Table 1 Summary of photoisomerization rate constants for spiropyran, hydrazone, and diarylethene derivatives in solution and coordinatively-integrated in frameworks
Sample | Conditions | k, s−1 | Sample | Conditions | k, s−1 |
---|---|---|---|---|---|
1a | EtOH | 0.033(5) | 6b | DMF | 0.015(5) |
1a | toluene | 0.060(7) | UiO-67 + 6 | DMF | 0.029(3) |
1a | THF | 0.074(4) | UiO-67 + 6 | solvent-free | 0.026(2) |
1a | DMF | 0.14(2) | 7b | MeOH | 0.00060(7) |
2a | DMF | 0.036(2) | 8b | MeOH | 0.00060(8) |
2a | THF | 0.048(4) | 9b | toluene | 0.03(1) |
UiO-67 + 2 | DMF | 0.061(4) | 10 | solid state | 0.13(3) |
UiO-67 + 2 | solvent-free | 31.2(5) | 11 | solid state | 0.0337(5) |
3a | EtOH | 0.037(3) | 11c | DMF | 0.19(1) |
3a | toluene | 0.07(2) | UiO-67 + 11 | DMF | 0.32(2) |
3a | DMF | 0.08(1) | UiO-67 + 11 | solvent-free | 0.177(3) |
3a | CH3CN | 0.054(4) | 12 | solid state | 0.36(6) |
Zn2(3)(DBTD) | DMF | 0.054(7) | 12c | DMF | 0.037(3) |
Zn2(3)(DBTD) | solvent-free | 53(2) | 12c | EtOH | 0.005(1) |
4b | toluene | 0.0086(3) | 12c | toluene | 0.009(1) |
4b | DMF | 0.0074(3) | Zn2(12)(DBTD) | DMF | 0.0033(3) |
5b | DMF | 0.00484(1) | 13c | CH3CN | 0.010(6) |
5b | EtOH | 0.016(3) | UiO-67 + 2 + 5 | DMF | 0.084(3)d0.0004(1)e |
UiO-67 + 5 | DMF | 0.005(2) | UiO-67 + 2 + 5 | solvent-free | 55(2)d 0.00097(3)e |
UiO-67 + 5 | solvent-free | 0.013(4) |