NMR Studies into the Potential Interactions of Fullerene C_𝟔𝟎 with Tetraphenylporphyrin and Some of Its Derivatives

Table 4

¹H relaxation Rates of Phenyl Hydrogen in H₂[(p-CN)₄TPP] with and without C₆₀ in Chlorobenzene-d₅._.

T (K)	H2[(p-CN)4TPP]		H2[(p-CN)4TPP] with C60
	𝑅1 (1/s)	τ C (ps)	𝑅1 (1/s)	τ C (ps)
268	1.01 (0.012)	286	1.04 (0.015)	294
283	0.968 (0.015)	274	0.986 (0.020)	279
298	0.913 (0.015)	258	0.838 (0.020)	237
313	0.879 (0.061)	249	0.832 (0.021)	235
328	0.831 (0.017)	235	0.731 (0.023)	207

Values in parentheses represent error limits at the 90% confidence level.