Table 1 Singlet oxygen generation rate of metal nanoclusters and dye photosensitizer under continuous wave 473 nm irradiation.

From: Ligand impact on reactive oxygen species generation of Au10 and Au25 nanoclusters upon one- and two-photon excitation

Photosensitizer

Emission peak

Quantum

Yield

Long lifetime component (ns) (relative percentage of long lifetime component vs total lifetime)

1O2 generation rate (1O2 per cluster per min) @473 nm continuous wave laser irradiation

Au10SG10

615 nm

<10−4

(ref. 17)

767 (15%)

1.07 ± 0.06

Au10AcCys10

605 nm

\( < \)2.5 × 10−5

(this work)*

680 (17.86%)

1.09 ± 0.18

Au25SG18

~815 nm

10−3

(ref. 17)

883 (6%)

1.86 ± 0.06

Au25AcCys18

~820 nm

1.2 × 10−4

(this work)*

812 (38%)

2.71 ± 0.20

NMB

652 nm

0.04

(ref. 56)

33 (100%)

2.28 ± 0.11

  1. *The quantum yield of Au25AcCys18 (Au10AcCys10) was estimated using the reference method and Au25SG18 (Au10SG10) as the reference. Standard error for quantum yield is 10%.
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