1
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Niihori Y, Kosaka T, Negishi Y. Triplet-triplet annihilation-based photon upconversion using nanoparticles and nanoclusters. MATERIALS HORIZONS 2024; 11:2304-2322. [PMID: 38587491 DOI: 10.1039/d4mh00117f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/09/2024]
Abstract
The phenomenon of photon upconversion (UC), generating high-energy photons from low-energy photons, has attracted significant attention. In particular, triplet-triplet annihilation-based UC (TTA-UC) has been achieved by combining the excitation states of two types of molecules, called the sensitizer and emitter (or annihilator). With TTA-UC, it is possible to convert weak, incoherent near-infrared (NIR) light, which constitutes half of the solar radiation intensity, into ultraviolet and visible light that are suitable for the operation of light-responsive functional materials or devices such as solar cells and photocatalysts. Research on TTA-UC is being conducted worldwide, often employing materials with high intersystem crossing rates, such as metal porphyrins, as sensitizers. This review summarizes recent research and trends in triplet energy transfer and TTA-UC for semiconductor nanoparticles or nanocrystals with diameters in the nanometer range, also known as quantum dots, and for ligand-protected metal nanoclusters, which have even smaller well-defined sub-nanostructures. Concerning nanoparticles, transmitter ligands have been applied on the surface of the nanoparticles to efficiently transfer triplet excitons formed inside the nanoparticles to emitters. Applications are expanding to solid-state UC devices that convert NIR light to visible light. Additionally, there is active research in the development of sensitizers using more cost-effective and environmentally friendly elements. Regarding metal nanoclusters, methods have been established for the evaluation of excited states, deepening the understanding of luminescent properties and excited relaxation processes.
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Affiliation(s)
- Yoshiki Niihori
- Research Institute for Science and Technology, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan.
| | - Taiga Kosaka
- Graduate School of Science, Department of Chemistry, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
| | - Yuichi Negishi
- Research Institute for Science and Technology, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan.
- Graduate School of Science, Department of Chemistry, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
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2
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Li Q, Wu K, Zhu H, Yang Y, He S, Lian T. Charge Transfer from Quantum-Confined 0D, 1D, and 2D Nanocrystals. Chem Rev 2024; 124:5695-5763. [PMID: 38629390 PMCID: PMC11082908 DOI: 10.1021/acs.chemrev.3c00742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 03/29/2024] [Accepted: 04/02/2024] [Indexed: 05/09/2024]
Abstract
The properties of colloidal quantum-confined semiconductor nanocrystals (NCs), including zero-dimensional (0D) quantum dots, 1D nanorods, 2D nanoplatelets, and their heterostructures, can be tuned through their size, dimensionality, and material composition. In their photovoltaic and photocatalytic applications, a key step is to generate spatially separated and long-lived electrons and holes by interfacial charge transfer. These charge transfer properties have been extensively studied recently, which is the subject of this Review. The Review starts with a summary of the electronic structure and optical properties of 0D-2D nanocrystals, followed by the advances in wave function engineering, a novel way to control the spatial distribution of electrons and holes, through their size, dimension, and composition. It discusses the dependence of NC charge transfer on various parameters and the development of the Auger-assisted charge transfer model. Recent advances in understanding multiple exciton generation, decay, and dissociation are also discussed, with an emphasis on multiple carrier transfer. Finally, the applications of nanocrystal-based systems for photocatalysis are reviewed, focusing on the photodriven charge separation and recombination processes that dictate the function and performance of these materials. The Review ends with a summary and outlook of key remaining challenges and promising future directions in the field.
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Affiliation(s)
- Qiuyang Li
- Department
of Physics, University of Michigan, 450 Church St, Ann Arbor, Michigan 48109, United States
| | - Kaifeng Wu
- State
Key Laboratory of Molecular Reaction Dynamics and Collaborative Innovation
Center of Chemistry for Energy Materials (iChEM), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning 116023, China
- University
of Chinese Academy of Sciences, Beijing 100049, China
| | - Haiming Zhu
- Department
of Chemistry, Zhejiang University, Hangzhou, Zhejiang 310027, China
| | - Ye Yang
- The
State Key Laboratory of Physical Chemistry of Solid Surfaces, iChEM
(Collaborative Innovation Center of Chemistry for Energy Materials),
College of Chemistry & Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China
| | - Sheng He
- Department
of Chemistry, Emory University, Atlanta, Georgia 30322, United States
| | - Tianquan Lian
- Department
of Chemistry, Emory University, Atlanta, Georgia 30322, United States
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3
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Green PB, Lecina OS, Albertini PP, Loiudice A, Buonsanti R. Colloidal-ALD-Grown Metal Oxide Shells Enable the Synthesis of Photoactive Ligand/Nanocrystal Composite Materials. J Am Chem Soc 2023; 145:8189-8197. [PMID: 36996442 PMCID: PMC10103164 DOI: 10.1021/jacs.3c01439] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/01/2023]
Abstract
Colloidal nanocrystals (NCs) are ideal materials for a variety of applications and devices, which span from catalysis and optoelectronics to biological imaging. Organic chromophores are often combined with NCs as photoactive ligands to expand the functionality of NCs or to achieve optimal device performance. The most common methodology to introduce these chromophores involves ligand exchange procedures. Despite their ubiquitous nature, ligand exchanges suffer from a few limitations, which include reversible binding, restricted access to binding sites, and the need for purification of the samples, which can result in loss of colloidal stability. Herein, we propose a methodology to bypass these inherent issues of ligand exchange through the growth of an amorphous alumina shell by colloidal atomic layer deposition (c-ALD). We demonstrate that c-ALD creates colloidally stable composite materials, which comprise NCs and organic chromophores as photoactive ligands, by trapping the chromophores around the NC core. As representative examples, we functionalize semiconductor NCs, which include PbS, CsPbBr3, CuInS2, Cu2-xX, and lanthanide-based upconverting NCs, with polyaromatic hydrocarbons (PAH) ligands. Finally, we prove that triplet energy transfer occurs through the shell and we realize the assembly of a triplet exciton funnel structure, which cannot be obtained via conventional ligand exchange procedures. The formation of these organic/inorganic hybrid shells promises to synergistically boost catalytic and multiexcitonic processes while endowing enhanced stability to the NC core.
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Affiliation(s)
- Philippe B Green
- Laboratory of Nanochemistry for Energy Research, Institute of Chemical Sciences and Engineering, Ecole Politechnique Fédérale de Lausanne, Sion, CH-1950, Switzerland
| | - Ona Segura Lecina
- Laboratory of Nanochemistry for Energy Research, Institute of Chemical Sciences and Engineering, Ecole Politechnique Fédérale de Lausanne, Sion, CH-1950, Switzerland
| | - Petru P Albertini
- Laboratory of Nanochemistry for Energy Research, Institute of Chemical Sciences and Engineering, Ecole Politechnique Fédérale de Lausanne, Sion, CH-1950, Switzerland
| | - Anna Loiudice
- Laboratory of Nanochemistry for Energy Research, Institute of Chemical Sciences and Engineering, Ecole Politechnique Fédérale de Lausanne, Sion, CH-1950, Switzerland
| | - Raffaella Buonsanti
- Laboratory of Nanochemistry for Energy Research, Institute of Chemical Sciences and Engineering, Ecole Politechnique Fédérale de Lausanne, Sion, CH-1950, Switzerland
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4
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Wang JW, Ma F, Jin T, He P, Luo ZM, Kupfer S, Karnahl M, Zhao F, Xu Z, Jin T, Lian T, Huang YL, Jiang L, Fu LZ, Ouyang G, Yi XY. Homoleptic Al(III) Photosensitizers for Durable CO 2 Photoreduction. J Am Chem Soc 2023; 145:676-688. [PMID: 36538810 DOI: 10.1021/jacs.2c11740] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Exploiting noble-metal-free systems for high-performance photocatalytic CO2 reduction still presents a key challenge, partially due to the long-standing difficulties in developing potent and durable earth-abundant photosensitizers. Therefore, based on the very cheap aluminum metal, we have deployed a systematic series of homoleptic Al(III) photosensitizers featuring 2-pyridylpyrrolide ligands for CO2 photoreduction. The combined studies of steady-state and time-resolved spectroscopy as well as quantum chemical calculations demonstrate that in anerobic CH3CN solutions at room temperature, visible-light excitation of the Al(III) photosensitizers leads to an efficient population of singlet excited states with nanosecond-scale lifetimes and notable emission quantum yields (10-40%). The results of transient absorption spectroscopy further identified the presence of emissive singlet and unexpectedly nonemissive triplet excited states. More importantly, the introduction of methyl groups at the pyrrolide rings can greatly improve the visible-light absorption, reducing power, and durability of the Al(III) photosensitizers. With triethanolamine, BIH (1,3-dimethyl-2-phenyl-2,3-dihydro-1H-benzo[d]imidazole), and an Fe(II)-quaterpyridine catalyst, the most methylated Al(III) photosensitizer achieves an apparent quantum efficiency of 2.8% at 450 nm for selective (>99%) CO2-to-CO conversion, which is nearly 28 times that of the unmethylated one (0.1%) under identical conditions. The optimal system realizes a maximum turnover number of 10250 and higher robustness than the systems with Ru(II) and Cu(I) benchmark photosensitizers. Quenching experiments using fluorescence spectroscopy elucidate that the photoinduced electron transfer in the Al(III)-sensitized system follows a reductive quenching pathway. The remarkable tunability and cost efficiency of these Al(III) photosensitizers should allow them as promising components in noble-metal-free systems for solar fuel conversion.
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Affiliation(s)
- Jia-Wei Wang
- College of Chemistry and Chemical Engineering, Central South University, Changsha410083, China
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology (BIST), Tarragona43007, Spain
| | - Fan Ma
- College of Chemistry and Chemical Engineering, Central South University, Changsha410083, China
| | - Tao Jin
- Department of Chemistry, Emory University, 1515 Dickey Drive, Northeast, Atlanta, Georgia30322, United States
| | - Piao He
- College of Chemistry and Chemical Engineering, Central South University, Changsha410083, China
| | - Zhi-Mei Luo
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology (BIST), Tarragona43007, Spain
| | - Stephan Kupfer
- Institute of Physical Chemistry, Friedrich Schiller University Jena, Helmholtzweg 4, Jena07743, Germany
| | - Michael Karnahl
- Department of Energy Conversion, Institute of Physical and Theoretical Chemistry, Technische Universität Braunschweig, Braunschweig38106, Germany
| | - Fengyi Zhao
- Department of Chemistry, Emory University, 1515 Dickey Drive, Northeast, Atlanta, Georgia30322, United States
| | - Zihao Xu
- Department of Chemistry, Emory University, 1515 Dickey Drive, Northeast, Atlanta, Georgia30322, United States
| | - Tao Jin
- Department of Chemistry, Emory University, 1515 Dickey Drive, Northeast, Atlanta, Georgia30322, United States
| | - Tianquan Lian
- Department of Chemistry, Emory University, 1515 Dickey Drive, Northeast, Atlanta, Georgia30322, United States
| | - Yong-Liang Huang
- Department of Chemistry, Shantou University Medical College, Shantou515041, China
| | - Long Jiang
- KLGHEI of Environment and Energy Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou510275, China
| | - Li-Zhi Fu
- College of Chemistry and Chemical Engineering, Central South University, Changsha410083, China
| | - Gangfeng Ouyang
- KLGHEI of Environment and Energy Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou510275, China
| | - Xiao-Yi Yi
- College of Chemistry and Chemical Engineering, Central South University, Changsha410083, China
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5
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Jin T, He S, Zhu Y, Egap E, Lian T. Bright State Sensitized Triplet Energy Transfer from Quantum Dot to Molecular Acceptor Revealed by Temperature Dependent Energy Transfer Dynamics. NANO LETTERS 2022; 22:3897-3903. [PMID: 35561343 DOI: 10.1021/acs.nanolett.2c00017] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Quantum dot (QD) sensitized molecular triplet excited state generation has been a promising alternative for traditional triplet state harvesting schemes. However, the correlation between QD bright/dark states and QD sensitized triplet energy transfer (TET) has been unclear. Herein, we studied the bright/dark states contribution to TET with CdSe/CdS core/shell QD-oligothiophene as the model system. Equilibrium between QD bright and dark states was tuned by changing temperature, and TET dynamics were monitored with transient absorption spectroscopy. Analysis of acceptor triplet excited state growth kinetics yields rates of TET from bright and dark states as 0.492 ± 0.011 ns-1 and 0.0271 ± 0.0014 ns-1 at 5 K, suggesting significant contribution of bright states to TET. The result was rationalized by bright state wave function components with the same electron/hole spin projections leading to nonzero TET probability. The study provides new insights into QD sensitized TET mechanisms and inspiration for future TET efficiency optimization through QD exciton engineering.
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Affiliation(s)
- Tao Jin
- Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, Georgia 30322, United States
| | - Sheng He
- Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, Georgia 30322, United States
| | - Yifan Zhu
- Department of Materials Science and NanoEngineering, Rice University, 6100 Main Street, Houston, Texas 77005, United States
| | - Eilaf Egap
- Department of Materials Science and NanoEngineering, Rice University, 6100 Main Street, Houston, Texas 77005, United States
- Department of Chemical and Biomolecular Engineering, Rice University, 6100 Main Street, Houston, Texas 77005, United States
| | - Tianquan Lian
- Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, Georgia 30322, United States
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6
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Buday P, Kasahara C, Hofmeister E, Kowalczyk D, Farh MK, Riediger S, Schulz M, Wächtler M, Furukawa S, Saito M, Ziegenbalg D, Gräfe S, Bäuerle P, Kupfer S, Dietzek‐Ivanšić B, Weigand W. Activating a [FeFe] Hydrogenase Mimic for Hydrogen Evolution under Visible Light**. Angew Chem Int Ed Engl 2022; 61:e202202079. [PMID: 35178850 PMCID: PMC9313588 DOI: 10.1002/anie.202202079] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Indexed: 11/25/2022]
Abstract
Inspired by the active center of the natural [FeFe] hydrogenases, we designed a compact and precious metal‐free photosensitizer‐catalyst dyad (PS‐CAT) for photocatalytic hydrogen evolution under visible light irradiation. PS‐CAT represents a prototype dyad comprising π‐conjugated oligothiophenes as light absorbers. PS‐CAT and its interaction with the sacrificial donor 1,3‐dimethyl‐2‐phenylbenzimidazoline were studied by steady‐state and time‐resolved spectroscopy coupled with electrochemical techniques and visible light‐driven photocatalytic investigations. Operando EPR spectroscopy revealed the formation of an active [FeIFe0] species—in accordance with theoretical calculations—presumably driving photocatalysis effectively (TON≈210).
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Affiliation(s)
- Philipp Buday
- Institute of Inorganic and Analytical Chemistry Friedrich Schiller University Jena Humboldtstraße 8 07743 Jena Germany
| | - Chizuru Kasahara
- Institute of Inorganic and Analytical Chemistry Friedrich Schiller University Jena Humboldtstraße 8 07743 Jena Germany
- Department of Chemistry Graduate School of Science and Engineering Saitama University Shimo-okubo, Sakura-ku, Saitama City, Saitama 338-8570 Japan
| | - Elisabeth Hofmeister
- Department Functional Interfaces Leibniz Institute of Photonic Technology Jena (Leibniz-IPHT) Albert-Einstein-Straße 9 07745 Jena Germany
| | - Daniel Kowalczyk
- Institute of Chemical Engineering Ulm University Albert-Einstein-Allee 11 89081 Ulm Germany
| | - Micheal K. Farh
- Institute of Inorganic and Analytical Chemistry Friedrich Schiller University Jena Humboldtstraße 8 07743 Jena Germany
| | - Saskia Riediger
- Institute of Organic Chemistry II and Advanced Materials Ulm University Albert-Einstein-Allee 11 89081 Ulm Germany
| | - Martin Schulz
- Department Functional Interfaces Leibniz Institute of Photonic Technology Jena (Leibniz-IPHT) Albert-Einstein-Straße 9 07745 Jena Germany
- Institute of Physical Chemistry Friedrich Schiller University Jena Helmholtzweg 4 07743 Jena Germany
| | - Maria Wächtler
- Department Functional Interfaces Leibniz Institute of Photonic Technology Jena (Leibniz-IPHT) Albert-Einstein-Straße 9 07745 Jena Germany
- Institute of Physical Chemistry Friedrich Schiller University Jena Helmholtzweg 4 07743 Jena Germany
- Abbe Center of Photonics (ACP) Friedrich Schiller University Jena Albert-Einstein-Straße 6 07745 Jena Germany
| | - Shunsuke Furukawa
- Department of Chemistry Graduate School of Science and Engineering Saitama University Shimo-okubo, Sakura-ku, Saitama City, Saitama 338-8570 Japan
| | - Masaichi Saito
- Department of Chemistry Graduate School of Science and Engineering Saitama University Shimo-okubo, Sakura-ku, Saitama City, Saitama 338-8570 Japan
| | - Dirk Ziegenbalg
- Institute of Chemical Engineering Ulm University Albert-Einstein-Allee 11 89081 Ulm Germany
| | - Stefanie Gräfe
- Institute of Physical Chemistry Friedrich Schiller University Jena Helmholtzweg 4 07743 Jena Germany
- Abbe Center of Photonics (ACP) Friedrich Schiller University Jena Albert-Einstein-Straße 6 07745 Jena Germany
- Center for Energy and Environmental Chemistry Jena (CEEC Jena) Friedrich Schiller University Jena Philosophenweg 8 07743 Jena Germany
- Fraunhofer Institute for Applied Optics and Precision Engineering Albert-Einstein-Straße 7 07745 Jena Germany
| | - Peter Bäuerle
- Institute of Organic Chemistry II and Advanced Materials Ulm University Albert-Einstein-Allee 11 89081 Ulm Germany
| | - Stephan Kupfer
- Institute of Physical Chemistry Friedrich Schiller University Jena Helmholtzweg 4 07743 Jena Germany
| | - Benjamin Dietzek‐Ivanšić
- Department Functional Interfaces Leibniz Institute of Photonic Technology Jena (Leibniz-IPHT) Albert-Einstein-Straße 9 07745 Jena Germany
- Institute of Physical Chemistry Friedrich Schiller University Jena Helmholtzweg 4 07743 Jena Germany
- Abbe Center of Photonics (ACP) Friedrich Schiller University Jena Albert-Einstein-Straße 6 07745 Jena Germany
- Center for Energy and Environmental Chemistry Jena (CEEC Jena) Friedrich Schiller University Jena Philosophenweg 8 07743 Jena Germany
| | - Wolfgang Weigand
- Institute of Inorganic and Analytical Chemistry Friedrich Schiller University Jena Humboldtstraße 8 07743 Jena Germany
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7
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Zhang X, Castellano FN. Thermally Activated Bright-State Delayed Blue Photoluminescence from InP Quantum Dots. J Phys Chem Lett 2022; 13:3706-3711. [PMID: 35439008 DOI: 10.1021/acs.jpclett.2c00582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Thermally activated delayed photoluminescence (TADPL) generated from organic chromophore-functionalized quantum dots (QDs) is potentially beneficial for persistent light generation, QD-based PL sensors, and photochemical synthesis. While previous research demonstrated that naphthoic acid-functionalized InP QDs can be employed as low-toxicity, blue-emissive TADPL materials, the electron trap states inherent in these nanocrystals inhibited the observation of TADPL emerging from the higher-lying bright states. Here, we address this challenge by employing the heterocyclic aromatic compound 8-quinolinecarboxylic acid (QCA), whose triplet energy is strategically positioned to bypass the electron trap states in InP QDs. Transient absorption and photoluminescence spectroscopies revealed the generation of bright-state TADPL from QCA-functionalized InP QDs resulting from a nearly quantitative Dexter-like triplet-triplet energy transfer (TTET) from photoexcited InP QDs to surface-anchored QCA chromophores followed by reverse TTET from these bound molecules to the InP QDs. This modification resulted in a 119-fold increase in the average PL intensity decay time with respect to the as-synthesized InP QDs.
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Affiliation(s)
- Xingao Zhang
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695-8204, United States
| | - Felix N Castellano
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695-8204, United States
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8
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Buday P, Kasahara C, Hofmeister E, Kowalczyk D, Farh MK, Riediger S, Schulz M, Wächtler M, Furukawa S, Saito M, Ziegenbalg D, Gräfe S, Bäuerle P, Kupfer S, Dietzek‐Ivanšić B, Weigand W. Aktivierung eines biomimetischen [FeFe]‐Hydrogenase‐Komplexes für die H
2
‐Produktion mit sichtbarem Licht**. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202202079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Philipp Buday
- Institut für Anorganische und Analytische Chemie Friedrich-Schiller-Universität Jena Humboldtstraße 8 07743 Jena Deutschland
| | - Chizuru Kasahara
- Institut für Anorganische und Analytische Chemie Friedrich-Schiller-Universität Jena Humboldtstraße 8 07743 Jena Deutschland
- Institut für Chemie Graduiertenschule für Naturwissenschaften und Ingenieurwissenschaften Universität Saitama Shimo-okubo, Sakura-ku, Saitama-Stadt, Saitama 338-8570 Japan
| | - Elisabeth Hofmeister
- Abteilung Funktionale Grenzflächen Leibniz-Institut für Photonische Technologien Jena (Leibniz-IPHT) Albert-Einstein-Straße 9 07745 Jena Deutschland
| | - Daniel Kowalczyk
- Institut für Chemieingenieurwesen Universität Ulm Albert-Einstein-Allee 11 89081 Ulm Deutschland
| | - Micheal K. Farh
- Institut für Anorganische und Analytische Chemie Friedrich-Schiller-Universität Jena Humboldtstraße 8 07743 Jena Deutschland
| | - Saskia Riediger
- Institut für Organische Chemie II und Neue Materialien Universität Ulm Albert-Einstein-Allee 11 89081 BayreuthUlm Deutschland
| | - Martin Schulz
- Abteilung Funktionale Grenzflächen Leibniz-Institut für Photonische Technologien Jena (Leibniz-IPHT) Albert-Einstein-Straße 9 07745 Jena Deutschland
- Institut für Physikalische Chemie Friedrich-Schiller-Universität Jena Helmholtzweg 4 07743 Jena Deutschland
| | - Maria Wächtler
- Abteilung Funktionale Grenzflächen Leibniz-Institut für Photonische Technologien Jena (Leibniz-IPHT) Albert-Einstein-Straße 9 07745 Jena Deutschland
- Institut für Physikalische Chemie Friedrich-Schiller-Universität Jena Helmholtzweg 4 07743 Jena Deutschland
- Abbe Center of Photonics (ACP) Friedrich-Schiller-Universität Jena Albert-Einstein-Straße 6 07745 Jena Deutschland
| | - Shunsuke Furukawa
- Institut für Chemie Graduiertenschule für Naturwissenschaften und Ingenieurwissenschaften Universität Saitama Shimo-okubo, Sakura-ku, Saitama-Stadt, Saitama 338-8570 Japan
| | - Masaichi Saito
- Institut für Chemie Graduiertenschule für Naturwissenschaften und Ingenieurwissenschaften Universität Saitama Shimo-okubo, Sakura-ku, Saitama-Stadt, Saitama 338-8570 Japan
| | - Dirk Ziegenbalg
- Institut für Chemieingenieurwesen Universität Ulm Albert-Einstein-Allee 11 89081 Ulm Deutschland
| | - Stefanie Gräfe
- Institut für Physikalische Chemie Friedrich-Schiller-Universität Jena Helmholtzweg 4 07743 Jena Deutschland
- Abbe Center of Photonics (ACP) Friedrich-Schiller-Universität Jena Albert-Einstein-Straße 6 07745 Jena Deutschland
- Center for Energy and Environmental Chemistry Jena (CEEC Jena) Friedrich-Schiller-Universität Jena Philosophenweg 8 07743 Jena Deutschland
- Fraunhofer-Institut für Angewandte Optik und Feinmechanik Albert-Einstein-Straße 7 07745 Jena Deutschland
| | - Peter Bäuerle
- Institut für Organische Chemie II und Neue Materialien Universität Ulm Albert-Einstein-Allee 11 89081 BayreuthUlm Deutschland
| | - Stephan Kupfer
- Institut für Physikalische Chemie Friedrich-Schiller-Universität Jena Helmholtzweg 4 07743 Jena Deutschland
| | - Benjamin Dietzek‐Ivanšić
- Abteilung Funktionale Grenzflächen Leibniz-Institut für Photonische Technologien Jena (Leibniz-IPHT) Albert-Einstein-Straße 9 07745 Jena Deutschland
- Institut für Physikalische Chemie Friedrich-Schiller-Universität Jena Helmholtzweg 4 07743 Jena Deutschland
- Abbe Center of Photonics (ACP) Friedrich-Schiller-Universität Jena Albert-Einstein-Straße 6 07745 Jena Deutschland
- Center for Energy and Environmental Chemistry Jena (CEEC Jena) Friedrich-Schiller-Universität Jena Philosophenweg 8 07743 Jena Deutschland
| | - Wolfgang Weigand
- Institut für Anorganische und Analytische Chemie Friedrich-Schiller-Universität Jena Humboldtstraße 8 07743 Jena Deutschland
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9
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Ahmad W, Wang J, Li H, Ouyang Q, Wu W, Chen Q. Strategies for combining triplet–triplet annihilation upconversion sensitizers and acceptors in a host matrix. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.213944] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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10
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Maiti S, Poonia D, Schiettecatte P, Hens Z, Geiregat P, Kinge S, Siebbeles LD. Generating Triplets in Organic Semiconductor Tetracene upon Photoexcitation of Transition Metal Dichalcogenide ReS 2. J Phys Chem Lett 2021; 12:5256-5260. [PMID: 34048249 PMCID: PMC8201445 DOI: 10.1021/acs.jpclett.1c01411] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
We studied the dynamics of transfer of photoexcited electronic states in a bilayer of the two-dimensional transition metal dichalcogenide ReS2 and tetracene, with the aim to produce triplets in the latter. This material combination was used as the band gap of ReS2 (1.5 eV) is slightly larger than the triplet energy of tetracene (1.25 eV). Using time-resolved optical absorption spectroscopy, transfer of photoexcited states from ReS2 to triplet states in tetracene was found to occur within 5 ps with an efficiency near 38%. This result opens up new possibilities for heterostructure design of two-dimensional materials with suitable organics to produce long-lived triplets. Triplets are of interest as sensitizers in a wide variety of applications including optoelectronics, photovoltaics, photocatalysis, and photon upconversion.
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Affiliation(s)
- Sourav Maiti
- Optoelectronic
Materials Section, Department of Chemical Engineering, Delft University of Technology, Van der Maasweg 9, Delft 2629 HZ, The Netherlands
| | - Deepika Poonia
- Optoelectronic
Materials Section, Department of Chemical Engineering, Delft University of Technology, Van der Maasweg 9, Delft 2629 HZ, The Netherlands
| | - Pieter Schiettecatte
- Physics
and Chemistry of Nanostructures, Ghent University, Ghent, Belgium
- Center
for Nano and Biophotonics, Ghent University, Ghent, Belgium
| | - Zeger Hens
- Physics
and Chemistry of Nanostructures, Ghent University, Ghent, Belgium
- Center
for Nano and Biophotonics, Ghent University, Ghent, Belgium
| | - Pieter Geiregat
- Physics
and Chemistry of Nanostructures, Ghent University, Ghent, Belgium
- Center
for Nano and Biophotonics, Ghent University, Ghent, Belgium
| | - Sachin Kinge
- Optoelectronic
Materials Section, Department of Chemical Engineering, Delft University of Technology, Van der Maasweg 9, Delft 2629 HZ, The Netherlands
- Toyota
Motor Europe, Materials Research & Development, Hoge Wei 33, B-1913 Zaventem, Belgium
| | - Laurens D.A. Siebbeles
- Optoelectronic
Materials Section, Department of Chemical Engineering, Delft University of Technology, Van der Maasweg 9, Delft 2629 HZ, The Netherlands
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11
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Yonemoto DT, Papa CM, Sheykhi S, Castellano FN. Controlling Thermally Activated Delayed Photoluminescence in CdSe Quantum Dots through Triplet Acceptor Surface Coverage. J Phys Chem Lett 2021; 12:3718-3723. [PMID: 33835808 DOI: 10.1021/acs.jpclett.1c00746] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Quantum-dot/molecule composites (QD/mol) have demonstrated useful photochemical properties for many photonic and optoelectronic applications; however, a comprehensive understanding of these materials remains elusive. This work introduces a series of cadmium(II) selenide/1-pyrenecarboxylic acid (CdSe/PCA) nanomaterials featuring bespoke PCA surface coverage on CdSe585 (coded by the peak of the first exciton absorption band) to glean insight into the QD/mol photophysical behavior. Tailoring the energy gap between the CdSe585 first exciton band (2.1 eV) and the lowest PCA triplet level (T1 = 2.0 eV) to be nearly isoenergetic, strong thermally activated delayed photoluminescence (TADPL) is observed resulting from reverse triplet-triplet energy transfer. The resultant average decay time constant (τobs) of the photoluminescence emanating from CdSe585 is deterministically controlled with surface-bound PCAn chromophores (n = average number of adsorbed PCA molecules) by shifting the triplet excited state equilibrium from the CdSe585 to the PCA molecular triplet reservoir as a function of n.
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Affiliation(s)
- Daniel T Yonemoto
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695-8204, United States
| | - Christopher M Papa
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695-8204, United States
| | - Sara Sheykhi
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695-8204, United States
| | - Felix N Castellano
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695-8204, United States
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12
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Steiner AM, Lissel F, Fery A, Lauth J, Scheele M. Perspektiven gekoppelter organisch‐anorganischer Nanostrukturen für Ladungs‐ und Energietransferanwendungen. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.201916402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Anja Maria Steiner
- Institut Physikalische Chemie und Physik der Polymere Leibniz-Institut für Polymerforschung Hohe Str. 6 01069 Dresden Deutschland
| | - Franziska Lissel
- Institut Makromolekulare Chemie Leibniz-Institut für Polymerforschung Hohe Str. 6 01069 Dresden Deutschland
- Technische Universität Dresden Mommsenstr. 4 01064 Dresden Deutschland
| | - Andreas Fery
- Institut Physikalische Chemie und Physik der Polymere Leibniz-Institut für Polymerforschung Hohe Str. 6 01069 Dresden Deutschland
- Technische Universität Dresden Mommsenstr. 4 01064 Dresden Deutschland
| | - Jannika Lauth
- Leibniz-Universität Hannover Institut für Physikalische Chemie und Elektrochemie Callinstr. 3A 30167 Hannover Deutschland
| | - Marcus Scheele
- Eberhard-Karls-Universität Tübingen Institut für Physikalische und Theoretische Chemie Auf der Morgenstelle 18 72076 Tübingen Deutschland
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13
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Steiner AM, Lissel F, Fery A, Lauth J, Scheele M. Prospects of Coupled Organic-Inorganic Nanostructures for Charge and Energy Transfer Applications. Angew Chem Int Ed Engl 2021; 60:1152-1175. [PMID: 32173981 PMCID: PMC7821299 DOI: 10.1002/anie.201916402] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Indexed: 12/20/2022]
Abstract
We review the field of organic-inorganic nanocomposites with a focus on materials that exhibit a significant degree of electronic coupling across the hybrid interface. These nanocomposites undergo a variety of charge and energy transfer processes, enabling optoelectronic applications in devices which exploit singlet fission, triplet energy harvesting, photon upconversion or hot charge carrier transfer. We discuss the physical chemistry of the most common organic and inorganic components. Based on those we derive synthesis and assembly strategies and design criteria on material and device level with a focus on photovoltaics, spin memories or optical upconverters. We conclude that future research in the field should be directed towards an improved understanding of the binding motif and molecular orientation at the hybrid interface.
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Affiliation(s)
- Anja Maria Steiner
- Institute for Physical Chemistry and Polymer PhysicsLeibniz Institute of Polymer ResearchHohe Str. 601069DresdenGermany
| | - Franziska Lissel
- Institute of Macromolecular ChemistryLeibniz Institute of Polymer ResearchHohe Str. 601069DresdenGermany
- Technische Universität DresdenMommsenstr. 401064DresdenGermany
| | - Andreas Fery
- Institute for Physical Chemistry and Polymer PhysicsLeibniz Institute of Polymer ResearchHohe Str. 601069DresdenGermany
- Technische Universität DresdenMommsenstr. 401064DresdenGermany
| | - Jannika Lauth
- Leibniz Universität HannoverInstitute of Physical Chemistry and ElectrochemistryCallinstr. 3A30167HannoverGermany
| | - Marcus Scheele
- Eberhard Karls-Universität TübingenInstitute of Physical and Theoretical ChemistryAuf der Morgenstelle 1872076TübingenGermany
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14
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Xu Z, Huang Z, Jin T, Lian T, Tang ML. Mechanistic Understanding and Rational Design of Quantum Dot/Mediator Interfaces for Efficient Photon Upconversion. Acc Chem Res 2021; 54:70-80. [PMID: 33141563 DOI: 10.1021/acs.accounts.0c00526] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The semiconductor-nanocrystal-sensitized, three-component upconversion system has made great strides over the past 5 years. The three components (i.e., triplet photosensitizer, mediator, and emitter) each play critical roles in determining the input and output photon energy and overall quantum efficiency (QE). The nanocrystal photosensitizer converts the absorbed photon into singlet excitons and then triplet excitons via intersystem crossing. The mediator accepts the triplet exciton via either direct Dexter-type triplet energy transfer (TET) or sequential charge transfer (CT) while extending the exciton lifetime. Through a second triplet energy-transfer step from the mediator to the emitter, the latter is populated in its lowest excited triplet state. Triplet-triplet annihilation (TTA) between two triplet emitters generates the emitter in its bright singlet state, which then emits the upconverted photon. Quantum dots (QD) have a tunable band gap, large extinction coefficient, and small singlet-triplet energy losses compared to metal-ligand charge-transfer complexes. This high triplet exciton yield makes QDs good candidates for photosensitizers. In terms of driving triplet energy transfer, the triplet energy of the mediator should be slightly lower than the triplet exciton energy of the QD sensitizer for a downhill energy landscape with minimal energy loss. The same energy cascade is also required for the transfer from the mediator to the emitter. Finally, the triplet energy of the emitter must be slightly larger than one-half of its singlet energy to ensure that TTA is exothermic. Optimization of the sensitizer, mediator, and emitter will lead to an increase in the anti-Stokes shift and the total quantum efficiency. Evaluating each individual step's efficiency and kinetics is necessary for the understanding of the limiting factors in existing systems.This review summarizes chalcogenide QD-based photon upconversion systems with a focus on the mechanistic aspects of triplet energy transfer conducted by the Tang and Lian groups. Via time-resolved spectroscopy, the rates and major loss pathways associated with the two triplet energy-transfer steps were identified. The studies are focused on the near-infrared (NIR) to visible (VIS) PbS-tetracene-based systems as they allow systematic control of the QD, mediator, and emitter. Our results show that the mediator triplet state is mostly formed by direct TET from the QD and the transfer rate is influenced by the density of bound mediator molecules. Charge transfer, a loss pathway, does not produce triplet excitons and can be minimized by adding an inert shell to the QD. This transfer rate decreases exponentially with the distance between the QD and mediator molecule. The second TET rate was found to be much slower than the diffusion-limited collision rate, which results in the triplet lifetime of the mediator being the main factor limiting its efficiency. Finally, the total quantum efficiency can be calculated using these measured quantities including the TET1 and TET2 efficiencies. The agreement between calculated and measured quantum efficiencies suggests a firm understanding of QD-sensitized photon upconversion. We believe the above conclusions are general and should be widely applicable to similar systems, including singlet fission in hybrid organic-nanocrystal materials.
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Affiliation(s)
- Zihao Xu
- Department of Chemistry, Emory University, Atlanta, Georgia 30322, United States
| | - Zhiyuan Huang
- Department of Chemistry, University of California—Riverside, Riverside, California 92521, United States
| | - Tao Jin
- Department of Chemistry, Emory University, Atlanta, Georgia 30322, United States
| | - Tianquan Lian
- Department of Chemistry, Emory University, Atlanta, Georgia 30322, United States
| | - Ming L. Tang
- Department of Chemistry, University of California—Riverside, Riverside, California 92521, United States
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15
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Xu Z, Huang Y, Cao Y, Jin T, Miller KA, Kaledin AL, Musaev DG, Lian T, Egap E. Enhanced intersystem crossing of boron dipyrromethene by TEMPO radical. J Chem Phys 2020; 153:154201. [PMID: 33092372 DOI: 10.1063/5.0025972] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Radical enhanced intersystem crossing (EISC) of organic chromophores is an important approach to generate a long-lived triplet state for various electronic and optoelectronic applications. However, structural factors and design rules to promote EISC are not entirely clear. In this work, we report a series of boron dipyrromethene (BODIPY) derivatives covalently linked with a 2,2,6,6-tetramethyl-1-piperidinyloxyl (TEMPO) radical with varying distances and topologies. We show that the incorporation of the TEMPO radical to BODIPY results in strong fluorescence quenching by up to 85% as a result of EISC and enhanced internal conversion. In BDP-2AR [2-(4-methyleneamino-TEMPO) BODIPY], a dyad with the shortest BODIPY-TEMPO through-bond distance, we observe the fastest EISC rate (τisc = 1.4 ns) and the longest triplet excited state lifetime (τT = 32 µs) compared to other distance and geometry variations. Contrary to previous reports and a general presumption, the BODIPY-TEMPO through-bond distance in this system does not play a significant role on the triplet formation rate and yield. Density functional theory suggests a folding of the TEMPO radical to form a sandwich-like structure with a BODIPY ring that leads to a decrease in the through-space distance, providing a new and an interesting insight for the radical enhanced intersystem.
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Affiliation(s)
- Zihao Xu
- Department of Chemistry and Cherry L. Emerson Center for Scientific Computation, Emory University, Atlanta, Georgia 30322, USA
| | - Yiming Huang
- Department of Materials Science and NanoEngineering, Rice University, Houston, Texas 77005, USA
| | - Yulei Cao
- Department of Chemistry and Cherry L. Emerson Center for Scientific Computation, Emory University, Atlanta, Georgia 30322, USA
| | - Tao Jin
- Department of Chemistry and Cherry L. Emerson Center for Scientific Computation, Emory University, Atlanta, Georgia 30322, USA
| | - Kristen A Miller
- Department of Materials Science and NanoEngineering, Rice University, Houston, Texas 77005, USA
| | - Alexey L Kaledin
- Department of Chemistry and Cherry L. Emerson Center for Scientific Computation, Emory University, Atlanta, Georgia 30322, USA
| | - Djamaladdin G Musaev
- Department of Chemistry and Cherry L. Emerson Center for Scientific Computation, Emory University, Atlanta, Georgia 30322, USA
| | - Tianquan Lian
- Department of Chemistry and Cherry L. Emerson Center for Scientific Computation, Emory University, Atlanta, Georgia 30322, USA
| | - Eilaf Egap
- Department of Materials Science and NanoEngineering, Rice University, Houston, Texas 77005, USA
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16
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Huang Z, Xu Z, Huang T, Gray V, Moth-Poulsen K, Lian T, Tang ML. Evolution from Tunneling to Hopping Mediated Triplet Energy Transfer from Quantum Dots to Molecules. J Am Chem Soc 2020; 142:17581-17588. [DOI: 10.1021/jacs.0c07727] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Zhiyuan Huang
- Department of Chemistry, University of California, Riverside, Riverside, California 92521, United States
| | - Zihao Xu
- Department of Chemistry, Emory University, Atlanta, Georgia 30322, United States
| | - Tingting Huang
- Department of Chemistry, University of California, Riverside, Riverside, California 92521, United States
| | - Victor Gray
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, 412 96 Gothenburg, Sweden
- Department of Chemistry − Ångström Laboratory, Uppsala University, Box
523, 751 20 Uppsala, Sweden
| | - Kasper Moth-Poulsen
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, 412 96 Gothenburg, Sweden
| | - Tianquan Lian
- Department of Chemistry, Emory University, Atlanta, Georgia 30322, United States
| | - Ming Lee Tang
- Department of Chemistry, University of California, Riverside, Riverside, California 92521, United States
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17
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Jin T, Lian T. Trap state mediated triplet energy transfer from CdSe quantum dots to molecular acceptors. J Chem Phys 2020; 153:074703. [PMID: 32828113 DOI: 10.1063/5.0022061] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Triplet energy transfer (TET) from quantum dots (QDs) to molecular acceptors has received intense research interest because of its promising application as triplet sensitizers in photon up-conversion. Compared to QD band edge excitons, the role and mechanism of trap state mediated TET in QD-acceptor complexes have not been well understood despite the prevalence of trap states in many QDs. Herein, TET from trap states in CdSe QDs to adsorbed 9-anthracene carboxylic acid (ACA) is studied with steady state photoluminescence, transient absorption spectroscopy, and time-resolved photoluminescence. We show that both band edge and trap excitons undergo direct Dexter energy transfer to form the triplet excited state of ACA. The rate of TET decreases from (0.340 ± 0.002) ns-1 to (0.124 ± 0.004) ns-1 for trap excitons with decreasing energy from 2.25 eV to 1.57 eV, while the TET rate from band edge excitons is 13-37 times faster than trapped excitons. Despite slightly higher TET quantum efficiency from band edge excitons (∼100%) than trapped excitons (∼95%), the overall TET process from CdSe to ACA is dominated by trapped excitons because of their larger relative populations. This result demonstrates the important role of trap state mediated TET in nanocrystal sensitized triplet generation.
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Affiliation(s)
- Tao Jin
- Department of Chemistry, Emory University, 1515 Dickey Dr., Atlanta, Georgia 30322, USA
| | - Tianquan Lian
- Department of Chemistry, Emory University, 1515 Dickey Dr., Atlanta, Georgia 30322, USA
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18
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Yonemoto DT, Papa CM, Mongin C, Castellano FN. Thermally Activated Delayed Photoluminescence: Deterministic Control of Excited-State Decay. J Am Chem Soc 2020; 142:10883-10893. [PMID: 32497428 DOI: 10.1021/jacs.0c03331] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Thermally activated photophysical processes are ubiquitous in numerous organic and metal-organic molecules, leading to chromophores with excited-state properties that can be considered an equilibrium mixture of the available low-lying states. Relative populations of the equilibrated states are governed by temperature. Such molecules have been devised as high quantum yield emitters in modern organic light-emitting diode technology and for deterministic excited-state lifetime control to enhance chemical reactivity in solar energy conversion and photocatalytic schemes. The recent discovery of thermally activated photophysics at CdSe nanocrystal-molecule interfaces enables a new paradigm wherein molecule-quantum dot constructs are used to systematically generate material with predetermined photophysical response and excited-state properties. Semiconductor nanomaterials feature size-tunable energy level engineering, which considerably expands the purview of thermally activated photophysics beyond what is possible using only molecules. This Perspective is intended to provide a nonexhaustive overview of the advances that led to the integration of semiconductor quantum dots in thermally activated delayed photoluminescence (TADPL) schemes and to identify important challenges moving into the future. The initial establishment of excited-state lifetime extension utilizing triplet-triplet excited-state equilibria is detailed. Next, advances involving the rational design of molecules composed of both metal-containing and organic-based chromophores that produce the desired TADPL are described. Finally, the recent introduction of semiconductor nanomaterials into hybrid TADPL constructs is discussed, paving the way toward the realization of fine-tuned deterministic control of excited-state decay. It is envisioned that libraries of synthetically facile composites will be broadly deployed as photosensitizers and light emitters for numerous synthetic and optoelectronic applications in the near future.
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Affiliation(s)
- Daniel T Yonemoto
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695-8204, United States
| | - Christopher M Papa
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695-8204, United States
| | - Cedric Mongin
- Laboratoire PPSM, ENS Paris-Saclay, 61 Avenue du Président Wilson, 94235 Cachan CEDEX, France
| | - Felix N Castellano
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695-8204, United States
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19
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Jin T, Uhlikova N, Xu Z, Zhu Y, Huang Y, Egap E, Lian T. Competition of Dexter, Förster, and charge transfer pathways for quantum dot sensitized triplet generation. J Chem Phys 2020; 152:214702. [DOI: 10.1063/5.0009833] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Tao Jin
- Department of Chemistry, Emory University, 1515 Dickey Dr., Atlanta, Georgia 30322, USA
| | - Natalie Uhlikova
- Department of Chemistry, Emory University, 1515 Dickey Dr., Atlanta, Georgia 30322, USA
| | - Zihao Xu
- Department of Chemistry, Emory University, 1515 Dickey Dr., Atlanta, Georgia 30322, USA
| | - Yifan Zhu
- Department of Materials Science and NanoEngineering, Rice University, 6100 Main St., Houston, Texas 77005, USA
| | - Yiming Huang
- Department of Materials Science and NanoEngineering, Rice University, 6100 Main St., Houston, Texas 77005, USA
| | - Eilaf Egap
- Department of Materials Science and NanoEngineering, Rice University, 6100 Main St., Houston, Texas 77005, USA
- Department of Chemical and Biomolecular Engineering, Rice University, 6100 Main St., Houston, Texas 77005, USA
| | - Tianquan Lian
- Department of Chemistry, Emory University, 1515 Dickey Dr., Atlanta, Georgia 30322, USA
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