| 释义 |
intersystem, a.|ɪntəˈsɪstɪm, -əm|
[f. inter- 5 a + system n.]
Existing between systems; spec. in Physical Chem., between quantized systems or states of different multiplicity. intersystem crossing, the radiationless transition of an excited molecule to a state of different multiplicity.
1915Astrophysical Jrnl. XLI. 326 At the bottom of the table there is a section devoted to ‘inter-system’ series. These..are combinations between the triplet and single-line series. 1935Condon & Shortley Theory Atomic Spectra ix. 237 Intersystem combinations are forbidden. 1947Chem. Rev. XLI. 410 The mechanism of excitation of the triplet state..involves an intersystem ‘crossing’ of potential curves for the 1Γ* and 3Γ states. 1951Discussions Faraday Soc. IX. 15 Intersystem crossing is the spin-orbit-coupling-dependent internal conversion. 1965Jrnl. Chem. Physics XLIII. 2132/1 The absolute rate of intersystem crossing by excited singlets of triphenylene must be a couple of orders of magnitude faster than the same process in naphthalene. 1978P. W. Atkins Physical Chem. xviii. 596 Singlet to triplet switching is called intersystem crossing. |