Picosecond-resolved fluorescence transient lifetime of NF and 30 nm ZnO–NF in DMSO solvent. The emission (monitored at 440 nm) was detected with 375 nm laser excitation. The values in parentheses represent the relative weight percentages of the time components.

Systems	τ 1 (ns)	τ 2 (ns)	τ 3 (ns)	τ avg (ns)
NF	1.6 (100)	—	—	1.6
ZnO–NF	0.05 (70)	0.7 (22)	3.9 (8)	0.5