Table 1. Fluorescence quantum yield (Φ _F), radiative (k _r) and nonradiative (k _nr) rate constants of Lip-Cy5.5m, NGal-NIR-AuNPs/CHO-NIR-AuNPs without and with enzyme, and Lip-Cy5.5m@HGNs.

Samples	Φ F	k r (s–1)	k nr (s–1)
Lip-Cy5.5m	0.18	2.2 × 108	1.0 × 109
NGal-NIR-AuNPs/CHO-NIR-AuNPs without enzyme	0.057	2.1 × 108	3.3 × 109
NGal-NIR-AuNPs/CHO-NIR-AuNPs with enzyme (6 h)	0.36	1.8 × 109	3.2 × 109
Lip-Cy5.5m@HGNs	0.63	5.3 × 109	3.1 × 109