Table 1 Properties of systems for H2 evolution in the presence and absence of PEI.

From: Secondary coordination sphere accelerates hole transfer for enhanced hydrogen photogeneration from [FeFe]-hydrogenase mimic and CdSe QDs in water

Systems

λ e /nm

τ e /ns

k e /M −1 ·s −1

k h /M −1 ·s −1

ζ/mV

TON

t lifetime /h

without PEI

479

14.7

3.4 × 1011

4.6 × 108

−8.7

20000

4

with PEI

475

9.6

4.5 × 1011

1.5 × 1010

+25.7

83600

28

  1. (λe) Emission peak of CdSe QDs; (τe) Emission lifetime of CdSe QDs; (ke) The rate of electron transfer from CdSe QDs to PAA-g-Fe2S2; (kh) The rate of hole transfer from CdSe QDs to H2A; (ζ) Zeta potential; (TON) Turnover number of the systems; (tlifetime) The time that the systems could catalyze proton reduction.
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