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Kim SY, Yu JW, Choi S, Cho DW, Kim CH, Son HJ, Kang SO. Amplified Triplet Emission of Organic Periphery Groups by Exothermic Triplet-Triplet Energy Transfer from the 3MLCT State of an Ir(pmi)3 Core Complex to the 3LC State of Geometrically Confined Carbazole/Naphthyl Tethers. Inorg Chem 2023; 62:14228-14242. [PMID: 37612826 DOI: 10.1021/acs.inorgchem.3c01452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/25/2023]
Abstract
To investigate the excited-state properties of metal-organic bichromophores, including energy transfer mechanisms, a series of new homoleptic N-heterocyclic carbene (NHC)-based iridium(III) complexes were prepared by incorporating a peripheral naphthalene (Np) (Ir(Nppmi)3: fac-/mer-Ir(1-Nppmi)3 and fac-/mer-Ir(2-Nppmi)3) or carbazole (Cz) (Ir(Czpmi)3: fac-/mer-Ir(o-Czpmi)3, fac-/mer-Ir(m-Czpmi)3, and fac-/mer-Ir(p-Czpmi)3) unit to the phenyl moiety of the phenylimidazole (pmi) ligand. Through a series of photophysical analyses and femtosecond time-resolved absorption (fs-TA) spectroscopy, it was discovered that the phosphorescence of the Ir core, (Ir(pmi)3), was considerably quenched, while intense phosphorescence peaks arising from the excited triplet Np (3Np*)/Cz (3Cz*) species were primarily observed at room temperature (r.t.) and low temperature. Such amplified phosphorescence of the tethered organic Np and Cz units originated from triplet-triplet energy transfer (TTET) from the high-lying metal-to-ligand charge transfer (3MLCT) state of the Ir(pmi)3 core to the ligand-centered triplet state (3LC) of the peripheral Np and Cz units. This result indicates that the exothermic intramolecular energy transfer (IET) in the excited triplet state realizes the efficient phosphorescent emission of geometrically confined organic tethers.
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Affiliation(s)
- So-Yoen Kim
- Department of Advanced Materials Chemistry, Korea University, Sejong 30019, Korea
| | - Jeong-Wan Yu
- Department of Advanced Materials Chemistry, Korea University, Sejong 30019, Korea
| | - Sunghan Choi
- Department of Advanced Materials Chemistry, Korea University, Sejong 30019, Korea
| | - Dae Won Cho
- Department of Advanced Materials Chemistry, Korea University, Sejong 30019, Korea
| | - Chul Hoon Kim
- Department of Advanced Materials Chemistry, Korea University, Sejong 30019, Korea
| | - Ho-Jin Son
- Department of Advanced Materials Chemistry, Korea University, Sejong 30019, Korea
| | - Sang Ook Kang
- Department of Advanced Materials Chemistry, Korea University, Sejong 30019, Korea
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2
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Chen Y, Wang C, Chou T, Chou P. Comment on “Metal‐Free Triplet Phosphors with High Emission Efficiency and High Tunability”. Angew Chem Int Ed Engl 2022; 61:e202109224. [DOI: 10.1002/anie.202109224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2021] [Indexed: 11/08/2022]
Affiliation(s)
- Yi Chen
- Department of Chemistry National (Taiwan) University Taipei 10617 Taiwan
| | - Chih‐Hsing Wang
- Department of Chemistry National (Taiwan) University Taipei 10617 Taiwan
| | - Tai‐Che Chou
- Department of Chemistry National (Taiwan) University Taipei 10617 Taiwan
| | - Pi‐Tai Chou
- Department of Chemistry National (Taiwan) University Taipei 10617 Taiwan
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3
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Wu P, Lou L, Xu T, Zhao J, Hai M, Wang D, Cao H, He W, Yang Z. Epoxy Vitrimer Based on Temperature‐Responsive Pure Organic Room Temperature Phosphorescent Materials. ChemistrySelect 2022. [DOI: 10.1002/slct.202104149] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Peng Wu
- Department of Materials Physics and Chemistry School of Materials Science and Engineering University of Science and Technology Beijing Xueyuan Road 30#, Haidian District 100083 Beijing People's Republic of China
| | - Lingyun Lou
- Department of Materials Physics and Chemistry School of Materials Science and Engineering University of Science and Technology Beijing Xueyuan Road 30#, Haidian District 100083 Beijing People's Republic of China
| | - Tianqi Xu
- Department of Materials Physics and Chemistry School of Materials Science and Engineering University of Science and Technology Beijing Xueyuan Road 30#, Haidian District 100083 Beijing People's Republic of China
| | - Jianming Zhao
- Department of Materials Physics and Chemistry School of Materials Science and Engineering University of Science and Technology Beijing Xueyuan Road 30#, Haidian District 100083 Beijing People's Republic of China
| | - Mingtan Hai
- Department of Materials Physics and Chemistry School of Materials Science and Engineering University of Science and Technology Beijing Xueyuan Road 30#, Haidian District 100083 Beijing People's Republic of China
| | - Dong Wang
- Department of Materials Physics and Chemistry School of Materials Science and Engineering University of Science and Technology Beijing Xueyuan Road 30#, Haidian District 100083 Beijing People's Republic of China
| | - Hui Cao
- Department of Materials Physics and Chemistry School of Materials Science and Engineering University of Science and Technology Beijing Xueyuan Road 30#, Haidian District 100083 Beijing People's Republic of China
| | - Wanli He
- Department of Materials Physics and Chemistry School of Materials Science and Engineering University of Science and Technology Beijing Xueyuan Road 30#, Haidian District 100083 Beijing People's Republic of China
| | - Zhou Yang
- Department of Materials Physics and Chemistry School of Materials Science and Engineering University of Science and Technology Beijing Xueyuan Road 30#, Haidian District 100083 Beijing People's Republic of China
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4
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Chen Y, Wang C, Chou T, Chou P. Comment on “Metal‐Free Triplet Phosphors with High Emission Efficiency and High Tunability”. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202109224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yi Chen
- Department of Chemistry National (Taiwan) University Taipei 10617 Taiwan
| | - Chih‐Hsing Wang
- Department of Chemistry National (Taiwan) University Taipei 10617 Taiwan
| | - Tai‐Che Chou
- Department of Chemistry National (Taiwan) University Taipei 10617 Taiwan
| | - Pi‐Tai Chou
- Department of Chemistry National (Taiwan) University Taipei 10617 Taiwan
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5
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Yan X, Peng H, Xiang Y, Wang J, Yu L, Tao Y, Li H, Huang W, Chen R. Recent Advances on Host-Guest Material Systems toward Organic Room Temperature Phosphorescence. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2104073. [PMID: 34725921 DOI: 10.1002/smll.202104073] [Citation(s) in RCA: 85] [Impact Index Per Article: 42.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 08/15/2021] [Indexed: 06/13/2023]
Abstract
The design and characterization of purely organic room-temperature phosphorescent (RTP) materials for optoelectronic applications is currently the focus of research in the field of organic electronics. Particularly, with the merits of preparation controllability and modulation flexibility, host-guest material systems are encouraging candidates that can prepare high-performance RTP materials. By regulating the interaction between host and guest molecules, it can effectively control the quantum efficiency, luminescent lifetime, and color of host-guest RTP materials, and even produce RTP emission with stimuli-responsive features, holding tremendous potential in diverse applications such as encryption and anti-counterfeiting, organic light-emitting diodes, sensing, optical recording, etc. Here a roundup of rapid achievement in construction strategies, molecule systems, and diversity of applications of host-guest material systems is outlined. Intrinsic correlations between the molecular properties and a survey of recent significant advances in the development of host-guest RTP materials divided into three systems including rigid matrix, exciplex, and sensitization are presented. Providing an insightful understanding of host-guest RTP materials and offering a promising platform for high throughput screening of RTP systems with inherent advantages of simple material preparation, low-cost, versatile resource, and controllably modulated properties for a wide range of applications is intended.
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Affiliation(s)
- Xi Yan
- Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing, 210023, China
| | - Hao Peng
- Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing, 210023, China
| | - Yuan Xiang
- Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing, 210023, China
| | - Juan Wang
- Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing, 210023, China
| | - Lan Yu
- Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing, 210023, China
| | - Ye Tao
- Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing, 210023, China
| | - Huanhuan Li
- Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing, 210023, China
| | - Wei Huang
- Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing, 210023, China
- Frontiers Science Center for Flexible Electronics (FSCFE), MIIT Key Laboratory of Flexible Electronics (KLoFE), Shaanxi Key Laboratory of Flexible Electronics, Xi'an Key Laboratory of Flexible Electronics, Xi'an Key Laboratory of Biomedical Materials & Engineering, Xi'an Institute of Flexible Electronics, Institute of Flexible Electronics (IFE), Northwestern Polytechnical University, Xi'an, Shanxi, 710072, China
| | - Runfeng Chen
- Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing, 210023, China
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6
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Highly sensitive and quantitative biodetection with lipid-polymer hybrid nanoparticles having organic room-temperature phosphorescence. Biosens Bioelectron 2021; 199:113889. [PMID: 34968954 DOI: 10.1016/j.bios.2021.113889] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Revised: 12/09/2021] [Accepted: 12/10/2021] [Indexed: 02/07/2023]
Abstract
A versatile organic room-temperature phosphorescence (RTP)-based "turn on" biosensor platform has been devised with high sensitivity by combining oxygen-sensitive lipid-polymer hybrid RTP nanoparticles with a signal-amplifying enzymatic oxygen scavenging reaction in aqueous solutions. When integrated with a sandwich-DNA hybridization assay on 96-well plates, our phosphorimetric sensor demonstrates sequence-specific detection of a cell-free cancer biomarker, a TP53 gene fragment, with a sub-picomolar (0.5 p.m.) detection limit. This assay is compatible with detecting cell-free nucleic acids in human urine samples. Simply by re-programming the detection probe, our unique methodology can be adapted to a broad range of biosensor applications for biomarkers of great clinical importance but difficult to detect due to their low abundance in vivo.
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Abstract
Multifunctional stimuli-responsive fluorophores showing bright environment-sensitive emissions have fueled intense research due to their innovative applications in the fields of biotechnologies, optoelectronics, and materials. A strong structural diversity is observed among molecular materials, which has been enriched over the years with a growing responsiveness to stimuli. Boron dipyrromethene (BODIPY) dyes have long been the flagship of emissive boron complexes due to their outstanding properties until a decade ago when analogues based on N^O, N^N, or N^C π-conjugated chelates emerged. The finality of developing borate dyes was to compensate for BODIPYs’ lack of solid-state fluorescence and small Stokes shifts while keeping their excellent optical properties in solution. Among them, the borate complexes based on a salicylaldimine ligand, called by the acronym boranils appear as the most promising, owing to their facile synthesis and dual-state emission properties. Boranil dyes have proven to be good alternatives to BODIPY dyes and have been applied in applications such as bioimaging, bioconjugation, and detection of biosubstrates. Meanwhile, ab initio calculations have rationalized experimental results and provided insightful feedback for future designs. This review article aims at providing a concise yet representative overview of the chemistry around the boranil core with the subsequent applications.
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Zhou B, Xiao G, Yan D. Boosting Wide-Range Tunable Long-Afterglow in 1D Metal-Organic Halide Micro/Nanocrystals for Space/Time-Resolved Information Photonics. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2007571. [PMID: 33687769 DOI: 10.1002/adma.202007571] [Citation(s) in RCA: 86] [Impact Index Per Article: 28.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 01/14/2021] [Indexed: 06/12/2023]
Abstract
Molecular afterglow materials with ultralong-lived excited states have attracted considerable interest owing to their promise for light-emitting devices, optical imaging, and anti-counterfeiting applications. However, the realization of ultralong afterglow emission in low-dimensional micro/nanostructures has remained an open challenge, limiting progress toward new-generation photonic applications. In this work, new types of mono/binuclear metal-organic halide micro/nanocrystals with tunable afterglow properties, made possibly by the rational control over both ultralong-lived room-temperature phosphorescence and thermally activated delayed fluorescence, are developed. Interestingly, the mono/binuclear coordination complexes present excitation-dependent luminescence across a wide range (wavelength > 150 nm) with broad emission color differences from blue to yellow owing to the multiple long-lived excited states. The 1D binuclear metal-organic microrods further exhibit excitation-dependent optical waveguide and space/time dual-resolved afterglow emission properties, endowing them with great potential in wavelength-division multiplexing information photonics and logic gates. Therefore, this work not only communicates the first example of wide-range tunable ultralong afterglow of low-dimensional metal-organic micro/nanocrystals under ambient conditions but also provides a new route to achieve optical communications and photonic logic compilation at the micro/nanoscale.
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Affiliation(s)
- Bo Zhou
- Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing, 100875, P. R. China
| | - Guowei Xiao
- Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing, 100875, P. R. China
| | - Dongpeng Yan
- Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing, 100875, P. R. China
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9
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Nidhankar AD, Goudappagouda, Wakchaure VC, Babu SS. Efficient metal-free organic room temperature phosphors. Chem Sci 2021; 12:4216-4236. [PMID: 34163691 PMCID: PMC8179585 DOI: 10.1039/d1sc00446h] [Citation(s) in RCA: 64] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Accepted: 02/18/2021] [Indexed: 11/21/2022] Open
Abstract
An innovative transformation of organic luminescent materials in recent years has realised the exciting research area of ultralong room-temperature phosphorescence. Here the credit for the advancements goes to the rational design of new organic phosphors. The continuous effort in the area has yielded wide varieties of metal-free organic systems capable of extending the lifetime to several seconds under ambient conditions with high quantum yield and attractive afterglow properties. The various strategies adopted in the past decade to manipulate the fate of triplet excitons suggest a bright future for this class of materials. To analyze the underlying processes in detail, we have chosen high performing organic triplet emitters that utilized the best possible ways to achieve a lifetime above one second along with impressive quantum yield and afterglow properties. Such a case study describing different classes of metal-free organic phosphors and strategies adopted for the efficient management of triplet excitons will stimulate the development of better candidates for futuristic applications. This Perspective discusses the phosphorescence features of single- and multi-component crystalline assemblies, host-guest assemblies, polymers, and polymer-based systems under various classes of molecules. The various applications of the organic phosphors, along with future perspectives, are also highlighted.
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Affiliation(s)
- Aakash D Nidhankar
- Organic Chemistry Division, National Chemical Laboratory (CSIR-NCL) Dr Homi Bhabha Road Pune-411008 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad-201002 India
| | - Goudappagouda
- Organic Chemistry Division, National Chemical Laboratory (CSIR-NCL) Dr Homi Bhabha Road Pune-411008 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad-201002 India
| | - Vivek C Wakchaure
- Organic Chemistry Division, National Chemical Laboratory (CSIR-NCL) Dr Homi Bhabha Road Pune-411008 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad-201002 India
| | - Sukumaran Santhosh Babu
- Organic Chemistry Division, National Chemical Laboratory (CSIR-NCL) Dr Homi Bhabha Road Pune-411008 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad-201002 India
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10
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Peng Q, Ma H, Shuai Z. Theory of Long-Lived Room-Temperature Phosphorescence in Organic Aggregates. Acc Chem Res 2021; 54:940-949. [PMID: 33347277 DOI: 10.1021/acs.accounts.0c00556] [Citation(s) in RCA: 85] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
ConspectusRoom-temperature phosphorescence (RTP) with a long afterglow from purely organic molecular aggregates has recently attracted many investigations because traditionally only inorganic and transition-metal complexes can emit phosphorescence at room temperature. Purely organic molecules can exhibit phosphorescence only at cryogenic temperatures and under inert conditions in solution. However, recently, a number of organic compounds have been found to demonstrate bright RTP upon aggregation, sometimes with a remarkable morphology dependence. We intended to rationalize such aggregation-induced organic RTP through theoretical investigation and quantum chemistry calculations by invoking intermolecular interaction effects. And we have identified the molecular descriptors for the molecular design of RTP materials.In this Account, we started with the proposition of the mechanism of intermolecular electrostatic-interaction-induced RTP at the molecular level by using molecular dynamics simulations, hybrid quantum mechanics, and molecular mechanics (QM/MM) coupled with the thermal vibration correlation function (TVCF) formalism we developed earlier. The effective intermolecular electrostatic interactions could stem from a variety of interactions in different organic RTP crystals, such as hydrogen bonding, π-halogen bonding, anion-π+ interaction, and d-pπ bonds and so forth. We find that these interactions can change the molecular orbital compositions involved in the lowest-lying singlet and triplet excited states that are responsible for phosphorescence, either through facilitating intersystem crossing from the excited-state singlet to the triplet and/or suppressing the nonradiative decay process from the lowest triplet to the ground state. This underlying RTP mechanism is believed to be very helpful in systematically and comprehensively understanding the aggregation/crystal-induced persistent organic RTP, which has been applied to explain a number of experiments.We then propose the molecular descriptors to characterize the phosphorescence efficiency and lifetime, respectively, derived from fundamental photophysical processes and requirements to obey the El-Sayed rule and generate phosphorescence. For a prototypical RTP system consisting of a carbonyl group and π-conjugated segments, the excited states can be regarded as an admixture of n → π* (with portion α) and π → π* (with portion β). The intersystem crossing (ISC) rate of S1 → Tn is mostly governed by the modification of the product of α and β, and the nonradiative rate of T1 → S0 is determined by the β value of T1. Thus, we employ γ = α × β and β to describe the phosphorescence efficiency and lifetime, respectively, which have been successfully applied in the molecular design of efficient and long-lived RTP systems in experiments. The molecular descriptors outlined in this Account, which are easily obtained from simple quantum chemistry calculations, are expected to play important roles in the machine-learning-based molecular screening in the future.
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Affiliation(s)
- Qian Peng
- School of Chemical Sciences, University of Chinese Academy of Sciences, 100049 Beijing, P. R. China
- Key Laboraorty of Organic Solids, Institute of Chemistry of the Chinese Academy of Sciences, 100190 Beijing, P. R. China
| | - Huili Ma
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, P. R. China
| | - Zhigang Shuai
- MOE Key Laboratory of Organic OptoElectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China
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11
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Qiao C, Zhang C, Zhou Z, Dong H, Du Y, Yao J, Zhao YS. A Photoisomerization‐Activated Intramolecular Charge‐Transfer Process for Broadband‐Tunable Single‐Mode Microlasers. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202007361] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Chan Qiao
- Key Laboratory of Photochemistry Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Chunhuan Zhang
- Key Laboratory of Photochemistry Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
| | - Zhonghao Zhou
- Key Laboratory of Photochemistry Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Haiyun Dong
- Key Laboratory of Photochemistry Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
| | - Yuxiang Du
- Key Laboratory of Photochemistry Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Jiannian Yao
- Key Laboratory of Photochemistry Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Yong Sheng Zhao
- Key Laboratory of Photochemistry Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
- University of Chinese Academy of Sciences Beijing 100049 China
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12
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Göbel D, Friedrich M, Lork E, Nachtsheim BJ. Clickable azide-functionalized bromoarylaldehydes - synthesis and photophysical characterization. Beilstein J Org Chem 2020; 16:1683-1692. [PMID: 32733611 PMCID: PMC7372231 DOI: 10.3762/bjoc.16.139] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Accepted: 06/30/2020] [Indexed: 12/05/2022] Open
Abstract
Herein, we present a facile synthesis of three azide-functionalized fluorophores and their covalent attachment as triazoles in Huisgen-type cycloadditions with model alkynes. Besides two ortho- and para-bromo-substituted benzaldehydes, the azide functionalization of a fluorene-based structure will be presented. The copper(I)-catalyzed azide–alkyne cycloaddition (CuAAC) of the so-synthesized azide-functionalized bromocarbaldehydes with terminal alkynes, exhibiting different degrees of steric demand, was performed in high efficiency. Finally, we investigated the photophysical properties of the azide-functionalized arenes and their covalently linked triazole derivatives to gain deeper insight towards the effect of these covalent linkers on the emission behavior.
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Affiliation(s)
- Dominik Göbel
- Institute for Organic and Analytical Chemistry, University of Bremen, Leobener Straße 7, 28359 Bremen, Germany
| | - Marius Friedrich
- Institute for Organic and Analytical Chemistry, University of Bremen, Leobener Straße 7, 28359 Bremen, Germany.,Department of Organic Chemistry, Technical University Kaiserslautern, Erwin-Schrödinger-Straße Geb.54, 67663 Kaiserslautern, Germany
| | - Enno Lork
- Institute for Inorganic and Crystallographic Chemistry, University of Bremen, Leobener Straße NW2, 28359 Bremen, Germany
| | - Boris J Nachtsheim
- Institute for Organic and Analytical Chemistry, University of Bremen, Leobener Straße 7, 28359 Bremen, Germany
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13
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Qiao C, Zhang C, Zhou Z, Dong H, Du Y, Yao J, Zhao YS. A Photoisomerization-Activated Intramolecular Charge-Transfer Process for Broadband-Tunable Single-Mode Microlasers. Angew Chem Int Ed Engl 2020; 59:15992-15996. [PMID: 32519468 DOI: 10.1002/anie.202007361] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Indexed: 01/14/2023]
Abstract
Miniaturized lasers with high spectral purity and wide wavelength tunability are crucial for various photonic applications. Here we propose a strategy to realize broadband-tunable single-mode lasing based on a photoisomerization-activated intramolecular charge-transfer (ICT) process in coupled polymer microdisk cavities. The photoisomerizable molecules doped in the polymer microdisks can be quantitatively transformed into a kind of laser dye with strong ICT character by photoexcitation. The gain region was tailored over a wide range through the self-modulation of the optically activated ICT isomers. Meanwhile, the resonant modes shifted with the photoisomerization because of a change in the effective refractive index of the polymer microdisk cavity. Based on the synergetic modulation of the optical gain and microcavity, we realized the broadband tuning of the single-mode laser. These results offer a promising route to fabricate broadband-tunable microlasers towards practical photonic integrations.
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Affiliation(s)
- Chan Qiao
- Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Chunhuan Zhang
- Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Zhonghao Zhou
- Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Haiyun Dong
- Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Yuxiang Du
- Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Jiannian Yao
- Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yong Sheng Zhao
- Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
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14
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Sakura Y, Yumioka F, Funaki T, Ono K. Synthesis and Photovoltaic Properties of Boron β-Ketoiminate Dyes Forming a Linear Donor-π-Acceptor Structure. Chem Asian J 2020; 15:1982-1989. [PMID: 32394647 DOI: 10.1002/asia.202000448] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 05/10/2020] [Indexed: 01/07/2023]
Abstract
Organoboron complexes are of interest as chromophores for dye sensitizers owing to their light-harvesting and carrier-transporting properties. In this study, compounds containing boron β-ketoiminate (BKI) as a chromophore were synthesized and used as dye sensitizers in dye-sensitized solar cells. The new dyes were orange or red crystals and showed maximum absorptions in the 410-450 nm wavelength region on titanium dioxide substrates. These electrodes exhibited maximum efficiencies of over 80% in incident photon-to-current conversion efficiency spectra, suggesting that the continuous process of light absorption-excitation-electron injection was effectively performed. Open-circuit photovoltages were relatively high owing to the large dipole moments of the BKI dyes with a linear molecular structure. Thus, a maximum power conversion efficiency of 5.3% was successfully observed. Comparison of BKI dyes with boron β-diketonate dyes revealed certain differences in solution stability, spectral properties, and photovoltaic characteristics.
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Affiliation(s)
- Yuki Sakura
- Graduate School of Engineering, Nagoya Institute of Technology Gokiso, Showa-ku, Nagoya, 466-8555, Japan
| | - Fumina Yumioka
- Graduate School of Engineering, Nagoya Institute of Technology Gokiso, Showa-ku, Nagoya, 466-8555, Japan
| | - Takashi Funaki
- National Institute of Advanced Industrial Science and Technology Higashi, Tsukuba, 305-8565, Japan
| | - Katsuhiko Ono
- Graduate School of Engineering, Nagoya Institute of Technology Gokiso, Showa-ku, Nagoya, 466-8555, Japan
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16
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Kalluvettukuzhy NK, Pagidi S, Prasad Nandi R, Thilagar P. Exploiting N−H–π Interactions in 2‐(Dimesitylboraneyl)‐1H‐pyrrole for Luminescence Enhancement. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.201900756] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Neena K Kalluvettukuzhy
- Department of Inorganic and physical ChemistryIndian Institute of Science Bangalore 560012 India
| | - Sudhakar Pagidi
- Department of Inorganic and physical ChemistryIndian Institute of Science Bangalore 560012 India
| | - Rajendra Prasad Nandi
- Department of Inorganic and physical ChemistryIndian Institute of Science Bangalore 560012 India
| | - Pakkirisamy Thilagar
- Department of Inorganic and physical ChemistryIndian Institute of Science Bangalore 560012 India
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17
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Shimizu M, Nagano S, Kinoshita T. Dual Emission from Precious Metal‐Free Luminophores Consisting of C, H, O, Si, and S/P at Room Temperature. Chemistry 2020; 26:5162-5167. [DOI: 10.1002/chem.201905820] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2019] [Revised: 01/15/2020] [Indexed: 12/19/2022]
Affiliation(s)
- Masaki Shimizu
- Faculty of Molecular Chemistry and EngineeringKyoto Institute of Technology 1 Hashikami-cho, Matsugasaki, Sakyo-ku Kyoto 606-8585 Japan
| | - Sho Nagano
- Faculty of Molecular Chemistry and EngineeringKyoto Institute of Technology 1 Hashikami-cho, Matsugasaki, Sakyo-ku Kyoto 606-8585 Japan
| | - Takumi Kinoshita
- Faculty of Molecular Chemistry and EngineeringKyoto Institute of Technology 1 Hashikami-cho, Matsugasaki, Sakyo-ku Kyoto 606-8585 Japan
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18
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Sasabe H, Kato Y, Watanabe Y, Ohsawa T, Aizawa N, Fujiwara W, Pu YJ, Katagiri H, Kido J. Room-Temperature Phosphorescence from a Series of 3-Pyridylcarbazole Derivatives. Chemistry 2019; 25:16294-16300. [PMID: 31573108 DOI: 10.1002/chem.201903100] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2019] [Revised: 09/30/2019] [Indexed: 11/08/2022]
Abstract
Exploration of pure metal-free organic molecules that exhibit strong room-temperature phosphorescence (RTP) is an emerging research topic. In this regard, unveiling the design principles for an efficient RTP molecule is an essential, but challenging, task. A small molecule is an ideal platform to precisely understand the fundamental role of each functional component because the parent molecule can be easily derivatized. Here, the RTP behaviors of a series of 3-pyridylcarbazole derivatives are presented. Experimental studies in combination with theoretical calculations reveal the crucial role of the n orbital on the central pyridine ring in the dramatic enhancement of the intersystem crossing between the charge-transfer-excited singlet state and the locally excited triplet states. Single-crystal X-ray crystallographic studies apparently indicate that both the pyridine ring and fluorine atom contribute to the enhancement of the RTP because of the restricted motion owing to weak C-H⋅⋅⋅N and H⋅⋅⋅F hydrogen-bonding interactions. The single crystal of the fluorine-substituted derivative shows an ultra-long phosphorescent lifetime (τP ) of 1.1 s and a phosphorescence quantum yield (ΦP ) of 1.2 %, whereas the bromine-substituted derivative exhibits τP of 0.15 s with a ΦP of 7.9 %. We believe that this work provides a fundamental and universal guideline for the generation of pure organic molecules exhibiting strong RTP.
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Affiliation(s)
- Hisahiro Sasabe
- Research Center for Organic Electronics (ROEL) and Frontier Center for Organic Materials (FROM), Yamagata University, 4-3-16 Jonan, Yonezawa Yamagata, 992-8510, Japan.,Department of Organic Materials Science, Graduate School of Organic Materials Science, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata, 992-8510, Japan
| | - Yuki Kato
- Department of Organic Materials Science, Graduate School of Organic Materials Science, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata, 992-8510, Japan
| | - Yuichiro Watanabe
- Department of Organic Materials Science, Graduate School of Organic Materials Science, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata, 992-8510, Japan
| | - Tatsuya Ohsawa
- Department of Organic Materials Science, Graduate School of Organic Materials Science, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata, 992-8510, Japan
| | - Naoya Aizawa
- RIKEN Center for Emergent Matter Science (CEMS), 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan.,PRESTO (Japan) Science and Technology Agency (JST), 4-1-8 Honcho, Kawaguchi, Saitama, 332-0012, Japan
| | - Wataru Fujiwara
- Department of Organic Materials Science, Graduate School of Organic Materials Science, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata, 992-8510, Japan
| | - Yong-Jin Pu
- RIKEN Center for Emergent Matter Science (CEMS), 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan
| | - Hiroshi Katagiri
- Department of Organic Materials Science, Graduate School of Organic Materials Science, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata, 992-8510, Japan
| | - Junji Kido
- Department of Organic Materials Science, Graduate School of Organic Materials Science, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata, 992-8510, Japan
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19
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Zhang Y, Zhao J, Zhu C, Bian L, Shi H, Zhang S, Ma H, Huang W. Regioisomerism effect (RIE) on optimizing ultralong organic phosphorescence lifetimes. CHINESE CHEM LETT 2019. [DOI: 10.1016/j.cclet.2019.09.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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20
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Hugelshofer CL, Palani V, Sarpong R. Calyciphylline B-type Alkaloids: Evolution of a Synthetic Strategy to (−)-Daphlongamine H. J Org Chem 2019; 84:14069-14091. [DOI: 10.1021/acs.joc.9b02223] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Cedric L. Hugelshofer
- Department of Chemistry, University of California Berkeley, Berkeley, California 94720, United States
| | - Vignesh Palani
- Department of Chemistry, University of California Berkeley, Berkeley, California 94720, United States
| | - Richmond Sarpong
- Department of Chemistry, University of California Berkeley, Berkeley, California 94720, United States
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21
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Madhunala S, Kurma SH, Etikala VR, Bhimapaka CR. Condensation of 4-chloro-2H-chromene-3-carbaldehydes and ethyl-3-aminocrotonates with p-TsOH: a facile approach for the synthesis of chromenyldihydropyridines. SYNTHETIC COMMUN 2019. [DOI: 10.1080/00397911.2019.1631850] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Shravani Madhunala
- Organic Synthesis and Process Chemistry Division, CSIR-Indian Institute of Chemical Technology, Hyderabad, India
| | - Siva Hariprasad Kurma
- Organic Synthesis and Process Chemistry Division, CSIR-Indian Institute of Chemical Technology, Hyderabad, India
| | - Varsha Reddy Etikala
- Organic Synthesis and Process Chemistry Division, CSIR-Indian Institute of Chemical Technology, Hyderabad, India
| | - China Raju Bhimapaka
- Organic Synthesis and Process Chemistry Division, CSIR-Indian Institute of Chemical Technology, Hyderabad, India
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22
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Shi H, Zou L, Huang K, Wang H, Sun C, Wang S, Ma H, He Y, Wang J, Yu H, Yao W, An Z, Zhao Q, Huang W. A Highly Efficient Red Metal-free Organic Phosphor for Time-Resolved Luminescence Imaging and Photodynamic Therapy. ACS APPLIED MATERIALS & INTERFACES 2019; 11:18103-18110. [PMID: 31037937 DOI: 10.1021/acsami.9b01615] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Developing highly efficient red metal-free organic phosphors for biological applications is a formidable challenge. Here, we report a novel molecular design principle to obtain red metal-free organic phosphors with long emission lifetime (504.6 μs) and high phosphorescence efficiency (14.6%) from the isolated molecules in the crystal. Furthermore, the well-dispersed phosphorescent nanodots (PNDs) with the particle size around 5 nm are prepared through polymer-encapsulation in an aqueous solution, which show good biocompatibility and low cytotoxicity. The metal-free PNDs are successfully applied to time-resolved luminescence imaging to eliminate background fluorescence interference both in vitro and vivo as well as effective photodynamic anticancer therapy for the first time. This work will not only pave a pathway to develop highly efficient metal-free RTP materials but also expand the scope of their applications to biomedical fields.
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Affiliation(s)
- Huifang Shi
- Institute of Flexible Electronics (IFE) , Northwestern Polytechnical University (NPU) , 127 West Youyi Road , Xi'an 710072 , China
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM) , Nanjing Tech University (NanjingTech) , 30 South Puzhu Road , Nanjing 211816 , China
| | - Liang Zou
- Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM) , Nanjing University of Posts and Telecommunications , Wenyuan Road 9 , Nanjing 210023 , China
| | - Kaiwei Huang
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM) , Nanjing Tech University (NanjingTech) , 30 South Puzhu Road , Nanjing 211816 , China
| | - He Wang
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM) , Nanjing Tech University (NanjingTech) , 30 South Puzhu Road , Nanjing 211816 , China
| | - Chen Sun
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM) , Nanjing Tech University (NanjingTech) , 30 South Puzhu Road , Nanjing 211816 , China
| | - Shan Wang
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM) , Nanjing Tech University (NanjingTech) , 30 South Puzhu Road , Nanjing 211816 , China
| | - Huili Ma
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM) , Nanjing Tech University (NanjingTech) , 30 South Puzhu Road , Nanjing 211816 , China
| | - Yarong He
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM) , Nanjing Tech University (NanjingTech) , 30 South Puzhu Road , Nanjing 211816 , China
| | - Jianpu Wang
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM) , Nanjing Tech University (NanjingTech) , 30 South Puzhu Road , Nanjing 211816 , China
| | - Haidong Yu
- Institute of Flexible Electronics (IFE) , Northwestern Polytechnical University (NPU) , 127 West Youyi Road , Xi'an 710072 , China
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM) , Nanjing Tech University (NanjingTech) , 30 South Puzhu Road , Nanjing 211816 , China
| | - Wei Yao
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM) , Nanjing Tech University (NanjingTech) , 30 South Puzhu Road , Nanjing 211816 , China
| | - Zhongfu An
- Institute of Flexible Electronics (IFE) , Northwestern Polytechnical University (NPU) , 127 West Youyi Road , Xi'an 710072 , China
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM) , Nanjing Tech University (NanjingTech) , 30 South Puzhu Road , Nanjing 211816 , China
| | - Qiang Zhao
- Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM) , Nanjing University of Posts and Telecommunications , Wenyuan Road 9 , Nanjing 210023 , China
| | - Wei Huang
- Institute of Flexible Electronics (IFE) , Northwestern Polytechnical University (NPU) , 127 West Youyi Road , Xi'an 710072 , China
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM) , Nanjing Tech University (NanjingTech) , 30 South Puzhu Road , Nanjing 211816 , China
- Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM) , Nanjing University of Posts and Telecommunications , Wenyuan Road 9 , Nanjing 210023 , China
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23
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Zhan G, Liu Z, Bian Z, Huang C. Recent Advances in Organic Light-Emitting Diodes Based on Pure Organic Room Temperature Phosphorescence Materials. Front Chem 2019; 7:305. [PMID: 31134182 PMCID: PMC6514089 DOI: 10.3389/fchem.2019.00305] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Accepted: 04/16/2019] [Indexed: 11/23/2022] Open
Abstract
Pure organic room temperature phosphorescence (RTP) materials have attracted extensive attention in recent years due to their unique characteristics, such as flexible design method, low toxicity, low cost, as well as the ease of production at scale. The involvement of triplet state and direct radiative transition from the triplet state show that RTP materials have great potential as a new generation emitter in organic light-emitting diodes (OLEDs). Based on the mechanism of phosphorescence, various methods have been developed to achieve RTP emissions in the crystal state. However, the observation of RTP in the thin film state is much more difficult to achieve because of the lower degree of rigidity and suppression of the non-radiative transition. In this mini-review, molecular design strategies developed to achieve RTP emissions and their application in OLEDs are summarized and discussed. The conclusion and outlook point to great potential as well as the challenges for the continued study of pure organic RTP materials-based OLEDs.
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Affiliation(s)
- Ge Zhan
- Beijing National Laboratory for Molecular Sciences, Beijing Engineering Technology Research Centre of Active Display, College of Chemistry and Molecular Engineering, Peking University, Beijing, China
| | - Zhiwei Liu
- Beijing National Laboratory for Molecular Sciences, Beijing Engineering Technology Research Centre of Active Display, College of Chemistry and Molecular Engineering, Peking University, Beijing, China
| | - Zuqiang Bian
- Beijing National Laboratory for Molecular Sciences, Beijing Engineering Technology Research Centre of Active Display, College of Chemistry and Molecular Engineering, Peking University, Beijing, China
| | - Chunhui Huang
- Beijing National Laboratory for Molecular Sciences, Beijing Engineering Technology Research Centre of Active Display, College of Chemistry and Molecular Engineering, Peking University, Beijing, China
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24
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Moriya K, Shimada R, Ono K. Difluoroboron Chelation to Quinacridonequinone: A Synthetic Method for Air-Sensitive 6,13-Dihydroxyquinacridone via Boron Complexes. Chem Asian J 2019; 14:1452-1456. [PMID: 30895741 DOI: 10.1002/asia.201900219] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Revised: 03/17/2019] [Indexed: 11/08/2022]
Abstract
This study aims to perform the chelation of difluoroboron (BF2 ) to quinacridonequinone (QQ). The resulting dark green solid was determined to be QA-BF2 , which is a BF2 complex of 6,13-dihydroxyquinacridone (QA-OH), and not QQ-BF2 , which is a BF2 complex of QQ. This result indicated that QQ-BF2 was first generated as an O,O-bidentate chelate, which immediately underwent a two-electron reduction to produce QA-BF2 . This compound was converted to air-sensitive QA-OH by undergoing hydrolysis in argon. Since QA-OH has a strong electron-donating property, it easily produced QQ via air oxidation in the solution. QA-OH also acts as a reducing reagent for quinones. The crystal packing of QA-OH is a herringbone type with short π⋅⋅⋅π contacts, and a good hole mobility has been suggested by theoretical calculations. Herein, a new synthetic method from QQ to QA-OH using BF2 chelation and hydrolysis was proposed. QA-BF2 and QA-OH are useful organic functional pigments and reducing reagents.
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Affiliation(s)
- Koichiro Moriya
- Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya, 466-8555, Japan
| | - Ryohei Shimada
- Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya, 466-8555, Japan
| | - Katsuhiko Ono
- Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya, 466-8555, Japan
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25
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Huang J, Wang Y, Van Hecke K, Pereshivko OP, Peshkov VA. Studies on Functionalization of N,O-Chelated Isoquinoline-Enol Boron Complexes. European J Org Chem 2019. [DOI: 10.1002/ejoc.201801872] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Jianjun Huang
- College of Chemistry, Chemical Engineering and Materials Science; Soochow University; Dushu Lake Campus 215123 Suzhou China
| | - Yingchun Wang
- College of Chemistry, Chemical Engineering and Materials Science; Soochow University; Dushu Lake Campus 215123 Suzhou China
| | - Kristof Van Hecke
- XStruct; Department of Chemistry; Krijgslaan 281-S3, B -9000 Ghent Belgium
| | - Olga P. Pereshivko
- College of Chemistry, Chemical Engineering and Materials Science; Soochow University; Dushu Lake Campus 215123 Suzhou China
| | - Vsevolod A. Peshkov
- College of Chemistry, Chemical Engineering and Materials Science; Soochow University; Dushu Lake Campus 215123 Suzhou China
- Department of Chemistry; School of Science and Technology; Nazarbayev University; 53 Kabanbay Batyr Ave, Block 7 010000 Astana Republic of Kazakhstan
- The Environment and Resource Efficiency Cluster (EREC); Nazarbayev University; Astana Republic of Kazakhstan
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26
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Lv A, Ye W, Jiang X, Gan N, Shi H, Yao W, Ma H, An Z, Huang W. Room-Temperature Phosphorescence from Metal-Free Organic Materials in Solution: Origin and Molecular Design. J Phys Chem Lett 2019; 10:1037-1042. [PMID: 30773889 DOI: 10.1021/acs.jpclett.9b00221] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Metal-free organic materials with room-temperature phosphorescence (RTP) is hardly achieved in solution owing to the ambiguous underlying mechanism. By combining thermal vibration correlation function rate theory and a polarizable continuum model (PCM) coupled with the Tamm-Dancoff approximation method, concentrating on β-hydroxyvinylimine boron compounds C-BF2 and S-BF2, we showed that the increased intersystem crossing ( kisc) and radiative decay rates ( kp) are responsible for the strong RTP of S-BF2 in solution. From C-BF2 to S-BF2, the T2 state is increasingly dominated by the n → π* transition, largely enhancing the kisc of S1 → T2 (up to 3 orders of magnitude) and kp of T1 → S0. Impressively, the nonradiative decay rate of T1 → S0 is slightly increased by suppressing the out-of-plane twisting motions. This mechanism is also tenable for several designed RTP molecules through further experimental demonstration, which will pave a new way to design organic materials with single-molecule phosphorescence for applying to organic light-emitting diodes.
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Affiliation(s)
- Anqi Lv
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM) , Nanjing Tech University (NanjingTech) , 30 South Puzhu Road , Nanjing 211816 , People's Republic of China
| | - Wenpeng Ye
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM) , Nanjing Tech University (NanjingTech) , 30 South Puzhu Road , Nanjing 211816 , People's Republic of China
| | - Xueyan Jiang
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM) , Nanjing Tech University (NanjingTech) , 30 South Puzhu Road , Nanjing 211816 , People's Republic of China
| | - Nan Gan
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM) , Nanjing Tech University (NanjingTech) , 30 South Puzhu Road , Nanjing 211816 , People's Republic of China
| | - Huifang Shi
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM) , Nanjing Tech University (NanjingTech) , 30 South Puzhu Road , Nanjing 211816 , People's Republic of China
| | - Wei Yao
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM) , Nanjing Tech University (NanjingTech) , 30 South Puzhu Road , Nanjing 211816 , People's Republic of China
| | - Huili Ma
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM) , Nanjing Tech University (NanjingTech) , 30 South Puzhu Road , Nanjing 211816 , People's Republic of China
| | - Zhongfu An
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM) , Nanjing Tech University (NanjingTech) , 30 South Puzhu Road , Nanjing 211816 , People's Republic of China
| | - Wei Huang
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM) , Nanjing Tech University (NanjingTech) , 30 South Puzhu Road , Nanjing 211816 , People's Republic of China
- Institute of Flexible Electronics (IFE) , Northwestern Polytechnical University (NPU) , 127 West Youyi Road , Xi'an 710072 , People's Republic of China
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27
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Muthuramalingam S, Garg JA, Karthick R, Fox T, Blacque O, Venkatesan K, Ramanathan S, Kabilan S, Balasubramanian KK. Nickel catalyzed synthesis of 4,4′-bichromenes/4,4′-bithiochromenes and their Atropisomerism. Org Chem Front 2019. [DOI: 10.1039/c8qo00820e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
4,4′-bichromenes and 4,4′-bithiochromenes have been synthesized by a Ni catalyzed homocoupling method and their Atropisomeric behavior has been studied.
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Affiliation(s)
| | - Jai Anand Garg
- Department of Chemistry
- Indian Institute of Technology-Madras
- Chennai-600036
- India
| | - R. Karthick
- Strides-Shasun pharmaceuticals Ltd
- Chennai-600127
- India
| | - Thomas Fox
- Department of Chemistry
- University of Zürich
- Zürich
- Switzerland
| | - Olivier Blacque
- Department of Chemistry
- University of Zürich
- Zürich
- Switzerland
| | - Koushik Venkatesan
- Department of Chemistry
- University of Zürich
- Zürich
- Switzerland
- Department of Molecular Sciences
| | | | | | - K. K. Balasubramanian
- Department of Biotechnology
- Indian Institute of Technology-Madras. Adyar
- Chennai-600036
- India
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28
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Wilbraham L, Louis M, Alberga D, Brosseau A, Guillot R, Ito F, Labat F, Métivier R, Allain C, Ciofini I. Revealing the Origins of Mechanically Induced Fluorescence Changes in Organic Molecular Crystals. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1800817. [PMID: 29845662 DOI: 10.1002/adma.201800817] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Revised: 03/23/2018] [Indexed: 06/08/2023]
Abstract
Mechanofluorochromic molecular materials display a change in fluorescence color through mechanical stress. Complex structure-property relationships in both the crystalline and amorphous phases of these materials govern both the presence and strength of this behavior, which is usually deemed the result of a mechanically induced phase transition. However, the precise nature of the emitting species in each phase is often a matter of speculation, resulting from experimental data that are difficult to interpret, and a lack of an acceptable theoretical model capable of capturing complex environmental effects. With a combined strategy using sophisticated experimental techniques and a new theoretical approach, here the varied mechanofluorochromic behavior of a series of difluoroboron diketonates is shown to be driven by the formation of low-energy exciton traps in the amorphous phase, with a limited number of traps giving rise to the full change in fluorescence color. The results highlight intrinsic structural links between crystalline and amorphous phases, and how these may be exploited for further development of powerful mechanofluorochromic assemblies, in line with modern crystal engineering approaches.
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Affiliation(s)
- Liam Wilbraham
- Institut de Recherche de Chimie Paris IRCP, PSL Research University, CNRS - Chimie ParisTech, 11 rue Pierre et Marie Curie, F-75005, Paris, France
| | - Marine Louis
- PPSM, ENS Paris-Saclay, CNRS, Université Paris-Saclay, 94235, Cachan, France
| | - Domenico Alberga
- Institut de Recherche de Chimie Paris IRCP, PSL Research University, CNRS - Chimie ParisTech, 11 rue Pierre et Marie Curie, F-75005, Paris, France
| | - Arnaud Brosseau
- PPSM, ENS Paris-Saclay, CNRS, Université Paris-Saclay, 94235, Cachan, France
| | - Régis Guillot
- ICMMO, Univ. Paris-Sud, CNRS, Université Paris-Saclay, 91405, Orsay, France
| | - Fuyuki Ito
- Department of Chemistry, Institute of Education, Shinshu University, Nagano, 380-8455, Japan
| | - Frédéric Labat
- Institut de Recherche de Chimie Paris IRCP, PSL Research University, CNRS - Chimie ParisTech, 11 rue Pierre et Marie Curie, F-75005, Paris, France
| | - Rémi Métivier
- PPSM, ENS Paris-Saclay, CNRS, Université Paris-Saclay, 94235, Cachan, France
| | - Clémence Allain
- PPSM, ENS Paris-Saclay, CNRS, Université Paris-Saclay, 94235, Cachan, France
| | - Ilaria Ciofini
- Institut de Recherche de Chimie Paris IRCP, PSL Research University, CNRS - Chimie ParisTech, 11 rue Pierre et Marie Curie, F-75005, Paris, France
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29
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Hugelshofer CL, Palani V, Sarpong R. Oxazaborinines from Vinylogous N-Allylic Amides: Reactivities of Underexplored Heterocyclic Building Blocks. Org Lett 2018; 20:2649-2653. [PMID: 29667837 DOI: 10.1021/acs.orglett.8b00859] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Access to a new class of oxazaborinines using an efficient transition-metal-catalyzed rearrangement is demonstrated. The method overcomes the synthetic challenge of achieving an aza-Claisen rearrangement of vinylogous N-allylic amide substrates, giving rise to a variety of highly modifiable oxazaborinine products. An investigation of the unique reactivity of these boron-based heterocycles has unveiled their underexplored potential as valuable building blocks and intermediates for organic synthesis.
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Affiliation(s)
- Cedric L Hugelshofer
- Department of Chemistry , University of California , Berkeley , California 94720 , United States
| | - Vignesh Palani
- Department of Chemistry , University of California , Berkeley , California 94720 , United States
| | - Richmond Sarpong
- Department of Chemistry , University of California , Berkeley , California 94720 , United States
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30
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Cai S, Shi H, Zhang Z, Wang X, Ma H, Gan N, Wu Q, Cheng Z, Ling K, Gu M, Ma C, Gu L, An Z, Huang W. Hydrogen-Bonded Organic Aromatic Frameworks for Ultralong Phosphorescence by Intralayer π-π Interactions. Angew Chem Int Ed Engl 2018; 57:4005-4009. [DOI: 10.1002/anie.201800697] [Citation(s) in RCA: 157] [Impact Index Per Article: 26.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Indexed: 01/27/2023]
Affiliation(s)
- Suzhi Cai
- Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM); Nanjing Tech University (NanjingTech); 30 South Puzhu Road Nanjing 211800 China
| | - Huifang Shi
- Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM); Nanjing Tech University (NanjingTech); 30 South Puzhu Road Nanjing 211800 China
| | - Zaiyong Zhang
- Pharmaceutical, Analytical, and Solid-State Chemistry Research Center; Shanghai Institute of Materia Medica, Chinese Academy of Sciences; Shanghai 201203 China
| | - Xuan Wang
- Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM); Nanjing Tech University (NanjingTech); 30 South Puzhu Road Nanjing 211800 China
| | - Huili Ma
- Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM); Nanjing Tech University (NanjingTech); 30 South Puzhu Road Nanjing 211800 China
| | - Nan Gan
- Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM); Nanjing Tech University (NanjingTech); 30 South Puzhu Road Nanjing 211800 China
| | - Qi Wu
- Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM); Nanjing Tech University (NanjingTech); 30 South Puzhu Road Nanjing 211800 China
| | - Zhichao Cheng
- Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM); Nanjing Tech University (NanjingTech); 30 South Puzhu Road Nanjing 211800 China
| | - Kun Ling
- Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM); Nanjing Tech University (NanjingTech); 30 South Puzhu Road Nanjing 211800 China
| | - Mingxing Gu
- Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM); Nanjing Tech University (NanjingTech); 30 South Puzhu Road Nanjing 211800 China
| | - Chaoqun Ma
- Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM); Nanjing Tech University (NanjingTech); 30 South Puzhu Road Nanjing 211800 China
| | - Long Gu
- Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM); Nanjing Tech University (NanjingTech); 30 South Puzhu Road Nanjing 211800 China
| | - Zhongfu An
- Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM); Nanjing Tech University (NanjingTech); 30 South Puzhu Road Nanjing 211800 China
| | - Wei Huang
- Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM); Nanjing Tech University (NanjingTech); 30 South Puzhu Road Nanjing 211800 China
- Shaanxi Institute of Flexible Electronics (SIFE); Northwestern Polytechnical University (NPU); 127 West Youyi Road Xi'an 710072 China
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31
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Cai S, Shi H, Zhang Z, Wang X, Ma H, Gan N, Wu Q, Cheng Z, Ling K, Gu M, Ma C, Gu L, An Z, Huang W. Hydrogen-Bonded Organic Aromatic Frameworks for Ultralong Phosphorescence by Intralayer π-π Interactions. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201800697] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Suzhi Cai
- Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM); Nanjing Tech University (NanjingTech); 30 South Puzhu Road Nanjing 211800 China
| | - Huifang Shi
- Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM); Nanjing Tech University (NanjingTech); 30 South Puzhu Road Nanjing 211800 China
| | - Zaiyong Zhang
- Pharmaceutical, Analytical, and Solid-State Chemistry Research Center; Shanghai Institute of Materia Medica, Chinese Academy of Sciences; Shanghai 201203 China
| | - Xuan Wang
- Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM); Nanjing Tech University (NanjingTech); 30 South Puzhu Road Nanjing 211800 China
| | - Huili Ma
- Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM); Nanjing Tech University (NanjingTech); 30 South Puzhu Road Nanjing 211800 China
| | - Nan Gan
- Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM); Nanjing Tech University (NanjingTech); 30 South Puzhu Road Nanjing 211800 China
| | - Qi Wu
- Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM); Nanjing Tech University (NanjingTech); 30 South Puzhu Road Nanjing 211800 China
| | - Zhichao Cheng
- Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM); Nanjing Tech University (NanjingTech); 30 South Puzhu Road Nanjing 211800 China
| | - Kun Ling
- Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM); Nanjing Tech University (NanjingTech); 30 South Puzhu Road Nanjing 211800 China
| | - Mingxing Gu
- Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM); Nanjing Tech University (NanjingTech); 30 South Puzhu Road Nanjing 211800 China
| | - Chaoqun Ma
- Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM); Nanjing Tech University (NanjingTech); 30 South Puzhu Road Nanjing 211800 China
| | - Long Gu
- Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM); Nanjing Tech University (NanjingTech); 30 South Puzhu Road Nanjing 211800 China
| | - Zhongfu An
- Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM); Nanjing Tech University (NanjingTech); 30 South Puzhu Road Nanjing 211800 China
| | - Wei Huang
- Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM); Nanjing Tech University (NanjingTech); 30 South Puzhu Road Nanjing 211800 China
- Shaanxi Institute of Flexible Electronics (SIFE); Northwestern Polytechnical University (NPU); 127 West Youyi Road Xi'an 710072 China
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32
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Fang X, Yan D. White-light emission and tunable room temperature phosphorescence of dibenzothiophene. Sci China Chem 2018. [DOI: 10.1007/s11426-017-9183-9] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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33
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Xiao L, Wu Y, Yu Z, Xu Z, Li J, Liu Y, Yao J, Fu H. Room-Temperature Phosphorescence in Pure Organic Materials: Halogen Bonding Switching Effects. Chemistry 2018; 24:1801-1805. [PMID: 29281148 DOI: 10.1002/chem.201705391] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Indexed: 12/31/2022]
Abstract
Organic room-temperature phosphorescence (ORTP), when combined with external stimuli-responsive capability, is very attractive for sensors and bio-imaging devices, but remains challenging. Herein, by doping two β-iminoenamine-BF2 derivatives (S-2CN and S-2I) into a 4-iodoaniline (I-Ph-NH2 ) crystalline matrix, the formation of S-2CN⋅⋅⋅I-Ph-NH2 and S-2I⋅⋅⋅I-Ph-NH2 halogen bonds leads to bright-red RTP emissions from these two host-guest doped crystals (hgDCs) with quantum efficiencies up to 13.43 % and 15.96 %, respectively. Upon treatment with HCl, the competition of I-Ph-NH2 ⋅HCl formation against S-2I⋅⋅⋅I-Ph-NH2 halogen bonding switches off the red RTP from S-2I/I-Ph-NH2 hgDCs, whereas the stable halogen-bonded S-2CN⋅⋅⋅I-Ph-NH2 ensures red RTP from S-2CN/I-Ph-NH2 hgDCs remains unchanged. A security protection luminescence pattern by using these different HCl-responsive RTP behaviors was designed.
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Affiliation(s)
- Lu Xiao
- Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Yishi Wu
- Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Zhenyi Yu
- Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Zhenzhen Xu
- Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,Beijing Key Laboratory for Optical Materials and Photonic Devices, Department of Chemistry, Capital Normal University, Beijing, 100048, P. R. China
| | - Jinbiao Li
- Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Yanping Liu
- Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Jiannian Yao
- Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Hongbing Fu
- Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,Beijing Key Laboratory for Optical Materials and Photonic Devices, Department of Chemistry, Capital Normal University, Beijing, 100048, P. R. China.,Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, Tianjin University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, P. R. China
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34
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Duan W, Liu Q, Huo Y, Cui J, Gong S, Liu Z. AIE-active boron complexes based on benzothiazole–hydrazone chelates. Org Biomol Chem 2018; 16:4977-4984. [DOI: 10.1039/c8ob00755a] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A new family of benzothiazole–hydrazone-based monoboron and bisboron complexes with aggregation-induced emission (AIE) was developed.
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Affiliation(s)
- Wenzeng Duan
- Institute of Functional Organic Molecules and Materials
- School of Chemistry and Chemical Engineering
- Liaocheng University
- Liaocheng
- People's Republic of China
| | - Qingsong Liu
- Institute of Functional Organic Molecules and Materials
- School of Chemistry and Chemical Engineering
- Liaocheng University
- Liaocheng
- People's Republic of China
| | - Yanmin Huo
- Institute of Functional Organic Molecules and Materials
- School of Chemistry and Chemical Engineering
- Liaocheng University
- Liaocheng
- People's Republic of China
| | - Jichun Cui
- Institute of Functional Organic Molecules and Materials
- School of Chemistry and Chemical Engineering
- Liaocheng University
- Liaocheng
- People's Republic of China
| | - Shuwen Gong
- Institute of Functional Organic Molecules and Materials
- School of Chemistry and Chemical Engineering
- Liaocheng University
- Liaocheng
- People's Republic of China
| | - Zhipeng Liu
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM)
- Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM)
- Nanjing Tech University (Nanjing Tech)
- Nanjing
- P.R. China
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35
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Yu Y, Kwon MS, Jung J, Zeng Y, Kim M, Chung K, Gierschner J, Youk JH, Borisov SM, Kim J. Room‐Temperature‐Phosphorescence‐Based Dissolved Oxygen Detection by Core‐Shell Polymer Nanoparticles Containing Metal‐Free Organic Phosphors. Angew Chem Int Ed Engl 2017; 56:16207-16211. [DOI: 10.1002/anie.201708606] [Citation(s) in RCA: 122] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Revised: 09/27/2017] [Indexed: 11/05/2022]
Affiliation(s)
- Youngchang Yu
- Department of Materials Science and Engineering University of Michigan USA
| | - Min Sang Kwon
- Department of Materials Science and Engineering University of Michigan USA
- Department of Materials Science and Engineering Ulsan Institute of Science and Technology (UNIST) Korea
| | - Jaehun Jung
- Macromolecular Science and Engineering University of Michigan USA
| | - Yingying Zeng
- Department of Materials Science and Engineering University of Michigan USA
| | - Mounggon Kim
- Department of Materials Science and Engineering University of Michigan USA
| | - Kyeongwoon Chung
- Macromolecular Science and Engineering University of Michigan USA
- Process Innovation Department Korea Institute of Materials Science (KIMS) Korea
| | | | - Ji Ho Youk
- Department of Applied Organic Materials Engineering Inha University Korea
| | - Sergey M. Borisov
- Institute of Analytical Chemistry and Food Chemistry Graz University of Technology Austria
| | - Jinsang Kim
- Department of Materials Science and Engineering University of Michigan USA
- Macromolecular Science and Engineering University of Michigan USA
- Department of Chemical Engineering Department of Biomedical Engineering, and Department of Chemistry University of Michigan USA
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36
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Yu Y, Kwon MS, Jung J, Zeng Y, Kim M, Chung K, Gierschner J, Youk JH, Borisov SM, Kim J. Room‐Temperature‐Phosphorescence‐Based Dissolved Oxygen Detection by Core‐Shell Polymer Nanoparticles Containing Metal‐Free Organic Phosphors. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201708606] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Youngchang Yu
- Department of Materials Science and Engineering University of Michigan USA
| | - Min Sang Kwon
- Department of Materials Science and Engineering University of Michigan USA
- Department of Materials Science and Engineering Ulsan Institute of Science and Technology (UNIST) Korea
| | - Jaehun Jung
- Macromolecular Science and Engineering University of Michigan USA
| | - Yingying Zeng
- Department of Materials Science and Engineering University of Michigan USA
| | - Mounggon Kim
- Department of Materials Science and Engineering University of Michigan USA
| | - Kyeongwoon Chung
- Macromolecular Science and Engineering University of Michigan USA
- Process Innovation Department Korea Institute of Materials Science (KIMS) Korea
| | | | - Ji Ho Youk
- Department of Applied Organic Materials Engineering Inha University Korea
| | - Sergey M. Borisov
- Institute of Analytical Chemistry and Food Chemistry Graz University of Technology Austria
| | - Jinsang Kim
- Department of Materials Science and Engineering University of Michigan USA
- Macromolecular Science and Engineering University of Michigan USA
- Department of Chemical Engineering Department of Biomedical Engineering, and Department of Chemistry University of Michigan USA
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37
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38
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Chai Z, Wang C, Wang J, Liu F, Xie Y, Zhang YZ, Li JR, Li Q, Li Z. Abnormal room temperature phosphorescence of purely organic boron-containing compounds: the relationship between the emissive behaviorand the molecular packing, and the potential related applications. Chem Sci 2017; 8:8336-8344. [PMID: 29619180 PMCID: PMC5858747 DOI: 10.1039/c7sc04098a] [Citation(s) in RCA: 97] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Accepted: 10/09/2017] [Indexed: 12/15/2022] Open
Abstract
Purely organic materials with the characteristic of room-temperature phosphorescence (RTP) under ambient conditions demonstrate potential benefits in advanced optoelectronic applications. Exploration of versatile and efficient RTP compounds with low prices is full of challenges due to the slow intersystem crossing process and ultrafast deactivation of the active excited states of organic compounds. Here, a series of boron-containing phosphors were found to present RTP with long-lived lifetimes. Among these commercially available and cheap compounds, (4-methoxyphenyl)boronic acid (PBA-MeO) exhibits long-lived RTP, with a lifetime of 2.24 s, which is among the longest lifetimes of single-component small molecules. Our extensive experiments illustrate that both a rigid conformation and expanded conjugation induced by molecular alignment contribute to the persistent RTP. Because of strong intermolecular interactions via hydrogen bonds, these arylboronic acids easily form crystals and are quite appropriate for anti-forgery materials. Subsequently, we develop a precise, speedy and convenient inkjet printing technology for the fabrication of optoelectronic displays. Furthermore, PBA-MeO is used as an additive to feed Bombyx mori silkworms and shows low toxicity over inorganic materials. Our findings may pave a new way for the development of RTP phosphors and promote their use in practical applications.
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Affiliation(s)
- Zhaofei Chai
- Department of Chemistry , Hubei Key Lab on Organic and Polymeric Opto-Electronic Materials , Wuhan University , Wuhan 430072 , China .
| | - Can Wang
- Department of Chemistry , Hubei Key Lab on Organic and Polymeric Opto-Electronic Materials , Wuhan University , Wuhan 430072 , China .
| | - Jinfeng Wang
- Department of Chemistry , Hubei Key Lab on Organic and Polymeric Opto-Electronic Materials , Wuhan University , Wuhan 430072 , China .
| | - Fan Liu
- Department of Chemistry , Hubei Key Lab on Organic and Polymeric Opto-Electronic Materials , Wuhan University , Wuhan 430072 , China .
| | - Yujun Xie
- Department of Chemistry , Hubei Key Lab on Organic and Polymeric Opto-Electronic Materials , Wuhan University , Wuhan 430072 , China .
| | - Yong-Zheng Zhang
- Department of Chemistry and Chemical Engineering , Beijing University of Technology , Beijing 100124 , China
| | - Jian-Rong Li
- Department of Chemistry and Chemical Engineering , Beijing University of Technology , Beijing 100124 , China
| | - Qianqian Li
- Department of Chemistry , Hubei Key Lab on Organic and Polymeric Opto-Electronic Materials , Wuhan University , Wuhan 430072 , China .
| | - Zhen Li
- Department of Chemistry , Hubei Key Lab on Organic and Polymeric Opto-Electronic Materials , Wuhan University , Wuhan 430072 , China .
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39
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Wang Q, Zhou H. Ammonium Arylspiroborate Compounds: Synthesis, Crystal Structure, Fluorescence Properties, and Antibacterial Activity. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00435] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Qiaoyun Wang
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, 693 Xiongchu Avenue, Wuhan 430073, People’s Republic of China
| | - Hong Zhou
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, 693 Xiongchu Avenue, Wuhan 430073, People’s Republic of China
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40
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Xie Y, Ge Y, Peng Q, Li C, Li Q, Li Z. How the Molecular Packing Affects the Room Temperature Phosphorescence in Pure Organic Compounds: Ingenious Molecular Design, Detailed Crystal Analysis, and Rational Theoretical Calculations. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1606829. [PMID: 28221726 DOI: 10.1002/adma.201606829] [Citation(s) in RCA: 200] [Impact Index Per Article: 28.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2016] [Revised: 01/13/2017] [Indexed: 05/22/2023]
Abstract
Long-lived phosphorescence at room temperature (RTP) from pure organic molecules is rare. Recent research reveals various crystalline organic molecules can realize RTP with lifetimes extending to the magnitude of second. There is little research on how molecular packing affecting RTP. Three compounds are designed with similar optical properties in solution, but tremendously different solid emission characteristics. By investigating the molecular packing arrangement in single crystals, it is found that the packing style of the compact face to face favors of long phosphorescence lifetime and high photoluminescence efficiency, with the lifetime up to 748 ms observed in the crystal of CPM ((9H-carbazol-9-yl)(phenyl)methanone). Theoretical calculation analysis also reveals this kind of packing style can remarkably reduce the singlet excited energy level and prompt electron communication between dimers. Surprisingly, CPM has two very similar single crystals, labeled as CPM and CPM-A, with almost identical crystal data, and the only difference is that molecules in CPM-A crystal take a little looser packing arrangement. X-ray diffraction and cross-polarization under magic spinning 13 C NMR spectra double confirm that they are different crystals. Interestingly, CPM-A crystal shows negligible RTP compared to the CPM crystal, once again proving that the packing style is critical to the RTP property.
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Affiliation(s)
- Yujun Xie
- Department of Chemistry, Hubei Key Lab on Organic and Polymeric Opto-Electronic Materials, Wuhan University, Wuhan, 430072, China
| | - Yuwei Ge
- China State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, The Chinese Academy of Sciences, Wuhan, 430071, China
| | - Qian Peng
- Key Laboratory of Organic Solids, Beijing National Laboratory for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Conggang Li
- China State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, The Chinese Academy of Sciences, Wuhan, 430071, China
| | - Qianqian Li
- Department of Chemistry, Hubei Key Lab on Organic and Polymeric Opto-Electronic Materials, Wuhan University, Wuhan, 430072, China
| | - Zhen Li
- Department of Chemistry, Hubei Key Lab on Organic and Polymeric Opto-Electronic Materials, Wuhan University, Wuhan, 430072, China
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41
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Yu Z, Wu Y, Xiao L, Chen J, Liao Q, Yao J, Fu H. Organic Phosphorescence Nanowire Lasers. J Am Chem Soc 2017; 139:6376-6381. [PMID: 28414231 DOI: 10.1021/jacs.7b01574] [Citation(s) in RCA: 91] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Organic solid-state lasers (OSSLs) based on singlet fluorescence have merited intensive study as an important class of light sources. Although the use of triplet phosphors has led to 100% internal quantum efficiency in organic light-emitting diodes (OLEDs), stumbling blocks in triplet lasing include generally forbidden intersystem crossing (ISC) and a low quantum yield of phosphorescence (ΦP). Here, we reported the first triplet-phosphorescence OSSL from a nanowire microcavity of a sulfide-substituted difluoroboron compound. As compared with the unsubstituted parent compound, the lone pair of electrons of sulfur substitution plus the intramolecular charge transfer interaction introduced by the nitro moiety lead to an highly efficient T1 (π,π*) ← S1 (n,π*) ISC (ΦISC = 100%) and a moderate ΦP (10%). This, plus the optical feedback provided by nanowire Fabry-Perot microcavity, enables triplet-phosphorescence OSSL emission at 650 nm under pulsed excitation. Our results open the door for a whole new class of laser materials based on previously untapped triplet phosphors.
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Affiliation(s)
- Zhenyi Yu
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, Tianjin University, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) , Tianjin 300072, People's Republic of China.,Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, People's Republic of China.,Graduate University of Chinese Academy of Sciences , Beijing 100049, People's Republic of China
| | - Yishi Wu
- Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, People's Republic of China
| | - Lu Xiao
- Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, People's Republic of China.,Graduate University of Chinese Academy of Sciences , Beijing 100049, People's Republic of China
| | - Jianwei Chen
- Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, People's Republic of China.,Graduate University of Chinese Academy of Sciences , Beijing 100049, People's Republic of China
| | - Qing Liao
- Department of Chemistry, Capital Normal University , Beijing 100048, People's Republic of China
| | - Jiannian Yao
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, Tianjin University, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) , Tianjin 300072, People's Republic of China.,Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, People's Republic of China.,Graduate University of Chinese Academy of Sciences , Beijing 100049, People's Republic of China
| | - Hongbing Fu
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, Tianjin University, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) , Tianjin 300072, People's Republic of China.,Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, People's Republic of China.,Department of Chemistry, Capital Normal University , Beijing 100048, People's Republic of China
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42
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Shoji Y, Ikabata Y, Wang Q, Nemoto D, Sakamoto A, Tanaka N, Seino J, Nakai H, Fukushima T. Unveiling a New Aspect of Simple Arylboronic Esters: Long-Lived Room-Temperature Phosphorescence from Heavy-Atom-Free Molecules. J Am Chem Soc 2017; 139:2728-2733. [PMID: 28135418 DOI: 10.1021/jacs.6b11984] [Citation(s) in RCA: 160] [Impact Index Per Article: 22.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Arylboronic esters can be used as versatile reagents in organic synthesis, as represented by Suzuki-Miyaura cross-coupling. Here we report a serendipitous finding that simple arylboronic esters are phosphorescent in the solid state at room temperature with a lifetime on the order of several seconds. The phosphorescence properties of arylboronic esters are remarkable in light of the general notion that phosphorescent organic molecules require heavy atoms and/or carbonyl groups for the efficient generation of a triplet excited state. Theoretical calculations on phenylboronic acid pinacol ester indicated that this molecule undergoes an out-of-plane distortion at the (pinacol)B-Cipso moiety in the T1 excited state, which is responsible for its phosphorescence. A compound survey with 19 arylboron compounds suggested that the phosphorescence properties might be determined by solid-state molecular packing rather than by the patterns and numbers of boron substituents on the aryl units. The present finding may update the general notion of phosphorescent organic molecules.
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Affiliation(s)
- Yoshiaki Shoji
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology , 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
| | | | - Qi Wang
- CREST, Japan Science and Technology Agency , Kawaguchi, Saitama 332-0012, Japan
| | - Daisuke Nemoto
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology , 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
| | - Atsushi Sakamoto
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology , 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
| | - Naoki Tanaka
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology , 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
| | - Junji Seino
- CREST, Japan Science and Technology Agency , Kawaguchi, Saitama 332-0012, Japan
| | - Hiromi Nakai
- CREST, Japan Science and Technology Agency , Kawaguchi, Saitama 332-0012, Japan.,Elements Strategy Initiative for Catalysts and Batteries (ESICB), Kyoto University , Saikyo-ku, Kyoto 615-8245, Japan
| | - Takanori Fukushima
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology , 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
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43
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Gao R, Yan D. Layered host-guest long-afterglow ultrathin nanosheets: high-efficiency phosphorescence energy transfer at 2D confined interface. Chem Sci 2017; 8:590-599. [PMID: 28451206 PMCID: PMC5358535 DOI: 10.1039/c6sc03515a] [Citation(s) in RCA: 159] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2016] [Accepted: 09/02/2016] [Indexed: 12/20/2022] Open
Abstract
Tuning and optimizing the efficiency of light energy transfer play an important role in meeting modern challenges of minimizing energy loss and developing high-performance optoelectronic materials. However, attempts to fabricate systems giving highly efficient energy transfer between luminescent donor and acceptor have achieved limited success to date. Herein, we present a strategy towards phosphorescence energy transfer at a 2D orderly crystalline interface. We first show that new ultrathin nanosheet materials giving long-afterglow luminescence can be obtained by assembling aromatic guests into a layered double hydroxide host. Furthermore, we demonstrate that co-assembly of these long-lived energy donors with an energy acceptor in the same host generates an ordered arrangement of phosphorescent donor-acceptor pairs spatially confined within the 2D nanogallery, which affords energy transfer efficiency as high as 99.7%. Therefore, this work offers an alternative route to develop new types of long-afterglow nanohybrids and efficient light transfer systems with potential energy, illumination and sensor applications.
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Affiliation(s)
- Rui Gao
- State Key Laboratory of Chemical Resource Engineering , Beijing University of Chemical Technology , Beijing 100029 , P. R. China .
| | - Dongpeng Yan
- State Key Laboratory of Chemical Resource Engineering , Beijing University of Chemical Technology , Beijing 100029 , P. R. China .
- Beijing Key Laboratory of Energy Conversion and Storage Materials , College of Chemistry , Beijing Normal University , Beijing 100875 , P. R. China .
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Tanaka K, Nishino K, Ito S, Yamane H, Suenaga K, Hashimoto K, Chujo Y. Development of solid-state emissive o-carboranes and theoretical investigation of the mechanism of the aggregation-induced emission behaviors of organoboron “element-blocks”. Faraday Discuss 2017; 196:31-42. [DOI: 10.1039/c6fd00155f] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This paper presents the aggregation-induced emission (AIE) properties of o-carborane derivatives and proposes a potential strategy for constructing AIE-active organoboron complexes via the enhancement of freedom of intramolecular mobility. Initially, the optical properties of o-carborane derivatives with or without the fused ring structure at the C–C bond in o-carborane in which elongation should be induced by photo-excitation according to theoretical calculations were compared. Accordingly, it was shown that large mobility at the C–C bond in o-carborane should be responsible for the annihilation of emission in solution, leading to the AIE property. From this result, it was presumed that by enhancing the freedom of intramolecular mobility in conventional luminescent organoboron complexes, the deactivation of the excited state in solution and emission recovery in the aggregate can be induced. Based on this idea, we have performed several studies and introduce two representative results. Firstly, the decrease in luminescent properties of boron dipyrromethene (BODIPY) in solution by introducing a movable functional group is explained. Next, the AIE behaviors of boron ketoiminates and the potential mechanism concerning conformational changes for the deactivation of the excited state in the solution state are illustrated. It is proposed that enhancement of the freedom of mobility in the excited state of luminescent organoboron complexes could be a potential strategy for realizing AIE behaviors.
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Affiliation(s)
- Kazuo Tanaka
- Department of Polymer Chemistry
- Graduate School of Engineering
- Kyoto University
- Kyoto 615-8510
- Japan
| | - Kenta Nishino
- Department of Polymer Chemistry
- Graduate School of Engineering
- Kyoto University
- Kyoto 615-8510
- Japan
| | - Shunichiro Ito
- Department of Polymer Chemistry
- Graduate School of Engineering
- Kyoto University
- Kyoto 615-8510
- Japan
| | - Honami Yamane
- Department of Polymer Chemistry
- Graduate School of Engineering
- Kyoto University
- Kyoto 615-8510
- Japan
| | - Kazumasa Suenaga
- Department of Polymer Chemistry
- Graduate School of Engineering
- Kyoto University
- Kyoto 615-8510
- Japan
| | - Kazushi Hashimoto
- Department of Polymer Chemistry
- Graduate School of Engineering
- Kyoto University
- Kyoto 615-8510
- Japan
| | - Yoshiki Chujo
- Department of Polymer Chemistry
- Graduate School of Engineering
- Kyoto University
- Kyoto 615-8510
- Japan
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45
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Xu B, Wu H, Chen J, Yang Z, Yang Z, Wu YC, Zhang Y, Jin C, Lu PY, Chi Z, Liu S, Xu J, Aldred M. White-light emission from a single heavy atom-free molecule with room temperature phosphorescence, mechanochromism and thermochromism. Chem Sci 2016; 8:1909-1914. [PMID: 28553481 PMCID: PMC5430137 DOI: 10.1039/c6sc03038f] [Citation(s) in RCA: 99] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2016] [Accepted: 11/01/2016] [Indexed: 12/16/2022] Open
Abstract
Two heavy atom-free white-light emitting luminophores exhibit fluorescence–phosphorescence dual-emission and are multi-stimuli responsive at room temperature.
Two heavy atom-free luminophores (SHB2t and SDB2t) with simple molecular structures have been synthesized via Suzuki coupling reactions in which both display white-light emission with prompt fluorescence and room temperature phosphorescence (RTP) in the solid state. The impressive RTP of the luminophores is produced by a synergistic effect of the strong intermolecular hydrogen bonding in addition to the spin–orbit coupling of the sulfonyl oxygen atoms and the moderate singlet-triplet energy gaps (ΔEST). These factors facilitate the intersystem crossing (ISC) process to generate triplet excitons in which the molecular conformations become immobilized to effectively suppress radiationless decay. Under the stimuli of mechanical force and solvent vapor, the RTP of SHB2t and SDB2t can be simply turned off and on by breaking and reforming the robust hydrogen bonding, which leads to remarkable and reversible mechanochromism between white and deep-blue emission. Moreover, two different thermochromic processes have been observed for the pristine and ground samples of SDB2t, in which a tricolor switching system between white, deep-blue and blue emission has been successfully achieved through the sequential control of grinding, heating and fuming. From detailed studies we have determined that the mechanism for the thermochromism of SDB2t is correlated with the rearrangement of the white-light emitting molecules to a new packing mode without RTP emission.
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Affiliation(s)
- Bingjia Xu
- PCFM Lab , GD HPPC Lab , Guangdong Engineering Technology Research Center for High-performance Organic and Polymer Photoelectric Functional Films , State Key Laboratory of Optoelectronic Material and Technologies , School of Chemistry and Chemical Engineering , Sun Yat-Sen University , Guangzhou 510275 , China . ; ; ; ; Tel: +86 20 84112712.,State Key Laboratory of Optoelectronic Material and Technologies , School of Physics and Engineering , Sun Yat-sen University , Guangzhou 510275 , China
| | - Haozhong Wu
- PCFM Lab , GD HPPC Lab , Guangdong Engineering Technology Research Center for High-performance Organic and Polymer Photoelectric Functional Films , State Key Laboratory of Optoelectronic Material and Technologies , School of Chemistry and Chemical Engineering , Sun Yat-Sen University , Guangzhou 510275 , China . ; ; ; ; Tel: +86 20 84112712
| | - Junru Chen
- PCFM Lab , GD HPPC Lab , Guangdong Engineering Technology Research Center for High-performance Organic and Polymer Photoelectric Functional Films , State Key Laboratory of Optoelectronic Material and Technologies , School of Chemistry and Chemical Engineering , Sun Yat-Sen University , Guangzhou 510275 , China . ; ; ; ; Tel: +86 20 84112712
| | - Zhan Yang
- PCFM Lab , GD HPPC Lab , Guangdong Engineering Technology Research Center for High-performance Organic and Polymer Photoelectric Functional Films , State Key Laboratory of Optoelectronic Material and Technologies , School of Chemistry and Chemical Engineering , Sun Yat-Sen University , Guangzhou 510275 , China . ; ; ; ; Tel: +86 20 84112712
| | - Zhiyong Yang
- PCFM Lab , GD HPPC Lab , Guangdong Engineering Technology Research Center for High-performance Organic and Polymer Photoelectric Functional Films , State Key Laboratory of Optoelectronic Material and Technologies , School of Chemistry and Chemical Engineering , Sun Yat-Sen University , Guangzhou 510275 , China . ; ; ; ; Tel: +86 20 84112712
| | - Yuan-Chun Wu
- Shenzhen China Star Optoelectronics Technology Co., Ltd , Shenzhen 518107 , China
| | - Yi Zhang
- PCFM Lab , GD HPPC Lab , Guangdong Engineering Technology Research Center for High-performance Organic and Polymer Photoelectric Functional Films , State Key Laboratory of Optoelectronic Material and Technologies , School of Chemistry and Chemical Engineering , Sun Yat-Sen University , Guangzhou 510275 , China . ; ; ; ; Tel: +86 20 84112712
| | - Chongjun Jin
- State Key Laboratory of Optoelectronic Material and Technologies , School of Physics and Engineering , Sun Yat-sen University , Guangzhou 510275 , China
| | - Po-Yen Lu
- Shenzhen China Star Optoelectronics Technology Co., Ltd , Shenzhen 518107 , China
| | - Zhenguo Chi
- PCFM Lab , GD HPPC Lab , Guangdong Engineering Technology Research Center for High-performance Organic and Polymer Photoelectric Functional Films , State Key Laboratory of Optoelectronic Material and Technologies , School of Chemistry and Chemical Engineering , Sun Yat-Sen University , Guangzhou 510275 , China . ; ; ; ; Tel: +86 20 84112712
| | - Siwei Liu
- PCFM Lab , GD HPPC Lab , Guangdong Engineering Technology Research Center for High-performance Organic and Polymer Photoelectric Functional Films , State Key Laboratory of Optoelectronic Material and Technologies , School of Chemistry and Chemical Engineering , Sun Yat-Sen University , Guangzhou 510275 , China . ; ; ; ; Tel: +86 20 84112712
| | - Jiarui Xu
- PCFM Lab , GD HPPC Lab , Guangdong Engineering Technology Research Center for High-performance Organic and Polymer Photoelectric Functional Films , State Key Laboratory of Optoelectronic Material and Technologies , School of Chemistry and Chemical Engineering , Sun Yat-Sen University , Guangzhou 510275 , China . ; ; ; ; Tel: +86 20 84112712
| | - Matthew Aldred
- Department of Chemistry , Durham University , DH1 3LE , UK
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Gutierrez GD, Sazama GT, Wu T, Baldo MA, Swager TM. Red Phosphorescence from Benzo[2,1,3]thiadiazoles at Room Temperature. J Org Chem 2016; 81:4789-96. [PMID: 27211248 PMCID: PMC4892972 DOI: 10.1021/acs.joc.6b00789] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We describe the red phosphorescence exhibited by a class of structurally simple benzo[2,1,3]thiadiazoles at room temperature. The photophysical properties of these molecules in deoxygenated cyclohexane, including their absorption spectra, steady-state photoluminescence and excitation spectra, and phosphorescence lifetimes, are presented. Time-dependent density functional theory calculations were carried out to better understand the electronic excited states of these benzo[2,1,3]thiadiazoles and why they are capable of phosphorescence.
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Affiliation(s)
- Gregory D. Gutierrez
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139, United States
| | - Graham T. Sazama
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139, United States
| | - Tony Wu
- Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA 02139, United States
| | - Marc A. Baldo
- Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA 02139, United States
| | - Timothy M. Swager
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139, United States
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47
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Jiang K, Zhang L, Lu J, Xu C, Cai C, Lin H. Triple-Mode Emission of Carbon Dots: Applications for Advanced Anti-Counterfeiting. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201602445] [Citation(s) in RCA: 91] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Kai Jiang
- Key Laboratory of Additive Manufacturing Materials of Zhejiang Province; Ningbo Institute of Materials Technology & Engineering (NIMTE); Chinese Academy Sciences; Ningbo 315201 China
- Department of Applied Physics; Chongqing University; Chongqing 401331 China
| | - Ling Zhang
- Key Laboratory of Additive Manufacturing Materials of Zhejiang Province; Ningbo Institute of Materials Technology & Engineering (NIMTE); Chinese Academy Sciences; Ningbo 315201 China
| | - Junfeng Lu
- State Key Laboratory of Bioelectronics, School of Electronic Science and Engineering; Southeast University; Nanjing 210096 China
| | - Chunxiang Xu
- State Key Laboratory of Bioelectronics, School of Electronic Science and Engineering; Southeast University; Nanjing 210096 China
| | - Congzhong Cai
- Department of Applied Physics; Chongqing University; Chongqing 401331 China
| | - Hengwei Lin
- Key Laboratory of Additive Manufacturing Materials of Zhejiang Province; Ningbo Institute of Materials Technology & Engineering (NIMTE); Chinese Academy Sciences; Ningbo 315201 China
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48
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Jiang K, Zhang L, Lu J, Xu C, Cai C, Lin H. Triple-Mode Emission of Carbon Dots: Applications for Advanced Anti-Counterfeiting. Angew Chem Int Ed Engl 2016; 55:7231-5. [PMID: 27135645 DOI: 10.1002/anie.201602445] [Citation(s) in RCA: 342] [Impact Index Per Article: 42.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Indexed: 01/24/2023]
Abstract
Photoluminescence (PL), up-conversion PL (UCPL), and phosphorescence are three kinds of phenomena common to light-emitting materials, but it is very difficult to observe all of them simultaneously when they are derived from a single material at room temperature. For the first time, triple-mode emission (that is, PL, UCPL, and room temperature phosphorescence (RTP)) is reported, which relies on a composite of the luminescent carbon dots (CDs) prepared from m-phenylenediamine and poly(vinyl alcohol) (PVA). Moreover, the CDs-PVA aqueous dispersion is nearly colorless and demonstrates promise as a triple-mode emission ink in the field of advanced anti-counterfeiting.
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Affiliation(s)
- Kai Jiang
- Key Laboratory of Additive Manufacturing Materials of Zhejiang Province, Ningbo Institute of Materials Technology & Engineering (NIMTE), Chinese Academy Sciences, Ningbo, 315201, China.,Department of Applied Physics, Chongqing University, Chongqing, 401331, China
| | - Ling Zhang
- Key Laboratory of Additive Manufacturing Materials of Zhejiang Province, Ningbo Institute of Materials Technology & Engineering (NIMTE), Chinese Academy Sciences, Ningbo, 315201, China
| | - Junfeng Lu
- State Key Laboratory of Bioelectronics, School of Electronic Science and Engineering, Southeast University, Nanjing, 210096, China
| | - Chunxiang Xu
- State Key Laboratory of Bioelectronics, School of Electronic Science and Engineering, Southeast University, Nanjing, 210096, China
| | - Congzhong Cai
- Department of Applied Physics, Chongqing University, Chongqing, 401331, China
| | - Hengwei Lin
- Key Laboratory of Additive Manufacturing Materials of Zhejiang Province, Ningbo Institute of Materials Technology & Engineering (NIMTE), Chinese Academy Sciences, Ningbo, 315201, China.
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49
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Zeng T, Goel P. Design of Small Intramolecular Singlet Fission Chromophores: An Azaborine Candidate and General Small Size Effects. J Phys Chem Lett 2016; 7:1351-1358. [PMID: 27007577 DOI: 10.1021/acs.jpclett.6b00356] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We report the first attempt to design small intramolecular singlet fission chromophores, with the aid of quantum chemistry and explicitly simulating the time evolution of state populations using quantum dynamics method. We start with three previously proposed azaborine-substituted intermolecular singlet fission chromophores. Through analyzing their frontier orbital amplitudes, we select a BN-substituted azulene as the building block. Covalently connecting two such monomers and tuning their relative configuration, we examine three dimers. One dimer is found to be an eminent candidate: the triplet-pair state is quickly formed within 1 ps, and the two triplets are ready to be disentangled. We elucidate the general small size effects in intramolecular singlet fission and focus on specific aspects which should be taken care of when manipulating the fission rate through steric hindrance.
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Affiliation(s)
- Tao Zeng
- Department of Chemistry, Carleton University , Ottawa, Ontario K1S5B6, Canada
| | - Prateek Goel
- Department of Chemistry, University of Waterloo , Waterloo, Ontario N2L3G1, Canada
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50
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Butler T, Morris WA, Samonina-Kosicka J, Fraser CL. Mechanochromic Luminescence and Aggregation Induced Emission of Dinaphthoylmethane β-Diketones and Their Boronated Counterparts. ACS APPLIED MATERIALS & INTERFACES 2016; 8:1242-51. [PMID: 26735315 DOI: 10.1021/acsami.5b09688] [Citation(s) in RCA: 104] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Mechanochromic luminescence has been observed in many boron coordinated β-diketonate (BF2bdk) complexes. Recently, it was shown that the metal-free methoxy-substituted dinaphthoylmethane β-diketone (dnmOMe) also displayed aggregation induced emission (AIE), solvatochromism, and high contrast mechanochromic luminescence (ML) that recovered rapidly at room temperature. In order to understand how substituents and boron coordination affect solution and solid-state optical properties, a series of methoxy- and bromo-substituted derivatives (dnm, dnmOMe, dnmBr, and dnmBrOMe) and their corresponding boron complexes (BF2dnm, BF2dnmOMe, BF2dnmBr, and BF2dnmBrOMe) were synthesized and their AIE, ML, and room temperature recovery properties were compared. All boron complexes exhibited red-shifted absorption and emission, in addition to larger solution and solid-state quantum yields than β-diketones. While AIE studies show increased emission for dnmOMe and dnmBrOMe, the emission of corresponding boron complexes diminished upon aggregation. However, boron complexes were still strongly emissive in the solid state. ML properties were investigated using spin-cast films. Smearing resulted in the appearance of blue-green emission in ligands and a color change from green to yellow-orange in boron complexes. Bromide substituted derivatives showed increased room temperature recovery times compared to other dnm ligands, and boron complexes show only partial recovery over several days.
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Affiliation(s)
- Tristan Butler
- Department of Chemistry, University of Virginia , McCormick Road, Charlottesville, Virginia 22904, United States
| | - William A Morris
- Department of Chemistry, University of Virginia , McCormick Road, Charlottesville, Virginia 22904, United States
| | - Jelena Samonina-Kosicka
- Department of Chemistry, University of Virginia , McCormick Road, Charlottesville, Virginia 22904, United States
| | - Cassandra L Fraser
- Department of Chemistry, University of Virginia , McCormick Road, Charlottesville, Virginia 22904, United States
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