Protein-gold nanoclusters for identification of amino acids by metal ions modulated ratiometric fluorescence

The Analyst ◽  
2012 ◽  
Vol 137 (7) ◽  
pp. 1618 ◽  
Author(s):  
Min Wang ◽  
Qingsong Mei ◽  
Kui Zhang ◽  
Zhongping Zhang
Keyword(s):  
Amino Acids ◽  
Metal Ions ◽  
Gold Nanoclusters ◽  
Ratiometric Fluorescence

Visualized ratiometric fluorescence sensing system for copper ions based on gold nanoclusters/perovskite quantum dot @SiO2 nanocomposites

The Analyst ◽  
2021 ◽  
Author(s):  
Wanying Xue ◽  
Jiangyan Zhong ◽  
Haishan Wu ◽  
Jianhua Zhang ◽  
Yuwu Chi
Keyword(s):  
Quantum Dot ◽  
Metal Ions ◽  
Environmental Pollution ◽  
Copper Ions ◽  
Gold Nanoclusters ◽  
Ratiometric Fluorescence ◽  
Fluorescence Sensing ◽  
Sensing System ◽  
Sio2 Nanocomposites ◽  
Ratiometric Fluorescence Sensing

Excessive copper ions (Cu2+)cause serious environmental pollution and even endanger the health of organisms. Fluorescence chemosensing materials are widely used in the detection of metal ions due to their simple...

Layered graphene oxide membranes functioned by amino acids for efficient separation of metal ions

2021 ◽  
Vol 546 ◽  
pp. 149145
Author(s):  
Bo Zheng ◽  
Xianxian Chu ◽  
Han Li ◽  
Xiuli Wu ◽  
Xin Zhao ◽  
...  
Keyword(s):  
Amino Acids ◽  
Graphene Oxide ◽  
Metal Ions ◽  
Separation Of Metal Ions ◽  
Efficient Separation ◽  
Oxide Membranes ◽  
Graphene Oxide Membranes

Chemically Selective Reactions in Confined Spaces in Hybrid Aerogels

2005 ◽  
Vol 899 ◽  
Author(s):  
Xipeng Liu ◽  
Chunhua Yao ◽  
William M Risen
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Metal Ions ◽  
Chemical Reactions ◽  
Reaction Products ◽  
Spatial Confinement ◽  
Confined Spaces ◽  
Hybrid Silica ◽  
Hybrid Aerogels ◽  
Chemically Selective

AbstractBy employing novel hybrid silica/functional polymer aerogels, control of the course of chemical reactions between reactants confined inside of the aerogels with reactants whose access to the confinement domain is controlled by diffusion has been explored. Thus, monolithic silica/biopolymer hybrid aerogels have been synthesized with coordinated metal ions that can react with amino acids, such as L-cysteine, that are provided externally in a surrounding solution. Metal ions, such as Au(III), that can react in solution with the amino acid to produce one set of products under a given set of stoichiometric or concentration conditions, and a different set of products under a second set of conditions, were selected for incorporation into the aerogel. It was discovered that the course of the reaction can be changed by spatial confinement of the reaction domain in the aerogel. For example, in the case of Au(III) and L-cysteine, the Au(III) ions are confined in nanoscale domains, and when they are reacted with the amino acid, the nature of the reaction products is controlled by diffusion of the L-cysteine into the domains. Exploration of these and related phenomena will be presented.

Nonenzymatic Catalysis by Metal Ions and Phosphoric Acid Esters of Hydroxamic Acid Formation

1980 ◽  
Vol 35 (6) ◽  
pp. 727-730
Author(s):  
Oemer Saygin ◽  
Peter Decker
Keyword(s):  
Amino Acids ◽  
Phosphoric Acid ◽  
Metal Ions ◽  
Inorganic Phosphate ◽  
Hydroxamic Acid ◽  
Hydroxamic Acids ◽  
Bivalent Ions ◽  
No Release ◽  
Catalytic Effects ◽  
Acid Esters

Abstract Nonenzymatic catalysis by bivalent ions of Be, Mg, Ca, Zn, Mn, Ni and Co and bioorganic phosphates of the formation of hydroxamic acids from acetate or amino acids has been studied systematically. Increased yields of hydroxamate were observed at particular combinations of reactants. The most prominent increase (ca. 15-fold) was found with acetate and Ni++, and with a combination of ATP and Be++. Among others especially ribose-5-phosphate and glucose-5-phosphate enhanced yields in the presence of most metal ions. Since no release of inorganic phosphate was observed, this effect cannot be interpreted as an evidence for intermediate transhosphorylation reactions; it may also result from simple catalytic effects of metal sugar complexes.

Competition between Cd(II) and other divalent transition metal ions during complex formation with amino acids, peptides, and chelating agents

2016 ◽  
Vol 327-328 ◽  
pp. 55-69 ◽  
Author(s):  
Maurizio Remelli ◽  
Valeria M. Nurchi ◽  
Joanna I. Lachowicz ◽  
Serenella Medici ◽  
M. Antonietta Zoroddu ◽  
...  
Keyword(s):  
Amino Acids ◽  
Complex Formation ◽  
Transition Metal ◽  
Metal Ions ◽  
Chelating Agents ◽  
Transition Metal Ions

scholarly journals P4.08 - Detection of metal ions using fluorescent gold nanoclusters

2017 ◽  
Author(s):  
M. Vogel ◽  
S. Matys ◽  
K. Pollmann ◽  
J. Raff
Keyword(s):  
Metal Ions ◽  
Gold Nanoclusters
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