What is the meaning of capping agent? Why it is used?
Answer:
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Basically..A capping agent is a strongly absorbed monolayer of usually organic molecules used to aid stabiliztion of nanoparticles....
.Particles can be functionalized using capping agents to impart useful properties...
A capping agent can be polymerized to form a fuctional polymer ( exaple u can take as..antimicrobial polymers containing silver nanoparticles...ok..
A capping agent is used to protect the surface of materials, commonly nanoparticles.....
--> Its prevents degredation and can hep preserve different properties of the material...
--> They are generally made of small ligands and impart different solubilities material..
-->Capping agents like dentrimers ,even clay particles protect the nanoparticles from aggregation and chemical reaction.......k
FOR EXAMPLE :-
understand this with some examples....
Tin particles that were prepared using three different capping agents, hydrobenzamide, citrate, and polyvinyl pyrrolidone (PVP) exhibited different particle sizes.,,,,,,,,,,,
N,N-dimethylformamide (DMF) can be used as capping agent in preparation of silica gel and glass monolith from tetramethoxysilane.,,,,,,,,,,,
Mercaptoethanol or thio urea is a capping agent in zns:cu nanoparticles.....
hope,this is the best answer..
all the best
A capping agent is used to protect the surface of materials, commonly nanoparticles. Its prevents degredation and can hep preserve different properties of the material. They are generally made of small ligands and impart different solubilities material
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