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Ouyang Y, O'Hagan MP, Willner B, Willner I. Aptamer-Modified Homogeneous Catalysts, Heterogenous Nanoparticle Catalysts, and Photocatalysts: Functional "Nucleoapzymes", "Aptananozymes", and "Photoaptazymes". ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2210885. [PMID: 37083210 DOI: 10.1002/adma.202210885] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 01/18/2023] [Indexed: 05/03/2023]
Abstract
Conjugation of aptamers to homogeneous catalysts ("nucleoapzymes"), heterogeneous nanoparticle catalysts ("aptananozymes"), and photocatalysts ("photoaptazymes") yields superior catalytic/photocatalytic hybrid nanostructures emulating functions of native enzymes and photosystems. The concentration of the substrate in proximity to the catalytic sites ("molarity effect") or spatial concentration of electron-acceptor units in spatial proximity to the photosensitizers, by aptamer-ligand complexes, leads to enhanced catalytic/photocatalytic efficacies of the hybrid nanostructures. This is exemplified by sets of "nucleoapzymes" composed of aptamers conjugated to the hemin/G-quadruplex DNAzymes or metal-ligand complexes as catalysts, catalyzing the oxidation of dopamine to aminochrome, oxygen-insertion into the Ar─H moiety of tyrosinamide and the subsequent oxidation of the catechol product into aminochrome, or the hydrolysis of esters or ATP. Also, aptananozymes consisting of aptamers conjugated to Cu2+ - or Ce4+ -ion-modified C-dots or polyadenine-stabilized Au nanoparticles acting as catalysts oxidizing dopamine or operating bioreactor biocatalytic cascades, are demonstrated. In addition, aptamers conjugated to the Ru(II)-tris-bipyridine photosensitizer or the Zn(II) protoporphyrin IX photosensitizer provide supramolecular photoaptazyme assemblies emulating native photosynthetic reaction centers. Effective photoinduced electron transfer followed by the catalyzed synthesis of NADPH or the evolution of H2 is demonstrated by the photosystems. Structure-function relationships dictate the catalytic and photocatalytic efficacies of the systems.
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Affiliation(s)
- Yu Ouyang
- The Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem, 91904, Israel
| | - Michael P O'Hagan
- The Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem, 91904, Israel
| | - Bilha Willner
- The Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem, 91904, Israel
| | - Itamar Willner
- The Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem, 91904, Israel
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2
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Scott A, Sakib S, Saha S, Zhitomirsky I, Soleymani L. A portable and smartphone-operated photoelectrochemical reader for point-of-care biosensing. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.140347] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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3
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Takada T, Shimobaki N, Naruo M, Nakamura M, Yamana K. Photoresponsive porphyrin‐DNA complexes constructed through intercalation‐like binding. CHEMPHOTOCHEM 2022. [DOI: 10.1002/cptc.202200093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Tadao Takada
- University of Hyogo: Hyogo Kenritsu Daigaku Department of applied chemistry 2167 Shosha 671-2280 Himeji, Hyogo JAPAN
| | - Nao Shimobaki
- University of Hyogo: Hyogo Kenritsu Daigaku Department of applied chemistry JAPAN
| | - Moe Naruo
- University of Hyogo: Hyogo Kenritsu Daigaku Department of applied chemistry JAPAN
| | - Mitsunobu Nakamura
- University of Hyogo: Hyogo Kenritsu Daigaku Department of applied chemistry JAPAN
| | - Kazushige Yamana
- University of Hyogo: Hyogo Kenritsu Daigaku Department of applied chemistry JAPAN
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Preparation, Functionalization, Modification, and Applications of Nanostructured Gold: A Critical Review. ENERGIES 2021. [DOI: 10.3390/en14051278] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Gold nanoparticles (Au NPs) play a significant role in science and technology because of their unique size, shape, properties and broad range of potential applications. This review focuses on the various approaches employed for the synthesis, modification and functionalization of nanostructured Au. The potential catalytic applications and their enhancement upon modification of Au nanostructures have also been discussed in detail. The present analysis also offers brief summaries of the major Au nanomaterials synthetic procedures, such as hydrothermal, solvothermal, sol-gel, direct oxidation, chemical vapor deposition, sonochemical deposition, electrochemical deposition, microwave and laser pyrolysis. Among the various strategies used for improving the catalytic performance of nanostructured Au, the modification and functionalization of nanostructured Au produced better results. Therefore, various synthesis, modification and functionalization methods employed for better catalytic outcomes of nanostructured Au have been summarized in this review.
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Dumur F, Dumas E, Mayer CR. Functionalization of Gold Nanoparticles by Inorganic Entities. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E548. [PMID: 32197512 PMCID: PMC7153718 DOI: 10.3390/nano10030548] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 03/12/2020] [Accepted: 03/13/2020] [Indexed: 02/06/2023]
Abstract
The great affinity of gold surface for numerous electron-donating groups has largely contributed to the rapid development of functionalized gold nanoparticles (Au-NPs). In the last years, a new subclass of nanocomposite has emerged, based on the association of inorganic molecular entities (IME) with Au-NPs. This highly extended and diversified subclass was promoted by the synergy between the intrinsic properties of the shell and the gold core. This review-divided into four main parts-focuses on an introductory section of the basic notions related to the stabilization of gold nanoparticles and defines in a second part the key role played by the functionalizing agent. Then, we present a wide range of inorganic molecular entities used to prepare these nanocomposites (NCs). In particular, we focus on four different types of inorganic systems, their topologies, and their current applications. Finally, the most recent applications are described before an overview of this new emerging field of research.
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Affiliation(s)
- Frédéric Dumur
- Aix Marseille Univ, CNRS, ICR, UMR 7273, F-13397 Marseille, France
| | - Eddy Dumas
- Institut Lavoisier de Versailles, UMR CNRS 8180, Université de Versailles Saint-Quentin-en-Yvelines, F-78035 Versailles, France;
| | - Cédric R. Mayer
- Laboratoire LuMin, FRE CNRS 2036, CNRS, Université Paris-Sud, ENS Paris-Saclay, Université Paris-Saclay, F-91405 Orsay CEDEX, France
- Département de Chimie, UFR des Sciences, Université de Versailles Saint-Quentin-en-Yvelines, F-78035 Versailles, France
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6
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Saha S, Chan Y, Soleymani L. Enhancing the Photoelectrochemical Response of DNA Biosensors Using Wrinkled Interfaces. ACS APPLIED MATERIALS & INTERFACES 2018; 10:31178-31185. [PMID: 30192501 DOI: 10.1021/acsami.8b12286] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Photoelectrochemical (PEC) biosensors, with optical biasing and electrochemical readout, are expected to enhance the limit-of-detection of electrochemical biosensors by lowering their background signals. However, when PEC transducers are functionalized with biorecognition layers, their current significantly decreases, which reduces their signal-to-noise ratio and dynamic range. Here, we develop and investigate a wrinkled conductive scaffold for loading photoactive quantum dots into an electrode. The wrinkled photoelectrodes demonstrate an order of magnitude enhancement in the magnitude of the transduced PEC current compared to their planar counterparts. We engineer PEC biosensors by functionalizing the wrinkled photoelectrodes with nucleic acid capture probes. We challenge the sensitivity of the wrinkled and planar biosensors with various concentrations of DNA target and observe a 200 times enhancement in the limit-of-detection for wrinkled versus planar electrodes. In addition to enhanced sensitivity, the wrinkled PEC biosensors are capable of distinguishing between fully complementary and targets with a single base-pair mismatch, demonstrating the suitability of these biosensors for use in clinical diagnostics.
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Panigrahi S, Calmeiro T, Martins R, Nunes D, Fortunato E. Observation of Space Charge Dynamics Inside an All Oxide Based Solar Cell. ACS NANO 2016; 10:6139-6146. [PMID: 27244449 DOI: 10.1021/acsnano.6b02090] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The charge transfer dynamics at interfaces are fundamental to know the mechanism of photovoltaic processes. The internal potential in solar cell devices depends on the basic processes of photovoltaic effect such as charge carrier generation, separation, transport, recombination, etc. Here we report the direct observation of the surface potential depth profile over the cross-section of the ZnO nanorods/Cu2O based solar cell for two different layer thicknesses at different wavelengths of light using Kelvin probe force microscopy. The topography and phase images across the cross-section of the solar cell are also observed, where the interfaces are well-defined on the nanoscale. The potential profiling results demonstrate that under white light illumination, the photoinduced electrons in Cu2O inject into ZnO due to the interfacial electric field, which results in the large difference in surface potential between two active layers. However, under a single wavelength illumination, the charge carrier generation, separation, and transport processes between two active layers are limited, which affect the surface potential images and corresponding potential depth profile. Because of changes in the active layer thicknesses, small variations have been observed in the charge carrier transport mechanism inside the device. These results provide the clear idea about the charge carrier distribution inside the solar cell in different conditions and show the perfect illumination condition for large carrier transport in a high performance solar cell.
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Affiliation(s)
- Shrabani Panigrahi
- Departamento de Ciência dos Materiais, CENIMAT/i3N, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa and CEMOP/Uninova , 2829-516 Caparica, Portugal
| | - Tomás Calmeiro
- Departamento de Ciência dos Materiais, CENIMAT/i3N, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa and CEMOP/Uninova , 2829-516 Caparica, Portugal
| | - Rodrigo Martins
- Departamento de Ciência dos Materiais, CENIMAT/i3N, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa and CEMOP/Uninova , 2829-516 Caparica, Portugal
| | - Daniela Nunes
- Departamento de Ciência dos Materiais, CENIMAT/i3N, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa and CEMOP/Uninova , 2829-516 Caparica, Portugal
| | - Elvira Fortunato
- Departamento de Ciência dos Materiais, CENIMAT/i3N, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa and CEMOP/Uninova , 2829-516 Caparica, Portugal
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Metzger TS, Tel-Vered R, Willner I. Controlled Vectorial Electron Transfer and Photoelectrochemical Applications of Layered Relay/Photosensitizer-Imprinted Au Nanoparticle Architectures on Electrodes. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2016; 12:1605-1614. [PMID: 26808921 DOI: 10.1002/smll.201503077] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2015] [Revised: 12/02/2015] [Indexed: 06/05/2023]
Abstract
Two configurations of molecularly imprinted bis-aniline-bridged Au nanoparticles (NPs) for the specific binding of the electron acceptor N,N'-dimethyl-4,4'-bipyridinium (MV(2+) ) and for the photosensitizer Zn(II)-protoporphyrin IX (Zn(II)-PP-IX) are assembled on electrodes, and the photoelectrochemical features of the two configurations are discussed. Configuration I includes the MV(2+) -imprinted Au NPs matrix as a base layer, on which the Zn(II)-PP-IX-imprinted Au NPs layer is deposited, while configuration II consists of a bilayer corresponding to the reversed imprinting order. Irradiation of the two electrodes in the presence of a benzoquinone/benzohydroquinone redox probe yields photocurrents of unique features: (i) Whereas configuration I yields an anodic photocurrent, the photocurrent generated by configuration II is cathodic. (ii) The photocurrents obtained upon irradiation of the imprinted electrodes are substantially higher as compared to the nonimprinted surfaces. The high photocurrents generated by the imprinted Au NPs-modified electrodes are attributed to the effective loading of the imprinted matrices with the MV(2+) and Zn(II)-PP-IX units and to the effective charge separation proceeding in the systems. The directional anodic/cathodic photocurrents are rationalized in terms of vectorial electron transfer processes dictated by the imprinting order and by the redox potentials of the photosensitizer/electron acceptor units associated with the imprinted sites in the two configurations.
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Affiliation(s)
- Tzuriel S Metzger
- Institute of Chemistry, The Minerva Center for Biohybrid Complex Systems, Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem, 91904, Israel
| | - Ran Tel-Vered
- Institute of Chemistry, The Minerva Center for Biohybrid Complex Systems, Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem, 91904, Israel
| | - Itamar Willner
- Institute of Chemistry, The Minerva Center for Biohybrid Complex Systems, Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem, 91904, Israel
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9
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Shankar S, Orbach M, Kaminker R, Lahav M, van der Boom ME. Gold Nanoparticle Assemblies on Surfaces: Reactivity Tuning through Capping-Layer and Cross-Linker Design. Chemistry 2016; 22:1728-34. [PMID: 26743768 DOI: 10.1002/chem.201503297] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2015] [Indexed: 11/09/2022]
Affiliation(s)
- Sreejith Shankar
- Department of Organic Chemistry; Weizmann Institute of Science; Rehovot 7610001 Israel
| | - Meital Orbach
- Department of Organic Chemistry; Weizmann Institute of Science; Rehovot 7610001 Israel
| | - Revital Kaminker
- Department of Organic Chemistry; Weizmann Institute of Science; Rehovot 7610001 Israel
| | - Michal Lahav
- Department of Organic Chemistry; Weizmann Institute of Science; Rehovot 7610001 Israel
| | - Milko E. van der Boom
- Department of Organic Chemistry; Weizmann Institute of Science; Rehovot 7610001 Israel
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Tel-Vered R, Kahn JS, Willner I. Layered Metal Nanoparticle Structures on Electrodes for Sensing, Switchable Controlled Uptake/Release, and Photo-electrochemical Applications. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2016; 12:51-75. [PMID: 26514112 DOI: 10.1002/smll.201501367] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2015] [Revised: 06/07/2015] [Indexed: 06/05/2023]
Abstract
Layered metal nanoparticle (NP) assemblies provide highly porous and conductive composites of unique electrical and optical (plasmonic) properties. Two methods to construct layered metal NP matrices are described, and these include the layer-by-layer deposition of NPs, or the electropolymerization of monolayer-functionalized NPs, specifically thioaniline-modified metal NPs. The layered NP composites are used as sensing matrices through the use of electrochemistry or surface plasmon resonance (SPR) as transduction signals. The crosslinking of the metal NP composites with molecular receptors, or the imprinting of molecular recognition sites into the electropolymerized NP matrices lead to selective and chiroselective sensing interfaces. Furthermore, the electrosynthesis of redox-active, imprinted, bis-aniline bridged Au NP composites yields electrochemically triggered "sponges" for the switchable uptake and release of electron-acceptor substrates, and results in conductive surfaces of electrochemically controlled wettability. Also, photosensitizer-relay-crosslinked Au NP composites, or electrochemically polymerized layered semiconductor quantum dot/metal NP matrices on electrodes, are demonstrated as functional nanostructures for photoelectrochemical applications.
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Affiliation(s)
- Ran Tel-Vered
- Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem, 91904, Israel
| | - Jason S Kahn
- Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem, 91904, Israel
| | - Itamar Willner
- Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem, 91904, Israel
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11
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Almeida I, Mendo S, Carvalho M, Correia J, Viana A. Catalytic Co and Fe porphyrin/Fe 3 O 4 nanoparticles assembled on gold by carbon disulfide. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2015.11.120] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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12
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Pang X, Pan J, Wang L, Ren W, Gao P, Wei Q, Du B. CdSe quantum dot-functionalized TiO 2 nanohybrids as a visible light induced photoelectrochemical platform for the detection of proprotein convertase subtilisin/kexin type 6. Biosens Bioelectron 2015; 71:88-97. [DOI: 10.1016/j.bios.2015.04.014] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Revised: 04/02/2015] [Accepted: 04/05/2015] [Indexed: 11/26/2022]
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13
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Bâldea I. Electrochemical setup – a unique chance to simultaneously control orbital energies and vibrational properties of single-molecule junctions with unprecedented efficiency. Phys Chem Chem Phys 2014; 16:25942-9. [DOI: 10.1039/c4cp04316b] [Citation(s) in RCA: 12] [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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ZHANG ZX, ZHAO CZ. Progress of Photoelectrochemical Analysis and Sensors. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 2013. [DOI: 10.1016/s1872-2040(13)60637-4] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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15
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Liu R, Luo J, Tao Y, Zhu Y, Chen M, Liu X. Electric-field-induced aggregation of polymeric micelles to construct secondary assembly films. J Appl Polym Sci 2013. [DOI: 10.1002/app.37617] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Ohkubo K, Kawashima Y, Sakai H, Hasobe T, Fukuzumi S. Enhanced photoelectrochemical performance of composite photovoltaic cells of Li+@C60–sulphonated porphyrin supramolecular nanoclusters. Chem Commun (Camb) 2013; 49:4474-6. [DOI: 10.1039/c3cc41187g] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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17
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Yildiz HB, Talaz O, Kamaci M, Caliskan A, Caliskan S. Novel Photoelectrochemical Biosensors for Cholesterol Biosensing by Photonic “Wiring” of Cholesterol Oxidase. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2013. [DOI: 10.1080/10601325.2014.843393] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Zhang L, Lu Y, Du Y, Yang P, Wang X. Synthesis and photocatalytic hydrogen evolution of meso-tetrakis(p-sulfonatophenyl)porphyrin functionalized platinum nanocomposites. J PORPHYR PHTHALOCYA 2012. [DOI: 10.1142/s1088424610002392] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Meso-tetrakis(p-sulfonatophenyl)porphyrin (TPPS4) functionalized platinum nanocomposites were synthesized and characterized using ultraviolet-visible absorption spectroscopy (UV-vis), fluorescence spectroscopy (FL), Fourier transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM), and X-ray diffraction (XRD) methods. The postulated configuration of TPPS4 functionalized platinum nanocomposite may be described as an antenna system containing a photoreceptive TPPS4 shell and a nanosize platinum core. Fluorescence and photoelectrochemistry studies of both TPPS4 and the platinum nanocomposites showed that efficient electron/energy transfer occurred from the TPPS4 donor to the metallic nanocore acceptor. TPPS4 functionalized platinum nanocomposites are photocatalytic active for water reduction to produce hydrogen. The turnover numbers (TONPt and TONTPPS4) and quantum yield of hydrogen (ϕH2) for the photocatalyst (nPt:nTPPS4= 250) were 44, 11056, and 1.8%, respectively, calculated on the basis of the total amount of H2 evolution for 12 h irradiation.
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Affiliation(s)
- Lingling Zhang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Yongtao Lu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Yukou Du
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Ping Yang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Xiaomei Wang
- College of Chemistry and Bioengineering, Suzhou University of Science and Technology, Suzhou 215011, China
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Matsuoka KI, Tahara H, Akiyama T, Yamada S. Effects of capping layers on the photoelectrochemical property of silver nanoparticle-modified indium–tin-oxide electrode. J Photochem Photobiol A Chem 2011. [DOI: 10.1016/j.jphotochem.2011.03.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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20
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Liu X, Yang J, Zhou C, Yin X, Liu H, Li Y, Li Y. Constructing hybrid films of conjugated oligomers and gold nanoparticles for efficient photoelectronic properties. Phys Chem Chem Phys 2011; 13:1984-9. [DOI: 10.1039/c0cp01116a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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21
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Tel-Vered R, Yildiz HB, Yan YM, Willner I. Plugging into enzymes with light: photonic "wiring" of enzymes with electrodes for photobiofuel cells. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2010; 6:1593-1597. [PMID: 20602426 DOI: 10.1002/smll.201000296] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Affiliation(s)
- Ran Tel-Vered
- Institute of Chemistry, Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
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22
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Lu X, Zhi F, Shang H, Wang X, Xue Z. Investigation of the electrochemical behavior of multilayers film assembled porphyrin/gold nanoparticles on gold electrode. Electrochim Acta 2010. [DOI: 10.1016/j.electacta.2009.11.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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23
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Jiang T, Xie T, Zhang Y, Chen L, Peng L, Li H, Wang D. Photoinduced charge transfer in ZnO/Cu2O heterostructure films studied by surface photovoltage technique. Phys Chem Chem Phys 2010; 12:15476-81. [PMID: 20972495 DOI: 10.1039/c0cp01228a] [Citation(s) in RCA: 120] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Tengfei Jiang
- College of Chemistry, Jilin University, Changchun 130012, People's Republic of China
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Nishimori Y, Kanaizuka K, Kurita T, Nagatsu T, Segawa Y, Toshimitsu F, Muratsugu S, Utsuno M, Kume S, Murata M, Nishihara H. Superior electron-transport ability of pi-conjugated redox molecular wires prepared by the stepwise coordination method on a surface. Chem Asian J 2009; 4:1361-7. [PMID: 19544346 DOI: 10.1002/asia.200900072] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Electronic conductivity of molecular wires is a critical fundamental issue in molecular electronics. pi-Conjugated redox molecular wires with the superior long-range electron-transport ability could be constructed on a gold surface through the stepwise ligand-metal coordination method. The beta(d) value, indicating the degree of decrease in the electron-transfer rate constant with distance along the molecular wire between the electrode and the redox active species at the terminal of the wire, were 0.008-0.07 A(-1) and 0.002-0.004 A(-1) for molecular wires of bis(terpyridine)iron and bis(terpyridine)cobalt complex oligomers, respectively. The influences on beta(d) by the chemical structure of molecular wires and the terminal redox units, temperature, electric field, and electrolyte concentration were clarified. The results indicate that facile sequential electron hopping between neighboring metal-complex units within the wire is responsible for the high electron-transport ability.
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Affiliation(s)
- Yoshihiko Nishimori
- Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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Li G, Fudickar W, Skupin M, Klyszcz A, Draeger C, Lauer M, Fuhrhop JH. Rigid lipid membranes and nanometer clefts: motifs for the creation of molecular landscapes. ANGEWANDTE CHEMIE (INTERNATIONAL ED. IN ENGLISH) 2009; 41:1828-52. [PMID: 19750613 DOI: 10.1002/1521-3773(20020603)41:11<1828::aid-anie1828>3.0.co;2-#] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Amphiphilic lipids associate in water spontaneously to form micelles, vesicles, monolayers, or biological membranes. These aggregates are soft and their shape can be changed easily. They behave like complex fluids because they are merely held together by weak, nondirected forces. The most important characteristic of these monolayers is their ability to dissolve hydrophobic molecules in the form of freely movable monomers. The fluid molecular layers are not suitable to anchor the components of chain reactions. However, if the alkyl chains are replaced by rigid skeletons or if the head groups are connected through intermolecular interactions, the aggregates become rigid and their fluid solvent character is lost. The construction of chiral surfaces by synkinesis (synthesis of noncovalent compounds) and of enzyme-type surface clefts of defined size can now be carried out by using rigid lipid membranes. Monolayers and nanometer pores on solid substrates attain sharp edges, and upright nanometer columns on smooth surfaces no longer dissipate. Five examples illustrate the advantages of using rigid molecular assemblies: 1) Cationic domains of rigid edge amphiphiles in fluid membranes act as manipulable ion channels. 2) Spherical micelles, micellar helical fibers, and vesicular tubes can be dried and stored as stable material. Molecular landscapes form on smooth surfaces. 3) alpha,omega-Diamide bolaamphiphiles form rigid nanometer-thick walls on smooth surfaces and these barriers cannot be penetrated by amines. Around steroids and porphyrins, they form rigid nanometer clefts whose walls and water-filled centers can be functionalized. 4) The structure of rigid oligophenylene- and quinone monolayers on electrodes can be changed drastically and reversibly by changing the potential. 5) 10(10) Porphyrin cones on a 1-cm2 gold electrode can be controlled individually by AFM- and STM-tips and investigated by electrochemical, photochemical, and mechanical means. In summary, rigid monolayers and bilayers allow the formation of a great variety of membrane structures that cannot be obtained from classical fluid alkyl amphiphiles.
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Affiliation(s)
- Guangtao Li
- Institut für Chemie/Organische Chemie, Freie Universität Berlin, Takustrasse 3, 14195 Berlin, Germany
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Kishore RSK, Kel O, Banerji N, Emery D, Bollot G, Mareda J, Gomez-Casado A, Jonkheijm P, Huskens J, Maroni P, Borkovec M, Vauthey E, Sakai N, Matile S. Ordered and Oriented Supramolecular n/p-Heterojunction Surface Architectures: Completion of the Primary Color Collection. J Am Chem Soc 2009; 131:11106-16. [DOI: 10.1021/ja9030648] [Citation(s) in RCA: 107] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Ravuri S. K. Kishore
- Departments of Organic, Inorganic and Analytical, and Physical Chemistry, University of Geneva, Geneva, Switzerland, and Molecular Nanofabrication Group, University of Twente, Enschede, The Netherlands
| | - Oksana Kel
- Departments of Organic, Inorganic and Analytical, and Physical Chemistry, University of Geneva, Geneva, Switzerland, and Molecular Nanofabrication Group, University of Twente, Enschede, The Netherlands
| | - Natalie Banerji
- Departments of Organic, Inorganic and Analytical, and Physical Chemistry, University of Geneva, Geneva, Switzerland, and Molecular Nanofabrication Group, University of Twente, Enschede, The Netherlands
| | - Daniel Emery
- Departments of Organic, Inorganic and Analytical, and Physical Chemistry, University of Geneva, Geneva, Switzerland, and Molecular Nanofabrication Group, University of Twente, Enschede, The Netherlands
| | - Guillaume Bollot
- Departments of Organic, Inorganic and Analytical, and Physical Chemistry, University of Geneva, Geneva, Switzerland, and Molecular Nanofabrication Group, University of Twente, Enschede, The Netherlands
| | - Jiri Mareda
- Departments of Organic, Inorganic and Analytical, and Physical Chemistry, University of Geneva, Geneva, Switzerland, and Molecular Nanofabrication Group, University of Twente, Enschede, The Netherlands
| | - Alberto Gomez-Casado
- Departments of Organic, Inorganic and Analytical, and Physical Chemistry, University of Geneva, Geneva, Switzerland, and Molecular Nanofabrication Group, University of Twente, Enschede, The Netherlands
| | - Pascal Jonkheijm
- Departments of Organic, Inorganic and Analytical, and Physical Chemistry, University of Geneva, Geneva, Switzerland, and Molecular Nanofabrication Group, University of Twente, Enschede, The Netherlands
| | - Jurriaan Huskens
- Departments of Organic, Inorganic and Analytical, and Physical Chemistry, University of Geneva, Geneva, Switzerland, and Molecular Nanofabrication Group, University of Twente, Enschede, The Netherlands
| | - Plinio Maroni
- Departments of Organic, Inorganic and Analytical, and Physical Chemistry, University of Geneva, Geneva, Switzerland, and Molecular Nanofabrication Group, University of Twente, Enschede, The Netherlands
| | - Michal Borkovec
- Departments of Organic, Inorganic and Analytical, and Physical Chemistry, University of Geneva, Geneva, Switzerland, and Molecular Nanofabrication Group, University of Twente, Enschede, The Netherlands
| | - Eric Vauthey
- Departments of Organic, Inorganic and Analytical, and Physical Chemistry, University of Geneva, Geneva, Switzerland, and Molecular Nanofabrication Group, University of Twente, Enschede, The Netherlands
| | - Naomi Sakai
- Departments of Organic, Inorganic and Analytical, and Physical Chemistry, University of Geneva, Geneva, Switzerland, and Molecular Nanofabrication Group, University of Twente, Enschede, The Netherlands
| | - Stefan Matile
- Departments of Organic, Inorganic and Analytical, and Physical Chemistry, University of Geneva, Geneva, Switzerland, and Molecular Nanofabrication Group, University of Twente, Enschede, The Netherlands
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Electrochemical assembly of [Ru(bpy)2tatp]2+ associated with surfactants on the MWNTs/GC electrode. J APPL ELECTROCHEM 2009. [DOI: 10.1007/s10800-009-9912-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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29
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Pobelov IV, Li Z, Wandlowski T. Electrolyte Gating in Redox-Active Tunneling Junctions—An Electrochemical STM Approach. J Am Chem Soc 2008; 130:16045-54. [DOI: 10.1021/ja8054194] [Citation(s) in RCA: 140] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ilya V. Pobelov
- Department of Chemistry and Biochemistry, University of Bern, CH-3012 Bern, Switzerland, and Institute of Bio- and Nanosystems IBN 3 and Center of Nanoelectronic Systems for Informational Technology, Research Center Jülich, D-52425 Jülich, Germany
| | - Zhihai Li
- Department of Chemistry and Biochemistry, University of Bern, CH-3012 Bern, Switzerland, and Institute of Bio- and Nanosystems IBN 3 and Center of Nanoelectronic Systems for Informational Technology, Research Center Jülich, D-52425 Jülich, Germany
| | - Thomas Wandlowski
- Department of Chemistry and Biochemistry, University of Bern, CH-3012 Bern, Switzerland, and Institute of Bio- and Nanosystems IBN 3 and Center of Nanoelectronic Systems for Informational Technology, Research Center Jülich, D-52425 Jülich, Germany
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30
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Tel-Vered R, Yehezkeli O, Yildiz H, Wilner O, Willner I. Photoelectrochemistry with Ordered CdS Nanoparticle/Relay or Photosensitizer/Relay Dyads on DNA Scaffolds. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200802590] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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31
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Tel-Vered R, Yehezkeli O, Yildiz H, Wilner O, Willner I. Photoelectrochemistry with Ordered CdS Nanoparticle/Relay or Photosensitizer/Relay Dyads on DNA Scaffolds. Angew Chem Int Ed Engl 2008; 47:8272-6. [DOI: 10.1002/anie.200802590] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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32
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Deng L, Wang Y, Shang L, Wen D, Wang F, Dong S. A sensitive NADH and glucose biosensor tuned by visible light based on thionine bridged carbon nanotubes and gold nanoparticles multilayer. Biosens Bioelectron 2008; 24:957-63. [PMID: 18818067 DOI: 10.1016/j.bios.2008.07.066] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2008] [Revised: 07/07/2008] [Accepted: 07/25/2008] [Indexed: 11/25/2022]
Abstract
A NADH and glucose biosensor based on thionine cross-linked multiwalled carbon nanotubes (MWNTs) and Au nanoparticles (Au NPs) multilayer functionalized indium-doped tin oxide (ITO) electrode were presented in this paper. The effect of light irradiation on the enhancement of bioelectrocatalytic processes of the biocatalytic systems by the photovoltaic effect was investigated. This bioelectrode exhibited excellent catalytic activity of the oxidation towards dihydronicotinamide adenine dinucleotide (NADH). Most interesting, the performance of this NADH sensor could be tuned by the visible light. When the biosensor was performed in the dark, the anodic current increased linearly with NADH concentration over the range from 0.5 to 237 microM with detection limit 0.1 microM and sensitivity 17 nA microM(-1). The sensitivity became 115 nA microM(-1) with detection limit 0.05 microM with the light irradiation. Compared with the reaction in dark, the sensitivity increased around 7 folds while the detection limit decreased 2 folds. The glucose biosensor also exhibited the same behavior. The linear range was from 10 microM to 2.56 mM with the sensitivity of 7.8 microAmM(-1) and detection limit 5.0 microM in the dark. After the light irradiation, the linear range was from 1 microM to 3.25 mM with the sensitivity of 18.5 microA mM(-1) and detection limit 0.7 microM. It indicated a potential to provide an operational access to develop new kinds of photocontrolled dehydrogenase enzyme-based bioelectronics.
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Affiliation(s)
- Liu Deng
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Number 5625, Renmin Road, Jilin 130022, PR China
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Yu J, Mathew S, Flavel BS, Johnston MR, Shapter JG. Ruthenium Porphyrin Functionalized Single-Walled Carbon Nanotube Arrays—A Step Toward Light Harvesting Antenna and Multibit Information Storage. J Am Chem Soc 2008; 130:8788-96. [DOI: 10.1021/ja801142k] [Citation(s) in RCA: 77] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jingxian Yu
- School of Chemistry, Physics and Earth Sciences, Flinders University, Bedford Park, SA 5042, Australia
| | - Simon Mathew
- School of Chemistry, Physics and Earth Sciences, Flinders University, Bedford Park, SA 5042, Australia
| | - Benjamin S. Flavel
- School of Chemistry, Physics and Earth Sciences, Flinders University, Bedford Park, SA 5042, Australia
| | - Martin R. Johnston
- School of Chemistry, Physics and Earth Sciences, Flinders University, Bedford Park, SA 5042, Australia
| | - Joe G. Shapter
- School of Chemistry, Physics and Earth Sciences, Flinders University, Bedford Park, SA 5042, Australia
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DNA-promoted electrochemical assembly of [Ru(bpy)2dpp]3+/2+ on the ITO electrode by introducing copper(II) ion. Electrochim Acta 2008. [DOI: 10.1016/j.electacta.2008.02.061] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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35
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Sakai N, Kishore RSK, Matile S. Three-component zipper assembly of photoactive cascade architectures with blue, red and colorless naphthalenediimide donors and acceptors. Org Biomol Chem 2008; 6:3970-6. [DOI: 10.1039/b808288j] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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36
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From Self-Assembly to Charge Transport with Single Molecules – An Electrochemical Approach. Top Curr Chem (Cham) 2008; 287:181-255. [DOI: 10.1007/128_2008_152] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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37
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Hu X, Dong S. Metal nanomaterials and carbon nanotubes—synthesis, functionalization and potential applications towards electrochemistry. ACTA ACUST UNITED AC 2008. [DOI: 10.1039/b713255g] [Citation(s) in RCA: 152] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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38
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Kotiaho A, Lahtinen RM, Tkachenko NV, Efimov A, Kira A, Imahori H, Lemmetyinen H. Gold nanoparticle enhanced charge transfer in thin film assemblies of porphyrin-fullerene dyads. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2007; 23:13117-13125. [PMID: 18004896 DOI: 10.1021/la702535a] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Photoinduced vectorial electron transfer in a molecularly organized porphyrin-fullerene (PF) dyad film is enhanced by the interlayer charge transfer from the porphyrin moiety of the dyad to an octanethiol protected (dcore approximately 2 nm) gold nanoparticle (AuNP) film. By using the time-resolved Maxwell displacement charge (TRMDC) method, the charge separation distance was found to increase by 5 times in a multilayer film structure where the gold nanoparticles face the porphyrin moiety of the dyad, that is, AuNP|PF, compared to the case of the PF layer alone. Films were assembled by the Langmuir-Blodgett (LB) method using octadecylamine (ODA) as the matrix compound. Atomic force microscopy (AFM) images of the monolayers revealed that AuNPs are arranged into continuous, islandlike structures and PF dyads form clusters. The porphyrin reference layer was assembled with the AuNP layer to gain insight on the interaction mechanism between porphyrin and gold nanoparticles. Interlayer electron transfer was also observed between the AuNPs and porphyrin reference, but the efficiency is lower than that in the AuNP|PF film. Fluorescence emission of the reference porphyrin is slightly quenched, and fluorescence decay becomes faster in the presence of AuNPs. The proposed mechanism for the electron transfer in the AuNP|PF film is thus the primary electron transfer from the porphyrin to the fullerene followed by a secondary hole transfer from the porphyrin to the AuNPs, resulting in an increased charge separation distance and enhanced photovoltage.
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Affiliation(s)
- Anne Kotiaho
- Institute of Materials Chemistry, Tampere University of Technology, P.O. Box 541, 33101 Tampere, Finland.
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39
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Imahori H, Ueda M, Kang S, Hayashi H, Hayashi S, Kaji H, Seki S, Saeki A, Tagawa S, Umeyama T, Matano Y, Yoshida K, Isoda S, Shiro M, Tkachenko N, Lemmetyinen H. Effects of Porphyrin Substituents on Film Structure and Photoelectrochemical Properties of Porphyrin/Fullerene Composite Clusters Electrophoretically Deposited on Nanostructured SnO2 Electrodes. Chemistry 2007; 13:10182-93. [DOI: 10.1002/chem.200700446] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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40
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Sakai N, Sisson AL, Bürgi T, Matile S. Zipper Assembly of Photoactive Rigid-Rod Naphthalenediimide π-Stack Architectures on Gold Nanoparticles and Gold Electrodes. J Am Chem Soc 2007; 129:15758-9. [DOI: 10.1021/ja077099v] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Naomi Sakai
- Department of Organic Chemistry, University of Geneva, Geneva, Switzerland, and University of Neuchâtel, Institute of Microtechnology, Neuchâtel, Switzerland
| | - Adam L. Sisson
- Department of Organic Chemistry, University of Geneva, Geneva, Switzerland, and University of Neuchâtel, Institute of Microtechnology, Neuchâtel, Switzerland
| | - Thomas Bürgi
- Department of Organic Chemistry, University of Geneva, Geneva, Switzerland, and University of Neuchâtel, Institute of Microtechnology, Neuchâtel, Switzerland
| | - Stefan Matile
- Department of Organic Chemistry, University of Geneva, Geneva, Switzerland, and University of Neuchâtel, Institute of Microtechnology, Neuchâtel, Switzerland
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41
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Lee W, Mane R, Lee SH, Han SH. Enhanced photocurrent generations in RuL2(NCS)2/di-(3-aminopropyl)-viologen self-assembled on In2O3 nanorods. Electrochem commun 2007. [DOI: 10.1016/j.elecom.2007.02.012] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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42
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Imahori H. Creation of Fullerene-Based Artificial Photosynthetic Systems. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2007. [DOI: 10.1246/bcsj.80.621] [Citation(s) in RCA: 145] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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43
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Araki N, Amao Y, Funabiki T, Kamitakahara M, Ohtsuki C, Mitsuo K, Asai K, Obata M, Yano S. Optical oxygen-sensing properties of porphyrin derivatives anchored on ordered porous aluminium oxide plates. Photochem Photobiol Sci 2007; 6:794-803. [PMID: 17609774 DOI: 10.1039/b618030b] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An optical oxygen-sensing activity of anchored porphyrin derivatives on ordered porous aluminium oxide plates was studied in relevance to development of new oxygen-sensing systems. Porphyrin derivatives, 5,10,15,20-tetrakis(4-carboxylundecane-1-oxy)porphyrin, 5-[4-(11-carboxylundecane-1-oxy)-10,15,20-triphenyl]porphyrin, 5-(4-carboxylphenyl)-10,15,20-triphenylporphyrin, and their platinum complexes, 5,10,15,20-tetrakis(4-carboxylundecane-1-oxy)porphyrinatoplatinum(II), 5-[4-(11-carboxylundecane-1-oxy)-10,15,20-triphenyl]porphyrinatoplatinum(II), 5-(4-carboxylphenyl)-10,15,20-triphenylporphyrinatoplatinum(II), were synthesized and anchored by an equilibrium adsorption method on aluminium oxide plates, which were prepared by an anodic oxidation. The excitation spectra of the porphyrin-anchored layers showed a broadened and blue-shifted Soret band compared with the corresponding porphyrins in DMSO. The luminescence intensity decreased with increasing oxygen concentrations. The oxygen-sensing ability estimated from I(0)/I(100) (I(0) and I(100) denote the luminescence intensity in 0 and 100% oxygen) was 9.08, 6.78, 8.71, 81.9, 35.5, and 39.1, which are greater than those of corresponding porphyrin derivatives in DMSO under the measured conditions, and indicates the remarkable enhancement effect of platinum(II). Non-linear Stern-Volmer plots were well fitted by the two component system to give the oxygen-sensitive constant (K(SV1)/%(-1)), the oxygen-insensitive constant (K(SV2)/%(-1)), and the former contribution (f(1)): 0.232, 3.32 x 10(-2), and 0.642; 0.141, 2.05 x 10(-2), and 0.687; 0.143, 1.05 x 10(-2), and 0.882; 17.3, 7.04 x 10(-3), and 0.980; 10.2, 1.43 x 10(-2), and 0.935; 16.3, 8.35 x 10(-3), and 0.954. The response time for the change of the atmospheric gas from argon to oxygen was 9.4 s, 12.5 s, 9.6 s, 5.0 s, 8.9 s, and 4.6 s, indicating the shortening effect of platinum. The reverse effect of platinum was observed in the change from oxygen to argon: 15.5 s, 17.0 s, 20.8 s, 667.4 s, 590.1 s, and 580.4 s, indicating the specific interaction of oxygen to the platinum(II) center.
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Affiliation(s)
- Naoko Araki
- Division of Natural Science and Ecological Awareness, Graduate School of Humanities and Sciences, Nara Women's University, Kita-Uoya-Nishi-Machi, Nara, Japan.
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44
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Electrochemistry at capped platinum nanoparticle Langmuir Blodgett films: A study of the influence of platinum amount and of number of LB layers. Electrochim Acta 2007. [DOI: 10.1016/j.electacta.2006.06.046] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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45
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Cho TJ, Shreiner CD, Hwang SH, Moorefield CN, Courneya B, Godínez LA, Manríquez J, Jeong KU, Cheng SZD, Newkome GR. 5,10,15,20-Tetrakis[4′-(terpyridinyl)phenyl]porphyrin and its Ruii complexes: Synthesis, photovoltaic properties, and self-assembled morphology. Chem Commun (Camb) 2007:4456-8. [DOI: 10.1039/b707852h] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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46
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Imahori H. Electrophoretic deposition of donor–acceptor nanostructures on electrodes for molecular photovoltaics. ACTA ACUST UNITED AC 2007. [DOI: 10.1039/b609269c] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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47
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Hasobe T, Fukuzumi S, Kamat PV. Organized Assemblies of Single Wall Carbon Nanotubes and Porphyrin for Photochemical Solar Cells: Charge Injection from Excited Porphyrin into Single-Walled Carbon Nanotubes. J Phys Chem B 2006; 110:25477-84. [PMID: 17165996 DOI: 10.1021/jp064845u] [Citation(s) in RCA: 168] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Photochemical solar cells have been constructed from organized assemblies of single-walled carbon nanotubes (SWCNT) and protonated porphyrin on nanostructured SnO2 electrodes. The protonated form of porphyrin (H4P2+) and SWCNT composites form 0.5-3.0 microm-sized rodlike structures and they can be assembled onto nanostructured SnO2 films [optically transparent electrode OTE/SnO2] by an electrophoretic deposition method. These organized assemblies are photoactive and absorb strongly in the entire visible region. The incident photon to photocurrent efficiency (IPCE) of OTE/SnO2/SWCNT-H4P2+ is approximately 13% at an applied potential of 0.2 V versus saturated calomel electrode. Femtosecond pump-probe spectroscopy experiments confirm the decay of the excited porphyrin in the SWCNT-H4P2+ assembly as it injects electrons into SWCNT. The dual role of SWCNT in promoting photoinduced charge separation and facilitating charge transport is presented.
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Affiliation(s)
- Taku Hasobe
- Radiation Laboratory and Department of Chemistry & Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, USA
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48
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Gorelik LY, Voinova MV. Mechanically mediated electron transfer in model metallo-enzyme interfaces. Biosens Bioelectron 2006; 22:405-8. [PMID: 16899359 DOI: 10.1016/j.bios.2006.06.032] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2005] [Revised: 05/15/2006] [Accepted: 06/02/2006] [Indexed: 12/01/2022]
Abstract
In this paper, we develop a physical analysis of charge transfer in the model 'metallo-enzyme' complex which consists of a synthetic redox-addressed assembly (a 'reaction center') hybridized with a quantum dot (a gold nanoparticle) and attached via molecular bridge (a spacer) to the electrode. This artificial system allows us to model electronic transduction in experimental redox ezyme-gold nanoparticle hybrid structure recently reported by Xiao et al. [Xiao, Y., Patolsky, F., Katz, E., Hainfeid, J.F., Willner, I., 2003. Science 299, 1877-1881]. We consider a photosensitive spacer that allows us to control the conductivity of the bridge by light. In this paper we will focus on a special type of nanoelectro-mechanical processes in this system and investigate single electronic effects in there.
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Affiliation(s)
- L Yu Gorelik
- Department of Applied Physics, Chalmers University of Technology, 412 96 Göteborg, Sweden
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49
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Busby M, Chiorboli C, Scandola F. Relaxation Dynamics and Transient Behavior of Small Arenethiol Passivated Gold Nanoparticles. J Phys Chem B 2006; 110:6020-6. [PMID: 16553412 DOI: 10.1021/jp056995v] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Novel gold nanoparticles, passivated by monolayers of benzenethiol, biphenylthiol, and similar derivatives, have been synthesized and characterized using UV/vis, NMR, and Fourier transform infrared (FTIR) spectroscopies. The nanoparticle sizes have been evaluated using transmission electron microscopy and UV/vis spectroscopy; they show diameters between 2.1 and 4.7 nm, depending on the method of synthesis and the monolayer protecting group. Femtosecond transient absorption measurements show that the nanoparticles possess optical properties on the boundary between molecular and nanoparticle behavior. The smaller systems based on benzenethiol exhibit long-lived excited states with lifetimes on the order of a few nanoseconds, resembling those of small gold molecular type clusters. The larger nanoparticles protected with biphenylthiol and benzylthiol groups relax much more rapidly on a picosecond time scale, similarly to related citrate stabilized systems reported in the literature.
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Affiliation(s)
- Michael Busby
- Dipartimento di Chimica, Università di Ferrara, INSTM, 44100 Ferrara, Italy
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50
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Huang CH, McClenaghan ND, Kuhn A, Bravic G, Bassani DM. Hierarchical self-assembly of all-organic photovoltaic devices. Tetrahedron 2006. [DOI: 10.1016/j.tet.2005.09.150] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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