Chloride anion controlled molecular "Switching".: Binding of 2,5,7-trinitro-9-dicyanomethylenefluorene-C60 by tetrathiafulvalene calix[4]pyrrole and photophysical generation of two different charge-separated states

被引：77

作者：

Nielsen, Kent A. ^{[2
]}

Sarova, Ginka H. ^{[3
,4
]}

Martin-Gomis, Luis ^{[5
]}

Fernandez-Lazaro, Fernando ^{[5
]}

Stein, Paul C. ^{[2
]}

Sanguinet, Lionel ^{[6
]}

Levillain, Eric ^{[6
]}

Sessler, Jonathan L. ^{[1
]}

Guldi, Dirk M. ^{[3
,4
]}

Sastre-Santos, Angela ^{[5
]}

Jeppesen, Jan O. ^{[2
]}

机构：

[1] Univ Texas Austin, Dept Chem & Biochem, Austin, TX 78712 USA

[2] Univ So Denmark, Dept Chem & Phys, DK-5230 Odense M, Denmark

[3] Univ Erlangen Nurnberg, Dept Chem & Pharm, D-91058 Erlangen, Germany

[4] Univ Erlangen Nurnberg, ICMM, D-91058 Erlangen, Germany

[5] Univ Miguel Hernandez, Inst Biogenieria, Div Quim Organ, Elche 03202, Spain

[6] Univ Angers, CNRS, UMR 6200, F-49045 Angers, France

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2008年 / 130卷 / 02期

关键词：

D O I：

10.1021/ja0772243

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The binding of the snake-like trinitrodicyanomethylenefluorene-C-60 derivative (TNDCF-C-60) to the dynamic receptor, tetrathiafulvalene calix[4] pyrrole (TTF-calix[4]pyrrole), may be controlled via the use of a chloride anion as an external trigger. Whereas, in the absence of a chloride anion, the TNDCF "tail" of the trinitrodicyanomethylenefluorene-C-60 substrate binds to the TTF-calix[4]pyrrole in a 2:1 (substrate/receptor) stoichiometry in CH2Cl2 solution, addition of a chloride anion (yellow) leads the TNDCF tail to be displaced in favor of a bound C-60 "head", a process that leads to the formation of a complex with overall 1:2:2 substrate/receptor/chloride anion stoichiometry. These chemical switching events are reflected in easy-to-visualize color changes, as well as in the production of two different kinds of change-seperated states following selective femtosecond photoexcitation.

引用

页码：460 / +

页数：4

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