Co(II) has a nuclear spin of I=7/2 (100%) so you'd expect 8 lines in the ESR spectrum assuming no other spin active nuclei (like P or F) are present.
but I m getting only one peak in cobalt nanopatricles EPR spectrum which was used as a dopant, in a unkown aqueous solution.
In complex or fluxional environments the coupling can sometimes be lost. In your case the nanoparticles will be stabilized by surfactants if in solution which could influence things. The size and concentration of the nanoparticles will also affect the signal you get.
I agree with Prof. David. The number of peaks depends on the environement and temperature also. If you measure at low temp and low concentration then only u may get the hyperfine lines.
Is there is an effect of particle size (i.e. Bulk to nano size )on EPR spectra at room temperature?
if you have any reference plz, kindly forward!
I have just seen this question. I wonder if you found your answer or already finished that project and move forward?
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