title: Ion-controlled on-off switch of electron transfer from tetrathiafulvalene calix[4]pyrroles to Li+@C60.
abstract: Binding of chloride anion to a tetrathiafulvalene calix[4]pyrrole (TTF-C4P) donor results in ET to Li(+)@C(60) to produce the radical pair (TTF-C4P(•+)/Li(+)@C(60)(•-)), the structure of which was characterized by X-ray crystallographic analysis. The addition of tetraethylammonium cation, which binds more effectively than Li(+)@C(60)(•-) as a guest within the TTF-C4P cavity, leads to electron back-transfer, restoring the initial oxidation states of the donor and acceptor pair.
authors: Department of Material and Life Science, Graduate School of Engineering, Osaka University, and ALCA, Japan Science and Technology, Suita, Osaka 565-0871, Japan. fukuzumi@chem.eng.osaka-u.ac.jp
authors: Shunichi
authors: S
authors: Fukuzumi
authors: Kei
authors: K
authors: Ohkubo
authors: Yuki
authors: Y
authors: Kawashima
authors: Dong Sub
authors: DS
authors: Kim
authors: Jung Su
authors: JS
authors: Park
authors: Atanu
authors: A
authors: Jana
authors: Vincent M
authors: VM
authors: Lynch
authors: Dongho
authors: D
authors: Kim
authors: Jonathan L
authors: JL
authors: Sessler
mesh_terms: D047250:Calixarenes / Q000737:chemistry*; D018360:Crystallography, X-Ray; D004579:Electron Transport; D037741:Fullerenes / Q000737:chemistry*; D006571:Heterocyclic Compounds / Q000737:chemistry*; D007477:Ions / Q000737:chemistry; D008094:Lithium / Q000737:chemistry*; D008958:Models, Molecular; D011166:Porphyrins / Q000737:chemistry*
chemical_list: D037741:Fullerenes; D006571:Heterocyclic Compounds; D007477:Ions; D011166:Porphyrins; C469811:calix(4)pyrrole; D047250:Calixarenes; D008094:Lithium; C063887:tetrathiafulvalene; C069837:fullerene C60