CYCLODEXTRIN ADAMANTANECARBOXYLATE INCLUSION COMPLEXES - STUDIES OF THE VARIATION IN CAVITY SIZE
CYCLODEXTRIN ADAMANTANECARBOXYLATE INCLUSION COMPLEXES - STUDIES OF THE VARIATION IN CAVITY SIZE
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DOI：
10.1021/j100248a029
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发表时间：
1985-01-01
影响因子：
--
通讯作者：
EFTINK, MR
中科院分区：
文献类型：
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作者：
CROMWELL, WC;BYSTROM, K;EFTINK, MR
6-（2-羟基-5-甲基苯基）-i-三嗪的激发态和基态质子转移反应可以用图3所示的能态示意图来解释。(2)激发态分子内质子转移（fcpj）发生在三嗪（St）的分子内氢键结合的烯醇形式的激发单重态到酮式的激发单重态（Si），没有势垒。激发态质子转移反应的速率常数k1非常快（> 2 × 1011 s-1，可能是2 × 1012 s-1）。在500 nm附近的绿色发射具有大的斯托克斯位移（~ 10 × 103 cm-1），来自S/态。
The excited-state and ground-state proton-transfer reactions of 6-(2-hydroxy-5-methylphenyl)-i-triazines can beaccounted for by the schematic energy-state diagram as shown in Figure 3.(2) The excited-state intramolecular proton transfer (fcpj) occurs from the excited singletstate of the intramolecularly hydrogen-bonded enol form of the triazines (St) to the excited singlet state of the ketoform (S/) with no potential barrier. The rate constant for the excited-state proton-transfer reaction k^ is very fast (> 2 X 1011 s'1, probably 2 X 1012 s'1). The green emission at near 500 nm with the large Stokes shift (~ 10 X 103 cm" 1) arises from the S/state.