ONE-WAY Z-]E ISOMERIZATION AROUND THE DOUBLE-BOND OF N-METHOXY-1-(2-ANTHRYL) ETHANIMINE IN THE EXCITED TRIPLET-STATE - DIRECT OBSERVATION OF ONE-WAY ISOMERIZATION FROM Z-TRIPLET TO E-TRIPLET OF THE C=N BOND
T. Arai et al., ONE-WAY Z-]E ISOMERIZATION AROUND THE DOUBLE-BOND OF N-METHOXY-1-(2-ANTHRYL) ETHANIMINE IN THE EXCITED TRIPLET-STATE - DIRECT OBSERVATION OF ONE-WAY ISOMERIZATION FROM Z-TRIPLET TO E-TRIPLET OF THE C=N BOND, Chemical physics letters, 212(6), 1993, pp. 597-603
On direct as well as benzil-sensitized irradiation in degassed benzene
N-methoxy-1-(2-anthryl)ethanimine (I), ArC(CH3)=N-OCH3 (Ar: 2-anthryl
), underwent one-way Z-->E isomerization through a quantum chain proce
ss. The barrier to Z-->E isomerization of I in the excited triplet sta
te was determined by directly observing the change of T-T absorption s
pectra from the Z triplet to the E triplet. Based on these results the
potential energy surface of photoisomerization of I is discussed.