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Kiemes A, Serrano Navacerrada ME, Kim E, Randall K, Simmons C, Rojo Gonzalez L, Petrinovic MM, Lythgoe DJ, Rotaru D, Di Censo D, Hirschler L, Barbier EL, Vernon AC, Stone JM, Davies C, Cash D, Modinos G. Erbb4 Deletion From Inhibitory Interneurons Causes Psychosis-Relevant Neuroimaging Phenotypes. Schizophr Bull 2023; 49:569-580. [PMID: 36573631 PMCID: PMC10154722 DOI: 10.1093/schbul/sbac192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
BACKGROUND AND HYPOTHESIS Converging lines of evidence suggest that dysfunction of cortical GABAergic inhibitory interneurons is a core feature of psychosis. This dysfunction is thought to underlie neuroimaging abnormalities commonly found in patients with psychosis, particularly in the hippocampus. These include increases in resting cerebral blood flow (CBF) and glutamatergic metabolite levels, and decreases in ligand binding to GABAA α5 receptors and to the synaptic density marker synaptic vesicle glycoprotein 2A (SV2A). However, direct links between inhibitory interneuron dysfunction and these neuroimaging readouts are yet to be established. Conditional deletion of a schizophrenia susceptibility gene, the tyrosine kinase receptor Erbb4, from cortical and hippocampal inhibitory interneurons leads to synaptic defects, and behavioral and cognitive phenotypes relevant to psychosis in mice. STUDY DESIGN Here, we investigated how this inhibitory interneuron disruption affects hippocampal in vivo neuroimaging readouts. Adult Erbb4 conditional mutant mice (Lhx6-Cre;Erbb4F/F, n = 12) and their wild-type littermates (Erbb4F/F, n = 12) were scanned in a 9.4T magnetic resonance scanner to quantify CBF and glutamatergic metabolite levels (glutamine, glutamate, GABA). Subsequently, we assessed GABAA receptors and SV2A density using quantitative autoradiography. RESULTS Erbb4 mutant mice showed significantly elevated ventral hippccampus CBF and glutamine levels, and decreased SV2A density across hippocampus sub-regions compared to wild-type littermates. No significant GABAA receptor density differences were identified. CONCLUSIONS These findings demonstrate that specific disruption of cortical inhibitory interneurons in mice recapitulate some of the key neuroimaging findings in patients with psychosis, and link inhibitory interneuron deficits to non-invasive measures of brain function and neurochemistry that can be used across species.
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Affiliation(s)
- Amanda Kiemes
- Department of Psychosis Studies, Institute of Psychiatry, Psychology, and Neuroscience, King’s College London, London, UK
| | - Maria Elisa Serrano Navacerrada
- Department of Neuroimaging, School of Neuroscience, Institute of Psychiatry, Psychology, and Neuroscience, King’s College London, London, UK
| | - Eugene Kim
- Department of Neuroimaging, School of Neuroscience, Institute of Psychiatry, Psychology, and Neuroscience, King’s College London, London, UK
| | - Karen Randall
- Department of Neuroimaging, School of Neuroscience, Institute of Psychiatry, Psychology, and Neuroscience, King’s College London, London, UK
| | - Camilla Simmons
- Department of Neuroimaging, School of Neuroscience, Institute of Psychiatry, Psychology, and Neuroscience, King’s College London, London, UK
| | - Loreto Rojo Gonzalez
- Department of Neuroimaging, School of Neuroscience, Institute of Psychiatry, Psychology, and Neuroscience, King’s College London, London, UK
| | - Marija-Magdalena Petrinovic
- MRC Centre for Neurodevelopmental Disorders, King’s College London, London, UK
- Department of Forensic and Neurodevelopmental Science, Institute of Psychiatry, Psychology, and Neuroscience, King’s College London, London, UK
| | - David J Lythgoe
- Department of Neuroimaging, School of Neuroscience, Institute of Psychiatry, Psychology, and Neuroscience, King’s College London, London, UK
| | - Diana Rotaru
- Department of Neuroimaging, School of Neuroscience, Institute of Psychiatry, Psychology, and Neuroscience, King’s College London, London, UK
| | - Davide Di Censo
- Department of Neuroimaging, School of Neuroscience, Institute of Psychiatry, Psychology, and Neuroscience, King’s College London, London, UK
- Department of Psychology, University of Cambridge, Cambridge, UK
| | - Lydiane Hirschler
- C.J. Gorter Center for High Field MRI, Department of Radiology, Leiden University Medical Center, Leiden, The Netherlands
- Univ. Grenoble Alpes, Inserm, U1216, Grenoble Institut Neurosciences, Grenoble, France
| | - Emmanuel L Barbier
- Univ. Grenoble Alpes, Inserm, U1216, Grenoble Institut Neurosciences, Grenoble, France
| | - Anthony C Vernon
- MRC Centre for Neurodevelopmental Disorders, King’s College London, London, UK
- Department of Basic and Clinical Neuroscience, School of Neuroscience, Institute of Psychiatry, Psychology, and Neuroscience, King’s College London, London, UK
| | - James M Stone
- Brighton and Sussex Medical School, University of Sussex, Brighton, UK
| | - Cathy Davies
- Department of Psychosis Studies, Institute of Psychiatry, Psychology, and Neuroscience, King’s College London, London, UK
| | - Diana Cash
- Department of Neuroimaging, School of Neuroscience, Institute of Psychiatry, Psychology, and Neuroscience, King’s College London, London, UK
| | - Gemma Modinos
- Department of Psychosis Studies, Institute of Psychiatry, Psychology, and Neuroscience, King’s College London, London, UK
- Department of Neuroimaging, School of Neuroscience, Institute of Psychiatry, Psychology, and Neuroscience, King’s College London, London, UK
- MRC Centre for Neurodevelopmental Disorders, King’s College London, London, UK
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Rosa I, Di Censo D, Ranieri B, Di Giovanni G, Scarnati E, Alecci M, Galante A, Florio TM. Comparison between Tail Suspension Swing Test and Standard Rotation Test in Revealing Early Motor Behavioral Changes and Neurodegeneration in 6-OHDA Hemiparkinsonian Rats. Int J Mol Sci 2020; 21:ijms21082874. [PMID: 32326015 PMCID: PMC7216013 DOI: 10.3390/ijms21082874] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Revised: 04/07/2020] [Accepted: 04/16/2020] [Indexed: 12/25/2022] Open
Abstract
The unilateral 6-hydroxydopamine (6-OHDA) model of Parkinson’s disease (PD) is one of the most commonly used in rodents. The anatomical, metabolic, and behavioral changes that occur after severe and stable 6-OHDA lesions have been extensively studied. Here, we investigated whether early motor behavioral deficits can be observed in the first week after the injection of 6-OHDA into the right substantia nigra pars compacta (SNc), and if they were indicative of the severity of the dopaminergic (DAergic) lesion in the SNc and the striatum at different time-points (day 1, 3, 5, 7, 14, 21). With this aim, we used our newly modified tail suspension swing test (TSST), the standard rotation test (RT), and immunohistochemical staining for tyrosine hydroxylase (TH). The TSST, but not the standard RT, revealed a spontaneous motor bias for the 6-OHDA-lesioned rats from the day 1 post-surgery. Both tests detected the motor asymmetry induced by (single and repeated) apomorphine (APO) challenges that correlated, in the first week, with the DAergic neuronal degeneration. The described TSST is fast and easy to perform, and in the drug-free condition is useful for the functional assessment of early motor asymmetry appearing after the 6-OHDA-lesion in the SNc, without the confounding effect of APO challenges.
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Affiliation(s)
- Ilaria Rosa
- Department of Life, Health and Environmental Sciences (MESVA), University of L’Aquila, 67100 L’Aquila, Italy; (D.D.C.); (B.R.); (M.A.); (A.G.); (T.M.F.)
- Correspondence: (I.R.); (G.D.G.)
| | - Davide Di Censo
- Department of Life, Health and Environmental Sciences (MESVA), University of L’Aquila, 67100 L’Aquila, Italy; (D.D.C.); (B.R.); (M.A.); (A.G.); (T.M.F.)
| | - Brigida Ranieri
- Department of Life, Health and Environmental Sciences (MESVA), University of L’Aquila, 67100 L’Aquila, Italy; (D.D.C.); (B.R.); (M.A.); (A.G.); (T.M.F.)
| | - Giuseppe Di Giovanni
- Department of Life, Health and Environmental Sciences (MESVA), University of L’Aquila, 67100 L’Aquila, Italy; (D.D.C.); (B.R.); (M.A.); (A.G.); (T.M.F.)
- Laboratory of Neurophysiology, Department of Physiology and Biochemistry, Faculty of Medicine and Surgery, University of Malta, Msida MSD 2080, Malta
- Correspondence: (I.R.); (G.D.G.)
| | - Eugenio Scarnati
- Department of Biotechnological and Applied Clinical Sciences (DISCAB), University of L’Aquila, 67100 L’Aquila, Italy;
| | - Marcello Alecci
- Department of Life, Health and Environmental Sciences (MESVA), University of L’Aquila, 67100 L’Aquila, Italy; (D.D.C.); (B.R.); (M.A.); (A.G.); (T.M.F.)
- National Institute of Nuclear Physics, Gran Sasso National Laboratories, Assergi, 67100 L’Aquila, Italy
- SPIN-CNR Institute, Department of Physical and Chemical Sciences, 67100 L’Aquila, Italy
| | - Angelo Galante
- Department of Life, Health and Environmental Sciences (MESVA), University of L’Aquila, 67100 L’Aquila, Italy; (D.D.C.); (B.R.); (M.A.); (A.G.); (T.M.F.)
- National Institute of Nuclear Physics, Gran Sasso National Laboratories, Assergi, 67100 L’Aquila, Italy
- SPIN-CNR Institute, Department of Physical and Chemical Sciences, 67100 L’Aquila, Italy
| | - Tiziana Marilena Florio
- Department of Life, Health and Environmental Sciences (MESVA), University of L’Aquila, 67100 L’Aquila, Italy; (D.D.C.); (B.R.); (M.A.); (A.G.); (T.M.F.)
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Di Lorenzo T, Di Cicco M, Di Censo D, Galante A, Boscaro F, Messana G, Paola Galassi DM. Environmental risk assessment of propranolol in the groundwater bodies of Europe. Environ Pollut 2019; 255:113189. [PMID: 31542673 DOI: 10.1016/j.envpol.2019.113189] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Revised: 09/05/2019] [Accepted: 09/05/2019] [Indexed: 06/10/2023]
Abstract
A growing concern for contamination due to pharmaceutical compounds in groundwater is expanding globally. The β-blocker propranolol is a β-adrenoceptors antagonist commonly detected in European groundwater bodies. The effect of propranolol on stygobiotic species (obligate groundwater dweller species) is compelling in the framework of environmental risk assessment (ERA) of groundwater ecosystems. In fact, in Europe, ERA procedures for pharmaceuticals in groundwater are based on data obtained with surrogate surface water species. The use of surrogates has aroused some concern in the scientific arena since the first ERA guideline for groundwater was issued. We performed an ecotoxicological and a behavioural experiment with the stygobiotic crustacean species Diacyclops belgicus (Copepopda) to estimate a realistic value of the Predicted No Effect Concentration (PNEC) of propranolol for groundwater ecosystems and we compared this value with the PNEC estimated based on EU ERA procedures. The results of this study showed that i) presently, propranolol does not pose a risk to groundwater bodies in Europe at the concentrations shown in this study and ii) the PNEC of propranolol estimated through the EU ERA procedures is very conservative and allows to adequately protect these delicate ecosystems and their dwelling fauna. The methodological approach and the results of this study represent a first contribution to the improvement of ERA of groundwater ecosystems.
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Affiliation(s)
- Tiziana Di Lorenzo
- Research Institute on Terrestrial Ecosystems (IRET-CNR), Via Madonna del Piano 10, 50019, Sesto Fiorentino, Florence, Italy.
| | - Mattia Di Cicco
- Department of Life, Health and Environmental Sciences, University of L'Aquila, Via Vetoio 1, Coppito, 67100, 10 L'Aquila, Italy
| | - Davide Di Censo
- Department of Life, Health and Environmental Sciences, University of L'Aquila, Via Vetoio 1, Coppito, 67100, 10 L'Aquila, Italy
| | - Angelo Galante
- Department of Life, Health and Environmental Sciences, University of L'Aquila, Via Vetoio 1, Coppito, 67100, 10 L'Aquila, Italy; Institute for superconductors, oxides and other innovative materials and devices, National Research Council (CNR-SPIN), Via Vetoio 1, 67100 L'Aquila, Italy; Istituto Nazionale di Fisica Nucleare (INFN), Laboratori Nazionali del Gran Sasso, Assergi, 67100, L'Aquila, Italy
| | - Francesca Boscaro
- Mass Spectrometry Center, University of Florence, Via U. Schiff 6, 50019, Sesto Fiorentino, Italy
| | - Giuseppe Messana
- Research Institute on Terrestrial Ecosystems (IRET-CNR), Via Madonna del Piano 10, 50019, Sesto Fiorentino, Florence, Italy
| | - Diana Maria Paola Galassi
- Department of Life, Health and Environmental Sciences, University of L'Aquila, Via Vetoio 1, Coppito, 67100, 10 L'Aquila, Italy
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Florio TM, Scarnati E, Rosa I, Di Censo D, Ranieri B, Cimini A, Galante A, Alecci M. The Basal Ganglia: More than just a switching device. CNS Neurosci Ther 2018; 24:677-684. [PMID: 29879292 DOI: 10.1111/cns.12987] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Revised: 05/02/2018] [Accepted: 05/04/2018] [Indexed: 12/12/2022] Open
Abstract
The basal ganglia consist of a variety of subcortical nuclei engaged in motor control and executive functions, such as motor learning, behavioral control, and emotion. The striatum, a major basal ganglia component, is particularly useful for cognitive planning of purposive motor acts owing to its structural features and the neuronal circuitry established with the cerebral cortex. Recent data indicate emergent functions played by the striatum. Indeed, cortico-striatal circuits carrying motor information are paralleled by circuits originating from associative and limbic territories, which are functionally integrated in the striatum. Functional integration between brain areas is achieved through patterns of coherent activity. Coherence belonging to cortico-basal ganglia circuits is also present in Parkinson's disease patients. Excessive synchronization occurring in this pathology is reduced by dopaminergic therapies. The mechanisms through which the dopaminergic effects may be addressed are the object of several ongoing investigations. Overall, the bulk of data reported in recent years has provided new vistas concerning basal ganglia role in the organization and control of movement and behavior, both in physiological and pathological conditions. In this review, basal ganglia functions involved in the organization of main movement categories and behaviors are critically discussed. Comparatively, the multiplicity of Parkinson's disease symptomatology is also revised.
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Affiliation(s)
- Tiziana Marilena Florio
- Department of Life, Health and Environmental Sciences, University of L'Aquila, L'Aquila, Italy
| | - Eugenio Scarnati
- Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, L'Aquila, Italy
| | - Ilaria Rosa
- Department of Life, Health and Environmental Sciences, University of L'Aquila, L'Aquila, Italy
| | - Davide Di Censo
- Department of Life, Health and Environmental Sciences, University of L'Aquila, L'Aquila, Italy
| | - Brigida Ranieri
- Department of Life, Health and Environmental Sciences, University of L'Aquila, L'Aquila, Italy
| | - Annamaria Cimini
- Department of Life, Health and Environmental Sciences, University of L'Aquila, L'Aquila, Italy.,Sbarro Institute for Cancer Research and Molecular Medicine, Department of Biology, Temple University, Philadelphia, PA, USA
| | - Angelo Galante
- Department of Life, Health and Environmental Sciences, University of L'Aquila, L'Aquila, Italy.,Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Gran Sasso, L'Aquila, Italy.,Istituto SPIN-CNR, c/o Dipartimento di Scienze Fisiche e Chimiche, L'Aquila, Italy
| | - Marcello Alecci
- Department of Life, Health and Environmental Sciences, University of L'Aquila, L'Aquila, Italy.,Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Gran Sasso, L'Aquila, Italy.,Istituto SPIN-CNR, c/o Dipartimento di Scienze Fisiche e Chimiche, L'Aquila, Italy
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Barolo C, Yum JH, Artuso E, Barbero N, Di Censo D, Lobello MG, Fantacci S, De Angelis F, Grätzel M, Nazeeruddin MK, Viscardi G. A simple synthetic route to obtain pure trans-ruthenium(II) complexes for dye-sensitized solar cell applications. ChemSusChem 2013; 6:2170-2180. [PMID: 23926052 DOI: 10.1002/cssc.201200973] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2012] [Revised: 04/07/2013] [Indexed: 06/02/2023]
Abstract
We report a facile synthetic route to obtain functionalized quaterpyridine ligand and its trans-dithiocyanato ruthenium complex, based on a microwave-assisted procedure. The ruthenium complex has been purified using a silica chromatographic column by protecting carboxylic acid groups as iso-butyl ester, which are subsequently hydrolyzed. The highly pure complex exhibits panchromatic response throughout the visible region. DFT/time-dependent DFT calculations have been performed on the ruthenium complex in solution and adsorbed onto TiO2 to analyze relative electronic and optical properties. The ruthenium complex endowed with the functionalized quaterpyridine ligand was used as a sensitizer in dye-sensitized solar cell yielding a short-circuit photocurrent density of more than 19 mA cm(-2) with a broad incident photon to current conversion efficiency spectra ranging from 400 to 900 nm, exceeding 80 % at 700 nm.
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Affiliation(s)
- Claudia Barolo
- Dipartimento di Chimica, NIS Centre of Excellence, Università di Torino, Via Pietro Giuria 7, 10125, Torino (Italy), Fax: (+39) 011 670 7591.
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Park J, Barolo C, Sauvage F, Barbero N, Benzi C, Quagliotto P, Coluccia S, Di Censo D, Grätzel M, Nazeeruddin MK, Viscardi G. Symmetric vs. asymmetric squaraines as photosensitisers in mesoscopic injection solar cells: a structure–property relationship study. Chem Commun (Camb) 2012; 48:2782-4. [DOI: 10.1039/c2cc17187b] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Kessler F, Costa RD, Di Censo D, Scopelliti R, Ortí E, Bolink HJ, Meier S, Sarfert W, Grätzel M, Nazeeruddin MK, Baranoff E. Near-UV to red-emitting charged bis-cyclometallated iridium(iii) complexes for light-emitting electrochemical cells. Dalton Trans 2012; 41:180-91. [DOI: 10.1039/c1dt10698h] [Citation(s) in RCA: 113] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Holcombe TW, Yum JH, Yoon J, Gao P, Marszalek M, Censo DD, Rakstys K, Nazeeruddin MK, Graetzel M. A structural study of DPP-based sensitizers for DSC applications. Chem Commun (Camb) 2012; 48:10724-6. [DOI: 10.1039/c2cc35125k] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Baranoff E, Orselli E, Allouche L, Di Censo D, Scopelliti R, Grätzel M, Nazeeruddin MK. A bright tetranuclear iridium(iii) complex. Chem Commun (Camb) 2011; 47:2799-801. [DOI: 10.1039/c0cc05029f] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Wenger S, Bouit PA, Chen Q, Teuscher J, Di Censo D, Humphry-Baker R, Moser JE, Delgado JL, Martín N, Zakeeruddin SM, Grätzel M. Efficient electron transfer and sensitizer regeneration in stable pi-extended tetrathiafulvalene-sensitized solar cells. J Am Chem Soc 2010; 132:5164-9. [PMID: 20307069 DOI: 10.1021/ja909291h] [Citation(s) in RCA: 182] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The development of metal-free organic sensitizers is a key issue in dye-sensitized solar cell research. We report successful photovoltaic conversion with a new class of stable tetrathiafulvalene derivatives, showing surprising electrochemical and kinetic properties. With time-resolved spectroscopy we could observe highly efficient regeneration of the photo-oxidized tetrathiafulvalene sensitizers, which were attached to a mesoporous TiO(2) film, by a redox mediator in the pores (iodide/tri-iodide), even though the measured driving force for regeneration was only approximately 150 mV. This important proof-of-concept shows that sensitizers with a small driving force, i.e. the oxidation potential of the sensitizer is separated from the redox potenial of the mediator by as little as 150 mV, can operate functionally in dye-sensitized solar cells and eventually aid to reduce photovoltage losses due to poor energetic alignment of the materials.
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Affiliation(s)
- Sophie Wenger
- Laboratory of Photonics and Interfaces, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Federale de Lausanne (EPFL), Station 6, CH-1015 Lausanne, Switzerland
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Baranoff E, Bolink HJ, De Angelis F, Fantacci S, Di Censo D, Djellab K, Grätzel M, Nazeeruddin MK. An inconvenient influence of iridium(iii) isomer on OLED efficiency. Dalton Trans 2010; 39:8914-8. [DOI: 10.1039/c0dt00414f] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Di Censo D, Fantacci S, De Angelis F, Klein C, Evans N, Kalyanasundaram K, Bolink HJ, Grätzel M, Nazeeruddin MK. Synthesis, Characterization, and DFT/TD-DFT Calculations of Highly Phosphorescent Blue Light-Emitting Anionic Iridium Complexes. Inorg Chem 2008; 47:980-9. [DOI: 10.1021/ic701814h] [Citation(s) in RCA: 209] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Davide Di Censo
- Laboratory for Photonics and Interfaces, Station 6, Institute of Chemical Sciences and Engineering, School of basic Sciences, Swiss Federal Institute of Technology, CH - 1015 Lausanne, Switzerland, Istituto CNR di Scienze e Tecnologie Molecolari (ISTM-CNR), c/o Dipartimento di Chimica, Università di Perugia, I-06123, Perugia, Italy, and Institute of Molecular Science, University of Valencia, P.O. Box 22085 ES-46071 Valencia, Spain
| | - Simona Fantacci
- Laboratory for Photonics and Interfaces, Station 6, Institute of Chemical Sciences and Engineering, School of basic Sciences, Swiss Federal Institute of Technology, CH - 1015 Lausanne, Switzerland, Istituto CNR di Scienze e Tecnologie Molecolari (ISTM-CNR), c/o Dipartimento di Chimica, Università di Perugia, I-06123, Perugia, Italy, and Institute of Molecular Science, University of Valencia, P.O. Box 22085 ES-46071 Valencia, Spain
| | - Filippo De Angelis
- Laboratory for Photonics and Interfaces, Station 6, Institute of Chemical Sciences and Engineering, School of basic Sciences, Swiss Federal Institute of Technology, CH - 1015 Lausanne, Switzerland, Istituto CNR di Scienze e Tecnologie Molecolari (ISTM-CNR), c/o Dipartimento di Chimica, Università di Perugia, I-06123, Perugia, Italy, and Institute of Molecular Science, University of Valencia, P.O. Box 22085 ES-46071 Valencia, Spain
| | - Cedric Klein
- Laboratory for Photonics and Interfaces, Station 6, Institute of Chemical Sciences and Engineering, School of basic Sciences, Swiss Federal Institute of Technology, CH - 1015 Lausanne, Switzerland, Istituto CNR di Scienze e Tecnologie Molecolari (ISTM-CNR), c/o Dipartimento di Chimica, Università di Perugia, I-06123, Perugia, Italy, and Institute of Molecular Science, University of Valencia, P.O. Box 22085 ES-46071 Valencia, Spain
| | - Nick Evans
- Laboratory for Photonics and Interfaces, Station 6, Institute of Chemical Sciences and Engineering, School of basic Sciences, Swiss Federal Institute of Technology, CH - 1015 Lausanne, Switzerland, Istituto CNR di Scienze e Tecnologie Molecolari (ISTM-CNR), c/o Dipartimento di Chimica, Università di Perugia, I-06123, Perugia, Italy, and Institute of Molecular Science, University of Valencia, P.O. Box 22085 ES-46071 Valencia, Spain
| | - K. Kalyanasundaram
- Laboratory for Photonics and Interfaces, Station 6, Institute of Chemical Sciences and Engineering, School of basic Sciences, Swiss Federal Institute of Technology, CH - 1015 Lausanne, Switzerland, Istituto CNR di Scienze e Tecnologie Molecolari (ISTM-CNR), c/o Dipartimento di Chimica, Università di Perugia, I-06123, Perugia, Italy, and Institute of Molecular Science, University of Valencia, P.O. Box 22085 ES-46071 Valencia, Spain
| | - Henk J. Bolink
- Laboratory for Photonics and Interfaces, Station 6, Institute of Chemical Sciences and Engineering, School of basic Sciences, Swiss Federal Institute of Technology, CH - 1015 Lausanne, Switzerland, Istituto CNR di Scienze e Tecnologie Molecolari (ISTM-CNR), c/o Dipartimento di Chimica, Università di Perugia, I-06123, Perugia, Italy, and Institute of Molecular Science, University of Valencia, P.O. Box 22085 ES-46071 Valencia, Spain
| | - Michael Grätzel
- Laboratory for Photonics and Interfaces, Station 6, Institute of Chemical Sciences and Engineering, School of basic Sciences, Swiss Federal Institute of Technology, CH - 1015 Lausanne, Switzerland, Istituto CNR di Scienze e Tecnologie Molecolari (ISTM-CNR), c/o Dipartimento di Chimica, Università di Perugia, I-06123, Perugia, Italy, and Institute of Molecular Science, University of Valencia, P.O. Box 22085 ES-46071 Valencia, Spain
| | - Mohammad K. Nazeeruddin
- Laboratory for Photonics and Interfaces, Station 6, Institute of Chemical Sciences and Engineering, School of basic Sciences, Swiss Federal Institute of Technology, CH - 1015 Lausanne, Switzerland, Istituto CNR di Scienze e Tecnologie Molecolari (ISTM-CNR), c/o Dipartimento di Chimica, Università di Perugia, I-06123, Perugia, Italy, and Institute of Molecular Science, University of Valencia, P.O. Box 22085 ES-46071 Valencia, Spain
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Di Censo D, Exnar I, Graetzel M. Non-corrosive electrolyte compositions containing perfluoroalkylsulfonyl imides for high power Li-ion batteries. Electrochem commun 2005. [DOI: 10.1016/j.elecom.2005.07.005] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Klein C, Nazeeruddin MK, Liska P, Di Censo D, Hirata N, Palomares E, Durrant JR, Grätzel M. Engineering of a Novel Ruthenium Sensitizer and Its Application in Dye-Sensitized Solar Cells for Conversion of Sunlight into Electricity. Inorg Chem 2004; 44:178-80. [PMID: 15651860 DOI: 10.1021/ic048810p] [Citation(s) in RCA: 176] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A novel ligand 4,4'-bis(carboxyvinyl)-2,2'-bipyridine (L) and its ruthenium(II) complex [Ru(II)L(2)(NCS)(2)] (K8) were synthesized and characterized by analytical, spectroscopic, and electrochemical techniques. The performance of the K8 complex as a charge transfer photosensitizer in nanocrystalline TiO(2) based solar cells was studied. When the K8 complex anchored onto a nanocrystalline TiO(2) film, we achieved very efficient sensitization yielding 77 +/-5% incident photon-to-current efficiencies (IPCE) in the visible region using an electrolyte consisting of 0.6 M methyl-N-butyl imidiazolium iodide, 0.05 M iodine, 0.05 M LiI, and 0.5 M 4-tert-butylpyridine in a 50/50 (v/v) mixture of valeronitrile and acetonitrile. Under standard AM 1.5 sunlight, the complex K8 gave a short circuit photocurrent density of 18 +/- 0.5 mA/cm(2), and the open circuit voltage was 640 +/- 50 mV with fill factor of 0.75 +/- 0.05, corresponding to an overall conversion efficiency of 8.64 +/- 0.5%.
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Affiliation(s)
- C Klein
- Laboratory for Photonics and Interfaces, Institute of Chemical Sciences and Engineering, School of Basic Sciences, Swiss Federal Institute of Technology, CH-1015 Lausanne, Switzerland
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Hirata N, Lagref JJ, Palomares EJ, Durrant JR, Nazeeruddin MK, Gratzel M, Di Censo D. Supramolecular Control of Charge-Transfer Dynamics on Dye-sensitized Nanocrystalline TiO2 Films. Chemistry 2004; 10:595-602. [PMID: 14767923 DOI: 10.1002/chem.200305408] [Citation(s) in RCA: 206] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
A [Ru(dcbpy)(2)(NCS)(2)] dye has been chemically modified by the addition of a secondary electron donor moiety, N,N-(di-p-anisylamino)phenoxymethyl. Optical excitation of the modified dye adsorbed to nanocrystalline TiO(2) films shows a remarkably long-lived charge-separated state, with a decay half time of 0.7 s. Semiempirical calculations confirm that the HOMO of the modified dye molecule is localised on the electron donor group. The retardation of the recombination dynamics relative to the unmodified control dye is caused by the increase in the spatial separation of the HOMO orbital from the TiO(2) surface. The magnitude of the retardation is shown to be in agreement with that predicted from the non-adiabatic electron-tunnelling theory.
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Affiliation(s)
- Narukuni Hirata
- Imperial College, Department of Chemistry, Centre for Electronic Materials and Devices, Exhibition Road, London SW7 2AY, UK
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