchange method for a highly stable Au–SBA-15 catalyst and its room temperature CO oxidation

2018 ◽  
Vol 54 (91) ◽  
pp. 12892-12892
Author(s):  
Yogita Soni ◽  
I. Kavya ◽  
T. G. Ajithkumar ◽  
C. P. Vinod
Keyword(s):  
Co Oxidation ◽  
Ligand Exchange ◽  
Room Temperature ◽  
One Pot ◽  
Exchange Method

Correction for ‘One pot ligand exchange method for a highly stable Au–SBA-15 catalyst and its room temperature CO oxidation’ by Yogita Soni et al., Chem. Commun., 2018, DOI: 10.1039/c8cc06887a.

scholarly journals Size-controlled and water-soluble gold nanoparticles using UV-induced ligand exchange and phase transfer

2018 ◽  
Vol 54 (95) ◽  
pp. 13355-13358 ◽  
Author(s):  
Jan Bart ten Hove ◽  
Laura M. I. Schijven ◽  
Junyou Wang ◽  
Aldrik H. Velders
Keyword(s):  
Gold Nanoparticles ◽  
Ligand Exchange ◽  
Water Solubility ◽  
Phase Transfer ◽  
Water Soluble ◽  
Size Distributions ◽  
Seeded Growth ◽  
Growth Approach ◽  
Size Controlled

Oleylamine-capped gold nanoparticles (AuNPs) with sizes ranging from 5 to 13 nm and narrow size distributions (<10%) are synthesized by using a seeded growth approach. Water-solubility is achieved by using a UV-induced ligand exchange approach.

Manipulation of Phase-Transfer Ligand-Exchange Dynamics of PbS Quantum Dots for Efficient Infrared Photovoltaics

2019 ◽  
Vol 123 (50) ◽  
pp. 30137-30144 ◽  
Author(s):  
Lei Wang ◽  
Yinglin Wang ◽  
Yuwen Jia ◽  
Xinlu Liu ◽  
Ting Liu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Ligand Exchange ◽  
Phase Transfer ◽  
Pbs Quantum Dots
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