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A Versatile Strategy for Multi‐Stimuli‐Responsive Fluorescent Material Based on Cross‐Linking‐Induced Emission: Applications in Encryption. Angew Chem Int Ed Engl 2022; 61:e202208516. [DOI: 10.1002/anie.202208516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Indexed: 11/07/2022]
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Jiang Y, Ma J, Ran Z, Zhong H, Zhang D, Hadjichristidis N. Versatile Strategy for Multi‐Stimuli‐Responsive Fluorescent Material Based on Cross‐Linking‐Induced Emission. Application in Encryption. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202208516] [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)
- Yu Jiang
- South-Central University for Nationalities: South-Central Minzu University School of chemistry and materials science Minzu Road Wuhan CHINA
| | - Jiahui Ma
- South-Central Minzu University School of chemistry and materials science CHINA
| | - Ziyu Ran
- South-Central Minzu University School of chemistry and materials science CHINA
| | - Huiqing Zhong
- South-Central Minzu University School of chemistry and materials science CHINA
| | - Daohong Zhang
- South-Central Minzu University School of chemistry and materials science CHINA
| | - Nikos Hadjichristidis
- KAUST: King Abdullah University of Science and Technology KAUST Catalysis Center SAUDI ARABIA
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Hyaluronic Acid Methacrylate Hydrogel-Modified Electrochemical Device for Adsorptive Removal of Lead(II). BIOSENSORS 2022; 12:bios12090714. [PMID: 36140099 PMCID: PMC9496323 DOI: 10.3390/bios12090714] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 08/25/2022] [Accepted: 08/31/2022] [Indexed: 11/22/2022]
Abstract
This paper presents the development of a compact, three-electrode electrochemical device functionalized by a biocompatible layer of hyaluronic acid methacrylate (HAMA) hydrogel for the adsorptive removal of detrimental lead (Pb(II)) ions in aqueous solutions. An adsorption mechanism pertaining to the observed analytical performance of the device is proposed and further experimentally corroborated. It is demonstrated that both the molecular interactions originating from the HAMA hydrogel and electrochemical accumulation originating from the electrode beneath contribute to the adsorption capability of the device. Infrared spectral analysis reveals that the molecular interaction is mainly induced by the amide functional group of the HAMA hydrogel, which is capable of forming the Pb(II)–amide complex. In addition, inductively coupled plasma mass spectrometric (ICP-MS) analysis indicates that the electrochemical accumulation is particularly valuable in facilitating the adsorption rate of the device by maintaining a high ion-concentration gradient between the solution and the hydrogel layer. ICP-MS measurements show that 94.08% of Pb(II) ions present in the test solution can be adsorbed by the device within 30 min. The HAMA hydrogel-modified electrochemical devices exhibit reproducible performance in the aspect of Pb(II) removal from tap water, with a relative standard deviation (RSD) of 1.28% (for n = 8). The experimental results suggest that the HAMA hydrogel-modified electrochemical device can potentially be used for the rapid, on-field remediation of Pb(II) contamination.
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Sánchez-Ruiz A, Sousa-Herves A, Tolosa J, Navarro A, García-Martínez JC. Aggregation-Induced Emission Properties in Fully π-Conjugated Polymers, Dendrimers, and Oligomers. Polymers (Basel) 2021; 13:E213. [PMID: 33435293 PMCID: PMC7826689 DOI: 10.3390/polym13020213] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 01/02/2021] [Accepted: 01/05/2021] [Indexed: 12/13/2022] Open
Abstract
Aggregation-Induced Emission (AIE) in organic molecules has recently attracted the attention of the scientific community because of their potential applications in different fields. Compared to small molecules, little attention has been paid to polymers and oligomers that exhibit AIE, despite having excellent properties such as high emission efficiency in aggregate and solid states, signal amplification effect, good processability and the availability of multiple functionalization sites. In addition to these features, if the molecular structure is fully conjugated, intramolecular electronic interactions between the composing chromophores may appear, thus giving rise to a wealth of new photophysical properties. In this review, we focus on selected fully conjugated oligomers, dendrimers and polymers, and briefly summarize their synthetic routes, fluorescence properties and potential applications. An exhaustive comparison between spectroscopic results in solution and aggregates or in solid state has been collected in almost all examples, and an opinion on the future direction of the field is briefly stated.
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Affiliation(s)
- Antonio Sánchez-Ruiz
- Facultad de Farmacia, Departamento de Química Inorgánica Orgánica y Bioquímica, Universidad de Castilla-La Mancha, C/José María Sánchez Ibáñez s/n, 02008 Albacete, Spain; (A.S.-R.); (A.S.-H.); (J.T.)
- Regional Center for Biomedical Research (CRIB), Universidad de Castilla-La Mancha, C/Almansa 13, 02008 Albacete, Spain
| | - Ana Sousa-Herves
- Facultad de Farmacia, Departamento de Química Inorgánica Orgánica y Bioquímica, Universidad de Castilla-La Mancha, C/José María Sánchez Ibáñez s/n, 02008 Albacete, Spain; (A.S.-R.); (A.S.-H.); (J.T.)
- Regional Center for Biomedical Research (CRIB), Universidad de Castilla-La Mancha, C/Almansa 13, 02008 Albacete, Spain
| | - Juan Tolosa
- Facultad de Farmacia, Departamento de Química Inorgánica Orgánica y Bioquímica, Universidad de Castilla-La Mancha, C/José María Sánchez Ibáñez s/n, 02008 Albacete, Spain; (A.S.-R.); (A.S.-H.); (J.T.)
- Regional Center for Biomedical Research (CRIB), Universidad de Castilla-La Mancha, C/Almansa 13, 02008 Albacete, Spain
| | - Amparo Navarro
- Department of Physical and Analytical Chemistry, Faculty of Experimental Sciences, Campus Las Lagunillas, Universidad de Jaén, 23071 Jaén, Spain;
| | - Joaquín C. García-Martínez
- Facultad de Farmacia, Departamento de Química Inorgánica Orgánica y Bioquímica, Universidad de Castilla-La Mancha, C/José María Sánchez Ibáñez s/n, 02008 Albacete, Spain; (A.S.-R.); (A.S.-H.); (J.T.)
- Regional Center for Biomedical Research (CRIB), Universidad de Castilla-La Mancha, C/Almansa 13, 02008 Albacete, Spain
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Jiang Y, Hadjichristidis N. Diels-Alder Polymer Networks with Temperature-Reversible Cross-Linking-Induced Emission. Angew Chem Int Ed Engl 2021; 60:331-337. [PMID: 33031601 PMCID: PMC7839674 DOI: 10.1002/anie.202013183] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Indexed: 01/31/2023]
Abstract
A novel synthetic strategy gives reversible cross-linked polymeric materials with tunable fluorescence properties. Dimaleimide-substituted tetraphenylethene (TPE-2MI), which is non-emissive owing to the photo-induced electron transfer (PET) between maleimide (MI) and tetraphenylethene (TPE) groups, was used to cross-link random copolymers of methyl (MM), decyl (DM) or lauryl (LM) methacrylate with furfuryl methacrylate (FM). The mixture of copolymer and TPE-2MI in DMF showed reversible fluorescence with "on/off" behavior depending on the Diels-Alder (DA)/retro-DA process, which is easily adjusted by temperature. At high temperatures, the retro-DA reaction is dominant, and the fluorescence is quenched by the photo-induced electron transfer (PET) mechanism. In contrast, at low temperatures, the emission recovers as the DA reaction takes over. A transparent PMFM/TPE-2MI polymer film was prepared which shows an accurate response to the external temperature and exhibited tunable fluorescent "turn on/off" behavior. These results suggest the possible application in areas including information security and transmission. An example of invisible/visible writing is given.
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Affiliation(s)
- Yu Jiang
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials ScienceHubei R&D Center of Hyperbranched Polymers Synthesis and ApplicationsSouth-Central University for NationalitiesWuhan430074China
| | - Nikos Hadjichristidis
- Polymer Synthesis LaboratoryKAUST Catalysis CenterPhysical Sciences and Engineering DivisionKing Abdullah University of Science and Technology (KAUST)Thuwal23955Saudi Arabia
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Jiang Y, Hadjichristidis N. Diels–Alder Polymer Networks with Temperature‐Reversible Cross‐Linking‐Induced Emission. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202013183] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Yu Jiang
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science Hubei R&D Center of Hyperbranched Polymers Synthesis and Applications South-Central University for Nationalities Wuhan 430074 China
| | - Nikos Hadjichristidis
- Polymer Synthesis Laboratory KAUST Catalysis Center Physical Sciences and Engineering Division King Abdullah University of Science and Technology (KAUST) Thuwal 23955 Saudi Arabia
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Nabeel F, Rasheed T, Mahmood MF, Khan SUD. Hyperbranched copolymer based photoluminescent vesicular probe conjugated with tetraphenylethene: Synthesis, aggregation-induced emission and explosive detection. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113034] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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Mitra M, Mahapatra M, Dutta A, Deb M, Dutta S, Chattopadhyay PK, Roy S, Banerjee S, Sil PC, Singha NR. Fluorescent Guar Gum-g-Terpolymer via In Situ Acrylamido-Acid Fluorophore-Monomer in Cell Imaging, Pb(II) Sensor, and Security Ink. ACS APPLIED BIO MATERIALS 2020; 3:1995-2006. [PMID: 35025321 DOI: 10.1021/acsabm.9b01146] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Madhushree Mitra
- Department of Leather Technology, Government College of Engineering and Leather Technology (Post Graduate), Maulana Abul Kalam Azad University of Technology, Salt Lake City, Kolkata 700106, West Bengal, India
- Department of Chemical Engineering, University of Calcutta, 92, A.P.C. Road, Kolkata 700009, West Bengal, India
| | - Manas Mahapatra
- Advanced Polymer Laboratory, Department of Polymer Science and Technology, Government College of Engineering and Leather Technology (Post Graduate), Maulana Abul Kalam Azad University of Technology, Salt Lake City, Kolkata 700106, West Bengal, India
| | - Arnab Dutta
- Advanced Polymer Laboratory, Department of Polymer Science and Technology, Government College of Engineering and Leather Technology (Post Graduate), Maulana Abul Kalam Azad University of Technology, Salt Lake City, Kolkata 700106, West Bengal, India
| | - Mousumi Deb
- Advanced Polymer Laboratory, Department of Polymer Science and Technology, Government College of Engineering and Leather Technology (Post Graduate), Maulana Abul Kalam Azad University of Technology, Salt Lake City, Kolkata 700106, West Bengal, India
| | - Sayanta Dutta
- Division of Molecular Medicine, Bose Institute, P-1/12, CIT Scheme VII M, Kolkata 700054, West Bengal, India
| | - Pijush Kanti Chattopadhyay
- Department of Leather Technology, Government College of Engineering and Leather Technology (Post Graduate), Maulana Abul Kalam Azad University of Technology, Salt Lake City, Kolkata 700106, West Bengal, India
| | - Subhasis Roy
- Department of Chemical Engineering, University of Calcutta, 92, A.P.C. Road, Kolkata 700009, West Bengal, India
| | - Snehasis Banerjee
- Department of Chemistry, Government College of Engineering and Leather Technology (Post Graduate), Maulana Abul Kalam Azad University of Technology, Salt Lake City, Kolkata 700106, West Bengal,India
| | - Parames C. Sil
- Division of Molecular Medicine, Bose Institute, P-1/12, CIT Scheme VII M, Kolkata 700054, West Bengal, India
| | - Nayan Ranjan Singha
- Advanced Polymer Laboratory, Department of Polymer Science and Technology, Government College of Engineering and Leather Technology (Post Graduate), Maulana Abul Kalam Azad University of Technology, Salt Lake City, Kolkata 700106, West Bengal, India
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Xu P, Bao Z, Yu C, Qiu Q, Wei M, Xi W, Qian Z, Feng H. A water-soluble molecular probe with aggregation-induced emission for discriminative detection of Al 3+ and Pb 2+ and imaging in seedling root of Arabidopsis. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 223:117335. [PMID: 31288169 DOI: 10.1016/j.saa.2019.117335] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Revised: 06/18/2019] [Accepted: 06/30/2019] [Indexed: 06/09/2023]
Abstract
Luminogens with aggregation-induced emission (AIE) have been used to develop a new type of molecular probes based on analyte-triggered aggregation, but it still remains a challenge to design water-soluble AIE-active probe for specific detection of metal ions. Herein, we designed and synthesized a water-soluble molecular probe with AIE property for discriminative detection of aluminum ion and lead ion. Four carboxylic acid groups were incorporated into a tetraphenylethylene unit to enhance the coordination affinity and increase water-solubility in aqueous solution. The designed probe can be selectively lighted up by aluminum ion and lead ion via coordination-triggered AIE process. Discrimination of aluminum ion and lead ions based on the probe can be achieved in quantitative manner with the assistance of suitable masking reagents. This probe was further used to image aluminum ions in living cells of seedling roots of Arabidopsis, and the results showed that this probe is capable of imaging aluminum ions in living cells avoiding the interference of lead ions, and is suited for long-term imaging due to its excellent photostability. This work expands the application scope of AIE-active probes in discriminative detection of metal ions, and provides a design direction for water-soluble AIE probes to avoid the false signals from self-precipitation under physiological conditions.
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Affiliation(s)
- Pengfei Xu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, People's Republic of China
| | - Zhiyi Bao
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, People's Republic of China
| | - Chenyi Yu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, People's Republic of China
| | - Qianqian Qiu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, People's Republic of China
| | - Mengru Wei
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, People's Republic of China
| | - Wenbin Xi
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, People's Republic of China
| | - Zhaosheng Qian
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, People's Republic of China
| | - Hui Feng
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, People's Republic of China.
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11
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Xu L, Zhou T, Liao M, Hu R, Tang BZ. Multicomponent Polymerizations of Alkynes, Sulfonyl Azides, and 2-Hydroxybenzonitrile/2-Aminobenzonitrile toward Multifunctional Iminocoumarin/Quinoline-Containing Poly( N-sulfonylimine)s. ACS Macro Lett 2019; 8:101-106. [PMID: 35619415 DOI: 10.1021/acsmacrolett.8b00884] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Multicomponent polymerizations (MCPs) provide a powerful synthetic tool for the construction of polymers with complex structures and multifunctionalities, owing to their great structural diversity, mild condition, high efficiency, simple procedure, and environmental benefit. They possess significant advantages in synthesizing heteroatom-rich or heterocycle-containing functional polymers through directly constructing fused heterocycles from the MCP. In this work, the MCPs of diynes, disulfonyl azides, and 2-hydroxybenzonitrile or 2-aminobenzonitrile were reported under the catalysis of CuCl and Et3N, generating iminocoumarin/quinoline-containing poly(N-sulfonylimine)s with high molecular weights (up to 37700 g/mol) and high yields (up to 96%). The MCPs enjoy a wide monomer scope and high atom economy, releasing N2 as the only byproduct. The fluorescent poly(N-sulfonylimine) can be utilized for sensitive and selective detection of Ru3+, which also possesses antibacterial properties. The efficient MCPs could produce polymers with unique structures and functionalities, thereby accelerating the development of polymer materials.
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Affiliation(s)
- Liguo Xu
- State Key Laboratory of Luminescent Materials and Devices, Center for Aggregation-Induced Emission, South China University of Technology, Guangzhou 510640, China
| | - Taotao Zhou
- State Key Laboratory of Luminescent Materials and Devices, Center for Aggregation-Induced Emission, South China University of Technology, Guangzhou 510640, China
| | - Min Liao
- State Key Laboratory of Luminescent Materials and Devices, Center for Aggregation-Induced Emission, South China University of Technology, Guangzhou 510640, China
| | - Rongrong Hu
- State Key Laboratory of Luminescent Materials and Devices, Center for Aggregation-Induced Emission, South China University of Technology, Guangzhou 510640, China
| | - Ben Zhong Tang
- State Key Laboratory of Luminescent Materials and Devices, Center for Aggregation-Induced Emission, South China University of Technology, Guangzhou 510640, China
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Centre for Tissue Restoration and Reconstruction, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
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Affiliation(s)
- Teresa L. Mako
- Department of Chemistry, University of Rhode Island, 140 Flagg Road, Kingston, Rhode Island 02881, United States
| | - Joan M. Racicot
- Department of Chemistry, University of Rhode Island, 140 Flagg Road, Kingston, Rhode Island 02881, United States
| | - Mindy Levine
- Department of Chemistry, University of Rhode Island, 140 Flagg Road, Kingston, Rhode Island 02881, United States
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13
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Adeel M, Xu S, Zhao B, Li L, Zheng S. Photoluminescent polymeric micelles from poly(ethylene oxide)-block-poly(((4-vinylphenyl)ethene-1,1,2-triyl)tribenzene) diblock copolymers. NEW J CHEM 2018. [DOI: 10.1039/c8nj00366a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report the synthesis of poly(ethylene oxide)-block-poly(((4-vinylphenyl)ethene-1,1,2-triyl)tribenzene) diblock copolymers via RAFT polymerization. The diblock copolymers were capable of self-assembling into photoluminescent micelles in aqueous media.
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Affiliation(s)
- Muhammad Adeel
- Department of Polymer Science and Engineering and the State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University
- Shanghai 200240
- P. R. China
| | - Sen Xu
- Department of Polymer Science and Engineering and the State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University
- Shanghai 200240
- P. R. China
| | - Bingjie Zhao
- Department of Polymer Science and Engineering and the State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University
- Shanghai 200240
- P. R. China
| | - Lei Li
- Department of Polymer Science and Engineering and the State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University
- Shanghai 200240
- P. R. China
| | - Sixun Zheng
- Department of Polymer Science and Engineering and the State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University
- Shanghai 200240
- P. R. China
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Morishima K, Ishiwari F, Matsumura S, Fukushima T, Shibayama M. Mesoscopic Structural Aspects of Ca2+-Triggered Polymer Chain Folding of a Tetraphenylethene-Appended Poly(acrylic acid) in Relation to Its Aggregation-Induced Emission Behavior. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b00883] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Ken Morishima
- Institute
for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwanoha,
Kashiwa, Chiba 277-8581, Japan
| | - Fumitaka Ishiwari
- Laboratory
for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
| | - Satoko Matsumura
- Laboratory
for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
| | - Takanori Fukushima
- Laboratory
for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
| | - Mitsuhiro Shibayama
- Institute
for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwanoha,
Kashiwa, Chiba 277-8581, Japan
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15
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Wang K, Yang J, Gong C, Lu H. Polyurethanes with aggregation-enhanced emission characteristics: preparation and properties. Faraday Discuss 2017; 196:43-54. [DOI: 10.1039/c6fd00175k] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An amino-terminated poly(propylene glycol)-modified tetraaryl-buta-1,3-diene derivative (TABDAA) was introduced to synthesize polyurethanes with different ratios of soft/hard segments. A mixture of TABDAA and poly(tetrahydrofuran) 1000 as the soft segments was reacted with 4,4-diphenylmethane diisocyanate and 1,4-butanediol as the hard segments in molar ratios of 1 : 2 : 1, 2 : 3 : 1, and 3 : 4 : 1 to give the desired polyurethanes named TMPU-211, TMPU-321 and TMPU-431, respectively. The three polyurethanes exhibited different aggregation-enhanced emission (AEE) behaviors because of their different soft/hard segment ratios. The polyurethanes with a higher soft segment content tended to form bigger particles in a DMF/water mixture solution, thus causing a sharper increase in their fluorescence intensity. In addition, the polyurethane films exhibited different fluorescence intensities after different heat treatments. After a quenching treatment of the soft segments in the polyurethane films, the fluorescence intensity dropped greatly. When these quenched polyurethane films were thermally annealed at 60 °C for 24 hours, their fluorescence intensity exceeded the initial intensity of the as-prepared films. Differential scanning calorimetry results showed that the polyurethane films in the quenched condition did not present the endothermal melting peak of the soft segments, and the melting peaks appeared again after thermal annealing. AFM experiments showed that an ordered arrangement was achieved after the heat treatment of these AEE polyurethane films. These results demonstrated that the polymer structure had a significant effect on the AEE properties of the polyurethane films, and more importantly, it is of great significance in improving the fluorescence emission of the AEE polymers and also for their potential application in fluorescent probes, stimuli-responsive materials, PLED devices and so on.
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Affiliation(s)
- Kun Wang
- Key Laboratory of Aerospace Advanced Materials and Performance
- Ministry of Education
- School of Materials Science and Engineering
- Beihang University
- Beijing 100083
| | - Jiping Yang
- Key Laboratory of Aerospace Advanced Materials and Performance
- Ministry of Education
- School of Materials Science and Engineering
- Beihang University
- Beijing 100083
| | - Chen Gong
- Key Laboratory of Aerospace Advanced Materials and Performance
- Ministry of Education
- School of Materials Science and Engineering
- Beihang University
- Beijing 100083
| | - Hao Lu
- Key Laboratory of Aerospace Advanced Materials and Performance
- Ministry of Education
- School of Materials Science and Engineering
- Beihang University
- Beijing 100083
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Jiang J, Zhang C, Lin W, Liu Y, Liu S, Xu Y, Zhao Q, Huang W. Long-Lived Phosphorescent Iridium(III) Complexes Conjugated with Cationic Polyfluorenes for Heparin Sensing and Cellular Imaging. Macromol Rapid Commun 2015; 36:640-6. [DOI: 10.1002/marc.201400654] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2014] [Revised: 12/07/2014] [Indexed: 12/13/2022]
Affiliation(s)
- Jiayang Jiang
- Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials (IAM); Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM); Nanjing University of Posts & Telecommunications (NUPT); Nanjing 210023 P.R. China
| | - Chuanqi Zhang
- Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials (IAM); Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM); Nanjing University of Posts & Telecommunications (NUPT); Nanjing 210023 P.R. China
| | - Wenpeng Lin
- Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials (IAM); Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM); Nanjing University of Posts & Telecommunications (NUPT); Nanjing 210023 P.R. China
| | - Yahong Liu
- Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials (IAM); Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM); Nanjing University of Posts & Telecommunications (NUPT); Nanjing 210023 P.R. China
| | - Shujuan Liu
- Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials (IAM); Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM); Nanjing University of Posts & Telecommunications (NUPT); Nanjing 210023 P.R. China
| | - Yunjian Xu
- Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials (IAM); Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM); Nanjing University of Posts & Telecommunications (NUPT); Nanjing 210023 P.R. China
| | - Qiang Zhao
- Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials (IAM); Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM); Nanjing University of Posts & Telecommunications (NUPT); Nanjing 210023 P.R. China
| | - Wei Huang
- Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials (IAM); Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM); Nanjing University of Posts & Telecommunications (NUPT); Nanjing 210023 P.R. China
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM); Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM); Nanjing Tech University (NanjingTech); Nanjing 211816 P.R. China
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