Donor/Acceptor Interactions in Self-Assembled Monolayers and Their Consequences on Interfacial Electron Transfer
作者:Eden J. Pacsial、Daniel Alexander、Robert J. Alvarado、Massimiliano Tomasulo、Françisco M. Raymo
DOI:10.1021/jp047964n
日期:2004.12.1
synthesized a TTF with an oligomethylene arm terminated by a thiol group and assembled monolayers of this compound on gold. We have observed that the cyclic voltammogram of the immobilized TTF donors varies significantly upon addition of benzyl viologen, tetracyanoquinodimethane (TCNQ), or tetracyanoethylene (TCNE) acceptors to the electrolyte solution. Indeed, the supramolecular association of the complementary
Synthesis and electrochemistry of a tetrathiafulvalene (TTF)21–glycol dendrimer: intradendrimer aggregation of TTF cation radicals
作者:Christian A. Christensen、Jan Becher、Christian A. Christensen、Leonid M. Goldenberg、Martin R. Bryce
DOI:10.1039/a707504i
日期:——
The convergent synthesis of a TTFâglycol dendrimer is reported: thin layer cyclic voltammetric studies on (TTF)21 system 11 show that all the TTF units undergo two single-electron oxidations to produce the 42+ redox state spectroelectrochemical studies establish that there are intradendrimer interactions between partially-oxidised TTF units.
Two linear oligo-TTFs were synthesised employing a stepwise
strategy involving two different thiolate protecting groups. These linear
TTFs were incorporated into donor–acceptor rotaxanes with the cyclic
acceptor, cyclobis(paraquat-p-phenylene). Moreover, a prototype rotaxane based on a bis(pyrrolo)-TTF
was prepared and studied.
Treatment of cyanoethylated tetrathiafulvalene-thiolates or cyanoethylated 1,3-dithiole-2-thione-4,5-dithiolate with one equiv. of caesium hydroxide hydrate selectively and in high yield produces the corresponding monocaesium salts, which can subsequently be alkylated.
Synthesis and electrochemistry of new tetrathiafulvalene (TTF) dendrimers:X-ray crystal structure of a tetrafunctionalised TTF core unit
作者:Changsheng Wang、Martin R. Bryce、Andrei S. Batsanov、Leonid M. Goldenberg、Judith A. K. Howard
DOI:10.1039/a607597e
日期:——
A new synthetic approach to tetrathiafulvalene (TTF) dendrimers is
reported. Tetrakis(4-chloromethylbenzylthio)tetrathiafulvalene7
is a functionalised core unit which reacts with four equivalents of the
thiolate ion generated from compound 16 to afford the
trisdeca-TTF derivative 3. Compound 3 is a shelf-stable
solid which has been characterised by elemental analysis, MALDI-TOF mass
spectrometry,
1
H NMR spectroscopy and solution
electrochemistry. Thin layer cyclic voltammetry studies on pentakis-TTF
and trisdeca-TTF derivatives 11 and 3 in dichloromethane
solution in the presence of 2,3-dichloronaphthoquinone as an internal
reference, show that all the TTF units undergo two single-electron
oxidations. The single crystal X-ray structure of compound 7 is
reported: the molecules have crystallographic C
i
symmetry and form chair-like stacks parallel to the crystallographic
y axis.