Observing Ultra-Small Gold Cluster to Plasmonic Nanoparticle Evolution in a One-Pot Aqueous Synthesis

2016 ◽  
Vol 1 (12) ◽  
pp. 3091-3096 ◽  
Author(s):  
Shweta Bhardwaj ◽  
Ramakrishna Itteboina ◽  
Tapan K. Sau
Keyword(s):  
Gold Cluster ◽  
One Pot ◽  
Aqueous Synthesis ◽  
Plasmonic Nanoparticle ◽  
Small Gold Cluster

One Pot Aqueous Synthesis of L-Histidine Amino Acid Capped Mn: ZnS Quantum Dots for Dopamine Sensing

2020 ◽  
Vol 16 (1) ◽  
pp. 71-78 ◽  
Author(s):  
Ravi Arunan ◽  
Printo Joseph ◽  
Muthusamy Sivakumar ◽  
Suthanthira Cross Guevara Kiruba Daniel
Keyword(s):  
Amino Acid ◽  
Quantum Dot ◽  
Colorimetric Sensing ◽  
One Pot ◽  
Aqueous Synthesis ◽  
Capping Agents ◽  
Average Size ◽  
The Right ◽  
Functional Group Modification ◽  
Mn Doped

Background: Mn doped ZnS is selected as the right element which is prominent among quantum dot for its high luminescent and quantum yield property and also non toxicity while comparing with other organometallic quantum dot synthesized by using different capping agents. Methods: An interesting observation based on colorimetric sensing of dopamine using manganese doped zinc sulfide quantum dot is discussed in this study. Mn doped ZnS quantum dot surface passivated with capping agents such as L-histidine and also in polymers like chitosan, PVA and PVP were studied and compared. The tunable fluorescence effect was also observed in different polymers and amino acid as capping agents. Optical characterization studies like UV-Visible spectroscopy and PL spectroscopy have been carried out. The functional group modification of Quantum dot has been analyzed using FTIR and size and shape analysis was conducted by using HRTEM image. Result: The strong and broad peak of FTIR in the range of 3500-3300 cm-1 confirms the presence of O-H bond. It is also observed that quenching phenomena in the luminescent peak are due to weaker confinement effect. The average size of the particle is shown to be around 4-5 nm. Changes in color of the quantum dot solution from transparent to dark brown has been due to the interaction with dopamine. Conclusion: Finally, L-Histidine amino acid capped Mn:ZnS shows better results in luminescence and size confinement properties. Hence, it was chosen for dopamine sensing due to its colloidal nature and inborn affinity towards dopamine, a neurotransmitter which is essential for early diagnosis of neural diseases

Gas-Phase Ion Chemistry of Small Gold Cluster Anions

2010 ◽  
Vol 29 (13) ◽  
pp. 3001-3006 ◽  
Author(s):  
Robert F. Höckendorf ◽  
Yali Cao ◽  
Martin K. Beyer
Keyword(s):  
Gas Phase ◽  
Gold Cluster ◽  
Cluster Anions ◽  
Ion Chemistry ◽  
Gas Phase Ion Chemistry ◽  
Gas Phase Ion ◽  
Small Gold Cluster

A high yield one-pot aqueous synthesis of crystalline SnO2 nanoparticles

2017 ◽  
Vol 187 ◽  
pp. 151-153 ◽  
Author(s):  
R. Dujardin ◽  
F. Delorme ◽  
B. Pintault ◽  
P. Belleville ◽  
C. Autret ◽  
...  
Keyword(s):  
Sno2 Nanoparticles ◽  
High Yield ◽  
One Pot ◽  
Aqueous Synthesis

Carbon nanospheres with dual-color emission and their application in ratiometric pyrophosphate sensing

The Analyst ◽  
2019 ◽  
Vol 144 (2) ◽  
pp. 550-558 ◽  
Author(s):  
Zhong-Xia Wang ◽  
Yuan-Fei Gao ◽  
Xian-He Yu ◽  
Fen-Ying Kong ◽  
Wen-Juan Wang ◽  
...  
Keyword(s):  
Physicochemical Properties ◽  
Carbon Nanospheres ◽  
One Pot ◽  
Aqueous Synthesis ◽  
Dual Color ◽  
Ph Dependent ◽  
The One ◽  
Solubility Equilibrium ◽  
Color Emission ◽  
Fluorescent Carbon

Herein, we employ pH-dependent solubility equilibrium to develop the one-pot aqueous synthesis of dual-color emission fluorescent carbon nanosphere (DFCSs) with novel physicochemical properties.

scholarly journals Are Fluorescent Silicon Nanoparticles Formed in a One-Pot Aqueous Synthesis?

2019 ◽  
Vol 31 (18) ◽  
pp. 7167-7172 ◽  
Author(s):  
Bohdan V. Oliinyk ◽  
Dmytro Korytko ◽  
Vladimir Lysenko ◽  
Sergei Alekseev
Keyword(s):  
Silicon Nanoparticles ◽  
One Pot ◽  
Aqueous Synthesis ◽  
Fluorescent Silicon Nanoparticles

scholarly journals Switching from molecular to bulklike dynamics in electronic relaxation of a small gold cluster

2012 ◽  
Vol 85 (1) ◽  
Author(s):  
Jörg Stanzel ◽  
Matthias Neeb ◽  
Wolfgang Eberhardt ◽  
Polina G. Lisinetskaya ◽  
Jens Petersen ◽  
...  
Keyword(s):  
Gold Cluster ◽  
Electronic Relaxation ◽  
Small Gold Cluster
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