Table 6.
Photophysical and photochemical parameters of 31o–36o in solution.
| Compd. | λmax/nm (ε/104 M−1 cm−1) |
Conversion Yield (%) | Φoc | Φco | Φf | Solvent | Ref. |
|---|---|---|---|---|---|---|---|
| 31o | 300, 402 | 94 | - | - | 0.37 | THF | [41] |
| 32o | 478 (3.12); 509 (3.68) | - | 0.56 | 0.031 | - | toluene | [42] |
| 33o | 472 (10.2) | - | 0.06 | 0.0023 | 0.063 | toluene | [44] |
| 34o | 480 (9.37) | - | 0.242 | 0.067 | 0.52 | toluene | [45] |
| 35o | 454 (8.48) | - | 0.161 | 0.053 | 0.38 | toluene | [45] |
| 36o | 498 (8.60) | - | 0.093 | 0.058 | 0.45 | toluene | [45] |
λmax: absorption maximum; ε: molar absorption coefficient; Conversion yield: conversion ratio from open form to closed from at PSS state; Φoc: cyclization quantum yield; Φco: cycloreversion quantum yield; Φf: fluorescence quantum yield.