1
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Centrella B, Deplano G, Damin A, Signorile M, Tortora M, Barolo C, Bonomo M, Bordiga S. A multi-technique approach to unveil the redox behaviour and potentiality of homoleptic Cu I complexes based on substituted bipyridine ligands in oxygenation reactions. Dalton Trans 2022; 51:14439-14451. [PMID: 35904361 DOI: 10.1039/d2dt01234k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The effect of differently substituted 2,2'-bipyridine ligands (i.e. 6,6'-dimethyl-2,2'-bipyridine, 5,5'-dimethyl-2,2'-bipyridine, 6,6'-dimethoxy-2,2'-bipyridine and 2,2'-bipyridine) on the reversible oxidation of the resulting CuI homoleptic complexes is investigated by means of a multi-technique approach (electronic and vibrational spectroscopies, DFT, electrochemistry). Among the four tested complexes, [CuI(6,6'-dimethyl-2,2'-bipyridine)2] (PF6) shows a peculiar behavior when oxidized with an organic peroxide (i.e. tert-butyl hydroperoxide, tBuOOH). The simultaneous use of UV-Vis-NIR and Raman spectroscopy methods and cyclovoltammetry, supported by DFT based calculations, allowed identifying (i) the change in the oxidation state of the copper ion and (ii) some peculiar modification in the local structure of the metal leading to the formation of a [CuIIOH]+ species. The latter, being able to oxidize a model molecule (i.e. cyclohexene) and showing the restoration of the original CuI complex and the formation of cyclohexanone, confirms the potential of these simple homoleptic CuI complexes as model catalysts for partial oxygenation reactions.
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Affiliation(s)
- Barbara Centrella
- Department of Chemistry and NIS Interdepartmental Center and INSTM reference center, University of Turin, via Pietro Giuria 7, I-10125 Turin, Italy.
| | - Gabriele Deplano
- Department of Chemistry and NIS Interdepartmental Center and INSTM reference center, University of Turin, via Pietro Giuria 7, I-10125 Turin, Italy.
| | - Alessandro Damin
- Department of Chemistry and NIS Interdepartmental Center and INSTM reference center, University of Turin, via Pietro Giuria 7, I-10125 Turin, Italy.
| | - Matteo Signorile
- Department of Chemistry and NIS Interdepartmental Center and INSTM reference center, University of Turin, via Pietro Giuria 7, I-10125 Turin, Italy.
| | - Mariagrazia Tortora
- AREA SCIENCE PARK, Padriciano, 99, 34149 Trieste, Italy.,Elettra-Sincrotrone Trieste, S.S. 114 km 163.5, Basovizza, 34149, Trieste, Italy
| | - Claudia Barolo
- Department of Chemistry and NIS Interdepartmental Center and INSTM reference center, University of Turin, via Pietro Giuria 7, I-10125 Turin, Italy. .,ICxT Interdepartmental Centre, Università degli Studi di Torino, Lungo Dora Siena 100, 10153 Torino, Italy
| | - Matteo Bonomo
- Department of Chemistry and NIS Interdepartmental Center and INSTM reference center, University of Turin, via Pietro Giuria 7, I-10125 Turin, Italy.
| | - Silvia Bordiga
- Department of Chemistry and NIS Interdepartmental Center and INSTM reference center, University of Turin, via Pietro Giuria 7, I-10125 Turin, Italy.
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2
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A New Piano-Stool Ruthenium(II) P-Cymene-Based Complex: Crystallographic, Hirshfeld Surface, DFT, and Luminescent Studies. CRYSTALS 2020. [DOI: 10.3390/cryst11010013] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
A new complex (Ru(η6-p-cymene)(5-ASA)Cl2) (1) where 5-ASA is 5-aminosalicylic acid has been prepared by reacting the ruthenium arene precursors ((η6-arene)Ru(μ-Cl)Cl)2, with the 5-ASA ligands in a 1:1 ratio. Full characterization of complex 1 was accomplished by elemental analysis, IR, and TGA following the structure obtained from a single-crystal X-ray pattern. The structural analysis revealed that complex 1 shows a “piano-stool” geometry with Ru-C (2.160(5)- 2.208(5)Å), Ru-N (2.159(4) Å) distances, which is similar to equivalents sister complex. Density functional theory (DFT) was used to calculate the significant molecular orbital energy levels, binding energies, bond angles, bond lengths, and spectral data (FTIR, NMR, and UV–VIS) of complex 1, consistent with the experimental results. The IR and UV–VIS spectra of complex 1 were computed using all of the methods and choose the most appropriate way to discuss. Hirshfeld surface analysis was also executed to understand the role of weak interactions such as H⋯H, C⋯H, C-H⋯π, and vdW interactions, which play a significant role in the crystal environment’s stability. Moreover, the luminescence results at room temperature show that complex 1 gives a more intense emission band positioned at 465 nm upon excitation at 330 nm makes it a suitable candidate for the building of photoluminescent material.
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3
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Soares LGL, Padilha DS, Amado RS, Scarpellini M. trans-Bis(2,2′-bipyridine-4,4′-dicarboxylic acid-κ 2
N, N′)dichloridoruthenium(III) perchlorate. IUCRDATA 2018. [DOI: 10.1107/s241431461801547x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
In the crystal structure of the ruthenium(III) complex, trans-[RuIII(dcbpy)2Cl2]ClO4 (dcbpy = 2,2′-bipyridine-4,4′-dicarboxylic acid, C12H8N2O4), the RuIII atom lies on an inversion centre, showing a small distortion in its octahedral environment. The Ru—Cl bond lengths are shorter than those present in the analogous trans-ruthenium(II) compound containing the bipyridine ligand. The C—O distances in the two symmetry-independent carboxylic acid moieties of the ligand are similar in one group, but different in the other. This is probably due to the different intermolecular interactions they experience with neighbouring cationic complexes. The hydrogen-bonding interactions in which they are involved form a three-dimensional structure, similar to those found in coordination polymers.
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4
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Woodward CP, Rüther T, Coghlan CJ, Jones TW, Hebting Y, Cordiner RL, Dawson RE, Robinson DEJE, Forsyth CM, Wilson GJ. Tetracarboxylate Bis-Bipyridine Ruthenium Dyes: Synthesis, Structural and Electronic Characterisation. Chempluschem 2018; 83:691-703. [PMID: 31950621 DOI: 10.1002/cplu.201800116] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Revised: 04/27/2018] [Indexed: 11/08/2022]
Abstract
The preparation of ruthenium complexes with novel 2,2'-bipyridine (bpy) ligands bearing four carboxylic acid groups was investigated with a view to creating dyes containing more than two potential anchoring groups per bpy unit for attachment to a titania surface. Synthetic challenges are encountered upon using the 2,2'-bipyridine-3,3',4,4'-tetracarboxylic acid ligand because it readily decarboxylates. The use of the methyl esterified derivative (3) proved to be more successful for complex preparation, with a robust preparation of the [Ru(3)2 Cl2 ] complex identified with diglyme as the solvent. This complex was further converted into the thiocyanato complex, [Ru(3)2 (NCS)2 ], which could not be completely de-esterified. X-ray analysis of crystals obtained from a mixture of isomers for this complex provided data for the S,S- and N,S-coordinated isomers; both showed a twisted arrangement of the pyridine rings in the 2,2'-bipyridine-3,3',4,4'-tetracarboxylic acid ligand, owing to steric hinderance. Conversely, the isosteric 2,2'-bipyridine-4,4',5,5'-tetracarboxylic acid ligand was easily converted into the desired [Ru(2)2 (NCS)2 ] complex through a standard one-pot procedure in N,N-dimethylformamide solvent. All of the complexes presented herein exhibit a significant redshift for the metal to ligand charge-transfer bands, relative to the benchmark ruthenium dye N719 and derivatives thereof. All complexes exhibit a quasi-reversible process for the ruthenium(II/III) couple at approximately 0.4 V versus the ferrocene couple, comparable to analogous ruthenium dyes.
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Affiliation(s)
| | - Thomas Rüther
- Energy, CSIRO, Research Way, Clayton, VIC, 3168, Australia
| | | | - Timothy W Jones
- Energy, CSIRO, 10 Murray Dwyer Cct, Mayfield West, NSW, 2304, Australia
| | - Yanek Hebting
- Dyesol Australia Pty Ltd, 3 Dominion Place, Queanbeyan, NSW, 2620, Australia
| | - Richard L Cordiner
- Dyesol Australia Pty Ltd, 3 Dominion Place, Queanbeyan, NSW, 2620, Australia
| | - Ryan E Dawson
- Dyesol Australia Pty Ltd, 3 Dominion Place, Queanbeyan, NSW, 2620, Australia
| | | | - Craig M Forsyth
- School of Chemistry, Monash University, Clayton, VIC, 3800, Australia
| | - Gregory J Wilson
- Energy, CSIRO, 10 Murray Dwyer Cct, Mayfield West, NSW, 2304, Australia
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5
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Bednářová E, Dračínský M, Malatinec Š, Císařová I, Lamaty F, Kotora M. Synthesis of a Bolm's 2,2′-Bipyridine Ligand Analogue and Its Applications. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800452] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Eva Bednářová
- Department of Organic Chemistry, Faculty of Science; Charles University; Hlavova 8 128 43 Praha 2 Czech Republic
- Institut des Biomolécules Max Mousseron IBMM), UMR 5247, CNRS; Université de Montpellier, ENSCM, Campus Triolet; Place Eugène Bataillon 34095 Montpellier cedex 5 France
| | - Martin Dračínský
- Institute of Organic Chemistry and Biochemistry; Academy of Sciences; Flemingovo náměstí 2 166 10 Praha Czech Republic
| | - Štefan Malatinec
- Department of Organic Chemistry, Faculty of Science; Charles University; Hlavova 8 128 43 Praha 2 Czech Republic
| | - Ivana Císařová
- Department of Inorganic Chemistry, Faculty of Science; Charles University; Hlavova 8 128 43 Praha 2 Czech Republic
| | - Frédéric Lamaty
- Institut des Biomolécules Max Mousseron IBMM), UMR 5247, CNRS; Université de Montpellier, ENSCM, Campus Triolet; Place Eugène Bataillon 34095 Montpellier cedex 5 France
| | - Martin Kotora
- Department of Organic Chemistry, Faculty of Science; Charles University; Hlavova 8 128 43 Praha 2 Czech Republic
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6
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Novelli V, Barbero N, Barolo C, Viscardi G, Sliwa M, Sauvage F. Electrolyte containing lithium cation in squaraine-sensitized solar cells: interactions and consequences for performance and charge transfer dynamics. Phys Chem Chem Phys 2017; 19:27670-27681. [PMID: 28983545 DOI: 10.1039/c7cp04340f] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
By optimizing the lithium concentration in an electrolyte to 50 mmol L-1 and the dye-to-chenodeoxycholic acid ratio in a VG1-based dye solution, we achieved 4.7% power conversion efficiency under standard AM 1.5G conditions. In addition to this performance, we herein discuss the role played by lithium in the electrolyte and its interplay in the charge transfer processes from ms to fs dynamics. Based on electrochemical impedance spectroscopy, photoluminescence and pump-probe transient absorption spectroscopy, we conclude that although lithium increases the electron diffusion length, this has no satisfactory impact on electron injection and even slows dye regeneration. This study provides evidence that lithium is not only specifically adsorbed on the surface of TiO2 but prompts a molecular reorganization of the self-assembled dye monolayer, forming harmful H-aggregates.
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Affiliation(s)
- Vittoria Novelli
- Laboratoire de Réactivité et Chimie des Solides (LRCS, CNRS UMR 7314), Université de Picardie Jules Verne, 33 rue Saint-Leu, 80039 Amiens Cedex, France
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7
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Boaretto R, Carli S, Caramori S, Bignozzi CA, Saccone D, Magistris C, Barolo C, Viscardi G. A new ruthenium black dye design with improved optical properties for transparent dye sensitized solar devices. Dalton Trans 2017; 46:16390-16393. [DOI: 10.1039/c7dt03536e] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new ligand for panchromatic Ru(ii) sensitizer yields 32% efficiency improvement over conventional “black dye” in transparent DSSCs.
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Affiliation(s)
- R. Boaretto
- Department of Chemical and Pharmaceutical Sciences
- University of Ferrara
- Italy
| | - S. Carli
- Department of Chemical and Pharmaceutical Sciences
- University of Ferrara
- Italy
| | - S. Caramori
- Department of Chemical and Pharmaceutical Sciences
- University of Ferrara
- Italy
| | - C. A. Bignozzi
- Department of Chemical and Pharmaceutical Sciences
- University of Ferrara
- Italy
| | - D. Saccone
- Department of Chemistry and NIS Interdepartmental Centre and INSTM Reference Centre
- University of Torino
- 10125 Torino
- Italy
| | - C. Magistris
- Department of Chemistry and NIS Interdepartmental Centre and INSTM Reference Centre
- University of Torino
- 10125 Torino
- Italy
| | - C. Barolo
- Department of Chemistry and NIS Interdepartmental Centre and INSTM Reference Centre
- University of Torino
- 10125 Torino
- Italy
| | - G. Viscardi
- Department of Chemistry and NIS Interdepartmental Centre and INSTM Reference Centre
- University of Torino
- 10125 Torino
- Italy
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8
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Gorczyński A, Harrowfield JM, Patroniak V, Stefankiewicz AR. Quaterpyridines as Scaffolds for Functional Metallosupramolecular Materials. Chem Rev 2016; 116:14620-14674. [DOI: 10.1021/acs.chemrev.6b00377] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Adam Gorczyński
- Faculty
of Chemistry, Adam Mickiewicz University, Umultowska 89b, 61614 Poznań, Poland
| | - Jack M. Harrowfield
- Institut
de Science et d’Ingénierie Supramoléculaires
(ISIS), Université de Strasbourg, 8 allée Gaspard Monge, 67083 Strasbourg, France
| | - Violetta Patroniak
- Faculty
of Chemistry, Adam Mickiewicz University, Umultowska 89b, 61614 Poznań, Poland
| | - Artur R. Stefankiewicz
- Faculty
of Chemistry, Adam Mickiewicz University, Umultowska 89b, 61614 Poznań, Poland
- Centre
for Advanced Technologies, Adam Mickiewicz University, Umultowska
89c, 61-614 Poznań, Poland
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9
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Synthesis, characterisation, and properties of p-cymene Ruthenium(II) tetracarboxylate bipyridine complexes [(η6-p-cymene)Ru(Rn,Rn′-tcbpy)Cl][Cl]. J Organomet Chem 2016. [DOI: 10.1016/j.jorganchem.2016.08.030] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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10
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Saccone D, Galliano S, Barbero N, Quagliotto P, Viscardi G, Barolo C. Polymethine Dyes in Hybrid Photovoltaics: Structure-Properties Relationships. European J Org Chem 2016. [DOI: 10.1002/ejoc.201501598] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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11
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Synthesis, characterization and crystal structure of 6-Chloro-4,4′-dimethyl-2,2′-bipyridine and 4,4′-Dimethyl 2,2′-bipyridine N-Oxide. J Mol Struct 2016. [DOI: 10.1016/j.molstruc.2015.11.054] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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12
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Terpyridine and Quaterpyridine Complexes as Sensitizers for Photovoltaic Applications. MATERIALS 2016; 9:ma9030137. [PMID: 28773266 PMCID: PMC5456731 DOI: 10.3390/ma9030137] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Revised: 02/16/2016] [Accepted: 02/22/2016] [Indexed: 12/22/2022]
Abstract
Terpyridine and quaterpyridine-based complexes allow wide light harvesting of the solar spectrum. Terpyridines, with respect to bipyridines, allow for achieving metal-complexes with lower band gaps in the metal-to-ligand transition (MLCT), thus providing a better absorption at lower energy wavelengths resulting in an enhancement of the solar light-harvesting ability. Despite the wider absorption of the first tricarboxylate terpyridyl ligand-based complex, Black Dye (BD), dye-sensitized solar cell (DSC) performances are lower if compared with N719 or other optimized bipyridine-based complexes. To further improve BD performances several modifications have been carried out in recent years affecting each component of the complexes: terpyridines have been replaced by quaterpyridines; other metals were used instead of ruthenium, and thiocyanates have been replaced by different pinchers in order to achieve cyclometalated or heteroleptic complexes. The review provides a summary on design strategies, main synthetic routes, optical and photovoltaic properties of terpyridine and quaterpyridine ligands applied to photovoltaic, and focuses on n-type DSCs.
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13
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Urbani M, Sánchez Carballo M, Kumar SA, Vázquez P, Grätzel M, Khaja Nazeeruddin M, Langa F, Torres T. Heteroleptic Ru(ii)-bipyridine complexes based on hexylthioether-, hexyloxy- and hexyl-substituted thienylenevinylenes and their application in dye-sensitized solar cells. Phys Chem Chem Phys 2016; 18:11901-8. [DOI: 10.1039/c5cp07753b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of eight Ru(II) sensitizers incorporating thienylenevinylene-functionalised bipyridines as ancillary ligand is reported.
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Affiliation(s)
- Maxence Urbani
- Departamento de Química Orgánica
- Universidad Autónoma de Madrid
- 28049 Madrid
- Spain
- Instituto de Nanociencia
| | | | - Sangeeta Amit Kumar
- Laboratory of Photonics and Interfaces
- Institute of Chemical Sciences and Engineering
- Swiss Federal Institute of Technology (EPFL)
- CH 1015 – Lausanne
- Switzerland
| | | | - Michael Grätzel
- Laboratory of Photonics and Interfaces
- Institute of Chemical Sciences and Engineering
- Swiss Federal Institute of Technology (EPFL)
- CH 1015 – Lausanne
- Switzerland
| | - Mohammad Khaja Nazeeruddin
- Laboratory of Photonics and Interfaces
- Institute of Chemical Sciences and Engineering
- Swiss Federal Institute of Technology (EPFL)
- CH 1015 – Lausanne
- Switzerland
| | - Fernando Langa
- Instituto de Nanociencia
- Nanotecnología y Materiales Moleculares (INAMOL) Universidad de Castilla-La Mancha
- Campus de la Fábrica de Armas
- 45071 Toledo
- Spain
| | - Tomás Torres
- Departamento de Química Orgánica
- Universidad Autónoma de Madrid
- 28049 Madrid
- Spain
- Instituto Madrileño de Estudios Avanzados (IMDEA)-Nanociencia c/Faraday
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14
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Editorial of Special Issue Ruthenium Complex: The Expanding Chemistry of the Ruthenium Complexes. Molecules 2015; 20:17244-74. [PMID: 26393560 PMCID: PMC6332046 DOI: 10.3390/molecules200917244] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2015] [Revised: 09/09/2015] [Accepted: 09/11/2015] [Indexed: 12/18/2022] Open
Abstract
Recent trends in Ru complex chemistry are surveyed with emphasis on the development of anticancer drugs and applications in catalysis, polymers, materials science and nanotechnology.
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15
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Abstract
This review highlights the efforts towards the realization of an artificial photosynthetic system able to convert sunlight into electricity by using a unique solvent, water, the solvent of life.
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Affiliation(s)
- Federico Bella
- GAME Lab
- CHENERGY Group
- Department of Applied Science and Technology – DISAT
- 10129 Torino
- Italy
| | - Claudio Gerbaldi
- GAME Lab
- CHENERGY Group
- Department of Applied Science and Technology – DISAT
- 10129 Torino
- Italy
| | - Claudia Barolo
- Department of Chemistry and NIS Interdepartmental Centre
- Università degli Studi di Torino
- 10125 Torino
- Italy
| | - Michael Grätzel
- Laboratory of Photonics and Interfaces
- Swiss Federal Institute of Technology (EPFL)
- 1015 Lausanne
- Switzerland
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16
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A computational approach to the electronic, optical and acid–base properties of Ru(II) dyes for photoelectrochemical solar cells applications. Polyhedron 2014. [DOI: 10.1016/j.poly.2014.05.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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17
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Gianotti V, Favaro G, Bonandini L, Palin L, Croce G, Boccaleri E, Artuso E, van Beek W, Barolo C, Milanesio M. Rationalization of dye uptake on titania slides for dye-sensitized solar cells by a combined chemometric and structural approach. CHEMSUSCHEM 2014; 7:3039-3052. [PMID: 25274506 DOI: 10.1002/cssc.201402194] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2014] [Indexed: 06/03/2023]
Abstract
A model photosensitizer (D5) for application in dye-sensitized solar cells has been studied by a combination of XRD, theoretical calculations, and spectroscopic/chemometric methods. The conformational stability and flexibility of D5 and molecular interactions between adjacent molecules were characterized to obtain the driving forces that govern D5 uptake and grafting and to infer the most likely arrangement of the molecules on the surface of TiO2. A spectroscopic/chemometric approach was then used to yield information about the correlations between three variables that govern the uptake itself: D5 concentration, dispersant (chenodeoxycholic acid; CDCA) concentration, and contact time. The obtained regression model shows that large uptakes can be obtained at high D5 concentrations in the presence of CDCA with a long contact time, or in absence of CDCA if the contact time is short, which suggests how dye uptake and photovoltaic device preparation can be optimized.
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Affiliation(s)
- Valentina Gianotti
- Dipartimento di Scienze e Innovazione Tecnologica, Università del Piemonte Orientale "A. Avogadro", Viale T. Michel 11, 15121 Alessandria (Italy)
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18
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Chiappone A, Bella F, Nair JR, Meligrana G, Bongiovanni R, Gerbaldi C. Structure-Performance Correlation of Nanocellulose-Based Polymer Electrolytes for Efficient Quasi-solid DSSCs. ChemElectroChem 2014. [DOI: 10.1002/celc.201402051] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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19
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Chu TC, Lin RYY, Lee CP, Hsu CY, Shih PC, Lin R, Li SR, Sun SS, Lin JT, Vittal R, Ho KC. Ionic liquid with a dual-redox couple for efficient dye-sensitized solar cells. CHEMSUSCHEM 2014; 7:146-153. [PMID: 24339350 DOI: 10.1002/cssc.201301015] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2013] [Revised: 10/31/2013] [Indexed: 06/03/2023]
Abstract
A new type of ionic liquid that contains a nitroxide radical (N-O(.)) and iodide as two redox couples, JC-IL, has been successfully synthesized for high-performance dye-sensitized solar cells (DSSCs). Both of the redox couples exhibit distinct redox potentials and attractive electrochemical characteristics. The UV/Vis absorption spectra of JC-IL shows a low-intensity peak compared to the strong absorption of I2 in the wavelength region of 350-500 nm. The high open-circuit voltage of DSSCs with JC-IL is over 850 mV, which is approximately 150 mV higher than that of the DSSCs with a standard iodide electrolyte. The dramatic increase in the standard heterogeneous electron-transfer rate constant leads to an increase in the short-circuit current for JC-IL compared to that of 2,2,6,6-tetramethylpiperidin-N-oxyl (TEMPO). DSSCs with the JC-IL electrolyte show promising cell efficiencies if coupled with dyes CR147 (8.12%) or D149 (6.76%). The efficiencies of the DSSCs based on the JC-IL electrolyte are higher than those of DSSCs based on either TEMPO electrolyte or standard iodide electrolyte alone.
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Affiliation(s)
- Te-Chun Chu
- Department of Chemical Engineering, National Taiwan University, Taipei 10617 (Taiwan)
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20
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Park J, Barbero N, Yoon J, Dell'Orto E, Galliano S, Borrelli R, Yum JH, Di Censo D, Grätzel M, Nazeeruddin MK, Barolo C, Viscardi G. Panchromatic symmetrical squaraines: a step forward in the molecular engineering of low cost blue-greenish sensitizers for dye-sensitized solar cells. Phys Chem Chem Phys 2014; 16:24173-7. [DOI: 10.1039/c4cp04345f] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new series of low cost dibranched symmetrical blue-greenish squaraines showing interesting photovoltaic properties and photostabilities is reported.
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Affiliation(s)
- J. Park
- Università di Torino
- Dipartimento di Chimica and NIS Interdepartmental Centre
- Torino, Italy
| | - N. Barbero
- Università di Torino
- Dipartimento di Chimica and NIS Interdepartmental Centre
- Torino, Italy
- DYEPOWER
- 00185 Roma, Italy
| | - J. Yoon
- Laboratoire de Photonique et Interfaces
- Institut des Sciences et Ingénierie Chimiques
- Ecole Polytechnique Fédérale de Lausanne (EPFL)
- Lausanne, Switzerland
- R & D Center DSC Team
| | - E. Dell'Orto
- Laboratoire de Photonique et Interfaces
- Institut des Sciences et Ingénierie Chimiques
- Ecole Polytechnique Fédérale de Lausanne (EPFL)
- Lausanne, Switzerland
- Department of Materials Science and Milano-Bicocca Solar Energy Research Center-MIB-Solar
| | - S. Galliano
- Università di Torino
- Dipartimento di Chimica and NIS Interdepartmental Centre
- Torino, Italy
- DYEPOWER
- 00185 Roma, Italy
| | - R. Borrelli
- Università di Torino
- Dipartimento di Scienze Agrarie
- Forestali e Alimentari
- Grugliasco, Italy
| | - J.-H. Yum
- Laboratoire de Photonique et Interfaces
- Institut des Sciences et Ingénierie Chimiques
- Ecole Polytechnique Fédérale de Lausanne (EPFL)
- Lausanne, Switzerland
| | - D. Di Censo
- Laboratoire de Photonique et Interfaces
- Institut des Sciences et Ingénierie Chimiques
- Ecole Polytechnique Fédérale de Lausanne (EPFL)
- Lausanne, Switzerland
| | - M. Grätzel
- Laboratoire de Photonique et Interfaces
- Institut des Sciences et Ingénierie Chimiques
- Ecole Polytechnique Fédérale de Lausanne (EPFL)
- Lausanne, Switzerland
| | - Md. K. Nazeeruddin
- Laboratoire de Photonique et Interfaces
- Institut des Sciences et Ingénierie Chimiques
- Ecole Polytechnique Fédérale de Lausanne (EPFL)
- Lausanne, Switzerland
| | - C. Barolo
- Università di Torino
- Dipartimento di Chimica and NIS Interdepartmental Centre
- Torino, Italy
| | - G. Viscardi
- Università di Torino
- Dipartimento di Chimica and NIS Interdepartmental Centre
- Torino, Italy
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