| 释义 |
photoisomer Chem.|ˌfəʊtəʊˈaɪsəmə(r)|
[f. photo- 1 + isomer.]
An isomer formed by irradiation of a different, often more stable, form of a compound.
1960Jrnl. Amer. Chem. Soc. LXXXII. 3642/2 Colchicine..on prolonged exposure to sunlight gave three photoisomers. 1965Seliger & McElroy Light v. 307 The temperature..of the solution affected the stability of the various photoisomers that were formed upon initial irradiation of the room-temperature stable material. 1973Tetrahedron XXIX. 3869/1 This new photoisomer is formed from heptachlor epoxide exposed to sunlight on bean leaves only in the presence of a photosensitizer.
Hence ˌphotoisoˈmeric a., of or pertaining to a photoisomer or photoisomers; ˌphotoiˈsomerism, the fact of being or having a photoisomer.
1955Jrnl. Chem. Physics XXIII. 1367/1 The final photoisomeric equilibrium was always independent of the isomeric composition before irradiation. 1965Seliger & McElroy Light ii. 144 The photoisomerism of 11-cis retinene. |