Life Science Center of Tsukuba Advanced Research Alliance, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan.
J Am Chem Soc. 2012 Oct 3;134(39):16103-6. doi: 10.1021/ja3055386. Epub 2012 Sep 24.
Electron donor-acceptor conjugates of paramagnetic endohedral metallofullerenes and π-extended tetrathiafulvalene (exTTF) were synthesized, characterized, and probed with respect to intramolecular electron transfer involving paramagnetic fullerenes. UV-vis-NIR absorption spectroscopy complemented by electrochemical measurements attested to weak electronic interactions between the electron donor, exTTF, and the electron acceptor, La@C(82), in the ground state. In the excited state, photoexcitation powers a fast intramolecular electron transfer to yield an ion and radical ion pair state consisting of one-electron-reduced La@C(82) and of one-electron-oxidized exTTF.
合成了具有顺磁内包金属富勒烯和π-扩展四硫富瓦烯（exTTF）的电子给体-受体轭合物，并对涉及顺磁富勒烯的分子内电子转移进行了表征和研究。紫外可见近红外吸收光谱与电化学测量相结合，证明在基态下电子给体 exTTF 和电子受体 La@C(82) 之间存在较弱的电子相互作用。在激发态下，光激发促使快速的分子内电子转移，生成一个离子和自由基离子对态，其中包含一个电子还原的 La@C(82) 和一个电子氧化的 exTTF。
