Table 1.

Spin-Hamiltonian parameters of nitroxide radicals in toluene and on inner surface of graphite oxide.

	gxx	gyy	gzz	giso	Axx	Ayy	Azz	Aiso
H1 toluene 298 K			2.0062				14.07
H1 toluene 120 K	2.0095	2.0066	2.0024	2.0062	5.3	4.3	32.56	14.05
H1 GO 120 K	2.0092	2.0063	2.0024	2.0060	4.3	4.8	35.22	14.77
H2 toluene 298 K			2.0062				13.93
H2 toluene 120 K	2.0095	2.0068	2.0024	2.0062	5.4	4.0	32.34	13.91
H2 GO 120 K	2.0092	2.0065	2.0024	2.0060	4.3	4.8	34.74	14.77
H3 toluene 298 K			2.0061				14.02
H3 toluene 120 K	2.0094	2.0068	2.0023	2.0062	5.3	4.1	32.66	14.02
H3 GO 120 K	2.0092	2.0060	2.0024	2.0059	4.3	4.8	34.97	14.69

The uncertainties in determining of the g-values are 0.0002. The uncertainties in determining of the HFI-constants are 0.5 G for A_xx, A_yy, and 0.05 G for A_zz, A_iso.