Efficient Electron Transfer and Sensitizer Regeneration in Stable π-Extended Tetrathiafulvalene-Sensitized Solar Cells

Wenger, Sophie; Bouit, Pierre‐Antoine; Chen, Qianli; Teuscher, Joël; Censo, Davide Di; Humphry‐Baker, Robin; Moser, Jacques-E.; Delgado, Juan Luis; Martı́n, Nazario; Zakeeruddin, Shaik M.; Grätzel, Michaël

doi:10.1021/ja909291h

Cited by 201 publications

(126 citation statements)

References 31 publications

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“…[4][5][6][7] Indeed, in the past years this strategy has led to materials exhibiting novel photofunctional properties, such as fluorescence switches, metal ion sensors, photovoltaic cells, and nonlinear optics. [8][9][10][11] Following this strategy, we recently reported two TTF-based Cu I complexes, [Cu I (Binap)(TTF-TzPy)]BF 4 and [Cu I (Xantphos)(TTF-TzPy)]BF 4 , which exhibit interesting electrochemical and photophysical properties. 13 However, TTF-TzPy is a non-conjugated system with σ-bonded molecular bridge.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Properties of two CuI Complexes Involving Tetrathia-fulvalene-Fused Phenanthroline Ligand

Niu¹,

Wang²,

Chen³

et al. 2017

ACSi

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Section: Introductionmentioning

confidence: 99%

Synthesis and Properties of two CuI Complexes Involving Tetrathia-fulvalene-Fused Phenanthroline Ligand

Niu¹,

Wang²,

Chen³

et al. 2017

ACSi

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“…Tetrathiafulvalene is a strong π-electron donor which has attracted particular attention in the development of chemical sensors, 30 superconducting materials, 31 ferromagnets, 32 non-linear optic devices, 33 biofuel cell, 34 and recently in development of dye sensitized solar cells. 35 The aim of the present work is the development of a novel photoelectrochemical sensor based on indium tin oxide modified with anatase TiO 2 nanoparticles sensitized with bis(ethylenedithio)tetrathiafulvalene (BEDT-TTF/TiO 2 ) for adrenaline detection with visible light emitting diode (LED) light. The photoelectroanalytical sensor showed a wide linear range, good stability and selectivity to adrenaline.…”

Section: Introductionmentioning

confidence: 99%

Photoelectroanalytical Detection of Adrenaline Based on DNA and TiO2 Nanoparticles Sensitized with Bis(ethylenedithio)tetrathiafulvalene Exploiting LED Light

Santos¹,

Neto²,

Macena³

et al. 2017

J. Braz. Chem. Soc.

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In this study, a photoelectroanalytical sensor for determination of adrenaline based on deoxyribonucleic acid (DNA) and anatase titanium dioxide (TiO 2 ) nanoparticles sensitized with bis(ethylenedithio)tetrathiafulvalene (BEDT-TTF) was developed, which we henceforward call BEDT-TTF/DNA/TiO 2 /ITO. The photoelectroanalytical sensor showed high photocurrent to adrenaline under visible light emitting diode (LED) light irradiation in comparison to each component of the composite material. Under optimized conditions, the BEDT-TTF/DNA/TiO 2 /ITO sensor shows a linear response range from 10 nmol L -1 up to 100 µmol L -1 with a sensitivity of 8.1 nA L µmol -1 and limit of detection of 1 nmol L -1 for the detection of adrenaline. The photoelectrochemical sensor showed high photocurrent to adrenaline in comparison to photocurrent response to ascorbic acid and uric acid. The BEDT-TTF/DNA/TiO 2 /ITO photoelectrochemical sensor was successfully applied to urine samples, with recovery values between 96 and 106%. Keywords: adrenaline, photoelectrochemical sensor, visible LED light, deoxyribonucleic acid IntroductionAdrenaline, also known as epinephrine, is one of the most important message transfer compound in the mammalian central nervous system, which exist as an organic cation in the nervous tissue and the biological body fluid. 1 The level of adrenaline in the body affects a series of actions of the nervous system including the regulation of blood pressure, heart rate, lipolysis, immune response and glycogen metabolism. 2 In addition, adrenaline has been advocated during early cardiopulmonary resuscitation, early defibrillation and early advanced care in cardiac arrest for decades. 3 Therefore, the quantification of adrenaline in biological samples is of high interest nowadays. Urine represents one of the most easily attainable and, consequently, very common samples in adrenaline clinical analysis and diagnostics. The levels of adrenaline in biological fluids such as urine depends on the age and condition of the patient. 4 For healthy people, for example, the physiological concentration of adrenaline found in urine samples are in nanomolar level (22-109 nmol L -1 ). 5A number of analytical methodologies have been proposed for determination of adrenaline such as fluorimetric, 6 spectrophotometric, 7 enzymatic radioimmunoassay, 8 gas chromatography, 9 high performance liquid chromatography, 10 capillary electrophoresis 11 and electrochemical methods. [12][13][14][15] Despite the high number of analytical methods for adrenaline determination, most of them suffer from some disadvantages such as high cost, long analysis time, extensive sample pretreatment based on derivatization, extraction and purification as well as demands for highly trained users. The fluorometric and radioenzymatic assays are presently the most widely used techniques for the estimation of plasma, urine and tissue adrenaline. The fluorometric assay lacks specificity and sensitivity. The radioenzymatic assay is significantly more sensitive and specific...

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“…For several decades, tetrathiafulvalene (TTF) and its derivatives were extensively developed by scientists in photofunctional materials [1][2][3][4][5][6][7][8] because of their strongly electron-donating and attractive reversible redox properties. As a consequence, a large synthetic effort has also been devoted to the preparation of materials that exhibit synergy or coexistence between conductivity and luminescence.…”

Section: Introductionmentioning

confidence: 99%

New Iridium Complex Coordinated with Tetrathiafulvalene Substituted Triazole-pyridine Ligand: Synthesis, Photophysical and Electrochemical properties

Niu¹,

Xie²,

He³

et al. 2016

ACSi

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A new iridium(III) complex based on the triazole-pyridine ligand with tetrathiafulvalene unit, [Ir(ppy) 2 (L)]PF 6 (1), has been synthesized and structurally characterized. The absorption spectra, luminescent spectra and electrochemical behaviors of L and 1 have been investigated. Complex 1 is found to be emissive at room temperature with maxima at 481 and 510 nm. The broad and structured emission bands are suggested a mixing of 3 LC ( 3 π-π*) and 3 CT ( 3 MLCT) excited states. The influence of iridium ion coordination on the redox properties of the TTF has also been investigated by cyclic voltammetry.

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Efficient Electron Transfer and Sensitizer Regeneration in Stable π-Extended Tetrathiafulvalene-Sensitized Solar Cells

Cited by 201 publications

References 31 publications

Synthesis and Properties of two CuI Complexes Involving Tetrathia-fulvalene-Fused Phenanthroline Ligand

Synthesis and Properties of two CuI Complexes Involving Tetrathia-fulvalene-Fused Phenanthroline Ligand

Photoelectroanalytical Detection of Adrenaline Based on DNA and TiO2 Nanoparticles Sensitized with Bis(ethylenedithio)tetrathiafulvalene Exploiting LED Light

New Iridium Complex Coordinated with Tetrathiafulvalene Substituted Triazole-pyridine Ligand: Synthesis, Photophysical and Electrochemical properties

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