1
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Zigon N, Solano F, Auban-Senzier P, Grolleau S, Devic T, Zolotarev PN, Proserpio DM, Barszcz B, Olejniczak I, Avarvari N. A redox active rod coordination polymer from tetrakis(4-carboxylic acid biphenyl)tetrathiafulvalene. Dalton Trans 2024; 53:4805-4813. [PMID: 38372362 DOI: 10.1039/d3dt04280d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2024]
Abstract
An enlarged version of the ubiquitous tetrathiafulvalene-tetrabenzoic acid is described, with 4,4'-biphenyl moieties as spacers between the coordination moieties and the electroactive core. The obtained rectangular ligand has a 14 × 22 Å2 size and is combined with Zn(II) under solvothermal conditions to yield a coordination polymer endowed with large cavities of ca. 15 × 11 Å2/10 × 10 Å2. The topology of the material is discussed in detail using the Points of Extension and Metals (PE&M) or the Straight-rod (STR) representation, and the sqc1121 or tfo topological type of the structure is observed, respectively. Its stability towards solvent removal and electrical properties are discussed. The material does not present any permanent porosity upon desolvation according to nitrogen sorption measurements at 77 K. Nevertheless, a significant increase in conductivity is observed on compressed pellets of the material upon post-synthetic oxidation with iodine. Raman spectroscopy combined with density functional theory (DFT) calculations has been used to characterize the oxidation state of tetrakis(4-carboxylic acid biphenyl)tetrathiafulvalene for coordination polymers.
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Affiliation(s)
- Nicolas Zigon
- Univ Angers, CNRS, MOLTECH-ANJOU, SFR MATRIX, F-49000 Angers, France.
| | - Federica Solano
- Univ Angers, CNRS, MOLTECH-ANJOU, SFR MATRIX, F-49000 Angers, France.
| | - Pascale Auban-Senzier
- Université Paris-Saclay, CNRS, UMR 8502, Laboratoire de Physique des Solides, 91405 Orsay, France
| | - Stéphane Grolleau
- Université de Nantes, CNRS, Institut des Matériaux Jean Rouxel, IMN, F-44000 Nantes, France
| | - Thomas Devic
- Université de Nantes, CNRS, Institut des Matériaux Jean Rouxel, IMN, F-44000 Nantes, France
| | - Pavel N Zolotarev
- Università degli studi di Milano, Dipartimento di Chimica, Via Golgi 19, 20133 Milano, Italy
| | - Davide M Proserpio
- Università degli studi di Milano, Dipartimento di Chimica, Via Golgi 19, 20133 Milano, Italy
| | - Bolesław Barszcz
- Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60-179 Poznań, Poland
| | - Iwona Olejniczak
- Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60-179 Poznań, Poland
| | - Narcis Avarvari
- Univ Angers, CNRS, MOLTECH-ANJOU, SFR MATRIX, F-49000 Angers, France.
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2
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Lee JI, Faheem AB, Jang WJ, Kim KM, Cha JS, Seo NU, Kim H, Lee KK, Yang JH. Effective Enhancement of Energy Density of Zinc-Polyiodide Flow Batteries by Organic/Penta-iodide Complexation. ACS APPLIED MATERIALS & INTERFACES 2023; 15:48122-48134. [PMID: 37791814 DOI: 10.1021/acsami.3c09426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/05/2023]
Abstract
Based on the ambipolar characteristics and high solubility of ZnI2, zinc-polyiodide flow batteries (ZIFB) have attracted attention as high-energy density flow batteries. However, due to the various oxidation products of iodide (I-) and the formation of iodine (I2) solid precipitates at the positive electrode, the limiting state-of-charge (SoC) of ZIFB has not been clearly defined. Herein, a clear definition of SoC in ZIFBs is given based on the thermodynamic relationship among I-(aq), I3-(aq), I5-(aq), and I2(aq) in the electrolyte. Conventional ZIFBs are limited by their maximum attainable SoC of 87%, at which the fully charged catholyte includes I-, I3-, and I5- ions at molar ratios of 49.6, 32.2, and 18.1%, respectively. Furthermore, two effective strategies to extend the maximum SoC are suggested: (1) increasing the formation constant (Keq) of I3- can raise the availability of I- for electrooxidation by suppressing I2 precipitation, and (2) promoting the production of higher-order polyiodides such as I5- can increase the oxidation state of the charged electrolyte. The addition of 5 vol % triethylene glycol (tri-EG) to the electrolyte increased Keq from 710 to 1123 L mol-1; this increase was confirmed spectrophotometrically. Tri-EG stabilized I5- ions in the form of the I5-/tri-EG complex, thereby converting the main oxidation product from I3- to I5-. The preferred electrochemical production of I5- in the tri-EG electrolyte was observed by electrochemical and computational analyses. As a result, the maximum attainable SoC was enhanced remarkably to 116%, yielding molar ratios of I-, I3-, and I5- ions of 9.1, 11.2, and 79.7%, respectively. This SoC extension effect was confirmed in the ZIFB flow cell with stable charge-discharge cycling at the SoC 120% limit, demonstrating the highest energy density, 249.9 Wh L-1, among all reported ZIFBs.
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Affiliation(s)
- Jae-Ik Lee
- Energy Storage Research Department, Korea Institute of Energy Research (KIER), Daejeon 34129, Republic of Korea
- Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Abdullah Bin Faheem
- Department of Chemistry, Kunsan National University, Gunsan, Jeonbuk 54150, Republic of Korea
| | - Won Joon Jang
- Department of Cell Development, SK on, Daejeon 34124, Republic of Korea
| | - Kyung Mi Kim
- Energy Storage Research Department, Korea Institute of Energy Research (KIER), Daejeon 34129, Republic of Korea
- Department of Chemistry, Sungshin Women's University, Seoul 01133, Republic of Korea
| | - Jin Seong Cha
- Energy Storage Research Department, Korea Institute of Energy Research (KIER), Daejeon 34129, Republic of Korea
- Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea
| | - Noh-Uk Seo
- Energy Storage Research Department, Korea Institute of Energy Research (KIER), Daejeon 34129, Republic of Korea
- Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Hansung Kim
- Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Kyung-Koo Lee
- Department of Chemistry, Kunsan National University, Gunsan, Jeonbuk 54150, Republic of Korea
| | - Jung Hoon Yang
- Energy Storage Research Department, Korea Institute of Energy Research (KIER), Daejeon 34129, Republic of Korea
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3
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Pitchiya AP, Slenker BE, Sreeram A, Johnson C, Orimolade T, Roy D, Krishnan S. Graphene-Enhanced Ion Transport in Dual-Conducting Composite Films of Polyacetylene and an Imidazolium Iodide Ionic Liquid. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:6767-6779. [PMID: 37140961 DOI: 10.1021/acs.langmuir.3c00259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Dual-conducting polymer films were synthesized by dispersing graphene in an aqueous solution of poly(vinyl alcohol) and 1-propyl-3-methylimidazolium iodide ([C3mim]I) ionic liquid and thermally converting the poly(vinyl alcohol) to polyene in the presence of hydroiodic acid catalyst. The electrical and mechanical properties of the resulting free-standing films of the nanocomposite, containing different concentrations of graphene, were analyzed using electrochemical impedance spectroscopy (EIS) and dynamic mechanical analysis (DMA), respectively. Nyquist plots (imaginary vs real components of the frequency-dependent impedance) showed two characteristic arcs representing the composite's electronic and ionic conduction pathways. The conductivity values corresponding to both charge transport mechanisms increased with temperature and the graphene concentration. The enhancement in electronic conductivity is expected because of graphene's high electron mobility. Interestingly, ionic conductivity also showed a significant increase with graphene concentration, approximately triple the extent of the rise in the electronic conductivity, even though the loss and storage moduli of the films increased. (Generally, a higher modulus results in lower ionic conductivities in ionic gels.) Molecular dynamics simulations of the three-component system provided some insights into this unusual behavior. Mean square displacement data showed that the diffusion of the iodide anions was relatively isotropic. The iodide diffusion coefficient was higher in a blend with 5 vol % graphene than in blends with 3 vol % graphene or no graphene. The improvement is attributed to the interfacial effects of the graphene on the free volume of the blend. Furthermore, an exclusion of the iodide ions from the vicinity of graphene was observed in the radial distribution function analysis. The increase in the effective concentration of iodide due to this exclusion and the increase in its diffusion coefficient because of the excess free volume are the primary reasons for the observed enhancement in ionic conductivity by adding graphene.
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Affiliation(s)
- Aswin Prathap Pitchiya
- Department of Chemical and Biomolecular Engineering, Clarkson University, Potsdam, New York 13699, United States
| | - Benjamin Edward Slenker
- Department of Chemical and Biomolecular Engineering, Clarkson University, Potsdam, New York 13699, United States
| | - Arvind Sreeram
- Department of Chemical and Biomolecular Engineering, Clarkson University, Potsdam, New York 13699, United States
| | - Cody Johnson
- Department of Physics, Clarkson University, Potsdam, New York 13699, United States
| | - Temitope Orimolade
- Department of Chemical and Biomolecular Engineering, Clarkson University, Potsdam, New York 13699, United States
| | - Dipankar Roy
- Department of Physics, Clarkson University, Potsdam, New York 13699, United States
| | - Sitaraman Krishnan
- Department of Chemical and Biomolecular Engineering, Clarkson University, Potsdam, New York 13699, United States
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4
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Shirota H, Koyakkat M, Cao M, Shimizu M, Asakura S, Kawamoto H, Moriyama K. Facile Preparation of Deep Eutectic Solvents Having High Electrical Conductivities. J Mol Liq 2023. [DOI: 10.1016/j.molliq.2022.121176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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5
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Hassan HM, Betiha MA, Alhumaimess MS, Alraddadi TS, Mohamed SK, Younis SA, Alqadami AA, Alsohaimi IH. Phosphotungestic acid and manganese containing periodic mesoporous organosilica with imidazolium ionic liquid framework: A robust and durable nanocomposite for desulfurization of aromatic sulfur in diesel fraction. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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6
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Ferjani H, Bechaieb R, Dege N, El-Fattah WA, Elamin NY, Frigui W. Stabilization of supramolecular network of fluconazole drug polyiodide: Synthesis, computational and spectroscopic studies. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133192] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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7
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Putz AM, Len A, Trif L, Horváth ZE, Almásy L. Imidazolium Ionic Liquids as Designer Solvents Confined in Silica Nanopores. Gels 2022; 8:gels8060388. [PMID: 35735732 PMCID: PMC9222874 DOI: 10.3390/gels8060388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 06/13/2022] [Accepted: 06/16/2022] [Indexed: 12/04/2022] Open
Abstract
Composite silica xerogels were prepared via acid catalysed sol–gel route using tetraethoxysilan (TEOS) as silica precursor, and 1-butyl-3-methylimidazolium tetrafluoroborate [BMIM][BF4] or 1-butyl-3-methylimidazolium chloride [BMIM][Cl] ionic liquids, used simultaneously as co-solvents, catalysts and pore templates, at various IL-to-silica ratios. Morphology of the xerogels prepared using the different IL templating agents were investigated using scanning electron microscopy (SEM), nitrogen sorption and small angle neutron scattering (SANS). The thermal behavior of the composites was analyzed by thermal gravimetry, whereas the compositions were checked by infrared spectroscopy and EDX. The differences in the morphology and thermal behavior of the composites due to the different IL additives were revealed.
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Affiliation(s)
- Ana-Maria Putz
- “Coriolan Drăgulescu” Institute of Chemistry, Bv. Mihai Viteazul, No. 24, 300223 Timisoara, Romania
- Correspondence: (A.-M.P.); (L.A.)
| | - Adél Len
- Institute for Energy Security and Environmental Safety, Centre for Energy Research, Konkoly-Thege 29-33, 1121 Budapest, Hungary;
- Faculty of Engineering and Information Technology, University of Pécs, Boszorkány u. 2, 7624 Pécs, Hungary
| | - László Trif
- Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Magyar Tudósok Körútja 2, 1117 Budapest, Hungary;
| | - Zsolt Endre Horváth
- Institute for Technical Physics and Material Science, Centre for Energy Research, Konkoly-Thege út 29-33, 1121 Budapest, Hungary;
| | - László Almásy
- Institute for Energy Security and Environmental Safety, Centre for Energy Research, Konkoly-Thege 29-33, 1121 Budapest, Hungary;
- Correspondence: (A.-M.P.); (L.A.)
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8
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Mahimai BM, Sivasubramanian G, Moorthy S, Deivanayagam P. Copper Metal Organic Framework-Encapsulated Ionic Liquid-Decorated Sulfonated Polystyrene- block-poly(ethylene-ranbutylene)- block-polystyrene Membranes for Fuel Cells. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c01209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Berlina Maria Mahimai
- Department of Chemistry, SRM Institute of Science and Technology, Kattankulathur 603203, Chengalpattu District, Tamilnadu, India
| | - Gandhimathi Sivasubramanian
- Department of Physics, SRM Valliammai Engineering College, Kattankulathur 603203, Chengalpattu District, Tamilnadu, India
| | - Siva Moorthy
- Department of Physics and Nanotechnology, SRM Institute of Science and Technology, Kattankulathur 603203, Chengalpattu District, Tamilnadu, India
| | - Paradesi Deivanayagam
- Department of Chemistry, SRM Institute of Science and Technology, Kattankulathur 603203, Chengalpattu District, Tamilnadu, India
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9
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Gunasekaran A, Chen H, Ponnusamy VK, Aljafari B, Sambandam A. Preparation of poly (ε‐caprolactone) as a gel electrolyte for
dye‐sensitized
solar cells. POLYM ADVAN TECHNOL 2022. [DOI: 10.1002/pat.5710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Ahalya Gunasekaran
- Nanomaterials and Solar Energy Conversion Lab, Department of Chemistry National Institute of Technology Tiruchirappalli India
| | - Hsuan‐Ying Chen
- Department of Medicinal and Applied Chemistry Kaohsiung Medical University Kaohsiung Taiwan
- Department of Medical Research Kaohsiung Medical University Hospital Kaohsiung Taiwan
| | - Vinoth Kumar Ponnusamy
- Department of Medicinal and Applied Chemistry Kaohsiung Medical University Kaohsiung Taiwan
- Department of Medical Research Kaohsiung Medical University Hospital Kaohsiung Taiwan
| | - Belqasem Aljafari
- Department of Electrical Engineering College of Engineering, Najran University Najran Saudi Arabia
| | - Anandan Sambandam
- Nanomaterials and Solar Energy Conversion Lab, Department of Chemistry National Institute of Technology Tiruchirappalli India
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10
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Kim H, Kim KM, Ryu J, Ki S, Sohn D, Chae J, Chang J. Triiodide-in-Iodine Networks Stabilized by Quaternary Ammonium Cations as Accelerants for Electrode Kinetics of Iodide Oxidation in Aqueous Media. ACS APPLIED MATERIALS & INTERFACES 2022; 14:12168-12179. [PMID: 35254047 DOI: 10.1021/acsami.1c21429] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The Zn-polyiodide redox flow battery is considered to be a promising aqueous energy storage system. However, in its charging process, the electrode kinetics of I- oxidation often suffer from an intrinsically generated iodine film (I2-F) on the cathode of the battery. Therefore, it is critical to both understand and enhance the observed slow electrode kinetics of I- oxidation by an electrochemically generated I2-F. In this article, we introduced an electrogenerated N-methyl-N-ethyl pyrrolidinium iodide (MEPI)-iodine (I2) solution, designated as MEPIS, and demonstrated that the electrode kinetics of I- oxidation were dramatically enhanced compared to an I2-F under conventional electrolyte conditions, such as NaI. We showed that this result mainly contributed to the fast electro-oxidation of triiodide (I3-), which exists in the shape of a I3--in-I2 network, [I3-·(I2)n]. Raman spectroscopic and electrochemical analyses showed that the composition of electrogenerated MEPIS changed from I3- to [I3-·(I2)n] via I5- as the anodic overpotential increased. We also confirmed that I- was electrochemically oxidized on a MEPIS-modified Pt electrode with fast electrode kinetics, which is clearly contrary to the nature of an I2-F derived from a NaI solution as a kinetic barrier of I- oxidation. Through stochastic MEPIS-particle impact electrochemistry and electrochemical impedance spectroscopy, we revealed that the enhanced electrode kinetics of I- oxidation in MEPIS can be attributed to the facilitated charge transfer of I3- oxidation in [I3-·(I2)n]. In addition, we found that the degree of freedom of I3- in a quaternary ammonium-based I2-F can also be critical to determine the kinetics of the electro-oxidation of I-, which is that MEPIS showed more enhanced charge-transfer kinetics of I- oxidation compared to tetrabutylammonium I3- due to the higher degree of freedom of I3-.
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Affiliation(s)
- Hyeonmin Kim
- Department of Chemistry and Research Institute for Convergence of Basic Science, Hanyang University, Seoul 04763, Republic of Korea
| | - Kyung Mi Kim
- Department of Chemistry, Sungshin Women's University, 55, Dobong-ro 76 ga-gil, Gangbuk-gu, Seoul 142-732, Republic of Korea
| | - Jungju Ryu
- Department of Chemistry and Research Institute for Convergence of Basic Science, Hanyang University, Seoul 04763, Republic of Korea
| | - Sehyeok Ki
- Department of Chemistry and Research Institute for Convergence of Basic Science, Hanyang University, Seoul 04763, Republic of Korea
| | - Daewon Sohn
- Department of Chemistry and Research Institute for Convergence of Basic Science, Hanyang University, Seoul 04763, Republic of Korea
| | - Junghyun Chae
- Department of Chemistry, Sungshin Women's University, 55, Dobong-ro 76 ga-gil, Gangbuk-gu, Seoul 142-732, Republic of Korea
| | - Jinho Chang
- Department of Chemistry and Research Institute for Convergence of Basic Science, Hanyang University, Seoul 04763, Republic of Korea
- Department of HY-KIST Bio-convergence, Hanyang University, Seoul 04763, Republic of Korea
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11
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Savastano M, Bazzicalupi C, Bianchi A. Novel cyclen-polyiodide complexes: a reappraisal of I-I covalent and secondary bond limits. Dalton Trans 2022; 51:10728-10739. [PMID: 35293413 DOI: 10.1039/d2dt00185c] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Supramolecular stabilization of polyiodides and iodine-dense phases is of high interest: this study explores the possibilities offered in this sense by diprotonated cyclen, affording two novel crystal structures. One of them contains at least one peculiar I⋯I interatomic distance (3.305(1) Å), falling well below the region commonly described by secondary bonding (3.4-3.7 Å) and essentially equal to the accepted limit for covalent bonding (3.30 Å): in other words, according to threshold distance values, we are relatively free to regard this interaction either as a bond or as contact. Lest the flip of a coin decides if we should or should not draw a bond in a polyiodide, statistical insights based on CSD surveys were used to put in perspective literature material and work out a meaningful assignment (as I82-). In doing so, we address how currently accepted threshold distance values came to be in the first place, their significance, soundness, and shortcomings in describing I82- and its formal fragments (I2, I3-, I5-). Discussion of the chemical meaning of the line representing bonding in I-I fragments in similar fringe cases, relating CSD data herein presented with the previous literature, is provided. Available information coincides quite well in supporting the necessity of a revision of broadly accepted threshold distance values.
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Affiliation(s)
- Matteo Savastano
- Department of Chemistry "Ugo Schiff", Via della Lastruccia 3, 50019 Sesto Fiorentino, Italy.
| | - Carla Bazzicalupi
- Department of Chemistry "Ugo Schiff", Via della Lastruccia 3, 50019 Sesto Fiorentino, Italy.
| | - Antonio Bianchi
- Department of Chemistry "Ugo Schiff", Via della Lastruccia 3, 50019 Sesto Fiorentino, Italy.
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12
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Unique Evolution of the Local Structure of 1-Butyl-3-methylimidazolium Iodide and Alcohol Mixtures: Formation of Triiodide Without the External Addition of Iodine. J SOLUTION CHEM 2022. [DOI: 10.1007/s10953-021-01135-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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13
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Nemoto F, Nakamura SY, Abe H. Surface structure of the mixture of 1-alkyl-3-methylimidazolium iodide and polyiodide observed by surface tension measurement and X-ray reflectivity. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116381] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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14
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Cavallo G, Abate A, Rosati M, Paolo Venuti G, Pilati T, Terraneo G, Resnati G, Metrangolo P. Tuning of Ionic Liquid Crystal Properties by Combining Halogen Bonding and Fluorous Effect. Chempluschem 2021; 86:469-474. [PMID: 33704927 DOI: 10.1002/cplu.202100046] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 03/02/2021] [Indexed: 01/08/2023]
Abstract
We report halogen-bonded complexes between 1-polyfluoroalkyl-3-alkylimidazolium iodides and mono-iodoperfluoroalkanes of different chain lengths or di-iodoperfluorooctane. 19 F NMR analyses revealed that the preferred stoichiometry between the donors and acceptors is 1 : 1 in the cases of the mono-iodoperfluoroalkanes, and 2 : 1 with di-iodoperfluorooctane, as a result of the monodentate behavior of the iodide anion (halogen bond acceptor). Single crystal X-ray diffraction analyses showed the presence of a perfluorinated superanion, which interdigitates with the cation fluorinated chains, favoring the formation of lamellar structures. All of the obtained supramolecular complexes exhibit enantiotropic liquid crystalline phases over a broad range of temperatures. Most of the obtained complexes show melting points lower than 100 °C, two of them being liquid at room temperature, thus representing a new family of fluorinated ionic liquid crystals.
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Affiliation(s)
- Gabriella Cavallo
- Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano, Via L. Mancinelli 7, 20131, Milano, Italy
| | - Antonio Abate
- Helmholtz-Zentrum Berlin für Materialien und Energie, Kekuléstraße 5, 12489, Berlin, Germany
| | - Marta Rosati
- Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano, Via L. Mancinelli 7, 20131, Milano, Italy
| | - Giovanni Paolo Venuti
- Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano, Via L. Mancinelli 7, 20131, Milano, Italy
| | - Tullio Pilati
- Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano, Via L. Mancinelli 7, 20131, Milano, Italy
| | - Giancarlo Terraneo
- Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano, Via L. Mancinelli 7, 20131, Milano, Italy
| | - Giuseppe Resnati
- Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano, Via L. Mancinelli 7, 20131, Milano, Italy
| | - Pierangelo Metrangolo
- Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano, Via L. Mancinelli 7, 20131, Milano, Italy
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15
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Narayanagari R, Vukka R, Chekuri R. Preparation and characterization of titanium oxide based poly (vinylidene fluoride-co-hexafluoropropylene) polymer electrolyte films. JOURNAL OF POLYMER RESEARCH 2021. [DOI: 10.1007/s10965-020-02391-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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16
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Takekiyo T, Yoshimura Y. Peculiar High-Pressure Phase Behavior of 1-Butyl-3-methylimidazolium Iodide. J Phys Chem B 2020; 124:7659-7667. [PMID: 32701280 DOI: 10.1021/acs.jpcb.0c04954] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We investigated the stability of the liquid phase of 1-butyl-3-methylimidazolium iodide (hereafter abbreviated as [C4mim][I]) up to 16.7 GPa at room temperature. We observed a peculiar phase transition behavior in the [C4mim][I] sample. In particular, a glassy state was formed at ∼1.3 GPa; however, the reddish-brown precipitate was formed probably due to concentrated I3- or I2- species that were formed above 12 GPa; [C4mim][I] showed a pressure-induced partial crystallization from the glassy state. We concluded that the conformation of [C4mim]+ is essential in iterative modulation to control the environmental formation of iodide precipitate.
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Affiliation(s)
- Takahiro Takekiyo
- Department of Applied Chemistry, National Defense Academy, 1-10-20, Hashirimizu, Yokosuka, Kanagawa 239-8686, Japan
| | - Yukihiro Yoshimura
- Department of Applied Chemistry, National Defense Academy, 1-10-20, Hashirimizu, Yokosuka, Kanagawa 239-8686, Japan
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17
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Mao Z, Ye Y, Lv H, Han XX, Park Y, Zang L, Zhao B, Jung YM. Direct Dynamic Evidence of Charge Separation in a Dye-Sensitized Solar Cell Obtained under Operando Conditions by Raman Spectroscopy. Angew Chem Int Ed Engl 2020; 59:10780-10784. [PMID: 32166873 DOI: 10.1002/anie.201915824] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Indexed: 11/09/2022]
Abstract
Interfaces play an important role in enhancing the energy conversion performance of dye-sensitized solar cells (DSCs). The interface effects have been studied by many techniques, but most of the studies only focused on one part of a DSC, rather than on a complete solar cell. Hence, monitoring the interface evolution of a DSC is still very challenging. Here, in situ/operando resonance Raman (RR) spectroscopic analyses were carried out to monitor the dynamics of the photovoltaic conversion processes in a DSC. We observed the creation of new species (i.e., polyiodide and iodine aggregates) in the photosensitization process. We also obtained molecular-scale dynamic evidence that the bands from the C=C and C=N bonds of 2,2'-bipyridyl (bpy), the S=C=N bonds of the NCS ligand, and photochemical products undergo reasonably strong intensity and frequency changes, which clearly demonstrates that they are involved in charge separation. Furthermore, RR spectroscopy can also be used to quickly evaluate the performance of DSCs.
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Affiliation(s)
- Zhu Mao
- School of Chemistry and Life Science, Advanced Institute of Materials Science, Changchun University of Technology, Changchun, 130012, P. R. China
| | - Yutong Ye
- School of Chemistry and Life Science, Advanced Institute of Materials Science, Changchun University of Technology, Changchun, 130012, P. R. China
| | - Haiming Lv
- Shaanxi Key Laboratory of Chemical Reaction Engineering, College of Chemistry and Chemical Engineering, Yan'an University, Yan'an, 716000, P. R. China
| | - Xiao Xia Han
- State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun, 130012, P. R. China
| | - Yeonju Park
- Department of Chemistry, Institute for Molecular Science and Fusion Technology, Kangwon National University, Chuncheon, 24341, Korea
| | - Libin Zang
- Department of Chemistry, Institute for Molecular Science and Fusion Technology, Kangwon National University, Chuncheon, 24341, Korea
| | - Bing Zhao
- State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun, 130012, P. R. China
| | - Young Mee Jung
- Department of Chemistry, Institute for Molecular Science and Fusion Technology, Kangwon National University, Chuncheon, 24341, Korea
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18
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Mao Z, Ye Y, Lv H, Han XX, Park Y, Zang L, Zhao B, Jung YM. Direct Dynamic Evidence of Charge Separation in a Dye‐Sensitized Solar Cell Obtained under Operando Conditions by Raman Spectroscopy. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201915824] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Zhu Mao
- School of Chemistry and Life ScienceAdvanced Institute of Materials ScienceChangchun University of Technology Changchun 130012 P. R. China
| | - Yutong Ye
- School of Chemistry and Life ScienceAdvanced Institute of Materials ScienceChangchun University of Technology Changchun 130012 P. R. China
| | - Haiming Lv
- Shaanxi Key Laboratory of Chemical Reaction EngineeringCollege of Chemistry and Chemical EngineeringYan'an University Yan'an 716000 P. R. China
| | - Xiao Xia Han
- State Key Laboratory of Supramolecular Structure and MaterialsJilin University Changchun 130012 P. R. China
| | - Yeonju Park
- Department of ChemistryInstitute for Molecular Science and Fusion TechnologyKangwon National University Chuncheon 24341 Korea
| | - Libin Zang
- Department of ChemistryInstitute for Molecular Science and Fusion TechnologyKangwon National University Chuncheon 24341 Korea
| | - Bing Zhao
- State Key Laboratory of Supramolecular Structure and MaterialsJilin University Changchun 130012 P. R. China
| | - Young Mee Jung
- Department of ChemistryInstitute for Molecular Science and Fusion TechnologyKangwon National University Chuncheon 24341 Korea
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19
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20
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Abe H, Tokita T, Iwata K, Ozawa S. Lithium-triggered spontaneous formation of polyiodides in room-temperature ionic liquid-alcohol solutions. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 212:255-261. [PMID: 30654323 DOI: 10.1016/j.saa.2018.12.049] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Revised: 12/10/2018] [Accepted: 12/27/2018] [Indexed: 06/09/2023]
Abstract
In this study, the effect of alcohol on polyiodide formation in room-temperature ionic liquid (RTIL) was examined by time evolutions of Raman spectra in the low-frequency region and by color changes of the sample. The RTIL was 1-methyl-3-propylimidazolium iodide, [C3mim][I]. Polyiodides develop in [C3mim][I]‑lithium salt-ethanol solutions (Abe et al., Chem. Phys. 502 (2018) 72.). Without the external addition of iodine or without an external electric field, the irreversible transformation from I- to I3- indicates that charge unbalancing was promoted by lithium ion. Polyiodide formations were not induced by sodium or potassium ions. Strong alcohol effects were observed directly by the time-dependent Raman bands in the low-frequency region.
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Affiliation(s)
- Hiroshi Abe
- Department of Materials Science and Engineering, National Defense Academy, Yokosuka 239-8686, Japan.
| | - Tsukasa Tokita
- Department of Chemistry, Faculty of Science, Gakushuin University, 1-5-1 Mejiro, Toshima-ku, Tokyo 171-8588, Japan
| | - Koichi Iwata
- Department of Chemistry, Faculty of Science, Gakushuin University, 1-5-1 Mejiro, Toshima-ku, Tokyo 171-8588, Japan
| | - Shinichiro Ozawa
- Department of Materials Science and Engineering, National Defense Academy, Yokosuka 239-8686, Japan
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21
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Investigation of the conduction properties of ionic liquid crystal electrolyte used in dye sensitized solar cells. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.01.010] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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22
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Ionic transport and interfacial interaction of iodide/iodine redox mechanism in agarose electrolyte containing colloidal titanium dioxide nanoparticles. J Photochem Photobiol A Chem 2018. [DOI: 10.1016/j.jphotochem.2018.01.034] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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23
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Kishimura H, Aono M, Kyuko Y, Nagaya S, Koyama S, Abe H. Spontaneous polyiodide formation by unbalancing of charge in room-temperature ionic liquid-lithium salt solutions. Chem Phys 2018. [DOI: 10.1016/j.chemphys.2018.01.021] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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24
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Quantitative determination of chemical species in high concentration ZnX2 (X = Br and I) media by steady state voltammetry on Pt ultramicroelectrode. J Electroanal Chem (Lausanne) 2018. [DOI: 10.1016/j.jelechem.2017.11.075] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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25
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Aono M, Miyazaki H, Takekiyo T, Tsuzuki S, Abe H. Optical absorption and photoconductivity in iodine-excess ionic liquids: the case of 1-alkyl-3-methyl imidazolium iodides. Phys Chem Chem Phys 2018; 20:5780-5784. [DOI: 10.1039/c7cp07387a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We investigated the optical absorption and photoconductivity of iodine-excess ionic liquids (ILs) based on 1-alkyl-3-methyl imidazolium iodide ([Cnmim][I]; n = 3, 4, and 6).
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Affiliation(s)
- Masami Aono
- Department of Materials Science and Engineering
- National Defense Academy
- Yokosuka
- Japan
| | - Hisashi Miyazaki
- Department of Materials Science and Engineering
- National Defense Academy
- Yokosuka
- Japan
| | - Takahiro Takekiyo
- Department of Applied Chemistry
- National Defense Academy
- Yokosuka
- Japan
| | - Seiji Tsuzuki
- Research Center for Computational Design of Advanced Functional Materials
- National Institute of Advanced Industrial Science and Technology
- Tsukuba
- Japan
| | - Hiroshi Abe
- Department of Materials Science and Engineering
- National Defense Academy
- Yokosuka
- Japan
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Abstract
Highly ionic environments can mediate unusual chemical reactions that would otherwise be considered impossible based on chemical intuition. For example, the formation of a chemical bond between two iodide anions to form a divalent polyiodide anion is seemingly prohibited due to Coulombic repulsion. Using ab initio molecular dynamics simulations, we show that in the 1-ethyl-3-methylimidazolium (EMIM)/I3 ionic crystal, the reactive formation of divalent and even trivalent polyiodide anions occurs with extremely small energetic barriers, due to the electrostatic field of the ionic lattice. A practical consequence of this anomalous reactivity is that iodide anions are efficiently transported within the crystal through a "Grotthuss-exchange" mechanism involving bond-breaking and forming events. We characterize two distinct transport pathways, involving both I42- and I73- intermediates, with fast transport of iodide resulting from the release of an I- anion on the opposite side of the intermediate species from the initial bond formation. The ordered cation arrangement in the crystal provides the necessary electrostatic screening for close approach of anions, suggesting a new counterintuitive approach to obtain high ionic conductivity. This new design principle could be used to develop better solid-state electrolytes for batteries, fuel cells, and supercapacitors.
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Affiliation(s)
- Jesse G McDaniel
- Department of Chemistry, University of Wisconsin , Madison, Wisconsin 53706, United States
| | - Arun Yethiraj
- Department of Chemistry, University of Wisconsin , Madison, Wisconsin 53706, United States
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27
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Tan C. Self-assembly, aggregates morphology and ionic liquid crystal of polyoxometalate-based hybrid molecule: From vesicles to layered structure. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2017.07.018] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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28
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Synthesis of hexamethylene-1,6-dicarbamate by methoxycarbonylation of 1,6-hexamethylene diamine with dimethyl carbonate over bulk and hybrid heteropoly acid catalyst. RESEARCH ON CHEMICAL INTERMEDIATES 2017. [DOI: 10.1007/s11164-017-3030-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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29
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Li Z, Xu J, Chen L, Zhang R, Yang X, Xia J. Influence of Sheet Resistance Effect on Poly(3,4-ethylenedioxythiophene) Counter Electrode for Dye-Sensitized Solar Cell. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2017.04.172] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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30
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Santana Andrade MA, Tiihonen A, Miettunen K, Lund P, Nogueira AF, Pastore HO. Gel Electrolytes with Polyamidopyridine Dendron Modified Talc for Dye-Sensitized Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2017; 9:20454-20466. [PMID: 28574246 DOI: 10.1021/acsami.7b00897] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Organic-inorganic hybrid layered materials are proposed as additives in a quasi-solid gel electrolyte for dye-sensitized solar cells. Talcs could provide a low-cost and environmentally friendly, as well as abundant, option as gelators. Here, talcs were prepared by functionalizing an organotalc with three polyamidopyridine dendron generations, PAMPy-talc-Gn (n = 1, 2 and 3). PAMPy dendrons grow parallel to the lamellae plane and form an organized structure by intermolecular interactions. In addition, polyiodide-dendron charge-transfer complexes were prepared onto the organotalc by adsorption of iodine. In this work, the effect of the dendron generation of PAMPy-talc and the influence of polyiodide intercalation on solar cell performance and stability were investigated. The best results were reached with the use of lowest-generation PAMPy-talc (η = 4.5 ± 0.3%, VOC = 710 ± 19 mV, Jsc = 10.4 ± 0.9 mA cm-2, and FF = 61 ± 2%): 15% higher efficiency compared to similar liquid devices. While some previously studied talcs illustrate very strong absorption of the iodide from the electrolyte, in the case of PAMPy-talc such interfering effects were absent: In a 1000 h light soaking test, the PAMPy-talc cells both with and without polyiodide intercalation demonstrated stable performances. Furthermore, the color analysis of the electrolyte indicated that the color of the electrolyte remained stable after an initial period of stabilization, which is a good indication of the compound being stable and not absorbing charge carriers from the electrolyte. The performance and stability results indicate that PAMPy-talc has potential as a gelling method for electrolytes for dye solar cells.
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Affiliation(s)
| | - Armi Tiihonen
- Department of Applied Physics, New Energy Technologies Group , P.O. Box 15100, FIN-00076 Aalto, Finland
| | - Kati Miettunen
- Department of Applied Physics, New Energy Technologies Group , P.O. Box 15100, FIN-00076 Aalto, Finland
| | - Peter Lund
- Department of Applied Physics, New Energy Technologies Group , P.O. Box 15100, FIN-00076 Aalto, Finland
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31
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Lv K, Zhang W, Zhang L, Wang ZS. POSS-Based Electrolyte for Efficient Solid-State Dye-Sensitized Solar Cells at Sub-Zero Temperatures. ACS APPLIED MATERIALS & INTERFACES 2016; 8:5343-5350. [PMID: 26860035 DOI: 10.1021/acsami.5b12353] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
To expand the application of solid-state dye-sensitized solar cells (ssDSSCs) to low temperatures, it is necessary to develop new solid electrolytes with low glass transition temperature (Tg). The Tg is regulated by varying the length of alkyl chain that is connected with the nitrogen atom in the imidazolium ring linked to the polyhedral oligomeric silsesquioxane (POSS). The Tg as low as -8.8 °C is achieved with the POSS grafted with methyl-substituted imidazolium. The effect of alkyl group on the conductivity, Tg, and photovoltaic performance has also been investigated. The conductivity and power conversion efficiency increase with the alkyl length, while the Tg first increases and then decreases with the alkyl length. Among the synthesized POSS-based ionic conductors, the POSS grafted with the methyl-substituted imidazolium yields the highest power conversion efficiency of 6.98% at RT due to its highest conductivity, and the efficiency (6.52%) is still good at -4 °C, as its Tg (-8.8 °C) is lower than the working temperature (-4 °C). This finding suggests that the POSS-based solid electrolyte is promising for subzero-temperature applications of ssDSSCs.
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Affiliation(s)
- Kai Lv
- Department of Chemistry, Lab of Advanced Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University , 2205 Songhu Road, Shanghai 200438, P. R. China
| | - Wei Zhang
- Department of Chemistry, Lab of Advanced Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University , 2205 Songhu Road, Shanghai 200438, P. R. China
| | - Lu Zhang
- Department of Chemistry, Lab of Advanced Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University , 2205 Songhu Road, Shanghai 200438, P. R. China
| | - Zhong-Sheng Wang
- Department of Chemistry, Lab of Advanced Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University , 2205 Songhu Road, Shanghai 200438, P. R. China
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32
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Abe H, Aono M, Kiyotani T, Tsuzuki S. Polyiodides in room-temperature ionic liquids. Phys Chem Chem Phys 2016; 18:32337-32344. [DOI: 10.1039/c6cp06846d] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Polyiodides, Im−, were formed in room-temperature ionic liquids (RTILs).
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Affiliation(s)
- Hiroshi Abe
- Department of Materials Science and Engineering
- National Defense Academy
- Yokosuka 239-8686
- Japan
| | - Masami Aono
- Department of Materials Science and Engineering
- National Defense Academy
- Yokosuka 239-8686
- Japan
| | | | - Seiji Tsuzuki
- National Institute of Advanced Industrial Science and Technology
- Ibaraki 305-8568
- Japan
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33
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Ionic conductivities of 1-methyl-3-propylimidazolium iodide. ELECTROCHEMISTRY 2016. [DOI: 10.1007/978-3-642-02723-9_858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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34
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Fei Z, Bobbink FD, Păunescu E, Scopelliti R, Dyson PJ. Influence of Elemental Iodine on Imidazolium-Based Ionic Liquids: Solution and Solid-State Effects. Inorg Chem 2015; 54:10504-12. [PMID: 26465973 DOI: 10.1021/acs.inorgchem.5b02021] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Ionic liquids doped with I2, usually resulting in the formation of polyiodide anions, are extensively used as electrolytes and in iodination reactions. Herein, NMR spectroscopy and single-crystal X-ray diffraction were used to rationalize the structures of imidazolium-based polyiodide ionic liquids in the liquid and solid states. Combined, these studies show that extensive interactions between the imidazolium cation and the resulting polyiodide anion are present, which have the net effect of lengthening, polarizing, and weakening the I-I bonds in the anion. This bond weakening rationalizes the high conductivity and reactivity of ionic liquids doped with I2.
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Affiliation(s)
- Zhaofu Fei
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL) , CH-1015 Lausanne, Switzerland
| | - Félix D Bobbink
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL) , CH-1015 Lausanne, Switzerland
| | - Emilia Păunescu
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL) , CH-1015 Lausanne, Switzerland
| | - Rosario Scopelliti
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL) , CH-1015 Lausanne, Switzerland
| | - Paul J Dyson
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL) , CH-1015 Lausanne, Switzerland
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35
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Wu J, Lan Z, Lin J, Huang M, Huang Y, Fan L, Luo G. Electrolytes in dye-sensitized solar cells. Chem Rev 2015; 115:2136-73. [PMID: 25629644 DOI: 10.1021/cr400675m] [Citation(s) in RCA: 369] [Impact Index Per Article: 41.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Jihuai Wu
- Engineering Research Center of Environment-Friendly Functional Materials, Ministry of Education, Institute of Materials Physical Chemistry, Huaqiao University , Quanzhou, Fujian 362021, China
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36
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Chang HC, Jiang JC, Kuo MH, Hsu DT, Lin SH. Pressure-enhanced surface interactions between nano-TiO2 and ionic liquid mixtures probed by high pressure IR spectroscopy. Phys Chem Chem Phys 2015; 17:21143-8. [DOI: 10.1039/c4cp04768k] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The formation of pressure-enhanced C–H⋯nano-TiO2 interactions around the C–H groups was observed.
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Affiliation(s)
- Hai-Chou Chang
- Department of Chemistry
- National Dong Hwa University
- Shoufeng
- Taiwan
| | - Jyh-Chiang Jiang
- Department of Chemical Engineering
- National Taiwan University of Science and Technology
- Taipei 106
- Taiwan
| | - Meng-Hsiu Kuo
- Department of Chemistry
- National Dong Hwa University
- Shoufeng
- Taiwan
| | - Ding-Tsai Hsu
- Department of Chemistry
- National Dong Hwa University
- Shoufeng
- Taiwan
| | - Sheng Hsien Lin
- Department of Applied Chemistry
- National Chiao Tung University
- Hsinchu 30010
- Taiwan
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37
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Yushina ID, Kolesov BA, Bartashevich EV. Raman spectroscopy study of new thia- and oxazinoquinolinium triodides. NEW J CHEM 2015. [DOI: 10.1039/c5nj00497g] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
New polyiodides of thia- and oxa-zinoquinolinium derivatives were characterized using Raman spectroscopy and periodic 3D calculations of the Raman intensities. Polarized Raman spectra of the oriented crystals revealed the features of spatial organization in the polyiodide-anion chains.
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Affiliation(s)
- Irina D. Yushina
- Chemistry Department
- South Ural State University (National Research University)
- Chelyabinsk
- Russia
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38
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Klimavicius V, Gdaniec Z, Balevicius V. Very short NMR relaxation times of anions in ionic liquids: new pulse sequence to eliminate the acoustic ringing. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 132:879-883. [PMID: 24938418 DOI: 10.1016/j.saa.2014.04.140] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2013] [Revised: 03/10/2014] [Accepted: 04/23/2014] [Indexed: 06/03/2023]
Abstract
NMR relaxation processes of anions were studied in two neat imidazolium-based room temperature ionic liquids (RTILs) 1-decyl-3-methyl-imidazolium bromide- and chloride. The spin-lattice and spin-spin relaxations of 81Br and 35Cl nuclei were found to be extremely fast due to very strong quadrupolar interactions. The determined relaxation rates are comparable with those observed in the solids or in some critical organic solute/water/salt systems. In order to eliminate the acoustic ringing of the probe-head during relaxation times measurements the novel pulse sequence has been devised. It is based on the conventional inversion recovery pulse sequence, however, instead of the last 90° pulse the subsequence of three 90° pulses applied along axes to fulfill the phase cycling condition is used. Using this pulse sequence it was possible to measure T1 for both studied nuclei. The viscosity measurements have been carried out and the rotational correlation times were calculated. The effective 35Cl quadrupolar coupling constant was found to be almost one order lower than that for 81Br, i.e. 1.8 MHz and 16.0 MHz, respectively. Taking into account the facts that the ratio of (Q(35Cl)/Q(81Br))2≈0.1 and EFG tensors on the anions are quite similar, analogous structural organizations are expected for both RTILs. The observed T1/T2 (1.27-1.44) ratios were found to be not sufficiently high to confirm the presence of long-living (on the time scale of ≥10(-8) s) mesoscopic structures or heterogeneities in the studied neat ionic liquids.
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Affiliation(s)
- Vytautas Klimavicius
- Department of General Physics and Spectroscopy, Vilnius University, Sauletekio 9-3, LT-10222 Vilnius, Lithuania.
| | - Zofia Gdaniec
- Institute of Bioorganic Chemistry, Polish Academy of Sciences, Z. Noskowskiego 12/14, PL-61704 Poznan, Poland.
| | - Vytautas Balevicius
- Department of General Physics and Spectroscopy, Vilnius University, Sauletekio 9-3, LT-10222 Vilnius, Lithuania.
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39
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Zhang W, Wang ZS. Synthesis of POSS-based ionic conductors with low glass transition temperatures for efficient solid-state dye-sensitized solar cells. ACS APPLIED MATERIALS & INTERFACES 2014; 6:10714-10721. [PMID: 24933357 DOI: 10.1021/am502556y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Replacing liquid-state electrolytes with solid-state electrolytes has been proven to be an effective way to improve the durability of dye-sensitized solar cells (DSSCs). We report herein the synthesis of amorphous ionic conductors based on polyhedral oligomeric silsesquioxane (POSS) with low glass transition temperatures for solid-state DSSCs. As the ionic conductor is amorphous and in the elastomeric state at the operating temperature of DSSCs, good pore filling in the TiO2 film and good interfacial contact between the solid-state electrolyte and the TiO2 film can be guaranteed. When the POSS-based ionic conductor containing an allyl group is doped with only iodine as the solid-state electrolyte without any other additives, power conversion efficiency of 6.29% has been achieved with good long-term stability under one-sun soaking for 1000 h.
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Affiliation(s)
- Wei Zhang
- Department of Chemistry, Lab of Advanced Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University , 2205 Songhu Road, Shanghai 200438, P. R. China
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40
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Effects of water-based gel electrolyte on the charge recombination and performance of dye-sensitized solar cells. J Solid State Electrochem 2014. [DOI: 10.1007/s10008-014-2508-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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41
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Zhang W, Li J, Jiang S, Wang ZS. POSS with eight imidazolium iodide arms for efficient solid-state dye-sensitized solar cells. Chem Commun (Camb) 2014; 50:1685-7. [DOI: 10.1039/c3cc48615j] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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42
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Wang H, Li J, Gong F, Zhou G, Wang ZS. Ionic conductor with high conductivity as single-component electrolyte for efficient solid-state dye-sensitized solar cells. J Am Chem Soc 2013; 135:12627-33. [PMID: 23909762 DOI: 10.1021/ja401827w] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Imidazolium iodide is an often used component in iodine-based dye-sensitized solar cells (DSSCs), but it cannot operate an efficient DSSC in the absence of iodine due to its low conductivity. For this study, lamellar solid iodide salts of imidazolium or piperidinium with an N-substituted propargyl group have been prepared and applied in solid-state DSSCs. Owing to the high conductivity arising from the lamellar structure, these solid-state ionic conductors can be used as single-component solid electrolytes to operate solid-state DSSCs efficiently without any additives in the electrolyte and post-treatments on the dye-loaded TiO2 films. With a propargyl group attached to the imidazolium ring, the conductivity is enhanced by about 4 × 10(4)-fold as compared to the alkyl-substituted imidazolium iodide. Solid-state DSSC with the 1-propargyl-3-methylimidazolium iodide as the single-component solid-state electrolyte has achieved a light-to-electricity power conversion efficiency of 6.3% under illumination of simulated AM1.5G solar light (100 mW cm(-2)), which also exhibits good long-term stability under continuous 1 sun soaking for 1500 h. This finding paves the way for development of high-conductivity single-component solid electrolytes for use in efficient solid-state DSSCs.
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Affiliation(s)
- Hong Wang
- Department of Chemistry, Lab of Advanced Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University, Songhu Road 2205, 200438 Shanghai, PR China
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Li J, Wang H, Zhou G, Wang ZS. Hydroxyethyl and ester co-functionalized imidazolium iodide for highly efficient solid-state dye-sensitized solar cells. Chem Commun (Camb) 2013; 49:9446-8. [DOI: 10.1039/c3cc44940h] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Wu C, Guo S, Jia L, Han S, Chi B, Pu J, Jian L. Mechanistic insight into the individual ionic transportation in polymer electrolytes for use in dye-sensitized solar cells. RSC Adv 2013. [DOI: 10.1039/c3ra40309b] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Nishiyama Y, Terazima M, Kimura Y. Ultrafast Relaxation and Reaction of Diiodide Anion after Photodissociation of Triiodide in Room-Temperature Ionic Liquids. J Phys Chem B 2012; 116:9023-32. [DOI: 10.1021/jp212299c] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yoshio Nishiyama
- Department of Chemistry, Graduate
School of Science, Kyoto University, Kyoto
606-8502, Japan
| | - Masahide Terazima
- Department of Chemistry, Graduate
School of Science, Kyoto University, Kyoto
606-8502, Japan
| | - Yoshifumi Kimura
- Department of Chemistry, Graduate
School of Science, Kyoto University, Kyoto
606-8502, Japan
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47
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Composite electrolytes based on poly(ethylene oxide) and binary ionic liquids for dye-sensitized solar cells. Sci China Chem 2012. [DOI: 10.1007/s11426-012-4635-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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48
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Tavakoli-Hoseini N, Davoodnia A. A New Phosphotungstic Acid Salt, [Et3NH]3PW12O40: Synthesis, Characterization and Its Application as Catalyst in the Synthesis of 4(3H)-Quinazolinones. ACTA ACUST UNITED AC 2012. [DOI: 10.1080/15533174.2011.609232] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Affiliation(s)
| | - Abolghasem Davoodnia
- a Department of Chemistry, Mashhad Branch , Islamic Azad University , Mashhad , Iran
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Lungwitz R, Spange S. Determination of hydrogen-bond-accepting and -donating abilities of ionic liquids with halogeno complex anions by means of 1H NMR spectroscopy. Chemphyschem 2012; 13:1910-6. [PMID: 22287278 DOI: 10.1002/cphc.201100832] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2011] [Indexed: 11/11/2022]
Abstract
Hydrogen-bond-accepting (HBA) and -donating (HBD) parameters of ionic liquids (ILs) with halogeno complex anions are determined by means of (1)H NMR spectroscopy. Thereby, the imidazolium cation serves both as part of the IL and as (1)H NMR probe. The HBA and HBD strength are calculated in terms of the empirical polarity parameters β and α according to the Kamlet-Taft equation. The study includes 1-butyl-3-methylimidazolium ILs with chloroaluminates of various mole fractions from 0 to 0.67 of AlCl(3), anions of the general chemical formula MtX(n)(-) (Mt=metal, X=halide) as well as tri- and pentaiodide. The (1)H NMR chemical shift of the hydrogen atom in the two position of the imidazolium cation is a function of the HBA ability of the corresponding anion. For the chloroaluminates the HBA ability decreases and the HBD ability increases with increasing mole fraction of the Lewis acid. In general, the HBA strength of the studied ILs increases in the following order: MoCl(6)(-) < Al(2)Cl(7)(-) < AlCl(4)(-) < WCl(7)(-) < I(5)(-) < SnCl(5)(-) < I(3)(-) < SbCl(6)(-) < TiCl(5)(-) < BBr(4)(-) < SnCl(3)(-). The corresponding HBD ability shows a reverse trend.
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Affiliation(s)
- Ralf Lungwitz
- Department of Polymer Chemistry, Chemnitz University of Technology, Strasse der Nationen 62, 09111 Chemnitz, Germany
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Jovanovski V, González-Pedro V, Giménez S, Azaceta E, Cabañero G, Grande H, Tena-Zaera R, Mora-Seró I, Bisquert J. A Sulfide/Polysulfide-Based Ionic Liquid Electrolyte for Quantum Dot-Sensitized Solar Cells. J Am Chem Soc 2011; 133:20156-9. [DOI: 10.1021/ja2096865] [Citation(s) in RCA: 141] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Vasko Jovanovski
- CIDETEC-IK4, Paseo Miramón 196,
20009 Donostia/San Sebastian, Spain
- Analytical Chemistry Laboratory, National Institute of Chemistry, Hajdrihova 19, 1000
Ljubljana, Slovenia
| | - Victoria González-Pedro
- Photovoltaic
and Optoelectronic
Devices Group, Departament de Física, Universitat Jaume I, 12071 Castelló, Spain
| | - Sixto Giménez
- Photovoltaic
and Optoelectronic
Devices Group, Departament de Física, Universitat Jaume I, 12071 Castelló, Spain
| | - Eneko Azaceta
- CIDETEC-IK4, Paseo Miramón 196,
20009 Donostia/San Sebastian, Spain
| | - Germán Cabañero
- CIDETEC-IK4, Paseo Miramón 196,
20009 Donostia/San Sebastian, Spain
| | - Hans Grande
- CIDETEC-IK4, Paseo Miramón 196,
20009 Donostia/San Sebastian, Spain
| | - Ramon Tena-Zaera
- CIDETEC-IK4, Paseo Miramón 196,
20009 Donostia/San Sebastian, Spain
| | - Iván Mora-Seró
- Photovoltaic
and Optoelectronic
Devices Group, Departament de Física, Universitat Jaume I, 12071 Castelló, Spain
| | - Juan Bisquert
- Photovoltaic
and Optoelectronic
Devices Group, Departament de Física, Universitat Jaume I, 12071 Castelló, Spain
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