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Zhong Y, Wang X, Li T, Yao Q, Dong W, Lu M, Bai X, Wu Z, Xie J, Zhang Y. White-Emitting Gold Nanocluster Assembly with Dynamic Color Tuning. NANO LETTERS 2024; 24:6997-7003. [PMID: 38721805 DOI: 10.1021/acs.nanolett.4c01377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2024]
Abstract
We report that constructed Au nanoclusters (NCs) can afford amazing white emission synergistically dictated by the Au(0)-dominated core-state fluorescence and Au(I)-governed surface-state phosphorescence, with record-high absolute quantum yields of 42.1% and 53.6% in the aqueous solution and powder state, respectively. Moreover, the dynamic color tuning is achieved in a wide warm-to-cold white-light range (with the correlated color temperature varied from 3426 to 24 973 K) by elaborately manipulating the ratio of Au(0) to Au(I) species and thus the electron transfer rate from staple motif to metal kernel. This study not only exemplifies the successful integration of multiple luminescent centers into metal NCs to accomplish efficient white-light emission but also inspires a feasible pathway toward customizing the optical properties of metal NCs by regulating electron transfer kinetics.
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Affiliation(s)
- Yuan Zhong
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, China
| | - Xue Wang
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, China
| | - Tingting Li
- College of Materials Science and Engineering, Jilin Jianzhu University, Changchun 130012, China
| | - Qiaofeng Yao
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Key Laboratory of Organic Integrated Circuits, Ministry of Education, Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, China
| | - Weinan Dong
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, China
| | - Min Lu
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, China
| | - Xue Bai
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, China
| | - Zhennan Wu
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, China
| | - Jianping Xie
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore 117585
| | - Yu Zhang
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, China
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2
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Sun J, Li N, Gong Z, Man Y, Zhong C, Duan C, Chen S, Zhang J, Han C, Xu H. Ligand-mediate exciton allocation enables efficient cluster-based white light-emitting diodes via single and heavy doping. Nat Commun 2024; 15:4997. [PMID: 38866737 PMCID: PMC11169358 DOI: 10.1038/s41467-024-49394-8] [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: 02/06/2024] [Accepted: 06/04/2024] [Indexed: 06/14/2024] Open
Abstract
Despite potential in high-resolution and low-cost displays and lighting, multi-doping structures and low concentrations (<1%) limit repeatability and stability of single-emissive-layer white light-emitting devices. Herein, we report a singly doped white-emitting system of blue thermally activated delayed fluorescence host matrix (CzAcSF) doped by yellow Cu4I4 cluster ([tBCzDppy]2Cu4I4). CzAcSF:x% [tBCzDppy]2Cu4I4 films realize photo- and electro-luminescence colors from cool white to warm white at x = 20-40. The external quantum efficiency of 23.5% was achieved at x = 30, indicating the record-high efficiency among solution-processed analogs and the largest doping concentration among efficient white light-emitting devices. It shows that di(tert-butyl)carbazole moieties in [tBCzDppy]2Cu4I4 provide high-lying excited energy levels at~2.6 eV to mediate energy transfer from CzAcSF (2.9 eV) to coordinated Cu4I4 (2.2 eV). Our results demonstrate the antenna effect of ligands on optimizing charge and energy transfer in organic-cluster systems and superiority of white cluster light-emitting diodes in practical applications.
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Affiliation(s)
- Jianan Sun
- MOE Key Laboratory of Functional Inorganic Material Chemistry, School of Chemistry and Material Science, Heilongjiang University, 74 Xuefu Road, Harbin, 150080, China
| | - Naiyu Li
- MOE Key Laboratory of Functional Inorganic Material Chemistry, School of Chemistry and Material Science, Heilongjiang University, 74 Xuefu Road, Harbin, 150080, China
| | - Zhuke Gong
- MOE Key Laboratory of Functional Inorganic Material Chemistry, School of Chemistry and Material Science, Heilongjiang University, 74 Xuefu Road, Harbin, 150080, China
| | - Yi Man
- MOE Key Laboratory of Functional Inorganic Material Chemistry, School of Chemistry and Material Science, Heilongjiang University, 74 Xuefu Road, Harbin, 150080, China
| | - Chunlei Zhong
- MOE Key Laboratory of Functional Inorganic Material Chemistry, School of Chemistry and Material Science, Heilongjiang University, 74 Xuefu Road, Harbin, 150080, China
| | - Chunbo Duan
- MOE Key Laboratory of Functional Inorganic Material Chemistry, School of Chemistry and Material Science, Heilongjiang University, 74 Xuefu Road, Harbin, 150080, China
| | - Shuo Chen
- MOE Key Laboratory of Functional Inorganic Material Chemistry, School of Chemistry and Material Science, Heilongjiang University, 74 Xuefu Road, Harbin, 150080, China
| | - Jing Zhang
- MOE Key Laboratory of Functional Inorganic Material Chemistry, School of Chemistry and Material Science, Heilongjiang University, 74 Xuefu Road, Harbin, 150080, China
| | - Chunmiao Han
- MOE Key Laboratory of Functional Inorganic Material Chemistry, School of Chemistry and Material Science, Heilongjiang University, 74 Xuefu Road, Harbin, 150080, China
| | - Hui Xu
- MOE Key Laboratory of Functional Inorganic Material Chemistry, School of Chemistry and Material Science, Heilongjiang University, 74 Xuefu Road, Harbin, 150080, China.
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3
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Yang J, Ma YX, Zong Y, Sun M, Wang Y, Zhang RL, Feng J, Wang CZ, Zhuo SP, Zhou J, Shi YL, Chen SH, Wang XD, Lin HT. Precise Synthesis of Organic Cocrystal Alloys with Full-Spectrum Emission Characteristics for the Stepless Color Changing Display. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2307129. [PMID: 38126615 DOI: 10.1002/smll.202307129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 11/17/2023] [Indexed: 12/23/2023]
Abstract
Organic luminescent materials are indispensable in optoelectronic displays and solid-state luminescence applications. Compared with single-component, multi-component crystalline materials can improve optoelectronic characteristics. This work forms a series of full-spectrum tunable luminescent charge-transfer (CT) cocrystals ranging from 400 to 800 nm through intermolecular collaborative self-assembly. What is even more interesting is that o-TCP-Cor(x)-Pe(1-x), p-TCP-Cor(x)-Pe(1-x), and o-TCP-AN(x)-TP(1-x) alloys are prepared based on cocrystals by doping strategies, which correspondingly achieve the stepless color change from blue (CIE [0.22, 0.44]) to green (CIE [0.16, 0.14]), from green (CIE [0.27, 0.56]) to orange (CIE [0.58, 0.42]), from yellow (CIE [0.40, 0.57]) to red (CIE [0.65, 0.35]). The work provides an efficient method for precisely synthesizing new luminescent organic semiconductor materials and lays a solid foundation for developing advanced organic solid-state displays.
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Affiliation(s)
- Jing Yang
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo, Shandong, 255000, P. R. China
| | - Ying-Xin Ma
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo, Shandong, 255000, P. R. China
| | - Yi Zong
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, Jiangsu, 215123, P. R. China
| | - Mao Sun
- School of resources and environmental engineering, Shandong University of Technology, Zibo, Shandong, 255000, P. R. China
| | - Yun Wang
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo, Shandong, 255000, P. R. China
| | - Ren-Long Zhang
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo, Shandong, 255000, P. R. China
| | - Jin Feng
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo, Shandong, 255000, P. R. China
| | - Chuan-Zeng Wang
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo, Shandong, 255000, P. R. China
| | - Shu-Ping Zhuo
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo, Shandong, 255000, P. R. China
| | - Jin Zhou
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo, Shandong, 255000, P. R. China
| | - Ying-Li Shi
- Department of Electrical and Electronic Engineering, Xi'an Jiaotong-Liverpool University, Suzhou, Jiangsu, 215123, P. R. China
| | - Shu-Hai Chen
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo, Shandong, 255000, P. R. China
| | - Xue-Dong Wang
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, Jiangsu, 215123, P. R. China
| | - Hong-Tao Lin
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo, Shandong, 255000, P. R. China
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Wu Y, Xin Y, Pan Y, Yiu SM, Yan J, Lau KC, Duan L, Chi Y. Ir(III) Metal Emitters with Cyano-Modified Imidazo[4,5-b]pyridin-2-ylidene Chelates for Deep-Blue Organic Light-Emitting Diodes. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024:e2309389. [PMID: 38689505 DOI: 10.1002/advs.202309389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2023] [Revised: 03/15/2024] [Indexed: 05/02/2024]
Abstract
Ir(III) carbene complexes have been explored as one of the best blue phosphors for their high performance. Herein, the authors designed and synthesized a series of blue-emitting Ir(III) phosphors (f-ct9a-c), featuring fac-coordinated cyano-imidazo[4,5-b]pyridin-2-ylidene cyclometalates. These Ir(III) complexes exhibit true-blue emission with a peak maximum spanning 448-467 nm, with high photoluminescence quantum yields of 81-88% recorded in degassed toluene. Moreover, OLED devices bearing phosphors f-ct9a and f-ct9b deliver maximum external quantum efficiencies (EQEmax) of 25.9% and 30.3%, together with Commission Internationale de L'Eclairage (CIEx,y) coordinates of (0.157, 0.225) and (0.142, 0.169), respectively. Remarkably, the f-ct9b-based device displays an incredible EQE of 29.0% at 5000 cd·m-2. The hyper-OLED device based on f-ct9b and ν-DABNA exhibits an EQEmax of 34.7% and CIEx,y coordinates of (0.122, 0.131), affirming high potentials in achieving efficient blue electroluminescence.
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Affiliation(s)
- Yixin Wu
- Department of Chemistry, Department of Materials Science and Engineering, Center of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong, Hong Kong, SAR, 999077, China
| | - Yangyang Xin
- Key Laboratory of Organic Optoelectronics and Molecular Engineering of Ministry of Education, Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Yi Pan
- Department of Chemistry, Department of Materials Science and Engineering, Center of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong, Hong Kong, SAR, 999077, China
| | - Shek-Man Yiu
- Department of Chemistry, Department of Materials Science and Engineering, Center of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong, Hong Kong, SAR, 999077, China
| | - Jie Yan
- Department of Chemistry, Department of Materials Science and Engineering, Center of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong, Hong Kong, SAR, 999077, China
| | - Kai Chung Lau
- Department of Chemistry, Department of Materials Science and Engineering, Center of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong, Hong Kong, SAR, 999077, China
| | - Lian Duan
- Key Laboratory of Organic Optoelectronics and Molecular Engineering of Ministry of Education, Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Yun Chi
- Department of Chemistry, Department of Materials Science and Engineering, Center of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong, Hong Kong, SAR, 999077, China
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5
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Huang Y, Ning L, Zhang X, Zhou Q, Gong Q, Zhang Q. Stimuli-fluorochromic smart organic materials. Chem Soc Rev 2024; 53:1090-1166. [PMID: 38193263 DOI: 10.1039/d2cs00976e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2024]
Abstract
Smart materials based on stimuli-fluorochromic π-conjugated solids (SFCSs) have aroused significant interest due to their versatile and exciting properties, leading to advanced applications. In this review, we highlight the recent developments in SFCS-based smart materials, expanding beyond organometallic compounds and light-responsive organic luminescent materials, with a discussion on the design strategies, exciting properties and stimuli-fluorochromic mechanisms along with their potential applications in the exciting fields of encryption, sensors, data storage, display, green printing, etc. The review comprehensively covers single-component and multi-component SFCSs as well as their stimuli-fluorochromic behaviors under external stimuli. We also provide insights into current achievements, limitations, and major challenges as well as future opportunities, aiming to inspire further investigation in this field in the near future. We expect this review to inspire more innovative research on SFCSs and their advanced applications so as to promote further development of smart materials and devices.
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Affiliation(s)
- Yinjuan Huang
- State Key Laboratory for Mechanical Behavior of Materials, Shaanxi International Research Center for Soft Matter, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, China.
| | - Lijian Ning
- State Key Laboratory for Mechanical Behavior of Materials, Shaanxi International Research Center for Soft Matter, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, China.
| | - Xiaomin Zhang
- State Key Laboratory for Mechanical Behavior of Materials, Shaanxi International Research Center for Soft Matter, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, China.
| | - Qian Zhou
- State Key Laboratory for Mechanical Behavior of Materials, Shaanxi International Research Center for Soft Matter, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, China.
| | - Qiuyu Gong
- Department of Thoracic Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China
| | - Qichun Zhang
- Department Materials Science and Engineering, Department of Chemistry & Center of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong, Kowloon, Hong Kong SAR 999077, China.
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6
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Gómez de Segura D, Corral-Zorzano A, Alcolea E, Moreno MT, Lalinde E. Phenylbenzothiazole-Based Platinum(II) and Diplatinum(II) and (III) Complexes with Pyrazolate Groups: Optical Properties and Photocatalysis. Inorg Chem 2024; 63:1589-1606. [PMID: 38247362 PMCID: PMC10806813 DOI: 10.1021/acs.inorgchem.3c03532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Revised: 11/21/2023] [Accepted: 12/22/2023] [Indexed: 01/23/2024]
Abstract
Based on 2-phenylbenzothiazole (pbt) and 2-(4-dimethylaminophenyl)benzothiazole (Me2N-pbt), mononuclear [Pt(pbt)(R'2-pzH)2]PF6 (R'2-pzH = pzH 1a, 3,5-Me2pzH 1b, 3,5-iPr2pzH 1c) and diplatinum (PtII-PtII) [Pt(pbt)(μ-R'2pz)]2 (R'2-pz = pz 2a, 3,5-Me2pz 2b, 3,5-iPr2pz 2c) and [Pt(Me2N-pbt)(μ-pz)]2 (3a) complexes have been prepared. In the presence of sunlight, 2a and 3a evolve, in CHCl3 solution, to form the PtIII-PtIII complexes [Pt(R-pbt)(μ-pz)Cl]2 (R = H 4a, NMe2 5a). Experimental and computational studies reveal the negligible influence of the pyrazole or pyrazolate ligands on the optical properties of 1a-c and 2a,b, which exhibit a typical 3IL/3MLCT emission, whereas in 2c the emission has some 3MMLCT contribution. 3a displays unusual dual, fluorescence (1ILCT or 1MLCT/1LC), and phosphorescence (3ILCT) emissions depending on the excitation wavelength. The phosphorescence is lost in aerated solutions due to sensitization of 3O2 and formation of 1O2, whose determined quantum yield is also wavelength dependent. The phosphorescence can be reversibly photoinduced (365 nm, ∼ 15 min) in oxygenated THF and DMSO solutions. In 4a and 5a, the lowest electronic transitions (S1-S3) have mixed characters (LMMCT/LXCT/L'XCT 4a and LMMCT/LXCT/ILCT 5a) and they are weakly emissive in rigid media. The 1O2 generation property of complex 3a is successfully used for the photooxidation of p-bromothioanisol showing its potential application toward photocatalysis.
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Affiliation(s)
- David Gómez de Segura
- Departamento de Química, Instituto
de Investigación en Química (IQUR), Complejo Científico
Tecnológico, Universidad de La Rioja, Madre de Dios 53, Logroño 26006, Spain
| | - Andrea Corral-Zorzano
- Departamento de Química, Instituto
de Investigación en Química (IQUR), Complejo Científico
Tecnológico, Universidad de La Rioja, Madre de Dios 53, Logroño 26006, Spain
| | - Eduardo Alcolea
- Departamento de Química, Instituto
de Investigación en Química (IQUR), Complejo Científico
Tecnológico, Universidad de La Rioja, Madre de Dios 53, Logroño 26006, Spain
| | - M. Teresa Moreno
- Departamento de Química, Instituto
de Investigación en Química (IQUR), Complejo Científico
Tecnológico, Universidad de La Rioja, Madre de Dios 53, Logroño 26006, Spain
| | - Elena Lalinde
- Departamento de Química, Instituto
de Investigación en Química (IQUR), Complejo Científico
Tecnológico, Universidad de La Rioja, Madre de Dios 53, Logroño 26006, Spain
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M NK, Lyngkhoi DL, Gaikwad S, Samanta J, Ahamed R, Khatua S, Pramanik S. Excitation wavelength-dependent multi-coloured and white-light emissive pyrene-based hydrazones: suppression of Kasha's rule. Chem Commun (Camb) 2023; 59:14122-14125. [PMID: 37947216 DOI: 10.1039/d3cc04584f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2023]
Abstract
Multi-coloured and white-light emissions from pyrene-based hydrazones are described. They exhibit excitation wavelength-dependent emissions in solution due to the suppression of Kasha's rule. Interestingly, in dimethylformamide, 1-3 emit light that covers all the regions of primary colours as a function of excitation wavelength, and 1 and 2 emit white light (λex = 420 nm) in isopropanol.
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Affiliation(s)
- Naveen Kumar M
- Department of Chemistry, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, 603203, India.
| | - Deikrisha Lyngdoh Lyngkhoi
- Centre for Advanced Studies, Department of Chemistry, North-Eastern Hill University Shillong, Meghalaya 793022, India.
| | - Sudhakar Gaikwad
- Division of Organic Chemistry, CSIR-National Chemical Laboratory, Dr Homi Bhabha Road, Pashan, 411 008, Pune, Maharashtra, India
| | - Jayanta Samanta
- Department of Chemistry, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, 603203, India.
| | - Rafiq Ahamed
- Division of Organic Chemistry, CSIR-National Chemical Laboratory, Dr Homi Bhabha Road, Pashan, 411 008, Pune, Maharashtra, India
| | - Snehadrinarayan Khatua
- Centre for Advanced Studies, Department of Chemistry, North-Eastern Hill University Shillong, Meghalaya 793022, India.
| | - Susnata Pramanik
- Department of Chemistry, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, 603203, India.
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Tao P, Zheng XK, Jiang H, Sheng X, Deng Y, Chan YYI, Zhao Q, Wong WY. Efficient 1-(thiophen-2-yl)isoquinoline-based ionic iridophosphors with bulky counterions for solution-processed deep-red electroluminescence. Dalton Trans 2023; 52:15496-15502. [PMID: 37556247 DOI: 10.1039/d3dt02061d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/11/2023]
Abstract
A pair of high-efficiency deep-red emissive ionic iridophosphors (Ira and Irb) showing high photoluminescence quantum yields (PLQYs) are rationally designed by using 1-(thiophen-2-yl)isoquinoline as the cyclometalating ligand. Two bulky tetraarylborate anions (tetraphenylborate and tetrakis(3,5-bis(trifluoromethyl)phenyl)borate) are selected to improve their PLQYs in both solution and aggregated states, which enables efficient electroluminescence via a solution-processed approach. The variation of the tetraarylborate anions also aims to tune the photophysical properties of these deep-red emissive iridophosphors. Both ionic iridophosphors emit intense deep-red room-temperature phosphorescence in both solution and aggregated states. The phosphorescence spectra of both complexes are similar (630 nm with a shoulder emission of 686 nm) in CH2Cl2, originating from the same cationic species of the complexes. Both complexes show high PLQYs in CH2Cl2 (0.41 for Ira, 0.43 for Irb) and neat films (0.27 for Ira, 0.34 for Irb). Moreover, they serve as triplet emitters to evaluate their performance in solution-processed deep-red electroluminescent devices. The maximum external quantum efficiencies for the deep-red electroluminescence are 7.3% with an emission maximum of 649 nm for Ira, and 10.2% with an emission maximum of 635 nm for Irb, respectively, implying that they are good candidates for high-performance electroluminescence.
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Affiliation(s)
- Peng Tao
- Department of Applied Biology and Chemical Technology and Research Institute for Smart Energy, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China.
- The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen 518057, China
| | - Xiao-Kang Zheng
- Department of Applied Biology and Chemical Technology and Research Institute for Smart Energy, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China.
| | - He Jiang
- Department of Applied Biology and Chemical Technology and Research Institute for Smart Energy, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China.
| | - Xinghao Sheng
- Department of Applied Biology and Chemical Technology and Research Institute for Smart Energy, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China.
| | - Yongjing Deng
- State Key Laboratory of Organic Electronics and Information Displays, Institute of Advanced Materials (IAM) & Institute of Flexible Electronics (Future Technology), Nanjing University of Posts and Telecommunications, Nanjing 210023, China.
| | - Yuk Yin Ian Chan
- Department of Applied Biology and Chemical Technology and Research Institute for Smart Energy, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China.
| | - Qiang Zhao
- State Key Laboratory of Organic Electronics and Information Displays, Institute of Advanced Materials (IAM) & Institute of Flexible Electronics (Future Technology), Nanjing University of Posts and Telecommunications, Nanjing 210023, China.
| | - Wai-Yeung Wong
- Department of Applied Biology and Chemical Technology and Research Institute for Smart Energy, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China.
- The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen 518057, China
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9
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Wu SH, Zhang Z, Zheng RH, Yang R, Wang L, Shao JY, Gong ZL, Zhong YW. Dual-Emissive Monoruthenium Complexes of N(CH 3)-Bridged Ligand: Synthesis, Characterization, and Substituent Effect. MATERIALS (BASEL, SWITZERLAND) 2023; 16:6792. [PMID: 37895773 PMCID: PMC10607950 DOI: 10.3390/ma16206792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2023] [Revised: 10/13/2023] [Accepted: 10/19/2023] [Indexed: 10/29/2023]
Abstract
Three monoruthenium complexes 1(PF6)2-3(PF6)2 bearing an N(CH3)-bridged ligand have been synthesized and characterized. These complexes have a general formula of [Ru(bpy)2(L)](PF6)2, where L is a 2,5-di(N-methyl-N'-(pyrid-2-yl)amino)pyrazine (dapz) derivative with various substituents, and bpy is 2,2'-bipyridine. The photophysical and electrochemical properties of these compounds have been examined. The solid-state structure of complex 3(PF6)2 is studied by single-crystal X-ray analysis. These complexes show two well-separated emission bands centered at 451 and 646 nm (Δλmax = 195 nm) for 1(PF6)2, 465 and 627 nm (Δλmax = 162 nm) for 2(PF6)2, and 455 and 608 nm (Δλmax = 153 nm) for 3(PF6)2 in dilute acetonitrile solution, respectively. The emission maxima of the higher-energy emission bands of these complexes are similar, while the lower-energy emission bands are dependent on the electronic nature of substituents. These complexes display two consecutive redox couples owing to the stepwise oxidation of the N(CH3)-bridged ligand and ruthenium component. Moreover, these experimental observations are analyzed by computational investigation.
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Affiliation(s)
- Si-Hai Wu
- School of Medicine, Huaqiao University, Quanzhou 362021, China; (Z.Z.); (R.-H.Z.); (R.Y.)
| | - Zhe Zhang
- School of Medicine, Huaqiao University, Quanzhou 362021, China; (Z.Z.); (R.-H.Z.); (R.Y.)
| | - Ren-Hui Zheng
- School of Medicine, Huaqiao University, Quanzhou 362021, China; (Z.Z.); (R.-H.Z.); (R.Y.)
| | - Rong Yang
- School of Medicine, Huaqiao University, Quanzhou 362021, China; (Z.Z.); (R.-H.Z.); (R.Y.)
| | - Lianhui Wang
- School of Medicine, Huaqiao University, Quanzhou 362021, China; (Z.Z.); (R.-H.Z.); (R.Y.)
| | - Jiang-Yang Shao
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China; (J.-Y.S.); (Y.-W.Z.)
| | - Zhong-Liang Gong
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China; (J.-Y.S.); (Y.-W.Z.)
| | - Yu-Wu Zhong
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China; (J.-Y.S.); (Y.-W.Z.)
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10
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Fan Y, Fan S, Liu L, Guo S, He J, Li X, Lian Z, Guo W, Chen X, Wang Y, Jiang H. Efficient manipulation of Förster resonance energy transfer through host-guest interaction enables tunable white-light emission and devices in heterotopic bisnanohoops. Chem Sci 2023; 14:11121-11130. [PMID: 37860654 PMCID: PMC10583698 DOI: 10.1039/d3sc04358d] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Accepted: 09/24/2023] [Indexed: 10/21/2023] Open
Abstract
In this study, we synthesized and reported the heterotopic bisnanohoops P5-[8,10]CPPs containing cycloparaphenylenes (CPPs) and a pillar[5]arene unit, which act not only as energy donors but also as a host for binding energy acceptors. We demonstrated that a series of elegant FRET systems could be constructed successfully through self-assembly between donors P5-[8,10]CPPs and acceptors with different emissions via host-guest interaction. These FRET systems further allow us to finely adjust the donors P5-[8,10]CPPs and acceptors (BODIPY-Br and Rh-Br) for achieving multiple color-tunable emissions, particularly white-light emission. More importantly, these host-guest complexes were successfully utilized in the fabrication of white-light fluorescent films and further integrated with a 365 nm LED lamp to create white LED devices. The findings highlight a new application of carbon nanorings in white-light emission materials, beyond the common recognition of π-conjugated molecules.
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Affiliation(s)
- Yanqing Fan
- College of Chemistry, Beijing Normal University Beijing 100875 P. R. China
| | - Shimin Fan
- College of Chemistry, Beijing Normal University Beijing 100875 P. R. China
| | - Lin Liu
- College of Chemistry, Beijing Normal University Beijing 100875 P. R. China
| | - Shengzhu Guo
- College of Chemistry, Beijing Normal University Beijing 100875 P. R. China
| | - Jing He
- College of Chemistry, Beijing Normal University Beijing 100875 P. R. China
| | - Xiaonan Li
- College of Chemistry, Beijing Normal University Beijing 100875 P. R. China
| | - Zhe Lian
- College of Chemistry, Beijing Normal University Beijing 100875 P. R. China
| | - Weijie Guo
- College of Chemistry, Beijing Normal University Beijing 100875 P. R. China
| | - Xuebo Chen
- College of Chemistry, Beijing Normal University Beijing 100875 P. R. China
| | - Ying Wang
- College of Chemistry, Beijing Normal University Beijing 100875 P. R. China
| | - Hua Jiang
- College of Chemistry, Beijing Normal University Beijing 100875 P. R. China
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11
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Qu Z, Guo Y, Zhang J, Zhou Z. Mesomerism induced temperature-dependent multicomponent phosphorescence emissions in ClBDBT. Chem Sci 2023; 14:10096-10102. [PMID: 37772120 PMCID: PMC10529706 DOI: 10.1039/d3sc03963c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Accepted: 08/16/2023] [Indexed: 09/30/2023] Open
Abstract
Quantum mechanics/molecular mechanics (QM/MM) and molecular dynamics (MD) methods were applied to systematically investigate the temperature-dependent phosphorescence emission of dibenzo[b,d]thiophen-2-yl(4-chlorophenyl)methanone (ClBDBT) and its derivatives. The calculated temperature-dependent spectra on the lowest triplet state (T1) are in good agreement with the experimental observations, which means that the two-component white light emission should stem from the T1 state. The further MD simulations demonstrate the existence of two mesomerism structures at room temperature which can emit two lights simultaneously. The multi-component light emissions induced by mesomerism structures have advantages in balancing the distribution of excitons which could be beneficial to obtain pure white light along with stable Commission Internationale de l'Éclairage (CIE) coordinates. We hope this mesomerism concept can be further used to design new white light emitters based on room-temperature phosphorescence.
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Affiliation(s)
- Zexing Qu
- Institute of Theoretical Chemistry, College of Chemistry, Jilin University Changchun 130023 China
| | - Yujie Guo
- Institute of Theoretical Chemistry, College of Chemistry, Jilin University Changchun 130023 China
| | - Jilong Zhang
- Institute of Theoretical Chemistry, College of Chemistry, Jilin University Changchun 130023 China
| | - Zhongjun Zhou
- Institute of Theoretical Chemistry, College of Chemistry, Jilin University Changchun 130023 China
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12
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Xie JX, Lee CC, Huang LM, Lin HT, Luo D, Hsieh CH, Liu SW, Chen CH. Positional Isomeric Cyano-Substituted Bis(2-phenylpyridine)(acetylacetonate)iridium Complexes for Efficient Organic Light-Emitting Diodes with Extended Color Range. ACS APPLIED MATERIALS & INTERFACES 2023; 15:44022-44032. [PMID: 37622729 DOI: 10.1021/acsami.3c07430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/26/2023]
Abstract
Bis(2-phenylpyridine)(acetylacetonate)iridium, Ir(ppy)2(acac), is a benchmark green emitter for phosphorescent organic light-emitting diodes (PhOLEDs). In this work, we reported three positional isomeric cyano-substituted Ir(ppy)2(acac) complexes, i.e., Ir(3-CN), Ir(4-CN), and Ir(10-CN), with the emission in the yellow to red region (544-625 nm). Through theoretical investigation and single-crystal analysis, it was found that the introduction of cyano substitution at various positions of the ppy ligand allows for tuning the electron distribution and coordination bond length of Ir complexes. Therefore, the charge transfer property of Ir complexes is enhanced such that the energy gap of the cyano-substituted Ir(ppy)2(acac) complexes was reduced. In addition, Ir(3-CN), Ir(4-CN), and Ir(10-CN) exhibited high PLQYs of 83, 54, and 75%, respectively, with the phosphorescence lifetime in the range of 0.79-2.08 μs. Notably, the device utilizing Ir(3-CN) as the emitter exhibited a maximum external quantum efficiency (EQE) of 25.4%, current efficiency of 56.9 cd A-1, power efficiency of 68.7 lm W-1, and brightness of 61,340 cd m-2 at 8 V. The EQE of this device remained 24.3 and 19.9% at luminances of 1,000 and 10,000 cd m-2, corresponding to the efficiency roll-off of 4.3 and 21.7%, respectively. Comparing to the Ir complexes using the ligand with an extended conjugated structure, our results demonstrated a simple molecular design strategy for phosphorescence emitters with reduced molecular weight for efficient PhOLEDs in the yellow to red color region.
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Affiliation(s)
- Jia-Xun Xie
- Organic Electronics Research Center, Ming Chi University of Technology, New Taipei City 24301, Taiwan
- Department of Electronic Engineering, National Taiwan University of Science and Technology, Taipei 10617, Taiwan
| | - Chih-Chien Lee
- Department of Electronic Engineering, National Taiwan University of Science and Technology, Taipei 10617, Taiwan
| | - Lin-Ming Huang
- Department of Chemistry, Tamkang University, New Taipei City 25137, Taiwan
| | - Huang-Teng Lin
- Department of Chemistry, Tamkang University, New Taipei City 25137, Taiwan
| | - Dian Luo
- Department of Electronic Engineering, Ming Chi University of Technology, New Taipei City 24301, Taiwan
| | - Chung-Hung Hsieh
- Department of Chemistry, Tamkang University, New Taipei City 25137, Taiwan
| | - Shun-Wei Liu
- Organic Electronics Research Center, Ming Chi University of Technology, New Taipei City 24301, Taiwan
- Department of Electronic Engineering, Ming Chi University of Technology, New Taipei City 24301, Taiwan
| | - Chih-Hsin Chen
- Department of Chemistry, Tamkang University, New Taipei City 25137, Taiwan
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13
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Zhao X, Yin H, Zhang W, Guo J, Shi Y. ESIPT-induced spin-orbit coupling enhancement leads to tautomer fluorescence quenching of the 10-HHBF molecule. Phys Chem Chem Phys 2023; 25:21604-21611. [PMID: 37551530 DOI: 10.1039/d3cp02237d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/09/2023]
Abstract
We present novel insights into the interplay between excited state intramolecular proton transfer (ESIPT) and spin-orbit coupling (SOC) in the 10-hydroxy-11H-benzo[b]fluoren-11-one (10-HHBF) molecule, utilizing the time-dependent density functional theory approach and femtosecond transient absorption spectroscopy. Our discoveries entail a reassessment of the luminescence mechanism for 10-HHBF, characterizing it as an ESIPT fluorophore. Additionally, we demonstrate that the molecule undergoes intersystem crossing (ISC) following proton transfer, which quenches the fluorescence of the proton-transferred state, thus resulting in the absence of dual emission and a limited spectral range of fluorescence. Furthermore, our investigation reveals that 10-HHBF displays an SOC enhancement feature induced by ESIPT, which facilitates the ISC process. This trait serves as a barrier to the application of 10-HHBF in single-molecule white light emitters (SMWLEs). Our findings underscore the notable influence of the ESIPT-induced spin-orbit interaction enhancement on luminescent properties, which necessitates consideration in the design of SMWLEs.
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Affiliation(s)
- Xin Zhao
- Institute of Atomic and Molecular Physics, Jilin University, Changchun, 130012, China.
| | - Hang Yin
- Institute of Atomic and Molecular Physics, Jilin University, Changchun, 130012, China.
| | - Wentian Zhang
- Institute of Atomic and Molecular Physics, Jilin University, Changchun, 130012, China.
| | - Jie Guo
- Institute of Atomic and Molecular Physics, Jilin University, Changchun, 130012, China.
| | - Ying Shi
- Institute of Atomic and Molecular Physics, Jilin University, Changchun, 130012, China.
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14
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Salthouse R, Sil A, Gildea LF, Yufit DS, Williams JAG. Platinum(II) Complexes of Nonsymmetrical NCN-Coordinating Ligands: Unimolecular and Excimeric Luminescence Properties and Comparison with Symmetrical Analogues. Inorg Chem 2023; 62:12356-12371. [PMID: 37498694 PMCID: PMC10410614 DOI: 10.1021/acs.inorgchem.3c01439] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Indexed: 07/29/2023]
Abstract
A series of seven new platinum(II) complexes PtLnCl have been prepared, where Ln is an NCN-coordinating ligand comprising a benzene ring 1,3-disubstituted with two different azaheterocycles. In PtL1-5Cl, one heterocycle is a simple pyridine ring, while the other is an isoquinoline, a quinoline, a pyrimidine (L1, L2, L3), or a p-CF3- or p-OMe-substituted pyridine (L4 and L5). PtL6Cl incorporates both a p-CF3 and a p-OMe-substituted pyridine. The synthesis of the requisite proligands HLn is achieved using Pd-catalyzed cross-coupling methodology. The molecular structures of six of the Pt(II) complexes have been determined by X-ray diffraction. All the complexes are brightly luminescent in deoxygenated solution at room temperature. The absorption and emission properties are compared with those of the corresponding symmetrical complexes featuring two identical heterocycles, PtLnsymCl, and of the parent Pt(dpyb)Cl containing two unsubstituted pyridines [dpybH = 1,3-di(2-pyridyl)benzene]. While the absorption spectra of the nonsymmetrical complexes show features of both PtLnsymCl and Pt(dpyb)Cl, the emission generally resembles that of whichever of the corresponding symmetrical complexes has the lower-energy emission. PtL1Cl differs in that─at room temperature but not at 77 K─it displays emission bands that can be attributed to excited states involving both the pyridine and the isoquinoline rings, despite the latter being unequivocally lower in energy. This unusual behavior is attributed to thermally activated repopulation of the former excited state from the latter, facilitated by the very long-lived nature of the isoquinoline-based excited state. At elevated concentrations, all the complexes show an additional red-shifted emission band attributable to excimers. For PtL1Cl, the excimer strikingly dominates the emission spectra at all but the lowest concentrations (<10-5 M). Trends in the energies of the excimers and their propensity to form are compared with those of the symmetrical analogues.
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Affiliation(s)
| | - Amit Sil
- Department of Chemistry, Durham
University, South Road, Durham DH1
3LE, U.K.
| | - Louise F. Gildea
- Department of Chemistry, Durham
University, South Road, Durham DH1
3LE, U.K.
| | - Dmitry S. Yufit
- Department of Chemistry, Durham
University, South Road, Durham DH1
3LE, U.K.
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15
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Fang P, Huo P, Wang L, Zhao Z, Yu G, Huang Y, Bian Z, Liu Z. Lanthanide complexes with d-f transition: new emitters for single-emitting-layer white organic light-emitting diodes. LIGHT, SCIENCE & APPLICATIONS 2023; 12:170. [PMID: 37419880 DOI: 10.1038/s41377-023-01211-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 06/13/2023] [Accepted: 06/13/2023] [Indexed: 07/09/2023]
Abstract
White organic light-emitting diodes (WOLEDs) is a new generation of lighting technology and has stimulated wide-ranging studies. Despite the advantage of simple device structure, single-emitting-layer WOLEDs (SEL-WOLEDs) still face the challenges of difficult material screening and fine energy level regulation. Herein, we report efficient SEL-WOLEDs with a sky-blue emitting cerium(III) complex Ce-TBO2Et and an orange-red emitting europium(II) complex Eu(Tp2Et)2 as the emitters, showing a maximum external quantum efficiency of 15.9% and Commission Internationale de l'Eclairage coordinates of (0.33, 0.39) at various luminances. Most importantly, the electroluminescence mechanism of direct hole capture and hindered energy transfer between the two emitters facilitate a manageable weight doping concentration of 5% for Eu(Tp2Et)2, avoiding the low concentration (<1%) of the low-energy emitter in typical SEL-WOLEDs. Our results indicate that d-f transition emitters may circumvent fine energy level regulation and provide development potential for SEL-WOLEDs.
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Affiliation(s)
- Peiyu Fang
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, 100871, Beijing, China
| | - Peihao Huo
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, 100871, Beijing, China
| | - Liding Wang
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, 100871, Beijing, China
| | - Zifeng Zhao
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, 100871, Beijing, China
| | - Gang Yu
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, 100871, Beijing, China
| | - Yanyi Huang
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, 100871, Beijing, China
| | - Zuqiang Bian
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, 100871, Beijing, China
| | - Zhiwei Liu
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, 100871, Beijing, China.
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16
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Kawashiro M, Mori T, Ito M, Ando N, Yamaguchi S. Photodissociative Modules that Control Dual-Emission Properties in Donor-π-Acceptor Organoborane Fluorophores. Angew Chem Int Ed Engl 2023; 62:e202303725. [PMID: 37014627 DOI: 10.1002/anie.202303725] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 03/31/2023] [Accepted: 04/03/2023] [Indexed: 04/05/2023]
Abstract
Donor-π-acceptor fluorophores that consist of an electron-donating amino group and an electron-accepting triarylborane moiety generally exhibit substantial solvatochromism in their fluorescence while retaining high fluorescence quantum yields even in polar media. Herein, we report a new family of this compound class, which bears ortho-P(=X)R2 -substituted phenyl groups (X=O or S) as a photodissociative module. The P=X moiety that intramolecularly coordinates to the boron atom undergoes dissociation in the excited state, giving rise to dual emission from the corresponding tetra- and tricoordinate boron species. The susceptibility of the systems to photodissociation depends on the coordination ability of the P=O and P=S moieties, whereby the latter facilitates dissociation. The intensity ratios of the dual emission bands are sensitive to environmental parameters, including temperature, solution polarity, and the viscosity of the medium. Moreover, precise tuning of the P(=X)R2 group and the electron-donating amino moiety led to single-molecule white emission in solution.
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Affiliation(s)
- Midori Kawashiro
- Department of Chemistry, Graduate School of Science and Integrated Research Consortium on Chemical Sciences (IRCCS), Nagoya University, Furo, Chikusa, Nagoya, 464-8602, Japan
| | - Tatsuya Mori
- Department of Chemistry, Graduate School of Science and Integrated Research Consortium on Chemical Sciences (IRCCS), Nagoya University, Furo, Chikusa, Nagoya, 464-8602, Japan
| | - Masato Ito
- Department of Chemistry, Graduate School of Science and Integrated Research Consortium on Chemical Sciences (IRCCS), Nagoya University, Furo, Chikusa, Nagoya, 464-8602, Japan
| | - Naoki Ando
- Department of Chemistry, Graduate School of Science and Integrated Research Consortium on Chemical Sciences (IRCCS), Nagoya University, Furo, Chikusa, Nagoya, 464-8602, Japan
| | - Shigehiro Yamaguchi
- Department of Chemistry, Graduate School of Science and Integrated Research Consortium on Chemical Sciences (IRCCS), Nagoya University, Furo, Chikusa, Nagoya, 464-8602, Japan
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Furo, Chikusa, Nagoya, 464-8601, Japan
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17
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Li Z, Zhao C, Lin X, Ouyang G, Liu M. Stepwise Solution-Interfacial Nanoarchitectonics for Assembled Film with Full-Color and White-Light Circularly Polarized Luminescence. ACS APPLIED MATERIALS & INTERFACES 2023. [PMID: 37329570 DOI: 10.1021/acsami.3c05803] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
The fabrication of chiral thin films with tunable circularly polarized luminescence (CPL) colors is important in developing chiroptical materials but remains challenging due to the lack of assembly-initiated chiral film formation methodology. Here, by adopting a combined solution aggregation and interfacial assembly strategy, we report the fabrication of chiral film materials with full-color and white-light CPL. A biquinoline glutamic acid ester (abbreviated as BQGE) shows a typical aggregation-induced emission property with blue CPL after solution aggregation. Subsequent interfacial assembly of these solution aggregates on a solid substrate leads to the formation of a CPL active film consisting of nanobelt structures. Since the BQGE molecule has a coordination site, the CPL emission of an individual BQGE film can be extended from blue to green emission upon coordination with a zinc ion, accompanied by morphology transition from nanobelts to nanofibers. Further extension to red-color CPL is successfully achieved by coassembly with an achiral acceptor dye. Interestingly, the proper combination of coordination ratio and acceptor loading ratio provides bright white-light CPL emission from the BQGE/Zn2+/PDA triad composite film. This work provides a new approach to fabricating chiroptical film materials with controlled microscopic morphology and tunable CPL properties.
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Affiliation(s)
- Zujian Li
- Henan Institute of Advanced Technology, Zhengzhou University, Zhengzhou 450052, China
- CAS Key Laboratory of Colloid, Interface and Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, No. 2 North First Street, Zhongguancun, Beijing 100190, China
| | - Chenyang Zhao
- Henan Institute of Advanced Technology, Zhengzhou University, Zhengzhou 450052, China
- CAS Key Laboratory of Colloid, Interface and Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, No. 2 North First Street, Zhongguancun, Beijing 100190, China
| | - Xuerong Lin
- Henan Institute of Advanced Technology, Zhengzhou University, Zhengzhou 450052, China
- CAS Key Laboratory of Colloid, Interface and Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, No. 2 North First Street, Zhongguancun, Beijing 100190, China
| | - Guanghui Ouyang
- CAS Key Laboratory of Colloid, Interface and Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, No. 2 North First Street, Zhongguancun, Beijing 100190, China
| | - Minghua Liu
- Henan Institute of Advanced Technology, Zhengzhou University, Zhengzhou 450052, China
- CAS Key Laboratory of Colloid, Interface and Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, No. 2 North First Street, Zhongguancun, Beijing 100190, China
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18
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Biesen L, Müller TJJ. Single molecule aggregation-induced dual and white-light emissive etherified aroyl- S, N-ketene acetals via one-pot synthesis. RSC Adv 2023; 13:16867-16871. [PMID: 37283871 PMCID: PMC10240259 DOI: 10.1039/d3ra02935b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Accepted: 05/22/2023] [Indexed: 06/08/2023] Open
Abstract
Etherified aroyl-S,N-ketene acetals are readily synthesized by a novel one-pot addition-elimination-Williamson-etherification sequence. Although the underlying chromophore remains constant, derivatives show pronounced color-tuning of solid-state emission and AIE characteristics, whereas a hydroxy-methyl derivative represents an easily accessible mono molecular aggregation-induced white-light emitter.
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Affiliation(s)
- Lukas Biesen
- Institut für Organische Chemie und Makromolekulare Chemie, Heinrich-Heine-Universität Düsseldorf Universitätsstraße 1 D-40225 Düsseldorf Germany
| | - Thomas J J Müller
- Institut für Organische Chemie und Makromolekulare Chemie, Heinrich-Heine-Universität Düsseldorf Universitätsstraße 1 D-40225 Düsseldorf Germany
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19
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Ma S, Ma H, Yang K, Tan Z, Zhao B, Deng J. Intense Circularly Polarized Fluorescence and Room-Temperature Phosphorescence in Carbon Dots/Chiral Helical Polymer Composite Films. ACS NANO 2023; 17:6912-6921. [PMID: 37000903 DOI: 10.1021/acsnano.3c00713] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
Chiral carbon dots (C-dots) with a circularly polarized fluorescence (CPF) property have attracted tremendous attention due to their significant applications in chiral optoelectronics and theranostics. However, constructing circularly polarized room-temperature phosphorescent (CPRTP) C-dots remains a great challenge. Herein, a strategy is established to achieve efficient CPF and CPRTP emissions in C-dots/chiral helical polymer bilayer composite film. Taking advantage of the chiral filter effect of chiral helical polymer, intense CPF and CPRTP emissions with large dissymmetric factors up to 1.4 × 10-1 and 1.2 × 10-2 are respectively obtained, even though there is only a simple interface contact between the C-dots layer and the chiral helical polymer layer. More importantly, white-color CPF emission and multiple information display and encryption are further realized based on the prepared chiral luminescent composite films.
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Affiliation(s)
- Shuo Ma
- State Key Laboratory of Chemical Resource Engineering, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Huanyu Ma
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
| | - Kai Yang
- State Key Laboratory of Chemical Resource Engineering, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Zhan'ao Tan
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
| | - Biao Zhao
- State Key Laboratory of Chemical Resource Engineering, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Jianping Deng
- State Key Laboratory of Chemical Resource Engineering, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
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20
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Tauchi D, Koida T, Nojima Y, Hasegawa M, Mazaki Y, Inagaki A, Sugiura KI, Nagaya Y, Tsubaki K, Shiga T, Nagata Y, Nishikawa H. Aggregation-induced circularly polarized phosphorescence of Pt(II) complexes with an axially chiral BINOL ligand. Chem Commun (Camb) 2023; 59:4004-4007. [PMID: 36917013 DOI: 10.1039/d2cc06198h] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/11/2023]
Abstract
A pair of chiral Pt(II) complexes coordinated by simple BINOL and bipyridine ligands displaying aggregation-induced phosphorescence and circularly polarized luminescence were characterized by X-ray crystallography and absorption and emission spectroscopies. The emission of the powder sample was reddish whereas the thin film dispersed in PMMA (fPf = 1 wt%) exhibited a white emission.
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Affiliation(s)
- Daiki Tauchi
- Graduate School of Science and Engineering, Ibaraki University, 2-1-1 Bunkyo, Mito, Ibaraki 310-8512, Japan.
| | - Taiki Koida
- Graduate School of Science and Engineering, Ibaraki University, 2-1-1 Bunkyo, Mito, Ibaraki 310-8512, Japan.
| | - Yuki Nojima
- Graduate School of Science, Kitasato University, Kanagawa 252-0373, Japan
| | - Masahi Hasegawa
- Graduate School of Science, Kitasato University, Kanagawa 252-0373, Japan
| | - Yasuhiro Mazaki
- Graduate School of Science, Kitasato University, Kanagawa 252-0373, Japan
| | - Akiko Inagaki
- Faculty of Science and Technology, Seikei University, Tokyo, 180-8633, Japan
| | - Ken-Ichi Sugiura
- Graduate School of Science, Tokyo Metropolitan University, Tokyo, 192-0397, Japan
| | - Yuki Nagaya
- Graduate School of Life and Environmental Science, Kyoto Prefectural University, Kyoto 606-8522, Japan
| | - Kazunori Tsubaki
- Graduate School of Life and Environmental Science, Kyoto Prefectural University, Kyoto 606-8522, Japan
| | - Takuya Shiga
- Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba 305-8577, Japan
| | - Yuuya Nagata
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Sapporo, Hokkaido 001-0021, Japan
| | - Hiroyuki Nishikawa
- Graduate School of Science and Engineering, Ibaraki University, 2-1-1 Bunkyo, Mito, Ibaraki 310-8512, Japan.
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21
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Valiev RR, Merzlikin BS, Nasibullin RT, Kurtzevitch A, Cherepanov VN, Ramazanov RR, Sundholm D, Kurtén T. Internal conversion rate constant calculations considering Duschinsky, anharmonic and Herzberg-Teller effects. Phys Chem Chem Phys 2023; 25:6406-6415. [PMID: 36779672 DOI: 10.1039/d2cp05275j] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/14/2023]
Abstract
A novel method for calculating rate constants for internal conversion (kIC) that simultaneously accounts for Duschinsky, anharmonic and Herzberg-Teller effects has been developed and implemented. This method has been applied to robust planar molecules like tetraoxa[8]circulene (4B), free-base porphyrin (H2P) and pyrometene (PM567) with small Duschinsky rotation (i.e. with almost identical normal coordinates in the ground and excited states) and to poly[n]fluorenes (P[n]F) (n = 2-14) with a substantial Duschinsky rotation. The obtained results show that the Duschinsky effect is large in the harmonic approximation, whereas it is in general much smaller in the anharmonic approximation. The Duschinsky effect is found to be large for high frequency vibrational modes with energies of ∼3300 cm-1 such as the X-H (X = C, N and O) stretching modes that mix in the S1 → S0 electronic transition. However, even in this case, the increase in kIC due to the Duschinsky effect does not exceed one order of magnitude. The calculations show that anharmonic contributions to kIC are larger than Herzberg-Teller contributions which in turn are larger than contributions from the Duschinsky effect ANH > HT > Du. We also show that an approximation, where only X-H bonds are considered in the kIC calculation, is accurate even for P[n]F (n = 2-14).
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Affiliation(s)
- R R Valiev
- University of Helsinki, Department of Chemistry, P.O. Box 55 (A.I. Virtanens plats 1), FIN-00014 University of Helsinki, Finland. .,Kazan Federal University, Republic of Tatarstan, Russia.,Tomsk State University, 36 Lenin Avenue, Tomsk 634050, Russia
| | - B S Merzlikin
- Laboratory of Applied Mathematics and Theoretical Physics, TUSUR, Lenin ave. 40, 634050 Tomsk, Russia
| | - R T Nasibullin
- Tomsk State University, 36 Lenin Avenue, Tomsk 634050, Russia
| | - A Kurtzevitch
- Tomsk State University, 36 Lenin Avenue, Tomsk 634050, Russia
| | - V N Cherepanov
- Tomsk State University, 36 Lenin Avenue, Tomsk 634050, Russia
| | - R R Ramazanov
- University of Helsinki, Department of Chemistry, P.O. Box 55 (A.I. Virtanens plats 1), FIN-00014 University of Helsinki, Finland.
| | - D Sundholm
- University of Helsinki, Department of Chemistry, P.O. Box 55 (A.I. Virtanens plats 1), FIN-00014 University of Helsinki, Finland.
| | - T Kurtén
- University of Helsinki, Department of Chemistry, P.O. Box 55 (A.I. Virtanens plats 1), FIN-00014 University of Helsinki, Finland.
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22
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Abstract
Quantum dot light-emitting diodes (QD-LEDs) are one of the most promising self-emissive displays in terms of light-emitting efficiency, wavelength tunability, and cost. Future applications using QD-LEDs can cover a range from a wide color gamut and large panel displays to augmented/virtual reality displays, wearable/flexible displays, automotive displays, and transparent displays, which demand extreme performance in terms of contrast ratio, viewing angle, response time, and power consumption. The efficiency and lifetime have been improved by tailoring the QD structures and optimizing the charge balance in charge transport layers, resulting in theoretical efficiency for unit devices. Currently, longevity and inkjet-printing fabrication of QD-LEDs are being tested for future commercialization. In this Review, we summarize significant progress in the development of QD-LEDs and describe their potential compared to other displays. Furthermore, the critical elements to determine the performance of QD-LEDs, such as emitters, hole/electron transport layers, and device structures, are discussed comprehensively, and the degradation mechanisms of the devices and the issues of the inkjet-printing process were also investigated.
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Affiliation(s)
- Eunjoo Jang
- Material Research Center, Samsung Advanced Institute of Technology, Samsung Electronics, 130 Samsung-ro, Suwon, Gyeonggi-do 16678, Republic of Korea
| | - Hyosook Jang
- Material Research Center, Samsung Advanced Institute of Technology, Samsung Electronics, 130 Samsung-ro, Suwon, Gyeonggi-do 16678, Republic of Korea
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23
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Ruduss A, Belyakov S, Stucere KA, Vembris A, Traskovskis K. Light emission mechanism in dimers of carbene-metal-amide complexes. Phys Chem Chem Phys 2023; 25:3220-3231. [PMID: 36625398 DOI: 10.1039/d2cp05237g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Recently an efficient dual electroluminescence from monomers and dimers was observed among the structural examples of the emerging emitter class of carbene-metal-amides (CMAs), allowing the preparation of simple design white organic light emitting diodes (wOLEDs). Here we investigate in detail the light emission mechanism in the dimeric species of CMA emitters on the basis of a copper(I) complex TCP bearing thiazoline carbene and 10H-phenothiazine 5,5-dioxide (Ptz) ligands. The X-ray structure for crystals with dimer-only emission was obtained, revealing that emissive aggregates consist of face-to-face stacked molecular pairs with an intermolecular distance of 3.673 Å. The close packing is aided by reduced sterical bulk at the carbene ligand, as well as by a torsional twist between the carbene and amide fragments. Experimental and computational data show that the emission mechanism in aggregates is related to the formation of a persistent dimer, not the excimer. Radiative relaxation proceeds through an intermolecular charge transfer process between the carbene and amide ligands of the neighbouring molecules. In comparison to the monomer, the thermally activated delayed fluorescence (TADF) process in the dimer is characterized with significantly higher energy gaps (ΔEST) between the lowest singlet (S1) and triplet (T1) excited states. At the same time the aggregated species exhibit a significantly increased phosphorescence rate (τ = 12 μs at 10 K temperature) due to the presence of two metal atoms, resulting in a sixfold increase in the spin-orbit coupling (SOC) matrix element in comparison to the monomer.
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Affiliation(s)
- Armands Ruduss
- Institute of Applied Chemistry, Faculty of Materials Science and Applied Chemistry, Riga Technical University, P. Valdena Str. 3, LV-1048, Riga, Latvia.
| | - Sergey Belyakov
- Latvian Institute of Organic Synthesis, Aizkraukles Str. 21, Riga LV-1006, Latvia
| | - Kitija A Stucere
- Institute of Solid State Physics, University of Latvia, Kengaraga Str. 8, LV-1063, Riga, Latvia
| | - Aivars Vembris
- Institute of Solid State Physics, University of Latvia, Kengaraga Str. 8, LV-1063, Riga, Latvia
| | - Kaspars Traskovskis
- Institute of Applied Chemistry, Faculty of Materials Science and Applied Chemistry, Riga Technical University, P. Valdena Str. 3, LV-1048, Riga, Latvia.
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24
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Yu YJ, Liu FM, Meng XY, Ding LY, Liao LS, Jiang ZQ. Carbonyl-Containing Thermally Activated Delayed Fluorescence Emitters for Narrow-Band Electroluminescence. Chemistry 2023; 29:e202202628. [PMID: 36250810 DOI: 10.1002/chem.202202628] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Indexed: 11/23/2022]
Abstract
Carbonyl-containing derivatives show enduring vitality in the field of thermally activated delayed fluorescence (TADF) materials; they can realize high device efficiency by using both singlet and triplet excitons for electroluminescence. Recently, a system based on fused ketone/amine exhibited huge potential for constructing multi-resonance TADF (MR-TADF) emitters, which exhibit higher narrow-band emission than conventional TADF emitters with twisted donor-acceptor (D-A) structure. Herein, we summarize current research progress in both traditional and MR-type ketone derivatives with TADF characteristics for introducing the molecular design strategy of maintaining high device efficiency while keeping narrow-band emission profile. We hope this review can inspire the emergence of more high-performance narrow-band materials.
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Affiliation(s)
- You-Jun Yu
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, Jiangsu, 215123, P.R. China
| | - Fu-Ming Liu
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, Jiangsu, 215123, P.R. China
| | - Xin-Yue Meng
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, Jiangsu, 215123, P.R. China
| | - Ling-Yi Ding
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, Jiangsu, 215123, P.R. China
| | - Liang-Sheng Liao
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, Jiangsu, 215123, P.R. China
| | - Zuo-Quan Jiang
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, Jiangsu, 215123, P.R. China
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25
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Liu S, Tian Y, Yan L, Wang S, Zhao L, Tian H, Ding J, Wang L. Color Tuning in Thermally Activated Delayed Fluorescence Polymers with Carbazole and Tetramethylphenylene Backbone. Macromolecules 2023. [DOI: 10.1021/acs.macromol.2c02316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Shen Liu
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
- University of Science and Technology of China, Hefei 230026, P. R. China
- School of Chemical Science and Technology, Yunnan University, Kunming 650091, P. R. China
| | - Yiting Tian
- School of Materials and Energy, Yunnan University, Kunming 650091, P. R. China
| | - Libing Yan
- School of Chemical Science and Technology, Yunnan University, Kunming 650091, P. R. China
| | - Shumeng Wang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
| | - Lei Zhao
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
| | - Hongkun Tian
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
- University of Science and Technology of China, Hefei 230026, P. R. China
| | - Junqiao Ding
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
- University of Science and Technology of China, Hefei 230026, P. R. China
- School of Chemical Science and Technology, Yunnan University, Kunming 650091, P. R. China
| | - Lixiang Wang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
- University of Science and Technology of China, Hefei 230026, P. R. China
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26
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Fujii T, Kusukawa T, Imoto H, Naka K. Pnictogen-Bridged Diphenyl Sulfones as Photoinduced Pnictogen Bond Forming Emission Motifs. Chemistry 2023; 29:e202202572. [PMID: 36125391 DOI: 10.1002/chem.202202572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Indexed: 01/04/2023]
Abstract
In this study, pnictogen (Pn)-bridged diphenyl sulfones were synthesized as motifs for photoinduced dynamic rearrangement. The newly synthesized sulfones exhibited dual fluorescence at 298 K. Density functional theory calculations revealed that the longer-wavelength fluorescence was derived from the geometries after structural relaxation through photo-driven pnictogen bond formation between the O atom lone pair of the sulfonyl moiety and the antibonding orbital of the Pn-C bond. This is the first report on emission dynamics driven by pnictogen bond formation upon photoexcitation.
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Affiliation(s)
- Toshiki Fujii
- Faculty of Molecular Chemistry and Engineering, Graduate School of Science and Technology, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan
| | - Takahiro Kusukawa
- Faculty of Molecular Chemistry and Engineering, Graduate School of Science and Technology, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan
| | - Hiroaki Imoto
- Faculty of Molecular Chemistry and Engineering, Graduate School of Science and Technology, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan
| | - Kensuke Naka
- Faculty of Molecular Chemistry and Engineering, Graduate School of Science and Technology, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan.,Materials Innovation Lab, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan
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27
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Nabihah Mohd Yusof Chan N, Idris A, Hazrin Zainal Abidin Z, Anuar Tajuddin H. White light emission from coumarin and rhodamine derivatives based on RGB multicomponent system. J Photochem Photobiol A Chem 2023. [DOI: 10.1016/j.jphotochem.2023.114577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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28
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Zhang Z, Huang Y, Bai Q, Wu T, Jiang Z, Su H, Zong Y, Wang M, Su PY, Xie TZ, Wang P. Aggregation-Induced Emission Metallocuboctahedra for White Light Devices. JACS AU 2022; 2:2809-2820. [PMID: 36590262 PMCID: PMC9795569 DOI: 10.1021/jacsau.2c00568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 11/19/2022] [Accepted: 11/22/2022] [Indexed: 06/17/2023]
Abstract
Materials for organic light-emitting devices which exhibit superior emission properties in both the solution and solid states with a high fluorescence quantum yield have been extensively sought after. Herein, two metallocages, S1 and S2, were constructed, and both showed typical aggregation-induced emission (AIE) features with intense yellow fluorescence. By adding blue-emissive 9,10-dimethylanthracene, pure white light emission can be produced in the solution of S1 and S2. Furthermore, due to the remarkable AIE feature and good fluorescence quantum yield in the solid state, metallocages are highly emissive in the solid state and can be utilized to coat blue LED bulbs or integrate with blue-emitting chips to obtain white light. This study advances the usage of metallocages as practical solid-state fluorescent materials and provides a fresh perspective on highly emissive AIE materials.
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Affiliation(s)
- Zhe Zhang
- Institute
of Environmental Research at Greater Bay Area, Key Laboratory for
Water Quality and Conservation of the Pearl River Delta, Ministry
of Education, Guangzhou University, Guangzhou 510006, China
| | - Yan Huang
- Institute
of Environmental Research at Greater Bay Area, Key Laboratory for
Water Quality and Conservation of the Pearl River Delta, Ministry
of Education, Guangzhou University, Guangzhou 510006, China
| | - Qixia Bai
- Institute
of Environmental Research at Greater Bay Area, Key Laboratory for
Water Quality and Conservation of the Pearl River Delta, Ministry
of Education, Guangzhou University, Guangzhou 510006, China
| | - Tun Wu
- Institute
of Environmental Research at Greater Bay Area, Key Laboratory for
Water Quality and Conservation of the Pearl River Delta, Ministry
of Education, Guangzhou University, Guangzhou 510006, China
| | - Zhiyuan Jiang
- Hunan
Key Laboratory of Micro & Nano Materials Interface Science; College
of Chemistry and Chemical Engineering, Central
South University, Changsha 410083, China
| | - Haoyue Su
- State
Key Laboratory of Supramolecular Structure and Materials, College
of Chemistry, Jilin University, Changchun, Jilin 130012, China
| | - Yingxin Zong
- Institute
of Environmental Research at Greater Bay Area, Key Laboratory for
Water Quality and Conservation of the Pearl River Delta, Ministry
of Education, Guangzhou University, Guangzhou 510006, China
| | - Ming Wang
- State
Key Laboratory of Supramolecular Structure and Materials, College
of Chemistry, Jilin University, Changchun, Jilin 130012, China
| | - Pei-Yang Su
- Institute
of Environmental Research at Greater Bay Area, Key Laboratory for
Water Quality and Conservation of the Pearl River Delta, Ministry
of Education, Guangzhou University, Guangzhou 510006, China
| | - Ting-Zheng Xie
- Institute
of Environmental Research at Greater Bay Area, Key Laboratory for
Water Quality and Conservation of the Pearl River Delta, Ministry
of Education, Guangzhou University, Guangzhou 510006, China
| | - Pingshan Wang
- Institute
of Environmental Research at Greater Bay Area, Key Laboratory for
Water Quality and Conservation of the Pearl River Delta, Ministry
of Education, Guangzhou University, Guangzhou 510006, China
- Hunan
Key Laboratory of Micro & Nano Materials Interface Science; College
of Chemistry and Chemical Engineering, Central
South University, Changsha 410083, China
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29
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Raichure PC, Kachwal V, Sengottuvelu D, Laskar IR. Achieving Single-Component Solid-State White-Light Emission through Polymerization-Induced Phosphorescent Emission. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c01688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Affiliation(s)
- Pramod C. Raichure
- Department of Chemistry, Birla Institute of Technology and Science, Pilani Campus, Pilani, Rajasthan 333031, India
| | - Vishal Kachwal
- Department of Chemistry, Birla Institute of Technology and Science, Pilani Campus, Pilani, Rajasthan 333031, India
- Department of Engineering Science, University of Oxford, Oxford OX1 3PJ, United Kingdom
| | - Dineshkumar Sengottuvelu
- Department of Chemistry, Birla Institute of Technology and Science, Pilani Campus, Pilani, Rajasthan 333031, India
- Center for Graphene Research and Innovation, C06 Jackson Avenue Center, University of Mississippi, University, Mississippi 38677, United States
| | - Inamur Rahaman Laskar
- Department of Chemistry, Birla Institute of Technology and Science, Pilani Campus, Pilani, Rajasthan 333031, India
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30
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Au(I)-BSA nanocomposites with assembling-induced excitation-dependent multicolor emission for dynamic cell imaging. Sci China Chem 2022. [DOI: 10.1007/s11426-022-1405-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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31
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Sun Y, Liu J, Wang B, Hou S, Zhang Y, Fu G, Lü X. Straightforward and high-performance white-light of an isostructurally organo-(Gd3+,Tb3+,Sm3+)-ternary blending through typical trichromatic integration. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.110021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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32
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Yang X, Zhou X, Zhang Y, Li D, Li C, You C, Chou T, Su S, Chou P, Chi Y. Blue Phosphorescence and Hyperluminescence Generated from Imidazo[4,5-b]pyridin-2-ylidene-Based Iridium(III) Phosphors. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2201150. [PMID: 35822668 PMCID: PMC9443441 DOI: 10.1002/advs.202201150] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 06/02/2022] [Indexed: 05/19/2023]
Abstract
Four isomeric, homoleptic iridium(III) metal complexes bearing 5-(trifluoromethyl)imidazo[4,5-b]pyridin-2-ylidene and 6-(trifluoromethyl)imidazo[4,5-b]pyridin-2-ylidene-based cyclometalating chelates are successfully synthesized. The meridional isomers can be converted to facial isomers through acid induced isomerization. The m-isomers display a relatively broadened and red-shifted emission, while f-isomers exhibit narrowed blue emission band, together with higher photoluminescent quantum yields and reduced radiative lifetime relative to the mer-counterparts. Maximum external quantum efficiencies of 13.5% and 22.8% are achieved for the electrophosphorescent devices based on f-tpb1 and m-tpb1 as dopant emitter together with CIE coordinates of (0.15, 0.23) and (0.22, 0.45), respectively. By using f-tpb1 as the sensitizing phosphor and t-DABNA as thermally activated delayed fluorescence (TADF) terminal emitter, hyperluminescent OLEDs are successfully fabricated, giving high efficiency of 29.6%, full width at half maximum (FWHM) of 30 nm, and CIE coordinates of (0.13, 0.11), confirming the efficient Förster resonance energy transfer (FRET) process.
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Affiliation(s)
- Xilin Yang
- State Key Laboratory of Luminescent Materials and Devices and Institute of Polymer Optoelectronic Materials and DevicesSouth China University of TechnologyGuangzhou510640China
| | - Xiuwen Zhou
- School of Mathematics and PhysicsThe University of QueenslandBrisbaneQueensland4072Australia
| | - Ye‐Xin Zhang
- Suzhou Joysun Advanced Materials Co., Ltd. SuzhouJiangsu215126China
| | - Deli Li
- State Key Laboratory of Luminescent Materials and Devices and Institute of Polymer Optoelectronic Materials and DevicesSouth China University of TechnologyGuangzhou510640China
| | - Chensen Li
- Department of ChemistryDepartment of Materials Sciences and Engineeringand Center of Super‐Diamond and Advanced Films (COSDAF)City University of Hong KongHong Kong SAR999077China
| | - Caifa You
- Department of ChemistryDepartment of Materials Sciences and Engineeringand Center of Super‐Diamond and Advanced Films (COSDAF)City University of Hong KongHong Kong SAR999077China
| | - Tai‐Che Chou
- Department of ChemistryNational Taiwan UniversityTaipei10617Taiwan
| | - Shi‐Jian Su
- State Key Laboratory of Luminescent Materials and Devices and Institute of Polymer Optoelectronic Materials and DevicesSouth China University of TechnologyGuangzhou510640China
| | - Pi‐Tai Chou
- Department of ChemistryNational Taiwan UniversityTaipei10617Taiwan
| | - Yun Chi
- Department of ChemistryDepartment of Materials Sciences and Engineeringand Center of Super‐Diamond and Advanced Films (COSDAF)City University of Hong KongHong Kong SAR999077China
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33
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Han H, Hu S, Zhang S, Li X, Sun H, Chen J, Liu B, Liu C, Chen W, Zhang Q. Achieving Solution‐Processed Non‐Doped Single‐Emitting‐Layer White Organic Light‐Emitting Diodes through Adjusting Pyrene‐Based Polyaromatic Hydrocarbon. Chemistry 2022; 28:e202201741. [DOI: 10.1002/chem.202201741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Indexed: 11/07/2022]
Affiliation(s)
- Hongjing Han
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology & Institute of Electronic Paper Displays South China Academy of Advanced Optoelectronics South China Normal University Guangzhou 510006 P. R. China
| | - Sujuan Hu
- School of Electronics and Information Technology Sun Yat-sen University Guangzhou 510275 P. R. China
| | - Shilong Zhang
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology & Institute of Electronic Paper Displays South China Academy of Advanced Optoelectronics South China Normal University Guangzhou 510006 P. R. China
| | - Xiaojun Li
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology & Institute of Electronic Paper Displays South China Academy of Advanced Optoelectronics South China Normal University Guangzhou 510006 P. R. China
| | - Hailing Sun
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology & Institute of Electronic Paper Displays South China Academy of Advanced Optoelectronics South China Normal University Guangzhou 510006 P. R. China
| | - Jiawen Chen
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology & Institute of Electronic Paper Displays South China Academy of Advanced Optoelectronics South China Normal University Guangzhou 510006 P. R. China
| | - Baiquan Liu
- School of Electronics and Information Technology Sun Yat-sen University Guangzhou 510275 P. R. China
| | - Chuan Liu
- School of Electronics and Information Technology Sun Yat-sen University Guangzhou 510275 P. R. China
| | - Wangqiao Chen
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology & Institute of Electronic Paper Displays South China Academy of Advanced Optoelectronics South China Normal University Guangzhou 510006 P. R. China
| | - Qichun Zhang
- Department of Materials Science and Engineering City University of Hong Kong Hong Kong 999077 P. R. China
- Center of Super-Diamond and Advanced Films (COSDAF) City University of Hong Kong Hong Kong SAR 999077 P. R. China
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34
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Mori T, Sekine K, Kawashima K, Mori T, Kuninobu Y. Near‐Infrared and Dual Emissions of Diphenylamino Group‐Substituted Malachite Green Derivatives. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Toshiaki Mori
- Kyushu University: Kyushu Daigaku Interdisciplinary Graduate School of Engineering Sciences JAPAN
| | - Kohei Sekine
- Kyushu University: Kyushu Daigaku Institute for Materials Chemistry and Engineering JAPAN
| | - Kyohei Kawashima
- Kyushu University: Kyushu Daigaku Institute for Materials Chemistry and Engineering JAPAN
| | - Toshifumi Mori
- Kyushu University: Kyushu Daigaku Institute for Materials Chemistry and Engineering JAPAN
| | - Yoichiro Kuninobu
- Kyushu University Institute for Materials Chemistry and Engineering 6-1 Kasugakoen, Kasuga-shi 816-8580 Fukuoka JAPAN
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35
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Psalti AE, Andriotou D, Diamantis SA, Chatz-Giachia A, Pournara A, Manos MJ, Hatzidimitriou A, Lazarides T. Mixed-Metal and Mixed-Ligand Lanthanide Metal-Organic Frameworks Based on 2,6-Naphthalenedicarboxylate: Thermally Activated Sensitization and White-Light Emission. Inorg Chem 2022; 61:11959-11972. [PMID: 35861587 DOI: 10.1021/acs.inorgchem.2c01703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Trivalent lanthanide ions (Ln3+) hold an exceptional position in the field of optoelectronic materials due to their atomic-like emission spectra and long luminescence lifetimes. Metal-organic frameworks (MOFs) and coordination polymers are particularly suited as luminescent materials due to their structural diversity and ease of functionalization both at bridging ligands and/or metal centers. In this contribution, we present a series of mixed-metal Ln3+/Eu3+ (Ln = La, Gd) and mixed-ligand (2,6-naphthalenedicarboxylate (ndc2-) and 4-aminonaphthalene-2,6-dicarboxylate (andc2-)) MOFs belonging to three different structural types, with emissions spanning most of the visible region, thereby constituting favorable materials for color tuning and white-light emission. We investigate the thermal stability and photophysical properties of the synthesized materials with regard to their metal and ligand doping levels and structural type, where we discuss excimer and monomer emission. The photophysical study, involving both steady-state and time-resolved luminescence measurements, allows us to discuss the possible energy migration and Eu3+ sensitization pathways that take place within these materials following ligand excitation. Low-temperature luminescence studies led us to determine the energies of the ligand-based excited states and investigate their participation in thermally activated energy transfer mechanisms within the studied lattices. We observe emission quantum yields of up to 87% for the Eu3+-doped materials, while their ligand- and metal-doped counterparts show decreased quantum yields of up to 17%. Finally, we attempt fine color tuning by carefully adjusting the doping levels to achieve yellow and white-light emission.
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Affiliation(s)
- Athanasia E Psalti
- Department of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Despoina Andriotou
- Department of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Stavros A Diamantis
- Department of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Amina Chatz-Giachia
- Department of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | | | - Manolis J Manos
- Department of Chemistry, University of Ioannina, 45110 Ioannina, Greece.,Institute of Materials Science and Computing, University Research Center of Ioannina, 45110 Ioannina, Greece
| | | | - Theodore Lazarides
- Department of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
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36
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Artem'ev AV, Davydova MP, Berezin AS, Samsonenko DG, Bagryanskaya IY, Brel VK, Hei X, Brylev KA, Artyushin OI, Zelenkov LE, Shishkin II, Li J. New Approach toward Dual-Emissive Organic-Inorganic Hybrids by Integrating Mn(II) and Cu(I) Emission Centers in Ionic Crystals. ACS APPLIED MATERIALS & INTERFACES 2022; 14:31000-31009. [PMID: 35758694 DOI: 10.1021/acsami.2c06438] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Inorganic-organic hybrid luminescent materials have received great attention for their potential applications in a wide range of clean/renewable energy-related areas, including photovoltaics and solid-state lighting. Herein, we present a unique and general "Mn + Cu" approach by blending two earth-abundant luminogenic metals, manganese and copper, within a single ionic structure to construct a remarkable family of low-cost and multifunctional hybrid materials featuring dual emission, as well as triboluminescence and second-harmonic generation response. The novel hybrid materials are made of diphosphine dioxide-chelated [Mn(O∧O)3]2+ cations and various anionic [CuxIy](y-x)- clusters, ensuring manifestation of dual phosphorescence streamed from octahedral Mn2+ ions (605-648 nm) and iodocuprate anions (480-728 nm). Noteworthily, the relative ratio of the emission bands, and hence a resulting emission chromaticity, can be tuned in a wide range through modification of cluster [CuxIy](y-x)- modules. The structural diversity, enhanced robustness, and up to 100% luminescence quantum yield make the designed materials promising phosphors for lighting and sensing applications.
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Affiliation(s)
- Alexander V Artem'ev
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of Russian Academy of Sciences, 3, Acad. Lavrentiev Ave., 630090 Novosibirsk, Russian Federation
| | - Maria P Davydova
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of Russian Academy of Sciences, 3, Acad. Lavrentiev Ave., 630090 Novosibirsk, Russian Federation
| | - Alexey S Berezin
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of Russian Academy of Sciences, 3, Acad. Lavrentiev Ave., 630090 Novosibirsk, Russian Federation
| | - Denis G Samsonenko
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of Russian Academy of Sciences, 3, Acad. Lavrentiev Ave., 630090 Novosibirsk, Russian Federation
| | - Irina Yu Bagryanskaya
- N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Branch of Russian Academy of Sciences, 9, Acad. Lavrentiev Ave., Novosibirsk 630090, Russian Federation
| | - Valery K Brel
- A. N. Nesmeyanov Institute of Organoelement Compounds, RAS, 28, Vavilova Str., Moscow 119991, Russian Federation
| | - Xiuze Hei
- Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, New Jersey 08854, United States
| | - Konstantin A Brylev
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of Russian Academy of Sciences, 3, Acad. Lavrentiev Ave., 630090 Novosibirsk, Russian Federation
| | - Oleg I Artyushin
- A. N. Nesmeyanov Institute of Organoelement Compounds, RAS, 28, Vavilova Str., Moscow 119991, Russian Federation
| | - Lev E Zelenkov
- ITMO University, Lomonosova Str. 9, 197101 St. Petersburg, Russian Federation
| | - Ivan I Shishkin
- ITMO University, Lomonosova Str. 9, 197101 St. Petersburg, Russian Federation
| | - Jing Li
- Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, New Jersey 08854, United States
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37
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Secondary through-space interactions facilitated single-molecule white-light emission from clusteroluminogens. Nat Commun 2022; 13:3492. [PMID: 35715394 PMCID: PMC9205862 DOI: 10.1038/s41467-022-31184-9] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Accepted: 06/07/2022] [Indexed: 02/06/2023] Open
Abstract
Clusteroluminogens refer to some non-conjugated molecules that show visible light and unique electronic properties with through-space interactions due to the formation of aggregates. Although mature and systematic theories of molecular photophysics have been developed to study conventional conjugated chromophores, it is still challenging to endow clusteroluminogens with designed photophysical properties by manipulating through-space interactions. Herein, three clusteroluminogens with non-conjugated donor-acceptor structures and different halide substituents are designed and synthesized. These compounds show multiple emissions and even single-molecule white-light emission in the crystalline state. The intensity ratio of these emissions is easily manipulated by changing the halide atom and excitation wavelength. Experimental and theoretical results successfully disclose the electronic nature of these multiple emissions: through-space conjugation for short-wavelength fluorescence, through-space charge transfer based on secondary through-space interactions for long-wavelength fluorescence, and room-temperature phosphorescence. The introduction of secondary through-space interactions to clusteroluminogens not only enriches their varieties of photophysical properties but also inspires the establishment of novel aggregate photophysics for clusteroluminescence. Although mature and systematic theories of molecular photophysics have been developed, it is still challenging to endow clusteroluminogens (CLgens) with designed photophysical properties by manipulating through-space interactions. Here, the authors design three CLgens that show multiple emissions and white-light emission in the crystalline state, and emphasize the important role of secondary through-space interactions between the acceptor and non-conjugated donor units.
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38
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Vinogradova KA, Rakhmanova MI, Nikolaenkova EB, Krivopalov VP, Bushuev MB, Pervukhina NV, Naumov DY, Martynova SA. Synthesis, Structure, and Photoluminescence of Zinc(II) and Silver(I) Complexes with 2-(3,5-Dimethyl-1H-pyrazol-1-yl)-4,6-Diphenylpyrimidine. RUSS J COORD CHEM+ 2022. [DOI: 10.1134/s1070328422050098] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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39
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Li Q, Wu Y, Cao J, Liu Y, Wang Z, Zhu H, Zhang H, Huang F. Pillararene-Induced Intramolecular Through-Space Charge Transfer and Single-Molecule White-Light Emission. Angew Chem Int Ed Engl 2022; 61:e202202381. [PMID: 35234348 DOI: 10.1002/anie.202202381] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Indexed: 12/15/2022]
Abstract
The fabrication of single-molecule white-light emission (SMWLE) materials has become a highly studied topic in recent years and through-space charge transfer (TSCT) is emerging as an important concept in this field. However, the preparation of ideal TSCT-based SMWLE materials is still a big challenge. Herein, we report a bifunctional pillar[5]arene (TPCN-P5-TPA) with a linear donor-spacer-acceptor structure and aggregation-induced emission (AIE) property. The bulky pillar[5]arene between the donor and acceptor induces a twisted conformation and a non-conjugated structure, resulting in intramolecular TSCT. In addition, the AIE feature and pillar[5]arene cavity endow TPCN-P5-TPA with responsiveness to viscosity and polar guests, by which the TSCT emission is triggered. The combination of blue locally-excited state emission and yellow TSCT emission of TPCN-P5-TPA generates SMWLE. Therefore, we provide a new and versatile strategy for the construction of TSCT-based SMWLE materials.
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Affiliation(s)
- Qi Li
- State Key Laboratory of Chemical Engineering, Stoddart Institute of Molecular Science, Department of Chemistry, Zhejiang University, Hangzhou, 310027, China
| | - Yitao Wu
- State Key Laboratory of Chemical Engineering, Stoddart Institute of Molecular Science, Department of Chemistry, Zhejiang University, Hangzhou, 310027, China
| | - Jiajun Cao
- State Key Laboratory of Chemical Engineering, Stoddart Institute of Molecular Science, Department of Chemistry, Zhejiang University, Hangzhou, 310027, China
| | - Yang Liu
- State Key Laboratory of Chemical Engineering, Stoddart Institute of Molecular Science, Department of Chemistry, Zhejiang University, Hangzhou, 310027, China
| | - Zeju Wang
- State Key Laboratory of Chemical Engineering, Stoddart Institute of Molecular Science, Department of Chemistry, Zhejiang University, Hangzhou, 310027, China
| | - Huangtianzhi Zhu
- State Key Laboratory of Chemical Engineering, Stoddart Institute of Molecular Science, Department of Chemistry, Zhejiang University, Hangzhou, 310027, China
| | - Haoke Zhang
- ZJU-Hangzhou Global Scientific and Technological Innovation Center, Hangzhou, 311215, China.,MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China.,Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates, South China University of Technology, Guangzhou, 510640, China
| | - Feihe Huang
- State Key Laboratory of Chemical Engineering, Stoddart Institute of Molecular Science, Department of Chemistry, Zhejiang University, Hangzhou, 310027, China.,ZJU-Hangzhou Global Scientific and Technological Innovation Center, Hangzhou, 311215, China.,Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou, 450001, China
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40
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Yang H, Liu H, Shen Y, Zhang ST, Zhang Q, Song Q, Lv C, Zhang C, Yang B, Ma Y, Zhang Y. Multicolour Fluorescence Based on Excitation-Dependent Electron Transfer Processes in o-Carborane Dyads. Angew Chem Int Ed Engl 2022; 61:e202115551. [PMID: 34989081 DOI: 10.1002/anie.202115551] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Indexed: 11/11/2022]
Abstract
Organic materials with excitation wavelength-dependent (Ex-de) emission are highly attractive for anticounterfeiting, optoelectronics and bioassay applications; however, the realization of Ex-de fluorescence, independent of aggregation states, remains a challenge. We herein report a photoinduced electron transfer (PeT) strategy to design Ex-de fluorescence materials by manipulating the relaxation pathways of multiple excited states. As expected, the o-carborane dyad presents a clear Ex-de fluorescence colour in the aggregated states, resulting from the tunable relative intensity of the dual-fluorescence spectra. Taking TP[1]B as an example, the amorphous powders emitted bright blue-violet, white and yellow colours under 390 nm, 365 nm and 254 nm UV illumination, respectively. Importantly, multicolour, flexible and transparent films as well as an anticounterfeiting application using this o-carborane dyad are demonstrated.
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Affiliation(s)
- Heyi Yang
- Department of Materials Chemistry, Huzhou University, East 2nd Ring Road. No. 759, Huzhou, 313000, P. R. China.,College of Chemical Engineering, Zhejiang University of Technology, Chaowang Road. NO. 18, Hangzhou, 310014, P. R. China
| | - Haichao Liu
- State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun, 130012, P. R. China
| | - Yunxia Shen
- College of Chemical Engineering, Zhejiang University of Technology, Chaowang Road. NO. 18, Hangzhou, 310014, P. R. China
| | - Shi-Tong Zhang
- State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun, 130012, P. R. China
| | - Qing Zhang
- Department of Materials Chemistry, Huzhou University, East 2nd Ring Road. No. 759, Huzhou, 313000, P. R. China
| | - Qingbao Song
- College of Chemical Engineering, Zhejiang University of Technology, Chaowang Road. NO. 18, Hangzhou, 310014, P. R. China
| | - Chunyan Lv
- Department of Materials Chemistry, Huzhou University, East 2nd Ring Road. No. 759, Huzhou, 313000, P. R. China
| | - Cheng Zhang
- College of Chemical Engineering, Zhejiang University of Technology, Chaowang Road. NO. 18, Hangzhou, 310014, P. R. China
| | - Bing Yang
- State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun, 130012, P. R. China
| | - Yuguang Ma
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou, Guangdong, P. R. China
| | - Yujian Zhang
- Department of Materials Chemistry, Huzhou University, East 2nd Ring Road. No. 759, Huzhou, 313000, P. R. China
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41
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Ochi J, Yuhara K, Tanaka K, Chujo Y. Controlling the Dual-Emission Character of Aryl-Modified o-Carboranes by Intramolecular CH⋅⋅⋅O Interaction Sites. Chemistry 2022; 28:e202200155. [PMID: 35170101 DOI: 10.1002/chem.202200155] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Indexed: 01/18/2023]
Abstract
It is still challenging to realize a dual-emission system, in which two luminescent bands simultaneously appear by photoexcitation, in solid with organic dyes due to the difficulty in regulation of electronic properties in the excited state and concentration quenching. o-Carborane is known to be a versatile platform for constructing solid-state emitters since the sphere boron cluster is favorable for suppressing intermolecular interactions and subsequently concentration quenching. Here, we show solid-state dual-emissive o-carborane derivatives. We prepared 4 types of o-carborane derivatives and found dual-emission behaviors both in solution and solid states. By regulating the rotation at the o-carborane unit with the intramolecular Ccage H⋅⋅⋅O interaction, the dual-emission intensity ratios were changed. Finally, it was demonstrated that the overall photoluminescence spectra can be estimated using the binding energy of intramolecular interactions.
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Affiliation(s)
- Junki Ochi
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University Katsura, Nishikyo-ku, Kyoto, 615-8510, Japan
| | - Kazuhiro Yuhara
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University Katsura, Nishikyo-ku, Kyoto, 615-8510, Japan
| | - Kazuo Tanaka
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University Katsura, Nishikyo-ku, Kyoto, 615-8510, Japan
| | - Yoshiki Chujo
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University Katsura, Nishikyo-ku, Kyoto, 615-8510, Japan
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42
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Multiple yet switchable hydrogen-bonded organic frameworks with white-light emission. Nat Commun 2022; 13:1882. [PMID: 35388019 PMCID: PMC8987099 DOI: 10.1038/s41467-022-29565-1] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Accepted: 03/17/2022] [Indexed: 12/22/2022] Open
Abstract
The development of new strategies to construct on-demand porous lattice frameworks from simple motifs is desirable. However, mitigating complexity while combing multiplicity and reversibility in the porous architectures is a challenging task. Herein, based on the synergy of dynamic intermolecular interactions and flexible molecular conformation of a simple cyano-modified tetraphenylethylene tecton, eleven kinetic-stable hydrogen-bonded organic frameworks (HOFs) with various shapes and two thermo-stable non-porous structures with rare perpendicular conformation are obtained. Multimode reversible structural transformations along with visible fluorescence output between porous and non-porous or between different porous forms is realized under different external stimuli. Furthermore, the collaborative of flexible framework and soft long-chain guests facilitate the relaxation from intrinsic blue emission to yellow emission in the excited state, which represents a strategy for generating white-light emission. The dynamic intermolecular interactions, facilitated by flexible molecular conformation and soft guests, diversifies the strategies of construction of versatile smart molecular frameworks. Switchable hydrogen-bonded frameworks have potential applications in the development of smart materials. Herein, the authors report eleven hydrogen-bonded organic frameworks and two non-porous structures that can undergo reversible structural and fluorescence switching; white-light emission is enabled.
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43
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Hwang YH, Noh B, Lee J, Lee HS, Park Y, Choi KC. High-Performance and Reliable White Organic Light-Emitting Fibers for Truly Wearable Textile Displays. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2104855. [PMID: 35072356 PMCID: PMC9008425 DOI: 10.1002/advs.202104855] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Revised: 01/13/2022] [Indexed: 06/14/2023]
Abstract
Light-emitting fibers have been intensively developed for the realization of textile displays and various lighting applications, as promising free-form electronics with outstanding interconnectivity. These advances in the fiber displays have been made possible by the successful implementation of the core technologies of conventional displays, including high optoelectronic performance and essential elements, in the fiber form-factor. However, although white organic light-emitting diodes (WOLEDs), as a fundamental core technology of displays, are essential for realizing full-color displays and solid-state lighting, fiber-based WOLEDs are still challenging due to structural issues and the lack of approaches to implementing WOLEDs on fiber. Herein, the first fiber WOLED is reported, exhibiting high optoelectronic performance and a reliable color index, comparable to those of conventional planar WOLEDs. As key features, it is found that WOLEDs can be successfully introduced on a cylindrical fiber using a dip-coatable single white-emission layer based on simulation and optimization of the white spectra. Furthermore, to ensure durability from usage, the fiber WOLED is encapsulated by an Al2 O3 /elastomer bilayer, showing stable operation under repetitive bending and pressure, and in water. This pioneering work is believed to provide building blocks for realizing complete textile display technologies by complementing the lack of the core technology.
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Affiliation(s)
- Yong Ha Hwang
- School of Electrical EngineeringKorea Advanced Institute of Science and TechnologyDaejeon34141Republic of Korea
| | - Byeongju Noh
- School of Electrical EngineeringKorea Advanced Institute of Science and TechnologyDaejeon34141Republic of Korea
| | - Junwoo Lee
- School of Electrical EngineeringKorea Advanced Institute of Science and TechnologyDaejeon34141Republic of Korea
| | - Ho Seung Lee
- School of Electrical EngineeringKorea Advanced Institute of Science and TechnologyDaejeon34141Republic of Korea
| | - Yongjin Park
- School of Electrical EngineeringKorea Advanced Institute of Science and TechnologyDaejeon34141Republic of Korea
| | - Kyung Cheol Choi
- School of Electrical EngineeringKorea Advanced Institute of Science and TechnologyDaejeon34141Republic of Korea
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44
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Wu P, Zhou L, Zhen Z, Xia S, Yu L. Doped organic charge-transfer cocrystal with tunable fluorescence of wide band emission. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2021.113727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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45
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Li Q, Wu Y, Cao J, Liu Y, Wang Z, Zhu H, Zhang H, Huang F. Pillararene‐Induced Intramolecular Through‐Space Charge Transfer and Single‐Molecule White‐Light Emission. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202202381] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Qi Li
- State Key Laboratory of Chemical Engineering Stoddart Institute of Molecular Science Department of Chemistry Zhejiang University Hangzhou 310027 China
| | - Yitao Wu
- State Key Laboratory of Chemical Engineering Stoddart Institute of Molecular Science Department of Chemistry Zhejiang University Hangzhou 310027 China
| | - Jiajun Cao
- State Key Laboratory of Chemical Engineering Stoddart Institute of Molecular Science Department of Chemistry Zhejiang University Hangzhou 310027 China
| | - Yang Liu
- State Key Laboratory of Chemical Engineering Stoddart Institute of Molecular Science Department of Chemistry Zhejiang University Hangzhou 310027 China
| | - Zeju Wang
- State Key Laboratory of Chemical Engineering Stoddart Institute of Molecular Science Department of Chemistry Zhejiang University Hangzhou 310027 China
| | - Huangtianzhi Zhu
- State Key Laboratory of Chemical Engineering Stoddart Institute of Molecular Science Department of Chemistry Zhejiang University Hangzhou 310027 China
| | - Haoke Zhang
- ZJU-Hangzhou Global Scientific and Technological Innovation Center Hangzhou 311215 China
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and Engineering Zhejiang University Hangzhou 310027 China
- Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates South China University of Technology Guangzhou 510640 China
| | - Feihe Huang
- State Key Laboratory of Chemical Engineering Stoddart Institute of Molecular Science Department of Chemistry Zhejiang University Hangzhou 310027 China
- ZJU-Hangzhou Global Scientific and Technological Innovation Center Hangzhou 311215 China
- Green Catalysis Center and College of Chemistry Zhengzhou University Zhengzhou 450001 China
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46
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Tarai M, Singh A, Pati AK, Mishra AK. Resolving fluorescence signatures of a photoconvertible fluorophore by fluorescence spectroscopy and MCR-ALS-based combinatorial approach. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 268:120683. [PMID: 34920288 DOI: 10.1016/j.saa.2021.120683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 11/22/2021] [Accepted: 11/26/2021] [Indexed: 06/14/2023]
Abstract
Photoconvertible fluorophores are important for a myriad of applications in chemistry and biology. Here, we spectrally resolve and quantify individual photophysical information of a dual-emitting photoconvertible fluorophore by fluorescence spectroscopy and multivariate curve resolution-alternate least square techniques. We found that the reactant fluorophore, which shows a weak locally excited (LE) emission and a dominant intramolecular charge transfer (ICT) emission, also exhibits an intermolecular charge transfer emission. The ICT emission bands of both the reactant and product fluorophores are originated from their respective LE states. The reactant fluorophore is a mixture of its different ground state conformers. Higher yields of photoconversion of the yellow-emitting reactant fluorophore are achieved via a visible light photoreaction, leading to formation of pure white light at an intermediate photoreaction time. These findings together help us to glean new photophysical and photochemical insights into the photoreaction of a dual-emitting photoconvertible fluorophore.
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Affiliation(s)
- Madhumita Tarai
- MIT School of Bioengineering Sciences & Research, MIT ADT University, Loni Kalbhor, Maharashtra 412201, India; Indian Institute of Technology Madras, Chennai 600036, India.
| | - Anuja Singh
- Indian Institute of Technology Madras, Chennai 600036, India
| | - Avik Kumar Pati
- Indian Institute of Technology Madras, Chennai 600036, India
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47
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Wen LL, Zang CX, Gao Y, Li GF, Shan GG, Wang XL, Shao KZ, Xie WF, Su ZM. Rational Design of Ir(III) Phosphors to Strategically Manage Charge Recombination for High-Performance White Organic Light-Emitting Diodes. Inorg Chem 2022; 61:3736-3745. [PMID: 35175759 DOI: 10.1021/acs.inorgchem.1c03897] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Constructing high-quality white organic light-emitting diodes (WOLEDs) remains a big challenge because of high demands on the electroluminescence (EL) performance including high efficiency, excellent spectral stability, and low roll-off simultaneously. To achieve effective energy transfer and trap-assisted recombination in the emissive layer, herein, four Ir(III) phosphors, namely, mOMe-Ir-PI (1), pOMe-Ir-PI (2), mOMe-Ir-PB (3), and pOMe-Ir-PB (4), were strategically designed via simple regulation of the substituent moiety and π conjugation of the chelated ligands. Their photophysical and EL properties were systematically investigated. When these phosphors are employed as doped emitters, the monochromic green organic light-emitting diodes not only exhibit a superior performance with the characteristics of 50.2 cd A-1, 39.2 lm W-1, and 15.1%, but also maintain a negligible roll-off ratio of 0.2% at 1000 cd m-2, which are better than those of commercial green Ir(ppy)2acac and Ir(ppy)3 in the same device configuration. Inspired by these outstanding performances, we successfully fabricated the warm WOLED utilizing 2 as a green component, affording a peak efficiency of 42.0 cd A-1, 29.3 lm W-1, and 18.6% and retaining at 39.9 cd A-1, 23.7 lm W-1, and 17.4% even at 1000 cd m-2. The results herein demonstrate the superiority of the molecular design and propose a simple method toward the development of promising Ir(III) phosphors for high-efficiency WOLEDs.
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Affiliation(s)
- Li-Li Wen
- Institute of Functional Material Chemistry and National and Local United Engineering Laboratory for Power Battery, Faculty of Chemistry, Northeast Normal University, Changchun 130024, P. R. China.,School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun 130022, P. R. China
| | - Chun-Xiu Zang
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, Jilin 130012, P. R. China
| | - Ying Gao
- Institute of Functional Material Chemistry and National and Local United Engineering Laboratory for Power Battery, Faculty of Chemistry, Northeast Normal University, Changchun 130024, P. R. China
| | - Guang-Fu Li
- Institute of Functional Material Chemistry and National and Local United Engineering Laboratory for Power Battery, Faculty of Chemistry, Northeast Normal University, Changchun 130024, P. R. China
| | - Guo-Gang Shan
- Institute of Functional Material Chemistry and National and Local United Engineering Laboratory for Power Battery, Faculty of Chemistry, Northeast Normal University, Changchun 130024, P. R. China.,School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun 130022, P. R. China
| | - Xin-Long Wang
- Institute of Functional Material Chemistry and National and Local United Engineering Laboratory for Power Battery, Faculty of Chemistry, Northeast Normal University, Changchun 130024, P. R. China
| | - Kui-Zhan Shao
- Institute of Functional Material Chemistry and National and Local United Engineering Laboratory for Power Battery, Faculty of Chemistry, Northeast Normal University, Changchun 130024, P. R. China
| | - Wen-Fa Xie
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, Jilin 130012, P. R. China
| | - Zhong-Min Su
- Institute of Functional Material Chemistry and National and Local United Engineering Laboratory for Power Battery, Faculty of Chemistry, Northeast Normal University, Changchun 130024, P. R. China.,School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun 130022, P. R. China
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48
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Panahi F, Mahmoodi A, Ghodrati S, Abdi AA, Eshghi F. New white light-emitting halochromic stilbenes with remarkable quantum yields and aggregation-induced emission. Sci Rep 2022; 12:2385. [PMID: 35149741 PMCID: PMC8837803 DOI: 10.1038/s41598-022-06435-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Accepted: 01/31/2022] [Indexed: 12/21/2022] Open
Abstract
Highly efficient single-component white light emitters (SWLEs), are attractive candidates for the simple and cost-effective fabrication of high-performance lighting devices. This study introduced a donor–π–acceptor and a donor–π–donor stilbene-based chromophores, representing pH-responsive fluorescence. The emitters showed yellow and green fluorescence in their neutral form. At the same time, protonation of the chromophores caused blue fluorescence color with a strong hypsochromic shift. The white light emission (WLE) for these chromophores was observed at approximately pH 3 due to the simultaneous presence of the neutral and protonated forms of the chromophores, covering almost all the emission spectra in the visible region (400–700 nm). These chromophores presented exceptional white light quantum yields (Φ) between 31 and 54%, which was desirable for producing white light-emitting devices. Density functional theory (DFT) and time-dependent (TD)-DFT were applied to study the structural and electronic properties of the chromophores.
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Affiliation(s)
- Farhad Panahi
- Chemistry Department, College of Sciences, Shiraz University, 71454, Shiraz, Iran.
| | - Ali Mahmoodi
- Department of Polymer Engineering and Color Technology, Amirkabir University of Technology, Tehran, Iran
| | - Sajjad Ghodrati
- Department of Polymer Engineering and Color Technology, Amirkabir University of Technology, Tehran, Iran
| | - Ali Ashtiani Abdi
- Department of Organic Colorants, Institute for Color Science and Technology, Tehran, Iran
| | - Fazlolah Eshghi
- Chemistry Department, College of Sciences, Shiraz University, 71454, Shiraz, Iran
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49
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Xiong W, He K, Zhang D, Yang J, Peng M, Niu Z, Li G, Zhu W. Synthesis and optoelectronic properties of a dinuclear iridium (III) complex containing a picolinic acid derivative by nonconjugated linkage with a D-A-D core. J Organomet Chem 2022. [DOI: 10.1016/j.jorganchem.2021.122202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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50
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Du M, Shi Y, Zhou Q, Yin Z, Chen L, Shu Y, Sun G, Zhang G, Peng Q, Zhang D. White Emissions Containing Room Temperature Phosphorescence from Different Excited States of a D-π-A Molecule Depending on the Aggregate States. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2104539. [PMID: 34939749 PMCID: PMC8844470 DOI: 10.1002/advs.202104539] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 11/21/2021] [Indexed: 06/14/2023]
Abstract
Development of pure organic molecular materials with room temperature phosphorescence (RTP) and their applications for white emitters have received significant attentions recently. Herein, a D-π-A molecule (DMACPPY) which can realize white emitting under ambient conditions both in the crystal state and the doped-film state by combining RTP with two fluorescent emissions is reported. The white emission from the crystalline sample of DMACPPY consists fluorescence from S2 (the second excited singlet state) and S1 (the first excited singlet state) along with RTP from T1 (the first excited triplet state), namely, SST-type white light. While, the white emission from the poly methyl methacrylate (PMMA) film doped with DMACPPY contains fluorescences from S2 and S1 , and RTP from T2 (the second excited triplet state) rather than T1 (STS type). DMACPPY cannot exhibit white spectrum within alternative crystalline state since inferior RTP intensity despite similar ternary emissions. The results demonstrate that the emissive properties for excited states of DMACPPY can be tuned by changing the aggregate state from crystalline to dispersion state in PMMA film. This new RTP emitter fulfills the talent for white emitting and achieves dual-mode white emissions, invisibly, expands the application range for pure organic and heavy atom-free RTP materials.
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Affiliation(s)
- Mingxu Du
- Beijing National Laboratory for Molecular SciencesCAS Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing100190P. R. China
| | - Yuhao Shi
- University of Chinese Academy of SciencesBeijing100049P. R. China
- Department of ChemistryYanbian UniversityJilin133002China
| | - Qi Zhou
- Beijing National Laboratory for Molecular SciencesCAS Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing100190P. R. China
- University of Chinese Academy of SciencesBeijing100049P. R. China
| | - Zheng Yin
- Beijing National Laboratory for Molecular SciencesCAS Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing100190P. R. China
- University of Chinese Academy of SciencesBeijing100049P. R. China
| | - Liangliang Chen
- Beijing National Laboratory for Molecular SciencesCAS Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing100190P. R. China
- University of Chinese Academy of SciencesBeijing100049P. R. China
| | - Yilin Shu
- Beijing National Laboratory for Molecular SciencesCAS Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing100190P. R. China
- University of Chinese Academy of SciencesBeijing100049P. R. China
| | - Guang‐Yan Sun
- Department of ChemistryYanbian UniversityJilin133002China
| | - Guanxin Zhang
- Beijing National Laboratory for Molecular SciencesCAS Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing100190P. R. China
- University of Chinese Academy of SciencesBeijing100049P. R. China
| | - Qian Peng
- University of Chinese Academy of SciencesBeijing100049P. R. China
| | - Deqing Zhang
- Beijing National Laboratory for Molecular SciencesCAS Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing100190P. R. China
- University of Chinese Academy of SciencesBeijing100049P. R. China
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