1
|
Gao Y, Wang Y, Guo Z, Wan Y, Xue Z, Han Y, Yang W, Ma X. Ultrafast photophysics of an orange-red thermally activated delayed fluorescence emitter: the role of external structural restraint. Chem Sci 2024; 15:6410-6420. [PMID: 38699269 PMCID: PMC11062098 DOI: 10.1039/d4sc00460d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Accepted: 03/21/2024] [Indexed: 05/05/2024] Open
Abstract
The application of thermally activated delay fluorescence (TADF) emitters in the orange-red regime usually suffers from the fast non-radiative decay of emissive singlet states (kSNR), leading to low emitting efficiency in corresponding organic light-emitting diode (OLED) devices. Although kSNR has been quantitatively described by energy gap law, how ultrafast molecular motions are associated with the kSNR of TADF emitters remains largely unknown, which limits the development of new strategies for improving the emitting efficiency of corresponding OLED devices. In this work, we employed two commercial TADF emitters (TDBA-Ac and PzTDBA) as a model system and attempted to clarify the relationship between ultrafast excited-state structural relaxation (ES-SR) and kSNR. Spectroscopic and theoretical investigations indicated that S1/S0 ES-SR is directly associated with promoting vibrational modes, which are considerably involved in electronic-vibrational coupling through the Huang-Rhys factor, while kSNR is largely affected by the reorganization energy of the promoting modes. By restraining S1/S0 ES-SR in doping films, the kSNR of TADF emitters can be greatly reduced, resulting in high emitting efficiency. Therefore, by establishing the connection among S1/S0 ES-SR, promoting modes and kSNR of TADF emitters, our work clarified the key role of external structural restraint for achieving high emitting efficiency in TADF-based OLED devices.
Collapse
Affiliation(s)
- Yixuan Gao
- Institute of Molecular Plus, Tianjin University Tianjin 300072 P. R. China
| | - Yaxin Wang
- Institute of Molecular Plus, Tianjin University Tianjin 300072 P. R. China
| | - Zilong Guo
- Institute of Molecular Plus, Tianjin University Tianjin 300072 P. R. China
| | - Yan Wan
- College of Chemistry, Beijing Normal University Beijing 100875 P. R. China
| | - Zheng Xue
- Engineering Research Center for Nanomaterials, Henan University Kaifeng 475004 P. R. China
| | - Yandong Han
- Engineering Research Center for Nanomaterials, Henan University Kaifeng 475004 P. R. China
| | - Wensheng Yang
- Institute of Molecular Plus, Tianjin University Tianjin 300072 P. R. China
- Engineering Research Center for Nanomaterials, Henan University Kaifeng 475004 P. R. China
| | - Xiaonan Ma
- Institute of Molecular Plus, Tianjin University Tianjin 300072 P. R. China
| |
Collapse
|
2
|
Yu Q, Li X, Shen C, Yu Z, Guan J, Zheng J. Blue-Shifted and Broadened Fluorescence Enhancement by Visible and Mode-Selective Infrared Double Excitations. J Phys Chem A 2024; 128:2912-2922. [PMID: 38572812 DOI: 10.1021/acs.jpca.3c07060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2024]
Abstract
Mode-selective vibrational excitations to modify the electronic states of fluorescein dianion in methanol solutions are carried out with a femtosecond visible pulse synchronized with a tunable high-power, narrow-band picosecond infrared (IR) pulse. In this work, simultaneous intensity enhancement, peak blueshift, and line width broadening of fluorescence are observed in the visible/IR double resonance experiments. Comprehensive investigations on the modulation mechanism with scanning the vibrational excitation frequencies, tuning the time delay between the two excitation pulses, theoretical calculations, and nonlinear and linear spectroscopic measurements suggest that the fluorescence intensity enhancement is caused by the increase of the Franck-Condon factor induced by the vibrational excitations at the electronic ground state. Various enhancement effects are observed as vibrations initially excited by the IR photons relax to populate the vibrational modes of lower frequencies. The peak blueshift and line width broadening are caused by both increasing the Franck-Condon factors among different subensembles because of IR pre-excitation and the long-lived processes induced by the initial IR excitation. The results demonstrate that the fluorescence from the visible/IR double resonance experiments is not a simple sum frequency effect, and vibrational relaxations can produce profound effects modifying luminescence.
Collapse
Affiliation(s)
- Qirui Yu
- College of Chemistry and Molecular Engineering, Beijing National Laboratory for Molecular Sciences, Peking University, Beijing 100871, China
| | - Xinmao Li
- College of Chemistry and Molecular Engineering, Beijing National Laboratory for Molecular Sciences, Peking University, Beijing 100871, China
| | - Chengzhen Shen
- College of Chemistry and Molecular Engineering, Beijing National Laboratory for Molecular Sciences, Peking University, Beijing 100871, China
| | - Zhihao Yu
- College of Chemistry and Molecular Engineering, Beijing National Laboratory for Molecular Sciences, Peking University, Beijing 100871, China
| | - Jianxin Guan
- College of Chemistry and Molecular Engineering, Beijing National Laboratory for Molecular Sciences, Peking University, Beijing 100871, China
| | - Junrong Zheng
- College of Chemistry and Molecular Engineering, Beijing National Laboratory for Molecular Sciences, Peking University, Beijing 100871, China
| |
Collapse
|
3
|
Ren C, Wang Z, Ou H, Wang T, Zhao Z, Wei Y, Yuan H, Tan Y, Yuan WZ. Multi-Responsive Afterglows from Aqueous Processable Amorphous Polysaccharide Films. SMALL METHODS 2024; 8:e2300243. [PMID: 37491782 DOI: 10.1002/smtd.202300243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 07/04/2023] [Indexed: 07/27/2023]
Abstract
Polymer-based room-temperature phosphorescence (RTP) materials, especially polysaccharide-based RTP materials, earn sustained attention in the fields of anti-counterfeiting, data encryption, and optoelectronics owing to their green regeneration, flexibility, and transparency. However, those with both ultralong phosphorescence lifetime and excitation wavelength-dependent afterglow are rarely reported. Herein, a kind of amorphous RTP material with ultralong lifetime of up to 2.52 s is fabricated by covalently bonding sodium alginate (SA) with arylboronic acid in the aqueous phase. The resulting polymer film exhibits distinguished RTP performance with excitation-dependent emissions from cyan to green. Specifically, by co-doping with other fluorescent dyes, further regulation of the afterglow color from cyan to yellowish-green and near-white can be achieved through triplet-to-singlet Förster resonance energy transfer. In addition, the water-sensitive properties of hydrogen bonds endow the RTP property of SA-based materials with water/heat-responsive characteristics. On account of the color-tunable and stimuli-responsive afterglows, these smart materials are successfully applied in data encryption and anti-counterfeiting.
Collapse
Affiliation(s)
- Chunguang Ren
- State Key Laboratory of Bio-Fibers and Eco-Textiles, Collaborative Innovation Center of Marine Biobased Fiber and Ecological Textile Technology, College of Materials Science and Engineering, Qingdao University, No. 308 Ningxia Rd., Shinan District, Qingdao, 266071, China
| | - Zhengshuo Wang
- State Key Laboratory of Bio-Fibers and Eco-Textiles, Collaborative Innovation Center of Marine Biobased Fiber and Ecological Textile Technology, College of Materials Science and Engineering, Qingdao University, No. 308 Ningxia Rd., Shinan District, Qingdao, 266071, China
| | - Hanlin Ou
- State Key Laboratory of Bio-Fibers and Eco-Textiles, Collaborative Innovation Center of Marine Biobased Fiber and Ecological Textile Technology, College of Materials Science and Engineering, Qingdao University, No. 308 Ningxia Rd., Shinan District, Qingdao, 266071, China
| | - Tianjie Wang
- State Key Laboratory of Bio-Fibers and Eco-Textiles, Collaborative Innovation Center of Marine Biobased Fiber and Ecological Textile Technology, College of Materials Science and Engineering, Qingdao University, No. 308 Ningxia Rd., Shinan District, Qingdao, 266071, China
| | - Zhipeng Zhao
- State Key Laboratory of Bio-Fibers and Eco-Textiles, Collaborative Innovation Center of Marine Biobased Fiber and Ecological Textile Technology, College of Materials Science and Engineering, Qingdao University, No. 308 Ningxia Rd., Shinan District, Qingdao, 266071, China
| | - Yuting Wei
- State Key Laboratory of Bio-Fibers and Eco-Textiles, Collaborative Innovation Center of Marine Biobased Fiber and Ecological Textile Technology, College of Materials Science and Engineering, Qingdao University, No. 308 Ningxia Rd., Shinan District, Qingdao, 266071, China
| | - Hua Yuan
- State Key Laboratory of Bio-Fibers and Eco-Textiles, Collaborative Innovation Center of Marine Biobased Fiber and Ecological Textile Technology, College of Materials Science and Engineering, Qingdao University, No. 308 Ningxia Rd., Shinan District, Qingdao, 266071, China
| | - Yeqiang Tan
- State Key Laboratory of Bio-Fibers and Eco-Textiles, Collaborative Innovation Center of Marine Biobased Fiber and Ecological Textile Technology, College of Materials Science and Engineering, Qingdao University, No. 308 Ningxia Rd., Shinan District, Qingdao, 266071, China
| | - Wang Zhang Yuan
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Lab of Electrical Insulation and Thermal Aging, Shanghai Jiao Tong University, No. 800 Dongchuan Rd., Minhang District, Shanghai, 200240, China
| |
Collapse
|
4
|
Mahaan R, John Bosco A. Sulfur Oxidation State and Substituents Influenced Multifunctional Organic Luminophores in BTP Core for OLEDs: A Computational Study on RTP, TADF Emitter and Sensitizer. J Phys Chem A 2023; 127:10570-10582. [PMID: 38063023 DOI: 10.1021/acs.jpca.3c05259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2023]
Abstract
The exploration of triplet excitons in thermally activated delayed fluorescence (TADF) and room-temperature phosphorescence (RTP) molecules has become a subject of significant attention and interest in recent studies. This study employed density functional theory (DFT) and time-dependent DFT theoretical methods to delve into the intricate relationship between the molecular structure and properties of molecules designed with the oxidation of sulfur atoms (S, SO, and SO2) in benzothiazinophenothiazine (BTP) core units. The calculations revealed that as the oxidation state of the sulfur atom increased, the BTP derivatives exhibited elevated ionization potentials (IPs), electron affinities (EAs), and triplet energies (ET), accompanied by reduced reorganization energies (λ), singlet energies (ES), and a S1-T1 energy gap (ΔEST). Additionally, the decrease in the exchange energy prompts a shift in the excited-state properties of molecules, transitioning them from hybridized local and charge transfer (HLCT) to charge transfer (CT) in the S1 state while maintaining their HLCT character in the T1 state. The sulfur oxidation process systematically decreases spin-orbit coupling magnitudes in the S1-T1 and T1-S0 pathways while increasing the KRISC rate, signifying a reduced propensity for phosphorescence radiative decay in oxidized molecules. Thorough investigations have explored the screening effect and orbital mixing of lone pair electrons in sulfur atoms, satisfying the desired criteria for a multifunctional RTP, TADF emitter and sensitizer.
Collapse
Affiliation(s)
- Ramalingam Mahaan
- Advanced Materials Chemistry Laboratory, Department of Chemistry, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu 603 203, India
| | - Aruljothy John Bosco
- Advanced Materials Chemistry Laboratory, Department of Chemistry, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu 603 203, India
| |
Collapse
|
5
|
Zhang Y, Zhang S, Liu G, Sun Q, Xue S, Yang W. Rational molecular and doping strategies to obtain organic polymers with ultralong RTP. Chem Sci 2023; 14:5177-5181. [PMID: 37206397 PMCID: PMC10189905 DOI: 10.1039/d3sc01276j] [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: 03/09/2023] [Accepted: 04/17/2023] [Indexed: 05/21/2023] Open
Abstract
Organic-doped polymers and room-temperature phosphorescence (RTP) mechanisms have been widely reported. However, RTP lifetimes >3 s are rare and RTP-enhancing strategies are incompletely understood. Herein, we demonstrate a rational molecular doping strategy to obtain ultralong-lived, yet bright RTP polymers. The n-π* transitions of boron- and nitrogen-containing heterocyclic compounds can promote a triplet-state population, and the grafting of boronic acid onto polyvinyl alcohol can inhibit molecular thermal deactivation. However, excellent RTP properties were achieved by grafting 1-0.1% (N-phenylcarbazol-2-yl)-boronic acid rather than (2-/3-/4-(carbazol-9-yl)phenyl)boronic acids to afford record-breaking ultralong RTP lifetimes up to 3.517-4.444 s. These results showed that regulation of the interacting position between the dopant and matrix molecules to directly confine the triplet chromophore could more effectively stabilize triplet excitons, disclosing a rational molecular-doping strategy for achieving polymers with ultralong RTP. Based on the energy-donor function of blue RTP, an ultralong red fluorescent afterglow was demonstrated by co-doping with an organic dye.
Collapse
Affiliation(s)
- Yuefa Zhang
- Key Laboratory of Rubber-plastics of Ministry of Education/Shandong Provincial Key Laboratory of Rubber-plastics, School of Polymer Science & Engineering, Qingdao University of Science &Technology Qingdao China
| | - Shiguo Zhang
- Key Laboratory of Rubber-plastics of Ministry of Education/Shandong Provincial Key Laboratory of Rubber-plastics, School of Polymer Science & Engineering, Qingdao University of Science &Technology Qingdao China
| | - Guanyu Liu
- Key Laboratory of Rubber-plastics of Ministry of Education/Shandong Provincial Key Laboratory of Rubber-plastics, School of Polymer Science & Engineering, Qingdao University of Science &Technology Qingdao China
| | - Qikun Sun
- Key Laboratory of Rubber-plastics of Ministry of Education/Shandong Provincial Key Laboratory of Rubber-plastics, School of Polymer Science & Engineering, Qingdao University of Science &Technology Qingdao China
| | - Shanfeng Xue
- Key Laboratory of Rubber-plastics of Ministry of Education/Shandong Provincial Key Laboratory of Rubber-plastics, School of Polymer Science & Engineering, Qingdao University of Science &Technology Qingdao China
| | - Wenjun Yang
- Key Laboratory of Rubber-plastics of Ministry of Education/Shandong Provincial Key Laboratory of Rubber-plastics, School of Polymer Science & Engineering, Qingdao University of Science &Technology Qingdao China
| |
Collapse
|
6
|
Jiang D, Lu T, Du C, Liu F, Yan Z, Hu D, Shang A, Gao L, Lu P, Ma Y. Utilizing morpholine for purely organic room temperature phosphors. Sci China Chem 2023. [DOI: 10.1007/s11426-022-1507-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2023]
|
7
|
Chen S, Li Z, Hu K, Feng W, Mao G, Xiao F, Deng GJ. Three-component selective synthesis of phenothiazines and bis-phenothiazines under metal-free conditions. Org Biomol Chem 2023; 21:1920-1926. [PMID: 36752306 DOI: 10.1039/d3ob00055a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
An iodine-containing reagent promoted three-component method for the selective synthesis of phenothiazines and bis-phenothiazines has been developed. The present protocol starts from simple and easily available cyclohexanones, elemental sulfur, and inorganic ammonium salts, selectively producing phenothiazines and bis-phenothiazines in satisfactory yields under aerobic conditions. This method has the advantages of simple and readily available starting materials and metal-free conditions, affording a facile and practical approach for the preparation of phenothiazines and bis-phenothiazines.
Collapse
Affiliation(s)
- Shanping Chen
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, 411105, P. R. China.
| | - Zhuoqin Li
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, 411105, P. R. China.
| | - Kai Hu
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, 411105, P. R. China.
| | - Wei Feng
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, 411105, P. R. China.
| | - Guojiang Mao
- School of Chemistry and Chemical Engineering, Henan Normal University Xinxiang, 453007, P. R. China
| | - Fuhong Xiao
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, 411105, P. R. China.
| | - Guo-Jun Deng
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, 411105, P. R. China.
| |
Collapse
|
8
|
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.
Collapse
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
| |
Collapse
|
9
|
Jovaišaitė J, Kirschner S, Raišys S, Kreiza G, Baronas P, Juršėnas S, Wagner M. Diboraanthracene-Doped Polymer Systems for Colour-Tuneable Room-Temperature Organic Afterglow. Angew Chem Int Ed Engl 2023; 62:e202215071. [PMID: 36413097 PMCID: PMC10107698 DOI: 10.1002/anie.202215071] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 11/16/2022] [Accepted: 11/22/2022] [Indexed: 11/23/2022]
Abstract
Organic ultralong room temperature phosphorescence (RTP), or organic afterglow, is a unique phenomenon, gaining widespread attention due to its far-reaching application potential and fundamental interest. Here, two laterally expanded 9,10-dimesityl-dihydro-9,10-diboraanthracene (DBA) derivatives are demonstrated as excellent afterglow materials for red and blue-green light emission, which is traced back to persistent thermally activated delayed fluorescence and RTP. The lateral substitution of polycyclic DBA scaffold, together with weak transversal electron-donating mesityl groups, ensures the optimal molecular properties for (reverse) intersystem crossing and long-lived triplet states in a rigid poly(methyl methacrylate) matrix. The achieved afterglow emission quantum yields of up to 3 % and 15 %, afterglow lifetimes up to 0.8 s and 3.2 s and afterglow durations up to 5 s and 25 s (for red and blue-green emitters, respectively) are attributed to the properties of single molecules.
Collapse
Affiliation(s)
- Justina Jovaišaitė
- Institute of Photonics and Nanotechnology, Vilnius University, Saulėtekis av. 3, 10257, Vilnius, Lithuania
| | - Sven Kirschner
- Institut für Anorganische Chemie, Goethe-Universität Frankfurt, Max-von-Laue-Strasse 7, 60438, Frankfurt a. Main, Germany.,EaStCHEM School of Chemistry, The University of Edinburgh, David Brewster Road, Edinburgh, EH9 3FJ, UK
| | - Steponas Raišys
- Institute of Photonics and Nanotechnology, Vilnius University, Saulėtekis av. 3, 10257, Vilnius, Lithuania
| | - Gediminas Kreiza
- Institute of Photonics and Nanotechnology, Vilnius University, Saulėtekis av. 3, 10257, Vilnius, Lithuania
| | - Paulius Baronas
- Institute of Photonics and Nanotechnology, Vilnius University, Saulėtekis av. 3, 10257, Vilnius, Lithuania
| | - Saulius Juršėnas
- Institute of Photonics and Nanotechnology, Vilnius University, Saulėtekis av. 3, 10257, Vilnius, Lithuania
| | - Matthias Wagner
- Institut für Anorganische Chemie, Goethe-Universität Frankfurt, Max-von-Laue-Strasse 7, 60438, Frankfurt a. Main, Germany
| |
Collapse
|
10
|
Zhang X, Qian C, Ma Z, Fu X, Li Z, Jin H, Chen M, Jiang H, Ma Z. A Class of Organic Units Featuring Matrix-Controlled Color-Tunable Ultralong Organic Room Temperature Phosphorescence. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2206482. [PMID: 36567308 PMCID: PMC9875667 DOI: 10.1002/advs.202206482] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Indexed: 06/17/2023]
Abstract
A novel class of organic units (N-1 and N-2) and their derivatives (PNNA-1 and PNNA-2) with excellent property of ultralong organic room temperature phosphorescence (UORTP) is reported. In this work, N-1, N-2, and their derivatives function as the guests, while organic powders (PNCz, BBP, DBT) and polymethyl methacrylate (PMMA) serve as the host matrixes. Amazingly, the color of phosphorescence can be tuned in different states or by varying the host matrixes. At 77 K, all molecules show green afterglow in the monomer state but yellow afterglow in the aggregated state because strong intermolecular interactions exist in the self-aggregate and induce a redshift of the afterglow. In particular, PNNA-1 and PNNA-2 demonstrate distinctive photoactivated green UORTP in the PMMA film owing to the generation of their cation radicals. Whereas the PNNA-1@PNCz and PNNA-2@PNCz doping powders give out yellow UORTP, showing matrix-controlled color-tunable UORTP. In PNCz, the cation radicals of PNNA-1 and PNNA-2 can stay stably and form strong intermolecular interactions with PNCz, leading to a redshift of ultralong phosphorescence.
Collapse
Affiliation(s)
- Xue Zhang
- Beijing Advanced Innovation Center for Soft Matter Science and EngineeringState Key Laboratory of Organic‐Inorganic CompositesCollege of Chemical EngineeringBeijing University of Chemical TechnologyBeijing100029China
| | - Chen Qian
- Beijing Advanced Innovation Center for Soft Matter Science and EngineeringState Key Laboratory of Organic‐Inorganic CompositesCollege of Chemical EngineeringBeijing University of Chemical TechnologyBeijing100029China
| | - Zhimin Ma
- Beijing National Laboratory for Molecular SciencesKey Laboratory of Polymer Chemistry and Physics of the Ministry of EducationCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing100871China
| | - Xiaohua Fu
- Beijing Advanced Innovation Center for Soft Matter Science and EngineeringState Key Laboratory of Organic‐Inorganic CompositesCollege of Chemical EngineeringBeijing University of Chemical TechnologyBeijing100029China
| | - Zewei Li
- Beijing National Laboratory for Molecular SciencesKey Laboratory of Polymer Chemistry and Physics of the Ministry of EducationCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing100871China
| | - Huiwen Jin
- Beijing Advanced Innovation Center for Soft Matter Science and EngineeringState Key Laboratory of Organic‐Inorganic CompositesCollege of Chemical EngineeringBeijing University of Chemical TechnologyBeijing100029China
| | - Mingxing Chen
- Beijing National Laboratory for Molecular SciencesKey Laboratory of Polymer Chemistry and Physics of the Ministry of EducationCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing100871China
| | - Hong Jiang
- Beijing National Laboratory for Molecular SciencesKey Laboratory of Polymer Chemistry and Physics of the Ministry of EducationCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing100871China
| | - Zhiyong Ma
- Beijing Advanced Innovation Center for Soft Matter Science and EngineeringState Key Laboratory of Organic‐Inorganic CompositesCollege of Chemical EngineeringBeijing University of Chemical TechnologyBeijing100029China
| |
Collapse
|
11
|
Geng M, Kuang J, Fang W, Miao M, Ma Y. Facile construction of C, N-disulfonated 5-amino pyrazoles through an iodine-catalyzed cascade reaction. Org Biomol Chem 2022; 20:8187-8191. [DOI: 10.1039/d2ob01647h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
A green and facile synthesis of previously unreported C,N-disulfonated 5-amino pyrazoles was established through an iodine-catalyzed cascade reaction.
Collapse
Affiliation(s)
- Meiqi Geng
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, P. R. China
- Institute of Advanced Studies and School of Pharmaceutical Sciences, Taizhou University, Jiaojiang 318000, Zhejiang, China
| | - Jinqiang Kuang
- Institute of Advanced Studies and School of Pharmaceutical Sciences, Taizhou University, Jiaojiang 318000, Zhejiang, China
| | - Weiwei Fang
- International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University (NFU), Nanjing 210037, China
| | - Maozhong Miao
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, P. R. China
| | - Yongmin Ma
- Institute of Advanced Studies and School of Pharmaceutical Sciences, Taizhou University, Jiaojiang 318000, Zhejiang, China
| |
Collapse
|