101
|
Fan K, Li F, Wang L, Daniel Q, Gabrielsson E, Sun L. Pt-free tandem molecular photoelectrochemical cells for water splitting driven by visible light. Phys Chem Chem Phys 2014; 16:25234-40. [DOI: 10.1039/c4cp04489d] [Citation(s) in RCA: 121] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
|
102
|
Spettel KE, Damrauer NH. Synthesis, electrochemical characterization, and photophysical studies of structurally tuned aryl-substituted terpyridyl ruthenium(II) complexes. J Phys Chem A 2014; 118:10649-62. [PMID: 25182073 DOI: 10.1021/jp508145w] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Synthesis, electrochemical potentials, static emission, and temperature-dependent excited-state lifetimes of several 4'-aryl-substituted terpyridyl complexes of ruthenium(II) are reported. Synthetic tuning is explored within three conceptual series of complexes. The first series explores the impact of introducing a strong σ-donating 4,4',4″-tri-tert-butyl-2,2':6',2″-terpyridine (tbtpy) opposite to an arylated terpyridine ligand 4'-(4-methylphenyl)-2,2':6',2″-terpyridine (ttpy). It is found that (3)MLCT (triplet metal-to-ligand charge-transfer state) stabilization concomitant with (3)MC (triplet metal-centered state) destabilization in the heteroleptic parent complex [Ru(ttpy)(tbtpy)](2+) leads to an extended excited-state lifetime relative to the structurally related bis-homoleptic species [Ru(ttpy)2](2+). The second series explores the impact of introducing a carboxylic acid or a methyl ester moiety at the para-position of the arylterpyridyl ligand (R1 = R2 = H) within heteroleptic complexes as a platform for future semiconductor attachment studies. This substitution leads to further lifetime enhancements, understood as arising from (3)MLCT stabilization. Such complexes are referred to as [Ru(1)(tbtpy)](2+) (for the acid at R3) and [Ru(1')(tbtpy)](2+) (for the ester at R3). In the final series, methyl substituents are sequentially added at the R1 and R2 positions for both the acid ([Ru(2)(tbtpy)](2+) and [Ru(3)(tbtpy)](2+)) and ester ([Ru(2')(tbtpy)](2+) and [Ru(3')(tbtpy)](2+)) analogues to eventually explore dynamical electron transfer coupling at dye/semiconductor interfaces. In these complexes, sequential addition of steric bulk decreases excited state lifetimes. This can be understood to arise primarily from the increase of the (3)MLCT level, as excited-state electron delocalization is limited by inter-ring twisting in the lower-energy arylated ligand. The introduction of a dimethylated sterically encumbered ligand lead to a notable 14-fold increase in knr from [Ru(1')(tbtpy)](2+) to [Ru(3')(tbtpy)](2+) (or [Ru(1)(tbtpy)](2+) to [Ru(3)(tbtpy)](2+)).
Collapse
Affiliation(s)
- Karen E Spettel
- Department of Chemistry and Biochemistry, University of Colorado-Boulder , Boulder, Colorado 80309, United States
| | | |
Collapse
|
103
|
Pallavicini P, Dacarro G, Diaz-Fernandez YA, Taglietti A. Coordination chemistry of surface-grafted ligands for antibacterial materials. Coord Chem Rev 2014. [DOI: 10.1016/j.ccr.2014.04.013] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
|
104
|
Synthesis of bifunctional Ru complexes with 1,2-dithiolane and carboxylate-substituted ligands. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.04.042] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
105
|
Swierk JR, McCool NS, Saunders TP, Barber GD, Mallouk TE. Effects of electron trapping and protonation on the efficiency of water-splitting dye-sensitized solar cells. J Am Chem Soc 2014; 136:10974-82. [PMID: 25068176 DOI: 10.1021/ja5040705] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Water-splitting dye-sensitized photoelectrochemical (WS-DSPECs) cells employ molecular sensitizers to absorb light and transport holes across the TiO2 surface to colloidal or molecular water oxidation catalysts. As hole diffusion occurs along the surface, electrons are transported through the mesoporous TiO2 film. In this paper we report the effects of electron trapping and protonation in the TiO2 film on the dynamics of electron and hole transport in WS-DSPECs. When the sensitizer bis(2,2'-bipyridine)(4,4'-diphosphonato-2,2'-bipyridine)ruthenium(II) is adsorbed from aqueous acid instead of from ethanol, there is more rapid hole transfer between photo-oxidized sensitizer molecules that are adsorbed from strong acid. However, the photocurrent and open-circuit photovoltage are dramatically lower with sensitizers adsorbed from acid because intercalated protons charge-compensate electron traps in the TiO2 film. Kinetic modeling of the photocurrent shows that electron trapping is responsible for the rapid electrode polarization that is observed in all WS-DSPECs. Electrochemical impedance spectroscopy suggests that proton intercalation also plays an important role in the slow degradation of WS-DSPECs, which generate protons at the anode as water is oxidized to oxygen.
Collapse
Affiliation(s)
- John R Swierk
- Department of Chemistry, The Pennsylvania State University , University Park, Pennsylvania 16802, United States
| | | | | | | | | |
Collapse
|
106
|
Kroll A, Monczak K, Sorsche D, Rau S. A Luminescent Ruthenium Azide Complex as a Substrate for Copper-Catalyzed Click Reactions. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201402395] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
107
|
Song W, Vannucci AK, Farnum BH, Lapides AM, Brennaman MK, Kalanyan B, Alibabaei L, Concepcion JJ, Losego MD, Parsons GN, Meyer TJ. Visible Light Driven Benzyl Alcohol Dehydrogenation in a Dye-Sensitized Photoelectrosynthesis Cell. J Am Chem Soc 2014; 136:9773-9. [DOI: 10.1021/ja505022f] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Wenjing Song
- Department
of Chemistry, University of North Carolina at Chapel Hill, CB3290, Chapel Hill, North Carolina 27599, United States
| | - Aaron K. Vannucci
- Department
of Chemistry, University of North Carolina at Chapel Hill, CB3290, Chapel Hill, North Carolina 27599, United States
| | - Byron H. Farnum
- Department
of Chemistry, University of North Carolina at Chapel Hill, CB3290, Chapel Hill, North Carolina 27599, United States
| | - Alexander M. Lapides
- Department
of Chemistry, University of North Carolina at Chapel Hill, CB3290, Chapel Hill, North Carolina 27599, United States
| | - M. Kyle Brennaman
- Department
of Chemistry, University of North Carolina at Chapel Hill, CB3290, Chapel Hill, North Carolina 27599, United States
| | - Berç Kalanyan
- Department
of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - Leila Alibabaei
- Department
of Chemistry, University of North Carolina at Chapel Hill, CB3290, Chapel Hill, North Carolina 27599, United States
| | - Javier J. Concepcion
- Department
of Chemistry, University of North Carolina at Chapel Hill, CB3290, Chapel Hill, North Carolina 27599, United States
| | - Mark D. Losego
- Department
of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - Gregory N. Parsons
- Department
of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - Thomas J. Meyer
- Department
of Chemistry, University of North Carolina at Chapel Hill, CB3290, Chapel Hill, North Carolina 27599, United States
| |
Collapse
|
108
|
Stalder R, Xie D, Islam A, Han L, Reynolds JR, Schanze KS. Panchromatic donor-acceptor-donor conjugated oligomers for dye-sensitized solar cell applications. ACS APPLIED MATERIALS & INTERFACES 2014; 6:8715-22. [PMID: 24807377 DOI: 10.1021/am501515s] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
We report on a sexithienyl and two donor-acceptor-donor oligothiophenes, employing benzothiadiazole and isoindigo as electron-acceptors, each functionalized with a phosphonic acid group for anchoring onto TiO2 substrates as light-harvesting molecules for dye sensitized solar cells (DSSCs). These dyes absorb light to wavelengths as long as 700 nm, as their optical HOMO/LUMO energy gaps are reduced from 2.40 to 1.77 eV with increasing acceptor strength. The oligomers were adsorbed onto mesoporous TiO2 films on fluorine doped tin oxide (FTO)/glass substrates and incorporated into DSSCs, which show AM1.5 power conversion efficiencies (PCEs) ranging between 2.6% and 6.4%. This work demonstrates that the donor-acceptor-donor (D-A-D) molecular structures coupled to phosphonic acid anchoring groups, which have not been used in DSSCs, can lead to high PCEs.
Collapse
Affiliation(s)
- Romain Stalder
- Department of Chemistry, Center for Macromolecular Science and Engineering, University of Florida , Gainesville, Florida 32611, United States
| | | | | | | | | | | |
Collapse
|
109
|
Murakami TN, Yoshida E, Koumura N. Carbazole dye with phosphonic acid anchoring groups for long-term heat stability of dye-sensitized solar cells. Electrochim Acta 2014. [DOI: 10.1016/j.electacta.2013.12.013] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
110
|
Klepser BM, Bartlett BM. Anchoring a Molecular Iron Catalyst to Solar-Responsive WO3 Improves the Rate and Selectivity of Photoelectrochemical Water Oxidation. J Am Chem Soc 2014; 136:1694-7. [DOI: 10.1021/ja4086808] [Citation(s) in RCA: 141] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Benjamin M. Klepser
- Department
of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
| | - Bart M. Bartlett
- Department
of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
| |
Collapse
|
111
|
Gross M, Reynal A, Durrant JR, Reisner E. Versatile photocatalytic systems for H2 generation in water based on an efficient DuBois-type nickel catalyst. J Am Chem Soc 2014; 136:356-66. [PMID: 24320740 PMCID: PMC3901378 DOI: 10.1021/ja410592d] [Citation(s) in RCA: 207] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2013] [Indexed: 02/08/2023]
Abstract
The generation of renewable H2 through an efficient photochemical route requires photoinduced electron transfer (ET) from a light harvester to an efficient electrocatalyst in water. Here, we report on a molecular H2 evolution catalyst (NiP) with a DuBois-type [Ni(P2(R')N2(R"))2](2+) core (P2(R')N2(R") = bis(1,5-R'-diphospha-3,7-R"-diazacyclooctane), which contains an outer coordination sphere with phosphonic acid groups. The latter functionality allows for good solubility in water and immobilization on metal oxide semiconductors. Electrochemical studies confirm that NiP is a highly active electrocatalyst in aqueous electrolyte solution (overpotential of approximately 200 mV at pH 4.5 with a Faradaic yield of 85 ± 4%). Photocatalytic experiments and investigations on the ET kinetics were carried out in combination with a phosphonated Ru(II) tris(bipyridine) dye (RuP) in homogeneous and heterogeneous environments. Time-resolved luminescence and transient absorption spectroscopy studies confirmed that directed ET from RuP to NiP occurs efficiently in all systems on the nano- to microsecond time scale, through three distinct routes: reductive quenching of RuP in solution or on the surface of ZrO2 ("on particle" system) or oxidative quenching of RuP when the compounds were immobilized on TiO2 ("through particle" system). Our studies show that NiP can be used in a purely aqueous solution and on a semiconductor surface with a high degree of versatility. A high TOF of 460 ± 60 h(-1) with a TON of 723 ± 171 for photocatalytic H2 generation with a molecular Ni catalyst in water and a photon-to-H2 quantum yield of approximately 10% were achieved for the homogeneous system.
Collapse
Affiliation(s)
- Manuela
A. Gross
- Christian Doppler Laboratory for Sustainable
SynGas Chemistry, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K.
| | - Anna Reynal
- Department of Chemistry, Imperial College
London, Exhibition Road, London SW7 2AZ, U.K.
| | - James R. Durrant
- Department of Chemistry, Imperial College
London, Exhibition Road, London SW7 2AZ, U.K.
| | - Erwin Reisner
- Christian Doppler Laboratory for Sustainable
SynGas Chemistry, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K.
| |
Collapse
|
112
|
Gao Y, Zhang L, Ding X, Sun L. Artificial photosynthesis – functional devices for light driven water splitting with photoactive anodes based on molecular catalysts. Phys Chem Chem Phys 2014; 16:12008-13. [DOI: 10.1039/c3cp55204g] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
|
113
|
Luitel T, Zamborini FP. Covalent modification of photoanodes for stable dye-sensitized solar cells. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:13582-94. [PMID: 24087979 DOI: 10.1021/la402256v] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
This paper describes the surface modification of TiO2 with 3-aminopropyltriethoxysilane (APTES) followed by covalent attachment of Ru-based N719 dye molecules to TiO2 through an amide linkage for use as photoanodes (PAs) in dye-sensitized solar cells (DSSCs). Attenuated total reflectance-Fourier transform infrared spectroscopy (ATR-FTIR) confirms the surface chemistry between the TiO2 and dye. The photovoltaic efficiency of DSSCs with covalently linked dye is very similar (6-7%) to that of traditionally prepared DSSCs prepared by direct immersion when both have similar dye coverage. Importantly, the efficiency of PAs with covalently linked dye did not change after storage for more than 60 days in air, whereas the traditionally prepared PAs decreased dramatically after 1 day and lost most of their efficiency after a week. FTIR and UV-vis characterization of the dye suggests that covalent linkage improves stability by preventing the loss of the thiocyanato ligands and/or tetrabutylammonium cations on the dye. PAs with covalently linked dye are also more stable toward water, acid, heat, and UV light compared to traditionally prepared PAs and are more stable compared to other modified PAs with dye attached through electrostatic or hydrogen-bonding interactions.
Collapse
Affiliation(s)
- Tulashi Luitel
- Department of Chemistry, University of Louisville , Louisville, Kentucky 40292, United States
| | | |
Collapse
|
114
|
Norris MR, Concepcion JJ, Glasson CRK, Fang Z, Lapides AM, Ashford DL, Templeton JL, Meyer TJ. Synthesis of Phosphonic Acid Derivatized Bipyridine Ligands and Their Ruthenium Complexes. Inorg Chem 2013; 52:12492-501. [DOI: 10.1021/ic4014976] [Citation(s) in RCA: 97] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Michael R. Norris
- Department
of Chemistry, University of North Carolina at Chapel Hill, CB 3290, Chapel Hill, North Carolina 27599, United States
| | - Javier J. Concepcion
- Department
of Chemistry, University of North Carolina at Chapel Hill, CB 3290, Chapel Hill, North Carolina 27599, United States
| | - Christopher R. K. Glasson
- Department
of Chemistry, University of North Carolina at Chapel Hill, CB 3290, Chapel Hill, North Carolina 27599, United States
| | - Zhen Fang
- Department
of Chemistry, University of North Carolina at Chapel Hill, CB 3290, Chapel Hill, North Carolina 27599, United States
| | - Alexander M. Lapides
- Department
of Chemistry, University of North Carolina at Chapel Hill, CB 3290, Chapel Hill, North Carolina 27599, United States
| | - Dennis L. Ashford
- Department
of Chemistry, University of North Carolina at Chapel Hill, CB 3290, Chapel Hill, North Carolina 27599, United States
| | - Joseph L. Templeton
- Department
of Chemistry, University of North Carolina at Chapel Hill, CB 3290, Chapel Hill, North Carolina 27599, United States
| | - Thomas J. Meyer
- Department
of Chemistry, University of North Carolina at Chapel Hill, CB 3290, Chapel Hill, North Carolina 27599, United States
| |
Collapse
|
115
|
Hanson K, Losego MD, Kalanyan B, Parsons GN, Meyer TJ. Stabilizing small molecules on metal oxide surfaces using atomic layer deposition. NANO LETTERS 2013; 13:4802-9. [PMID: 23978281 DOI: 10.1021/nl402416s] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Device lifetimes and commercial viability of dye-sensitized solar cells (DSSCs) and dye-sensitized photoelectrosynthesis cells (DSPECs) are dependent on the stability of the surface bound molecular chromophores and catalysts. Maintaining the integrity of the solution-metal oxide interface is especially challenging in DSPECs for water oxidation where it is necessary to perform high numbers of turnovers, under irradiation in an aqueous environment. In this study, we describe the atomic layer deposition (ALD) of TiO2 on nanocrystalline TiO2 prefunctionalized with the dye molecule [Ru(bpy)2(4,4'-(PO3H2)bpy)](2+) (RuP) as a strategy to stabilize surface bound molecules. The resulting films are over an order of magnitude more photostable than untreated films and the desorption rate constant exponentially decreases with increased thickness of ALD TiO2 overlayers. However, the injection yield for TiO2-RuP with ALD TiO2 also decreases with increasing overlayer thickness. The combination of decreased injection yield and 95% quenched emission suggests that the ALD TiO2 overlayer acts as a competitive electron acceptor from RuP*, effectively nonproductively quenching the excited state. The ALD TiO2 also increases back electron transfer rates, relative to the untreated film, but is independent of overlayer thickness. The results for TiO2-RuP with an ALD TiO2 overlayer are compared with similar films having ALD Al2O3 overlayers.
Collapse
Affiliation(s)
- Kenneth Hanson
- Department of Chemistry, University of North Carolina at Chapel Hill , Chapel Hill, North Carolina 27599, United States
| | | | | | | | | |
Collapse
|
116
|
Bedics MA, Mulhern KR, Watson DF, Detty MR. Synthesis and photoelectrochemical performance of chalcogenopyrylium monomethine dyes bearing phosphonate/phosphonic acid substituents. J Org Chem 2013; 78:8885-91. [PMID: 23899118 DOI: 10.1021/jo401280s] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Chalcogenopyrylium monomethine dyes were prepared via condensation of a 4-methylchalcogenopyrylium compound with a chalcogenopyran-4-one bearing a 4-(diethoxyphosphoryl)phenyl substituent (or the phosphonic acid derivative). The dyes have absorbance maxima of 603-697 nm in the window where the solar spectrum is most intense. The dyes formed H-aggregates on TiO2, increasing the light-harvesting efficiency of the dyes. Shortcircuit photocurrent action spectra were acquired to evaluate the influence of dye structure on the photoelectrochemical performance.
Collapse
Affiliation(s)
- Matthew A Bedics
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000, USA
| | | | | | | |
Collapse
|
117
|
Song W, Ito A, Binstead RA, Hanson K, Luo H, Brennaman MK, Concepcion JJ, Meyer TJ. Accumulation of multiple oxidative equivalents at a single site by cross-surface electron transfer on TiO2. J Am Chem Soc 2013; 135:11587-94. [PMID: 23848562 DOI: 10.1021/ja4032538] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The photodriven accumulation of two oxidative equivalents at a single site was investigated on TiO2 coloaded with a ruthenium polypyridyl chromophore [Ru(bpy)2((4,4'-(OH)2PO)2bpy)](2+) (Ru(II)P(2+), bpy = 2,2'-bipyridine, ((OH)2PO)2-bpy = 2,2'-bipyridine-4,4'-diyldiphosphonic acid) and a water oxidation catalyst [Ru(Mebimpy) ((4,4'-(OH)2PO-CH2)2bpy)(OH2)](2+) (Ru(II)OH2(2+), Mebimpy = 2,6-bis(1-methylbenzimidazol-2-yl)pyridine, (4,4'-(OH)2PO-CH2)2bpy) = 4,4'-bis-methlylenephosphonato-2,2'-bipyridine). Electron injection from the metal-to-ligand charge transfer (MLCT) excited state of -Ru(II)P(2+) (-Ru(II)P(2+)*) to give -Ru(III)P(3+) and TiO2(e(-)) was followed by rapid (<20 ns) nearest-neighbor -Ru(II)OH2(2+) to -Ru(III)P(3+) electron transfer. On surfaces containing both -Ru(II)P(2+) and -Ru(III)OH2(3+) (or -Ru(III)OH(2+)), -Ru(II)OH2(2+) was formed by random migration of the injected electron inside the TiO2 nanoparticle and recombination with the preoxidized catalyst, followed by relatively slow (μs-ms) non-nearest neighbor cross-surface electron transfer from -Ru(II)OH2(2+) to -Ru(III)P(3+). Steady state illumination of coloaded TiO2 photoanodes in a dye sensitized photoelectrosynthesis cell (DSPEC) configuration resulted in the buildup of -Ru(III)P(3+), -Ru(III)OH(2+), and -Ru(IV)═O(2+), with -Ru(IV)═O(2+) formation favored at high chromophore to catalyst ratios.
Collapse
Affiliation(s)
- Wenjing Song
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, USA
| | | | | | | | | | | | | | | |
Collapse
|
118
|
Son HJ, Prasittichai C, Mondloch JE, Luo L, Wu J, Kim DW, Farha OK, Hupp JT. Dye Stabilization and Enhanced Photoelectrode Wettability in Water-Based Dye-Sensitized Solar Cells through Post-assembly Atomic Layer Deposition of TiO2. J Am Chem Soc 2013; 135:11529-32. [DOI: 10.1021/ja406538a] [Citation(s) in RCA: 89] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Ho-Jin Son
- Department of Chemistry and
Argonne-Northwestern Solar Energy Research (ANSER) Center, Northwestern University, Evanston, Illinois 60208,
United States
| | - Chaiya Prasittichai
- Department of Chemistry and
Argonne-Northwestern Solar Energy Research (ANSER) Center, Northwestern University, Evanston, Illinois 60208,
United States
| | - Joseph E. Mondloch
- Department of Chemistry and
Argonne-Northwestern Solar Energy Research (ANSER) Center, Northwestern University, Evanston, Illinois 60208,
United States
| | - Langli Luo
- Department
of Materials Science
and Engineering, NUANCE Center, Northwestern University, Evanston, Illinois 60208, United States
| | - Jinsong Wu
- Department
of Materials Science
and Engineering, NUANCE Center, Northwestern University, Evanston, Illinois 60208, United States
| | - Dong Wook Kim
- Department of Chemistry and
Argonne-Northwestern Solar Energy Research (ANSER) Center, Northwestern University, Evanston, Illinois 60208,
United States
| | - Omar K. Farha
- Department of Chemistry and
Argonne-Northwestern Solar Energy Research (ANSER) Center, Northwestern University, Evanston, Illinois 60208,
United States
| | - Joseph T. Hupp
- Department of Chemistry and
Argonne-Northwestern Solar Energy Research (ANSER) Center, Northwestern University, Evanston, Illinois 60208,
United States
- Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois
60439, United States
| |
Collapse
|
119
|
Effects of surface-anchoring mode and aggregation state on electron injection from chalcogenorhodamine dyes to titanium dioxide. J Photochem Photobiol A Chem 2013. [DOI: 10.1016/j.jphotochem.2013.04.028] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
120
|
Brewster TP, Konezny SJ, Sheehan SW, Martini LA, Schmuttenmaer CA, Batista VS, Crabtree RH. Hydroxamate Anchors for Improved Photoconversion in Dye-Sensitized Solar Cells. Inorg Chem 2013; 52:6752-64. [DOI: 10.1021/ic4010856] [Citation(s) in RCA: 93] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Timothy P. Brewster
- Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut
06520-8107, United States
- Energy Sciences Institute, Yale University, P.O. Box 27394, West Haven, Connecticut
06516-7394, United States
| | - Steven J. Konezny
- Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut
06520-8107, United States
- Energy Sciences Institute, Yale University, P.O. Box 27394, West Haven, Connecticut
06516-7394, United States
| | - Stafford W. Sheehan
- Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut
06520-8107, United States
- Energy Sciences Institute, Yale University, P.O. Box 27394, West Haven, Connecticut
06516-7394, United States
| | - Lauren A. Martini
- Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut
06520-8107, United States
- Energy Sciences Institute, Yale University, P.O. Box 27394, West Haven, Connecticut
06516-7394, United States
| | - Charles A. Schmuttenmaer
- Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut
06520-8107, United States
- Energy Sciences Institute, Yale University, P.O. Box 27394, West Haven, Connecticut
06516-7394, United States
| | - Victor S. Batista
- Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut
06520-8107, United States
- Energy Sciences Institute, Yale University, P.O. Box 27394, West Haven, Connecticut
06516-7394, United States
| | - Robert H. Crabtree
- Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut
06520-8107, United States
- Energy Sciences Institute, Yale University, P.O. Box 27394, West Haven, Connecticut
06516-7394, United States
| |
Collapse
|
121
|
Liu Y, Cao Z, Zhang Y, Fang Z. Synthesis of Cerium N-Morpholinomethylphosphonic Acid and Its Flame Retardant Application in High Density Polyethylene. Ind Eng Chem Res 2013. [DOI: 10.1021/ie400259f] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yan Liu
- Lab of Polymer
Materials and Engineering, Ningbo Institute of Technology, Zhejiang University, Ningbo 315100, China
- MOE Key Laboratory of Macromolecular
Synthesis and Functionalization, Institute of Polymer Composites, Zhejiang University, Hangzhou 310027, China
| | - Zhenhu Cao
- Lab of Polymer
Materials and Engineering, Ningbo Institute of Technology, Zhejiang University, Ningbo 315100, China
- MOE Key Laboratory of Macromolecular
Synthesis and Functionalization, Institute of Polymer Composites, Zhejiang University, Hangzhou 310027, China
| | - Yan Zhang
- Lab of Polymer
Materials and Engineering, Ningbo Institute of Technology, Zhejiang University, Ningbo 315100, China
| | - Zhengping Fang
- Lab of Polymer
Materials and Engineering, Ningbo Institute of Technology, Zhejiang University, Ningbo 315100, China
- MOE Key Laboratory of Macromolecular
Synthesis and Functionalization, Institute of Polymer Composites, Zhejiang University, Hangzhou 310027, China
| |
Collapse
|
122
|
Demir AS, Basceken S. Study of asymmetric aldol and Mannich reactions catalyzed by proline–thiourea host–guest complexes in nonpolar solvents. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.tetasy.2013.03.014] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
123
|
Coe BJ, Foxon SP, Helliwell M, Rusanova D, Brunschwig BS, Clays K, Depotter G, Nyk M, Samoc M, Wawrzynczyk D, Garín J, Orduna J. Heptametallic, octupolar nonlinear optical chromophores with six ferrocenyl substituents. Chemistry 2013; 19:6613-29. [PMID: 23536376 DOI: 10.1002/chem.201204453] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2012] [Indexed: 11/08/2022]
Abstract
New complexes with six ferrocenyl (Fc) groups connected to Zn(II) or Cd(II) tris(2,2'-bipyridyl) cores are described. A thorough characterisation of their BPh4(-) salts includes two single-crystal X-ray structures, highly unusual for such species with multiple, extended substituents. Intense, visible d(Fe(II))→π* metal-to-ligand charge-transfer (MLCT) bands accompany the π→π* intraligand charge-transfer absorptions in the near UV region. Each complex shows a single, fully reversible Fe(III/II) wave when probed electrochemically. Molecular quadratic nonlinear optical (NLO) responses are determined by using hyper-Rayleigh scattering and Stark spectroscopy. The latter gives static first hyperpolarisabilities β0 reaching as high as approximately 10(-27) esu and generally increasing with π-conjugation extension. Z-scan cubic NLO measurements reveal high two-photon absorption cross-sections σ2 of up to 5400 GM in one case. DFT calculations reproduce the π-conjugation dependence of β0, and TD-DFT predicts three transitions close in energy contributing to the MLCT bands. The lowest energy transition has octupolar character, whereas the other two are degenerate and dipolar in nature.
Collapse
Affiliation(s)
- Benjamin J Coe
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, UK.
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
124
|
Francois A, Díaz R, Ramírez A, Loeb B, Barrera M, Crivelli I. Evaluation of the potential effectiveness of ruthenium(II) complexes with 2,3-disubtituted pyrazino[2,3-f][1,10]phenanthroline anchors, R2ppl (R=CN, COOH, COOEt, OH) as sensitizers for solar cells. Polyhedron 2013. [DOI: 10.1016/j.poly.2012.12.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
125
|
Xiang W, Gupta A, Kashif MK, Duffy N, Bilic A, Evans RA, Spiccia L, Bach U. Cyanomethylbenzoic acid: an acceptor for donor-π-acceptor chromophores used in dye-sensitized solar cells. CHEMSUSCHEM 2013; 6:256-260. [PMID: 23345047 DOI: 10.1002/cssc.201200636] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2012] [Indexed: 06/01/2023]
Abstract
Sensing the sun: Incorporation of a cyanomethyl benzoic acid electron acceptor into donor-π-acceptor sensitizers for dye-sensitized-solar cell is shown to lead to devices with improved conversion efficiency when compared with more widely used cyanoacetic acid acceptor.
Collapse
Affiliation(s)
- Wanchun Xiang
- School of Chemistry, Monash University, Victoria 3800, Australia
| | | | | | | | | | | | | | | |
Collapse
|
126
|
Buchalska M, Kuncewicz J, Świętek E, Łabuz P, Baran T, Stochel G, Macyk W. Photoinduced hole injection in semiconductor-coordination compound systems. Coord Chem Rev 2013. [DOI: 10.1016/j.ccr.2012.09.017] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
127
|
Brown DG, Schauer PA, Borau-Garcia J, Fancy BR, Berlinguette CP. Stabilization of Ruthenium Sensitizers to TiO2 Surfaces through Cooperative Anchoring Groups. J Am Chem Soc 2013; 135:1692-5. [DOI: 10.1021/ja310965h] [Citation(s) in RCA: 106] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Douglas G. Brown
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta,
Canada T2N 1N4
| | - Phil A. Schauer
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta,
Canada T2N 1N4
| | - Javier Borau-Garcia
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta,
Canada T2N 1N4
| | - Brandon R. Fancy
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta,
Canada T2N 1N4
| | - Curtis P. Berlinguette
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta,
Canada T2N 1N4
| |
Collapse
|
128
|
Hanson K, Wilger DJ, Jones ST, Harrison DP, Bettis SE, Luo H, Papanikolas JM, Waters ML, Meyer TJ. Electron transfer dynamics of peptide-derivatized RuII-polypyridyl complexes on nanocrystalline metal oxide films. Biopolymers 2013; 100:25-37. [DOI: 10.1002/bip.22152] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2012] [Revised: 08/09/2012] [Accepted: 08/27/2012] [Indexed: 12/24/2022]
|
129
|
Charbonnière LJ, Faulkner S, Platas-Iglesias C, Regueiro-Figueroa M, Nonat A, Rodríguez-Blas T, de Blas A, Perry WS, Tropiano M. Ln2M complexes (M = Ru, Re) derived from a bismacrocyclic ligand containing a 4,4′-dimethyl-2,2′-bipyridyl bridging unit. Dalton Trans 2013; 42:3667-81. [DOI: 10.1039/c2dt32660d] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
130
|
Hamd W, Chavarot-Kerlidou M, Fize J, Muller G, Leyris A, Matheron M, Courtin E, Fontecave M, Sanchez C, Artero V, Laberty-Robert C. Dye-Sensitized Nanostructured Crystalline Mesoporous Tin-doped Indium Oxide Films with Tunable Thickness for Photoelectrochemical Applications. JOURNAL OF MATERIALS CHEMISTRY. A 2013; 1. [PMID: 24404381 PMCID: PMC3880857 DOI: 10.1039/c3ta10728k] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
A simple route towards nanostructured mesoporous Indium-Tin Oxide (templated nano-ITO) electrodes exhibiting both high conductivities and optimized bicontinuous pore-solid network is reported. The ITO films are first produced as an X-ray-amorphous, high surface area material, by adapting recently established template-directed sol-gel methods using Sn(IV) and In(III) salts. Carefully controlled temperature/atmosphere treatments convert the as-synthesized ITO films into nano-crystalline coatings with the cubic bixbyite structure. Specially, a multi-layered synthesis was successfully undertaken for tuning the film thickness. In order to evaluate the performances of templated nano-ITO as an electrode substrate for photoelectrochemical applications, photoelectrodes were prepared by covalent grafting of a redox-active dye, the complex [Ru(bpy)2(4,4'-(CH2PO3H2)2-bpy)]Cl21 (bpy=bipyridine). Surface coverage was shown to increase with the film thickness, from 0.7 × 10-9 mol.cm-2 (one layer, 45 nm) to 3.5 × 10-9 mol.cm-2 (ten layers, 470 nm), the latter value being ~ 100 times larger than that for commercially available planar ITO. In the presence of an electron mediator, photocurrents up to 50 μA.cm-2 have been measured under visible light irradiation, demonstrating the potential of this new templated nano-ITO preparation for the construction of efficient photoelectrochemical devices.
Collapse
Affiliation(s)
- W Hamd
- Laboratoire de Chimie de la Matière Condensée de Paris-UMR7574, CNRS, Université Paris 6, Collège de France, 11 place Marcelin Berthelot 75005 Paris
| | - M Chavarot-Kerlidou
- Laboratoire de Chimie et Biologie des Métaux, Université Grenoble 1, CNRS, CEA, 17 rue des Martyrs 38054 Grenoble cedex 9
| | - J Fize
- Laboratoire de Chimie et Biologie des Métaux, Université Grenoble 1, CNRS, CEA, 17 rue des Martyrs 38054 Grenoble cedex 9
| | - G Muller
- Laboratoire de Chimie de la Matière Condensée de Paris-UMR7574, CNRS, Université Paris 6, Collège de France, 11 place Marcelin Berthelot 75005 Paris
| | - A Leyris
- Department of Technology for Biology and Health, CEA LETI-MINATEC, 17 rue des Martyrs, F-38054 Grenoble CEDEX 9, France
| | - M Matheron
- Department of Technology for Biology and Health, CEA LETI-MINATEC, 17 rue des Martyrs, F-38054 Grenoble CEDEX 9, France
| | - E Courtin
- Laboratoire de Chimie de la Matière Condensée de Paris-UMR7574, CNRS, Université Paris 6, Collège de France, 11 place Marcelin Berthelot 75005 Paris
| | - M Fontecave
- Laboratoire de Chimie et Biologie des Métaux, Université Grenoble 1, CNRS, CEA, 17 rue des Martyrs 38054 Grenoble cedex 9 ; Collège de France, 11 Place Marcelin Berthelot, 75005 Paris
| | - C Sanchez
- Laboratoire de Chimie de la Matière Condensée de Paris-UMR7574, CNRS, Université Paris 6, Collège de France, 11 place Marcelin Berthelot 75005 Paris ; Collège de France, 11 Place Marcelin Berthelot, 75005 Paris
| | - V Artero
- Laboratoire de Chimie et Biologie des Métaux, Université Grenoble 1, CNRS, CEA, 17 rue des Martyrs 38054 Grenoble cedex 9
| | - C Laberty-Robert
- Laboratoire de Chimie de la Matière Condensée de Paris-UMR7574, CNRS, Université Paris 6, Collège de France, 11 place Marcelin Berthelot 75005 Paris
| |
Collapse
|
131
|
Guerrero G, Alauzun JG, Granier M, Laurencin D, Mutin PH. Phosphonate coupling molecules for the control of surface/interface properties and the synthesis of nanomaterials. Dalton Trans 2013; 42:12569-85. [DOI: 10.1039/c3dt51193f] [Citation(s) in RCA: 172] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
|
132
|
Swierk JR, Mallouk TE. Design and development of photoanodes for water-splitting dye-sensitized photoelectrochemical cells. Chem Soc Rev 2013; 42:2357-87. [DOI: 10.1039/c2cs35246j] [Citation(s) in RCA: 453] [Impact Index Per Article: 41.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
|
133
|
Zhao Z, Liu H, Chen S. Charge transport at the metal oxide and organic interface. NANOSCALE 2012; 4:7301-7308. [PMID: 23085686 DOI: 10.1039/c2nr32216a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
This review focuses on electron transfer at the interfaces between metal oxides and dye molecules within the context of the chemical nature of the anchoring functional groups, the structure of the dye molecules and the morphology of the metal oxides. In dye-sensitized metal oxides, the efficiency of interfacial charge separation and hence photon-to-current conversion may be sensitively manipulated by the interfacial bonding interactions whereby the dye molecules are adsorbed onto the oxide surface, as well as by the oxide surface morphologies. In these studies, it has been found that upon photoirradiation, the electron injection from the excited dye molecules into the conduction band of metal oxides and electron transport in the metal oxide are two of the most important steps. Therefore, a fundamental understanding of how the interfacial electron transfer dynamics is impacted by these structural parameters is critical for the design and optimization of dye-sensitized photocatalysis and photovoltaics.
Collapse
Affiliation(s)
- Zhenhuan Zhao
- State Key Laboratory of Crystal Materials, Center of Bio & Micro/Nano Functional Materials, Shandong University, 27 S. Shanda Road, Jinan 250100, China
| | | | | |
Collapse
|
134
|
Young KJ, Martini LA, Milot RL, III RCS, Batista VS, Schmuttenmaer CA, Crabtree RH, Brudvig GW. Light-driven water oxidation for solar fuels. Coord Chem Rev 2012; 256:2503-2520. [PMID: 25364029 PMCID: PMC4214930 DOI: 10.1016/j.ccr.2012.03.031] [Citation(s) in RCA: 238] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Light-driven water oxidation is an essential step for conversion of sunlight into storable chemical fuels. Fujishima and Honda reported the first example of photoelectrochemical water oxidation in 1972. In their system, TiO2 was irradiated with ultraviolet light, producing oxygen at the anode and hydrogen at a platinum cathode. Inspired by this system, more recent work has focused on functionalizing nanoporous TiO2 or other semiconductor surfaces with molecular adsorbates, including chromophores and catalysts that absorb visible light and generate electricity (i.e., dye-sensitized solar cells) or trigger water oxidation at low overpotentials (i.e., photocatalytic cells). The physics involved in harnessing multiple photochemical events for multielectron reactions, as required in the four-electron water oxidation process, has been the subject of much experimental and computational study. In spite of significant advances with regard to individual components, the development of highly efficient photocatalytic cells for solar water splitting remains an outstanding challenge. This article reviews recent progress in the field with emphasis on water-oxidation photoanodes inspired by the design of functionalized thin film semiconductors of typical dye-sensitized solar cells.
Collapse
Affiliation(s)
- Karin J. Young
- Department of Chemistry, Yale University, P.O. Box 208107, New Haven, CT 06520-8107, USA
| | - Lauren A. Martini
- Department of Chemistry, Yale University, P.O. Box 208107, New Haven, CT 06520-8107, USA
| | - Rebecca L. Milot
- Department of Chemistry, Yale University, P.O. Box 208107, New Haven, CT 06520-8107, USA
| | | | - Victor S. Batista
- Department of Chemistry, Yale University, P.O. Box 208107, New Haven, CT 06520-8107, USA
| | | | - Robert H. Crabtree
- Department of Chemistry, Yale University, P.O. Box 208107, New Haven, CT 06520-8107, USA
| | - Gary W. Brudvig
- Department of Chemistry, Yale University, P.O. Box 208107, New Haven, CT 06520-8107, USA
| |
Collapse
|
135
|
Charge-separated excited states in platinum(II) chromophores: Photophysics, formation, stabilization and utilization in solar energy conversion. Coord Chem Rev 2012. [DOI: 10.1016/j.ccr.2012.07.010] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
136
|
Glasson CRK, Song W, Ashford DL, Vannucci A, Chen Z, Concepcion JJ, Holland PL, Meyer TJ. Self-Assembled Bilayers on Indium–Tin Oxide (SAB-ITO) Electrodes: A Design for Chromophore–Catalyst Photoanodes. Inorg Chem 2012; 51:8637-9. [DOI: 10.1021/ic300636w] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Christopher R. K. Glasson
- Department of Chemistry, University of North Carolina, Chapel
Hill, North Carolina 27599-3290, United States
| | - Wenjing Song
- Department of Chemistry, University of North Carolina, Chapel
Hill, North Carolina 27599-3290, United States
| | - Dennis L. Ashford
- Department of Chemistry, University of North Carolina, Chapel
Hill, North Carolina 27599-3290, United States
| | - Aaron Vannucci
- Department of Chemistry, University of North Carolina, Chapel
Hill, North Carolina 27599-3290, United States
| | - Zuofeng Chen
- Department of Chemistry, University of North Carolina, Chapel
Hill, North Carolina 27599-3290, United States
| | - Javier J. Concepcion
- Department of Chemistry, University of North Carolina, Chapel
Hill, North Carolina 27599-3290, United States
| | - Patrick L. Holland
- Department of Chemistry, University of Rochester, Rochester,
New York 14618, United States
| | - Thomas J. Meyer
- Department of Chemistry, University of North Carolina, Chapel
Hill, North Carolina 27599-3290, United States
| |
Collapse
|
137
|
Mulhern KR, Orchard A, Watson DF, Detty MR. Influence of surface-attachment functionality on the aggregation, persistence, and electron-transfer reactivity of chalcogenorhodamine dyes on TiO2. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:7071-7082. [PMID: 22475038 DOI: 10.1021/la300668k] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Chalcogenorhodamine dyes bearing phosphonic acids and carboxylic acids were compared as sensitizers of nanocrystalline TiO(2) in dye-sensitized solar cells (DSSCs). The dyes were constructed around a 3,6-bis(dimethylamino)chalcogenoxanthylium core and varied in the 9 substituent: 5-carboxythien-2-yl in dyes 1-E (E = O, Se), 4-carboxyphenyl in dyes 2-E (E = O, S), 5-phosphonothien-2-yl in dyes 3-E (E = O, Se), and 4-phosphonophenyl in dyes 4-E (E = O, Se). All dyes adsorbed to TiO(2) as mixtures of H aggregates and monomers, which exhibited broadened absorption spectra relative to those of purely amorphous monolayers. Surface coverages of dyes and the extent of H aggregation varied minimally with the surface-attachment functionality, the structure of the 9-aryl group, and the identity of the chalcogen heteroatom. Carboxylic acid-functionalized dyes 1-E and 2-E desorbed rapidly and completely from TiO(2) into acidified CH(3)CN, but phosphonic acid-functionalized dyes 3-E and 4-E persisted on TiO(2) for days. Short-circuit photocurrent action spectra of DSSCs corresponded closely to the absorptance spectra of dye-functionalized films; thus, H aggregation did not decrease the electron-injection yield or charge-collection efficiency. Maximum monochromatic incident photon-to-current efficiencies (IPCEs) of DSSCs ranged from 53 to 95% and were slightly higher for carboxylic acid-functionalized dyes 1-E and 2-E. Power-conversion efficiencies of DSSCs under white-light illumination were low (<1%), suggesting that dye regeneration was inefficient at high light intensities. The photoelectrochemical performance (under monochromatic or white-light illumination) of 1-E and 2-E decayed significantly within 20-80 min of the assembly of DSSCs, primarily because of the desorption of the dyes. In contrast, the performance of phosphonic acid-functionalized dyes remained stable or improved slightly on similar timescales. Thus, replacing carboxylic acids with phosphonic acids increased the inertness of chalcogenorhodamine-TiO(2) interfaces without greatly impacting the aggregation of dyes or the interfacial electron-transfer reactivity.
Collapse
Affiliation(s)
- Kacie R Mulhern
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000, United States
| | | | | | | |
Collapse
|
138
|
Queffélec C, Petit M, Janvier P, Knight DA, Bujoli B. Surface modification using phosphonic acids and esters. Chem Rev 2012; 112:3777-807. [PMID: 22530923 DOI: 10.1021/cr2004212] [Citation(s) in RCA: 551] [Impact Index Per Article: 45.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Clémence Queffélec
- LUNAM Université, CNRS, UMR, Chimie Et Interdisciplinarité: Synthèse Analyse Modélisation, UFR Sciences et Techniques, Nantes, France
| | | | | | | | | |
Collapse
|
139
|
Hanson K, Brennaman MK, Luo H, Glasson CRK, Concepcion JJ, Song W, Meyer TJ. Photostability of phosphonate-derivatized, Ru(II) polypyridyl complexes on metal oxide surfaces. ACS APPLIED MATERIALS & INTERFACES 2012; 4:1462-1469. [PMID: 22316053 DOI: 10.1021/am201717x] [Citation(s) in RCA: 100] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The photostability of [Ru(II)(bpy)(2)(4,4'-(PO(3)H(2))(2)bpy)]Cl(2) (bpy = 4,4'-bipyridine) on nanocrystalline TiO(2) and ZrO(2) films was investigated using a standard measurement protocol. Stability was evaluated by monitoring visible light absorbance spectral changes, in real time, during 455 nm photolysis (30 nm fwhm, 475 mW/cm(2)) in a variety of conditions relevant to dye-sensitized solar cells and dye-sensitized photoelectrosynthesis cells. Desorption (k(des)) and photochemical (k(chem)) processes were observed and found to be dependent upon solvent, anion, semiconductor, and presence of oxygen. Both processes are affected by oxygen with k(des) and k(photo) noticeably smaller in argon saturated solution. Desorption was strongly solvent and pH dependent with desorption rates increasing in the order: methanol (MeOH) ≈ acetonitrile (MeCN) < propylene carbonate (PC) < pH 1 ≪ pH 7. Photochemistry occurred in MeOH and PC but not in aqueous, 0.1 M HClO(4) and MeCN. The anion and solvent dependence of k(photo) strongly suggests the photoreaction involves ligand substitution initiated by population of metal centered d-d states. The relative stability of -PO(3)H(2)- versus -COOH-substituted [Ru(II)(bpy)(3)](2+) was also quantitatively established.
Collapse
Affiliation(s)
- Kenneth Hanson
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | | | | | | | | | | | | |
Collapse
|
140
|
Zhu M, Dong Y, Xiao B, Du Y, Yang P, Wang X. Enhanced photocatalytic hydrogen evolution performance based on Ru-trisdicarboxybipyridine-reduced graphene oxide hybrid. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm35322a] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
141
|
Pastore M, De Angelis F. Computational modelling of TiO2 surfaces sensitized by organic dyes with different anchoring groups: adsorption modes, electronic structure and implication for electron injection/recombination. Phys Chem Chem Phys 2011; 14:920-8. [PMID: 22120155 DOI: 10.1039/c1cp22663k] [Citation(s) in RCA: 167] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
We present a Density Functional Theory investigation aimed to model the possible adsorption modes to the TiO(2) surface of two representative TPA-based dyes, termed L0 and rh-L0, having the two mostly employed anchoring groups, namely the cyanoacrylic and rhodanine-3-acetic acids respectively. The bidentate coordination with proton transfer to a nearby surface oxygen is found to be the energetically favored anchoring mode for both dyes. The calculations show that the different dye anchoring groups give rise to a very different electronic coupling between the dye and the manifold of unoccupied semiconductor states, thus implying different electron injection mechanisms. The strongly coupled L0 dye possibly shows an adiabatic electron injection mechanism, while a non-adiabatic electron injection can be foreseen for the weakly coupled rh-L0 dye. The different orientation with respect to the TiO(2) surface for the two classes of dyes, implying different distances of the donor group from the oxide surface, together with the different electron injection mechanisms might account for the faster recombination reaction measured for the rhodanine-based dyes.
Collapse
Affiliation(s)
- Mariachiara Pastore
- Istituto CNR di Scienze e Tecnologie Molecolari, c/o Dipartimento di Chimica, Università di Perugia, Perugia, Italy.
| | | |
Collapse
|
142
|
Coe BJ, Fielden J, Foxon SP, Asselberghs I, Clays K, Van Cleuvenbergen S, Brunschwig BS. Ferrocenyl Diquat Derivatives: Nonlinear Optical Activity, Multiple Redox States, and Unusual Reactivity. Organometallics 2011. [DOI: 10.1021/om200604f] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Benjamin J. Coe
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, U.K
| | - John Fielden
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, U.K
| | - Simon P. Foxon
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, U.K
| | - Inge Asselberghs
- Department of Chemistry, University of Leuven, Celestijnenlaan 200D, B-3001 Leuven, Belgium
| | - Koen Clays
- Department of Chemistry, University of Leuven, Celestijnenlaan 200D, B-3001 Leuven, Belgium
| | | | - Bruce S. Brunschwig
- Molecular Materials Research Center, Beckman Institute, MC 139-74, California Institute of Technology, 1200 East California Boulevard, Pasadena, California 91125, United States
| |
Collapse
|
143
|
Ruthenium(II)- bipyridyl with extended π-system: Improved thermo-stable sensitizer for efficient and long-term durable dye sensitized solar cells. J CHEM SCI 2011. [DOI: 10.1007/s12039-011-0121-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
144
|
Yah WO, Irie A, Jiravanichanun N, Otsuka H, Takahara A. Molecular Aggregation State and Electrical Properties of Terthiophenes/Imogolite Nanohybrids. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2011. [DOI: 10.1246/bcsj.20110080] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
145
|
Reynal A, Palomares E. Ruthenium Polypyridyl Sensitisers in Dye Solar Cells Based on Mesoporous TiO
2. Eur J Inorg Chem 2011. [DOI: 10.1002/ejic.201100516] [Citation(s) in RCA: 121] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Anna Reynal
- Institute of Chemical Research of Catalonia (ICIQ), Avda. Paisos Catalans, 16, 43007 Tarragona, Spain, Fax: +34‐977920823
| | - Emilio Palomares
- Institute of Chemical Research of Catalonia (ICIQ), Avda. Paisos Catalans, 16, 43007 Tarragona, Spain, Fax: +34‐977920823
- Institució Catalana de Recerca i Estudis Avançats (ICREA), Passeig Lluís Companys, 23, 08010 Barcelona, Spain
| |
Collapse
|
146
|
Myahkostupov M, Castellano FN. Synthesis and characterization of tris(heteroleptic) Ru(II) complexes bearing styryl subunits. Inorg Chem 2011; 50:9714-27. [PMID: 21875049 DOI: 10.1021/ic201618e] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We have developed and optimized a well-controlled and refined methodology for the synthesis of substituted π-conjugated 4,4'-styryl-2,2'-bipyridine ligands and also adapted the tris(heteroleptic) synthetic approach developed by Mann and co-workers to produce two new representative Ru(II)-based complexes bearing the metal oxide surface-anchoring precursor 4,4'-bis[E-(p-methylcarboxy-styryl)]-2,2'-bipyridine. The two targeted Ru(II) complexes, (4,4'-dimethyl-2,2'-bipyridine)(4,4'-di-tert-butyl-2,2'-bipyridine)(4,4'-bis[E-(p-methylcarboxy-styryl)]-2,2'-bipyridine) ruthenium(II) hexafluorophosphate, [Ru(dmbpy)(dtbbpy)(p-COOMe-styryl-bpy)](PF(6))(2) (1) and (4,4'-dimethyl-2,2'-bipyridine)(4,4'-dinonyl-2,2'-bipyridine)(4,4'-bis[E-(p-methylcarboxy-styryl)]-2,2'-bipyridine) ruthenium(II) hexafluorophosphate, [Ru(dmbpy)(dnbpy)(p-COOMe-styryl-bpy)](PF(6))(2) (2) were obtained as analytically pure compounds in high overall yields (>50% after 5 steps) and were isolated without significant purification effort. In these tris(heteroleptic) molecules, NMR-based structural characterization became nontrivial as the coordinated ligand sets each sense profoundly distinct magnetic environments greatly complicating traditional 1D spectra. However, rational two-dimensional approaches based on both homo- and heteronuclear couplings were readily applied to these structures producing quite definitive analytical characterization and the associated methodology is described in detail. Preliminary photoluminescence and photochemical characterization of 1 and 2 strongly suggests that both molecules are energetically and kinetically suitable to serve as sensitizers in energy-relevant applications.
Collapse
Affiliation(s)
- Mykhaylo Myahkostupov
- Center for Photochemical Sciences and Department of Chemistry, Bowling Green State University, Bowling Green, Ohio 43403, United States
| | | |
Collapse
|
147
|
Ruthenium polypyridine complexes as sensitizers in NiO based p-type dye-sensitized solar cells: Effects of the anchoring groups. J Photochem Photobiol A Chem 2011. [DOI: 10.1016/j.jphotochem.2011.02.025] [Citation(s) in RCA: 108] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
|
148
|
Gagliardi CJ, Jurss JW, Thorp HH, Meyer TJ. Surface Activation of Electrocatalysis at Oxide Electrodes. Concerted Electron−Proton Transfer. Inorg Chem 2011; 50:2076-8. [DOI: 10.1021/ic102524f] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Christopher J. Gagliardi
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
| | - Jonah W. Jurss
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
| | - H. Holden Thorp
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
| | - Thomas J. Meyer
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
| |
Collapse
|
149
|
Ajayakumar G, Kobayashi M, Masaoka S, Sakai K. Light-induced charge separation and photocatalytic hydrogen evolution from water using RuIIPtII-based molecular devices: Effects of introducing additional donor and/or acceptor sites. Dalton Trans 2011; 40:3955-66. [DOI: 10.1039/c0dt01673j] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
150
|
Giribabu L, Bessho T, Srinivasu M, Vijaykumar C, Soujanya Y, Reddy VG, Reddy PY, Yum JH, Grätzel M, Nazeeruddin MK. A new familiy of heteroleptic ruthenium(ii) polypyridyl complexes for sensitization of nanocrystalline TiO2 films. Dalton Trans 2011; 40:4497-504. [DOI: 10.1039/c0dt01417f] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|