An average stoichiometry of [C60H9(NC4H8NCH3)9] was determined by XPS. Only one spectra for N1s has given in attached pdf (highlighted part is important). I could not understand based on XPS how they are able to find out no of ligands on fullerene-C60. Based on this two more papers are there.
A. V. Fetisov
Hello, Sanjeeb! I think the authors used both carbon and nitrogen xps peaks when calculated ratio C:N. In the Experimental part (Measurements) the authors pointed out that the core-level spectra were referenced by the C1s neutral carbon peak at the binding energy (BE) of 284.6 eV. Consequently, the C1s spectrum was done but didn't shown in the peper.
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Sanjeeb Sutradhar
Yup. I got the same reply from the original author. Thanks a lot for your valuable suggestion.
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