1
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Xia Z, Wang W, Zhang G. Formation of Nitrogen-Doped Positively Curved Molecules by π-Extension. Org Lett 2024; 26:3901-3905. [PMID: 38666661 DOI: 10.1021/acs.orglett.4c01087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/12/2024]
Abstract
Two nitrogen-doped positively curved aromatic molecules bearing doubly fused pentagonal rings were synthesized and characterized. Crystallographic analysis confirms the formation of a bowl-shaped structure, which is induced by the fusion of adjacent pentagons to the rigid aromatic planes. Both compounds demonstrate good photoluminescence. These electron-rich bowl-shaped molecules can associate with C60 to form complexes in 2:1 ratio in toluene with different association constants depending on the molecular dimension of the hosts.
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Affiliation(s)
- Zhen Xia
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, P. R. China
| | - Weifan Wang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, P. R. China
| | - Gang Zhang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, P. R. China
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2
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Du M, Mai M, Zhang D, Duan L, Zhang Y. Stereo effects for efficient synthesis of orange-red multiple resonance emitters centered on a pyridine ring. Chem Sci 2024; 15:3148-3154. [PMID: 38425532 PMCID: PMC10901515 DOI: 10.1039/d3sc06470k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2023] [Accepted: 01/16/2024] [Indexed: 03/02/2024] Open
Abstract
Despite theoretical difficulties, we herein demonstrate an effective strategy for the inaugural synthesis of an orange-red multiple resonance (MR) emitter centered on a pyridine ring via stereo effects. Compared to conventional benzene-centered materials, the pyridine moiety in the novel MR material acts as a co-acceptor. This results in a significant spectral redshift and a narrower spectrum, as well as an improved photoluminescence quantum yield (PLQY) due to the formation of intramolecular hydrogen bonds. As envisioned, the proof-of-concept emitter Py-Cz-BN exhibits bright orange-red emission peaking at 586 nm with a small full width at half maximum (FWHM) of 0.14 eV (40 nm), exceeding both the wavelength and FWHM achieved with benzene-centered BBCz-Y. Benefiting from high PLQYs (>92%) and suppressed chromophore interactions, the optimized organic light-emitting diodes achieved high maximum external quantum efficiencies of 25.3-29.6%, identical small FWHMs of 0.18 eV (54 nm), and long lifetimes over a wide range of dopant concentrations (1-15 wt%). The performance described above demonstrates the effectiveness of this molecular design and synthesis strategy in constructing high performance long-wavelength MR emitters.
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Affiliation(s)
- Mingxu Du
- Key Lab of Organic Optoelectronics and Molecular Engineering of Ministry of Education, Department of Chemistry, Tsinghua University Beijing 100084 P. R. China
- Laboratory of Flexible Electronics Technology, Tsinghua University Beijing 100084 P. R. China
| | - Minqiang Mai
- Key Lab of Organic Optoelectronics and Molecular Engineering of Ministry of Education, Department of Chemistry, Tsinghua University Beijing 100084 P. R. China
| | - Dongdong Zhang
- Key Lab of Organic Optoelectronics and Molecular Engineering of Ministry of Education, Department of Chemistry, Tsinghua University Beijing 100084 P. R. China
- Laboratory of Flexible Electronics Technology, Tsinghua University Beijing 100084 P. R. China
| | - Lian Duan
- Key Lab of Organic Optoelectronics and Molecular Engineering of Ministry of Education, Department of Chemistry, Tsinghua University Beijing 100084 P. R. China
- Laboratory of Flexible Electronics Technology, Tsinghua University Beijing 100084 P. R. China
| | - Yuewei Zhang
- Laboratory of Flexible Electronics Technology, Tsinghua University Beijing 100084 P. R. China
- Applied Mechanics Lab, School of Aerospace Engineering, Tsinghua University Beijing 100084 P. R. China
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3
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Liang L, Qu C, Fan X, Ye K, Zhang Y, Zhang Z, Duan L, Wang Y. Carbonyl- and Nitrogen-Embedded Multi-Resonance Emitter with Ultra-Pure Green Emission and High Electroluminescence Efficiencies. Angew Chem Int Ed Engl 2024; 63:e202316710. [PMID: 38061992 DOI: 10.1002/anie.202316710] [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: 11/03/2023] [Indexed: 12/19/2023]
Abstract
Multi-resonance thermally activated delayed fluorescence (MR-TADF) emitters with narrow emission spectra have garnered significant attention in future organic light-emitting diode (OLED) displays. However, current C=O/N-embedded MR-TADF systems still lack satisfactory performance in terms of electroluminescence bandwidths and external quantum efficiencies (EQEs). In this study, a C=O/N-embedded green MR-TADF emitter, featuring two acridone units incorporated in a sterically protected 11-ring fused core skeleton, is successfully synthesized through finely controlling the reaction selectivity. The superior combination of multiple intramolecular fusion and steric wrapping strategies in the design of the emitter not only imparts an extremely narrow emission spectrum and a high fluorescence quantum yield to the emitter but also mitigates aggregation-induced spectral broadening and fluorescence quenching. Therefore, the emitter exhibits leading green OLED performance among C=O/N-based MR-TADF systems, achieving an EQE of up to 37.2 %, a full width at half maximum of merely 0.11 eV (24 nm), and a Commission Internationale de l'Éclairage coordinate of (0.20, 0.73). This study marks a significant advance in the realization of ideal C=O/N-based MR-TADF emitters and holds profound implications for the design and synthesis of other MR-TADF systems.
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Affiliation(s)
- Lu Liang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Cheng Qu
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Xiangyu Fan
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Kaiqi Ye
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Yuewei Zhang
- Laboratory of Flexible Electronics Technology, Tsinghua University, Beijing, 100084, P. R. China
| | - Zuolun Zhang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Lian Duan
- Laboratory of Flexible Electronics Technology, Tsinghua University, Beijing, 100084, P. R. China
| | - Yue Wang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, P. R. China
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4
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Yu YJ, Feng ZQ, Meng XY, Chen L, Liu FM, Yang SY, Zhou DY, Liao LS, Jiang ZQ. Introducing Spiro-locks into the Nitrogen/Carbonyl System towards Efficient Narrowband Deep-blue Multi-resonance TADF Emitters. Angew Chem Int Ed Engl 2023; 62:e202310047. [PMID: 37593817 DOI: 10.1002/anie.202310047] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 08/15/2023] [Accepted: 08/16/2023] [Indexed: 08/19/2023]
Abstract
The current availability of multi-resonance thermally activated delayed fluorescence (MR-TADF) materials with excellent color purity and high device efficiency in the deep-blue region is appealing. To address this issue in the emerged nitrogen/carbonyl MR-TADF system, we propose a spiro-lock strategy. By incorporating spiro functionalization into a concise molecular skeleton, a series of emitters (SFQ, SOQ, SSQ, and SSeQ) can enhance molecular rigidity, blue-shift the emission peak, narrow the emission band, increase the photoluminescence quantum yield by over 92 %, and suppress intermolecular interactions in the film state. The referent CZQ without spiro structure has a more planar skeleton, and its bluer emission in the solution state redshifts over 40 nm with serious spectrum broadening and a low PLQY in the film state. As a result, SSQ achieves an external quantum efficiency of 25.5 % with a peak at 456 nm and a small full width at half maximum of 31 nm in a simple unsensitized device, significantly outperforming CZQ. This work discloses the importance of spiro-junction in modulating deep-blue MR-TADF emitters.
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Affiliation(s)
- You-Jun Yu
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, 215123, Suzhou, Jiangsu, P. R. China
| | - Zi-Qi Feng
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, 215123, Suzhou, Jiangsu, P. R. China
| | - Xin-Yue Meng
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, 215123, Suzhou, Jiangsu, P. R. China
| | - Long Chen
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, 215123, Suzhou, Jiangsu, P. R. China
| | - Fu-Ming Liu
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, 215123, Suzhou, Jiangsu, P. R. China
| | - Sheng-Yi Yang
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, 215123, Suzhou, Jiangsu, P. R. China
| | - Dong-Ying Zhou
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, 215123, Suzhou, Jiangsu, P. R. China
| | - Liang-Sheng Liao
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, 215123, Suzhou, Jiangsu, P. R. China
- Macao Institute of Materials Science and Engineering, Macau University of Science and Technology, 999078, Taipa, Macau SAR, China
| | - Zuo-Quan Jiang
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, 215123, Suzhou, Jiangsu, P. R. China
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5
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Wagner J, Kumar D, Kochman MA, Gryber T, Grzelak M, Kubas A, Data P, Lindner M. Facile Functionalization of Ambipolar, Nitrogen-Doped PAHs toward Highly Efficient TADF OLED Emitters. ACS APPLIED MATERIALS & INTERFACES 2023; 15:37728-37740. [PMID: 37501285 PMCID: PMC10416149 DOI: 10.1021/acsami.3c07552] [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: 05/26/2023] [Accepted: 07/19/2023] [Indexed: 07/29/2023]
Abstract
Despite promising optoelectronic features of N-doped polycyclic aromatic hydrocarbons (PAHs), their use as functional materials remains underdeveloped due to their limited post-functionalization. Facing this challenge, a novel design of N-doped PAHs with D-A-D electronic structure for thermally activated delayed fluorescence (TADF) emitters was performed. Implementing a set of auxiliary donors at the meta position of the protruding phenyl ring of quinoxaline triggers an increase in the charge-transfer property simultaneously decreasing the delayed fluorescence lifetime. This, in turn, contributes to a narrow (0.04-0.28 eV) singlet-triplet exchange energy split (ΔEST) and promotes a reverse intersystem crossing transition that is pivotal for an efficient TADF process. Boosting the electron-donating ability of our N-PAH scaffold leads to excellent photoluminescence quantum yield that was found in a solid-state matrix up to 96% (for phenoxazine-substituted derivatives, under air) with yellow or orange-red emission, depending on the specific compound. Organic light-emitting diodes (OLEDs) utilizing six, (D-A)-D, N-PAH emitters demonstrate a significant throughput with a maximum external quantum efficiency of 21.9% which is accompanied by remarkable luminance values which were found for all investigated devices in the range of 20,000-30,100 cd/m2 which is the highest reported to date for N-doped PAHs investigated in the OLED domain.
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Affiliation(s)
- Jakub Wagner
- Institute
of Organic Chemistry, Polish Academy of
Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Dharmendra Kumar
- Department
of Chemistry, Łódź University
of Technology, Stefana
Żeromskiego 114, 90-543 Łódź, Poland
| | - Michał Andrzej Kochman
- Institute
of Physical Chemistry, Polish Academy of
Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Tomasz Gryber
- Institute
of Physical Chemistry, Polish Academy of
Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Magdalena Grzelak
- Institute
of Organic Chemistry, Polish Academy of
Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Adam Kubas
- Institute
of Physical Chemistry, Polish Academy of
Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Przemysław Data
- Department
of Chemistry, Łódź University
of Technology, Stefana
Żeromskiego 114, 90-543 Łódź, Poland
| | - Marcin Lindner
- Institute
of Organic Chemistry, Polish Academy of
Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
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6
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Wang Y, Yan Q, Wang Z, Xu H. A flavonol-derived fluorescent probe for highly specific and sensitive detection of hydrazine in actual environmental samples and living zebrafish. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 288:122132. [PMID: 36442340 DOI: 10.1016/j.saa.2022.122132] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 11/08/2022] [Accepted: 11/16/2022] [Indexed: 06/16/2023]
Abstract
Hydrazine (N2H4) is a significant chemical reagent and widely applied in industrial field, which can bring potential risk to environmental safety and human health due to its high toxicity and potential carcinogenicity. In this paper, a flavonol-derived fluorescent probe named TB-N2H4 was rationally developed for detecting N2H4 based on the excited intramolecular proton transfer (ESIPT) principle. TB-N2H4 exhibited a remarkable fluorescence turn-on response toward N2H4 with a large Stokes shift of 191 nm. Moreover, TB-N2H4 could selectively recognize N2H4 over other competitive analytes, and displayed high sensitivity toward N2H4 with a low detection limit of 0.117 μM. The sensing mechanism of the probe TB-N2H4 for N2H4 was confirmed by theoretical calculation and HRMS analysis. This probe was able to quantitatively determine N2H4 in environmental water and soil samples. Additionally, TB-N2H4 was also successfully utilized for real-time tracking of the distribution of N2H4 in living zebrafish.
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Affiliation(s)
- Yu Wang
- Jiangsu Co-innovation Center of Efficient Processing and Utilization of Forest Resources, Key Laboratory of Forestry Genetics & Biotechnology of Ministry of Education, Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-forest Biomass, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, PR China
| | - Qi Yan
- Jiangsu Co-innovation Center of Efficient Processing and Utilization of Forest Resources, Key Laboratory of Forestry Genetics & Biotechnology of Ministry of Education, Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-forest Biomass, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, PR China
| | - Zhonglong Wang
- Jiangsu Co-innovation Center of Efficient Processing and Utilization of Forest Resources, Key Laboratory of Forestry Genetics & Biotechnology of Ministry of Education, Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-forest Biomass, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, PR China
| | - Haijun Xu
- Jiangsu Co-innovation Center of Efficient Processing and Utilization of Forest Resources, Key Laboratory of Forestry Genetics & Biotechnology of Ministry of Education, Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-forest Biomass, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, PR China.
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7
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Yu YJ, Liu FM, Meng XY, Ding LY, Liao LS, Jiang ZQ. Carbonyl-Containing Thermally Activated Delayed Fluorescence Emitters for Narrow-Band Electroluminescence. Chemistry 2023; 29:e202202628. [PMID: 36250810 DOI: 10.1002/chem.202202628] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Indexed: 11/23/2022]
Abstract
Carbonyl-containing derivatives show enduring vitality in the field of thermally activated delayed fluorescence (TADF) materials; they can realize high device efficiency by using both singlet and triplet excitons for electroluminescence. Recently, a system based on fused ketone/amine exhibited huge potential for constructing multi-resonance TADF (MR-TADF) emitters, which exhibit higher narrow-band emission than conventional TADF emitters with twisted donor-acceptor (D-A) structure. Herein, we summarize current research progress in both traditional and MR-type ketone derivatives with TADF characteristics for introducing the molecular design strategy of maintaining high device efficiency while keeping narrow-band emission profile. We hope this review can inspire the emergence of more high-performance narrow-band materials.
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Affiliation(s)
- You-Jun Yu
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, Jiangsu, 215123, P.R. China
| | - Fu-Ming Liu
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, Jiangsu, 215123, P.R. China
| | - Xin-Yue Meng
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, Jiangsu, 215123, P.R. China
| | - Ling-Yi Ding
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, Jiangsu, 215123, P.R. China
| | - Liang-Sheng Liao
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, Jiangsu, 215123, P.R. China
| | - Zuo-Quan Jiang
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, Jiangsu, 215123, P.R. China
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8
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Wu J, Zhang G. Periphery‐Core Strategy to Access a Bowl‐Shaped Molecule Bearing Multiple Heteroatoms. Angew Chem Int Ed Engl 2022; 61:e202208061. [DOI: 10.1002/anie.202208061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Indexed: 11/11/2022]
Affiliation(s)
- Jianrong Wu
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Products College of Chemical Engineering Nanjing Forestry University Longpan Road 159 Nanjing 210037 P. R. China
| | - Gang Zhang
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Products College of Chemical Engineering Nanjing Forestry University Longpan Road 159 Nanjing 210037 P. R. China
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9
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Wang W, Yuan Z, Wang S, Li X, Ji B, Xiao J. Effect of Annulation Mode of Twistarene on the Physical Property and Self‐Assembly Behavior of Functionalized Curved Aromatic Molecules. Chemistry 2022; 28:e202201233. [DOI: 10.1002/chem.202201233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Indexed: 11/09/2022]
Affiliation(s)
- Wei Wang
- College of Chemistry and Environmental Science Key Laboratory of Chemical Biology of Hebei Province Hebei University Baoding 071002 P. R. China
| | - Ziwei Yuan
- College of Chemistry and Environmental Science Key Laboratory of Chemical Biology of Hebei Province Hebei University Baoding 071002 P. R. China
| | - Sujuan Wang
- College of Chemistry and Environmental Science Key Laboratory of Chemical Biology of Hebei Province Hebei University Baoding 071002 P. R. China
| | - Xueqing Li
- College of Chemistry and Environmental Science Key Laboratory of Chemical Biology of Hebei Province Hebei University Baoding 071002 P. R. China
| | - Bingliang Ji
- College of Chemistry and Environmental Science Key Laboratory of Chemical Biology of Hebei Province Hebei University Baoding 071002 P. R. China
| | - Jinchong Xiao
- College of Chemistry and Environmental Science Key Laboratory of Chemical Biology of Hebei Province Hebei University Baoding 071002 P. R. China
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10
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Wu J, Zhang G. Periphery‐Core Strategy to Access a Bowl‐Shaped Molecule Bearing Multiple Heteroatoms. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202208061] [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)
- Jianrong Wu
- Nanjing Forestry University College of Chemical Engineering CHINA
| | - Gang Zhang
- Nanjing Forestry University College of Chemical Engineering Longpan Road 159 210037 Nanjing CHINA
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11
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Michalsky I, Gensch V, Walla C, Hoffmann M, Rominger F, Oeser T, Tegeder P, Dreuw A, Kivala M. Fully Bridged Triphenylamines Comprising Five- and Seven-Membered Rings. Chemistry 2022; 28:e202200326. [PMID: 35293646 PMCID: PMC9321823 DOI: 10.1002/chem.202200326] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Indexed: 11/07/2022]
Abstract
A family of fully bridged triphenylamines with embedded 5- and 7-membered rings is presented. The compounds are potent electron donors capable to undergo donor/acceptor interactions with strong cyano-based acceptors both in the solid state and solution. These interactions were evaluated by IR and UV/vis spectroscopy as well as X-ray crystallography. The vinylene-bridged compound was oxidized to the corresponding 1,2-diketone which readily underwent acid-catalyzed condensation with selected 1,2-phenylenediamines. The resulting π-extended quinoxaline derivatives represent valuable building blocks for the development of functional chromophores upon appropriate functionalization.
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Affiliation(s)
- Ina Michalsky
- Organisch-Chemisches InstitutUniversität HeidelbergIm Neuenheimer Feld 27069120HeidelbergGermany
- Centre for Advanced MaterialsUniversität HeidelbergIm Neuenheimer Feld 22569120HeidelbergGermany
| | - Viktoria Gensch
- Department Chemie und PharmazieUniversität Erlangen-NürnbergNikolaus-Fiebiger-Strasse 1091058ErlangenGermany
| | - Christian Walla
- Interdisziplinäres Zentrum für Wissenschaftliches RechnenUniversität HeidelbergIm Neuenheimer Feld 205 A69120HeidelbergGermany
| | - Marvin Hoffmann
- Interdisziplinäres Zentrum für Wissenschaftliches RechnenUniversität HeidelbergIm Neuenheimer Feld 205 A69120HeidelbergGermany
| | - Frank Rominger
- Organisch-Chemisches InstitutUniversität HeidelbergIm Neuenheimer Feld 27069120HeidelbergGermany
| | - Thomas Oeser
- Organisch-Chemisches InstitutUniversität HeidelbergIm Neuenheimer Feld 27069120HeidelbergGermany
| | - Petra Tegeder
- Physikalisch-Chemisches InstitutUniversität HeidelbergIm Neuenheimer Feld 25369120HeidelbergGermany
| | - Andreas Dreuw
- Interdisziplinäres Zentrum für Wissenschaftliches RechnenUniversität HeidelbergIm Neuenheimer Feld 205 A69120HeidelbergGermany
| | - Milan Kivala
- Organisch-Chemisches InstitutUniversität HeidelbergIm Neuenheimer Feld 27069120HeidelbergGermany
- Centre for Advanced MaterialsUniversität HeidelbergIm Neuenheimer Feld 22569120HeidelbergGermany
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12
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Wang Y, Zhang G. Effect of Molecular Shape on the Properties of Indolo[3,2,1‐jk]carbazole‐Based Compounds. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Yuannan Wang
- Nanjing Forestry University College of Chemical Engineering CHINA
| | - Gang Zhang
- Nanjing Forestry University College of Chemical Engineering Longpan Road 159 210037 Nanjing CHINA
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13
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Shang J, Wang R, Yuan C, Liu Z, Zhang H, Shao X. Monoazadichalcogenasumanenes: Synthesis, Structures, and Ring Reconstruction via Atom Transfer under Acidic Conditions. Angew Chem Int Ed Engl 2022; 61:e202117504. [DOI: 10.1002/anie.202117504] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Indexed: 11/10/2022]
Affiliation(s)
- Jihai Shang
- State Key Laboratory of Applied Organic Chemistry Lanzhou University Tianshui Southern Road 222 Lanzhou 730000 Gansu Province China
| | - Renjie Wang
- State Key Laboratory of Applied Organic Chemistry Lanzhou University Tianshui Southern Road 222 Lanzhou 730000 Gansu Province China
| | - Chengshan Yuan
- State Key Laboratory of Applied Organic Chemistry Lanzhou University Tianshui Southern Road 222 Lanzhou 730000 Gansu Province China
| | - Zitong Liu
- State Key Laboratory of Applied Organic Chemistry Lanzhou University Tianshui Southern Road 222 Lanzhou 730000 Gansu Province China
| | - Hao‐Li Zhang
- State Key Laboratory of Applied Organic Chemistry Lanzhou University Tianshui Southern Road 222 Lanzhou 730000 Gansu Province China
| | - Xiangfeng Shao
- State Key Laboratory of Applied Organic Chemistry Lanzhou University Tianshui Southern Road 222 Lanzhou 730000 Gansu Province China
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14
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Wagner J, Zimmermann Crocomo P, Kochman MA, Kubas A, Data P, Lindner M. Modular Nitrogen‐Doped Concave Polycyclic Aromatic Hydrocarbons for High‐Performance Organic Light‐Emitting Diodes with Tunable Emission Mechanisms**. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202202232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Jakub Wagner
- Institute of Organic Chemistry Polish Academy of Sciences Kasprzaka 44/52 01-224 Warsaw Poland
| | | | - Michał Andrzej Kochman
- Institute of Physical Chemistry Polish Academy of Sciences Kasprzaka 44/52 01-224 Warsaw Poland
| | - Adam Kubas
- Institute of Physical Chemistry Polish Academy of Sciences Kasprzaka 44/52 01-224 Warsaw Poland
| | - Przemysław Data
- Faculty of Chemistry Silesian University of Technology M. Strzody 9 44-100 Gliwice Poland
| | - Marcin Lindner
- Institute of Organic Chemistry Polish Academy of Sciences Kasprzaka 44/52 01-224 Warsaw Poland
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15
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Liu Z, Song W, Yang S, Yuan C, Liu Z, Zhang H, Shao X. Marriage of Heterobuckybowls with Triptycene: Molecular Waterwheels for Separating C
60
and C
70. Chemistry 2022; 28:e202200306. [DOI: 10.1002/chem.202200306] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Indexed: 12/15/2022]
Affiliation(s)
- Zhe Liu
- State Key Laboratory of Applied Organic Chemistry Lanzhou University Tianshui Southern Road 222 Lanzhou 730000, Gansu Province P. R. China
| | - Wenru Song
- State Key Laboratory of Applied Organic Chemistry Lanzhou University Tianshui Southern Road 222 Lanzhou 730000, Gansu Province P. R. China
| | - Shaojie Yang
- State Key Laboratory of Applied Organic Chemistry Lanzhou University Tianshui Southern Road 222 Lanzhou 730000, Gansu Province P. R. China
| | - Chengshan Yuan
- State Key Laboratory of Applied Organic Chemistry Lanzhou University Tianshui Southern Road 222 Lanzhou 730000, Gansu Province P. R. China
| | - Zitong Liu
- State Key Laboratory of Applied Organic Chemistry Lanzhou University Tianshui Southern Road 222 Lanzhou 730000, Gansu Province P. R. China
| | - Hao‐Li Zhang
- State Key Laboratory of Applied Organic Chemistry Lanzhou University Tianshui Southern Road 222 Lanzhou 730000, Gansu Province P. R. China
| | - Xiangfeng Shao
- State Key Laboratory of Applied Organic Chemistry Lanzhou University Tianshui Southern Road 222 Lanzhou 730000, Gansu Province P. R. China
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16
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Wagner J, Zimmermann Crocomo P, Kochman MA, Kubas A, Data P, Lindner M. Modular Nitrogen-Doped Concave Polycyclic Aromatic Hydrocarbons for High-Performance Organic Light-Emitting Diodes with Tunable Emission Mechanisms. Angew Chem Int Ed Engl 2022; 61:e202202232. [PMID: 35348258 PMCID: PMC9321062 DOI: 10.1002/anie.202202232] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Indexed: 11/10/2022]
Abstract
Although bowl‐shaped N‐pyrrolic polycyclic aromatic hydrocarbons (PAHs) can achieve excellent electron‐donating ability, their application for optoelectronics is hampered by typically low photoluminescence quantum yields (PLQYs). To address this issue, we report the synthesis and characterization of a series of curved and fully conjugated nitrogen‐doped PAHs. Through structural modifications to the electron‐accepting moiety, we are able to switch the mechanism of luminescence between thermally activated delayed fluorescence (TADF) and room‐temperature phosphorescence (RTP), and to tune the overall PLQY in the range from 9 % to 86 %. As a proof of concept, we constructed solid‐state organic light‐emitting diode (OLED) devices, which has not been explored to date in the context of concave N‐doped systems being TADF/RTP emitters. The best‐performing dye, possessing a peripheral trifluoromethyl group adjacent to the phenazine acceptor, exhibits yellow to orange emission with a maximum external quantum efficiency (EQE) of 12 %, which is the highest EQE in a curved D‐A embedded N‐PAH to date.
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Affiliation(s)
- Jakub Wagner
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224, Warsaw, Poland
| | | | - Michał Andrzej Kochman
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224, Warsaw, Poland
| | - Adam Kubas
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224, Warsaw, Poland
| | - Przemysław Data
- Faculty of Chemistry, Silesian University of Technology, M. Strzody 9, 44-100, Gliwice, Poland
| | - Marcin Lindner
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224, Warsaw, Poland
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17
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Fully conjugated azacorannulene dimer as large diaza[80]fullerene fragment. Nat Commun 2022; 13:1498. [PMID: 35314682 PMCID: PMC8938435 DOI: 10.1038/s41467-022-29106-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Accepted: 02/22/2022] [Indexed: 11/08/2022] Open
Abstract
AbstractA fully conjugated azacorannulene dimer with a large π-surface (76π system) was successfully synthesized from a fully conjugated bifunctional polycyclic aromatic azomethine ylide. This molecule represents an example of diaza[80]fullerene (C78N2) fragment molecule bearing two internal nitrogen atoms. X-ray crystallography analysis shows its boat-shaped structure with two terminal azacorannulenes bent in the same direction. The molecular shape leads to unique selective association with a dumbbell-shaped C60 dimer (C120) over C60 through shape recognition. Owing to its large π-surface and a narrow HOMO–LUMO gap, the azacorannulene dimer exhibits red fluorescence with a quantum yield of up to 31%. The utilization of the fully conjugated bifunctional azomethine ylide is a powerful method for the bottom-up synthesis of large multiazafullerene fragments, providing a step towards the selective total synthesis of multiazafullerenes.
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18
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Shang J, Wang R, Yuan C, Liu Z, Zhang HL, Shao X. Monoazadichalcogenasumanenes: Synthesis, Structures, and Ring Reconstruction via Atom Transfer under Acidic Conditions. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202117504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Jihai Shang
- Lanzhou University State Key Laboratory of Applied Organic Chemistry 730000 Lanzhou CHINA
| | - Renjie Wang
- Lanzhou University State Key Laboratory of Applied Organic Chemistry 730000 Lanzhou CHINA
| | - Chengshan Yuan
- Lanzhou University State Key Laboratory of Applied Organic Chemistry 730000 Lanzhou CHINA
| | - Zitong Liu
- Lanzhou University State Key Laboratory of Applied Organic Chemistry 730000 Lanzhou CHINA
| | - Hao-Li Zhang
- Lanzhou University State key Laboratory of Applied Organic Chemistry 730000 Lanzhou CHINA
| | - Xiangfeng Shao
- Lanzhou University State Key Laboratory of Applied Organic Chemistry 222 Tianshui Southern Road 730000 Lanzhou CHINA
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19
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Borissov A, Maurya YK, Moshniaha L, Wong WS, Żyła-Karwowska M, Stępień M. Recent Advances in Heterocyclic Nanographenes and Other Polycyclic Heteroaromatic Compounds. Chem Rev 2022; 122:565-788. [PMID: 34850633 PMCID: PMC8759089 DOI: 10.1021/acs.chemrev.1c00449] [Citation(s) in RCA: 215] [Impact Index Per Article: 107.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Indexed: 12/21/2022]
Abstract
This review surveys recent progress in the chemistry of polycyclic heteroaromatic molecules with a focus on structural diversity and synthetic methodology. The article covers literature published during the period of 2016-2020, providing an update to our first review of this topic (Chem. Rev. 2017, 117 (4), 3479-3716).
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Affiliation(s)
| | | | | | | | | | - Marcin Stępień
- Wydział Chemii, Uniwersytet
Wrocławski, ul. F. Joliot-Curie 14, 50-383 Wrocław, Poland
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20
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Li QQ, Hamamoto Y, Tan CCH, Sato H, Ito S. 1,3-Dipolar cycloaddition of azomethine ylides and imidoyl halides for synthesis of π-extended imidazolium salts. Org Chem Front 2022. [DOI: 10.1039/d2qo00941b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new synthetic approach to π-extended imidazolium salts is developed based on 1,3-dipolar cycloaddition of polycyclic aromatic azomethine ylides with imidoyl chlorides in the presence of cesium fluoride as a key additive.
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Affiliation(s)
- Qiang-Qiang Li
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
| | - Yosuke Hamamoto
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
| | - Cheryl Cai Hui Tan
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
| | - Hiroyasu Sato
- Rigaku Corporation, 3-9-12 Matsubara-Cho, Akishima, Tokyo 196-8666, Japan
| | - Shingo Ito
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
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21
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Gharpure SJ, Hande PE, Pandey SK, Samala G. TMSOTf-Mediated Formal [4 + 2] Cycloaddition-Retro-aza-Michael Cascade of Vinylogous Carbamates for the Synthesis of Highly Fluorescent Pyridocarbazoles. J Org Chem 2021; 86:16652-16665. [PMID: 34766500 DOI: 10.1021/acs.joc.1c01927] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Trimethylsilyl trifluoromethanesulfonate mediated dimerization reaction of vinylogous carbamates of carbazoles gave highly fluorescent pyridocarbazoles through a Povarov-type formal [4 + 2] cycloaddition-retro-aza-Michael cascade. The developed strategy was used to access indolo pyridocarbazole and quinolizinocarbazolone in an expeditious manner. Various coupling reactions were successfully performed on synthesized pyridocarbazoles to study the effect of electronics of substitution on photophysical properties. Synthesized carbazoles possess excellent photophysical properties with high quantum yields (ΦF). Fluorescent carbazole dicarboxylic acid showed potential as a pH probe to give a linear response to pH over a very wide range (7.0-3.0) reflecting high efficiency.
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Affiliation(s)
- Santosh J Gharpure
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Pankaj E Hande
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Surya K Pandey
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Ganesh Samala
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
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22
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Abstract
Buckybowls have concave and convex surfaces with distinct π-electron cloud distribution, and consequently they show unique structural and electronic features as compared to planar aromatic polycycles. Doping the π-framework of buckybowls with heteroatoms is an efficient scheme to tailor inherent properties, because the nature of heteroatoms plays a pivotal role in the structural and electronic characteristics of the resulting hetera-buckybowls. The design, synthesis, and derivatization of hetera-buckybowls open an avenue for obtaining fascinating organic entities not only of fundamental importance but also of promising applications in optoelectronics. In this review, we summarize the advances in hetera-buckybowl chemistry, particularly the synthetic strategies toward these scaffolds.
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Affiliation(s)
- Wenbo Wang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, Gansu Province, China.
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23
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Song Y, Zhang G. Effect of Fusion Manner of Concave Molecules on the Properties of Resulting Nanoboats. Org Lett 2021; 23:491-496. [PMID: 33403857 DOI: 10.1021/acs.orglett.0c04008] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
A boat-shaped compound, which can be viewed as the fusion of two concave molecules with crossed quinacridone and indolocarbazole throughout, was synthesized and characterized. The investigation determined that the fusion manner of two concave molecules has little influence on the molecular curvature and aromaticity when compared with its congener containing crossed indolocarbazole throughout. The situation of carbonyl groups is critical in adjusting the electronic structure and physicochemical properties due to the fixed position of nitrogen atoms.
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Affiliation(s)
- Yujun Song
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Products, College of Chemical Engineering, Nanjing Forestry University, Longpan Road 159, Nanjing 210037, P.R. China
| | - Gang Zhang
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Products, College of Chemical Engineering, Nanjing Forestry University, Longpan Road 159, Nanjing 210037, P.R. China
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24
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Zhu G, Zhang G. Access to a Phthalazine Derivative Through an Angular cis-Quinacridone. J Org Chem 2021; 86:1198-1203. [PMID: 33284013 DOI: 10.1021/acs.joc.0c02344] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Intramolecular electrophilic cyclization of a bisanthranilate afforded an angular cis-quinacridone compound, which condensed with hydrazine to give a phthalazine derivative. A [2+2+2] cyclization reaction occurred at the C-N double bond position of phthalazine when reacted with dimethyl acetylenedicarboxylate. The structures of these novel compounds were confirmed by crystallographic analysis. The phthalazine derivative decomposes back to quinacridone at ambient condition in the dark and as a solid with a half lifetime of about 22 months.
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Affiliation(s)
- Guanxing Zhu
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Products, College of Chemical Engineering, Nanjing Forestry University, Longpan Road 159, Nanjing, 210037, People's Republic of China
| | - Gang Zhang
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Products, College of Chemical Engineering, Nanjing Forestry University, Longpan Road 159, Nanjing, 210037, People's Republic of China
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25
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Zhu G, Song Y, Zhang Q, Ding W, Chen X, Wang Y, Zhang G. Modulating the properties of buckybowls containing multiple heteroatoms. Org Chem Front 2021. [DOI: 10.1039/d0qo01452d] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Nitrogen-centered buckybowls with sulfur decoration at the rim were synthesized and characterized. The buckybowls demonstrate tunable properties depending on the state of the sulfur atom.
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Affiliation(s)
- Guanxing Zhu
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Products
- College of Chemical Engineering
- Nanjing Forestry University
- Nanjing
- P. R. China
| | - Yujun Song
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Products
- College of Chemical Engineering
- Nanjing Forestry University
- Nanjing
- P. R. China
| | - Qianyu Zhang
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Products
- College of Chemical Engineering
- Nanjing Forestry University
- Nanjing
- P. R. China
| | - Weiwei Ding
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Products
- College of Chemical Engineering
- Nanjing Forestry University
- Nanjing
- P. R. China
| | - Xinxin Chen
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Products
- College of Chemical Engineering
- Nanjing Forestry University
- Nanjing
- P. R. China
| | - Yuannan Wang
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Products
- College of Chemical Engineering
- Nanjing Forestry University
- Nanjing
- P. R. China
| | - Gang Zhang
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Products
- College of Chemical Engineering
- Nanjing Forestry University
- Nanjing
- P. R. China
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26
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Liu Z, Song W, Yan C, Liu Z, Zhang HL, Shao X. Transforming electron-rich hetero-buckybowls into electron-deficient polycycles. Org Chem Front 2021. [DOI: 10.1039/d1qo00702e] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Oxidation of trichalcogenasumanenes (TCSs) with NO species results in the simultaneous formation of ortho-quinone and diester groups. This reaction enables the transformation of electron-rich TCSs into electron-deficient polycycles.
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Affiliation(s)
- Zhe Liu
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, Tianshui Southern Road 222, Gansu Province, China
| | - Wenru Song
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, Tianshui Southern Road 222, Gansu Province, China
| | - Chaoxian Yan
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, Tianshui Southern Road 222, Gansu Province, China
| | - Zitong Liu
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, Tianshui Southern Road 222, Gansu Province, China
| | - Hao-Li Zhang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, Tianshui Southern Road 222, Gansu Province, China
| | - Xiangfeng Shao
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, Tianshui Southern Road 222, Gansu Province, China
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27
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Kirschbaum T, Rominger F, Mastalerz M. An Isosteric Triaza Analogue of a Polycyclic Aromatic Hydrocarbon Monkey Saddle. Chemistry 2020; 26:14560-14564. [PMID: 32539193 PMCID: PMC7756504 DOI: 10.1002/chem.202002826] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Indexed: 01/06/2023]
Abstract
Since a few years, the interest in negatively-curved fused polycyclic aromatic hydrocarbons (PAHs) has significantly increased. Recently, the first chiral negatively-curved PAH with the topology of a monkey saddle was introduced. Herein the synthesis of its triaza congener is reported. The influence of this CH↔N exchange on photophysical and electrochemical properties is studied as well as the isomerization process of the enantiomers. The aza analogue has a significantly higher inversion barrier, which makes it easier to handle at room temperature. All experimental results are underpinned by theoretical DFT calculations.
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Affiliation(s)
- Tobias Kirschbaum
- Organisch-Chemisches InstitutRuprecht-Karls-Universität HeidelbergIm Neuenheimer Feld 27069120HeidelbergGermany
| | - Frank Rominger
- Organisch-Chemisches InstitutRuprecht-Karls-Universität HeidelbergIm Neuenheimer Feld 27069120HeidelbergGermany
| | - Michael Mastalerz
- Organisch-Chemisches InstitutRuprecht-Karls-Universität HeidelbergIm Neuenheimer Feld 27069120HeidelbergGermany
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28
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Gao H, Zhang G. Synthesis, Structure and Properties of Fused π‐Extended Acridone Derivatives. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000871] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Hongshuai Gao
- Jiangsu Co‐Innovation Center for Efficient Processing and Utilization of Forest Products College of Chemical Engineering Nanjing Forestry University Longpan Road 159 210037 Nanjing P. R. China
| | - Gang Zhang
- Jiangsu Co‐Innovation Center for Efficient Processing and Utilization of Forest Products College of Chemical Engineering Nanjing Forestry University Longpan Road 159 210037 Nanjing P. R. China
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29
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Abstract
Bowl-shaped molecules, which can be viewed as fragments of fullerenes, have been extensively studied owing to their interesting fundamental properties derived from their unique geometry, and the possibilities for their further functionalization, with potential applications in the field of materials science. Most of the reported concave compounds are based on corannulene or sumanene, the simplest representative fullerene subunits possessing isolated pentagons. Syntheses of concave molecules bearing adjacent pentagons have rarely been reported. Inspired by the structure of N-heterotriangulene, the construction of bowl-shaped compounds containing two fused pentagons and a central nitrogen atom is discussed. Further surface extension of such concave molecules can result in the formation of boat-shaped compounds containing embedded double isolated nitrogen atoms.
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