1
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Knorr G, Bossi ML, Butkevich AN, Hell SW. Synthesis of Thioxanthone 10,10-Dioxides and Sulfone-Fluoresceins via Pd-Catalyzed Sulfonylative Homocoupling. Org Lett 2024; 26:945-949. [PMID: 38236781 PMCID: PMC10845149 DOI: 10.1021/acs.orglett.3c04300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 01/08/2024] [Accepted: 01/12/2024] [Indexed: 02/03/2024]
Abstract
Our report describes the facile and scalable preparation of 9H-thioxanthen-9-one 10,10-dioxides via Pd-catalyzed sulfonylative homocoupling of the appropriately substituted benzophenones. This transformation provides a straightforward route to previously unreported sulfone-fluoresceins and -fluorones. Several examples of these red fluorescent dyes have been prepared, characterized, and evaluated as live-cell permeant labels compatible with super-resolution fluorescence microscopy with 775 nm stimulated emission depletion.
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Affiliation(s)
- Gergely Knorr
- Department
of Optical Nanoscopy, Max Planck Institute
for Medical Research, Jahnstraße 29, 69120 Heidelberg, Germany
| | - Mariano L. Bossi
- Department
of Optical Nanoscopy, Max Planck Institute
for Medical Research, Jahnstraße 29, 69120 Heidelberg, Germany
| | - Alexey N. Butkevich
- Department
of Optical Nanoscopy, Max Planck Institute
for Medical Research, Jahnstraße 29, 69120 Heidelberg, Germany
| | - Stefan W. Hell
- Department
of Optical Nanoscopy, Max Planck Institute
for Medical Research, Jahnstraße 29, 69120 Heidelberg, Germany
- Department
of NanoBiophotonics, Max Planck Institute
for Multidisciplinary Sciences, Am Faßberg 11, 37077 Göttingen, Germany
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2
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Dai XY, Huo M, Liu Y. Phosphorescence resonance energy transfer from purely organic supramolecular assembly. Nat Rev Chem 2023; 7:854-874. [PMID: 37993737 DOI: 10.1038/s41570-023-00555-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/05/2023] [Indexed: 11/24/2023]
Abstract
Phosphorescence energy transfer systems have been applied in encryption, biomedical imaging and chemical sensing. These systems exhibit ultra-large Stokes shifts, high quantum yields and are colour-tuneable with long-wavelength afterglow fluorescence (particularly in the near-infrared) under ambient conditions. This review discusses triplet-to-singlet PRET or triplet-to-singlet-to-singlet cascaded PRET systems based on macrocyclic or assembly-confined purely organic phosphorescence introducing the critical toles of supramolecular noncovalent interactions in the process. These interactions promote intersystem crossing, restricting the motion of phosphors, minimizing non-radiative decay and organizing donor-acceptor pairs in close proximity. We discuss the applications of these systems and focus on the challenges ahead in facilitating their further development.
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Affiliation(s)
- Xian-Yin Dai
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, P. R. China
| | - Man Huo
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, P. R. China
| | - Yu Liu
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, P. R. China.
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3
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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.
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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
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4
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Tu F, Ye Z, Mu Y, Luo X, Liao L, Hu D, Ji S, Yang Z, Chi Z, Huo Y. Photoinduced Radical Persistent Luminescence in Semialiphatic Polyimide System with Temperature and Humidity Resistance. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023:e2301017. [PMID: 37119475 PMCID: PMC10375117 DOI: 10.1002/advs.202301017] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 04/01/2023] [Indexed: 06/19/2023]
Abstract
Organic persistent luminescence (pL) systems with photoresponsive dynamic features have valuable applications in the fields of data encryption, anticounterfeiting, and bioimaging. Photoinduced radical luminescent materials have a unique luminous mechanism with the potential to achieve dynamic pL. It is extremely challenging to obtain radical pL under ambient conditions; on account of it, it is unstable in air. Herein, a new semialiphatic polyimide-based polymer (A0) is developed, which can achieve dynamic pL through reversible conversion of radical under photoexcitation. A "joint-donor-spacer-acceptor" molecular design strategy is applied to effectively modulate the intramolecular charge-transfer and charge-transfer complex interactions, resulting in effective protection of the radical generated under photoirradiation. Meanwhile, polyimide-based polymers of A1-A4 are obtained by doping different amine-containing fluorescent dyes to modulate the dynamic afterglow color from green to red via the triplet to singlet Förster resonance energy-transfer pathway. Notably, benefiting from the structural characteristics of the polyimide-based polymer, A0-A4 have excellent processability, thermal stability, and mechanical properties and can be applied directly in extreme environments such as high temperatures and humidity.
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Affiliation(s)
- Fanlin Tu
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, 510006, China
| | - Zecong Ye
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, 510006, China
| | - Yingxiao Mu
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, 510006, China
- Key Laboratory of Polymeric Composite and Functional Materials of Ministry of Education, School of Chemistry, Sun Yat-sen University, Guangzhou, 510275, China
- State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-sen University, Guangzhou, 510275, China
| | - Xuwei Luo
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, 510006, China
| | - Liyun Liao
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, 510006, China
| | - Dehua Hu
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, 510006, China
| | - Shaomin Ji
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, 510006, China
| | - Zhiyong Yang
- Key Laboratory of Polymeric Composite and Functional Materials of Ministry of Education, School of Chemistry, Sun Yat-sen University, Guangzhou, 510275, China
| | - Zhenguo Chi
- Key Laboratory of Polymeric Composite and Functional Materials of Ministry of Education, School of Chemistry, Sun Yat-sen University, Guangzhou, 510275, China
- State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-sen University, Guangzhou, 510275, China
| | - Yanping Huo
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, 510006, China
- Analytical & Testing Center, Guangdong University of Technology, Guangzhou, 510006, China
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5
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Yang Y, Liang Y, Zheng Y, Li JA, Wu S, Zhang H, Huang T, Luo S, Liu C, Shi G, Sun F, Chi Z, Xu B. Efficient and Color-Tunable Dual-Mode Afterglow from Large-Area and Flexible Polymer-Based Transparent Films for Anti-Counterfeiting and Information Encryption. Angew Chem Int Ed Engl 2022; 61:e202201820. [PMID: 35315193 DOI: 10.1002/anie.202201820] [Citation(s) in RCA: 35] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Indexed: 12/13/2022]
Abstract
It remains a great challenge to develop polymer-based materials with efficient and color-tunable organic afterglow. Two indolocarbazole derivatives IaCzA and IbCzA have been synthesized and doped into poly(vinyl alcohol) (PVA) matrices. It is found that the resulting films can produce unique dual-mode afterglow, which is composed of persistent thermally activated delayed fluorescence and ultralong organic phosphorescence. Besides, the IbCzA-doped PVA film exhibits intense blue afterglow with Φafterglow and τafterglow up to 19.8 % and 1.81 s, respectively, representing state-of-the-art dual-mode organic afterglow performance. Moreover, our reported film has high flexibility, excellent transparency, and large-area producibility; and the afterglow color of the film can be linearly tuned by temperature. Inspired by these distinctive properties, the PVA doped with IbCzA was employed as temperature-sensitive security ink for anti-counterfeiting and information encryption.
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Affiliation(s)
- Yifan Yang
- School of Chemistry, Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education, South China Normal University, Guangzhou, 510006, China
| | - Yaohui Liang
- School of Chemistry, Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education, South China Normal University, Guangzhou, 510006, China
| | - Yitao Zheng
- School of Chemistry, Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education, South China Normal University, Guangzhou, 510006, China
| | - Jian-An Li
- School of Chemistry, Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education, South China Normal University, Guangzhou, 510006, China
| | - Shiying Wu
- School of Chemistry, Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education, South China Normal University, Guangzhou, 510006, China
| | - Huaqing Zhang
- School of Chemistry, Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education, South China Normal University, Guangzhou, 510006, China
| | - Tepeng Huang
- School of Chemistry, Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education, South China Normal University, Guangzhou, 510006, China
| | - Suilian Luo
- School of Chemistry, Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education, South China Normal University, Guangzhou, 510006, China
| | - Cong Liu
- School of Chemistry, Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education, South China Normal University, Guangzhou, 510006, China
| | - Guang Shi
- School of Chemistry, Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education, South China Normal University, Guangzhou, 510006, China
| | - Fengqiang Sun
- School of Chemistry, Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education, South China Normal University, Guangzhou, 510006, China
| | - Zhenguo Chi
- School of Chemistry, Sun Yat-sen University, Guangzhou, 510275, China
| | - Bingjia Xu
- School of Chemistry, Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education, South China Normal University, Guangzhou, 510006, China
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6
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Yang Y, Liang Y, Zheng Y, Li J, Wu S, Zhang H, Huang T, Luo S, Liu C, Shi G, Sun F, Chi Z, Xu B. Efficient and Color‐Tunable Dual‐Mode Afterglow from Large‐Area and Flexible Polymer‐Based Transparent Films for Anti‐Counterfeiting and Information Encryption. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202201820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Yifan Yang
- School of Chemistry Key Laboratory of Theoretical Chemistry of Environment Ministry of Education South China Normal University Guangzhou 510006 China
| | - Yaohui Liang
- School of Chemistry Key Laboratory of Theoretical Chemistry of Environment Ministry of Education South China Normal University Guangzhou 510006 China
| | - Yitao Zheng
- School of Chemistry Key Laboratory of Theoretical Chemistry of Environment Ministry of Education South China Normal University Guangzhou 510006 China
| | - Jian‐An Li
- School of Chemistry Key Laboratory of Theoretical Chemistry of Environment Ministry of Education South China Normal University Guangzhou 510006 China
| | - Shiying Wu
- School of Chemistry Key Laboratory of Theoretical Chemistry of Environment Ministry of Education South China Normal University Guangzhou 510006 China
| | - Huaqing Zhang
- School of Chemistry Key Laboratory of Theoretical Chemistry of Environment Ministry of Education South China Normal University Guangzhou 510006 China
| | - Tepeng Huang
- School of Chemistry Key Laboratory of Theoretical Chemistry of Environment Ministry of Education South China Normal University Guangzhou 510006 China
| | - Suilian Luo
- School of Chemistry Key Laboratory of Theoretical Chemistry of Environment Ministry of Education South China Normal University Guangzhou 510006 China
| | - Cong Liu
- School of Chemistry Key Laboratory of Theoretical Chemistry of Environment Ministry of Education South China Normal University Guangzhou 510006 China
| | - Guang Shi
- School of Chemistry Key Laboratory of Theoretical Chemistry of Environment Ministry of Education South China Normal University Guangzhou 510006 China
| | - Fengqiang Sun
- School of Chemistry Key Laboratory of Theoretical Chemistry of Environment Ministry of Education South China Normal University Guangzhou 510006 China
| | - Zhenguo Chi
- School of Chemistry Sun Yat-sen University Guangzhou 510275 China
| | - Bingjia Xu
- School of Chemistry Key Laboratory of Theoretical Chemistry of Environment Ministry of Education South China Normal University Guangzhou 510006 China
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7
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Lin F, Wang H, Cao Y, Yu R, Liang G, Huang H, Mu Y, Yang Z, Chi Z. Stepwise Energy Transfer: Near-Infrared Persistent Luminescence from Doped Polymeric Systems. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2108333. [PMID: 35137460 DOI: 10.1002/adma.202108333] [Citation(s) in RCA: 44] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 12/31/2021] [Indexed: 06/14/2023]
Abstract
Organic near infrared (NIR) persistent-luminescence systems with bright and long-lived emission are highly valuable for applications in communication, imaging, and sensors. However, realizing these materials (especially lifetime over 0.1 s) is a challenge, mainly because of non-radiative quenching of their long-lived excitons. Herein, a universal strategy of stepwise Förster resonance energy transfer (FRET) for a bright NIR system with remarkable persistent luminescence (up to 0.2 s at 810 nm) is presented, based on a new triphenylene-dye-doped polymer (triphenylene-2-ylboronic acid@poly(vinyl alcohol) (TP@PVA)) with a persistent blue phosphorescence of 3.29 s. This persistent NIR luminescence is demonstrated for application not only in NIR anti-counterfeiting but also NIR bioimaging with penetrating a piece of skin as thick as 2.0 mm. By co-doping a red dye (such as Nile red) and an NIR dye Cyanine 7 (Cy7) into this doped PVA film, the shortage of spectral overlap between TP emission and Cy7 absorbance is successfully solved, through a stepwise FRET process involving triplet to singlet (TS)-FRET from TP to the intermediate red dye and then singlet to singlet (SS)-FRET to Cy7. It is noted that the efficiency of the upper TS-FRET is enhanced significantly by the lower SS-FRET, leading to high efficiencies for the continuous FRETs.
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Affiliation(s)
- Faxu Lin
- Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, Guangdong Engineering Technology Research Center for High-performance Organic and Polymer Photoelectric Functional Films, School of Chemistry, Sun Yat-sen University, Guangzhou, 510275, P. R. China
| | - Haiyang Wang
- Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, Guangdong Engineering Technology Research Center for High-performance Organic and Polymer Photoelectric Functional Films, School of Chemistry, Sun Yat-sen University, Guangzhou, 510275, P. R. China
| | - Yifeng Cao
- Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, P. R. China
| | - Rujun Yu
- Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, P. R. China
| | - Guodong Liang
- Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, P. R. China
| | - Huahua Huang
- Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, P. R. China
| | - Yingxiao Mu
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, 510006, P. R. China
| | - Zhiyong Yang
- Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, Guangdong Engineering Technology Research Center for High-performance Organic and Polymer Photoelectric Functional Films, School of Chemistry, Sun Yat-sen University, Guangzhou, 510275, P. R. China
| | - Zhenguo Chi
- Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, Guangdong Engineering Technology Research Center for High-performance Organic and Polymer Photoelectric Functional Films, School of Chemistry, Sun Yat-sen University, Guangzhou, 510275, P. R. China
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8
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Li G, Jiang D, Shan G, Song W, Tong J, Kang D, Hou B, Mu Y, Shao K, Geng Y, Wang X, Su Z. Organic Supramolecular Zippers with Ultralong Organic Phosphorescence by a Dexter Energy Transfer Mechanism. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202113425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Guangfu Li
- Institute of Functional Material Chemistry Faculty of Chemistry Northeast Normal University Renmin Street No. 5268 Changchun 130024 P. R. China
| | - Dongjiao Jiang
- Institute of Functional Material Chemistry Faculty of Chemistry Northeast Normal University Renmin Street No. 5268 Changchun 130024 P. R. China
| | - Guogang Shan
- Institute of Functional Material Chemistry Faculty of Chemistry Northeast Normal University Renmin Street No. 5268 Changchun 130024 P. R. China
| | - Weilin Song
- Institute of Functional Material Chemistry Faculty of Chemistry Northeast Normal University Renmin Street No. 5268 Changchun 130024 P. R. China
| | - Jialin Tong
- Institute of Functional Material Chemistry Faculty of Chemistry Northeast Normal University Renmin Street No. 5268 Changchun 130024 P. R. China
| | - Di Kang
- Institute of Functional Material Chemistry Faculty of Chemistry Northeast Normal University Renmin Street No. 5268 Changchun 130024 P. R. China
| | - Baoshan Hou
- Institute of Functional Material Chemistry Faculty of Chemistry Northeast Normal University Renmin Street No. 5268 Changchun 130024 P. R. China
| | - Yingxiao Mu
- School of Chemical Engineering and Light Industry Guangdong University of Technology Guangzhou 510006 P. R. China
| | - Kuizhan Shao
- Institute of Functional Material Chemistry Faculty of Chemistry Northeast Normal University Renmin Street No. 5268 Changchun 130024 P. R. China
| | - Yun Geng
- Institute of Functional Material Chemistry Faculty of Chemistry Northeast Normal University Renmin Street No. 5268 Changchun 130024 P. R. China
| | - Xinlong Wang
- Institute of Functional Material Chemistry Faculty of Chemistry Northeast Normal University Renmin Street No. 5268 Changchun 130024 P. R. China
| | - Zhongmin Su
- Institute of Functional Material Chemistry Faculty of Chemistry Northeast Normal University Renmin Street No. 5268 Changchun 130024 P. R. China
- College of Chemistry Jilin University Changchun 130012 P. R. China
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9
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Li G, Jiang D, Shan G, Song W, Tong J, Kang D, Hou B, Mu Y, Shao K, Geng Y, Wang XL, Su Z. Organic Supramolecular Zippers with Ultralong Organic Phosphorescence by a Dexter Energy Transfer Mechanism. Angew Chem Int Ed Engl 2021; 61:e202113425. [PMID: 34962678 DOI: 10.1002/anie.202113425] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Indexed: 11/08/2022]
Abstract
Ultralong organic phosphorescence (UOP) materials glow persistently in the dark, which offers new exciting possibilities in the fields of anti-counterfeiting, photoelectric device and biological imaging. However, development of single component UOP materials remains great challenge. Herein, we firstly develop a single component organic supramolecular zipper system with lifetime up to 0.77 s. Owing to introduction of pyrazol ring into diphenylsulfone group, the 'V' shape molecules were artfully self-assembled into supramolecular zippers via π-π and CH•••π interactions, that are not only of significance in highly efficient generation of triplet excitons, but also facilitate Dexter energy transfer process within supramolecular zippers, that are responsible for the alleviating radiative and non-radiative deactivation decay of triplet excitons, to finally boost the UOP. This finding not only gives a new set of guidelines for the design of single component UOP molecules, but also reveals the UOP mechanism from a new perspective.
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Affiliation(s)
- Guangfu Li
- Northeast Normal University, Department of Chemistry, CHINA
| | - Dongjiao Jiang
- Northeast Normal University, Department of Chemistry, CHINA
| | - Guogang Shan
- Northeast Normal University, Department of Chemistry, CHINA
| | - Weilin Song
- Northeast Normal University, Department of Chemistry, CHINA
| | - Jialin Tong
- Northeast Normal University, Department of Chemistry, CHINA
| | - Di Kang
- Northeast Normal University, Department of Chemistry, CHINA
| | - Baoshan Hou
- Northeast Normal University, Department of Chemistry, CHINA
| | - Yingxiao Mu
- Guangdong University of Technology, School of Chemical Engineering and Light Industry, CHINA
| | - Kuizhan Shao
- Northeast Normal University, Department of Chemistry, CHINA
| | - Yun Geng
- Northeast Normal University, Department of Chemistry, CHINA
| | - Xin-Long Wang
- Institute of Functional Material Chemistry, Chemistry, Renmin Street, 130024, Changchun, CHINA
| | - Zhongmin Su
- Northeast Normal University, Department of Chemistry, CHINA
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10
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Yan Z, Lin X, Sun S, Ma X, Tian H. Activating Room‐Temperature Phosphorescence of Organic Luminophores via External Heavy‐Atom Effect and Rigidity of Ionic Polymer Matrix**. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202108025] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Zi‐Ang Yan
- Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center Frontiers Science Center for Materiobiology and Dynamic Chemistry Institute of Fine Chemicals School of Chemistry and Molecular Engineering East China University of Science & Technology Meilong Road 130 Shanghai 200237 China
| | - Xiaohan Lin
- Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center Frontiers Science Center for Materiobiology and Dynamic Chemistry Institute of Fine Chemicals School of Chemistry and Molecular Engineering East China University of Science & Technology Meilong Road 130 Shanghai 200237 China
| | - Siyu Sun
- Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center Frontiers Science Center for Materiobiology and Dynamic Chemistry Institute of Fine Chemicals School of Chemistry and Molecular Engineering East China University of Science & Technology Meilong Road 130 Shanghai 200237 China
| | - Xiang Ma
- Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center Frontiers Science Center for Materiobiology and Dynamic Chemistry Institute of Fine Chemicals School of Chemistry and Molecular Engineering East China University of Science & Technology Meilong Road 130 Shanghai 200237 China
| | - He Tian
- Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center Frontiers Science Center for Materiobiology and Dynamic Chemistry Institute of Fine Chemicals School of Chemistry and Molecular Engineering East China University of Science & Technology Meilong Road 130 Shanghai 200237 China
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11
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Yan ZA, Lin X, Sun S, Ma X, Tian H. Activating Room-Temperature Phosphorescence of Organic Luminophores via External Heavy-Atom Effect and Rigidity of Ionic Polymer Matrix*. Angew Chem Int Ed Engl 2021; 60:19735-19739. [PMID: 34240799 DOI: 10.1002/anie.202108025] [Citation(s) in RCA: 65] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Indexed: 12/22/2022]
Abstract
Pure organic room-temperature phosphorescence (RTP) materials have attracted wide attention for their easy preparation, low toxicity, and applications in various fields like bioimaging and anti-counterfeiting. Developing phosphorescent systems with more universality and less difficulty in synthesis has long been the pursuit of materials scientists. By employing a polymeric quaternary ammonium salt with an ionic bonding matrix and heavy atoms, commercial fluorescent dyes are directly endowed with phosphorescence emission. In a single amorphous polymer, the external heavy-atom effect generates excited triplet states and the rigid polymer matrix stabilizes them. This study put forward a new general strategy to design and develop pure organic RTP materials starting from existing library of organic dyes without complicated chemical synthesis.
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Affiliation(s)
- Zi-Ang Yan
- Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science & Technology, Meilong Road 130, Shanghai, 200237, China
| | - Xiaohan Lin
- Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science & Technology, Meilong Road 130, Shanghai, 200237, China
| | - Siyu Sun
- Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science & Technology, Meilong Road 130, Shanghai, 200237, China
| | - Xiang Ma
- Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science & Technology, Meilong Road 130, Shanghai, 200237, China
| | - He Tian
- Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science & Technology, Meilong Road 130, Shanghai, 200237, China
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12
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Ma YJ, Fang X, Xiao G, Lu B, Yan D. Triple-mode tunable long-persistent luminescence in a 3D zinc-organic hybrid. Chem Commun (Camb) 2021; 57:6684-6687. [PMID: 34132269 DOI: 10.1039/d1cc02389f] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A 3D zinc-organic hybrid [Zn3(D-Cam)3(tib)2]·2H2O (1) exhibits triple-mode dependent (including excitation wavelength, time and temperature) long-persistent luminescence. Experimental and theoretical calculations support that the long lifetime and color-tunable afterglow may be due to the dispersive electronic state distribution. Furthermore, the hybrid is also used for optical anti-counterfeiting and information encryption applications.
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Affiliation(s)
- Yu-Juan Ma
- Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China.
| | - Xiaoyu Fang
- Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China.
| | - Guowei Xiao
- Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China.
| | - Bo Lu
- Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China.
| | - Dongpeng Yan
- Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China. and Key Laboratory of Radiopharmaceuticals, Ministry of Education, Beijing Normal University, Beijing 100875, People's Republic of China and College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, 450001, China
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13
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Ren J, Wang Y, Tian Y, Liu Z, Xiao X, Yang J, Fang M, Li Z. Force-Induced Turn-On Persistent Room-Temperature Phosphorescence in Purely Organic Luminogen. Angew Chem Int Ed Engl 2021; 60:12335-12340. [PMID: 33719198 DOI: 10.1002/anie.202101994] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 03/09/2021] [Indexed: 12/11/2022]
Abstract
Research of purely organic room-temperature phosphorescence (RTP) materials has been a hot topic, especially for those with stimulus response character. Herein, an abnormal stimulus-responsive RTP effect is reported, in which, purely organic luminogen of Czs-ph-3F shows turn-on persistent phosphorescence under grinding. Careful analyses of experimental results, coupled with the theoretical calculations, show that the transition of molecular conformation from quasi-axial to quasi-equatorial of the phenothiazine group should be mainly responsible for this exciting result. Furthermore, the applications of stylus printing and thermal printing are both successfully realized, based on the unique RTP effect of Czs-ph-3F.
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Affiliation(s)
- Jia Ren
- Institute of Molecular Aggregation Science, Tianjin University, Tianjin, 300072, China
| | - Yunsheng Wang
- Institute of Molecular Aggregation Science, Tianjin University, Tianjin, 300072, China
| | - Yu Tian
- Institute of Molecular Aggregation Science, Tianjin University, Tianjin, 300072, China
| | - Zhenjiang Liu
- Institute of Molecular Aggregation Science, Tianjin University, Tianjin, 300072, China
| | - Xiangheng Xiao
- School of Physics and Technology, Wuhan University, Wuhan, Hubei, 430072, China
| | - Jie Yang
- Institute of Molecular Aggregation Science, Tianjin University, Tianjin, 300072, China
| | - Manman Fang
- Institute of Molecular Aggregation Science, Tianjin University, Tianjin, 300072, China
| | - Zhen Li
- Institute of Molecular Aggregation Science, Tianjin University, Tianjin, 300072, China.,Department of Chemistry, Wuhan University, Wuhan, Hubei, 430072, China.,Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou, Fujian, 350207, China.,Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, Tianjin University, Tianjin, 300072, China
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14
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Liang C, Li M, Chen Y. Amphiphilic Diazapyrenes with Multiple Stimuli-Responsive Properties. ACS APPLIED MATERIALS & INTERFACES 2021; 13:20698-20707. [PMID: 33881818 DOI: 10.1021/acsami.1c03318] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
A series of amphiphilic diazapyrenes exhibiting switchable fluorescence under the stimulus of mechanical force or water vapor are reported for the first time. Comprehensive studies of their photophysical properties in different states based on UV-Vis absorption, FL emission, FT-IR spectroscopy, and XRD analysis have revealed a stimuli-induced excimer-based sensing mechanism. The relationship between molecular structures and optical responsive properties of these diazapyrene derivatives is illustrated. Moreover, the unique fluorescent, stimuli-responsive behaviors of these diazapyrene compounds in the solid state are used to fabricate sensory films for successively and orthogonally sensing mechanical force and water vapor. In contrast to the well-established knowledge on the transformation between the pyrene monomer and excimer, our study offers valuable information about the unknown diazapyrene excimers and demonstrates their potential applications in biocompatible force sensors, data storage, and humidity sensors.
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Affiliation(s)
- Chunchun Liang
- Department of Chemistry, Institute of Molecular Plus, Tianjin University, Tianjin 300354, P. R. China
| | - Mengwei Li
- Department of Chemistry, Institute of Molecular Plus, Tianjin University, Tianjin 300354, P. R. China
| | - Yulan Chen
- Department of Chemistry, Institute of Molecular Plus, Tianjin University, Tianjin 300354, P. R. China
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15
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Ren J, Wang Y, Tian Y, Liu Z, Xiao X, Yang J, Fang M, Li Z. Force‐Induced Turn‐On Persistent Room‐Temperature Phosphorescence in Purely Organic Luminogen. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202101994] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Jia Ren
- Institute of Molecular Aggregation Science Tianjin University Tianjin 300072 China
| | - Yunsheng Wang
- Institute of Molecular Aggregation Science Tianjin University Tianjin 300072 China
| | - Yu Tian
- Institute of Molecular Aggregation Science Tianjin University Tianjin 300072 China
| | - Zhenjiang Liu
- Institute of Molecular Aggregation Science Tianjin University Tianjin 300072 China
| | - Xiangheng Xiao
- School of Physics and Technology Wuhan University Wuhan Hubei 430072 China
| | - Jie Yang
- Institute of Molecular Aggregation Science Tianjin University Tianjin 300072 China
| | - Manman Fang
- Institute of Molecular Aggregation Science Tianjin University Tianjin 300072 China
| | - Zhen Li
- Institute of Molecular Aggregation Science Tianjin University Tianjin 300072 China
- Department of Chemistry Wuhan University Wuhan Hubei 430072 China
- Joint School of National University of Singapore and Tianjin University International Campus of Tianjin University Binhai New City Fuzhou Fujian 350207 China
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences Department of Chemistry Tianjin University Tianjin 300072 China
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16
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Persistent room temperature blue phosphorescence from racemic crystals of 1,1-diphenylmethanol derivatives. J Photochem Photobiol A Chem 2021. [DOI: 10.1016/j.jphotochem.2020.113043] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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17
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Dang Q, Jiang Y, Wang J, Wang J, Zhang Q, Zhang M, Luo S, Xie Y, Pu K, Li Q, Li Z. Room-Temperature Phosphorescence Resonance Energy Transfer for Construction of Near-Infrared Afterglow Imaging Agents. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e2006752. [PMID: 33175432 DOI: 10.1002/adma.202006752] [Citation(s) in RCA: 146] [Impact Index Per Article: 36.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 10/22/2020] [Indexed: 06/11/2023]
Abstract
Afterglow imaging that detects photons after cessation of optical excitation avoids tissue autofluorescence and thus possesses higher sensitivity than traditional fluorescence imaging. Purely organic molecules with room-temperature phosphorescence (RTP) have emerged as a new library of benign afterglow agents. However, most RTP luminogens only emit visible light with shallow tissue penetration, constraining their in vivo applications. This study presents an organic RTP nanoprobe (mTPA-N) with emission in the NIR range for in vivo afterglow imaging. Such a probe is composed of RTP molecule (mTPA) as the phosphorescent generator and an NIR-fluorescent dye as the energy acceptor to enable room-temperature phosphorescence resonance energy transfer (RT-PRET), ultimately resulting in redshifted phosphorescent emission at 780 nm. Because of the elimination of background noise and redshifted afterglow luminescence in a biologically transparent window, mTPA-N permits imaging of lymph nodes in living mice with a high signal-to-noise ratio. This study thus opens up a universal approach to develop organic RTP luminogens into NIR afterglow imaging agents via construction of RT-PRET.
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Affiliation(s)
- Qianxi Dang
- Sauvage Center for Molecular Sciences, Department of Chemistry, Wuhan University, Wuhan, 430072, China
| | - Yuyan Jiang
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore, 637457, Singapore
| | - Jinfeng Wang
- Sauvage Center for Molecular Sciences, Department of Chemistry, Wuhan University, Wuhan, 430072, China
| | - Jiaqiang Wang
- Institute of Molecular Aggregation Science, Tianjin University, Tianjin, 300072, China
| | - Qunhua Zhang
- Sauvage Center for Molecular Sciences, Department of Chemistry, Wuhan University, Wuhan, 430072, China
| | - Mingkang Zhang
- Sauvage Center for Molecular Sciences, Department of Chemistry, Wuhan University, Wuhan, 430072, China
| | - Simeng Luo
- Sauvage Center for Molecular Sciences, Department of Chemistry, Wuhan University, Wuhan, 430072, China
| | - Yujun Xie
- Institute of Molecular Aggregation Science, Tianjin University, Tianjin, 300072, China
| | - Kanyi Pu
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore, 637457, Singapore
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
| | - Qianqian Li
- Sauvage Center for Molecular Sciences, Department of Chemistry, Wuhan University, Wuhan, 430072, China
| | - Zhen Li
- Sauvage Center for Molecular Sciences, Department of Chemistry, Wuhan University, Wuhan, 430072, China
- Institute of Molecular Aggregation Science, Tianjin University, Tianjin, 300072, China
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18
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Yang Z, Zhan Y, Qiu Z, Zeng J, Guo J, Hu S, Zhao Z, Li X, Ji S, Huo Y, Su SJ. Stimuli-Responsive Aggregation-Induced Delayed Fluorescence Emitters Featuring the Asymmetric D-A Structure with a Novel Diarylketone Acceptor Toward Efficient OLEDs with Negligible Efficiency Roll-Off. ACS APPLIED MATERIALS & INTERFACES 2020; 12:29528-29539. [PMID: 32508095 DOI: 10.1021/acsami.0c07612] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Multifunctional luminescent materials with aggregation-induced delayed fluorescence (AIDF) are capable of suppressing concentration-caused emission quenching and exciton annihilation when used as organic light-emitting diode (OLED) emitters. In this contribution, three stimuli-responsive AIDF luminogens, pipd-BZ-PXZ, pipd-BZ-PTZ, and pipd-BZ-DMAC, featuring a D-A asymmetric framework based on a fused N-heterocycle diarylketone acceptor (imid-azo[1,2-a]pyridin-2-yl(phenyl)methanone pipd) are designed and synthesized. Interestingly, pipd-BZ-PTZ forms two different kinds of crystals (G-crystal and O-crystal) with distinct intermolecular interactions between pipd moieties. The G-crystal with a looser packing mode presents significant morphology-dependent stimuli-responsive behavior with a shifted emission wavelength of 56 nm. Generated by a strong intramolecular charge transfer effect, pipd-BZ-PXZ and pipd-BZ-PTZ exhibit orange to red emission in solution and neat films. Both nondoped and doped devices are fabricated for comparison. Nondoped devices present moderate performance with external quantum efficiencies and current efficiency that reach 7.04% and 19.86 cd A-1, respectively, and the corresponding efficiency roll off at 1000 cd m-2 is as small as 2.3%, which is among the best records of AIDF-OLEDs with an emission wavelength over 570 nm. Doped devices show better performance with corresponding efficiencies of up to 55.41 cd A-1 and 15.77%.
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Affiliation(s)
- Zhiwen Yang
- School of Chemical Engineering & Light Industry, Guangdong University of Technology, 510006 Guangzhou, China
| | - Yingying Zhan
- School of Chemical Engineering & Light Industry, Guangdong University of Technology, 510006 Guangzhou, China
| | - Zhipeng Qiu
- School of Chemical Engineering & Light Industry, Guangdong University of Technology, 510006 Guangzhou, China
| | - Jiajie Zeng
- State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, 510640 Guangzhou, China
| | - Jingjing Guo
- State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, 510640 Guangzhou, China
| | - Sheng Hu
- School of Chemical Engineering & Light Industry, Guangdong University of Technology, 510006 Guangzhou, China
| | - Zujin Zhao
- State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, 510640 Guangzhou, China
| | - Xianwei Li
- School of Chemical Engineering & Light Industry, Guangdong University of Technology, 510006 Guangzhou, China
| | - Shaomin Ji
- School of Chemical Engineering & Light Industry, Guangdong University of Technology, 510006 Guangzhou, China
| | - Yanping Huo
- School of Chemical Engineering & Light Industry, Guangdong University of Technology, 510006 Guangzhou, China
- Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates, South China University of Technology, 510640 Guangzhou, China
| | - Shi-Jian Su
- State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, 510640 Guangzhou, China
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19
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Kuila S, George SJ. Phosphorescence Energy Transfer: Ambient Afterglow Fluorescence from Water‐Processable and Purely Organic Dyes via Delayed Sensitization. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202002555] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Suman Kuila
- Supramolecular Chemistry LaboratoryNew Chemistry Unit and School of Advanced MaterialsJawaharlal Nehru Centre for Advanced Scientific Research (JNCASR) Jakkur P.O. Bangalore 560064 India
| | - Subi J. George
- Supramolecular Chemistry LaboratoryNew Chemistry Unit and School of Advanced MaterialsJawaharlal Nehru Centre for Advanced Scientific Research (JNCASR) Jakkur P.O. Bangalore 560064 India
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20
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Kuila S, George SJ. Phosphorescence Energy Transfer: Ambient Afterglow Fluorescence from Water-Processable and Purely Organic Dyes via Delayed Sensitization. Angew Chem Int Ed Engl 2020; 59:9393-9397. [PMID: 32142188 DOI: 10.1002/anie.202002555] [Citation(s) in RCA: 132] [Impact Index Per Article: 33.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Indexed: 11/08/2022]
Abstract
Ambient afterglow luminescence from metal-free organic chromophores would provide a promising alternative to the well-explored inorganic phosphors. However, the realization of air-stable and solution-processable organic afterglow systems with long-lived triplet or singlet states remains a formidable challenge. In the present study, a delayed sensitization of the singlet state of organic dyes via phosphorescence energy transfer from organic phosphors is proposed as an alternative strategy to realize "afterglow fluorescence". This concept is demonstrated with a long-lived phosphor as the energy donor and commercially available fluorescent dyes as the energy acceptor. Triplet-to-singlet Förster-resonance energy-transfer (TS-FRET) between donor and acceptor chromophores, which are co-organized in an amorphous polymer matrix, results in tuneable yellow and red afterglow from the fluorescent acceptors. Moreover, these afterglow fluorescent hybrids are highly solution-processable and show excellent air-stability with good quantum yields.
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Affiliation(s)
- Suman Kuila
- Supramolecular Chemistry Laboratory, New Chemistry Unit and School of Advanced Materials, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur P.O., Bangalore, 560064, India
| | - Subi J George
- Supramolecular Chemistry Laboratory, New Chemistry Unit and School of Advanced Materials, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur P.O., Bangalore, 560064, India
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