1
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Cortés-Villena A, Bellezza D, Cunha C, Rosa-Pardo I, Seijas-Da Silva Á, Pina J, Abellán G, Seixas de Melo JS, Galian RE, Pérez-Prieto J. Engineering Metal Halide Perovskite Nanocrystals with BODIPY Dyes for Photosensitization and Photocatalytic Applications. J Am Chem Soc 2024; 146:14479-14492. [PMID: 38572736 PMCID: PMC11140745 DOI: 10.1021/jacs.3c14335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 03/15/2024] [Accepted: 03/21/2024] [Indexed: 04/05/2024]
Abstract
The sensitization of surface-anchored organic dyes on semiconductor nanocrystals through energy transfer mechanisms has received increasing attention owing to their potential applications in photodynamic therapy, photocatalysis, and photon upconversion. Here, we investigate the sensitization mechanisms through visible-light excitation of two nanohybrids based on CsPbBr3 perovskite nanocrystals (NC) functionalized with borondipyrromethene (BODIPY) dyes, specifically 8-(4-carboxyphenyl)-1,3,5,7-tetramethyl-4,4-difluoro-4-bora-3a,4a-diaza-s-indacene (BDP) and 8-(4-carboxyphenyl)-2,6-diiodo-1,3,5,7-tetramethyl-4,4-difluoro-4-bora-3a,4a-diaza-s-indacene (I2-BDP), named as NC@BDP and NC@I2-BDP, respectively. The ability of I2-BDP dyes to extract hot hole carriers from the perovskite nanocrystals is comprehensively investigated by combining steady-state and time-resolved fluorescence as well as femtosecond transient absorption spectroscopy with spectroelectrochemistry and quantum chemical theoretical calculations, which together provide a complete overview of the phenomena that take place in the nanohybrid. Förster resonance energy transfer (FRET) dominates (82%) the photosensitization of the singlet excited state of BDP in the NC@BDP nanohybrid with a rate constant of 3.8 ± 0.2 × 1010 s-1, while charge transfer (64%) mediated by an ultrafast charge transfer rate constant of 1.00 ± 0.08 × 1012 s-1 from hot states and hole transfer from the band edge is found to be mainly responsible for the photosensitization of the triplet excited state of I2-BDP in the NC@I2-BDP nanohybrid. These findings suggest that the NC@I2-BDP nanohybrid is a unique energy transfer photocatalyst for oxidizing α-terpinene to ascaridole through singlet oxygen formation.
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Affiliation(s)
- Alejandro Cortés-Villena
- Institute
of Molecular Science, University of Valencia, c/Catedrático José
Beltrán Martínez 2, 46980 Paterna, Valencia, Spain
| | - Delia Bellezza
- Institute
of Molecular Science, University of Valencia, c/Catedrático José
Beltrán Martínez 2, 46980 Paterna, Valencia, Spain
| | - Carla Cunha
- CQC-IMS,
Department of Chemistry, University of Coimbra, Coimbra P-3004-535, Portugal
| | - Ignacio Rosa-Pardo
- Institute
of Molecular Science, University of Valencia, c/Catedrático José
Beltrán Martínez 2, 46980 Paterna, Valencia, Spain
| | - Álvaro Seijas-Da Silva
- Institute
of Molecular Science, University of Valencia, c/Catedrático José
Beltrán Martínez 2, 46980 Paterna, Valencia, Spain
| | - João Pina
- CQC-IMS,
Department of Chemistry, University of Coimbra, Coimbra P-3004-535, Portugal
| | - Gonzalo Abellán
- Institute
of Molecular Science, University of Valencia, c/Catedrático José
Beltrán Martínez 2, 46980 Paterna, Valencia, Spain
| | | | - Raquel E. Galian
- Institute
of Molecular Science, University of Valencia, c/Catedrático José
Beltrán Martínez 2, 46980 Paterna, Valencia, Spain
| | - Julia Pérez-Prieto
- Institute
of Molecular Science, University of Valencia, c/Catedrático José
Beltrán Martínez 2, 46980 Paterna, Valencia, Spain
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2
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Mathur D, Díaz SA, Hildebrandt N, Pensack RD, Yurke B, Biaggne A, Li L, Melinger JS, Ancona MG, Knowlton WB, Medintz IL. Pursuing excitonic energy transfer with programmable DNA-based optical breadboards. Chem Soc Rev 2023; 52:7848-7948. [PMID: 37872857 PMCID: PMC10642627 DOI: 10.1039/d0cs00936a] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Indexed: 10/25/2023]
Abstract
DNA nanotechnology has now enabled the self-assembly of almost any prescribed 3-dimensional nanoscale structure in large numbers and with high fidelity. These structures are also amenable to site-specific modification with a variety of small molecules ranging from drugs to reporter dyes. Beyond obvious application in biotechnology, such DNA structures are being pursued as programmable nanoscale optical breadboards where multiple different/identical fluorophores can be positioned with sub-nanometer resolution in a manner designed to allow them to engage in multistep excitonic energy-transfer (ET) via Förster resonance energy transfer (FRET) or other related processes. Not only is the ability to create such complex optical structures unique, more importantly, the ability to rapidly redesign and prototype almost all structural and optical analogues in a massively parallel format allows for deep insight into the underlying photophysical processes. Dynamic DNA structures further provide the unparalleled capability to reconfigure a DNA scaffold on the fly in situ and thus switch between ET pathways within a given assembly, actively change its properties, and even repeatedly toggle between two states such as on/off. Here, we review progress in developing these composite materials for potential applications that include artificial light harvesting, smart sensors, nanoactuators, optical barcoding, bioprobes, cryptography, computing, charge conversion, and theranostics to even new forms of optical data storage. Along with an introduction into the DNA scaffolding itself, the diverse fluorophores utilized in these structures, their incorporation chemistry, and the photophysical processes they are designed to exploit, we highlight the evolution of DNA architectures implemented in the pursuit of increased transfer efficiency and the key lessons about ET learned from each iteration. We also focus on recent and growing efforts to exploit DNA as a scaffold for assembling molecular dye aggregates that host delocalized excitons as a test bed for creating excitonic circuits and accessing other quantum-like optical phenomena. We conclude with an outlook on what is still required to transition these materials from a research pursuit to application specific prototypes and beyond.
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Affiliation(s)
- Divita Mathur
- Department of Chemistry, Case Western Reserve University, Cleveland OH 44106, USA
| | - Sebastián A Díaz
- Center for Bio/Molecular Science and Engineering, Code 6900, USA.
| | - Niko Hildebrandt
- Department of Chemistry, Seoul National University, Seoul 08826, South Korea
- Department of Engineering Physics, McMaster University, Hamilton, L8S 4L7, Canada
| | - Ryan D Pensack
- Micron School of Materials Science & Engineering, Boise State University, Boise, ID 83725, USA.
| | - Bernard Yurke
- Micron School of Materials Science & Engineering, Boise State University, Boise, ID 83725, USA.
| | - Austin Biaggne
- Micron School of Materials Science & Engineering, Boise State University, Boise, ID 83725, USA.
| | - Lan Li
- Micron School of Materials Science & Engineering, Boise State University, Boise, ID 83725, USA.
- Center for Advanced Energy Studies, Idaho Falls, ID 83401, USA
| | - Joseph S Melinger
- Electronics Science and Technology Division, Code 6800, U.S. Naval Research Laboratory, Washington, DC 20375, USA
| | - Mario G Ancona
- Electronics Science and Technology Division, Code 6800, U.S. Naval Research Laboratory, Washington, DC 20375, USA
- Department of Electrical and Computer Engineering, Florida State University, Tallahassee, FL 32310, USA
| | - William B Knowlton
- Micron School of Materials Science & Engineering, Boise State University, Boise, ID 83725, USA.
| | - Igor L Medintz
- Center for Bio/Molecular Science and Engineering, Code 6900, USA.
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3
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Sławski J, Szewczyk S, Burdziński G, Gibasiewicz K, Grzyb J. Time-resolved absorption measurements quantify the competition of energy and electron transfer between quantum dots and cytochrome c. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 295:122627. [PMID: 36963219 DOI: 10.1016/j.saa.2023.122627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 03/09/2023] [Accepted: 03/10/2023] [Indexed: 06/18/2023]
Abstract
We applied transient absorption spectroscopy to study the early photodynamics in a system composed of CdTe quantum dots (QDs) and cytochrome c (Cyt c) protein. In the QDs and Cyt c mixtures, about 25 % of the excited QD electrons quickly relax (∼23 ps) to the ground state and roughly 75 % decay on slower time scale - mostly due to quenching by Cyt c. On the basis of the assumed model, we estimated the contribution of electron transfer and other mechanisms to this quenching. The primary quenching mechanism is probably energy transfer but electron transfer makes a significant contribution (∼8 %), resulting in photoreduction of Cyt c. The lifetime of one fraction of reduced Cyt c (35-90 %) is ∼ 1 ms and the lifetime of the remaining fraction was longer than the ∼ 50-ms time window of the experiment. We speculate that, in the former fraction, the back electron transfer from the reduced Cyt c to QDs occurs and the latter fraction of Cyt c is stably reduced.
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Affiliation(s)
- Jakub Sławski
- Department of Biophysics, Faculty of Biotechnology, University of Wrocław, ul. F. Joliot-Curie 14a, 50-383 Wrocław, Poland.
| | - Sebastian Szewczyk
- Faculty of Physics, Adam Mickiewicz University in Poznań, ul. Uniwersytetu Poznańskiego 2, 61-614 Poznań, Poland
| | - Gotard Burdziński
- Faculty of Physics, Adam Mickiewicz University in Poznań, ul. Uniwersytetu Poznańskiego 2, 61-614 Poznań, Poland
| | - Krzysztof Gibasiewicz
- Faculty of Physics, Adam Mickiewicz University in Poznań, ul. Uniwersytetu Poznańskiego 2, 61-614 Poznań, Poland
| | - Joanna Grzyb
- Department of Biophysics, Faculty of Biotechnology, University of Wrocław, ul. F. Joliot-Curie 14a, 50-383 Wrocław, Poland
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4
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DuBose JT, Kamat PV. Energy Versus Electron Transfer: Managing Excited-State Interactions in Perovskite Nanocrystal-Molecular Hybrids. Chem Rev 2022; 122:12475-12494. [PMID: 35793168 DOI: 10.1021/acs.chemrev.2c00172] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Energy and electron transfer processes in light harvesting assemblies dictate the outcome of the overall light energy conversion process. Halide perovskite nanocrystals such as CsPbBr3 with relatively high emission yield and strong light absorption can transfer singlet and triplet energy to surface-bound acceptor molecules. They can also induce photocatalytic reduction and oxidation by selectively transferring electrons and holes across the nanocrystal interface. This perspective discusses key factors dictating these excited-state pathways in perovskite nanocrystals and the fundamental differences between energy and electron transfer processes. Spectroscopic methods to decipher between these complex photoinduced pathways are presented. A basic understanding of the fundamental differences between the two excited deactivation processes (charge and energy transfer) and ways to modulate them should enable design of more efficient light harvesting assemblies with semiconductor and molecular systems.
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Affiliation(s)
- Jeffrey T DuBose
- Radiation Laboratory, University of Notre Dame, Notre Dame, Indiana 46556, United States.,Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Prashant V Kamat
- Radiation Laboratory, University of Notre Dame, Notre Dame, Indiana 46556, United States.,Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States.,Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana 46556, United States
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5
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Wang L, Zhang B, Yang G, Li W, Wang J, Zhang X, Liang G. Spectral analysis on the acceptor concentration-dependent fluorescence resonance energy transfer process in CuInS 2@ZnS-SQ complexes. OPTICS EXPRESS 2022; 30:23695-23703. [PMID: 36225044 DOI: 10.1364/oe.460333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 06/03/2022] [Indexed: 06/16/2023]
Abstract
Owing to the broad spectral response and flexible choices of donors and acceptors, fluorescence resonance energy transfer (FRET) system based on quantum dots (QDs) is a potential candidate for enhancing performance of solar cells and other optoelectronic devices. Thus it is necessary to develop such FRET systems with high efficiency and understand the involved photophysical dynamics. Here, with type I CuInS2@ZnS core-shell quantum dots as the energy donor, series of CuInS2@ZnS-SQ complexes are synthesized by adjusting the acceptor (squaric acid, SQ) concentration. The FRET dynamics of the samples is systematically investigated by virtue of steady-state emission, time-resolved fluorescence decay, and transient absorption measurements. The experimental results display a positive correlation between the energy transfer efficient (η). The best energy transfer efficient achieved from experimental data is 52%. This work provides better understanding of the photophysical dynamics in similar complexes and facilitates further development of new photoelectronic devices based on relevant FRET systems.
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6
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Breger JC, Ellis GA, Walper SA, Susumu K, Medintz IL. Implementing Multi-Enzyme Biocatalytic Systems Using Nanoparticle Scaffolds. Methods Mol Biol 2022; 2487:227-262. [PMID: 35687240 DOI: 10.1007/978-1-0716-2269-8_15] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Interest in multi-enzyme synthesis outside of cells (in vitro) is becoming far more prevalent as the field of cell-free synthetic biology grows exponentially. Such synthesis would allow for complex chemical transformations based on the exquisite specificity of enzymes in a "greener" manner as compared to organic chemical transformations. Here, we describe how nanoparticles, and in this specific case-semiconductor quantum dots, can be used to both stabilize enzymes and further allow them to self-assemble into nanocomplexes that facilitate high-efficiency channeling phenomena. Pertinent protocol information is provided on enzyme expression, choice of nanoparticulate material, confirmation of enzyme attachment to nanoparticles, assay format and tracking, data analysis, and optimization of assay formats to draw the best analytical information from the underlying processes.
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Affiliation(s)
- Joyce C Breger
- Center for Bio/Molecular Science and Engineering, Code 6900, Washington, DC, USA
| | - Gregory A Ellis
- Center for Bio/Molecular Science and Engineering, Code 6900, Washington, DC, USA
| | - Scott A Walper
- Center for Bio/Molecular Science and Engineering, Code 6900, Washington, DC, USA
| | - Kimihiro Susumu
- Optical Sciences Division, Code 5611, U.S. Naval Research Laboratory, Washington, DC, USA
- Jacobs Corporation, Hanover, MD, USA
| | - Igor L Medintz
- Center for Bio/Molecular Science and Engineering, Code 6900, Washington, DC, USA.
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7
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Giovanni D, Righetto M, Zhang Q, Lim JWM, Ramesh S, Sum TC. Origins of the long-range exciton diffusion in perovskite nanocrystal films: photon recycling vs exciton hopping. LIGHT, SCIENCE & APPLICATIONS 2021; 10:2. [PMID: 33386385 PMCID: PMC7775951 DOI: 10.1038/s41377-020-00443-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2020] [Revised: 11/13/2020] [Accepted: 11/23/2020] [Indexed: 05/03/2023]
Abstract
The outstanding optoelectronic performance of lead halide perovskites lies in their exceptional carrier diffusion properties. As the perovskite material dimensionality is reduced to exploit the quantum confinement effects, the disruption to the perovskite lattice, often with insulating organic ligands, raises new questions on the charge diffusion properties. Herein, we report direct imaging of >1 μm exciton diffusion lengths in CH3NH3PbBr3 perovskite nanocrystal (PNC) films. Surprisingly, the resulting exciton mobilities in these PNC films can reach 10 ± 2 cm2 V-1 s-1, which is counterintuitively several times higher than the carrier mobility in 3D perovskite films. We show that this ultralong exciton diffusion originates from both efficient inter-NC exciton hopping (via Förster energy transfer) and the photon recycling process with a smaller yet significant contribution. Importantly, our study not only sheds new light on the highly debated origins of the excellent exciton diffusion in PNC films but also highlights the potential of PNCs for optoelectronic applications.
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Affiliation(s)
- David Giovanni
- Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University (NTU), 21 Nanyang Link, Singapore, 637371, Singapore
| | - Marcello Righetto
- Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University (NTU), 21 Nanyang Link, Singapore, 637371, Singapore
| | - Qiannan Zhang
- Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University (NTU), 21 Nanyang Link, Singapore, 637371, Singapore
| | - Jia Wei Melvin Lim
- Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University (NTU), 21 Nanyang Link, Singapore, 637371, Singapore
- Energy Research Institute @NTU (ERI@N), Interdisciplinary Graduate School, Nanyang Technological University, 50 Nanyang Avenue, S2-B3a-01, Singapore, 639798, Singapore
| | - Sankaran Ramesh
- Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University (NTU), 21 Nanyang Link, Singapore, 637371, Singapore
- Energy Research Institute @NTU (ERI@N), Interdisciplinary Graduate School, Nanyang Technological University, 50 Nanyang Avenue, S2-B3a-01, Singapore, 639798, Singapore
| | - Tze Chien Sum
- Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University (NTU), 21 Nanyang Link, Singapore, 637371, Singapore.
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8
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Roy K, Ghosh D, Sarkar K, Devi P, Kumar P. Chlorophyll( a)/Carbon Quantum Dot Bio-Nanocomposite Activated Nano-Structured Silicon as an Efficient Photocathode for Photoelectrochemical Water Splitting. ACS APPLIED MATERIALS & INTERFACES 2020; 12:37218-37226. [PMID: 32814382 DOI: 10.1021/acsami.0c10279] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Solar-driven water splitting is considered as a futuristic sustainable way to generate hydrogen and chemical storage of solar energy. Further, considering the technological competence, silicon is one of the potential materials for developing large-scale and cost-effective photocathodes (PCs), but it lacks efficacy and stability. Here, we show that chlorophyll(a)/carbon quantum dots (Chl/CQDs) bio-nanocomposite (b-NC)-decorated Si-nanowires (SiNWs) as PC can surpass the reported efficiency for photoelectrochemical (PEC) hydrogen generation along with stability. The optimized heterojunction (Chl/CQDs_SiNW) significantly enhances broad-band solar absorption and protects Si surface from corrosion. Further, the appropriate band alignment enforces efficient photogenerated charge separation and possesses directional exciton transport property via the Förster resonance energy transfer (FRET) mechanism. This synergic effect demonstrates an ∼18 times increase in photocurrent density (26.36 mA/cm2) compared to pristine SiNW PC at 1.07 V vs reversible hydrogen electrode (RHE). The efficiency reaches ∼7.86%, which is comparably the highest reported for hybrid Si-based photocathodes. Hydrogen evaluation rate was measured to be ∼113 μmol/h at 0.8 V vs RHE under 1 sun illumination. With Si-process line compatibility, this new finding opens a new direction toward the development of Si-based efficient and stable PCs at a large scale for commercial applications.
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Affiliation(s)
- Krishnendu Roy
- School of Materials Science, Indian Association for the Cultivation of Science, Kolkata 700032, India
| | - Dibyendu Ghosh
- School of Materials Science, Indian Association for the Cultivation of Science, Kolkata 700032, India
| | - K Sarkar
- School of Materials Science, Indian Association for the Cultivation of Science, Kolkata 700032, India
| | - Pooja Devi
- Central Scientific Instruments Organization, Sector-30C, Chandigarh 160030, India
| | - Praveen Kumar
- School of Materials Science, Indian Association for the Cultivation of Science, Kolkata 700032, India
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9
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de Sousa LE, Silva Filho DA, de Silva P, Ribeiro L, Oliveira Neto PH. A Genetic Algorithm Approach to Design Principles for Organic Photovoltaic Materials. ADVANCED THEORY AND SIMULATIONS 2020. [DOI: 10.1002/adts.202000042] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | - Demétrio Antônio Silva Filho
- Institute of PhysicsUniversity of BrasiliaBrasilia Brasilia 70919‐970 Brazil
- Institute for Advanced StudiesUniversity of Cergy‐Pontoise1 rue Descartes Neuville‐sur‐Oise 95000 France
| | - Piotr de Silva
- Department of Energy Conversion and StorageTechnical University of Denmark Anker Engelunds Vej 301 Kongens Lyngby 2800
| | - Luciano Ribeiro
- Theoretical and Structural Chemistry GroupState University of GoiasAnapolis 75132-400 Brazil
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10
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Pochkaeva EI, Podolsky NE, Zakusilo DN, Petrov AV, Charykov NA, Vlasov TD, Penkova AV, Vasina LV, Murin IV, Sharoyko VV, Semenov KN. Fullerene derivatives with amino acids, peptides and proteins: From synthesis to biomedical application. PROG SOLID STATE CH 2020. [DOI: 10.1016/j.progsolidstchem.2019.100255] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Cui L, Li CC, Tang B, Zhang CY. Advances in the integration of quantum dots with various nanomaterials for biomedical and environmental applications. Analyst 2018; 143:2469-2478. [PMID: 29736519 DOI: 10.1039/c8an00222c] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Quantum dots (QDs) are semiconductor nanocrystals with distinct characteristics of high brightness, large Stokes shift and broad absorption spectra, large molar extinction coefficients, high quantum yield, good photostability and long fluorescence lifetime. The QDs have replaced the conventional fluorophores with wide applications in immunoassays, microarrays, fluorescence imaging, targeted drug delivery and therapy. The integration of QDs with various nanomaterials such as noble metal nanoparticles, carbon allotropes, upconversion nanoparticles (UCNPs), metal oxides and metal-organic frameworks (MOFs) brings new opportunities and possibilities in nanoscience and nanotechnology. In this review, we summarize the recent advances in the integration of QDs with various nanomaterials for biomedical and environmental applications including sensing, bioimaging, theranostics and cancer therapy. We highlight the involved interactions such as fluorescence resonance energy transfer (FRET), plasmon enhanced fluorescence (PEF), and nanometal surface energy transfer (NSET) as well as the synergistic effect resulting from the integration of QDs with nanomaterials. In addition, we discuss the sensing and imaging mechanisms of different strategies and give new insight into the challenges and future direction as well.
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Affiliation(s)
- Lin Cui
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan 250014, China.
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12
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Righetto M, Privitera A, Carraro F, Bolzonello L, Ferrante C, Franco L, Bozio R. Engineering interactions in QDs-PCBM blends: a surface chemistry approach. NANOSCALE 2018; 10:11913-11922. [PMID: 29901055 DOI: 10.1039/c8nr03520b] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Here we present a comprehensive study on the photophysics of QDs-fullerene blends, aiming to elucidate the impact of ligands on the extraction of carriers from QDs. We investigated how three different ligands (oleylamine, octadecanethiol and propanethiol) influence the dynamics of charge generation, separation, and recombination in blends of CdSe/CdS core/shell QDs and PCBM. We accessed each relevant process directly by combining the results from both optical and magnetic spectroscopies. Transient absorption measurements revealed a faster interaction dynamics in thiol-capped ligands. Through phenomenological modeling of the interaction processes, i.e., energy transfer and electron transfer, we estimated the suppression of exciton migration and the enhancement of electron transfer processes when alkyl-thiols are employed as ligands. Contextually, we report the profound impact of the ligands' alkyl chain length, leading to strengthened interactions with PCBM acceptors. Quantitatively, we measured a 10-fold increase in the electron transfer rate when oleylamine ligands were exchanged with propanethiol ligands. EPR spectroscopy gave access to subtle details regarding both the enhanced charge generation and lower binding energy of charge-transfer states in blends compared to PCBM alone. Moreover, through pulsed EPR techniques, we inferred the localization of deep electron traps in localized sites close to QDs in the blends. Therefore, our thorough characterization evidenced the essential role of ligands in determining QD interactions. We believe that these discoveries will contribute to the efficient incorporation of QDs in existing organic PV technologies.
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Affiliation(s)
- Marcello Righetto
- Department of Chemical Science and U.R. INSTM, University of Padova, Via Marzolo 1, I-35131, Padova, Italy.
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13
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Jung S, Chen X. Quantum Dot-Dye Conjugates for Biosensing, Imaging, and Therapy. Adv Healthc Mater 2018; 7:e1800252. [PMID: 29862653 PMCID: PMC6149543 DOI: 10.1002/adhm.201800252] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2018] [Revised: 04/17/2018] [Indexed: 01/14/2023]
Abstract
Adding value to the intrinsic properties of quantum dots (QDs), a strategy to conjugate dyes on the surface of QDs offers new opportunities, since the coupling between QD and dyes can be designed to allow Förster resonance energy transfer (FRET) and/or electron transfer (eT). These processes are accompanied by the change of QD and/or dye fluorescence and subsequent photochemical reactions (e.g., generation of 1 O2 ). Based on the change of fluorescence signals by the interaction with biomolecules, QD-dye conjugates are exploited as biosensors for the detection of pH, O2 , nicotinamide adenine dinucleotide (phosphate), ions, proteases, glutathione, and microRNA. QD-dye conjugates also can be modulated by the irradiation of external light; this concept is demonstrated for fluorescence super-resolution imaging as photoactivatable or photoswitchable probes. When QDs are conjugated with photosensitizing dyes, the QD-dye conjugates can generate 1 O2 in a repetitive manner for better cancer treatment, and can also be available for approaches using two-photon excitation or bioluminescence resonance energy transfer mechanisms for deep tissue imaging. Here, the recent advances in QD-dye conjugates, where FRET or eT produces fluorescence readouts or photochemical reactions, are reviewed. Various QD-dye conjugate systems and their biosensing/imaging and photodynamic therapeutics are summarized.
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Affiliation(s)
- Sungwook Jung
- Laboratory of Molecular Imaging and Nanomedicine, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Xiaoyuan Chen
- Laboratory of Molecular Imaging and Nanomedicine, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, MD, 20892, USA
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14
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Moroz P, Jin Z, Sugiyama Y, Lara D, Razgoniaeva N, Yang M, Kholmicheva N, Khon D, Mattoussi H, Zamkov M. Competition of Charge and Energy Transfer Processes in Donor-Acceptor Fluorescence Pairs: Calibrating the Spectroscopic Ruler. ACS NANO 2018; 12:5657-5665. [PMID: 29883087 DOI: 10.1021/acsnano.8b01451] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Sensing strategies utilizing Förster resonance energy transfer (FRET) are widely used for probing biological phenomena. FRET sensitivity to the donor-acceptor distance makes it ideal for measuring the concentration of a known analyte or determining the spatial separation between fluorescent labels in a macromolecular assembly. The difficulty lies in extracting the FRET efficiency from the acceptor-induced quenching of the donor emission, which may contain a significant non-FRET contribution. Here, we demonstrate a general spectroscopic approach for differentiating between charge transfer and energy transfer (ET) processes in donor-acceptor assemblies and apply the developed method for unravelling the FRET/non-FRET contributions in cyanine dye-semiconductor quantum dot (QD) constructs. The present method relies on correlating the amplitude of the acceptor emission to specific changes in the donor excitation profile in order to extract ET-only transfer efficiencies. Quenching of the donor emission is then utilized to determine the non-ET component, tentatively attributed to the charge transfer. We observe that the latter accounts for 50-99% of donor emission quenching in QD-Cy5 and QD-Cy7 systems, stressing the importance of determining the non-FRET efficiency in a spectroscopic ruler and other FRET-based sensing applications.
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Affiliation(s)
| | - Zhicheng Jin
- Department of Chemistry and Biochemistry , Florida State University , Tallahassee , Florida 32303 , United States
| | - Yuya Sugiyama
- Department of Chemistry and Biochemistry , Florida State University , Tallahassee , Florida 32303 , United States
| | - D'Andree Lara
- Department of Chemistry and Biochemistry , St. Mary's University , San Antonio , Texas 78228 , United States
| | | | | | | | - Dmitriy Khon
- Department of Chemistry and Biochemistry , St. Mary's University , San Antonio , Texas 78228 , United States
| | - Hedi Mattoussi
- Department of Chemistry and Biochemistry , Florida State University , Tallahassee , Florida 32303 , United States
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15
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Liu Y, Kannegulla A, Wu B, Cheng LJ. Quantum Dot Fullerene-Based Molecular Beacon Nanosensors for Rapid, Highly Sensitive Nucleic Acid Detection. ACS APPLIED MATERIALS & INTERFACES 2018; 10:18524-18531. [PMID: 29763288 DOI: 10.1021/acsami.8b03552] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Spherical fullerene (C60) can quench the fluorescence of a quantum dot (QD) through energy-transfer and charge-transfer processes, with the quenching efficiency regulated by the number of proximate C60 on each QD. With the quenching property and its small size compared with other nanoparticle-based quenchers, it is advantageous to group a QD reporter and multiple C60-labeled oligonucleotide probes to construct a molecular beacon (MB) probe for sensitive, robust nucleic acid detection. We demonstrated a rapid, high-sensitivity DNA detection method using the nanosensors composed of QD-C60-based MBs carried by magnetic nanoparticles. The assay was accelerated by first dispersing the nanosensors in analytes for highly efficient DNA capture resulting from short-distance three-dimensional diffusion of targets to the sensor surface and then concentrating the nanosensors to a substrate by magnetic force to amplify the fluorescence signal for target quantification. The enhanced mass transport enabled a rapid detection (<10 min) with a small sample volume (1-10 μL). The high signal-to-noise ratio produced by the QD-C60 pairs and magnetic concentration yielded a detection limit of 100 fM (∼106 target DNA copies for a 10 μL analyte). The rapid, sensitive, label-free detection method will benefit the applications in point-of-care molecular diagnostic technologies.
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Affiliation(s)
- Ye Liu
- Electrical Engineering and Computer Science , Oregon State University , Corvallis , Oregon 97331 , United States
| | - Akash Kannegulla
- Electrical Engineering and Computer Science , Oregon State University , Corvallis , Oregon 97331 , United States
| | - Bo Wu
- Electrical Engineering and Computer Science , Oregon State University , Corvallis , Oregon 97331 , United States
| | - Li-Jing Cheng
- Electrical Engineering and Computer Science , Oregon State University , Corvallis , Oregon 97331 , United States
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16
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Lv Y, Chen S, Shen Y, Ji J, Zhou Q, Liu S, Zhang Y. Competitive Multiple-Mechanism-Driven Electrochemiluminescent Detection of 8-Hydroxy-2′-deoxyguanosine. J Am Chem Soc 2018; 140:2801-2804. [DOI: 10.1021/jacs.8b00515] [Citation(s) in RCA: 138] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Yanqin Lv
- Jiangsu Engineering Laboratory
of Smart Carbon-Rich Materials and Device, Jiangsu Province Hi-Tech
Key Laboratory for Bio-Medical Research, School of Chemistry and Chemical
Engineering, Medical School, Southeast University, Nanjing 211189, China
| | - Shiyu Chen
- Jiangsu Engineering Laboratory
of Smart Carbon-Rich Materials and Device, Jiangsu Province Hi-Tech
Key Laboratory for Bio-Medical Research, School of Chemistry and Chemical
Engineering, Medical School, Southeast University, Nanjing 211189, China
| | - Yanfei Shen
- Jiangsu Engineering Laboratory
of Smart Carbon-Rich Materials and Device, Jiangsu Province Hi-Tech
Key Laboratory for Bio-Medical Research, School of Chemistry and Chemical
Engineering, Medical School, Southeast University, Nanjing 211189, China
| | - Jingjing Ji
- Jiangsu Engineering Laboratory
of Smart Carbon-Rich Materials and Device, Jiangsu Province Hi-Tech
Key Laboratory for Bio-Medical Research, School of Chemistry and Chemical
Engineering, Medical School, Southeast University, Nanjing 211189, China
| | - Qing Zhou
- Jiangsu Engineering Laboratory
of Smart Carbon-Rich Materials and Device, Jiangsu Province Hi-Tech
Key Laboratory for Bio-Medical Research, School of Chemistry and Chemical
Engineering, Medical School, Southeast University, Nanjing 211189, China
| | - Songqin Liu
- Jiangsu Engineering Laboratory
of Smart Carbon-Rich Materials and Device, Jiangsu Province Hi-Tech
Key Laboratory for Bio-Medical Research, School of Chemistry and Chemical
Engineering, Medical School, Southeast University, Nanjing 211189, China
| | - Yuanjian Zhang
- Jiangsu Engineering Laboratory
of Smart Carbon-Rich Materials and Device, Jiangsu Province Hi-Tech
Key Laboratory for Bio-Medical Research, School of Chemistry and Chemical
Engineering, Medical School, Southeast University, Nanjing 211189, China
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17
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Tkachenko NV. Photoinduced Charge Separation in Semiconductor-Quantum-Dot/Organic-Molecule Hybrids. CHEMPHOTOCHEM 2017. [DOI: 10.1002/cptc.201700161] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Nikolai V. Tkachenko
- Laboratory of Chemistry and Bioengineering; Tampere University of Technology; P.O.Box 541 33101 Tampere Finland
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18
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Chern M, Nguyen TT, Mahler AH, Dennis AM. Shell thickness effects on quantum dot brightness and energy transfer. NANOSCALE 2017; 9:16446-16458. [PMID: 29063928 DOI: 10.1039/c7nr04296e] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Heterostructured core/shell quantum dots (QDs) are prized in biomedical imaging and biosensing applications because of their bright, photostable emission and effectiveness as Förster resonance energy transfer (FRET) donors. However, as nanomaterials chemistry has progressed beyond traditional QDs to incorporate new compositions, ultra-thick shells, and alloyed structures, few of these materials have had their optical properties systematically characterized for effective application. For example, thick-shelled QDs, also known as 'giant' QDs (gQDs) are useful in single-particle tracking microscopy because of their reduced blinking, but we know only that CdSe/CdS gQDs are qualitatively brighter than thin-shelled CdSe/CdS in aqueous media. In this study, we quantify the impact of shell thickness on the nanoparticle molar extinction coefficient, quantum yield, brightness, and effectiveness as a FRET donor for CdSe/xCdS core/shell and CdSe/xCdS/ZnS core/shell/shell QDs, with variable thicknesses of the CdS shell (x). Molar extinction coefficients up to three orders of magnitude higher than conventional dyes and forty-fold greater than traditional QDs are reported. When thick CdS shells are combined with ZnS capping, quantum yields following thiol ligand exchange reach nearly 40%-5-10× higher than either the commercially available QDs or gQDs without ZnS caps treated the same way. These results clearly show that thick CdS shells and ZnS capping shells work in concert to provide the brightest possible CdSe-based QDs for bioimaging applications. We demonstrate that thicker shelled gQDs are over 50-fold brighter than their thin-shelled counterparts because of significant increases in their absorption cross-sections and higher quantum yield in aqueous milieu. Consistent with the point-dipole approximation commonly used for QD-FRET, these data show that thick shells contribute to the donor-acceptor distance, reducing FRET efficiency. Despite the reduction in FRET efficiency, even the thickest-shell gQDs exhibited energy transfer. Through this systematic study, we elucidate the tradeoffs between signal output, which is much higher for the gQDs, and FRET efficiency, which decreases with shell thickness. This study serves as a guide to nanobiotechnologists striving to use gQDs in imaging and sensing devices.
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Affiliation(s)
- Margaret Chern
- Division of Materials Science and Engineering, Boston University, Boston, Massachusetts 02446, USA
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19
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Rajbanshi B, Kar M, Sarkar P, Sarkar P. Phosphorene quantum dot-fullerene nanocomposites for solar energy conversion: An unexplored inorganic-organic nanohybrid with novel photovoltaic properties. Chem Phys Lett 2017. [DOI: 10.1016/j.cplett.2017.07.033] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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20
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Yang J, Li Q, Bian L. Spectroscopic analysis and docking simulation on the recognition and binding of TEM-1 β-lactamase with β-lactam antibiotics. Exp Ther Med 2017; 14:3288-3298. [PMID: 28912880 DOI: 10.3892/etm.2017.4853] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2016] [Accepted: 03/17/2017] [Indexed: 11/05/2022] Open
Abstract
The interaction between TEM-1 β-lactamase and antibiotics is very important in the hydrolysis of antibiotics. In the present study, the recognition and binding of TEM-1 β-lactamase with three β-lactam antibiotics, including penicillin G, cefalexin and cefoxitin, was investigated by fluorescence and ultraviolet-visible absorption spectra in combination with molecular docking in the temperature range of 278-288 K and under simulated physiological conditions. The results demonstrated that the fluorescence emissions of TEM-1 β-lactamase were extinguished by static quenching and the energy of TEM-1 β-lactamase was transferred in a non-radioactive manner. The binding of TEM-1 β-lactamase with the three antibiotics was a spontaneously exothermic process, with binding constants of 1.41×107, 7.81×106 and 5.43×104 at 278 K. Furthermore, binding was driven by enthalpy change and the binding forces between them were mainly hydrogen bonding and Van der Waals forces. A TEM-1 β-lactamase only bound with one antibiotic at a time and the binding capacity between them was closely associated with the functional groups and flexibility in the antibiotics. In addition, a conformational change occurred in the TEM-1 β-lactamases when they bound with the three antibiotics and TEM-1 β-lactamase-antibiotic complexes were formed. The present study provided an insight into the recognition and binding of TEM-1 β-lactamase with β-lactam antibiotics, which may be helpful for designing a novel substrate for TEM-1 β-lactamase and developing novel antibiotics that are resistant to the enzyme.
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Affiliation(s)
- Jianting Yang
- Department of Traditional Chinese Medicine, College of Life Science, Northwest University, Xi'an, Shaanxi 710069, P.R. China.,Drug and Equipment Department, Weapon Industry 521 Hospital, Xi'an, Shaanxi 710065, P.R. China
| | - Qian Li
- Department of Traditional Chinese Medicine, College of Life Science, Northwest University, Xi'an, Shaanxi 710069, P.R. China
| | - Liujiao Bian
- Department of Traditional Chinese Medicine, College of Life Science, Northwest University, Xi'an, Shaanxi 710069, P.R. China
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21
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Chashchikhin OV, Budyka MF. Spectral and photochemical properties of hybrid organic-inorganic nanosystems based on CdS quantum dots and merocyanine ligands. Photochem Photobiol Sci 2017; 16:1252-1259. [PMID: 28617494 DOI: 10.1039/c7pp00137a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The spectral and photochemical properties of hybrid organic-inorganic nanosystems (HNSs) were investigated. HNS consisted of CdS quantum dots (QDs) functionalized with ligands containing the isothiouronium anchor group linked by a polymethylene chain with photochromic merocyanine (MC). The HNS synthesis was carried out via a microwave-assisted one-pot technique. Energy transfer from the QDs to MC in the HNS was observed and resulted in QD fluorescence quenching and MC sensitization. Compared to the free MC, trans-cis photoisomerization of MC in the HNS was suppressed and its photodestruction was accelerated. In addition, upon HNS photolysis by visible light with energy higher than the threshold, the photosensitized destruction of the QDs (which did not absorb the applied light) occurred. The observed effects were proposed to be caused by MC adsorption on QDs surface, which leads to the restriction of the MC photoisomerization and population of the surface electron trap states of the QDs.
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Affiliation(s)
- Oleg V Chashchikhin
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, pr. Akademika Semenova 1, Chernogolovka, Moscow region 142432, Russian Federation.
| | - Mikhail F Budyka
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, pr. Akademika Semenova 1, Chernogolovka, Moscow region 142432, Russian Federation.
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22
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Nag OK, Stewart MH, Deschamps JR, Susumu K, Oh E, Tsytsarev V, Tang Q, Efros AL, Vaxenburg R, Black BJ, Chen Y, O’Shaughnessy TJ, North SH, Field LD, Dawson PE, Pancrazio JJ, Medintz IL, Chen Y, Erzurumlu RS, Huston AL, Delehanty JB. Quantum Dot-Peptide-Fullerene Bioconjugates for Visualization of in Vitro and in Vivo Cellular Membrane Potential. ACS NANO 2017; 11:5598-5613. [PMID: 28514167 PMCID: PMC6001310 DOI: 10.1021/acsnano.7b00954] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
We report the development of a quantum dot (QD)-peptide-fullerene (C60) electron transfer (ET)-based nanobioconjugate for the visualization of membrane potential in living cells. The bioconjugate is composed of (1) a central QD electron donor, (2) a membrane-inserting peptidyl linker, and (3) a C60 electron acceptor. The photoexcited QD donor engages in ET with the C60 acceptor, resulting in quenching of QD photoluminescence (PL) that tracks positively with the number of C60 moieties arrayed around the QD. The nature of the QD-capping ligand also modulates the quenching efficiency; a neutral ligand coating facilitates greater QD quenching than a negatively charged carboxylated ligand. Steady-state photophysical characterization confirms an ET-driven process between the donor-acceptor pair. When introduced to cells, the amphiphilic QD-peptide-C60 bioconjugate labels the plasma membrane by insertion of the peptide-C60 portion into the hydrophobic bilayer, while the hydrophilic QD sits on the exofacial side of the membrane. Depolarization of cellular membrane potential augments the ET process, which is manifested as further quenching of QD PL. We demonstrate in HeLa cells, PC12 cells, and primary cortical neurons significant QD PL quenching (ΔF/F0 of 2-20% depending on the QD-C60 separation distance) in response to membrane depolarization with KCl. Further, we show the ability to use the QD-peptide-C60 probe in combination with conventional voltage-sensitive dyes (VSDs) for simultaneous two-channel imaging of membrane potential. In in vivo imaging of cortical electrical stimulation, the optical response of the optimal QD-peptide-C60 configuration exhibits temporal responsivity to electrical stimulation similar to that of VSDs. Notably, however, the QD-peptide-C60 construct displays 20- to 40-fold greater ΔF/F0 than VSDs. The tractable nature of the QD-peptide-C60 system offers the advantages of ease of assembly, large ΔF/F0, enhanced photostability, and high throughput without the need for complicated organic synthesis or genetic engineering, respectively, that is required of traditional VSDs and fluorescent protein constructs.
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Affiliation(s)
- Okhil K. Nag
- Center for Bio/Molecular Science and Engineering, Code 6900
| | | | | | - Kimihiro Susumu
- Optical Sciences Division, Code 5600
- Sotera Defense Solutions, Columbia, Maryland 21046, United States
| | - Eunkeu Oh
- Optical Sciences Division, Code 5600
- Sotera Defense Solutions, Columbia, Maryland 21046, United States
| | - Vassiliy Tsytsarev
- Fischell Department of Bioengineering, University of Maryland, College Park, Maryland 20742, United States
- Department of Anatomy and Neurobiology, University of Maryland School of Medicine, Baltimore, Maryland 21201, United States
| | - Qinggong Tang
- Fischell Department of Bioengineering, University of Maryland, College Park, Maryland 20742, United States
| | - Alexander L. Efros
- Materials and Science and Technology Division, Code 6300, U.S. Naval Research Laboratory, Washington, D.C. 20375, United States
| | - Roman Vaxenburg
- Computational Materials Science Center, George Mason University, Fairfax, Virginia 22030, United States
| | - Bryan J. Black
- Department of Bioengineering, University of Texas at Dallas, Richardson, Texas 75080, United States
| | - YungChia Chen
- Center for Bio/Molecular Science and Engineering, Code 6900
| | - Thomas J. O’Shaughnessy
- Materials and Science and Technology Division, Code 6300, U.S. Naval Research Laboratory, Washington, D.C. 20375, United States
| | | | - Lauren D. Field
- Center for Bio/Molecular Science and Engineering, Code 6900
- Fischell Department of Bioengineering, University of Maryland, College Park, Maryland 20742, United States
| | - Philip E. Dawson
- Department of Chemistry, The Scripps Research Institute, La Jolla, California 92037, United States
| | - Joseph J. Pancrazio
- Department of Bioengineering, University of Texas at Dallas, Richardson, Texas 75080, United States
| | | | - Yu Chen
- Fischell Department of Bioengineering, University of Maryland, College Park, Maryland 20742, United States
| | - Reha S. Erzurumlu
- Department of Anatomy and Neurobiology, University of Maryland School of Medicine, Baltimore, Maryland 21201, United States
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23
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Zhang C, Wang S, Tan B. Novel fullerene-based porous materials constructed by a solvent knitting strategy. Chem Commun (Camb) 2017; 53:12758-12761. [DOI: 10.1039/c7cc06702j] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Here we choose a dihydronaphthyl-functionalized C60 fullerene as a building block and utilize a novel solvent knitting strategy based on Friedel–Crafts alkylation reaction to construct two kinds of novel porous materials by using dichloromethane (DCM) and 1,2-dichloroethane (DCE) as solvents and external crosslinkers.
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Affiliation(s)
- Chengxin Zhang
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Wuhan
- China
- Key Laboratory of Material Chemistry for Energy Conversion and Storage
| | - Shaolei Wang
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Wuhan
- China
- Key Laboratory of Material Chemistry for Energy Conversion and Storage
| | - Bien Tan
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Wuhan
- China
- Key Laboratory of Material Chemistry for Energy Conversion and Storage
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24
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Arvani M, Virkki K, Abou-Chahine F, Efimov A, Schramm A, Tkachenko NV, Lupo D. Photoinduced hole transfer in QD-phthalocyanine hybrids. Phys Chem Chem Phys 2016; 18:27414-27421. [PMID: 27722635 DOI: 10.1039/c6cp04374g] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A series of CdSe quantum dot (QD)-phthalocyanine (Pc) hybrids were synthesized and their photophysics was studied using steady state and time-resolved spectroscopic methods. Emission of QDs was progressively quenched upon increasing the concentration of Pc in the hybrids. A detailed transient absorption study of the hybrids revealed that the mechanism of quenching is charge separation, resulting in the formation of hybrids with negatively charged QDs and the Pc cation. Direct photo-excitation of Pc did not show any detectable interaction between the excited state of Pc and the QD to which it is attached. An explanation is proposed, based on the suggestion that the energy of the lowest unoccupied molecular orbital (LUMO) of Pc is lower than the lower edge of the QD conduction band, while the energy of the highest occupied molecular orbital (HOMO) of Pc is sufficiently higher than the high energy edge of the QD valence band (VB), thus permitting hole transfer from the QD VB to the Pc HOMO after photo-excitation of QDs.
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Affiliation(s)
- M Arvani
- Department of Electronics and Communications Engineering, Tampere University of Technology, 33720 Tampere, Finland.
| | - K Virkki
- Department of Chemistry and Bioengineering, Tampere University of Technology, 33720 Tampere, Finland.
| | - F Abou-Chahine
- Department of Chemistry and Bioengineering, Tampere University of Technology, 33720 Tampere, Finland.
| | - A Efimov
- Department of Chemistry and Bioengineering, Tampere University of Technology, 33720 Tampere, Finland.
| | - A Schramm
- Department of Electronics and Communications Engineering, Tampere University of Technology, 33720 Tampere, Finland.
| | - N V Tkachenko
- Department of Chemistry and Bioengineering, Tampere University of Technology, 33720 Tampere, Finland.
| | - D Lupo
- Department of Electronics and Communications Engineering, Tampere University of Technology, 33720 Tampere, Finland.
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25
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Hildebrandt N, Spillmann CM, Algar WR, Pons T, Stewart MH, Oh E, Susumu K, Díaz SA, Delehanty JB, Medintz IL. Energy Transfer with Semiconductor Quantum Dot Bioconjugates: A Versatile Platform for Biosensing, Energy Harvesting, and Other Developing Applications. Chem Rev 2016; 117:536-711. [DOI: 10.1021/acs.chemrev.6b00030] [Citation(s) in RCA: 457] [Impact Index Per Article: 57.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Niko Hildebrandt
- NanoBioPhotonics
Institut d’Electronique Fondamentale (I2BC), Université Paris-Saclay, Université Paris-Sud, CNRS, 91400 Orsay, France
| | | | - W. Russ Algar
- Department
of Chemistry, University of British Columbia, Vancouver, BC V6T 1Z1, Canada
| | - Thomas Pons
- LPEM;
ESPCI Paris, PSL Research University; CNRS; Sorbonne Universités, UPMC, F-75005 Paris, France
| | | | - Eunkeu Oh
- Sotera Defense Solutions, Inc., Columbia, Maryland 21046, United States
| | - Kimihiro Susumu
- Sotera Defense Solutions, Inc., Columbia, Maryland 21046, United States
| | - Sebastian A. Díaz
- American Society for Engineering Education, Washington, DC 20036, United States
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26
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Palomo V, Díaz SA, Stewart MH, Susumu K, Medintz IL, Dawson PE. 3,4-Dihydroxyphenylalanine Peptides as Nonperturbative Quantum Dot Sensors of Aminopeptidase. ACS NANO 2016; 10:6090-9. [PMID: 27206058 PMCID: PMC4968404 DOI: 10.1021/acsnano.6b01682] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Fluorescence-based assays for hydrolases that cleave within the substrate (endopeptidases) are common, while developing substrates for proteases that selectively cleave from peptide termini (exopeptidases) is more challenging, since the termini are specifically recognized by the enzyme and cannot be modified to facilitate a Förster resonance energy transfer (FRET)-based approach. The development of a robust system that enables the quenching of fluorescent particles by simple amino acid side chains would find broad utility for peptide sensors and would be advantageous for exopeptidases. Here we describe a quantum dot (QD)-based electron transfer (ET) sensor that is able to allow direct, quantitative monitoring of both exopeptidase and endopeptidase activity. The incorporation of 3,4-dihydroxyphenylalanine (DOPA) into the sequence of a peptide allows for the quenching of QD photoluminescence through an ET mechanism. DOPA is a nonproteinogenic amino acid that can replace a phenylalanine or tyrosine residue in a peptide sequence without severely altering structural properties, allowing for its introduction at multiple positions within a biologically active peptide substrate. Consequently, the quenching system presented here is ideally suited for incorporation into diverse peptide substrates for enzyme recognition, digestion, and activity sensing. Our findings suggest a broad utility of a small ET-capable amino acid side chain in detecting enzyme activity through ET-mediated QD luminescence quenching.
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Affiliation(s)
- Valle Palomo
- Department of Chemistry, The Scripps Research Institute, La Jolla, California, 92037 (USA)
| | - Sebastián A. Díaz
- Center for Bio/Molecular Science and Engineering, Code 6900, U.S. Naval Research Laboratory, Washington, D.C., 20375 (USA)
| | - Michael H. Stewart
- Optical Sciences Division, Code 5611, U.S. Naval Research Laboratory, Washington, D.C., 20375 (USA)
| | - Kimihiro Susumu
- Optical Sciences Division, Code 5611, U.S. Naval Research Laboratory, Washington, D.C., 20375 (USA)
| | - Igor L. Medintz
- Center for Bio/Molecular Science and Engineering, Code 6900, U.S. Naval Research Laboratory, Washington, D.C., 20375 (USA)
| | - Philip E. Dawson
- Department of Chemistry, The Scripps Research Institute, La Jolla, California, 92037 (USA)
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27
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Rowland CE, Brown CW, Medintz IL, Delehanty JB. Intracellular FRET-based probes: a review. Methods Appl Fluoresc 2015; 3:042006. [PMID: 29148511 DOI: 10.1088/2050-6120/3/4/042006] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Probes that exploit Förster resonance energy transfer (FRET) in their feedback mechanism are touted for their sensitivity, robustness, and low background, and thanks to the exceptional distance dependence of the energy transfer process, they provide a means of probing lengthscales well below the resolution of light. These attributes make FRET-based probes superbly suited to an intracellular environment, and recent developments in biofunctionalization and expansion of imaging capabilities have put them at the forefront of intracellular studies. Here, we present an overview of the engineering and execution of a variety of recent intracellular FRET probes, highlighting the diversity of this class of materials and the breadth of application they have found in the intracellular environment.
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Affiliation(s)
- Clare E Rowland
- Center for Bio/Molecular Science and Engineering, Code 6900, US Naval Research Laboratory, Washington, DC 20375, USA. National Research Council, Washington, DC 20036, USA
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28
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Zor E, Morales-Narváez E, Zamora-Gálvez A, Bingol H, Ersoz M, Merkoçi A. Graphene Quantum Dots-based Photoluminescent Sensor: A Multifunctional Composite for Pesticide Detection. ACS APPLIED MATERIALS & INTERFACES 2015; 7:20272-20279. [PMID: 26313947 DOI: 10.1021/acsami.5b05838] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Due to their size and difficulty to obtain, cost/effective biological or synthetic receptors (e.g., antibodies or aptamers, respectively), organic toxic compounds (e.g., less than 1 kDa) are generally challenging to detect using simple platforms such as biosensors. This study reports on the synthesis and characterization of a novel multifunctional composite material, magnetic silica beads/graphene quantum dots/molecularly imprinted polypyrrole (mSGP). mSGP is engineered to specifically and effectively capture and signal small molecules due to the synergy among chemical, magnetic, and optical properties combined with molecular imprinting of tributyltin (291 Da), a hazardous compound, selected as a model analyte. Magnetic and selective properties of the mSGP composite can be exploited to capture and preconcentrate the analyte onto its surface, and its photoluminescent graphene quantum dots, which are quenched upon analyte recognition, are used to interrogate the presence of the contaminant. This multifunctional material enables a rapid, simple and sensitive platform for small molecule detection, even in complex mediums such as seawater, without any sample treatment.
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Affiliation(s)
- Erhan Zor
- ICN2-Catalan Institute of Nanoscience and Nanotechnology, Campus de la UAB , 08193 (Bellaterra) Barcelona, Spain
- Science and Technology Department, A.K. Faculty of Education, Necmettin Erbakan University , Konya, 42090, Turkey
- Department of Chemistry, Institute of Science, Selcuk University , Konya, 42030, Turkey
- Department of Chemistry, A.K. Education Faculty, Necmettin Erbakan University , Konya, 42090, Turkey
| | - Eden Morales-Narváez
- ICN2-Catalan Institute of Nanoscience and Nanotechnology, Campus de la UAB , 08193 (Bellaterra) Barcelona, Spain
| | - Alejandro Zamora-Gálvez
- ICN2-Catalan Institute of Nanoscience and Nanotechnology, Campus de la UAB , 08193 (Bellaterra) Barcelona, Spain
| | - Haluk Bingol
- Department of Chemistry, A.K. Education Faculty, Necmettin Erbakan University , Konya, 42090, Turkey
| | - Mustafa Ersoz
- Advanced Technology Research and Application Center, Selcuk University , Konya, 42030, Turkey
| | - Arben Merkoçi
- ICN2-Catalan Institute of Nanoscience and Nanotechnology, Campus de la UAB , 08193 (Bellaterra) Barcelona, Spain
- ICREA-Catalan Institution for Research and Advanced Studies , Barcelona, 08010, Spain
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29
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Ding S, Cargill AA, Das SR, Medintz IL, Claussen JC. Biosensing with Förster Resonance Energy Transfer Coupling between Fluorophores and Nanocarbon Allotropes. SENSORS 2015; 15:14766-87. [PMID: 26110411 PMCID: PMC4507682 DOI: 10.3390/s150614766] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/19/2015] [Revised: 06/01/2015] [Accepted: 06/05/2015] [Indexed: 01/10/2023]
Abstract
Nanocarbon allotropes (NCAs), including zero-dimensional carbon dots (CDs), one-dimensional carbon nanotubes (CNTs) and two-dimensional graphene, exhibit exceptional material properties, such as unique electrical/thermal conductivity, biocompatibility and high quenching efficiency, that make them well suited for both electrical/electrochemical and optical sensors/biosensors alike. In particular, these material properties have been exploited to significantly enhance the transduction of biorecognition events in fluorescence-based biosensing involving Förster resonant energy transfer (FRET). This review analyzes current advances in sensors and biosensors that utilize graphene, CNTs or CDs as the platform in optical sensors and biosensors. Widely utilized synthesis/fabrication techniques, intrinsic material properties and current research examples of such nanocarbon, FRET-based sensors/biosensors are illustrated. The future outlook and challenges for the research field are also detailed.
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Affiliation(s)
- Shaowei Ding
- Department of Mechanical Engineering, Iowa State University, 2104 Black Engineering, Ames, IA 50011, USA.
| | - Allison A Cargill
- Department of Mechanical Engineering, Iowa State University, 2104 Black Engineering, Ames, IA 50011, USA.
| | - Suprem R Das
- Department of Mechanical Engineering, Iowa State University, 2104 Black Engineering, Ames, IA 50011, USA.
| | - Igor L Medintz
- Center for Bio/Molecular Science & Engineering Code 6900, US Naval Research Laboratory, Washington, DC 20375, USA.
| | - Jonathan C Claussen
- Department of Mechanical Engineering, Iowa State University, 2104 Black Engineering, Ames, IA 50011, USA.
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30
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Samanta A, Walper SA, Susumu K, Dwyer CL, Medintz IL. An enzymatically-sensitized sequential and concentric energy transfer relay self-assembled around semiconductor quantum dots. NANOSCALE 2015; 7:7603-7614. [PMID: 25804284 DOI: 10.1039/c5nr00828j] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The ability to control light energy within de novo nanoscale structures and devices will greatly benefit their continuing development and ultimate application. Ideally, this control should extend from generating the light itself to its spatial propagation within the device along with providing defined emission wavelength(s), all in a stand-alone modality. Here we design and characterize macromolecular nanoassemblies consisting of semiconductor quantum dots (QDs), several differentially dye-labeled peptides and the enzyme luciferase which cumulatively demonstrate many of these capabilities by engaging in multiple-sequential energy transfer steps. To create these structures, recombinantly-expressed luciferase and the dye-labeled peptides were appended with a terminal polyhistidine sequence allowing for controlled ratiometric self-assembly around the QDs via metal-affinity coordination. The QDs serve to provide multiple roles in these structures including as central assembly platforms or nanoscaffolds along with acting as a potent energy harvesting and transfer relay. The devices are activated by addition of coelenterazine H substrate which is oxidized by luciferase producing light energy which sensitizes the central 625 nm emitting QD acceptor by bioluminescence resonance energy transfer (BRET). The sensitized QD, in turn, acts as a relay and transfers the energy to a first peptide-labeled Alexa Fluor 647 acceptor dye displayed on its surface. This dye then transfers energy to a second red-shifted peptide-labeled dye acceptor on the QD surface through a second concentric Förster resonance energy transfer (FRET) process. Alexa Fluor 700 and Cy5.5 are both tested in the role of this terminal FRET acceptor. Photophysical analysis of spectral profiles from the resulting sequential BRET-FRET-FRET processes allow us to estimate the efficiency of each of the transfer steps. Importantly, the efficiency of each step within this energy transfer cascade can be controlled to some extent by the number of enzymes/peptides displayed on the QD. Further optimization of the energy transfer process(es) along with potential applications of such devices are finally discussed.
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Affiliation(s)
- Anirban Samanta
- Center for Bio/Molecular Science and Engineering, Code 6900, U. S. Naval Research Laboratory, Washington, DC 20375 USA.
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31
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Lian Z, Xu P, Wang W, Zhang D, Xiao S, Li X, Li G. C60-decorated CdS/TiO2 mesoporous architectures with enhanced photostability and photocatalytic activity for H2 evolution. ACS APPLIED MATERIALS & INTERFACES 2015; 7:4533-40. [PMID: 25658952 DOI: 10.1021/am5088665] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Fullerene (C60) enhanced mesoporous CdS/TiO2 architectures were fabricated by an evaporation induced self-assembly route together with an ion-exchanged method. C60 clusters were incorporated into the pore wall of mesoporous CdS/TiO2 with the formation of C60 enhanced CdS/TiO2 hybrid architectures, for achieving the enhanced photostability and photocatalytic activity in H2 evolution under visible-light irradiation. Such greatly enhanced photocatalytic performance and photostability could be due to the strong combination and heterojunctions between C60 and CdS/TiO2. The as-formed C60 cluster protection layers in the CdS/TiO2 framework not only improve the light absorption capability, but also greatly accelerated the photogenerated electron transfer to C60 clusters for H2 evolution.
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Affiliation(s)
- Zichao Lian
- Key Laboratory of Resource Chemistry of Ministry of Education, Shanghai Key Laboratory of Rare Earth Functional Materials, College of Life and Environmental Science, Shanghai Normal University , Shanghai, 200234, People's Republic of China
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32
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Zou HY, Gao PF, Gao MX, Huang CZ. Polydopamine-embedded Cu2−xSe nanoparticles as a sensitive biosensing platform through the coupling of nanometal surface energy transfer and photo-induced electron transfer. Analyst 2015; 140:4121-9. [DOI: 10.1039/c5an00221d] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
This study innovatively highlights the mechanistic details of NSET and PET (NSET©PET) coupling processes, and the disclosed mechanism provides new opportunities for sensitive biosensing applications.
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Affiliation(s)
- Hong Yan Zou
- Key Laboratory of Luminescence and Real-Time Analytical Chemistry (Southwest University)
- Ministry of Education
- College of Pharmaceutical Sciences
- Southwest University
- Chongqing
| | - Peng Fei Gao
- Key Laboratory of Luminescence and Real-Time Analytical Chemistry (Southwest University)
- Ministry of Education
- College of Pharmaceutical Sciences
- Southwest University
- Chongqing
| | - Ming Xuan Gao
- College of Chemistry and Chemical Engineering
- Southwest University
- Chongqing
- P. R. China
| | - Cheng Zhi Huang
- Key Laboratory of Luminescence and Real-Time Analytical Chemistry (Southwest University)
- Ministry of Education
- College of Pharmaceutical Sciences
- Southwest University
- Chongqing
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33
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Si HY, Wang LJ, Feng WJ, Zhang HL, Zhu H, Zhao JJ, Ding ZL, Li YT. Facilely controlling the Förster energy transfer efficiency of dendron encapsulated conjugated organic molecular wire–CdSe quantum dot nanostructures. NEW J CHEM 2015. [DOI: 10.1039/c4nj01888e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
On Den-OPE–CdSe nanostructures, as the size of the dendrimer increases, the energy transfer efficiency from Den-OPEs to CdSe QDs enhances.
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Affiliation(s)
- Hua-Yan Si
- School of Materials Science and Engineering
- Shijiazhuang Tiedao University
- Shijiazhuang 050043
- China
- Hebei Provincial Key Laboratory of Traffic Engineering materials
| | - Le-Jia Wang
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- 730000 Lanzhou
- China
| | - Wen-Jie Feng
- Mechanics Engineering Department
- Shijiazhuang Tiedao University
- Shijiazhuang 050043
- China
| | - Hao-Li Zhang
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- 730000 Lanzhou
- China
| | - Hao Zhu
- School of Materials Science and Engineering
- Shijiazhuang Tiedao University
- Shijiazhuang 050043
- China
| | - Jin-Jin Zhao
- School of Materials Science and Engineering
- Shijiazhuang Tiedao University
- Shijiazhuang 050043
- China
| | - Zhan-Lai Ding
- School of Materials Science and Engineering
- Shijiazhuang Tiedao University
- Shijiazhuang 050043
- China
| | - Yan-Ting Li
- School of Materials Science and Engineering
- Shijiazhuang Tiedao University
- Shijiazhuang 050043
- China
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34
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Breger JC, Walper SA, Oh E, Susumu K, Stewart MH, Deschamps JR, Medintz IL. Quantum dot display enhances activity of a phosphotriesterase trimer. Chem Commun (Camb) 2015; 51:6403-6. [DOI: 10.1039/c5cc00418g] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Phosphotrisomerase trimer assembled on a quantum dot. This construct displays enhanced catalytic over freely diffusing enzyme and has potential to be spun into a fiber.
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Affiliation(s)
- Joyce C. Breger
- Center for Bio/Molecular Science and Engineering
- Code 6900
- U. S. Naval Research Laboratory
- Washington
- USA
| | - Scott A. Walper
- Center for Bio/Molecular Science and Engineering
- Code 6900
- U. S. Naval Research Laboratory
- Washington
- USA
| | - Eunkeu Oh
- Optical Sciences Division
- Code 5600. U.S. Naval Research Laboratory
- Washington
- USA
- Sotera Defense Solutions
| | - Kimihiro Susumu
- Optical Sciences Division
- Code 5600. U.S. Naval Research Laboratory
- Washington
- USA
- Sotera Defense Solutions
| | - Michael H. Stewart
- Optical Sciences Division
- Code 5600. U.S. Naval Research Laboratory
- Washington
- USA
| | - Jeffrey R. Deschamps
- Center for Bio/Molecular Science and Engineering
- Code 6900
- U. S. Naval Research Laboratory
- Washington
- USA
| | - Igor L. Medintz
- Center for Bio/Molecular Science and Engineering
- Code 6900
- U. S. Naval Research Laboratory
- Washington
- USA
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35
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Kölle P, Pugliesi I, Langhals H, Wilcken R, Esterbauer AJ, de Vivie-Riedle R, Riedle E. Hole-transfer induced energy transfer in perylene diimide dyads with a donor–spacer–acceptor motif. Phys Chem Chem Phys 2015; 17:25061-72. [DOI: 10.1039/c5cp02981c] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Pump–probe spectroscopy, time resolved fluorescence, chemical variation and quantum chemical calculations reveal an efficient energy transfer mechanism enabled by a bright charge transfer state located on the spacer.
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Affiliation(s)
- Patrick Kölle
- Department of Chemistry
- Ludwig-Maximilians-Universität München
- 81377 München
- Germany
| | - Igor Pugliesi
- Lehrstuhl für BioMolekulare Optik
- Ludwig-Maximilians-Universität München
- 80538 München
- Germany
| | - Heinz Langhals
- Department of Chemistry
- Ludwig-Maximilians-Universität München
- 81377 München
- Germany
| | - Roland Wilcken
- Lehrstuhl für BioMolekulare Optik
- Ludwig-Maximilians-Universität München
- 80538 München
- Germany
| | | | | | - Eberhard Riedle
- Lehrstuhl für BioMolekulare Optik
- Ludwig-Maximilians-Universität München
- 80538 München
- Germany
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36
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Algar WR, Stewart MH, Scott AM, Moon WJ, Medintz IL. Quantum dots as platforms for charge transfer-based biosensing: challenges and opportunities. J Mater Chem B 2014; 2:7816-7827. [DOI: 10.1039/c4tb00985a] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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37
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Breger J, Delehanty JB, Medintz IL. Continuing progress toward controlled intracellular delivery of semiconductor quantum dots. WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY 2014; 7:131-51. [PMID: 25154379 PMCID: PMC4345423 DOI: 10.1002/wnan.1281] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/18/2014] [Revised: 04/21/2014] [Accepted: 05/28/2014] [Indexed: 01/22/2023]
Abstract
The biological applications of luminescent semiconductor quantum dots (QDs) continue to grow at a nearly unabated pace. This growth is driven, in part, by their unique photophysical and physicochemical properties which have allowed them to be used in many different roles in cellular biology including: as superior fluorophores for a wide variety of cellular labeling applications; as active platforms for assembly of nanoscale sensors; and, more recently, as a powerful tool to understand the mechanisms of nanoparticle mediated drug delivery. Given that controlled cellular delivery is at the intersection of all these applications, the latest progress in delivering QDs to cells is examined here. A brief discussion of relevant considerations including the importance of materials preparation and bioconjugation along with the continuing issue of endosomal sequestration is initially provided for context. Methods for the cellular delivery of QDs are then highlighted including those based on passive exposure, facilitated strategies that utilize peptides or polymers and fully active modalities such as electroporation and other mechanically based methods. Following on this, the exciting advent of QD cellular delivery using multiple or combined mechanisms is then previewed. Several recent methods reporting endosomal escape of QD materials in cells are also examined in detail with a focus on the mechanisms by which access to the cytosol is achieved. The ongoing debate over QD cytotoxicity is also discussed along with a perspective on how this field will continue to evolve in the future.
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Affiliation(s)
- Joyce Breger
- Center for Bio/Molecular Science and Engineering, Code 6900, U.S. Naval Research Laboratory, Washington, DC, USA
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38
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Breger JC, Sapsford KE, Ganek J, Susumu K, Stewart MH, Medintz IL. Detecting kallikrein proteolytic activity with peptide-quantum dot nanosensors. ACS APPLIED MATERIALS & INTERFACES 2014; 6:11529-11535. [PMID: 25003700 DOI: 10.1021/am502135h] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Contamination and adulterants in both naturally derived and synthetic drugs pose a serious threat to the worldwide medical community. Developing rapid and sensitive sensors/devices to detect these hazards is thus a continuing need. We describe a hydrophilic semiconductor quantum dot (QD)-peptide Förster resonance energy transfer (FRET) nanosensor for monitoring the activity of kallikrein, a key proteolytic enzyme functioning at the initiation of the blood clotting cascade. Kallikrein is also activated by the presence of an oversulfated contaminant recently found in preparations of the drug heparin. Quantitatively monitoring the activity of this enzyme within a nanosensor format has proven challenging because of inherent steric and kinetic considerations. Our sensor is designed around a central QD donor platform which displays controlled ratios of a modular peptidyl substrate. This peptide, in turn, sequentially expresses a terminal oligohistidine motif that mediates the rapid self-assembly of peptides to the QD surface, a linker-spacer sequence to extend the peptide away from the QD surface, a kallikrein recognized-cleavage site, and terminates in an acceptor dye-labeling site. Hydrophilic QDs prepared with compact, zwitterionic surface coatings were first evaluated for their ability to self-assemble the dye-labeled peptide substrates. An optimized two-step protocol was then utilized where high concentrations of peptide were initially digested with purified human kallikrein and samples collected at distinct time points were subsequently diluted into QD-containing solutions for assaying. This sensor provided a quantitative FRET-based readout for monitoring kallikrein activity and comparison to a calibration curve allowed estimation of the relevant Michaelis-Menten kinetic descriptors. The results further suggest that almost any protease should be amenable to a QD-based FRET assay format with appropriate design considerations.
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Affiliation(s)
- Joyce C Breger
- Center for Bio/Molecular Science and Engineering, Code 6900, and ‡Optical Sciences Division, Code 5600, U.S. Naval Research Laboratory , Washington, DC, 20375 United States
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39
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Scott AM, Algar WR, Stewart MH, Trammell SA, Blanco-Canosa JB, Dawson PE, Deschamps JR, Goswami R, Oh E, Huston AL, Medintz IL. Probing the Quenching of Quantum Dot Photoluminescence by Peptide-Labeled Ruthenium(II) Complexes. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2014; 118:9239-9250. [PMID: 24817922 PMCID: PMC4010286 DOI: 10.1021/jp501039w] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2014] [Revised: 03/31/2014] [Indexed: 05/21/2023]
Abstract
Charge transfer processes with semiconductor quantum dots (QDs) have generated much interest for potential utility in energy conversion. Such configurations are generally nonbiological; however, recent studies have shown that a redox-active ruthenium(II)-phenanthroline complex (Ru2+-phen) is particularly efficient at quenching the photoluminescence (PL) of QDs, and this mechanism demonstrates good potential for application as a generalized biosensing detection modality since it is aqueous compatible. Multiple possibilities for charge transfer and/or energy transfer mechanisms exist within this type of assembly, and there is currently a limited understanding of the underlying photophysical processes in such biocomposite systems where nanomaterials are directly interfaced with biomolecules such as proteins. Here, we utilize redox reactions, steady-state absorption, PL spectroscopy, time-resolved PL spectroscopy, and femtosecond transient absorption spectroscopy (FSTA) to investigate PL quenching in biological assemblies of CdSe/ZnS QDs formed with peptide-linked Ru2+-phen. The results reveal that QD quenching requires the Ru2+ oxidation state and is not consistent with Förster resonance energy transfer, strongly supporting a charge transfer mechanism. Further, two colors of CdSe/ZnS core/shell QDs with similar macroscopic optical properties were found to have very different rates of charge transfer quenching, by Ru2+-phen with the key difference between them appearing to be the thickness of their ZnS outer shell. The effect of shell thickness was found to be larger than the effect of increasing distance between the QD and Ru2+-phen when using peptides of increasing persistence length. FSTA and time-resolved upconversion PL results further show that exciton quenching is a rather slow process consistent with other QD conjugate materials that undergo hole transfer. An improved understanding of the QD-Ru2+-phen system can allow for the design of more sophisticated charge-transfer-based biosensors using QD platforms.
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Affiliation(s)
- Amy M. Scott
- Department
of Chemistry, University of Miami, 1301 Memorial Drive, Miami, Florida 33146, United States
- E-mail:
| | - W. Russ Algar
- Center for Bio/Molecular Science and Engineering, Code 6900, Optical Sciences Division,
Code 5611, and Material Sciences and Technology, Code 6351, U.S. Naval Research Laboratory, Washington, DC 20375, United States
| | - Michael H. Stewart
- Center for Bio/Molecular Science and Engineering, Code 6900, Optical Sciences Division,
Code 5611, and Material Sciences and Technology, Code 6351, U.S. Naval Research Laboratory, Washington, DC 20375, United States
| | - Scott A. Trammell
- Center for Bio/Molecular Science and Engineering, Code 6900, Optical Sciences Division,
Code 5611, and Material Sciences and Technology, Code 6351, U.S. Naval Research Laboratory, Washington, DC 20375, United States
| | - Juan B. Blanco-Canosa
- Departments
of Cell Biology and Chemistry, The Scripps
Research Institute, La Jolla, California 92037, United States
| | - Philip E. Dawson
- Departments
of Cell Biology and Chemistry, The Scripps
Research Institute, La Jolla, California 92037, United States
| | - Jeffrey R. Deschamps
- Center for Bio/Molecular Science and Engineering, Code 6900, Optical Sciences Division,
Code 5611, and Material Sciences and Technology, Code 6351, U.S. Naval Research Laboratory, Washington, DC 20375, United States
| | - Ramasis Goswami
- Center for Bio/Molecular Science and Engineering, Code 6900, Optical Sciences Division,
Code 5611, and Material Sciences and Technology, Code 6351, U.S. Naval Research Laboratory, Washington, DC 20375, United States
| | - Eunkeu Oh
- Center for Bio/Molecular Science and Engineering, Code 6900, Optical Sciences Division,
Code 5611, and Material Sciences and Technology, Code 6351, U.S. Naval Research Laboratory, Washington, DC 20375, United States
- Sotera Defense
Solutions, Columbia, Maryland 21046, United
States
| | - Alan L. Huston
- Center for Bio/Molecular Science and Engineering, Code 6900, Optical Sciences Division,
Code 5611, and Material Sciences and Technology, Code 6351, U.S. Naval Research Laboratory, Washington, DC 20375, United States
| | - Igor L. Medintz
- Center for Bio/Molecular Science and Engineering, Code 6900, Optical Sciences Division,
Code 5611, and Material Sciences and Technology, Code 6351, U.S. Naval Research Laboratory, Washington, DC 20375, United States
- E-mail:
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40
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Shearer CJ, Cherevan A, Eder D. Application and future challenges of functional nanocarbon hybrids. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2014; 26:2295-318. [PMID: 24677386 DOI: 10.1002/adma.201305254] [Citation(s) in RCA: 148] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2013] [Revised: 12/11/2013] [Indexed: 05/22/2023]
Abstract
Hybridizing nanocarbons, such as carbon nanotubes (CNTs) or graphene, with an active material is a powerful strategy towards designing next-generation functional materials for environmental and sustainable energy applications. While research on nanocomposites, created by dispersing the nanocarbon into polymer or ceramic matrices, began almost immediately after the popularization of CNTs and graphene in 1991 and 2004, respectively, nanocarbon hybrids are a relatively recent addition to the family of composite materials. In contrast to nanocomposites, which typically combine the intrinsic properties of both compounds, nanocarbon hybrids additionally provide access to both a large surface area required for gas/liquid-solid interactions and an extended interface, through which charge and energy transfer processes create synergistic effects that result in unique properties and superior performance. This progress report looks at the history of research on nanocarbons (fullerenes, CNTs and graphene) and their composites and hybrids, presents the origin of synergistic effects, reviews the most intriguing results on nanocarbon hybrid performance in heterogeneous catalysis, electrocatalysis, photocatalysis, batteries, supercapacitors, photovoltaics and sensors, and discusses remaining challenges and future research directions.
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Affiliation(s)
- Cameron J Shearer
- Institut für Physikalische Chemie, Westfälische Wilhelms-Universität Münster, Münster, 48149, Germany
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41
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Paek K, Yang H, Lee J, Park J, Kim BJ. Efficient colorimetric pH sensor based on responsive polymer-quantum dot integrated graphene oxide. ACS NANO 2014; 8:2848-2856. [PMID: 24548181 DOI: 10.1021/nn406657b] [Citation(s) in RCA: 81] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
In this paper, we report the development of a versatile platform for a highly efficient and stable graphene oxide (GO)-based optical sensor that exhibits distinctive ratiometric color responses. To demonstrate the applicability of the platform, we fabricated a colorimetric, GO-based pH sensor that responds to a wide range of pH changes. Our sensing system is based on responsive polymer and quantum dot (QD) hybrids integrated on a single GO sheet (MQD-GO), with the GO providing an excellent signal-to-noise ratio and high dispersion stability in water. The photoluminescence emissions of the blue and orange color-emitting QDs (BQDs and OQDs) in MQD-GO can be controlled independently by different pH-responsive linkers of poly(acrylic acid) (PAA) (pKa=4.5) and poly(2-vinylpyridine) (P2VP) (pKa=3.0) that can tune the efficiencies of Förster resonance energy transfer from the BQDs to the GO and from the OQDs to the GO, respectively. As a result, the color of MQD-GO changes from orange to near-white to blue over a wide range of pH values. The detailed mechanism of the pH-dependent response of the MQD-GO sensor was elucidated by measurements of time-resolved fluorescence and dynamic light scattering. Furthermore, the MQD-GO sensor showed excellent reversibility and high dispersion stability in pure water, indicating that our system is an ideal platform for biological and environmental applications. Our colorimetric GO-based optical sensor can be expanded easily to various other multifunctional, GO-based sensors by using alternate stimuli-responsive polymers.
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Affiliation(s)
- Kwanyeol Paek
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 305-701, Republic of Korea
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42
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Jennepalli S, Pyne SG, Keller PA. [60]Fullerenyl amino acids and peptides: a review of their synthesis and applications. RSC Adv 2014. [DOI: 10.1039/c4ra07310j] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This review reports on the latest progress in the synthesis of fullerenyl amino acids and related derivatives, and categorises the molecules into functional types for different uses: these include directly attached fullerenyl amino acids, fullerenyl N- and C-capping amino acids, and those amino acids in which the [60]fullerene group is attached to the amino acid side chain.
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Affiliation(s)
- Sreenu Jennepalli
- School of Chemistry
- University of Wollongong
- Wollongong, Australia
- ARC Centre of Excellence for Electromaterials Science
- University of Wollongong
| | - Stephen G. Pyne
- School of Chemistry
- University of Wollongong
- Wollongong, Australia
| | - Paul A. Keller
- School of Chemistry
- University of Wollongong
- Wollongong, Australia
- ARC Centre of Excellence for Electromaterials Science
- University of Wollongong
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