Preparation of the micelle solutions of polymers 1 and 2^a.

Run no.	In preparation			Micelle solution
	Polymerb	[ZnPc]c (μM)	Bufferd	[ZnPc]e (μM)	E.E.f (%)	D 50% g (nm)
1	1	0	PBS	0	—	18
2	1	0	ABS	0	—	7
3	2	0	PBS	0	—	20
4	2	0	ABS	0	—	20
5	1	2.5	PBS	0.73	73	79
6	1	2.5	PBS	0.63	63	n.d.
7	1	2.5	PBS	0.52	52	n.d.
8	2	2.5	PBS	0.28	28	33
9	2	2.5	PBS	0.58	58	n.d.
10	2	2.5	PBS	0.44	44	n.d.

^a[Polymer] = 2 mg mL⁻¹.

^b1, P(St₁₇-co-DMAEA₁₃)-b-PPEGA₉₀; 2, PSt₃₇-b-PPEGA₈₂.

^cConcentration of ZnPc in DMF for dissolving the polymer.

^dPBS, phosphate buffered saline (pH 7.4); ABS, acetate-buffered saline (pH 5.0).

^eConcentration of ZnPc in the micelle solution determined by spectrofluorometry.

^fEncapsulation efficiency defined as E.E. (%) = ([ZnPc]_micelle × 5)/([ZnPc]_DMF × 2) × 100.

^gMedian diameter, as determined by DLS.