Table 5.
Summary of photochemical properties of the compounds.
| Compounds | TADF property | The last-observed transient species (fs-TA) | The lowest-lying transient species (ns-TA) | |||
|
|
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| HEX | ACN | HEX | ACN | HEX | ACN | |
|
| ||||||
| NI-PTZ-F | yes | –a | 3CS, 3LE | 3CS | 3CS, 3LE | 3CS |
| NI-PTZ-Ph | yes | –a | –b | –b | 3CS, 3LE | 3CS |
| NI-PTZ-CH 3 | yes | –a | –b | –b | 3CS, 3LE | 3CS |
| NI-PTZ-OCH 3 | yes | –a | –b | –b | 3CS, 3LE | 3CS |
| NI-PTZ-C 5 | yes | –a | –b | –b | 3CS, 3LE | 3CS |
| NI-PTZ-F-O | no | no | –a | 3LE | 3LE | 3LE |
| NI-PTZ-Ph-O | no | no | –b | –b | 3LE | 3LE |
| NI-PTZ-C 5 -O | no | no | –b | –b | 3LE | 3LE |
aNot observed; bnot measured.