The Influence of Water and Oxygen on Stability of TCNQ Solution in Acetonitrile

Cehak, Andrzej; Chyla, A.; Radomska, M.; Radomski, R.

doi:10.1080/00268948508075812

Cited by 7 publications

(12 citation statements)

References 1 publication

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“…to a, a'-dicyano-p-toluoylcyanide. A similar attribution of the band at 20 830 cm-1, observed by Cehak et al, was given [30]; the last authors interpreted this band as a characteristic one for the final product of hydrolysis of TCNQ. In principle both attributions could be acceptable.…”

Section: Radiation Induced Resistance Changes -supporting

confidence: 77%

Electron-electron and electron-phonon interactions in irradiated N-methyl pyridinium derivatives with TCNQ studied by optical spectroscopy

Graja

S̀wietlik

1985

J. Phys. France

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Electron irradiation of the organic semiconductors of NMePy(TCNQ) 2 type produces defects which change their vibrational and electronic spectra. The spectral changes are described and discussed. The electron-phonon coupling constant changes are deduced; the defect concentration as well as their volume are calculated from spectral measurements. The role of electron-electron interactions are emphasized and we suggest, that the N-methyl pyridinium derivatives with TCNQ are Mott insulators

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Section: Radiation Induced Resistance Changes -supporting

confidence: 77%

Electron-electron and electron-phonon interactions in irradiated N-methyl pyridinium derivatives with TCNQ studied by optical spectroscopy

Graja

S̀wietlik

1985

J. Phys. France

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“…490 nm that is due to a decomposition product, namely, dicyanotolluilocyanide (DCTC − ), which is formed by the reaction of TCNQ − with trace water. 26,27 Similarly, a reduction in TCNQ 0 intensity is observed in [BMIM][BF 4 ] when a Cu substrate is introduced (red curve, Figure 3B) along with an increase in the formation of DCTC − as evidenced by the peak at ca. 485 nm.…”

Section: ■ Results and Discussionmentioning

confidence: 63%

“…There is also a feature at ca. 490 nm that is due to a decomposition product, namely, dicyanotolluilocyanide (DCTC – ), which is formed by the reaction of TCNQ – with trace water. , …”

Section: Resultsmentioning

confidence: 99%

Effect of Imidazolium-Based Ionic Liquids on the Nanoscale Morphology of CuTCNQ (TCNQ = 7,7,8,8-Tetracyanoquinodimethane) Metal–Organic Semiconductors

et al. 2012

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“…It has been well established that all neutral

{{{\rm {TCNQF}}}_{{\rm {n}}}^{{\rm {0}}}}

(n=0, 2, 4) species are very stable in MeCN [12a,b,13] . However, in aqueous media all slowly decompose to α,α‐dicyano‐p‐toluoylcyanide

{({{\rm {DCTC}}}^{{\rm {1-}}}}

) and fluoro derivatives, dicyano‐p‐toluoylcyanide

{({{\rm {DCTCF}}}_{{\rm {n}}}^{{\rm {1-}}}}

, n=2, 4), respectively, with HCN as the hydrolysis side product, see Figure (2).…”

Section: Resultsmentioning

confidence: 99%

Fluorine Substitution of TCNQ Alters the Redox‐Driven Catalytic Pathway for the Ferricyanide‐Thiosulfate Reaction

Alzubidi,

Bond,

Martin

2023

ChemPhysChem

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Mechanistic variation in catalysis through substituent‐based redox tuning is well established. Fluorination of TCNQ (TCNQ=tetracyanoquinodimethane) provides ~850 mV variation in the redox potentials of the and (n=0, 2, 4) processes. With , catalysis of the kinetically very slow ferrocyanide‐thiosulfate redox reaction in aqueous solution occurs via a mechanism in which the catalyst is reduced to when reacting with which is oxidised to . Subsequently, reacts with to form and reform the catalyst, in another thermodynamically favoured process. An analogous mechanism applies with as a catalyst. In contrast, since the reaction of with is thermodynamically unfavourable, an alternative mechanism is required to explain the catalytic activity observed in this non‐fluorinated system. Here, upon addition of , reduction of to occurs with concomitant oxidation of to , which then acts as the catalyst for oxidation. Thermodynamic data explain the observed differences in the catalytic mechanisms. (n=0, 4) also act as catalysts for the ferricyanide‐thiosulfate reaction in aqueous solution. The present study shows that homogeneous pathways are available following addition of these dissolved materials. Previously, these (n=0, 4) coordination polymers have been regarded as insoluble in water and proposed as heterogeneous catalysts for the ferricyanide‐thiosulfate reaction. Details and mechanistic differences were established using UV‐visible spectrophotometry and cyclic voltammetry.

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The Influence of Water and Oxygen on Stability of TCNQ Solution in Acetonitrile

Cited by 7 publications

References 1 publication

Electron-electron and electron-phonon interactions in irradiated N-methyl pyridinium derivatives with TCNQ studied by optical spectroscopy

Electron-electron and electron-phonon interactions in irradiated N-methyl pyridinium derivatives with TCNQ studied by optical spectroscopy

Effect of Imidazolium-Based Ionic Liquids on the Nanoscale Morphology of CuTCNQ (TCNQ = 7,7,8,8-Tetracyanoquinodimethane) Metal–Organic Semiconductors

Fluorine Substitution of TCNQ Alters the Redox‐Driven Catalytic Pathway for the Ferricyanide‐Thiosulfate Reaction

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