Excited-state intermolecular proton transfer of the fireflys chromophore D -Luciferin

Erez Y.; Huppert D.

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Excited-state intermolecular proton transfer of the fireflys chromophore D -Luciferin

机译：萤火虫发色团D-荧光素的激发态分子内质子转移

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Steady-state absorption and emission as well as time-resolved emission spectroscopies were employed to study the photophysics and photochemistry of d-luciferin, the firefly active bioluminescent compound. In aqueous solution the electronically excited-state protonated d-luciferin compound undergoes an efficient process of proton transfer to the solvent, with a rate constant k _(PT) = 3.0 × 10~(10) s~(-1). We found a kinetic isotope effect of about 2.5 for this process. The deprotonated form of d-luciferin in the excited state recombines irreversibly with the geminate proton. Hence, the fluorescence decay of the deprotonated form is nonexponential, and the fluorescence quantum yield is low.

机译：稳态吸收和发射以及时间分辨发射光谱用于研究萤火虫活性生物发光化合物d-荧光素的光物理和光化学。在水溶液中，电子激发态质子化的d-萤光素化合物经历了质子转移到溶剂的有效过程，速率常数k _（PT）= 3.0×10〜（10）s〜（-1）。我们发现此过程的动力学同位素效应约为2.5。 d-萤光素的去质子形式在激发态与发芽质子不可逆地重组。因此，去质子化形式的荧光衰减是非指数的，并且荧光量子产率低。

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《The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory》 |2010年第31期|共8页
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Erez Y.; Huppert D.;
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1. Excited-state intermolecular proton transfer of the firefly's chromophore d-luciferin. 2. water-methanol mixtures [J] . Presiado I., Erez Y., Huppert D. The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory . 2010,第35期

机译：萤火虫的发色团d-荧光素的激发态分子间质子转移。 2.水-甲醇混合物
2. Excited-state intermolecular proton transfer of the fireflys chromophore D -Luciferin [J] . Erez Y., Huppert D. The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory . 2010,第31期

机译：萤火虫发色团D-荧光素的激发态分子内质子转移
3. Excited-state intermolecular proton transfer of firefly luciferin V. Direct proton transfer to fluoride and other mild bases [J] . Presiado I., Gepshtein R., Erez Y., The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory . 2011,第26期

机译：萤火虫荧光素V的激发态分子间质子转移。质子直接转移至氟化物和其他轻度碱
4. Caught in the act: Excited-state Proton Transfer to the solvent followed in real time by non-linear THz spectroscopy [C] . C. Hoberg, T. Ockelmann, J. Shee, International Conference on Infrared, Millimeter, and Terahertz Waves . 2020

机译：陷入该法：激发 - 状态质子转移到溶剂上，通过非线性THz光谱实时地实时
5. Excited-state dynamics of iron(II)-based charge-transfer chromophores [D] . Brown, Allison Michelle 2011

机译：铁（II）基电荷转移生色团的激发态动力学
6. Modulation of the Excited-State Proton Transfer Rateof d-luciferin in Mixed Reverse Micellar Systems [O] . Arindam Das, *, †, 2018

机译：激发态质子传递速率的调制荧光素在反胶束系统中的应用
7. Study on Properties of Excited-state Intermolecular Proton Transfer (ESPT) Reaction Dendrite Containing Benzidine Fragments of Organic Chromophore [O] . Xiaozhuan Qin, Xinchao Wang, Dandan Feng, 2019

机译：有机发色团苯并素碎片兴奋状态分子转移（ESPT）反应枝晶的性能研究
8. Ground- and Excited-State Proton Transfers in Reversed Micelles. Polarity Restrictions and Isotope Effects [R] . Politi, M. J., Brandt, O., Fendler, J. H. 1985

机译：反胶束中的基态和激发态质子转移。极性限制和同位素效应

Excited-state intermolecular proton transfer of the fireflys chromophore D -Luciferin

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