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Statements

Subject Item
n2:RIV%2F61388963%3A_____%2F13%3A00392849%21RIV14-MSM-61388963
rdf:type
n7:Vysledek skos:Concept
dcterms:description
Short monodisperse oligo(para-phenyleneethynylene) (pOPE) units bearing laterally attached tetrathio-substituted tetrathiofulvalene (TTF) units have been synthesised from functionalised aromatic building blocks by using the Sonogashira cross-coupling methodology. The unusual redox properties of these TTF-pOPE conjugates were observed by employing electrochemical methods, such as cyclic voltammetry and exhaustive electrolysis. We found that formally one half of the TTF units in the pOPE monomer 1, dimer 2, and trimer 3 (with 2, 4, and 6 TTF units, respectively) are electrochemically silent during the first-step oxidation at 0.49 V. We propose the formation of persistent mixed-valence complexes from the TTF and TTF+center dot units present in an equal ratio. Such mixed-valence dyads (single or multiple in the partially oxidised 1-3) exhibit an unusual stability towards oxidation until the potential of the second oxidation at 0.84 V is achieved. This finding suggests that below this potential the oxidation of the respective mix-valence complexes is extremely slow. Short monodisperse oligo(para-phenyleneethynylene) (pOPE) units bearing laterally attached tetrathio-substituted tetrathiofulvalene (TTF) units have been synthesised from functionalised aromatic building blocks by using the Sonogashira cross-coupling methodology. The unusual redox properties of these TTF-pOPE conjugates were observed by employing electrochemical methods, such as cyclic voltammetry and exhaustive electrolysis. We found that formally one half of the TTF units in the pOPE monomer 1, dimer 2, and trimer 3 (with 2, 4, and 6 TTF units, respectively) are electrochemically silent during the first-step oxidation at 0.49 V. We propose the formation of persistent mixed-valence complexes from the TTF and TTF+center dot units present in an equal ratio. Such mixed-valence dyads (single or multiple in the partially oxidised 1-3) exhibit an unusual stability towards oxidation until the potential of the second oxidation at 0.84 V is achieved. This finding suggests that below this potential the oxidation of the respective mix-valence complexes is extremely slow.
dcterms:title
Tetrathiafulvalene-Oligo(para-phenyleneethynylene) Conjugates: Formation of Multiple Mixed-Valence Complexes upon Electrochemical Oxidation Tetrathiafulvalene-Oligo(para-phenyleneethynylene) Conjugates: Formation of Multiple Mixed-Valence Complexes upon Electrochemical Oxidation
skos:prefLabel
Tetrathiafulvalene-Oligo(para-phenyleneethynylene) Conjugates: Formation of Multiple Mixed-Valence Complexes upon Electrochemical Oxidation Tetrathiafulvalene-Oligo(para-phenyleneethynylene) Conjugates: Formation of Multiple Mixed-Valence Complexes upon Electrochemical Oxidation
skos:notation
RIV/61388963:_____/13:00392849!RIV14-MSM-61388963
n7:predkladatel
n8:ico%3A61388963
n3:aktivita
n18:I n18:P
n3:aktivity
I, P(7E09054), P(GA203/09/0705), P(GA203/09/1802), P(GAP207/10/2214), P(IAA400400802)
n3:cisloPeriodika
19
n3:dodaniDat
n9:2014
n3:domaciTvurceVysledku
n10:8935971 n10:3603652 n10:8624526 n10:2834057 n10:4128575 n10:3158012 n10:4875044 n10:3237907
n3:druhVysledku
n17:J
n3:duvernostUdaju
n5:S
n3:entitaPredkladatele
n13:predkladatel
n3:idSjednocenehoVysledku
110743
n3:idVysledku
RIV/61388963:_____/13:00392849
n3:jazykVysledku
n14:eng
n3:klicovaSlova
cross-coupling; donor-acceptor systems; tetrathiofulvalene; oligomers; electrochemistry
n3:klicoveSlovo
n12:donor-acceptor%20systems n12:cross-coupling n12:oligomers n12:tetrathiofulvalene n12:electrochemistry
n3:kodStatuVydavatele
DE - Spolková republika Německo
n3:kontrolniKodProRIV
[5B78AC056E0D]
n3:nazevZdroje
Chemistry - A European Journal
n3:obor
n15:CC
n3:pocetDomacichTvurcuVysledku
8
n3:pocetTvurcuVysledku
11
n3:projekt
n4:IAA400400802 n4:GA203%2F09%2F1802 n4:GA203%2F09%2F0705 n4:GAP207%2F10%2F2214 n4:7E09054
n3:rokUplatneniVysledku
n9:2013
n3:svazekPeriodika
19
n3:tvurceVysledku
Vacek Chocholoušová, Jana Bělohradský, Martin Fiedler, Jan Stará, Irena G. Hromadová, Magdaléna Starý, Ivo Lipnická, Šárka Pospíšil, Lubomír Pohl, Radek Kolivoška, Viliam Vacek, Jaroslav
n3:wos
000318364500039
s:issn
0947-6539
s:numberOfPages
14
n19:doi
10.1002/chem.201102868