1
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Wang S, Liu R, Li J, Meng C, Liu J, Chen J, Cheng P, Wu K. Blue Long Afterglow and Ultra Broadband Vis-NIR Emission from All-Inorganic Copper-Doped Silver Halide Single Crystals. Angew Chem Int Ed Engl 2024; 63:e202403927. [PMID: 38632085 DOI: 10.1002/anie.202403927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Revised: 03/15/2024] [Accepted: 04/17/2024] [Indexed: 04/19/2024]
Abstract
All-inorganic metal halides with afterglow emission have attracted increasing attention due to their significantly longer afterglow duration and higher stability compared to their organic-inorganic hybrid counterparts. However, their afterglow colors have not yet reached the blue spectral region. Here, we report all-inorganic copper-doped Rb2AgBr3 single crystals with ultralong blue afterglow (>300 s) by modulating defect states through doping engineering. The introduction of copper(I) ions into Rb2AgBr3 facilitates the formation of bromine vacancies, thus increasing the density of trap states available for charge storage and enabling bright, persistent emission after ceasing the excitation. Moreover, cascade energy transfer between distinct emissive centers in the crystals results in ultra-broadband photoluminescence, not only covering the whole white light with near-unity quantum yield but also extending into the near-infrared region. This 'cocktail' of exotic light-emission properties, in conjunction with the excellent stability of copper-doped Rb2AgBr3 crystals, allowed us to demonstrate their implementation to solid-state lighting, night vision, and intelligent anti-counterfeiting.
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Affiliation(s)
- Sijia Wang
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Runze Liu
- School of Science, Dalian Jiaotong University, Dalian, 116028, P. R. China
| | - Juntao Li
- Key Laboratory of Chemical Lasers, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, P. R. China
| | - Caixia Meng
- Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, P. R. China
| | - Jianyong Liu
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Junsheng Chen
- Nano-Science Center & Department of Chemistry, University of Copenhagen, Universitetsparken 5, 2100, Copenhagen, Denmark
| | - Pengfei Cheng
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Kaifeng Wu
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
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2
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Mikajiri T, Komino T, Yamada JI, Tajima H. Device parameter to evaluate exciton energy transfer in organic whispering-gallery-mode microresonators and its dependence on the amplified spontaneous emission threshold. Phys Chem Chem Phys 2024; 26:2277-2283. [PMID: 38165664 DOI: 10.1039/d3cp05093a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2024]
Abstract
Exciton energy transfer in organic whispering-gallery-mode (WGM) resonators and its effect on the amplified spontaneous emission (ASE) threshold have been investigated using the stilbene-based energy donor 4,4'-bis[(N-carbazole)styryl]biphenyl (BSB-Cz) and the coumarin-based energy acceptor 2,3,6,7-tetrahydro-1,1,7,7,-tetramethyl-1H,5H,11H-10-(2-benzothiazolyl)quinolizino[9,9a,1gh]coumarin (C545T). Using the stacked-layer structure of BSB-Cz/C545T/BSB-Cz, we fabricated bowl-shaped microresonators on silica microspheres with a total thickness of 250 nm fixing the thickness of the C545T layer to 1 nm. The ASE threshold depended on the thicknesses of the top and bottom BSB-Cz layers, which affect the magnitude of the energy transfer. To assess the relationship between the ASE threshold and energy transfer, we developed a device parameter to evaluate the magnitude of the energy transfer by formulating the rate equations. We found that ASE easily occurs under the condition that the C545T molecules become unable to accept energy from the BSB-Cz excitons owing to the high exciton density of C545T, and that the ASE threshold decreases with decreasing device parameter. The device parameter is useful for optimizing microresonator structures in multi-component organic WGM resonators that utilize energy transfer.
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Affiliation(s)
- Tomoki Mikajiri
- Graduate School of Science, University of Hyogo, Ako-gun, Hyogo 678-1297, Japan.
| | - Takeshi Komino
- Graduate School of Science, University of Hyogo, Ako-gun, Hyogo 678-1297, Japan.
| | - Jun-Ichi Yamada
- Graduate School of Science, University of Hyogo, Ako-gun, Hyogo 678-1297, Japan.
| | - Hiroyuki Tajima
- Graduate School of Science, University of Hyogo, Ako-gun, Hyogo 678-1297, Japan.
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3
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Qiu LQ, Lv Q, Wang XD. Advances in white light-emitting organic crystals. LUMINESCENCE 2024; 39:e4585. [PMID: 37635303 DOI: 10.1002/bio.4585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 08/22/2023] [Accepted: 08/24/2023] [Indexed: 08/29/2023]
Abstract
In past decades, organic crystals have presented considerable potential in the field of optoelectronics due to their rich tunable physical and chemical properties and excellent optoelectronic characteristics. White-light emission, as a special application, has received widespread attention and has been applied in various fields, generating significant interest in the scientific community. By preparing white light-emitting organic crystals, a series of applications for future white-light sources can be realized. This article reviews the research progress on the molecular design and synthesis, preparation, and application of white light-emitting organic crystals in recent years. We hope that this review will help to understand and facilitate the development of white light-emitting organic crystals.
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Affiliation(s)
- Lin-Qing Qiu
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-based Functional Materials and Devices, Soochow University, Suzhou, Jiangsu, China
| | - Qiang Lv
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-based Functional Materials and Devices, Soochow University, Suzhou, Jiangsu, China
| | - Xue-Dong Wang
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-based Functional Materials and Devices, Soochow University, Suzhou, Jiangsu, China
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4
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Taghipour N, Dalmases M, Whitworth GL, Wang Y, Konstantatos G. Ultrafast Cascade Charge Transfer in Multibandgap Colloidal Quantum Dot Solids Enables Threshold Reduction for Optical Gain and Stimulated Emission. NANO LETTERS 2023; 23:8637-8642. [PMID: 37724790 DOI: 10.1021/acs.nanolett.3c02468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/21/2023]
Abstract
Achieving low-threshold infrared stimulated emission in solution-processed quantum dots is critical to enable real-life applications including photonic integrated circuits (PICs), LIDAR application, and optical telecommunication. However, realization of low threshold infrared gain is fundamentally challenging due to high degeneracy of the first emissive state (e.g., 8-fold) and fast Auger recombination. In this Letter, we demonstrate ultra-low-threshold infrared stimulated emission with an onset of 110 μJ cm-2 employing cascade charge transfer (CT) in Pb-chalcogenide colloidal quantum dot (CQD) solids. In doing so, we investigate this idea in two different architectures including a mixture of multiband gap CQDs and a layer-by-layer (LBL) configuration. Using transient absorption spectroscopy, we show ultrafast cascade CT from large band gap PbS CQD to small band gap PbS/PbSSe core/shell CQDs in LBL (∼2 ps) and mixture (∼9 ps) configurations. These results indicate the feasibility of using cascade CT as an efficient method to reduce the optical gain threshold in CQD solid films.
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Affiliation(s)
- Nima Taghipour
- ICFO, Institut de Ciències Fotòniques, The Barcelona Institute of Science and Technology, Castelldefels, Barcelona, 08860 Spain
| | - Mariona Dalmases
- ICFO, Institut de Ciències Fotòniques, The Barcelona Institute of Science and Technology, Castelldefels, Barcelona, 08860 Spain
| | - Guy Luke Whitworth
- ICFO, Institut de Ciències Fotòniques, The Barcelona Institute of Science and Technology, Castelldefels, Barcelona, 08860 Spain
| | - Yongjie Wang
- ICFO, Institut de Ciències Fotòniques, The Barcelona Institute of Science and Technology, Castelldefels, Barcelona, 08860 Spain
| | - Gerasimos Konstantatos
- ICFO, Institut de Ciències Fotòniques, The Barcelona Institute of Science and Technology, Castelldefels, Barcelona, 08860 Spain
- ICREA, Institució Catalana de Recerca i Estudis Avançats, Barcelona, 08010 Spain
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5
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Stäter S, Wenzel FA, Welz H, Kreger K, Köhler J, Schmidt HW, Hildner R. Directed Gradients in the Excited-State Energy Landscape of Poly(3-hexylthiophene) Nanofibers. J Am Chem Soc 2023. [PMID: 37315116 DOI: 10.1021/jacs.3c02117] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Funneling excitation energy toward lower energy excited states is a key concept in photosynthesis, which is often realized with at most two chemically different types of pigment molecules. However, current synthetic approaches to establish energy funnels, or gradients, typically rely on Förster-type energy-transfer cascades along many chemically different molecules. Here, we demonstrate an elegant concept for a gradient in the excited-state energy landscape along micrometer-long supramolecular nanofibers based on the conjugated polymer poly(3-hexylthiophene), P3HT, as the single component. Precisely aligned P3HT nanofibers within a supramolecular superstructure are prepared by solution processing involving an efficient supramolecular nucleating agent. Employing hyperspectral imaging, we find that the lowest-energy exciton band edge continuously shifts to lower energies along the nanofibers' growth direction. We attribute this directed excited-state energy gradient to defect fractionation during nanofiber growth. Our concept provides guidelines for the design of supramolecular structures with an intrinsic energy gradient for nanophotonic applications.
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Affiliation(s)
- Sebastian Stäter
- Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
- Spectroscopy of Soft Matter, University of Bayreuth, Universitätsstrasse 30, 95440 Bayreuth, Germany
| | - Felix A Wenzel
- Macromolecular Chemistry I and Bavarian Polymer Institute, University of Bayreuth, Universitätsstrasse 30, 95440 Bayreuth, Germany
| | - Hannes Welz
- Macromolecular Chemistry I and Bavarian Polymer Institute, University of Bayreuth, Universitätsstrasse 30, 95440 Bayreuth, Germany
| | - Klaus Kreger
- Macromolecular Chemistry I and Bavarian Polymer Institute, University of Bayreuth, Universitätsstrasse 30, 95440 Bayreuth, Germany
| | - Jürgen Köhler
- Spectroscopy of Soft Matter, University of Bayreuth, Universitätsstrasse 30, 95440 Bayreuth, Germany
- Bavarian Polymer Institute and Bayreuther Institut für Makromolekülforschung (BIMF), University of Bayreuth, 95440 Bayreuth, Germany
| | - Hans-Werner Schmidt
- Macromolecular Chemistry I and Bavarian Polymer Institute, University of Bayreuth, Universitätsstrasse 30, 95440 Bayreuth, Germany
| | - Richard Hildner
- Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
- Spectroscopy of Soft Matter, University of Bayreuth, Universitätsstrasse 30, 95440 Bayreuth, Germany
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6
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He Z, Li F, Zuo P, Tian H. Principles and Applications of Resonance Energy Transfer Involving Noble Metallic Nanoparticles. MATERIALS (BASEL, SWITZERLAND) 2023; 16:3083. [PMID: 37109920 PMCID: PMC10145016 DOI: 10.3390/ma16083083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 04/01/2023] [Accepted: 04/11/2023] [Indexed: 06/19/2023]
Abstract
Over the past several years, resonance energy transfer involving noble metallic nanoparticles has received considerable attention. The aim of this review is to cover advances in resonance energy transfer, widely exploited in biological structures and dynamics. Due to the presence of surface plasmons, strong surface plasmon resonance absorption and local electric field enhancement are generated near noble metallic nanoparticles, and the resulting energy transfer shows potential applications in microlasers, quantum information storage devices and micro-/nanoprocessing. In this review, we present the basic principle of the characteristics of noble metallic nanoparticles, as well as the representative progress in resonance energy transfer involving noble metallic nanoparticles, such as fluorescence resonance energy transfer, nanometal surface energy transfer, plasmon-induced resonance energy transfer, metal-enhanced fluorescence, surface-enhanced Raman scattering and cascade energy transfer. We end this review with an outlook on the development and applications of the transfer process. This will offer theoretical guidance for further optical methods in distance distribution analysis and microscopic detection.
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Affiliation(s)
- Zhicong He
- School of Mechanical and Electrical Engineering, Hubei Key Laboratory of Optical Information and Pattern Recognition, Wuhan Institute of Technology, Wuhan 430073, China
- School of Mechanical and Electrical Engineering, Hubei Polytechnic University, Huangshi 435003, China
- Hubei Key Laboratory of Intelligent Transportation Technology and Device, Hubei Polytechnic University, Huangshi 435003, China
| | - Fang Li
- School of Mechanical and Electrical Engineering, Hubei Key Laboratory of Optical Information and Pattern Recognition, Wuhan Institute of Technology, Wuhan 430073, China
| | - Pei Zuo
- School of Mechanical and Electrical Engineering, Hubei Key Laboratory of Optical Information and Pattern Recognition, Wuhan Institute of Technology, Wuhan 430073, China
| | - Hong Tian
- School of Mechanical and Electrical Engineering, Hubei Key Laboratory of Optical Information and Pattern Recognition, Wuhan Institute of Technology, Wuhan 430073, China
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7
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Wu JJ, Zhuo MP, Lai R, Zou SN, Yan CC, Yuan Y, Yang SY, Wei GQ, Wang XD, Liao LS. Cascaded Excited-State Intramolecular Proton Transfer Towards Near-Infrared Organic Lasers Beyond 850 nm. Angew Chem Int Ed Engl 2021; 60:9114-9119. [PMID: 33538056 DOI: 10.1002/anie.202016786] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 02/03/2021] [Indexed: 01/01/2023]
Abstract
Near-infrared (NIR) organic solid-state lasers play an essential role in applications ranging from laser communication to infrared night vision, but progress in this area is restricted by the lack of effective excited-state gain processes. Herein, we originally proposed and demonstrated the cascaded occurrence of excited-state intramolecular proton transfer for constructing the completely new energy-level systems. Cascading by the first ultrafast proton transfer of <430 fs and the subsequent irreversible second proton transfer of ca. 1.6 ps, the stepwise proton transfer process favors the true six-level photophysical cycle, which supports efficient population inversion and thus NIR single-mode lasing at 854 nm. This work realizes longest wavelength beyond 850 nm of organic single-crystal lasing to date and originally exploits the cascaded excited-state molecular proton transfer energy-level systems for organic solid-state lasers.
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Affiliation(s)
- Jun-Jie Wu
- Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou, Jiangsu, 215123, P. R. China
| | - Ming-Peng Zhuo
- Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou, Jiangsu, 215123, P. R. China
| | - Runchen Lai
- Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou, Jiangsu, 215123, P. R. China.,Dalian Institute of Chemical Physics (DICP), Chinese Academy of Sciences, Dalian, Liaoning, 116000, P. R. China
| | - Sheng-Nan Zou
- Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou, Jiangsu, 215123, P. R. China
| | - Chang-Cun Yan
- Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou, Jiangsu, 215123, P. R. China
| | - Yi Yuan
- Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou, Jiangsu, 215123, P. R. China
| | - Sheng-Yi Yang
- Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou, Jiangsu, 215123, P. R. China
| | - Guo-Qing Wei
- Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou, Jiangsu, 215123, P. R. China
| | - Xue-Dong Wang
- Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou, Jiangsu, 215123, P. R. China
| | - Liang-Sheng Liao
- Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou, Jiangsu, 215123, P. R. China.,Institute of Organic Optoelectronics, JITRI, Wujiang, Suzhou, Jiangsu, 215211, P. R. China
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8
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Wu J, Zhuo M, Lai R, Zou S, Yan C, Yuan Y, Yang S, Wei G, Wang X, Liao L. Cascaded Excited‐State Intramolecular Proton Transfer Towards Near‐Infrared Organic Lasers Beyond 850 nm. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202016786] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Jun‐Jie Wu
- Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices Institute of Functional Nano & Soft Materials (FUNSOM) Soochow University Suzhou Jiangsu 215123 P. R. China
| | - Ming‐Peng Zhuo
- Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices Institute of Functional Nano & Soft Materials (FUNSOM) Soochow University Suzhou Jiangsu 215123 P. R. China
| | - Runchen Lai
- Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices Institute of Functional Nano & Soft Materials (FUNSOM) Soochow University Suzhou Jiangsu 215123 P. R. China
- Dalian Institute of Chemical Physics (DICP) Chinese Academy of Sciences Dalian Liaoning 116000 P. R. China
| | - Sheng‐Nan Zou
- Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices Institute of Functional Nano & Soft Materials (FUNSOM) Soochow University Suzhou Jiangsu 215123 P. R. China
| | - Chang‐Cun Yan
- Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices Institute of Functional Nano & Soft Materials (FUNSOM) Soochow University Suzhou Jiangsu 215123 P. R. China
| | - Yi Yuan
- Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices Institute of Functional Nano & Soft Materials (FUNSOM) Soochow University Suzhou Jiangsu 215123 P. R. China
| | - Sheng‐Yi Yang
- Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices Institute of Functional Nano & Soft Materials (FUNSOM) Soochow University Suzhou Jiangsu 215123 P. R. China
| | - Guo‐Qing Wei
- Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices Institute of Functional Nano & Soft Materials (FUNSOM) Soochow University Suzhou Jiangsu 215123 P. R. China
| | - Xue‐Dong Wang
- Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices Institute of Functional Nano & Soft Materials (FUNSOM) Soochow University Suzhou Jiangsu 215123 P. R. China
| | - Liang‐Sheng Liao
- Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices Institute of Functional Nano & Soft Materials (FUNSOM) Soochow University Suzhou Jiangsu 215123 P. R. China
- Institute of Organic Optoelectronics JITRI, Wujiang Suzhou Jiangsu 215211 P. R. China
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9
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Lau JA, Chen L, Choudhury A, Schwarzer D, Verma VB, Wodtke AM. Transporting and concentrating vibrational energy to promote isomerization. Nature 2021; 589:391-395. [PMID: 33432240 DOI: 10.1038/s41586-020-03081-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Accepted: 11/02/2020] [Indexed: 11/09/2022]
Abstract
Visible-light absorption and transport of the resultant electronic excitations to a reaction centre through Förster resonance energy transfer1-3 (FRET) are critical to the operation of biological light-harvesting systems4, and are used in various artificial systems made of synthetic dyes5, polymers6 or nanodots7,8. The fundamental equations describing FRET are similar to those describing vibration-to-vibration (V-V) energy transfer9, and suggest that transport and localization of vibrational energy should, in principle, also be possible. Although it is known that vibrational excitation can promote reactions10-16, transporting and concentrating vibrational energy has not yet been reported. We have recently demonstrated orientational isomerization enabled by vibrational energy pooling in a CO adsorbate layer on a NaCl(100) surface17. Here we build on that work to show that the isomerization reaction proceeds more efficiently with a thick 12C16O overlayer that absorbs more mid-infrared photons and transports the resultant vibrational excitations by V-V energy transfer to a 13C18O-NaCl interface. The vibrational energy density achieved at the interface is 30 times higher than that obtained with direct excitation of the interfacial CO. We anticipate that with careful system design, these concepts could be used to drive other chemical transformations, providing new approaches to condensed phase chemistry.
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Affiliation(s)
- Jascha A Lau
- Institute for Physical Chemistry, University of Goettingen, Goettingen, Germany.,Department of Dynamics at Surfaces, Max Planck Institute for Biophysical Chemistry, Goettingen, Germany
| | - Li Chen
- Department of Dynamics at Surfaces, Max Planck Institute for Biophysical Chemistry, Goettingen, Germany.,State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, People's Republic of China
| | - Arnab Choudhury
- Institute for Physical Chemistry, University of Goettingen, Goettingen, Germany.,Department of Dynamics at Surfaces, Max Planck Institute for Biophysical Chemistry, Goettingen, Germany
| | - Dirk Schwarzer
- Department of Dynamics at Surfaces, Max Planck Institute for Biophysical Chemistry, Goettingen, Germany
| | - Varun B Verma
- National Institute of Standards and Technology, Boulder, CO, USA
| | - Alec M Wodtke
- Institute for Physical Chemistry, University of Goettingen, Goettingen, Germany. .,Department of Dynamics at Surfaces, Max Planck Institute for Biophysical Chemistry, Goettingen, Germany. .,International Center for Advanced Studies of Energy Conversion, University of Goettingen, Goettingen, Germany.
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10
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Chen L, Zhao C, Liu L, Xu L. Single mode operation and ultrawide tuning of on-chip optofluidic dye lasers. LAB ON A CHIP 2020; 20:3757-3762. [PMID: 32901652 DOI: 10.1039/d0lc00742k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Single transverse mode lasers that can be continuously tuned over ultrawide wavelength ranges with a narrow linewidth are very important components for lab-on-a-chip systems. Such lasers that can be tuned over the whole visible spectrum or even beyond have not been demonstrated hitherto regardless of many years of research in this area. This article presents an on-chip optofluidic distributed Bragg reflector (DBR) dye laser constituted by a combination of a T-shaped optofluidic waveguide (T waveguide) and two ridge-waveguide-based fluidic DBR gratings, in which the T waveguide provides gain for lasing and the DBR gratings select the lasing wavelength. This configuration guarantees that the fundamental mode has a much lower loss (consequently much lower lasing threshold) than all the higher order modes. By fabricating PDMS devices of such structure and changing the fluid in DBR gratings as well as the gain fluid in the T waveguide, we demonstrate a single mode optofluidic dye laser that can be continuously tuned over a wavelength range of more than 450 nm with a linewidth less than 0.1 nm. Mode patterns obtained when using different laser dyes in the T waveguide verify fundamental mode operation over the wide wavelength range.
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Affiliation(s)
- Lin Chen
- Key Lab for Micro and Nanophotonic Structures (Ministry of Education, China), Department of Optical Science and Engineering, School of Information Science and Engineering, Fudan University, Shanghai 200433, China.
| | - Chenming Zhao
- Key Lab for Micro and Nanophotonic Structures (Ministry of Education, China), Department of Optical Science and Engineering, School of Information Science and Engineering, Fudan University, Shanghai 200433, China.
| | - Liying Liu
- Key Lab for Micro and Nanophotonic Structures (Ministry of Education, China), Department of Optical Science and Engineering, School of Information Science and Engineering, Fudan University, Shanghai 200433, China.
| | - Lei Xu
- Key Lab for Micro and Nanophotonic Structures (Ministry of Education, China), Department of Optical Science and Engineering, School of Information Science and Engineering, Fudan University, Shanghai 200433, China. and Department of Physics, Fudan University, Shanghai 200433, China
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11
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Zhao J, Yan Y, Gao Z, Du Y, Dong H, Yao J, Zhao YS. Full-color laser displays based on organic printed microlaser arrays. Nat Commun 2019; 10:870. [PMID: 30787345 PMCID: PMC6382787 DOI: 10.1038/s41467-019-08834-6] [Citation(s) in RCA: 73] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Accepted: 02/04/2019] [Indexed: 11/12/2022] Open
Abstract
Laser displays, which exploit characteristic advantages of lasers, represent a promising next-generation display technology based on the ultimate visual experience they provide. However, the inability to obtain pixelated laser arrays as self-emissive full-color panels hinders the application of laser displays in the flat-panel sector. Due to their excellent optoelectronic properties and processability, organic materials have great potential for the production of periodically patterned multi-color microlaser arrays. Here, we demonstrate for the first time full-color laser displays on precisely patterned organic red-green-blue (RGB) microlaser matrices through inkjet printing. Individual RGB laser pixels are realized by doping respective luminescent dyes into the ink materials, resulting in a wide achievable color gamut 45% larger than the standard RGB space. Using as-prepared microlaser arrays as full-color panels, we achieve dynamic laser displays for video playing through consecutive beam scanning. These results represent a major step towards full-color laser displays with outstanding color expression. In the next generation of display technology for portable devices, lasers could replace LEDs to achieve more vibrant colours. Here, Zhao et al. demonstrate a dynamic full-color display in which each pixel is made up of three printed organic microlasers to cover the RGB space.
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Affiliation(s)
- Jinyang Zhao
- Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, 100190, Beijing, China.,University of Chinese Academy of Sciences, 100049, Beijing, China
| | - Yongli Yan
- Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, 100190, Beijing, China.
| | - Zhenhua Gao
- Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, 100190, Beijing, China.,University of Chinese Academy of Sciences, 100049, Beijing, China
| | - Yuxiang Du
- Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, 100190, Beijing, China.,University of Chinese Academy of Sciences, 100049, Beijing, China
| | - Haiyun Dong
- Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, 100190, Beijing, China
| | - Jiannian Yao
- Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, 100190, Beijing, China.,University of Chinese Academy of Sciences, 100049, Beijing, China
| | - Yong Sheng Zhao
- Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, 100190, Beijing, China. .,University of Chinese Academy of Sciences, 100049, Beijing, China.
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12
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Hoinka NM, Fuhrmann-Lieker T. Amplified Spontaneous Emission in Paper. Sci Rep 2019; 9:1862. [PMID: 30755646 PMCID: PMC6372576 DOI: 10.1038/s41598-018-38438-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Accepted: 12/27/2018] [Indexed: 11/09/2022] Open
Abstract
Industrially produced copy paper is presented as a novel optical material for narrow-band stimulated emission. Fluorescent brightening agents (FBA) such as Calcofluor White provide enough gain to exceed the threshold for amplified spontaneous emission. By applying an additional dye such as Coumarin 307, or simply a highlighter pen, the emission line can be shifted from blue (~440 nm), towards turquoise (>480 nm), up to orange (590 nm) which can be useful for spectroscopic applications. These properties are demonstrated in two papers, a commercial copy paper and a FBA-stained calligraphy paper.
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Affiliation(s)
- N M Hoinka
- Macromolecular Chemistry and Molecular Materials, Institute of Chemistry and Center for Interdisciplinary Nanostructure Science and Technology, University of Kassel, Heinrich-Plett Str. 40, 34132, Kassel, Germany
| | - T Fuhrmann-Lieker
- Macromolecular Chemistry and Molecular Materials, Institute of Chemistry and Center for Interdisciplinary Nanostructure Science and Technology, University of Kassel, Heinrich-Plett Str. 40, 34132, Kassel, Germany.
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13
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Higase Y, Morita S, Fujii T, Takahashi S, Yamashita K, Sasaki F. High-gain and wide-band optical amplifications induced by a coupled excited state of organic dye molecules co-doped in polymer waveguide. OPTICS LETTERS 2018; 43:1714-1717. [PMID: 29652347 DOI: 10.1364/ol.43.001714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Accepted: 03/09/2018] [Indexed: 06/08/2023]
Abstract
We investigated optical gain and lasing characteristics of a polymer thin film co-doped with Rhodamine 6G and 4-(Dicyanomethylene)-2-methyl-6-(4-dimethylaminostyryl)-4H-pyran dye molecules. By the co-doping of these dyes, the optical gain coefficient and its spectral range were enhanced and widened, respectively. These results cannot be accounted for by the linear combination of the optical gain properties of single-doped films. Owing to this high-gain and wide-band optical amplification property, a distributed feedback lasing with a low threshold of 70 μJ/cm2 as well as a widely tunable wavelength range of 587-613 nm was achieved. We attribute this amplification property of the co-doped film, which cannot be achieved with the single-doped films, to the appearance of a coupled excited state between the two molecules.
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14
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Singh K, Joshi G, Gairola R. Influence of donor–donor transport on excitation energy transfer in binary system C102-C6 doped in Poly (methylmethacrylate). Radiat Phys Chem Oxf Engl 1993 2018. [DOI: 10.1016/j.radphyschem.2017.07.026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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15
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Talik NA, Kar YB, Tukijan SNM, Wong CL. Review on recent Developments on Fabrication Techniques of Distributed Feedback (DFB) Based Organic Lasers. ACTA ACUST UNITED AC 2017. [DOI: 10.1088/1742-6596/914/1/012032] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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16
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Nechayev S, Rotschild C. Detailed Balance Limit of Efficiency of Broadband-Pumped Lasers. Sci Rep 2017; 7:11497. [PMID: 28904362 PMCID: PMC5597643 DOI: 10.1038/s41598-017-11857-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Accepted: 08/30/2017] [Indexed: 11/26/2022] Open
Abstract
Broadband light sources are a wide class of pumping schemes for lasers including LEDs, sunlight and flash lamps. Recently, efficient coupling of broadband light to high-quality micro-cavities has been demonstrated for on-chip applications and low-threshold solar-pumped lasers via cascade energy transfer. However, the conversion of incoherent to coherent light comes with an inherent price of reduced efficiency, which has yet to be assessed. In this paper, we derive the detailed balance limit of efficiency of broadband-pumped lasers and discuss how it is affected by the need to maintain a threshold population inversion and thermodynamically dictated minimal Stokes' shift. We show that lasers' slope efficiency is analogous to the nominal efficiency of solar cells, limited by thermalisation losses and additional unavoidable Stokes' shift. The lasers' power efficiency is analogous to the detailed balance limit of efficiency of solar cells, affected by the cavity mirrors and impedance matching factor, respectively. As an example we analyze the specific case of solar-pumped sensitized Nd3+:YAG-like lasers and define the conditions to reach their thermodynamic limit of efficiency. Our work establishes an upper theoretical limit for the efficiency of broadband-pumped lasers. Our general, yet flexible model also provides a way to incorporate other optical and thermodynamic losses and, hence, to estimate the efficiency of non-ideal broadband-pumped lasers.
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Affiliation(s)
- Sergey Nechayev
- Department of Mechanical Engineering and Russell Berrie Nanotechnology Institute, Technion-Israel Institute of Technology, Haifa, 32000, Israel
| | - Carmel Rotschild
- Department of Mechanical Engineering and Russell Berrie Nanotechnology Institute, Technion-Israel Institute of Technology, Haifa, 32000, Israel.
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17
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Gao Z, Wei C, Yan Y, Zhang W, Dong H, Zhao J, Yi J, Zhang C, Li YJ, Zhao YS. Covert Photonic Barcodes Based on Light Controlled Acidichromism in Organic Dye Doped Whispering-Gallery-Mode Microdisks. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1701558. [PMID: 28605074 DOI: 10.1002/adma.201701558] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Indexed: 06/07/2023]
Abstract
Photonic barcodes with a small footprint have demonstrated a great value for multiplexed high-throughput bioassays and tracking systems. Attempts to develop coding technology tend to focus on the generation of featured barcodes both with high coding capacity and accurate recognition. In this work, a strategy to design photonic barcodes is proposed based on whispering-gallery-mode (WGM) modulations in dye-doped microdisk resonant cavities, where each modulated photoluminescence spectrum constitutes the fingerprint of a corresponding microdisk. The WGM-based barcodes can achieve infinite encoding capacity through tuning the dimensions of the microdisks. These photonic barcodes can be well disguised and decoded based on the light controlled proton release and acidichromism of the organic materials, which are essential to fulfill the functions of anti-counterfeiting, information security, and so on. The results will pave an avenue to new types of flexible WGM-based components for optical data recording and security labels.
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Affiliation(s)
- Zhenhua Gao
- Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Cong Wei
- Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yongli Yan
- Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Wei Zhang
- Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Haiyun Dong
- Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Jinyang Zhao
- Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Jun Yi
- Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Chunhuan Zhang
- Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yong Jun Li
- Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yong Sheng Zhao
- Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
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18
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Goudappagouda G, Wakchaure VC, Ranjeesh KC, Abhai CAR, Babu SS. Cascade energy transfer and tunable emission from nanosheet hybrids: locating acceptor molecules through chiral doping. Chem Commun (Camb) 2017. [DOI: 10.1039/c7cc02994b] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A donor–acceptor–donor triad with excellent intramolecular energy transfer (99%) exhibits cascade energy transfer in the presence of second acceptors leading to tunable emission colours. Chiral acceptor doping enables chiral induction and to locate acceptors in the donor scaffold.
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Affiliation(s)
- Goudappagouda Goudappagouda
- Organic Chemistry Division
- National Chemical Laboratory (CSIR-NCL)
- Pune-411008
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | - Vivek Chandrakant Wakchaure
- Organic Chemistry Division
- National Chemical Laboratory (CSIR-NCL)
- Pune-411008
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | - Kayaramkodath Chandran Ranjeesh
- Organic Chemistry Division
- National Chemical Laboratory (CSIR-NCL)
- Pune-411008
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | | | - Sukumaran Santhosh Babu
- Organic Chemistry Division
- National Chemical Laboratory (CSIR-NCL)
- Pune-411008
- India
- Academy of Scientific and Innovative Research (AcSIR)
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19
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Designing a Broadband Pump for High-Quality Micro-Lasers via Modified Net Radiation Method. Sci Rep 2016; 6:38576. [PMID: 27924844 PMCID: PMC5141496 DOI: 10.1038/srep38576] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Accepted: 11/09/2016] [Indexed: 11/09/2022] Open
Abstract
High-quality micro-lasers are key ingredients in non-linear optics, communication, sensing and low-threshold solar-pumped lasers. However, such micro-lasers exhibit negligible absorption of free-space broadband pump light. Recently, this limitation was lifted by cascade energy transfer, in which the absorption and quality factor are modulated with wavelength, enabling non-resonant pumping of high-quality micro-lasers and solar-pumped laser to operate at record low solar concentration. Here, we present a generic theoretical framework for modeling the absorption, emission and energy transfer of incoherent radiation between cascade sensitizer and laser gain media. Our model is based on linear equations of the modified net radiation method and is therefore robust, fast converging and has low complexity. We apply this formalism to compute the optimal parameters of low-threshold solar-pumped lasers. It is revealed that the interplay between the absorption and self-absorption of such lasers defines the optimal pump absorption below the maximal value, which is in contrast to conventional lasers for which full pump absorption is desired. Numerical results are compared to experimental data on a sensitized Nd3+:YAG cavity, and quantitative agreement with theoretical models is found. Our work modularizes the gain and sensitizing components and paves the way for the optimal design of broadband-pumped high-quality micro-lasers and efficient solar-pumped lasers.
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20
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Yuan M, Quan LN, Comin R, Walters G, Sabatini R, Voznyy O, Hoogland S, Zhao Y, Beauregard EM, Kanjanaboos P, Lu Z, Kim DH, Sargent EH. Perovskite energy funnels for efficient light-emitting diodes. NATURE NANOTECHNOLOGY 2016; 11:872-877. [PMID: 27347835 DOI: 10.1038/nnano.2016.110] [Citation(s) in RCA: 888] [Impact Index Per Article: 111.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Accepted: 05/20/2016] [Indexed: 05/20/2023]
Abstract
Organometal halide perovskites exhibit large bulk crystal domain sizes, rare traps, excellent mobilities and carriers that are free at room temperature-properties that support their excellent performance in charge-separating devices. In devices that rely on the forward injection of electrons and holes, such as light-emitting diodes (LEDs), excellent mobilities contribute to the efficient capture of non-equilibrium charge carriers by rare non-radiative centres. Moreover, the lack of bound excitons weakens the competition of desired radiative (over undesired non-radiative) recombination. Here we report a perovskite mixed material comprising a series of differently quantum-size-tuned grains that funnels photoexcitations to the lowest-bandgap light-emitter in the mixture. The materials function as charge carrier concentrators, ensuring that radiative recombination successfully outcompetes trapping and hence non-radiative recombination. We use the new material to build devices that exhibit an external quantum efficiency (EQE) of 8.8% and a radiance of 80 W sr-1 m-2. These represent the brightest and most efficient solution-processed near-infrared LEDs to date.
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Affiliation(s)
- Mingjian Yuan
- Department of Electrical and Computer Engineering, University of Toronto, 35 St George Street, Toronto, Ontario M5S 1A4, Canada
| | - Li Na Quan
- Department of Electrical and Computer Engineering, University of Toronto, 35 St George Street, Toronto, Ontario M5S 1A4, Canada
- Department of Chemistry and Nano Science, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Korea
| | - Riccardo Comin
- Department of Electrical and Computer Engineering, University of Toronto, 35 St George Street, Toronto, Ontario M5S 1A4, Canada
| | - Grant Walters
- Department of Electrical and Computer Engineering, University of Toronto, 35 St George Street, Toronto, Ontario M5S 1A4, Canada
| | - Randy Sabatini
- Department of Electrical and Computer Engineering, University of Toronto, 35 St George Street, Toronto, Ontario M5S 1A4, Canada
| | - Oleksandr Voznyy
- Department of Electrical and Computer Engineering, University of Toronto, 35 St George Street, Toronto, Ontario M5S 1A4, Canada
| | - Sjoerd Hoogland
- Department of Electrical and Computer Engineering, University of Toronto, 35 St George Street, Toronto, Ontario M5S 1A4, Canada
| | - Yongbiao Zhao
- Department of Electrical and Computer Engineering, University of Toronto, 35 St George Street, Toronto, Ontario M5S 1A4, Canada
- Department of Materials Science and Engineering, University of Toronto, 184 College Street, Toronto, Ontario M5S 3E4, Canada
| | - Eric M Beauregard
- Department of Electrical and Computer Engineering, University of Toronto, 35 St George Street, Toronto, Ontario M5S 1A4, Canada
| | - Pongsakorn Kanjanaboos
- Department of Electrical and Computer Engineering, University of Toronto, 35 St George Street, Toronto, Ontario M5S 1A4, Canada
| | - Zhenghong Lu
- Department of Materials Science and Engineering, University of Toronto, 184 College Street, Toronto, Ontario M5S 3E4, Canada
| | - Dong Ha Kim
- Department of Chemistry and Nano Science, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Korea
| | - Edward H Sargent
- Department of Electrical and Computer Engineering, University of Toronto, 35 St George Street, Toronto, Ontario M5S 1A4, Canada
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21
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Gao MX, Zou HY, Gao PF, Liu Y, Li N, Li YF, Huang CZ. Insight into a reversible energy transfer system. NANOSCALE 2016; 8:16236-16242. [PMID: 27714032 DOI: 10.1039/c6nr03262a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Resonance energy transfer (RET) processes have wide applications; these processes involve a unidirectional energy transfer from a particular donor to a particular acceptor. Here, we report a plasmonic resonance energy transfer (PRET), which occurs from the surface of gold nanoparticles to fluorescent organic dyes, and coexists with a nanometal surface energy transfer (NSET) that operates in the reverse direction. The coexistence of both PRET and NSET in opposite directions means that the roles of both donor and acceptor can be interchanged, which could be identified by using spectrofluorometric measurements and light scattering dark field microscopic imaging. The experimental data could be further theoretically supported using Persson and Lang's model, the quasi-static approximation and finite-difference time-domain simulation. Moreover, disruption of the PRET process by altering the energy transfer pairs suggests that interactions occur inside the reversible energy transfer system, which manifest by increasing the fluorescence quenching efficiency of the NSET process.
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Affiliation(s)
- Ming Xuan Gao
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China.
| | - Hong Yan Zou
- College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China
| | - Peng Fei Gao
- College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China
| | - Yue Liu
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China.
| | - Na Li
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, Institute of Analytical Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China.
| | - Yuan Fang Li
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China.
| | - Cheng Zhi Huang
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China. and College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China
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22
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Harkin DJ, Broch K, Schreck M, Ceymann H, Stoy A, Yong CK, Nikolka M, McCulloch I, Stingelin N, Lambert C, Sirringhaus H. Decoupling Charge Transport and Electroluminescence in a High Mobility Polymer Semiconductor. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2016; 28:6378-6385. [PMID: 27166597 DOI: 10.1002/adma.201600851] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2016] [Revised: 03/17/2016] [Indexed: 06/05/2023]
Abstract
Fluorescence enhancement of a high-mobility polymer semiconductor is achieved via energy transfer to a higher fluorescence quantum yield squaraine dye molecule on 50 ps timescales. In organic light-emitting diodes, an order of magnitude enhancement of the external quantum efficiency is observed without reduction in the charge-carrier mobility resulting in radiances of up to 5 W str(-1) m(-2) at 800 nm.
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Affiliation(s)
- David J Harkin
- Department of Physics, University of Cambridge, Cambridge, CB3 0HE, UK
| | - Katharina Broch
- Department of Physics, University of Cambridge, Cambridge, CB3 0HE, UK
| | - Maximilian Schreck
- Institut für Organische Chemie, Universität Würzburg, 97074, Würzburg, Germany
| | - Harald Ceymann
- Institut für Organische Chemie, Universität Würzburg, 97074, Würzburg, Germany
| | - Andreas Stoy
- Institut für Organische Chemie, Universität Würzburg, 97074, Würzburg, Germany
| | - Chaw-Keong Yong
- Department of Physics, University of Cambridge, Cambridge, CB3 0HE, UK
| | - Mark Nikolka
- Department of Physics, University of Cambridge, Cambridge, CB3 0HE, UK
| | - Iain McCulloch
- Department of Chemistry, Imperial College London, London, SW7 2AZ, UK
| | - Natalie Stingelin
- Department of Materials, Imperial College London, London, SW7 2AZ, UK
| | - Christoph Lambert
- Institut für Organische Chemie, Universität Würzburg, 97074, Würzburg, Germany
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23
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Ziegler J, Wörister C, Vidal C, Hrelescu C, Klar TA. Plasmonic Nanostars as Efficient Broadband Scatterers for Random Lasing. ACS PHOTONICS 2016; 3:919-923. [PMID: 27347494 PMCID: PMC4915225 DOI: 10.1021/acsphotonics.6b00111] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Indexed: 05/23/2023]
Abstract
Huge spectral coverage of random lasing throughout the visible up to the infrared range is achieved with star-shaped gold nanoparticles ("nanostars"). As intrinsically broadband scattering centers, the nanostars are suspended in solutions of various laser dyes, forming randomly arranged resonators which support coherent laser modes. The narrow emission line widths of 0.13 nm or below suggest that gold nanostars provide an efficient coherent feedback for random lasers over an extensive range of wavelengths, all together spanning almost a full optical octave from yellow to infrared.
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24
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Yoon KW, Ha NY. Electrically tunable liquid crystal laser using a nanoimprinted indium-tin-oxide electrode as a distributed feedback resonator. OPTICS EXPRESS 2016; 24:516-521. [PMID: 26832281 DOI: 10.1364/oe.24.000516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We demonstrated electrical tunability of a liquid crystal (LC) laser using a nanoimprinted indium-tin-oxide (ITO) film as a distributed feedback (DFB) resonator, a transparent electrode, and an alignment layer for LCs. From the field-induced reorientation of LCs and changes in effective refractive indices of guided laser modes, lasing emission is tuned by 6 nm at low applied voltage of 8.0 V. This is because the LC laser with the nanoimprinted ITO electrode has no additional insulating layers for lasing performance. The present system is based on the functional electrode and its active control provides various applications and advances in laser technology.
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25
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Wang Z, Shi X, Yu R, Wei S, Chang Q, Wang Y, Liu D, Wang ZL. Single-excitation dual-color coherent lasing by tuning resonance energy transfer processes in porous structured nanowires. NANOSCALE 2015; 7:15091-15098. [PMID: 26349545 DOI: 10.1039/c5nr03349g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Single-excitation dual-color coherent lasing was achieved in a mixed random system of a binary dye and the suspension of gold-silver porous nanowires with plenty of nanogaps. This greatly enhanced the local electromagnetic field in the visible range and guaranteed a low threshold and high Q factor (>10 000) operator for simultaneous dual-color lasing. By tuning the resonance energy transfer process in the stimulated emission, triple output modes (single chartreuse lasing, chartreuse and red dual-color lasing, and single red coherent lasing) were easily obtained. This triple-mode coherent random lasing introduces a new approach to designing multi-functional micro-optoelectronic devices for multi-color speckle-free imaging and interference.
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Affiliation(s)
- Zhaona Wang
- Applied Optics Beijing Area Major Laboratory, Department of Physics, Beijing Normal University, Beijing, China100875.
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26
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Rowland CE, Fedin I, Zhang H, Gray SK, Govorov AO, Talapin DV, Schaller RD. Picosecond energy transfer and multiexciton transfer outpaces Auger recombination in binary CdSe nanoplatelet solids. NATURE MATERIALS 2015; 14:484-9. [PMID: 25774956 DOI: 10.1038/nmat4231] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2014] [Accepted: 01/29/2015] [Indexed: 05/06/2023]
Abstract
Fluorescence resonance energy transfer (FRET) enables photosynthetic light harvesting, wavelength downconversion in light-emitting diodes (LEDs), and optical biosensing schemes. The rate and efficiency of this donor to acceptor transfer of excitation between chromophores dictates the utility of FRET and can unlock new device operation motifs including quantum-funnel solar cells, non-contact chromophore pumping from a proximal LED, and markedly reduced gain thresholds. However, the fastest reported FRET time constants involving spherical quantum dots (0.12-1 ns; refs 7-9) do not outpace biexciton Auger recombination (0.01-0.1 ns; ref. 10), which impedes multiexciton-driven applications including electrically pumped lasers and carrier-multiplication-enhanced photovoltaics. Few-monolayer-thick semiconductor nanoplatelets (NPLs) with tens-of-nanometre lateral dimensions exhibit intense optical transitions and hundreds-of-picosecond Auger recombination, but heretofore lack FRET characterizations. We examine binary CdSe NPL solids and show that interplate FRET (∼6-23 ps, presumably for co-facial arrangements) can occur 15-50 times faster than Auger recombination and demonstrate multiexcitonic FRET, making such materials ideal candidates for advanced technologies.
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Affiliation(s)
- Clare E Rowland
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, USA
| | - Igor Fedin
- Department of Chemistry and James Franck Institute, University of Chicago, Chicago, Illinois 60637, USA
| | - Hui Zhang
- Department of Physics and Astronomy, Ohio University, Athens, Ohio 45701, USA
| | - Stephen K Gray
- Center for Nanoscale Materials, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - Alexander O Govorov
- Department of Physics and Astronomy, Ohio University, Athens, Ohio 45701, USA
| | - Dmitri V Talapin
- 1] Department of Chemistry and James Franck Institute, University of Chicago, Chicago, Illinois 60637, USA [2] Center for Nanoscale Materials, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - Richard D Schaller
- 1] Department of Chemistry, Northwestern University, Evanston, Illinois 60208, USA [2] Center for Nanoscale Materials, Argonne National Laboratory, Argonne, Illinois 60439, USA
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27
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Menke SM, Mullenbach TK, Holmes RJ. Directing energy transport in organic photovoltaic cells using interfacial exciton gates. ACS NANO 2015; 9:4543-4552. [PMID: 25798712 DOI: 10.1021/acsnano.5b01160] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Exciton transport in organic semiconductors is a critical, mediating process in many optoelectronic devices. Often, the diffusive and subdiffusive nature of excitons in these systems can limit device performance, motivating the development of strategies to direct exciton transport. In this work, directed exciton transport is achieved with the incorporation of exciton permeable interfaces. These interfaces introduce a symmetry-breaking imbalance in exciton energy transfer, leading to directed motion. Despite their obvious utility for enhanced exciton harvesting in organic photovoltaic cells (OPVs), the emergent properties of these interfaces are as yet uncharacterized. Here, directed exciton transport is conclusively demonstrated in both dilute donor and energy-cascade OPVs where judicious optimization of the interface allows exciton transport to the donor-acceptor heterojunction to occur considerably faster than when relying on simple diffusion. Generalized systems incorporating multiple exciton permeable interfaces are also explored, demonstrating the ability to further harness this phenomenon and expeditiously direct exciton motion, overcoming the diffusive limit.
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Affiliation(s)
- S Matthew Menke
- Department of Chemical Engineering and Materials Science University of Minnesota 421 Washington Avenue Southeast, 151 Amundson Hall, Minneapolis, Minnesota 55455, United States
| | - Tyler K Mullenbach
- Department of Chemical Engineering and Materials Science University of Minnesota 421 Washington Avenue Southeast, 151 Amundson Hall, Minneapolis, Minnesota 55455, United States
| | - Russell J Holmes
- Department of Chemical Engineering and Materials Science University of Minnesota 421 Washington Avenue Southeast, 151 Amundson Hall, Minneapolis, Minnesota 55455, United States
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28
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Gu C, Huang N, Xu F, Gao J, Jiang D. Cascade exciton-pumping engines with manipulated speed and efficiency in light-harvesting porous π-network films. Sci Rep 2015; 5:8867. [PMID: 25746459 PMCID: PMC5390074 DOI: 10.1038/srep08867] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2014] [Accepted: 02/06/2015] [Indexed: 11/09/2022] Open
Abstract
Light-harvesting antennae are the machinery for exciton pumping in natural photosynthesis, whereas cascade energy transfer through chlorophyll is key to long-distance, efficient energy transduction. Numerous artificial antennae have been developed. However, they are limited in their cascade energy-transfer abilities because of a lack of control over complex chromophore aggregation processes, which has impeded their advancement. Here we report a viable approach for addressing this issue by using a light-harvesting porous polymer film in which a three-dimensional π-network serves as the antenna and micropores segregate multiple dyes to prevent aggregation. Cascade energy-transfer engines are integrated into the films; the rate and efficiency of the energy-funneling engines are precisely manipulated by tailoring the dye components and contents. The nanofilms allow accurate and versatile luminescence engineering, resulting in the production of thirty emission hues, including blue, green, red and white. This advance may open new pathways for realising photosynthesis and photoenergy conversion.
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Affiliation(s)
- Cheng Gu
- Department of Materials Molecular Science, Institute for Molecular Science, National Institutes of Natural Sciences, 5-1 Higashiyama, Myodaiji, Okazaki 444-8787, Japan
| | - Ning Huang
- Department of Materials Molecular Science, Institute for Molecular Science, National Institutes of Natural Sciences, 5-1 Higashiyama, Myodaiji, Okazaki 444-8787, Japan
| | - Fei Xu
- Department of Materials Molecular Science, Institute for Molecular Science, National Institutes of Natural Sciences, 5-1 Higashiyama, Myodaiji, Okazaki 444-8787, Japan
| | - Jia Gao
- Department of Materials Molecular Science, Institute for Molecular Science, National Institutes of Natural Sciences, 5-1 Higashiyama, Myodaiji, Okazaki 444-8787, Japan
| | - Donglin Jiang
- Department of Materials Molecular Science, Institute for Molecular Science, National Institutes of Natural Sciences, 5-1 Higashiyama, Myodaiji, Okazaki 444-8787, Japan
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Li J, Lin J, Huang Y, Xu X, Liu Z, Xue Y, Ding X, Luo H, Jin P, Zhang J, Zou J, Tang C. Organic fluorescent dyes supported on activated boron nitride: a promising blue light excited phosphors for high-performance white light-emitting diodes. Sci Rep 2015; 5:8492. [PMID: 25682730 PMCID: PMC4329563 DOI: 10.1038/srep08492] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2014] [Accepted: 01/19/2015] [Indexed: 11/23/2022] Open
Abstract
We report an effective and rare-earth free light conversion material synthesized via a facile fabrication route, in which organic fluorescent dyes, i.e. Rhodamine B (RhB) and fluorescein isothiocyanate (FITC) are embedded into activated boron nitride (αBN) to form a composite phosphor. The composite phosphor shows highly efficient Förster resonance energy transfer and greatly improved thermal stability, and can emit at broad visible wavelengths of 500–650 nm under the 466 nm blue-light excitation. By packaging of the composite phosphors and a blue light-emitting diode (LED) chip with transparent epoxy resin, white LED with excellent thermal conductivity, current stability and optical performance can be realized, i.e. a thermal conductivity of 0.36 W/mk, a Commission Internationale de 1'Eclairage color coordinates of (0.32, 0.34), and a luminous efficiency of 21.6 lm·W−1. Our research opens the door toward to the practical long-life organic fluorescent dyes-based white LEDs.
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Affiliation(s)
- Jie Li
- 1] School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300130, P.R. China [2] Hebei Key Laboratory of Boron Nitride Micro and Nano Materials, Tianjin 300130, P.R. China
| | - Jing Lin
- 1] School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300130, P.R. China [2] Hebei Key Laboratory of Boron Nitride Micro and Nano Materials, Tianjin 300130, P.R. China [3] Materials Engineering, The University of Queensland, St Lucia, QLD 4072, Australia
| | - Yang Huang
- 1] School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300130, P.R. China [2] Hebei Key Laboratory of Boron Nitride Micro and Nano Materials, Tianjin 300130, P.R. China
| | - Xuewen Xu
- 1] School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300130, P.R. China [2] Hebei Key Laboratory of Boron Nitride Micro and Nano Materials, Tianjin 300130, P.R. China
| | - Zhenya Liu
- 1] School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300130, P.R. China [2] Hebei Key Laboratory of Boron Nitride Micro and Nano Materials, Tianjin 300130, P.R. China
| | - Yanming Xue
- 1] School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300130, P.R. China [2] Hebei Key Laboratory of Boron Nitride Micro and Nano Materials, Tianjin 300130, P.R. China
| | - Xiaoxia Ding
- Department of Physics, Central China Normal University, Wuhan, 430079, P. R. China
| | - Han Luo
- 1] School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300130, P.R. China [2] Hebei Key Laboratory of Boron Nitride Micro and Nano Materials, Tianjin 300130, P.R. China
| | - Peng Jin
- 1] School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300130, P.R. China [2] Hebei Key Laboratory of Boron Nitride Micro and Nano Materials, Tianjin 300130, P.R. China
| | - Jun Zhang
- 1] School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300130, P.R. China [2] Hebei Key Laboratory of Boron Nitride Micro and Nano Materials, Tianjin 300130, P.R. China
| | - Jin Zou
- 1] Materials Engineering, The University of Queensland, St Lucia, QLD 4072, Australia [2] Centre for Microscopy and Microanalysis, The University of Queensland, St Lucia, QLD 4072, Australia
| | - Chengchun Tang
- 1] School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300130, P.R. China [2] Hebei Key Laboratory of Boron Nitride Micro and Nano Materials, Tianjin 300130, P.R. China
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Hwang LC, Wei T, Hsia YL, Li CM, Tu PL, Wen TC. Photoluminescence of I-VII Semiconductor Compounds. Sensitized Luminescence from “Deep States” Recombination in CuBr/AgBr Nanocrystals. J CHIN CHEM SOC-TAIP 2013. [DOI: 10.1002/jccs.200600165] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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31
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Choi EY, Mager L, Cham TT, Dorkenoo KD, Fort A, Wu JW, Barsella A, Ribierre JC. Solvent-free fluidic organic dye lasers. OPTICS EXPRESS 2013; 21:11368-11375. [PMID: 23669993 DOI: 10.1364/oe.21.011368] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
We report on the demonstration of liquid organic dye lasers based on 9-(2-ethylhexyl)carbazole (EHCz), so-called liquid carbazole, doped with green- and red-emitting laser dyes. Both waveguide and Fabry-Perot type microcavity fluidic organic dye lasers were prepared by capillary action under solvent-free conditions. Cascade Förster-type energy transfer processes from liquid carbazole to laser dyes were employed to achieve color-variable amplified spontaneous emission and lasing. Overall, this study provides the first step towards the development of solvent-free fluidic organic semiconducting lasers and demonstrates a new kind of optoelectronic applications for liquid organic semiconductors.
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Affiliation(s)
- Eun Young Choi
- Department of Physics, CNRS-Ewha International Research Center, Ewha Womans University, Seoul 120-750, South Korea
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32
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Chen L, Li P, Tong H, Xie Z, Wang L, Jing X, Wang F. White electroluminescent single‐polymer achieved by incorporating three polyfluorene blue arms into a star‐shaped orange core. ACTA ACUST UNITED AC 2012. [DOI: 10.1002/pola.26061] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Lei Chen
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People's Republic of China
- Graduate School of Chinese Academy of Sciences, Beijing 100039, People's Republic of China
| | - Pengcheng Li
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People's Republic of China
- Graduate School of Chinese Academy of Sciences, Beijing 100039, People's Republic of China
| | - Hui Tong
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People's Republic of China
| | - Zhiyuan Xie
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People's Republic of China
| | - Lixiang Wang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People's Republic of China
| | - Xiabin Jing
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People's Republic of China
| | - Fosong Wang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People's Republic of China
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33
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Qu S, Wang H, Zhu W, Luo J, Fan Y, Song L, Zhang HX, Liu X. Toward highly fluorescence and ultralow-threshold amplified spontaneous emission in ordered solid state from twin-tapered bi-1,3,4-oxadiazole derivatives. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm14916h] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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34
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Wang L, Liu Y, Yang JX, Tao XT, Liu Z. Microstructured fluorescent biosensor based on energy migration for selective sensing of metalloprotein. Chem Commun (Camb) 2012; 48:5742-4. [DOI: 10.1039/c2cc31021j] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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35
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36
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Kawatsu T, Matsuda K, Hasegawa JY. Bridge-mediated excitation energy transfer pathways through protein media: a Slater determinant-based electronic coupling calculation combined with localized molecular orbitals. J Phys Chem A 2011; 115:10814-22. [PMID: 21861486 DOI: 10.1021/jp2068792] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A computational method for calculating electronic coupling and pathway of electron transfer (ET) has been extended to that for excitation energy transfer (EET). A molecular orbital (MO)-based description has been generalized to one based on Slater determinants. This approach reduces the approximations used for the Green's function method from the perturbation of chemical-bond interactions to the perturbation of the configuration interactions. It is, therefore, reasonable to apply this method to EET, which involves the transfer of an electron-hole pair. To represent EET donor, acceptor, and bridge states, we adopted recently developed localized molecular orbitals (LMOs) for constructing locally excited determinants. The LMO approach provides a chemically meaningful interpretation of how each local excitation on the bridge contributes to the total electronic coupling of the EET. We applied the method to six model peptides and calculated their electronic couplings as well as the direct and through-peptide terms. Although the through-peptide term is usually negligibly small compared with the direct term, it can dominate the EET reaction in appropriate situations. The direct term dominates in long-range interactions because the indirect term decays in shorter distances.
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Affiliation(s)
- Tsutomu Kawatsu
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University Kyoto-Daigaku-Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
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37
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Kwon JE, Park SY. Advanced organic optoelectronic materials: harnessing excited-state intramolecular proton transfer (ESIPT) process. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2011; 23:3615-42. [PMID: 21780312 DOI: 10.1002/adma.201102046] [Citation(s) in RCA: 732] [Impact Index Per Article: 56.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2011] [Indexed: 05/04/2023]
Abstract
Recently, organic fluorescent molecules harnessing the excited-state intramolecular proton transfer (ESIPT) process are drawing great attention due to their unique photophysical properties which facilitate novel optoelectronic applications. After a brief introduction to the ESIPT process and related photo-physical properties, molecular design strategies towards tailored emission are discussed in relation to their theoretical aspects. Subsequently, recent studies on advanced ESIPT molecules and their optoelectronic applications are surveyed, particularly focusing on chemical sensors, fluorescence imaging, proton transfer lasers, and organic light-emitting diodes (OLEDs).
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Affiliation(s)
- Ji Eon Kwon
- Creative Research Initiative Center for Supramolecular Optoelectronic, Materials and WCU Hybrid Materials Program, Department of Materials Science and Engineering, Seoul National University, Gwanak-gu, Korea
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38
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Rotschild C, Tomes M, Mendoza H, Andrew TL, Swager TM, Carmon T, Baldo MA. Cascaded energy transfer for efficient broad-band pumping of high-quality, micro-lasers. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2011; 23:3057-3060. [PMID: 21608050 DOI: 10.1002/adma.201100467] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2011] [Revised: 04/08/2011] [Indexed: 05/30/2023]
Affiliation(s)
- C Rotschild
- Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, 02139, USA.
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39
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Anni M, Gigli G, Zavelani-Rossi M, Gadermaier C, Lanzani G, Barbarella G, Favaretto L, Cingolani R. Tunable Optical Gain from Soluble Thiophene-Based Oligomers. ACTA ACUST UNITED AC 2011. [DOI: 10.1557/proc-665-c1.5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
ABSTRACTTunable optical gain is demonstrated, through pump and probe measurements, in spin coated neat films of soluble S,S-dioxide oligothiophenes with different functionalization pattern. The molecular functionalization with alkyl and aryl groups allows us to obtain photoluminescence efficiency up to 70%, good chemical stability, high solubility and tunable gain along the visible range from 470 nm to 660 nm. The gain cross section is up to 9*10-18 cm2. The gain relaxation dynamic is studied through time resolved pump and probe measurements. A comparison with some of the best organic materials for laser application is presented. From these results we conclude that thienyl-S,S-dioxide oligothiophenes are interesting materials for applications to organic lasers and amplifiers.
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40
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Chakaroun M, Coens A, Fabre N, Gourdon F, Solard J, Fischer A, Boudrioua A, Lee CC. Optimal design of a microcavity organic laser device under electrical pumping. OPTICS EXPRESS 2011; 19:493-505. [PMID: 21263589 DOI: 10.1364/oe.19.000493] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The quality factor of microcavity organic lasers, designed for operation under electric pumping, has been numerically investigated. The microcavity structure consists of an organic light emitting diode set in between multilayer dielectric mirrors centered for an emission at 620 nm. In order to optimize the quality factor, different parameters have been studied: the impact of high and low index materials used for the multilayer mirrors, the role of a spacer inserted in between the mirrors to obtain an extended cavity, and the effect of an absorbing electrode made of metallic or transparent conductive oxide layer. The results of our different optimizations have shown a quality factor (Q) as high as 15,000.
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Affiliation(s)
- M Chakaroun
- Laboratoire de Physique des Lasers-LPL, UMR CNRS 7538, Université Paris 13, Villetaneuse, France.
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41
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Azzaroni O, Lau KA. Layer-by-Layer Assemblies in Nanoporous Templates: Nano-Organized Design and Applications of Soft Nanotechnology. SOFT MATTER 2011; 7:8709-8724. [PMID: 22216060 PMCID: PMC3247160 DOI: 10.1039/c1sm05561e] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
The synergistic combination of layer-by-layer (LbL) assembly and nanoporous membrane templating has greatly facilitated the creation of complex and functional nanotubular structures. The approach takes advantage of both the new properties conferred by assembling diverse LbL building blocks and the tight dimensional control offered by nanotemplating to enable new functionalities that arise from the highly anisotropic "one-dimensional" LbL-nanotube format. In this review, we aim to convey the key developments and provide a current snap-shot of such templated LbL nanoarchitectures. We survey recent developments that have enabled the assembly of polymers, biomolecules and inorganic nanoparticles "à la carte", via electrostatic, covalent and specific (bio)recognition interactions. We also discuss the emerging mechanistic understanding of the LbL assembly process within the nanopore environment. Finally, we present a diverse range of LbL nanotube "devices" to illustrate the versatility of the nanotemplated LbL toolbox for generating functional soft nanotechnology.
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Affiliation(s)
- Omar Azzaroni
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA) – Departamento de Química – Facultad de Ciencias Exactas – Universidad Nacional de La Plata – CONICET – CC 16 Suc.4 (1900) La Plata – Argentina
| | - K.H. Aaron Lau
- Biomedical Engineering Department, Chemistry of Life Processes Institute, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208 - USA
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42
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Sun Y, Shopova SI, Wu CS, Arnold S, Fan X. Bioinspired optofluidic FRET lasers via DNA scaffolds. Proc Natl Acad Sci U S A 2010; 107:16039-42. [PMID: 20798062 PMCID: PMC2941270 DOI: 10.1073/pnas.1003581107] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Optofluidic dye lasers hold great promise for adaptive photonic devices, compact and wavelength-tunable light sources, and micro total analysis systems. To date, however, nearly all those lasers are directly excited by tuning the pump laser into the gain medium absorption band. Here we demonstrate bioinspired optofluidic dye lasers excited by FRET, in which the donor-acceptor distance, ratio, and spatial configuration can be precisely controlled by DNA scaffolds. The characteristics of the FRET lasers such as spectrum, threshold, and energy conversion efficiency are reported. Through DNA scaffolds, nearly 100% energy transfer can be maintained regardless of the donor and acceptor concentration. As a result, efficient FRET lasing is achieved at an unusually low acceptor concentration of micromolar, over 1,000 times lower than that in conventional optofluidic dye lasers. The lasing threshold is on the order of μJ/mm(2). Various DNA scaffold FRET lasers are demonstrated to illustrate vast possibilities in optofluidic laser designs. Our work opens a door to many researches and applications such as intracavity bio/chemical sensing, biocontrolled photonic devices, and biophysics.
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Affiliation(s)
- Yuze Sun
- Biomedical Engineering Department, University of Michigan, 1101 Beal Avenue, Ann Arbor, MI 48109
- Department of Biological Engineering, Bond Life Sciences Center, University of Missouri, Columbia, MO 65211; and
| | - Siyka I. Shopova
- Department of Biological Engineering, Bond Life Sciences Center, University of Missouri, Columbia, MO 65211; and
- MicroParticle PhotoPhysics Lab, Polytechnic Institute of New York University, Brooklyn, NY 11201
| | - Chung-Shieh Wu
- Department of Biological Engineering, Bond Life Sciences Center, University of Missouri, Columbia, MO 65211; and
| | - Stephen Arnold
- MicroParticle PhotoPhysics Lab, Polytechnic Institute of New York University, Brooklyn, NY 11201
| | - Xudong Fan
- Biomedical Engineering Department, University of Michigan, 1101 Beal Avenue, Ann Arbor, MI 48109
- Department of Biological Engineering, Bond Life Sciences Center, University of Missouri, Columbia, MO 65211; and
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43
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Park S, Kwon JE, Kim SH, Seo J, Chung K, Park SY, Jang DJ, Milián Medina B, Gierschner J, Park SY. A white-light-emitting molecule: frustrated energy transfer between constituent emitting centers. J Am Chem Soc 2009; 131:14043-9. [PMID: 19480450 DOI: 10.1021/ja902533f] [Citation(s) in RCA: 365] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
White-light-emitting single molecules are promising materials for use in a new generation of displays and light sources because they offer the possibility of simple fabrication with perfect color reproducibility and stability. To realize white-light emission at the molecular scale, thereby eliminating the detrimental concentration- or environment-dependent energy transfer problem in conventional fluorescent or phosphorescent systems, energy transfer between a larger band-gap donor and a smaller band-gap acceptor must be fundamentally blocked. Here, we present the first example of a concentration-independent ultimate white-light-emitting molecule based on excited-state intramolecular proton transfer materials. Our molecule is composed of covalently linked blue- and orange-light-emitting moieties between which energy transfer is entirely frustrated, leading to the production of reproducible, stable white photo- and electroluminescence.
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Affiliation(s)
- Sanghyuk Park
- Department of Materials Science and Engineering, Seoul National University, ENG 445, Seoul 151-744, Korea
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44
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Ner Y, Grote J, Stuart J, Sotzing G. White Luminescence from Multiple-Dye-Doped Electrospun DNA Nanofibers by Fluorescence Resonance Energy Transfer. Angew Chem Int Ed Engl 2009; 48:5134-8. [DOI: 10.1002/anie.200900885] [Citation(s) in RCA: 95] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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45
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Ner Y, Grote J, Stuart J, Sotzing G. White Luminescence from Multiple-Dye-Doped Electrospun DNA Nanofibers by Fluorescence Resonance Energy Transfer. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200900885] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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46
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Schmaltz B, Rouhanipour A, Räder HJ, Pisula W, Müllen K. Filling the Cavity of Conjugated Carbazole Macrocycles with Graphene Molecules: Monolayers Formed by Physisorption Serve as a Surface for Pulsed Laser Deposition. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200803156] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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47
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Schmaltz B, Rouhanipour A, Räder HJ, Pisula W, Müllen K. Filling the Cavity of Conjugated Carbazole Macrocycles with Graphene Molecules: Monolayers Formed by Physisorption Serve as a Surface for Pulsed Laser Deposition. Angew Chem Int Ed Engl 2009; 48:720-4. [DOI: 10.1002/anie.200803156] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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48
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Qiu D, Cheng Y, Wang L. Oligoaniline-Functionalized terpyridine ligands and their ruthenium(II) complexes: synthesis, spectroscopic property and redox behavior. Dalton Trans 2009:3247-61. [DOI: 10.1039/b820392j] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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49
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Malek K, Zborowski K, Gebski K, Proniewicz LM, Schroeder G. 1,3,4-oxadiazoles: evaluation of aromaticity and atomic charge distribution. Mol Phys 2008. [DOI: 10.1080/00268970802317512] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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50
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Wu C, Zheng Y, Szymanski C, McNeill J. Energy Transfer in a Nanoscale Multichromophoric System: Fluorescent Dye-Doped Conjugated Polymer Nanoparticles. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2008; 112:1772-1781. [PMID: 19221582 PMCID: PMC2600541 DOI: 10.1021/jp074149+] [Citation(s) in RCA: 140] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
We report on the fluorescence properties and the combined effects of energy diffusion and energy transfer in polyfluorene nanoparticles doped with a variety of fluorescent dyes. As the doping host, polyfluorene possesses extraordinary "light harvesting" ability, resulting in higher per-particle brightness as compared to dye-loaded silica nanoparticles of similar dimensions. Both the steady-state fluorescence spectra and time-resolved fluorescence measurements indicate highly efficient energy transfer from the host polymer to the acceptor dye molecules. A model that takes into account the combined effects of energy diffusion, Förster transfer, and particle size was developed. Comparisons of experimental data to the model results elucidate the importance of particle size and energy diffusion within the polymer in determining the optical properties of the doped conjugated polymer nanoparticles. Fluorescence quantum yields of ~40% and peak extinction coefficients of 1.5 × 10(9) M(-1)cm(-1) were determined for aqueous suspensions of ~30 nm diameter polymer nanoparticles doped with perylene or coumarin 6 (2 wt %). Photobleaching experiments indicate that energy transfer phenomena strongly influence the photostability of these dye-doped nanoparticles. Significant features of these nanoparticles include the high brightness, highly red-shifted emission spectrum, and excellent photostability, which are promising for biological labeling and sensing applications. In addition, the nanoparticles are a useful model system for studying energy transfer in dense, nanostructured, multichromophoric systems.
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Affiliation(s)
- Changfeng Wu
- Department of Chemistry and Center for Optical Materials Science and Engineering Technologies, Clemson University, Clemson, South Carolina 29634
| | - Yueli Zheng
- Department of Chemistry and Center for Optical Materials Science and Engineering Technologies, Clemson University, Clemson, South Carolina 29634
| | - Craig Szymanski
- Department of Chemistry and Center for Optical Materials Science and Engineering Technologies, Clemson University, Clemson, South Carolina 29634
| | - Jason McNeill
- Department of Chemistry and Center for Optical Materials Science and Engineering Technologies, Clemson University, Clemson, South Carolina 29634
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