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Mizuno A, Matsuoka R, Kimura S, Ochiai K, Kusamoto T. Spin-Correlated Luminescence of a Carbazole-Containing Diradical Emitter: Single-Molecule Magnetoluminescence and Thermally Activated Emission. J Am Chem Soc 2024; 146:18470-18483. [PMID: 38921686 DOI: 10.1021/jacs.4c03972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/27/2024]
Abstract
Luminescent radicals have been intensively studied as a new class of materials exhibiting novel photofunctions unique to open-shell systems. When luminescent radicals are assembled, intriguing spin-correlated luminescence phenomena emerge, including excimer-like emission and magnetic-field effects on luminescence (i.e., magnetoluminescence, MagLum). However, the underlying mechanisms of these phenomena arising from spin multiplicity and spin-dependent excited-state dynamics are poorly understood due to the limited number of luminescent polyradical systems available for study. In particular, the correlation between stronger intramolecular exchange interactions (|2J/kB| > ∼10 K, where J and kB are the intramolecular exchange coupling constant and the Boltzmann constant, respectively) and luminescence properties has not been fully explained. In this study, a novel carbazole-containing diradical emitter (1) and the corresponding monoradical (2) were prepared for the in-depth study of spin-correlated luminescence properties, with luminescence measurements under magnetic fields of up to 18 T. Diradical 1 has a negative 2J/kB value of several tens of kelvin and exhibits a single-molecule MagLum and thermally activated luminescence, whereas 2 does not. Detailed quantitative analyses revealed that both the spin-correlated luminescence properties of 1 are strongly dominated by ground-state spin statistics based on the Boltzmann distribution (i.e., 2J/kB values). Furthermore, diradical 1 exhibits external heavy-atom effects in heavy-atom-containing solvents such as iodobenzene, whereas monoradical 2 does not. This is the first experimental verification of external heavy-atom effects in polyradical emitters. This work demonstrates that polyradical emitters can be designed based on spin degrees of freedom in both ground and excited states.
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Affiliation(s)
- Asato Mizuno
- Department of Life and Coordination-Complex Molecular Science, Institute for Molecular Science, 5-1 Higashiyama, Myodaiji, Okazaki, Aichi 444-8787, Japan
- Division of Chemistry, Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, Japan
| | - Ryota Matsuoka
- Department of Life and Coordination-Complex Molecular Science, Institute for Molecular Science, 5-1 Higashiyama, Myodaiji, Okazaki, Aichi 444-8787, Japan
- Division of Chemistry, Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, Japan
- SOKENDAI (The Graduate University for Advanced Studies), Shonan Village, Hayama, Kanagawa 240-0193, Japan
| | - Shojiro Kimura
- Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan
| | - Keisuke Ochiai
- SOKENDAI (The Graduate University for Advanced Studies), Shonan Village, Hayama, Kanagawa 240-0193, Japan
| | - Tetsuro Kusamoto
- Department of Life and Coordination-Complex Molecular Science, Institute for Molecular Science, 5-1 Higashiyama, Myodaiji, Okazaki, Aichi 444-8787, Japan
- Division of Chemistry, Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, Japan
- SOKENDAI (The Graduate University for Advanced Studies), Shonan Village, Hayama, Kanagawa 240-0193, Japan
- JST-PRESTO, 4-1-8, Honcho, Kawaguchi, Saitama 332-0012, Japan
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2
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Mallick S, Kollimalaian K, Chetti P, Parthasarathy V. Chasing Turns and Twists: Unraveling the One-Step Synthesis, Intricate Pathways, and Structural Revelations of N-Aryl Aza-quasi[8]circulenes. Chemistry 2024; 30:e202302876. [PMID: 37747146 DOI: 10.1002/chem.202302876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 09/23/2023] [Accepted: 09/25/2023] [Indexed: 09/26/2023]
Abstract
An efficient one-step synthesis of N-Aryl aza-quasi[8]circulenes is reported starting from bis(biaryl)carbazoles. The intermediacy of N-aryl aza[7]helicene is investigated, and the Scholl oxidative cyclization route is invoked here to overcome the large strain during the formation of N-aryl aza-quasi[8]circulenes from N-aryl aza[7]helicene. Notably, this transformation occurs without the need for directing groups and proceeds from a more helical to a less helical pathway. Both the N-aryl aza[7]helicene and N-aryl aza-quasi[8]circulene are confirmed by single crystal X-ray structural analysis. The enantiomers of N-aryl aza[7]helicene are separated by chiral HPLC and analyzed by circular dichroism spectroscopy to investigate their chiroptical properties. However, N-aryl aza-quasi[8]circulene racemizes rapidly. The radical cations generated from aza-quasi[8]circulene through chemical oxidation exhibit broad absorption in the near-IR region and air stability up to 24 h. Optical and electrochemical studies with aza[7]helicene and aza-quasi[8]circulene derivatives highlight their potential in organic electronic devices.
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Affiliation(s)
- Sudesh Mallick
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600 036, Tamil Nadu, India
| | - Kalidass Kollimalaian
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600 036, Tamil Nadu, India
| | - Prabhakar Chetti
- Department of Chemistry, National Institute of Technology Kurukshetra, 136 119, Haryana, India
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3
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Siddiqui I, Kumar S, Tsai YF, Gautam P, Shahnawaz, Kesavan K, Lin JT, Khai L, Chou KH, Choudhury A, Grigalevicius S, Jou JH. Status and Challenges of Blue OLEDs: A Review. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2521. [PMID: 37764550 PMCID: PMC10536903 DOI: 10.3390/nano13182521] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 09/04/2023] [Accepted: 09/05/2023] [Indexed: 09/29/2023]
Abstract
Organic light-emitting diodes (OLEDs) have outperformed conventional display technologies in smartphones, smartwatches, tablets, and televisions while gradually growing to cover a sizable fraction of the solid-state lighting industry. Blue emission is a crucial chromatic component for realizing high-quality red, green, blue, and yellow (RGBY) and RGB white display technologies and solid-state lighting sources. For consumer products with desirable lifetimes and efficiency, deep blue emissions with much higher power efficiency and operation time are necessary prerequisites. This article reviews over 700 papers covering various factors, namely, the crucial role of blue emission for full-color displays and solid-state lighting, the performance status of blue OLEDs, and the systematic development of fluorescent, phosphorescent, and thermally activated delayed fluorescence blue emitters. In addition, various challenges concerning deep blue efficiency, lifetime, and approaches to realizing deeper blue emission and higher efficacy for blue OLED devices are also described.
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Affiliation(s)
- Iram Siddiqui
- Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Sudhir Kumar
- Institute for Chemical and Bioengineering, ETH Zürich, 8093 Zürich, Switzerland
| | - Yi-Fang Tsai
- Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Prakalp Gautam
- Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Shahnawaz
- Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Kiran Kesavan
- Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Jin-Ting Lin
- Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Luke Khai
- Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Kuo-Hsien Chou
- Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Abhijeet Choudhury
- Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Saulius Grigalevicius
- Department of Polymer Chemistry and Technology, Kaunas University of Technology, LT-50254 Kaunas, Lithuania
| | - Jwo-Huei Jou
- Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
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4
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Gautam P, Shahnawaz, Siddiqui I, Blazevicius D, Krucaite G, Tavgeniene D, Jou JH, Grigalevicius S. Bifunctional Bicarbazole-Benzophenone-Based Twisted Donor-Acceptor-Donor Derivatives for Deep-Blue and Green OLEDs. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:1408. [PMID: 37110993 PMCID: PMC10146648 DOI: 10.3390/nano13081408] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 04/07/2023] [Accepted: 04/15/2023] [Indexed: 08/27/2023]
Abstract
Organic light-emitting diodes (OLEDs) have played a vital role in showing tremendous technological advancements for a better lifestyle, due to their display and lighting technologies in smartphones, tablets, television, and automotive industries. Undoubtedly, OLED is a mainstream technology and, inspired by its advancements, we have designed and synthesized the bicarbazole-benzophenone-based twisted donor-acceptor-donor (D-A-D) derivatives, namely DB13, DB24, DB34, and DB43, as bi-functional materials. These materials possess high decomposition temperatures (>360 °C) and glass transition temperatures (~125 °C), a high photoluminescence quantum yield (>60%), wide bandgap (>3.2 eV), and short decay time. Owing to their properties, the materials were utilized as blue emitters as well as host materials for deep-blue and green OLEDs, respectively. In terms of the blue OLEDs, the emitter DB13-based device outperformed others by showing a maximum EQE of 4.0%, which is close to the theoretical limit of fluorescent materials for a deep-blue emission (CIEy = 0.09). The same material also displayed a maximum power efficacy of 45 lm/W as a host material doped with a phosphorescent emitter Ir(ppy)3. Furthermore, the materials were also utilized as hosts with a TADF green emitter (4CzIPN) and the device based on DB34 displayed a maximum EQE of 11%, which may be attributed to the high quantum yield (69%) of the host DB34. Therefore, the bi-functional materials that are easily synthesized, economical, and possess excellent characteristics are expected to be useful in various cost-effective and high-performance OLED applications, especially in displays.
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Affiliation(s)
- Prakalp Gautam
- Department of Materials Science and Engineering, National Tsing Hua University, No. 101, Section 2, Guangfu Rd., East District, Hsinchu 30013, Taiwan
| | - Shahnawaz
- Department of Materials Science and Engineering, National Tsing Hua University, No. 101, Section 2, Guangfu Rd., East District, Hsinchu 30013, Taiwan
| | - Iram Siddiqui
- Department of Materials Science and Engineering, National Tsing Hua University, No. 101, Section 2, Guangfu Rd., East District, Hsinchu 30013, Taiwan
| | - Dovydas Blazevicius
- Department of Polymer Chemistry and Technology, Kaunas University of Technology, Radvilenu Plentas 19, LT50254 Kaunas, Lithuania
| | - Gintare Krucaite
- Department of Polymer Chemistry and Technology, Kaunas University of Technology, Radvilenu Plentas 19, LT50254 Kaunas, Lithuania
| | - Daiva Tavgeniene
- Department of Polymer Chemistry and Technology, Kaunas University of Technology, Radvilenu Plentas 19, LT50254 Kaunas, Lithuania
| | - Jwo-Huei Jou
- Department of Materials Science and Engineering, National Tsing Hua University, No. 101, Section 2, Guangfu Rd., East District, Hsinchu 30013, Taiwan
| | - Saulius Grigalevicius
- Department of Polymer Chemistry and Technology, Kaunas University of Technology, Radvilenu Plentas 19, LT50254 Kaunas, Lithuania
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5
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Weinhold TD, Reece NA, Ribeiro K, Lopez Ocasio M, Watson N, Hanson K, Longstreet AR. Assessing Carbazole Derivatives as Single-Electron Photoreductants. J Org Chem 2022; 87:16928-16936. [PMID: 36472491 DOI: 10.1021/acs.joc.2c02312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The electron-donating capabilities of carbazoles have stimulated interest in their use as photoinduced single-electron reductants. Due to the modularity of the carbazole, a further broadening and understanding of their reactivity could be achieved by manipulating the structure. Herein, eight carbazole derivatives were synthesized, characterized, and assessed as single-electron photoreductants in the hydrodehalogenation of aryl halides and the arylation of N-methylpyrrole.
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Affiliation(s)
- Tyler D Weinhold
- Department of Chemistry, Biochemistry, and Physics, The University of Tampa, Tampa, Florida 33606, United States
| | - Natalie A Reece
- Department of Chemistry, Biochemistry, and Physics, The University of Tampa, Tampa, Florida 33606, United States
| | - Kevin Ribeiro
- Department of Chemistry, Biochemistry, and Physics, The University of Tampa, Tampa, Florida 33606, United States
| | - Maredh Lopez Ocasio
- Department of Chemistry, Biochemistry, and Physics, The University of Tampa, Tampa, Florida 33606, United States
| | - Noelle Watson
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
| | - Kenneth Hanson
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
| | - Ashley R Longstreet
- Department of Chemistry, Biochemistry, and Physics, The University of Tampa, Tampa, Florida 33606, United States
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6
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Bian QQ, Liu YJ, Zhao ZX, Wu H, Liu QX. Macrocyclic tetra-imidazolium salt sensor for p-nitroaniline sensing. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.133113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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7
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Hwang J, Koh CW, Ha JM, Woo HY, Park S, Cho MJ, Choi DH. Aryl-Annulated [3,2- a] Carbazole-Based Deep-Blue Soluble Emitters for High-Efficiency Solution-Processed Thermally Activated Delayed Fluorescence Organic Light-Emitting Diodes with CIE y <0.1. ACS APPLIED MATERIALS & INTERFACES 2021; 13:61454-61462. [PMID: 34913684 DOI: 10.1021/acsami.1c15659] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
In this study, we demonstrated two deep-blue TADF emitters, BO-tCzPhICz and BO-tCzDICz, for solution-processable thermally activated delayed fluorescence organic light-emitting diodes (TADF-OLEDs). They were synthesized by employing an organoboron acceptor and 9-(3,6-di-tert-butyl-9H-carbazol-9-yl)-5-phenyl-5,12-dihydroindolo[3,2-a]carbazole (tCzPhICz) and 12-(3,6-di-tert-butyl-9H-carbazol-9-yl)-15H-diindolo[2,3-b:1',2',3'-lm]carbazole (tCzDICz) as bulky aryl-annulated [3,2-a] carbazole donors, respectively. Both emitters showed sufficient solubility in organic solvents, narrow deep-blue emission, and small energy difference (ΔEST) between singlet and triplet states, which can be applied to solution-processable deep-blue TADF-OLEDs. Solution-processed OLEDs exploiting these TADF emitters displayed deep-blue electroluminescence with CIEy <0.1, and high external quantum efficiencies of 17.8 and 14.8% were observed for BO-tCzPhICz and BO-tCzDICz, respectively. The emitter bearing bulky ICz-based donating units shows highly promising potential for high-efficiency solution-processable deep-blue TADF-OLEDs.
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Affiliation(s)
- Jinhyo Hwang
- Department of Chemistry, Research Institute for Natural Science, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Chang Woo Koh
- Department of Chemistry, Research Institute for Natural Science, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Jung Min Ha
- Department of Chemistry, Research Institute for Natural Science, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Han Young Woo
- Department of Chemistry, Research Institute for Natural Science, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Sungnam Park
- Department of Chemistry, Research Institute for Natural Science, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Min Ju Cho
- Department of Chemistry, Research Institute for Natural Science, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Dong Hoon Choi
- Department of Chemistry, Research Institute for Natural Science, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
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8
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Li N, Xiong F, Gao K. Cobalt-Catalyzed Protodeboronation of Aryl and Vinyl Boronates. J Org Chem 2021; 86:1972-1979. [PMID: 33399463 DOI: 10.1021/acs.joc.0c02570] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
An efficient cobalt-based catalytic system for protodeboronation of various aryl and vinyl boronates is described. The reaction is capable of tolerating a wide range of functional groups. The reaction is also extended to deuterodeboronation with D2O, which provides a potential protocol for the synthesis of regiospecifically deuterated arenes and olefins.
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Affiliation(s)
- Ninglin Li
- Hubei International Scientific and Technological Cooperation Base of Pesticide and Green Synthesis, Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan, Hubei 430079, P. R. China
| | - Fuqiang Xiong
- Hubei International Scientific and Technological Cooperation Base of Pesticide and Green Synthesis, Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan, Hubei 430079, P. R. China
| | - Ke Gao
- Hubei International Scientific and Technological Cooperation Base of Pesticide and Green Synthesis, Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan, Hubei 430079, P. R. China
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9
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Qiao D, Chen G, Gong Y, Li K, Fan Y, Zhang B, Jia F, Abubakar Y, Jones A, Otung I, Copner N. Design and optical characterization of an efficient polarized organic light emitting diode based on refractive index modulation in the emitting layer. OPTICS EXPRESS 2020; 28:40131-40144. [PMID: 33379545 DOI: 10.1364/oe.412292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Accepted: 12/10/2020] [Indexed: 06/12/2023]
Abstract
Luminescent liquid Crystal (LC) material is regarded as the most promising material for polarized organic light emission due to their intrinsic characteristics including orderly alignment and luminescence. Nevertheless, the optical extraction efficiency of LC based organic light emitting diodes (OLEDs) devices still requires significant effort and innovation towards real-world applications. In this paper, we propose the design of a highly linearly polarized light-emission from OLEDs with integrated refractive index nanograting in the emissive layer (EML) based on photo aligned luminescent liquid crystal material. The simulation results indicate that the geometrically optimized polarized device yields an external quantum efficiency (EQE) up to 47% with a polarized ratio up to 28 dB at a 550 nm emission wavelength. This conceptual design offers a new opportunity to achieve efficient polarized organic luminescence, and it is (to the best of our knowledge) the first approach that enhances the light extraction of OLEDs based on luminescent liquid crystal via index grating in the EML.
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10
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Habib T, Zubair M, Bilquees S, Iqbal A, Siddiqi HM, Ashraf Z, Janjua NK. Polyimides with noncoplanar Carbazole-TPA units: synthesis and characterization. POLYM-PLAST TECH MAT 2020. [DOI: 10.1080/25740881.2020.1844234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Tayyaba Habib
- Department of Chemistry, Quaid I Azam University, Islamabad, Pakistan
| | - Maria Zubair
- Department of Chemistry, Quaid I Azam University, Islamabad, Pakistan
| | - Salma Bilquees
- Department of Chemistry, Quaid I Azam University, Islamabad, Pakistan
| | - Asma Iqbal
- Department of Chemistry, Quaid I Azam University, Islamabad, Pakistan
| | | | - Zaman Ashraf
- Department of Chemistry, Allama Iqbal Open University, Islamabad, Pakistan
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11
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Grace IM, Olsen G, Hurtado-Gallego J, Rincón-García L, Rubio-Bollinger G, Bryce MR, Agraït N, Lambert CJ. Connectivity dependent thermopower of bridged biphenyl molecules in single-molecule junctions. NANOSCALE 2020; 12:14682-14688. [PMID: 32618309 DOI: 10.1039/d0nr04001k] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
We report measurements on gold|single-molecule|gold junctions, using a modified scanning tunneling microscope-break junction (STM-BJ) technique, of the Seebeck coefficient and electrical conductance of a series of bridged biphenyl molecules, with meta connectivities to pyridyl anchor groups. These data are compared with a previously reported study of para-connected analogues. In agreement with a tight binding model, the electrical conductance of the meta series is relatively low and is sensitive to the nature of the bridging groups, whereas in the para case the conductance is higher and relatively insensitive to the presence of the bridging groups. This difference in sensitivity arises from the presence of destructive quantum interference in the π system of the unbridged aromatic core, which is alleviated to different degrees by the presence of bridging groups. More precisely, the Seebeck coefficient of meta-connected molecules was found to vary between -6.1 μV K-1 and -14.1 μV K-1, whereas that of the para-connected molecules varied from -5.5 μV K-1 and -9.0 μV K-1.
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Affiliation(s)
- Iain M Grace
- Department of Physics, Lancaster University, Lancaster, LA1 4YB, UK.
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12
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Shivaprasadachary B, Ramya AR, Reddy G, Giribabu L. Light induced intramolecular energy and electron transfer events in carbazole–corrole and phenothiazine-corrole dyads. J PORPHYR PHTHALOCYA 2020. [DOI: 10.1142/s1088424619501177] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
We report two corrole based donor–acceptor (D–A) dyads, Cbz-Cor and Ptz-Cor to understand the energy/electron transfer reactions. In these D–A systems, the donor, either carbazole (Cbz) or phenothiazine (Ptz), is covalently connected at the meso-phenyl position of 10-(phenyl)-5,15-bis-(pentafluorophenyl)corrole (Ph-Cor) by C–N linkage. Both the dyads were characterized by 1H NMR, MALDI-TOF MS, UV-vis, electrochemical, computational methods, study state fluorescence and TCSPC techniques. A comparison of absorption spectra with their reference monomeric compounds (Cbz-Ph, Ptz-Ph and Ph-Cor) revealed minimal ground-state interactions between chromophores in both dyads. Fluorescence studies suggested that singlet–singlet energy transfer from 1Cbz* to corrole is the major photochemical pathway in the Cbz-Cor dyad with a quenching efficiency of [Formula: see text]99%. Detailed analysis of the data suggests that Forster’s dipole–dipole mechanism does not adequately explain this energy transfer. However, at a 410 nm excitation, florescence quenching is detected in Ptz-Cor (49%) supporting a photo induced electron transfer (PET) process from the ground state of PTZ to the excited state of corrole macrocycle. The electron-transfer rates ([Formula: see text] of Ptz-Cor are found in the range [Formula: see text] to [Formula: see text] and are concluded to be solvent dependent.
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Affiliation(s)
- B. Shivaprasadachary
- Polymer and Functional Materials Division, Indian Institute of Chemical Technology, Hyderabad 500007, Telangana, India
| | - A. R. Ramya
- Polymer and Functional Materials Division, Indian Institute of Chemical Technology, Hyderabad 500007, Telangana, India
| | - Govind Reddy
- Polymer and Functional Materials Division, Indian Institute of Chemical Technology, Hyderabad 500007, Telangana, India
- Centre for Advanced Materials & Industrial Chemistry (CAMIC), School of Science, RMIT University, Melbourne VIC3000, Australia
| | - L. Giribabu
- Polymer and Functional Materials Division, Indian Institute of Chemical Technology, Hyderabad 500007, Telangana, India
- Academy of Scientific and Innovative Research, CSIR-IICT, India
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13
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Violet/deep-blue fluorescent organic light-emitting diode based on high-efficiency novel carbazole derivative with large torsion angle. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.151340] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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14
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Jayabharathi J, Panimozhi S, Thanikachalam V. Asymmetrically twisted phenanthrimidazole derivatives as host materials for blue fluorescent, green and red phosphorescent OLEDs. Sci Rep 2019; 9:17555. [PMID: 31772249 PMCID: PMC6879643 DOI: 10.1038/s41598-019-54125-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Accepted: 10/30/2019] [Indexed: 11/09/2022] Open
Abstract
The electroluminescent properties of asymmetrically twisted phenanthrimidazole derivatives comprised of fluorescent anthracene or pyrene unit namely, 1-(1-(anthracen-10-yl)naphthalen-4-yl)-2-styryl-1H-phenanthro[9,10-d]imidazole (ANSPI), 1-(1-(pyren-1-yl) naphthalene-4-yl)-2-styryl-1H-phenanthro[9,10-d]imidazole (PNSPI), 4-(2-(4-(anthracen-9-yl) styryl)-1H-phenanthro[9,10-d]imidazol-1-yl)naphthalene-1-carbonitrile (ASPINC) and 4-(2-(4-(pyren-1-yl)styryl)-1H-phenanthro[9,10-d]imidazol-1-yl)naphthalene-1-carbonitrile (PSPINC) for blue OLEDs have been analyzed. The asymmetrically twisted conformation interrupt π-conjugation effectively results in deep-blue emission. The pyrene containing PSPINC based non-doped blue device (476 nm) shows maximium efficiencies (current efficiency (ηc)-4.23 cd/A; power efficiency (ηp)-2.86 lm/W; external quantum efficiency (ηex)-3.48%: CIE (0.16, 0.17) at 3.10 V. Among the doped blue devices, An(PPI)2:ASPINC shows high efficiencies (ηc-12.13 cd/A; ηp-5.98 lm/W; ηex-6.79%; L-23986 cd m-2; EL-458 nm) at 3.15 V with CIE (0.15, 0.17) than An(PPI)2:PSPINC based device which is inconsistent with non-doped device performances. The green and red PhOLEDs show higher efficiencies with Ir(ppy)3: ASPINC (ηc-50.6 cd/A; ηp-53.4 lm/W; ηex-17.0%; L-61581 cd m-2; EL-501 nm, CIE (0.31, 0.60) at 3.32 V and (bt)2Ir(dipba): ASPINC (ηc-15.2 cd/A; ηp-16.5 lm/W; ηex-14.5%; L-13456 cd m-2; EL-610 nm), CIE (0.63, 0.36) at 3.20 V, respectively. The complete energy transfer between the host and dopant molecules improved the efficiency of PHOLEDs.
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Affiliation(s)
- Jayaraman Jayabharathi
- Department of Chemistry, Annamalai University, Annamalai nagar, 608 002, Tamilnadu, India.
| | - Sekar Panimozhi
- Department of Chemistry, Annamalai University, Annamalai nagar, 608 002, Tamilnadu, India
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Prusti B, Chakravarty M. Carbazole-Anthranyl π-Conjugates as Small and Stable Aggregation-Induced Emission-Active Fluorogens: Serving as a Reusable and Efficient Platform for Anticounterfeiting Applications with an Acid Key and Multicolor Ink for a Quill Pen. ACS OMEGA 2019; 4:16963-16971. [PMID: 31646243 PMCID: PMC6796900 DOI: 10.1021/acsomega.9b02277] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Accepted: 09/16/2019] [Indexed: 06/10/2023]
Abstract
Being a unique, simple, and inexpensive approach, continuous development on the fluorescence-based technologies remains active in fluorescent anticounterfeiting. A number of polymeric, nano-, carbon dot, and rare-earth oxide materials were preferably explored for such applications, but the complex synthesis, purity, and high cost are the major concerns to make these materials accessible for commercial applications. To address these difficulties, we herein report simple mono-carbazole-linked anthranyl π-conjugates that are synthesized in a gram scale via an inexpensive and convenient route. These unsymmetrically substituted new π-conjugates are found to be promising blue-shifted aggregation-induced emission-active fluorogens (AIEgens) having a distinct color on varying substituents with electron-rich (-NEt2) and electron-poor (-CN) functionalities. The direct link of a single carbazole unit with an anthracenyl π-conjugate possibly enforces the achievement of a highly twisted molecular structure, accountable for the AIE characteristics. The π-conjugate with -NEt2 substituents is established to be highly sensitive under protonation-deprotonation stimuli by a sharp and rapid fluorescence color change [yellow (Φf = 37%) to green (Φf = 39.4%)] in the solid state (no fluorescence on/off). Upon the exposure of the base vapors (deprotonation), the original emission color (yellow) comes back. Such reversible and also repeatable acidchromism is demonstrated to be perfectly suitable for anticounterfeiting applications by marking the AIEgen on the paper that shows the bright image of the AIEgen under the UV torch (365 nm). Almost equal efficiencies by fabricating on different surfaces such as polythene paper and a fresh leaf are observed. While these spots can be duplicated with typical yellow fluorescent dyes, our AIEgen can easily be differentiated with the acid key. The emission color change of this AIEgen from yellow to green under acid stimuli is distinctly defined compared to other dyes and vividly recognized by naked eyes. Thus, one can combat the counterfeiters with the acid key. The reversible color-changing behavior on the paper remains intact even after six consecutive days of exposure to sunlight, and the AIEgen is thermally stable up to 445 °C. Further, this compound is also utilized as ink (10 μM 1,4-dioxane solution) where a pigeon feather is used as a quill pen. The mechanistic insights behind these facts have also been proposed and validated wherever possible.
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16
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Iqbal A, Siddiqi HM, Zubair M, Akhter T, Park OO, Saeed A. Investigation of thermal and fluorescent properties of benzoxazole-linked triphenylamine-based co-polyimides. HIGH PERFORM POLYM 2019. [DOI: 10.1177/0954008319853332] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
A series of novel fluorescent co-polyimides are obtained by combining N 1-(4-aminophenyl)- N 1-(4-(benzo[ d]oxazol-2-yl) phenyl) benzene-1,4-diamine and 4,4′-oxydianiline with four aromatic anhydride, 3,3′,4,4′-benzophenonetetracarboxylic dianhydride, pyromellitic dianhydride, 4,4′-oxydiphthalic anhydride, and 4,4 ′-(hexafluoroisopropylidene)diphthalic anhydride following conventional polycondensation method. The resultant co-polyimides are characterized by elemental, Fourier transform infrared spectral analysis and gel permeation chromatography. All newly prepared polyimides (PIs) exhibit shallow highest occupied molecular orbital energy levels in the range of −4.47 to −4.98 eV and have reasonable optical bandgaps. The photoluminescence spectral analysis shows blue to green emission in solution form. Thermal and solubility properties reveal that the PIs with pendant 4-(benzo[ d]oxazol-2-yl group linked to triphenylamine unit in polymer backbone impart not only good thermal stability but also appreciable solubility making these new co-polyimides versatile for multipurpose usage.
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Affiliation(s)
- Asma Iqbal
- Department of Chemistry, Quaid-i-Azam University, Islamabad, Pakistan
| | - Humaira Masood Siddiqi
- Department of Chemistry, Organic Section, Quaid-i-Azam University, LAb 63-A, Islamabad, Pakistan
| | - Maria Zubair
- Department of Chemistry, Quaid-i-Azam University, Islamabad, Pakistan
| | - Toheed Akhter
- Department of Chemical and Bio-molecular Engineering KAIST, Daehak-ro, Yuseong-gu, Daejeo, Republic of Korea
| | - O Ok Park
- Department of Chemical and Bio-molecular Engineering KAIST, Daehak-ro, Yuseong-gu, Daejeo, Republic of Korea
| | - Aamer Saeed
- Department of Chemistry, Quaid-i-Azam University, Islamabad, Pakistan
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17
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Liu N, Mei S, Sun D, Shi W, Feng J, Zhou Y, Mei F, Xu J, Jiang Y, Cao X. Effects of Charge Transport Materials on Blue Fluorescent Organic Light-Emitting Diodes with a Host-Dopant System. MICROMACHINES 2019; 10:mi10050344. [PMID: 31130630 PMCID: PMC6562655 DOI: 10.3390/mi10050344] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/19/2019] [Revised: 05/14/2019] [Accepted: 05/23/2019] [Indexed: 11/16/2022]
Abstract
High efficiency blue fluorescent organic light-emitting diodes (OLEDs), based on 1,3-bis(carbazol-9-yl)benzene (mCP) doped with 4,4'-bis(9-ethyl-3-carbazovinylene)-1,1'-biphenyl (BCzVBi), were fabricated using four different hole transport layers (HTLs) and two different electron transport layers (ETLs). Fixing the electron transport material TPBi, four hole transport materials, including 1,1-Bis[(di-4-tolylamino)phenyl]cyclohexane (TAPC), N,N'-Di(1-naphthyl)-N,N'-diphenyl-(1,1'-biphenyl)-4'-diamine(NPB), 4,4'-Bis(N-carbazolyl)-1,1,-biphenyl (CBP) and molybdenum trioxide (MoO3), were selected to be HTLs, and the blue OLED with TAPC HTL exhibited a maximum luminance of 2955 cd/m2 and current efficiency (CE) of 5.75 cd/A at 50 mA/cm2, which are 68% and 62% higher, respectively, than those of the minimum values found in the device with MoO3 HTL. Fixing the hole transport material TAPC, the replacement of TPBi ETL with Bphen ETL can further improve the performance of the device, in which the maximum luminance can reach 3640 cd/m2 at 50 mA/cm2, which is 23% higher than that of the TPBi device. Furthermore, the lifetime of the device is also optimized by the change of ETL. These results indicate that the carrier mobility of transport materials and energy level alignment of different functional layers play important roles in the performance of the blue OLEDs. The findings suggest that selecting well-matched electron and hole transport materials is essential and beneficial for the device engineering of high-efficiency blue OLEDs.
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Affiliation(s)
- Neng Liu
- Hubei Key Laboratory for High-efficiency Utilization of Solar Energy and Operation Control of Energy Storage System, Hubei University of Technology, Wuhan 430068, China.
| | - Sijiong Mei
- Hubei Key Laboratory for High-efficiency Utilization of Solar Energy and Operation Control of Energy Storage System, Hubei University of Technology, Wuhan 430068, China.
| | - Dongwei Sun
- Hubei Key Laboratory for High-efficiency Utilization of Solar Energy and Operation Control of Energy Storage System, Hubei University of Technology, Wuhan 430068, China.
| | - Wuxing Shi
- Hubei Key Laboratory for High-efficiency Utilization of Solar Energy and Operation Control of Energy Storage System, Hubei University of Technology, Wuhan 430068, China.
| | - Jiahuan Feng
- Hubei Key Laboratory for High-efficiency Utilization of Solar Energy and Operation Control of Energy Storage System, Hubei University of Technology, Wuhan 430068, China.
| | - Yuanming Zhou
- Hubei Key Laboratory for High-efficiency Utilization of Solar Energy and Operation Control of Energy Storage System, Hubei University of Technology, Wuhan 430068, China.
| | - Fei Mei
- Hubei Key Laboratory for High-efficiency Utilization of Solar Energy and Operation Control of Energy Storage System, Hubei University of Technology, Wuhan 430068, China.
| | - Jinxia Xu
- Hubei Key Laboratory for High-efficiency Utilization of Solar Energy and Operation Control of Energy Storage System, Hubei University of Technology, Wuhan 430068, China.
| | - Yan Jiang
- Hubei Key Laboratory for High-efficiency Utilization of Solar Energy and Operation Control of Energy Storage System, Hubei University of Technology, Wuhan 430068, China.
| | - Xianan Cao
- Department of Computer Science and Electrical Engineering, West Virginia University, Morgantown, WV 26506, USA.
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18
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Tripodal synthetic receptors based on cyclotriphosphazene scaffold for highly selective and sensitive spectrofluorimetric determination of iron(III) in water samples. J Photochem Photobiol A Chem 2019. [DOI: 10.1016/j.jphotochem.2018.12.012] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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19
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Wan Q, Zhang B, Tong J, Li Y, Wu H, Zhang H, Wang Z, Pan Y, Tang BZ. Feasible structure-modification strategy for inhibiting aggregation-caused quenching effect and constructing exciton conversion channels in acridone-based emitters. Phys Chem Chem Phys 2019; 21:9837-9844. [DOI: 10.1039/c9cp01706b] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The introduction of multiple rotors donors and benzonitrile group in ADOs would increases effectively OLED emitters' performance by inhibiting aggregation-caused quenching effect and constructing exciton conversion channels.
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Affiliation(s)
- Qing Wan
- State Key Laboratory of Luminescent Materials and Devices
- Center for Aggregation-induced emission
- South China University of Technology
- Guangzhou 510640
- China
| | - Bing Zhang
- State Key Laboratory of Luminescent Materials and Devices
- Center for Aggregation-induced emission
- South China University of Technology
- Guangzhou 510640
- China
| | - Jialin Tong
- School of Petrochemical Engineering
- Shenyang University of Technology (SUT)
- Liaoyang 111003
- China
| | - Yin Li
- State Key Laboratory of Luminescent Materials and Devices
- Center for Aggregation-induced emission
- South China University of Technology
- Guangzhou 510640
- China
| | - Haozhong Wu
- State Key Laboratory of Luminescent Materials and Devices
- Center for Aggregation-induced emission
- South China University of Technology
- Guangzhou 510640
- China
| | - Han Zhang
- State Key Laboratory of Luminescent Materials and Devices
- Center for Aggregation-induced emission
- South China University of Technology
- Guangzhou 510640
- China
| | - Zhiming Wang
- State Key Laboratory of Luminescent Materials and Devices
- Center for Aggregation-induced emission
- South China University of Technology
- Guangzhou 510640
- China
| | - Yuyu Pan
- School of Petrochemical Engineering
- Shenyang University of Technology (SUT)
- Liaoyang 111003
- China
| | - Ben Zhong Tang
- State Key Laboratory of Luminescent Materials and Devices
- Center for Aggregation-induced emission
- South China University of Technology
- Guangzhou 510640
- China
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20
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L S, Babu Yathirajula R, Gopikrishna P, Elaiyappillai E, A B, S SM, Iyer PK, Johnson PM. Pronounced luminescence efficiency and thermal stability of small imidazole architect 2-(1, 4, 5-triphenyl-1H-imidazol-2-yl)phenol for efficient non-doped blue OLEDs. J Photochem Photobiol A Chem 2018. [DOI: 10.1016/j.jphotochem.2018.08.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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21
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A photophysical and spectroelectrochemical study on N-phenyl-carbazoles and their oxidized species. J Photochem Photobiol A Chem 2018. [DOI: 10.1016/j.jphotochem.2018.07.039] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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22
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Halogen-Bond-Assisted Photoluminescence Modulation in Carbazole-Based Emitter. Sci Rep 2018; 8:14431. [PMID: 30258120 PMCID: PMC6158238 DOI: 10.1038/s41598-018-32830-3] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Accepted: 09/07/2018] [Indexed: 01/27/2023] Open
Abstract
Halogen bonding between a carbazole-based, pyridine-substituted organic semiconductor and a common halogen-bond donor (pentafluoroiodobenzene) yields efficient halogen-bond-driven fluorescence modulation in solution. Steady-state, time-resolved emission and absorption spectroscopy as well as density functional theory studies demonstrate that the fluorescence modulation arises from halogen-bond-induced intramolecular charge transfer. Fluorescence modulation offers a range of possibilities both in solution and in the solid state, for instance providing a potential pathway for the design of tunable luminescent materials for light-emitting devices.
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23
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Thurakkal S, Soman A, Unni KN, Joseph J, Ramaiah D. Simple solution processable carbazole-oxadiazole hybrids for un-doped deep-blue OLEDs. J Photochem Photobiol A Chem 2018. [DOI: 10.1016/j.jphotochem.2018.03.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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24
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Xie P, Yuan N, Li S, Ouyang Y, Zhu Y, Liang H. Synthesis and properties of blue luminescent bipolar materials constructed with carbazole and anthracene units with 4-cyanophenyl substitute at the 9-position of the carbazole unit. LUMINESCENCE 2018; 33:604-610. [PMID: 29377545 DOI: 10.1002/bio.3452] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Revised: 12/08/2017] [Accepted: 12/12/2017] [Indexed: 11/11/2022]
Abstract
With carbazole and p-cyanobromobenzene as raw materials, 4-(3,6-di (anthracen-9-yl)-9H-carbazol-9-yl)benzonitrile (DACB) and 4-(3,6-bis(anthracene -9-ylethynyl)-9H-carbazol-9-yl)benzonitrile (BACB) were synthesized through the Suzuki coupling reaction and the Sonogashira coupling reaction, respectively. These structures were characterized using 1 H nuclear magnetic resonance (NMR), elemental analysis and mass spectrometry. Their thermal properties, ultraviolet-visible (UV-vis) absorption, fluorescence emission, fluorescence quantum yields and electrochemical properties were also investigated systematically. In addition, a electroluminescence (EL) device was made with BACB as the emitting layer and performance of the EL device was studied. Results showed that: (1) the temperature points with 5% and 10% of DACB weight loss were 443°C and 461°C, respectively, and were 475°C and 506°C with BACB weight loss of 5% and 10%, respectively. When the temperature was 50-300°C, no significantly thermal transition was observed which suggested that they had excellent thermal stability. (2) DACB and BACB had single emission peaks at 415 nm, and 479 nm with fluorescence quantum yields of 0.61 and 0.87, respectively, indicating that both compounds could emit strong blue light. (3) According to electrochemical measurement on BACB and DACB, their gaps were 3.07 eV and 2.76 eV, respectively, which further showed that these two compounds were very stable and acted as efficient blue light materials. (4) The turn-on voltage of the device was 5 V, and the device emitted dark blue light with Commission Internationale de L'Eclairage (CIE) coordinates of (0.157, 0.079).
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Affiliation(s)
- Pengbo Xie
- Petrochemical Engineering Department of Guangzhou Institute of Technology, Guangzhou, China
| | - Ningning Yuan
- Petrochemical Engineering Department of Guangzhou Institute of Technology, Guangzhou, China
| | - Shanji Li
- Petrochemical Engineering Department of Guangzhou Institute of Technology, Guangzhou, China
| | - Ying Ouyang
- Petrochemical Engineering Department of Guangzhou Institute of Technology, Guangzhou, China
| | - Yongju Zhu
- School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou, China
| | - Hui Liang
- School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou, China
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25
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Wright IA, Al-Attar HA, Batsanov AS, Monkman AP, Bryce MR. Conformationally-restricted bicarbazoles with phenylene bridges displaying deep-blue emission and high triplet energies: systematic structure–property relationships. Phys Chem Chem Phys 2018; 20:11867-11875. [PMID: 29662993 DOI: 10.1039/c8cp01636d] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Twelve bicarbazole derivatives with emission ranging from blue-green to deep-blue, and ET 2.6–3.0 eV.
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Affiliation(s)
- Iain A. Wright
- Department of Chemistry, Durham University
- Durham
- UK
- Department of Chemistry, Loughborough University
- Loughborough
| | - Hameed A. Al-Attar
- Department of Physics, Durham University
- Durham
- UK
- Department of Physics, Basrah University
- Basrah
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26
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Reddy G, Duvva N, Seetharaman S, D’Souza F, Giribabu L. Photoinduced energy transfer in carbazole–BODIPY dyads. Phys Chem Chem Phys 2018; 20:27418-27428. [DOI: 10.1039/c8cp05509b] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A series of carbazole (CBZ)–boron dipyrromethene (BODIPY) based donor–acceptor dyads, CB1, CB2, and CB3, with CBZ as an energy donor, tethered together with spacers of varied sizes i.e., phenyl bridge, biphenyl bridge and diphenylethyne bridge, respectively, are reported.
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Affiliation(s)
- Govind Reddy
- Polymers & Functional Materials Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad-500007
- India
| | - Naresh Duvva
- Polymers & Functional Materials Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad-500007
- India
| | | | | | - Lingamallu Giribabu
- Polymers & Functional Materials Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad-500007
- India
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27
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Kukhta NA, Matulaitis T, Volyniuk D, Ivaniuk K, Turyk P, Stakhira P, Grazulevicius JV, Monkman AP. Deep-Blue High-Efficiency TTA OLED Using Para- and Meta-Conjugated Cyanotriphenylbenzene and Carbazole Derivatives as Emitter and Host. J Phys Chem Lett 2017; 8:6199-6205. [PMID: 29227664 DOI: 10.1021/acs.jpclett.7b02867] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Elaboration of the appropriate host materials proved to be not less important for the fabrication of a highly efficient OLED than the design of emitters. In the present work, we show how by simple variation of molecular structure both blue emitters exhibiting delayed fluorescence and ambipolar high triplet energy hosts can be obtained. The compounds with a para-junction revealed higher thermal stability (TID up to 480 °C), lower ionization potentials (5.51-5.60 eV), exclusively hole transport, and higher photoluminescence quantum efficiencies (0.90-0.97). Meta-linkage leads to ambipolar charge transport and higher triplet energies (2.82 eV). Introduction of the accepting nitrile groups in the para-position induces intensive delayed fluorescence via a triplet-triplet annihilation up-conversion mechanism. By utilization of the para-substituted derivative as an emitter and the meta-substituted isomer as the host, a deep-blue OLED with the external quantum efficiency of 14.1% was fabricated.
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Affiliation(s)
- Nadzeya A Kukhta
- Department of Polymer Chemistry and Technology, Kaunas University of Technology , Radvilenu pl. 19, LT-254 Kaunas, Lithuania
| | - Tomas Matulaitis
- Department of Polymer Chemistry and Technology, Kaunas University of Technology , Radvilenu pl. 19, LT-254 Kaunas, Lithuania
| | - Dmytro Volyniuk
- Department of Polymer Chemistry and Technology, Kaunas University of Technology , Radvilenu pl. 19, LT-254 Kaunas, Lithuania
| | - Khrystyna Ivaniuk
- Lviv Polytechnic National University , S. Bandera 12, 79013 Lviv, Ukraine
| | - Pavlo Turyk
- Lviv Polytechnic National University , S. Bandera 12, 79013 Lviv, Ukraine
| | - Pavlo Stakhira
- Lviv Polytechnic National University , S. Bandera 12, 79013 Lviv, Ukraine
| | - Juozas V Grazulevicius
- Department of Polymer Chemistry and Technology, Kaunas University of Technology , Radvilenu pl. 19, LT-254 Kaunas, Lithuania
| | - Andrew P Monkman
- Department of Physics, Durham University , South Road, Durham DH1 3LE, United Kingdom
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28
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Zhan X, Yi Q, Cai S, Zhou X, Ma S, Lan F, Gu Z, Wu Y. Polymer-entanglement-driven coassembly of hybrid superparamagnetic nanoparticles: Tunable structures and flexible functionalization. J Colloid Interface Sci 2017; 508:263-273. [DOI: 10.1016/j.jcis.2017.07.116] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2017] [Revised: 07/11/2017] [Accepted: 07/29/2017] [Indexed: 11/30/2022]
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29
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Joseph V, Thomas KRJ, Singh M, Sahoo S, Jou JH. Manipulation of Donor-Acceptor Interactions in Carbazole-Based Emitters by Chromophore Choice To Achieve Near-UV Emission. European J Org Chem 2017. [DOI: 10.1002/ejoc.201701285] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Vellaichamy Joseph
- Organic Materials Laboratory; Department of Chemistry; Indian Institute of Technology Roorkee; 247 667 Roorkee India
| | - K. R. Justin Thomas
- Organic Materials Laboratory; Department of Chemistry; Indian Institute of Technology Roorkee; 247 667 Roorkee India
| | - Meenu Singh
- Department of Materials science and engineering; National Tsing Hua University; 30013 Hsinchu Taiwan
| | - Snehasis Sahoo
- Department of Materials science and engineering; National Tsing Hua University; 30013 Hsinchu Taiwan
| | - Jwo-Huei Jou
- Department of Materials science and engineering; National Tsing Hua University; 30013 Hsinchu Taiwan
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30
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Immobilized Pd nanoparticles on silica-starch substrate (PNP-SSS): Efficient heterogeneous catalyst in Buchwald–Hartwig C–N cross coupling reaction. J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2017.09.037] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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31
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Iwanaga T, Yamauchi T, Toyota S, Suzuki S, Okada K. Oxidation State-Dependent Intramolecular Electronic Interaction of Carbazole-Based Azacyclophanes with 9,10-Anthrylene Units. J Org Chem 2017; 82:10699-10703. [DOI: 10.1021/acs.joc.7b01688] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Tetsuo Iwanaga
- Department
of Chemistry, Faculty of Science, Okayama University of Science, 1-1 Ridaicho, Kita-ku, Okayama 700-0005, Japan
| | - Tomokazu Yamauchi
- Department
of Chemistry, Faculty of Science, Okayama University of Science, 1-1 Ridaicho, Kita-ku, Okayama 700-0005, Japan
| | - Shinji Toyota
- Department
of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1
Ookayama, Meguro-ku, Tokyo 152−8551, Japan
| | - Shuichi Suzuki
- Department
of Chemistry, Graduate School of Science, Osaka City University, Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan
| | - Keiji Okada
- Department
of Chemistry, Graduate School of Science, Osaka City University, Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan
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32
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Song JE, Lee SE, Song YR, Kim TW, Lim CW, Kim YK. Bipolar Host Materials Based on 1,3,5-Triazine Derivative for Green Phosphorescent Organic Light-emitting Diode. B KOREAN CHEM SOC 2017. [DOI: 10.1002/bkcs.11196] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Jung Eun Song
- Graduate School of East-West Medical Science; Kyung Hee University; Gyeonggi-do 449-701 Republic of Korea
| | - Song Eun Lee
- Department of Information Display; Hongik University; Seoul 121-791 Republic of Korea
| | - Yeong Ran Song
- Department of Chemistry, College of Life Science and Nano-technology; Hannam University; Daejeon 305-811 Republic of Korea
| | - Tae Woo Kim
- Graduate School of East-West Medical Science; Kyung Hee University; Gyeonggi-do 449-701 Republic of Korea
| | - Choon Woo Lim
- Department of Chemistry, College of Life Science and Nano-technology; Hannam University; Daejeon 305-811 Republic of Korea
| | - Young Kwan Kim
- Department of Information Display; Hongik University; Seoul 121-791 Republic of Korea
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33
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Konidena RK, Thomas KRJ. Star-Shaped Asymmetrically Substituted Blue Emitting Carbazoles: Synthesis, Photophyscial, Electrochemical and Theoretical Investigations. ChemistrySelect 2017. [DOI: 10.1002/slct.201701336] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Rajendra Kumar Konidena
- Organic Materials Laboratory, Department of Chemistry; Indian Institute of Technology Roorkee; Roorkee − 247667 India
| | - K. R. Justin Thomas
- Organic Materials Laboratory, Department of Chemistry; Indian Institute of Technology Roorkee; Roorkee − 247667 India
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34
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Fell VHK, Mikosch A, Steppert AK, Ogieglo W, Senol E, Canneson D, Bayer M, Schoenebeck F, Greilich A, Kuehne AJC. Synthesis and Optical Characterization of Hybrid Organic–Inorganic Heterofluorene Polymers. Macromolecules 2017. [DOI: 10.1021/acs.macromol.6b02611] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Valentin H. K. Fell
- DWI
− Leibniz Institute for Interactive Materials, RWTH Aachen University, Forckenbeckstraße 50, 52076 Aachen, Germany
| | - Annabel Mikosch
- DWI
− Leibniz Institute for Interactive Materials, RWTH Aachen University, Forckenbeckstraße 50, 52076 Aachen, Germany
| | - Ann-Kathrin Steppert
- DWI
− Leibniz Institute for Interactive Materials, RWTH Aachen University, Forckenbeckstraße 50, 52076 Aachen, Germany
| | - Wojciech Ogieglo
- DWI
− Leibniz Institute for Interactive Materials, RWTH Aachen University, Forckenbeckstraße 50, 52076 Aachen, Germany
| | - Erdem Senol
- Institute
of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Damien Canneson
- Experimentelle
Physik 2, Technische Universität Dortmund, 44221 Dortmund, Germany
| | - Manfred Bayer
- Experimentelle
Physik 2, Technische Universität Dortmund, 44221 Dortmund, Germany
| | - Franziska Schoenebeck
- Institute
of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Alex Greilich
- Experimentelle
Physik 2, Technische Universität Dortmund, 44221 Dortmund, Germany
| | - Alexander J. C. Kuehne
- DWI
− Leibniz Institute for Interactive Materials, RWTH Aachen University, Forckenbeckstraße 50, 52076 Aachen, Germany
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35
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Chau NY, Ho PY, Ho CL, Ma D, Wong WY. Color-tunable thiazole-based iridium(III) complexes: Synthesis, characterization and their OLED applications. J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2016.11.018] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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36
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Wu L, Deng G, Liang Y. Synthesis of dibenzo[a,c]carbazoles from 2-(2-halophenyl)-indoles and iodobenzenes via palladium-catalyzed dual C–H functionalization. Org Biomol Chem 2017; 15:6808-6812. [DOI: 10.1039/c7ob01638g] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report an efficient approach to synthesize dibenzo[a,c]carbazoles via a palladium-catalyzed cross-coupling tandem reaction.
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Affiliation(s)
- Lijun Wu
- Key Laboratory of the Assembly and Application of Organic Functional Molecules
- Hunan Normal University
- Changsha
- China
| | - Guobo Deng
- Key Laboratory of the Assembly and Application of Organic Functional Molecules
- Hunan Normal University
- Changsha
- China
| | - Yun Liang
- Key Laboratory of the Assembly and Application of Organic Functional Molecules
- Hunan Normal University
- Changsha
- China
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37
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Sivakumar G, Sasikumar M, Rao VJ. Synthesis and Characterization of Diketopyrrolopyrrole‐based D‐π‐A‐π‐D Small Molecules for Organic Solar Cell Applications. J Heterocycl Chem 2016. [DOI: 10.1002/jhet.2795] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Gangala Sivakumar
- Crop Protection Chemicals Division and AcSIRCSIR‐Indian Institute of Chemical Technology Hyderabad 500007 India
| | - Mayarambakam Sasikumar
- Crop Protection Chemicals Division and AcSIRCSIR‐Indian Institute of Chemical Technology Hyderabad 500007 India
| | - Vaidya Jayathirtha Rao
- Crop Protection Chemicals Division and AcSIRCSIR‐Indian Institute of Chemical Technology Hyderabad 500007 India
- Network Institutes for Solar Energy New Delhi India
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38
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Ruan Z, Li L, Wang C, Xie Y, Hu Q, Peng Q, Ye S, Li Q, Li Z. Tetraphenylcyclopentadiene Derivatives: Aggregation-Induced Emission, Adjustable Luminescence from Green to Blue, Efficient Undoped OLED Performance and Good Mechanochromic Properties. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2016; 12:6623-6632. [PMID: 27671549 DOI: 10.1002/smll.201602285] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2016] [Indexed: 06/06/2023]
Abstract
Silole derivatives, the first reported and famous AIEgens, are a series of Si-containing conjugated rings with the σ*-π* conjugation, and this unique electronic structure imparts them high electron affinity and fast electron mobility, but not ideal blue luminogens due to their relatively long conjugation length. By replacing the Si atom with the C one, six new AIEgens without the σ*-π* conjugation effect are successfully synthesized based on a tetraphenylcyclopentadiene core. In addition to the sky-blue emission (λEL = 492 nm) with Lmax , ηC,max , and ηP,max up to 24 096 cd m-2 , 6.80 cd A-1 , and 4.07 lm W-1 , respectively, the careful control of the conjugation degree by changing the linkage mode, results in the blue one (λEL = 440 nm) with relatively good performance (Lmax : 8721 cd m-2 and ηC,max : 3.40 cd A-1 ), indicating that the replacement of the Si atom by C one is an alternative design strategy to yield blue even deep-blue AIEgens with good device performance. Meanwhile, their reversible mechanochromic properties are realized with apparent fluorescence changes between deep-blue and green emissive colors, offering them additional promising applications in optoelectronic devices.
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Affiliation(s)
- Zhijun Ruan
- Department of Chemistry, Wuhan University, Wuhan, 430072, China
| | - Le Li
- Key Laboratory for Organic Electronics and Information Displays (KLOEID), Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications, Nanjing, 210023, P. R. China
| | - Can Wang
- College of Chemistry and Chemical Engineering, Hubei University, Wuhan, 430062, China
| | - Yujun Xie
- Department of Chemistry, Wuhan University, Wuhan, 430072, China
| | - Quanyuan Hu
- College of Chemistry and Chemical Engineering, Hubei University, Wuhan, 430062, China
| | - Qian Peng
- Key Laboratory of Organic Solids, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Shanghui Ye
- Key Laboratory for Organic Electronics and Information Displays (KLOEID), Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications, Nanjing, 210023, P. R. China
| | - Qianqian Li
- Department of Chemistry, Wuhan University, Wuhan, 430072, China
| | - Zhen Li
- Department of Chemistry, Wuhan University, Wuhan, 430072, China
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39
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Ho KW, Ariffin A. Synthesis, photophysical, and electrochemical properties of wide band gap tetraphenylsilane-carbazole derivatives: Effect of the substitution position and naphthalene side chain. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2016. [DOI: 10.1134/s0036024416130124] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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40
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Lee J, Lee H, Jung H, Jo M, Park J. P-156: Electroluminescence Properties of Novel Pyrene-Fused Chromophores. ACTA ACUST UNITED AC 2016. [DOI: 10.1002/sdtp.11033] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Jaehyun Lee
- Department of Chemistry/Display Research Center, The Catholic University of Korea, Bucheon, 420-743, South Korea
| | - Hayoon Lee
- Department of Chemistry/Display Research Center, The Catholic University of Korea, Bucheon, 420-743, South Korea
| | - Hyocheol Jung
- Department of Chemistry/Display Research Center, The Catholic University of Korea, Bucheon, 420-743, South Korea
| | - Minjin Jo
- Department of Chemistry/Display Research Center, The Catholic University of Korea, Bucheon, 420-743, South Korea
| | - Jongwook Park
- Department of Chemistry/Display Research Center, The Catholic University of Korea, Bucheon, 420-743, South Korea
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41
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Chowdhury A, Howlader P, Mukherjee PS. Aggregation‐Induced Emission of Platinum(II) Metallacycles and Their Ability to Detect Nitroaromatics. Chemistry 2016; 22:7468-78. [DOI: 10.1002/chem.201600698] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Indexed: 12/19/2022]
Affiliation(s)
- Aniket Chowdhury
- Inorganic and Physical Chemistry Indian Institute of Science Bangalore 560012 India
| | - Prodip Howlader
- Inorganic and Physical Chemistry Indian Institute of Science Bangalore 560012 India
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42
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Zhang Q, Wei H, Zhai R, Ji Z, Qi Y, Zhao X. 5-(N-Ethylcarbazol-3-yl)thiophene-2-carbaldehyde (ECTC): a novel fluorescent sensor for ferric ion. HETEROCYCL COMMUN 2016. [DOI: 10.1515/hc-2016-0130] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract5-(
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43
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Organic Light-Emitting Diodes (OLEDs): Working Principles and Device Technology. LECTURE NOTES IN CHEMISTRY 2016. [DOI: 10.1007/978-3-319-31671-0_3] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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44
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Iqbal A, Lee SH, Park OO, Siddiqi HM, Akhter T. Synthesis and characterization of blue light emitting redox-active polyimides bearing a noncoplanar fused carbazole–triphenylamine unit. NEW J CHEM 2016. [DOI: 10.1039/c6nj00702c] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Photoactive organosoluble polyimides containing a fused triphenylamine–carbazole group were synthesized. These polyimides demonstrated significant potential for optoelectronic devices.
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Affiliation(s)
- Asma Iqbal
- Department of Chemistry
- Quaid-i-Azam University
- Islamabad
- Pakistan
- Department of Chemical and Biomolecular Engineering (BK21+ graduate program)
| | - Seok Hwan Lee
- Department of Chemical and Biomolecular Engineering (BK21+ graduate program)
- Korea Advanced Institute of Science and Technology
- Yuseong-gu
- Republic of Korea
| | - O Ok Park
- Department of Chemical and Biomolecular Engineering (BK21+ graduate program)
- Korea Advanced Institute of Science and Technology
- Yuseong-gu
- Republic of Korea
| | | | - Toheed Akhter
- Department of Chemical and Biomolecular Engineering (BK21+ graduate program)
- Korea Advanced Institute of Science and Technology
- Yuseong-gu
- Republic of Korea
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45
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Reig M, Bubniene G, Cambarau W, Jankauskas V, Getautis V, Palomares E, Martínez-Ferrero E, Velasco D. New solution-processable carbazole derivatives as deep blue emitters for organic light-emitting diodes. RSC Adv 2016. [DOI: 10.1039/c5ra21959k] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Triple bonds as π-spacers in deep blue carbazole-based emitters for non-doped organic light-emitting diodes.
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Affiliation(s)
- Marta Reig
- Grup de Materials Orgànics
- Institut de Nanociència i Nanotecnologia (IN2UB)
- Departament de Química Orgànica
- Universitat de Barcelona
- Spain
| | - Giedre Bubniene
- Grup de Materials Orgànics
- Institut de Nanociència i Nanotecnologia (IN2UB)
- Departament de Química Orgànica
- Universitat de Barcelona
- Spain
| | - Werther Cambarau
- Institute of Chemical Research of Catalonia (ICIQ)
- The Barcelona Institute of Science and Technology (BIST)
- Tarragona
- Spain
| | | | - Vytautas Getautis
- Department of Organic Chemistry
- Kaunas University of Technology
- Kaunas
- Lithuania
| | - Emilio Palomares
- Institute of Chemical Research of Catalonia (ICIQ)
- The Barcelona Institute of Science and Technology (BIST)
- Tarragona
- Spain
- Catalan Institution for Research and Advance Studies (ICREA)
| | | | - Dolores Velasco
- Grup de Materials Orgànics
- Institut de Nanociència i Nanotecnologia (IN2UB)
- Departament de Química Orgànica
- Universitat de Barcelona
- Spain
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46
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Gao Z, Liu F, Li J, Cheng G, Lu P. Solution-processed UV light emitting diode based on butyltriphenylsilane modified phenanthro[9,10-d]imidazole with high efficiency. RSC Adv 2016. [DOI: 10.1039/c6ra18755b] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
A solution-processed device using SiBPI as an active layer achieves a high ηext of 1.76% with CIE coordinates of (0.158, 0.042).
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Affiliation(s)
- Zhao Gao
- State Key Laboratory of Supramolecular Structure and Materials
- Jilin University
- Changchun
- China
- National Key Laboratory for Shock Wave and Detonation Physics Research
| | - Fangming Liu
- State Key Laboratory of Supramolecular Structure and Materials
- Jilin University
- Changchun
- China
| | - Jinyu Li
- State Key Laboratory of Supramolecular Structure and Materials
- Jilin University
- Changchun
- China
| | - Gang Cheng
- State Key Laboratory on Integrated Optoelectronics
- College of Electronic Science and Engineering
- Jilin University
- Changchun 130012
- China
| | - Ping Lu
- State Key Laboratory of Supramolecular Structure and Materials
- Jilin University
- Changchun
- China
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47
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Zhang F, Li W, Wei D, Wei X, Li Z, Zhang S, Li S, Wei B, Cao G, Zhai B. Synthesis, photophysical and electroluminescent properties of blue-emitting dual core imidazole–anthracene/pyrene derivatives. RSC Adv 2016. [DOI: 10.1039/c6ra04958c] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Two blue emitting dual core materials 1 and 2 consisting of phenanthroimidazole and anthracene or pyrene chromophores were synthesized, and efficient nondoped blue-emitting OLEDs with low onset voltages and little efficiency roll-off were fabricated.
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Affiliation(s)
- Fuli Zhang
- College of Chemistry and Chemical Engineering
- Shangqiu Normal University
- Shangqiu 476000
- P. R. China
| | - Weiling Li
- School of Materials Science and Engineering
- Shanghai University
- Shanghai 200072
- P. R. China
| | - Donghui Wei
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou 450007
- P. R. China
| | - Xinyu Wei
- Shangqiu Supervision & Testing Center for Quality and Technology
- Shangqiu 476000
- P. R. China
| | - Zhongyi Li
- College of Chemistry and Chemical Engineering
- Shangqiu Normal University
- Shangqiu 476000
- P. R. China
| | - Shiying Zhang
- College of Chemistry and Chemical Engineering
- Shangqiu Normal University
- Shangqiu 476000
- P. R. China
| | - Suzhi Li
- College of Chemistry and Chemical Engineering
- Shangqiu Normal University
- Shangqiu 476000
- P. R. China
| | - Bin Wei
- School of Materials Science and Engineering
- Shanghai University
- Shanghai 200072
- P. R. China
| | - Guangxiu Cao
- College of Chemistry and Chemical Engineering
- Shangqiu Normal University
- Shangqiu 476000
- P. R. China
| | - Bin Zhai
- College of Chemistry and Chemical Engineering
- Shangqiu Normal University
- Shangqiu 476000
- P. R. China
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48
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Kim YS, Jeong SJ, Lee HW, Kim J, Lee SE, Kim YK, Yoon SS. Efficient blue organic light-emitting diodes using N(2) ,N(2) ,N(11) ,N(11) ,5,6,7,8-octaphenyltriphenylene-2,11-diamine derivatives. LUMINESCENCE 2015; 31:1031-6. [PMID: 26693664 DOI: 10.1002/bio.3070] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Revised: 11/05/2015] [Accepted: 11/05/2015] [Indexed: 11/09/2022]
Abstract
In this study, we have synthesized phenyl-substituted triphenylene derivatives, using the Diels-Alder reaction and the Buchwald-Hartwig reaction. To investigate electroluminescence properties of these materials, multilayer organic light-emitting diode (OLED) devices were fabricated with a structure of indium-tin-oxide (ITO) (180 nm)/4,4'-bis(N-(1-naphthyl)-N-phenylamino)biphenyl (NPB) (50 nm)/blue-emitting materials (1-3) (30 nm)/bathophenanthroline (Bphen) (35 nm)/lithium quinolate (Liq) (2 nm)/Al (100 nm). A device using N(2) ,N(2) ,N(11) ,N(11) ,5,6,7-heptaphenyltriphenylene-2,11-diamine (2) exhibited efficient blue emission with luminous, power, and external quantum efficiencies of 0.92 cd/A, 0.67 lm/W, and 1.17% at 20 mA/cm(2) , respectively. The Commission International de L'Éclairage coordinates of this device were (x = 0.15, y = 0.09) at 6.0 V. Copyright © 2015 John Wiley & Sons, Ltd.
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Affiliation(s)
- Young Seok Kim
- Department of Chemistry, Sungkyunkwan University, Suwon, 440-746, Korea
| | - Su Jin Jeong
- Department of Chemistry, Sungkyunkwan University, Suwon, 440-746, Korea
| | - Hyun Woo Lee
- Department of Chemistry, Sungkyunkwan University, Suwon, 440-746, Korea
| | - Jwajin Kim
- Department of Chemistry, Sungkyunkwan University, Suwon, 440-746, Korea
| | - Song Eun Lee
- Department of Information Display, Hongik University, Seoul, 121-791, Korea
| | - Young Kwan Kim
- Department of Information Display, Hongik University, Seoul, 121-791, Korea
| | - Seung Soo Yoon
- Department of Chemistry, Sungkyunkwan University, Suwon, 440-746, Korea
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49
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Affiliation(s)
- Jaehyun Lee
- Department of Chemistry/Display
Research Center, The Catholic University of Korea, Bucheon 420-743, South Korea
| | - Jongwook Park
- Department of Chemistry/Display
Research Center, The Catholic University of Korea, Bucheon 420-743, South Korea
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50
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Song YR, Lim CW, Kim TW. Synthesis and photophysical properties of 1,2-diphenylindolizine derivatives: fluorescent blue-emitting materials for organic light-emitting device. LUMINESCENCE 2015; 31:364-371. [DOI: 10.1002/bio.2968] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2015] [Revised: 06/08/2015] [Accepted: 06/12/2015] [Indexed: 11/07/2022]
Affiliation(s)
- Yeong Ran Song
- Graduate School of East-West Medical Science; Kyung Hee University; Gyeonggi-do 449-701 Republic of Korea
| | - Choon Woo Lim
- Department of Chemistry; College of Life Science and Nanotechnology; Hannam University; Daejeon 305-811 Republic of Korea
| | - Tae Woo Kim
- Graduate School of East-West Medical Science; Kyung Hee University; Gyeonggi-do 449-701 Republic of Korea
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