The photoexcited triplet state of free-base porphycene: a time-resolved EPR and electron spin echo investigation

Christopher W. M. Kay; Gordon Elger; Klaus Mobius

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The photoexcited triplet state of free-base porphycene: a time-resolved EPR and electron spin echo investigation

机译：游离碱卟啉的光激发三重态：时间分辨的EPR和电子自旋回波研究

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The photoexcited triplet state of free-base porphycene randomly oriented in a glassy toluene matrix has been investigated by time-resolved electron paramagnetic resonance and electron spin echo spectroscopy over the temperature range 4-100 K. Spectral broadening and anisotropic relaxation are both observed as the temperature is raised, demonstrating the complementary use of these techniques. It is concluded that two triplet states are present in the EPR spectra: only one at 4 K, and the other becoming populated at higher temperatures. This behaviour is explained in terms of intramolecular N-H tautomerism in the porphycene macrocycle. The N-H tautomerism is estimated to have a maximum rate of 7 * 10~8 s~(-1) at 100 K.

机译：通过时间分辨电子顺磁共振和电子自旋回波光谱在4-100 K的温度范围内研究了无规卟啉在玻璃状甲苯基质中随机取向的光激发三重态。温度升高，证明了这些技术的互补使用。结论是，EPR光谱中存在两个三重态：一个处于4 K，另一个处于较高温度。用卟啉大环中的分子内N-H互变异构现象来解释这种行为。估计N-H互变异构在100 K时的最大速率为7 * 10〜8 s〜（-1）。

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《Physical chemistry chemical physics: PCCP》 |1999年第17期|共4页
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Christopher W. M. Kay; Gordon Elger; Klaus Mobius;
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正文语种 eng
中图分类物理化学（理论化学）、化学物理学;物理学;
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1. The photoexcited triplet state of free-base porphycene: a time-resolved EPR and electron spin echo investigation [J] . Christopher W. M. Kay, Gordon Elger, Klaus Mobius Physical chemistry chemical physics: PCCP . 1999,第17期

机译：游离碱卟啉的光激发三重态：时间分辨的EPR和电子自旋回波研究
2. A TIME-RESOLVED ELECTRON NUCLEAR DOUBLE RESONANCE (ENDOR) STUDY OF THE PHOTOEXCITED TRIPLET STATE OF FREE-BASE TETRAPHENYLPORPHYRIN [J] . Kay CWM., Mobius K., Divalentin M. Solar Energy Materials and Solar Cells: An International Journal Devoted to Photovoltaic, Photothermal, and Photochemical Solar Energy Conversion . 1995,第1a4期

机译：游离碱四苯酚卟啉的光激发三重态的时间分辨电子核双共振（Endor）研究
3. Time-Resolved EPR Study on the Photoexcited Triplet State of the Electron?Donor?Acceptor Complex Formed in the System of fac- Tris[2-(4-octyl-phenyl) pyridine] Iridium(III) and Tetracene [J] . Fu Zhebin, Yoshioka Shuhei, Murai Hisao The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory . 2014,第1期

机译：在fac-Tris [2-（4-辛基-苯基）吡啶]铱（III）和四trace烷体系中形成的电子-供体受体复合物的光激发三重态的时间分辨EPR研究
4. Electron Spin Echo Investigation of Photoexcited Triplet State of Fullerene C_(60) [C] . M. N. Uvarov, L. V. Kulik, M. A. Bizin Asia-Pacific EPR/ESR Symposium . 2006

机译：富勒烯C_（60）的光孔三重态态的电子旋转回声调查
5. PART I: ELECTRON PARAMAGNETIC RESONANCE STUDIES OF GADOLINIUM CATION IN SINGLE CRYSTALS. PART II: AN EPR INVESTIGATION OF DEUTERIUM ISOTOPE EFFECTS ON THE ZERO-FIELD SPLITTINGS OF OPTICALLY EXCITED TRIPLET MOLECULES IN SINGLE CRYSTALS AT 77 K. [D] . THORSELL, DAVID LINDEN. 1971

机译：第一部分：单晶中G阳离子的电子顺磁共振研究。第二部分：在77 K时，氘同位素对单晶体中光学激发三重态分子零场裂变的EPR研究。
6. Photoexcited State Properties of H2-Porphyrin/C60-Based Rotaxanes as Studied by Time-Resolved EPR Spectroscopy [O] . Manuela Jakob, Alexander Berg, Haim Levanon, -1

机译：基于H2-porylin / C60的轮烷烷的光孔透明状态属性如时间分辨的EPR光谱研究
7. Comprehensive investigation of the triplet state electronic structure of free-base 5,10,15,20-tetrakis(4-sulfonatophenyl)porphyrin by a combined advanced EPR and theoretical approach [O] . Antonio Barbon, Maria Giulia Dal Farra, Susanna Ciuti, 2020

机译：通过组合先进的EPR和理论方法综合研究自由基5,10,15,20-四（4-磺酰基）卟啉的自由基5,10,15,20-四（4-磺酰基）卟啉的全面调查
8. Investigations on Resolution Enhancement in EPR by Means of Electron Spin Echoes [R] . Merks, R. P. J. 1979

机译：利用电子自旋回波研究EpR中分辨率的增强

The photoexcited triplet state of free-base porphycene: a time-resolved EPR and electron spin echo investigation

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