Table 1. Characteristics of NaYF₄:Tm³⁺,Yb³⁺ NPs loaded nanocapsules with synthetic or natural PE shell prepared by an emulsification-solvent evaporation method followed LbL approach.

System	Composition/PE bilayer type	CNPs(mg/ml)	DH, (nm)a	PdIb	ζ (mV)c
1a		0.4	126 ± 4	0.19 ± 0.02	+55 ± 7
1b	C12(DAPACl)2/Pol 403/SO/water (PSS/PDADMAC)	0.9	126 ± 4	0.24 ± 0.03	+56 ± 8
1c		1.5	143 ± 7	0.23 ± 0.03	+56 ± 8
1d		empty	110 ± 3	0.23 ± 0.03	+57 ± 8
2a		0.4	130 ± 5	0.22 ± 0.02	+41 ± 6
2b	C12(DAPACl)2/Pol 403/SO/water (DEX/CHIT)	0.9	136 ± 6	0.24 ± 0.03	+40 ± 5
2c		1.5	147 ± 8	0.25 ± 0.04	+43 ± 6
2d		empty	114 ± 3	0.23 ± 0.03	+40 ± 5

^aHydrodynamic diameter.

^bPolydispersity index.

^cZeta potential, mean ± SD, n = 3.