Table 1. NEXAFS: Peak Position (eV) and Relative Assignment of the Main Features Appearing in the C and N K-Edge NEXAFS Spectra of Samples 4, 10, and 16.

sample	4	10	16	assignment
C K-edge	284.7	285.1	284.8	πC=C*
	286.0	286.2	286.4	πC=N*
	287.6	287.8	287.8	σC–H*
	288.4	288.4	288.4	πC=O*
	293.4	294.3	291.5	σC–C*
	301.5	303.5	299.0	σC=N*
N K-edge	396.1	396.1	396.1
	397.5	397.9	397.9	π1*
	399.4	399.4	399.4	π2*
	404.9	403.7	403.7	σC=N*
	411.0	411.0	411.0	σC–N*