Table 1.

Photophysical characteristics of studied dyes in aqueous solutions (excitation/emission: 700:715–950 nm)

Entry	pH∗	λabs max, nm	ɛ × 10−3,M−1 cm−1†	λem max, nm	ψ‡
LS479	3	750	83	762	0.008
	8	747	105	762	0.042
LS482	3	760	105	760	0.037
	8	710	84	793	0.101
HITC	3	736	250	771	0.113
	8	736	250	771	0.106

^∗Buffers, pH 3 and pH 8 (Hydrion; Micro Essential Laboratory, Brooklyn, NY).

^†Molar absorptivities at the absorption maximum.

^‡Quantum yield measured relative to indocyanine green in DMSO (ψ = 0.12).