Table 1 Photophysical properties and HERs of various polymers

From: Main-chain engineering of polymer photocatalysts with hydrophilic non-conjugated segments for visible-light-driven hydrogen evolution

Polymer

λmax, abs (nm)a

Size (nm)b

HOMO (eV)c

LUMO (eV)d

Eg (eV)e

Lifetime (ns)f

HER 780 > λ > 380 nm (µmol h−1)g

HER 780 > λ > 380 nm (mmol h−1 g−1)g

PFBPO

410

471

−5.82

−3.13

2.69

0.85 ± 0.011

23.0 ± 1.85

4.60 ± 0.37

P-EG-5

410

654

−5.92

−3.18

2.74

0.87 ±  0.011

23.9 ± 2.60

4.78 ± 0.52

P-TEG-5

408

674

−5.91

−3.19

2.72

0.90 ±  0.012

25.8 ± 1.35

5.16 ± 0.27

P-HEG-5

414

686

−5.91

−3.16

2.75

0.95 ±  0.012

26.9 ± 1.55

5.38 ± 0.31

P-HEG-10

402

1129

−5.92

−3.16

2.76

1.02 ±  0.017

34.7 ± 3.45

6.94 ± 0.69

P-HEG-20

390

1576

−5.90

−3.20

2.70

1.07 ±  0.011

18.7 ± 1.80

3.74 ± 0.36

P-EA-5

402

957

−5.93

−3.20

2.73

0.93 ±  0.012

30.3 ± 3.05

6.06 ± 0.61

P-EA-10

396

1434

−5.91

−3.15

2.76

0.98 ±  0.011

19.4 ± 1.95

3.88 ± 0.39

  1. aDetermined by solid-state UV-vis diffuse reflectance spectroscopy.
  2. bDetermined by DLS in a solution mixture consisting of equal volumes of H2O, MeOH, and TEA.
  3. cDetermined by photoelectron spectroscopy.
  4. dDetermined by means of the equation ELUMO = EHOMO + Eg.
  5. eDetermined from Tauc plots.
  6. fDetermined by time-resolved fluorescence spectroscopy in a solution mixture consisting of equal volumes of H2O, MeOH, and TEA.
  7. gPhotocatalytic conditions: 5 mg of polymers dissolved in a 10 mL solution mixture consisting of equal volumes of H2O, MeOH, and TEA and irradiated by a simulated solar light source (300 W Xe lamp, AM 1.5, 1000 W m−2, 780 > λ > 380 nm).