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Wang Y, Chen G, Liu R, Fang X, Li F, Wu L, Wu Y. Synergistically enhanced photothermal transition of a polyoxometalate/peptide assembly improved the antibiofilm and antibacterial activities. SOFT MATTER 2022; 18:2951-2958. [PMID: 35348178 DOI: 10.1039/d2sm00092j] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
We successfully developed an antimicrobial assembly (Mo154/TK-14) using molybdenum-polyoxometalate and a positively charged peptide of TK-14. It was characterized and assayed using zeta-potential, dynamic light scattering (DLS), and TEM measurements. The Mo154/TK-14 assembly showed an enhanced 808 nm absorption and, therefore, improved the photothermal conversion efficiency of Mo154 (30.3%) to 38.6%. Consequently, in comparison to 5 μM Mo154 without irradiation, both the biofilm formation and bacterial viability of S. aureus were 24.6% and 20.2%, respectively, for the Mo154/TK-14 assembly; the biofilm formation and bacterial viability were further decreased to 7.7% and 4.4% under 808 nm irradiation, respectively. Therefore, the Mo154/TK-14 assembly reflects convincing antibacterial properties compared to Mo154. This is due to the synergistic effect between the peptide-binding enhanced 808 nm absorption and the improved PTT properties. The antimicrobial assembly offers a novel strategy for the rational design of light-responsive antibacterial materials.
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Affiliation(s)
- Yu Wang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, No. 2699 Qianjin Street, Changchun 130012, P. R. China.
- Institute of Theoretical Chemistry, College of Chemistry, Jilin University, No. 2 Liutiao Road, Changchun 130023, P. R. China
| | - Gang Chen
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, No. 2699 Qianjin Street, Changchun 130012, P. R. China.
- Institute of Theoretical Chemistry, College of Chemistry, Jilin University, No. 2 Liutiao Road, Changchun 130023, P. R. China
| | - Rongrong Liu
- Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education, College of Life Science, Jilin University, No. 2699 Qianjin Street, Changchun 130012, P. R. China
| | - Xuexun Fang
- Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education, College of Life Science, Jilin University, No. 2699 Qianjin Street, Changchun 130012, P. R. China
| | - Fei Li
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, No. 2699 Qianjin Street, Changchun 130012, P. R. China.
- Institute of Theoretical Chemistry, College of Chemistry, Jilin University, No. 2 Liutiao Road, Changchun 130023, P. R. China
| | - Lixin Wu
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, No. 2699 Qianjin Street, Changchun 130012, P. R. China.
| | - Yuqing Wu
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, No. 2699 Qianjin Street, Changchun 130012, P. R. China.
- Institute of Theoretical Chemistry, College of Chemistry, Jilin University, No. 2 Liutiao Road, Changchun 130023, P. R. China
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2
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Gao Y, Choudhari M, Such GK, Ritchie C. Polyoxometalates as chemically and structurally versatile components in self-assembled materials. Chem Sci 2022; 13:2510-2527. [PMID: 35356680 PMCID: PMC8890132 DOI: 10.1039/d1sc05879g] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Accepted: 12/21/2021] [Indexed: 01/16/2023] Open
Abstract
Polyoxometalates (POMs) are anionic molecular metal oxides with expansive diversity in terms of their composition, structure, nuclearity and charge. Within this vast collection of compounds are dominant structural motifs (POM platforms), that are amenable to significant chemical tuning with minimal perturbation of the inorganic oxide molecular structure. Consequently, this enables the systematic investigation of these compounds as inorganic additives within materials whereby structure and charge can be tuned independently i.e. [PW12O40]3- vs. [SiW12O40]4- while also investigating the impact of varying the charge balancing cations on self-assembly. The rich surface chemistry of POMs also supports their functionalisation by organic components to yield so-called inorganic-organic hybrids which will be the key focus of this perspective. We will introduce the modifications possible for each POM platform, as well as discussing the range of nanoparticles, microparticles and surfaces that have been developed using both surfactant and polymer building blocks. We will also illustrate important examples of POM-hybrids alongside their potential utility in applications such as imaging, therapeutic delivery and energy storage.
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Affiliation(s)
- Yanting Gao
- School of Chemistry, The University of Melbourne Parkville Victoria 3010 Australia
- School of Chemistry, Monash University Clayton Victoria 3800 Australia
| | - Manjiri Choudhari
- School of Chemistry, Monash University Clayton Victoria 3800 Australia
| | - Georgina K Such
- School of Chemistry, The University of Melbourne Parkville Victoria 3010 Australia
| | - Chris Ritchie
- School of Chemistry, Monash University Clayton Victoria 3800 Australia
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3
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Li B, Xuan L, Wu L. Polyoxometalate-Containing Supramolecular Gels. Macromol Rapid Commun 2022; 43:e2200019. [PMID: 35102624 DOI: 10.1002/marc.202200019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Revised: 01/27/2022] [Indexed: 11/08/2022]
Abstract
Supramolecular gels are important soft materials with various applications, which are fabricated through hydrogen bonding, π-π stacking, electrostatic or host-guest interactions. Introducing functional groups, especially inorganic components, is an efficient strategy to obtain gels with robust architecture and high performance. Polyoxometalates (POMs), as a class of negatively-charged clusters, have defined structures and multiple interaction sites, resulting in their potential as building blocks for constructing POM-containing supramolecular gels. The introduction of POMs into gels not only provides strong driving forces for the formation of gels due to the characteristics of charged cluster and oxygen-rich surface, but also brings new properties sourcing from unique electronic structures of POMs. Though many POM-containing gels have been reported, a comprehensive review is still absent. Herein, the concept of POM-containing gels is discussed, following with the design strategies and driving forces. To better understand the results in the literature, detailed examples, which are classified into several categories based on the types of organic components, are presented to illustrate the gelation process and gel structures. Moreover, applications of POM-containing gels in energy chemistry, sustainable chemistry and other aspects are also reviewed, as well as the future developments of this field. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Bao Li
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Luyun Xuan
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Lixin Wu
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, P. R. China
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4
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Zhang RY, Cui MH, Wang WW, Li WL, Zhao JP, Liu FC. Dicarboxylate Modulating Molecular-Ionic Platinum Compounds with Variable Stacking and Photoluminescence. Inorg Chem 2022; 61:1997-2009. [PMID: 35029375 DOI: 10.1021/acs.inorgchem.1c03146] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Under solvothermal conditions, 10 molecular-ionic platinum compounds [Pt(NIA)2]·(L)·nH2O (L = dicarboxylate) were synthesized. In the reaction, acetonitrile undergoes trimerization in situ to generate N-(1-iminoethyl)acetamidine (NIA), which coordinates to PtII ions in forming the N-(1-iminoethyl)acetamidine platinum cation, while the organic carboxylates act as anions. Structural analysis shows that carboxylate ligands regulate the mode of packing of [Pt(NIA)2] in those compounds. Photoluminescence studies show that the photoluminescence behaviors of those compounds also depended on the carboxylate ligands. 1-4, 6, and 7 show blue light emission with fluorescence emission wavelengths of 437-440 nm despite the different carboxylate ligands used. 5 and 8 show green emissions with maximum intensity peak positions of 522 nm. Compared with that of 5 and 8, the emission of 9 and 10 has the same red shifts with peak positions of 567 and 528 nm. The variable-temperature photoluminescence studies reveal that 8 and 10 show two different thermal quenching (TQ) zones in the range of 80-420 K, while the emission intensity of 9 shows negative thermal quenching at low temperatures of 80-220 K and TQ in the range of 220-420 K.
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Affiliation(s)
- Ruo-Yi Zhang
- School of Chemistry and Chemical Engineering, TKL of Organic Solar Cells and Photochemical Conversion, Tianjin Key Laboratory of Drug Targeting and Bioimaging, Tianjin University of Technology, Tianjin 300384, P. R. China
| | - Ming-Hui Cui
- School of Chemistry and Chemical Engineering, TKL of Organic Solar Cells and Photochemical Conversion, Tianjin Key Laboratory of Drug Targeting and Bioimaging, Tianjin University of Technology, Tianjin 300384, P. R. China
| | - Wei-Wei Wang
- School of Chemistry and Chemical Engineering, TKL of Organic Solar Cells and Photochemical Conversion, Tianjin Key Laboratory of Drug Targeting and Bioimaging, Tianjin University of Technology, Tianjin 300384, P. R. China
| | - Wen-Liang Li
- School of Chemistry and Chemical Engineering, TKL of Organic Solar Cells and Photochemical Conversion, Tianjin Key Laboratory of Drug Targeting and Bioimaging, Tianjin University of Technology, Tianjin 300384, P. R. China
| | - Jiong-Peng Zhao
- School of Chemistry and Chemical Engineering, TKL of Organic Solar Cells and Photochemical Conversion, Tianjin Key Laboratory of Drug Targeting and Bioimaging, Tianjin University of Technology, Tianjin 300384, P. R. China
| | - Fu-Chen Liu
- School of Chemistry and Chemical Engineering, TKL of Organic Solar Cells and Photochemical Conversion, Tianjin Key Laboratory of Drug Targeting and Bioimaging, Tianjin University of Technology, Tianjin 300384, P. R. China
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5
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Light-guided tumor diagnosis and therapeutics: from nanoclusters to polyoxometalates. CHINESE CHEM LETT 2021. [DOI: 10.1016/j.cclet.2021.12.057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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6
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Zhang S, Li M, Zhang Y, Wang R, Song Y, Zhao W, Lin S. A supramolecular complex based on a Gd-containing polyoxometalate and food-borne peptide for MRI/CT imaging and NIR-triggered photothermal therapy. Dalton Trans 2021; 50:8076-8083. [PMID: 34018508 DOI: 10.1039/d1dt00759a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A multifunctional supramolecular complex is reported for the integrated multiple magnetic resonance imaging/computed X-ray tomography (MRI/CT) imaging and photothermal therapy, wherein a gadolinium-substituted paramagnetic polyoxometalate cluster and food-borne antioxidant peptides identified from the trepang protein hydrolysates are introduced. The as-prepared complex maintained an uniform particle size and much better biocompatibility, and is an ideal candidate for the in vivo applications. The complex allows for T1-weighted MR imaging and a high Hounsfield unit value for enhanced CT imaging. Interestingly, we demonstrate that the complex possesses outstanding photothermal cancer-killing effects due to its high photothermal conversion efficiency under the exposure of an NIR laser and enhanced antibacterial activity to avoid bacterial infection from the thermal therapeutic process. These results indicate that the supramolecular complex platform exhibit potential for accurate medical diagnosis at an early stage and effective eradication of the tumor cells.
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Affiliation(s)
- Simin Zhang
- National Engineering Research Center of Seafood, School of Food Science and Technology, Dalian Polytechnic University, Dalian, 116034, P. R. China. and Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian 116034, China
| | - Meng Li
- National Engineering Research Center of Seafood, School of Food Science and Technology, Dalian Polytechnic University, Dalian, 116034, P. R. China.
| | - Yuan Zhang
- State Key Laboratory of Inorganic Synthesis & Preparative Chemistry, College of Chemistry, Jilin University, Changchun, 130012, China
| | - Ruichun Wang
- National Engineering Research Center of Seafood, School of Food Science and Technology, Dalian Polytechnic University, Dalian, 116034, P. R. China.
| | - Yukun Song
- National Engineering Research Center of Seafood, School of Food Science and Technology, Dalian Polytechnic University, Dalian, 116034, P. R. China.
| | - Weiping Zhao
- National Engineering Research Center of Seafood, School of Food Science and Technology, Dalian Polytechnic University, Dalian, 116034, P. R. China.
| | - Songyi Lin
- National Engineering Research Center of Seafood, School of Food Science and Technology, Dalian Polytechnic University, Dalian, 116034, P. R. China. and Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian 116034, China
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7
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Guedes G, Wang S, Santos HA, Sousa FL. Polyoxometalate Composites in Cancer Therapy and Diagnostics. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000066] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Gabriela Guedes
- Chemistry Department and CICECO-Aveiro Institute of Materials; University of Aveiro; Campus Universitário de Santiago 3810-193 Aveiro Portugal
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy; University of Helsinki; Viikinkaari 5 E (P.O.Box 56) 00014 Helsinki Finland
| | - Shiqi Wang
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy; University of Helsinki; Viikinkaari 5 E (P.O.Box 56) 00014 Helsinki Finland
| | - Hélder A. Santos
- Helsinki Institute of Life Science; University of Helsinki; Viikinkaari 5 E (P.O.Box 56) 00014 Helsinki Finland
| | - Filipa L. Sousa
- Chemistry Department and CICECO-Aveiro Institute of Materials; University of Aveiro; Campus Universitário de Santiago 3810-193 Aveiro Portugal
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8
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Kong X, Wan G, Li B, Wu L. Recent advances of polyoxometalates in multi-functional imaging and photothermal therapy. J Mater Chem B 2020; 8:8189-8206. [DOI: 10.1039/d0tb01375g] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The recent advances of polyoxometalate clusters in terms of near infrared photothermal properties for targeted tumor therapy have been summarized while the combined applications with various bio-imaging techniques and chemotherapies are reviewed.
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Affiliation(s)
- Xueping Kong
- State Key Laboratory of Supramolecular Structure and Materials
- College of Chemistry
- Jilin University
- Changchun
- China
| | - Guofeng Wan
- State Key Laboratory of Supramolecular Structure and Materials
- College of Chemistry
- Jilin University
- Changchun
- China
| | - Bao Li
- State Key Laboratory of Supramolecular Structure and Materials
- College of Chemistry
- Jilin University
- Changchun
- China
| | - Lixin Wu
- State Key Laboratory of Supramolecular Structure and Materials
- College of Chemistry
- Jilin University
- Changchun
- China
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9
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Zhou T, Wan G, Li B, Wu L. Nanocomposites of ionic copolymer integrating Gd-containing polyoxometalate as a multiple platform for enhanced MRI and pH-response chemotherapy. J Mater Chem B 2020; 8:6390-6401. [DOI: 10.1039/d0tb00782j] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Nanocomposites from the co-assemblies of block copolymers and a gadolinium-grafting inorganic cluster were constructed as a multifunctional platform for MRI enhancement, drug loading, and environment-response release at local positions.
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Affiliation(s)
- Tingting Zhou
- State Key Laboratory of Supramolecular Structure and Materials
- College of Chemistry
- Jilin University
- Changchun
- China
| | - Guofeng Wan
- State Key Laboratory of Supramolecular Structure and Materials
- College of Chemistry
- Jilin University
- Changchun
- China
| | - Bao Li
- State Key Laboratory of Supramolecular Structure and Materials
- College of Chemistry
- Jilin University
- Changchun
- China
| | - Lixin Wu
- State Key Laboratory of Supramolecular Structure and Materials
- College of Chemistry
- Jilin University
- Changchun
- China
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10
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Li H, Wu L. A perspective on polyoxometalates as versatile synthons for precisely hybridized polymer materials. POLYM INT 2019. [DOI: 10.1002/pi.5948] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Haolong Li
- State Key Laboratory of Supramolecular Structure and MaterialsCollege of Chemistry, Jilin University Changchun China
| | - Lixin Wu
- State Key Laboratory of Supramolecular Structure and MaterialsCollege of Chemistry, Jilin University Changchun China
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11
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Yang Y, Chen F, Tian X, Chen T, Wu L, Jin LY. Supramolecular nanostructures constructed by rod-coil molecular isomers: effect of rod sequences on molecular assembly. SOFT MATTER 2019; 15:6718-6724. [PMID: 31389465 DOI: 10.1039/c9sm01279f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Coil-rod-coil molecules, composed of flexible oligoether chains and conjugated rod blocks, have a well-known ability to produce various nanostructures in bulk and in aqueous solution. Herein we report the synthesis and self-assembly of coil-rod-coil molecules based on the sequence of the rod building block and the type of oligoether coil chain. These molecules consist of conjugated rod segments, which are composed of biphenyl, terphenyl, and acetylenic bonds, with chiral oligoether chains as flexible coil segments. The experimental results imply that the sequence of the rod segments markedly influences the self-assembled nanostructures of coil-rod-coil molecules in the bulk state, and that the type of coil chain strongly affects the morphology of the supramolecular nanoassemblies of these molecules in aqueous solution. In the bulk state, molecules 1a and 1b, which contain biphenyl units connected to the end of the coil segments self-organize into a hexagonal perforated lamellar phase, and oblique columnar and body-centred tetragonal structures, respectively. However, molecules 2a and 2b bearing terphenyl units linked to the end of the coil segments self-assemble into lamellar, hexagonal perforated lamellar and hexagonal columnar structures. In aqueous solution, rod-coil molecular isomers with linear chiral oligoether chains self-assemble into helical nanofibres of various lengths. Meanwhile, isomers with chiral oligoether dendron chains self-organize into sheet-like nanoribbons of different sizes.
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Affiliation(s)
- Yuntian Yang
- Key Lab for Organism Resources of the Changbai Mountain and Functional Molecules, and Department of Chemistry, College of Science, Yanbian University, No. 977 Gongyuan Road, Yanji 133002, People's Republic of China.
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12
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Zhang S, Peng B, Xue P, Kong X, Tang Y, Wu L, Lin S. Polyoxometalate-antioxidant peptide assembly materials with NIR-triggered photothermal behaviour and enhanced antibacterial activity. SOFT MATTER 2019; 15:5375-5379. [PMID: 31259985 DOI: 10.1039/c9sm01059a] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Herein, a novel photothermal agent based on polyoxometalate clusters and food-borne antioxidant peptides was exploited to overcome the inherent problems of poor photothermal stability of polyoxometalate photothermal materials, which commonly appear in the current stage of development, and the inevitable simultaneous inflammatory responses during the therapeutic process.
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Affiliation(s)
- Simin Zhang
- National Engineering Research Center of Seafood, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, P. R. China.
| | - Bo Peng
- National Engineering Research Center of Seafood, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, P. R. China.
| | - Peiyu Xue
- National Engineering Research Center of Seafood, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, P. R. China.
| | - Xueping Kong
- State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun, 130012, China
| | - Yue Tang
- National Engineering Research Center of Seafood, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, P. R. China.
| | - Lixin Wu
- State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun, 130012, China
| | - Songyi Lin
- National Engineering Research Center of Seafood, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, P. R. China.
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13
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Liu D, Zhang G, Gao B, Li B, Wu L. From achiral to helical bilayer self-assemblies of a 1,3,5-triazine-2,4,6-triphenol-grafted polyanionic cluster: countercation and solvent modulation. Dalton Trans 2019; 48:11623-11627. [DOI: 10.1039/c9dt01780a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
An organic-component grafted polyanionic cluster performs assembly structures from regular head to tail bilayer to inverse helical packing upon solvent polarity and counterions.
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Affiliation(s)
- Danjinkun Liu
- State Key Laboratory of Supramolecular Structure and Materials
- Institute of Theoretical Chemistry and College of Chemistry
- Jilin University
- Changchun 130012
- P. R. China
| | - Guohua Zhang
- State Key Laboratory of Supramolecular Structure and Materials
- Institute of Theoretical Chemistry and College of Chemistry
- Jilin University
- Changchun 130012
- P. R. China
| | - Bo Gao
- State Key Laboratory of Supramolecular Structure and Materials
- Institute of Theoretical Chemistry and College of Chemistry
- Jilin University
- Changchun 130012
- P. R. China
| | - Bao Li
- State Key Laboratory of Supramolecular Structure and Materials
- Institute of Theoretical Chemistry and College of Chemistry
- Jilin University
- Changchun 130012
- P. R. China
| | - Lixin Wu
- State Key Laboratory of Supramolecular Structure and Materials
- Institute of Theoretical Chemistry and College of Chemistry
- Jilin University
- Changchun 130012
- P. R. China
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14
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Duan F, Liu X, Xu W, Tao Y, Li B, Wu L. Supramolecular interaction-induced assemblies of polyanions and 2-aminopyridinium in two polyoxometalate-based hybrids. ACTA CRYSTALLOGRAPHICA SECTION C-STRUCTURAL CHEMISTRY 2018; 74:1325-1333. [PMID: 30398185 DOI: 10.1107/s2053229618012548] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Accepted: 09/05/2018] [Indexed: 11/10/2022]
Abstract
Organic-inorganic hybrids consisting of organic cations and polyanions are promising functional materials due to their various compositions and structures. An important aspect of these materials is the interactions between the organic and inorganic components, which not only produce the final structures, but also influence the properties. Here, we investigated the interactions between organic cations and polyanions using protonated 2-aminopyridinium (Hap) as the cation, and successfully obtained two polyoxometalate-based hybrids, namely (C5H7N2)4[Mo8O26], (I), and (C5H7N2)2[NiMo6O16(OH)2{CH3C(CH2O)3}2]·4H2O, (II). In the crystal structure of (I), every Hap cation links with two polyanions by donating one or two N-H...O hydrogen bonds, and every polyanion is surrounded by eight Hap cations via terminal or bridging O atoms. Conversely, in compound (II), every Hap cation only links with one polyanion decorated by a triol ligand; this organic-inorganic component further assembles via uncoordinated water molecules. In the extended structures, Hap plays a key role, not only providing a counter charge, but also acting as `glue' linking polyanions in the role of hydrogen-bond donors. In both compounds, as the nodes of the supramolecular network, the polyanions exhibit an ordered two-dimensional arrangement due to strong hydrogen bonds and electrostatic interactions between the organic and inorganic parts. The electrochemistry of compound (I) shows that redox sourcing from polyanions is a surface-controlled process. Conversely, the magnetic behaviour of compound (II) indicates dominant antiferromagnetic properties.
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Affiliation(s)
- Fengxue Duan
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry and Institute of Theoretical Chemistry, Jilin University, Changchun 130012, People's Republic of China
| | - Xiaoting Liu
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry and Institute of Theoretical Chemistry, Jilin University, Changchun 130012, People's Republic of China
| | - Wei Xu
- State Key Laboratory of Inorganic Synthesis & Preparative Chemistry, Jilin University, Changchun 130012, People's Republic of China
| | - Yanchun Tao
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry and Institute of Theoretical Chemistry, Jilin University, Changchun 130012, People's Republic of China
| | - Bao Li
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry and Institute of Theoretical Chemistry, Jilin University, Changchun 130012, People's Republic of China
| | - Lixin Wu
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry and Institute of Theoretical Chemistry, Jilin University, Changchun 130012, People's Republic of China
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15
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Yu S, Sun R, Chen T, Jin LY. Supramolecular helical nanostructures from self-assembly of coil-rod-coil amphiphilic molecules incorporating the dianthranide unit. SOFT MATTER 2018; 14:6822-6827. [PMID: 30043028 DOI: 10.1039/c8sm01217b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Coil-rod-coil amphipathic oligomers composed of a rigid dianthranide unit and a hydrophilic branched oligoether as the coil segment were synthesized. These amphiphilic molecules self-assemble into clew-like aggregates composed of fibres or helical nanofibers in aqueous solution. Subsequently, supramolecular polymers were produced from the above objects through charge-transfer interactions by adding 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane (4F-TCNQ). Interestingly, temperature-sensitive supramolecular chirality was induced by lateral methyl units located at the interface of the rigid and flexible segments. However, upon addition of the electron-acceptor molecule, 4F-TCNQ, strong donor-acceptor interactions restrict any change in supramolecular chirality with temperature.
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Affiliation(s)
- Shengsheng Yu
- Key Laboratory for Organism Resources of the Changbai Mountain and Functional Molecules, and Department of Chemistry, College of Science, Yanbian University, No. 977 Gongyuan Road, Yanji 133002, People's Republic of China.
| | - Rui Sun
- Key Laboratory for Organism Resources of the Changbai Mountain and Functional Molecules, and Department of Chemistry, College of Science, Yanbian University, No. 977 Gongyuan Road, Yanji 133002, People's Republic of China.
| | - Tie Chen
- Key Laboratory for Organism Resources of the Changbai Mountain and Functional Molecules, and Department of Chemistry, College of Science, Yanbian University, No. 977 Gongyuan Road, Yanji 133002, People's Republic of China.
| | - Long Yi Jin
- Key Laboratory for Organism Resources of the Changbai Mountain and Functional Molecules, and Department of Chemistry, College of Science, Yanbian University, No. 977 Gongyuan Road, Yanji 133002, People's Republic of China.
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Xia C, Zhang S, Sun D, Jiang B, Wang W, Xin X. Coassembly of Mixed Weakley-Type Polyoxometalates to Novel Nanoflowers with Tunable Fluorescence for the Detection of Toluene. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:6367-6375. [PMID: 29758987 DOI: 10.1021/acs.langmuir.8b00283] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
In this work, three-dimensional nanoflowers with tunable fluorescent properties constructed with mixed Weakley-type polyoxometalates (POMs, Na9[LnW10O36]·32H2O, Ln = Eu, Tb, abbreviated to LnW10) and tetraethylenepentamine (TEPA) have been successfully prepared through a facile ionic self-assembly (ISA) method. The shape and petal size of the nanoflower as well as its fluorescent behaviors can be tuned through varying the ratio of EuW10/TbW10. The varied-temperature emission behaviors at 80-260 K show that the fluorescent intensity of both Tb3+ and Eu3+ decreased with the increase in temperature, which makes them potential luminescent ratiometric thermometers. Moreover, after being mixed with polydimethylsiloxane (PDMS), the as-formed hybrid films showed stable fluorescence along with good transparency. The robustness of the hybrid films was also demonstrated by corrosion resistance upon treatment with strong acid and alkali and thus can be used as a sensor to detect toluene circularly. Our results provide a new avenue to the facile construction of fluorescent composites and demonstrate that the POM complexes can be further used in supramolecular chemistry and nanomaterials.
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Wang G, Guan W, Li B, Wu L. Cluster polyanions and surface-covered complexes: From synergistic self-assembly to bio-functionalization. Curr Opin Colloid Interface Sci 2018. [DOI: 10.1016/j.cocis.2018.01.016] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Ly J, Li Y, Vu MN, Moffat BA, Jack KS, Quinn JF, Whittaker MR, Davis TP. Nano-assemblies of cationic mPEG brush block copolymers with gadolinium polyoxotungstate [Gd(W 5O 18) 2] 9- form stable, high relaxivity MRI contrast agents. NANOSCALE 2018; 10:7270-7280. [PMID: 29632934 DOI: 10.1039/c8nr01544a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Polyoxometalates (POMs) incorporating paramagnetic ions, such as gadolinium, show promise as contrast agents for application in magnetic resonance imaging (MRI). Specifically, [Gd(W5O18)2]9- (denoted as GdWO) has been reported to have a higher relaxivity than commercially available contrast agents, but it's clinical utility has been limited by the intrinsic instability of POMs at physiological pH (7.4). In the current report we present a stability study on neat GdWO and nano-assemblies of block copolymers with GdWO in the pH range 5.0-7.4 to assess their suitability as MRI contrast agents. Neat GdWO only maintained structural stability between pH 5.4 and 6.4, and demonstrated poor MRI contrast at pH 7.4. To address this pH instability, GdWO was self-assembled with cationic mPEG brush block copolymers containing 20 or 40 units derived from the cationic monomer, 2-dimethylaminoethyl methacrylate (DMAEMA). Nano-assemblies with different charge ratios were synthesised and characterised according to their size, stability, contrasting properties and toxicity. The longitudinal relaxivity (r1) of the nano-assemblies was found to be dependent on the charge ratio, but not on the length of the cationic polymer block. Further investigation of PDMAEMA20 nano-assemblies demonstrated that they were stable over the pH range 5.0-7.4, exhibiting a higher r1 than either neat GdWO (2.77 s-1 mM-1) or clinical MRI contrast agent Gd-DTPA (4.1 s-1 mM-1) at pH 7.4. Importantly, the nano-assembly with the lowest charge ratio (0.2), showed the highest r1 (12.1 s-1 mM-1) whilst, stabilising GdWO over the pH range studied, eliciting low toxicity with MDA-MB231 cells.
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Affiliation(s)
- Joanne Ly
- ARC Centre of Excellence in Convergent Bio-Nano Science & Technology, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, Victoria 3052, Australia.
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Zhang S, Chen H, Zhang G, Kong X, Yin S, Li B, Wu L. An ultra-small thermosensitive nanocomposite with a Mo 154-core as a comprehensive platform for NIR-triggered photothermal-chemotherapy. J Mater Chem B 2017; 6:241-248. [PMID: 32254166 DOI: 10.1039/c7tb02743e] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
A uniform ultra-small (<10 nm) nanosized dendritic composite was reported for combined photothermal-chemotherapy, wherein a giant ring-like polymolybdate cluster was introduced for the first time as a photothermal therapeutic agent. The giant polyoxometalate cluster possesses strong absorption characteristics in the near infrared region, whereas it has never been applied for biomaterials due to its sensitivity towards environment and structural instability under physiological conditions. Herein, a cationic dendron bearing triethylene glycol monomethyl ether terminal groups was used to cover a giant polyanionic cluster Mo154 surface through a simple electrostatic interaction. Arising from their assembly, the formed core-shell supramolecular composite that has uniform size, precise chemical composition and definite molecular weight not only exhibited mono-dispersion and low cytotoxicity, but also imparted anticancer drug loading and thermoresponsive properties, thus leading to NIR-controlled drug release. When irradiated with an 808 nm NIR laser, the formed complex had significant in vivo photothermal-chemotherapeutic effects on tumor tissue, which makes it a promising material for applications in nanomedicine.
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Affiliation(s)
- Simin Zhang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, China.
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20
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Xia C, Wang Z, Sun D, Jiang B, Xin X. Hierarchical Nanostructures Self-Assembled by Polyoxometalate and Alkylamine for Photocatalytic Degradation of Dye. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:13242-13251. [PMID: 29083188 DOI: 10.1021/acs.langmuir.7b03495] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
A novel simple strategy for alkylamine-directed self-assembly of Weakley-type polyoxometalate (POM, Na9[EuW10O36]·32H2O, abbreviated to EuW10) to form three-dimensional nanoflowers has been successfully developed through the ionic self-assembly (ISA) method. For comparison, different molecular weights of alkylamines including diethylenetriamine, triethylenetetramine, and tetraethylenepentamine (TEPA) were selected to construct hierarchical nanostructures. Our results revealed that the morphologies and sizes of the nanostructures could be simply controlled by varying the molecular weights and concentrations of alkylamines. The fluorescent color of EuW10/TEPA nanoflowers changed compared with that of EuW10 owing to the varied symmetry degree of europium coordination in EuW10/TEPA nanoflowers. It is demonstrated that this effective self-assembly occurs mainly though the hydrogen bond and electrostatic interaction between EuW10 and TEPA. What's more, the EuW10/TEPA nanoflowers after calcining showed excellent decomposition efficiency toward methylene blue dyes. Our results further confirmed that ISA method between small molecules and POM can provide a unique "bottom-up" strategy to construct novel structures with functional properties.
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Affiliation(s)
- Congxin Xia
- Key Lab for Colloid and Interface Chemistry of Education Ministry, School of Chemistry and Chemical Engineering, and ‡National Engineering Technology Research Center for Colloidal Materials, Shandong University , Jinan 250100, P. R. China
| | - Zhi Wang
- Key Lab for Colloid and Interface Chemistry of Education Ministry, School of Chemistry and Chemical Engineering, and ‡National Engineering Technology Research Center for Colloidal Materials, Shandong University , Jinan 250100, P. R. China
| | - Di Sun
- Key Lab for Colloid and Interface Chemistry of Education Ministry, School of Chemistry and Chemical Engineering, and ‡National Engineering Technology Research Center for Colloidal Materials, Shandong University , Jinan 250100, P. R. China
| | - Baolai Jiang
- Key Lab for Colloid and Interface Chemistry of Education Ministry, School of Chemistry and Chemical Engineering, and ‡National Engineering Technology Research Center for Colloidal Materials, Shandong University , Jinan 250100, P. R. China
| | - Xia Xin
- Key Lab for Colloid and Interface Chemistry of Education Ministry, School of Chemistry and Chemical Engineering, and ‡National Engineering Technology Research Center for Colloidal Materials, Shandong University , Jinan 250100, P. R. China
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21
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Li B, Li W, Li H, Wu L. Ionic Complexes of Metal Oxide Clusters for Versatile Self-Assemblies. Acc Chem Res 2017; 50:1391-1399. [PMID: 28508633 DOI: 10.1021/acs.accounts.7b00055] [Citation(s) in RCA: 108] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The combination of rational design of building components and suitable utilization of driving force affords spontaneous molecular assemblies with well-defined nanostructure and morphology over multiple length scales. The serious challenges in constructing assemblies with structural advantages for the realization of functions programmed into the building components usually lie ahead since the process that occurs does not always follow the expected roadmap in the absence of external intervention. Thus, prefabricated intermediates that help in governing the target self-assemblies are developed into a type of unique building blocks. Metal oxide cluster polyanions are considered as a type of molecular nanoclusters with size scale and structural morphology similar to those of many known inorganic particles and clusters but possess distinctive characteristics. Following the understanding of these clusters in self-assembly and the rationalization of their most efficient design strategy and approach, the obtained fundamental principles can also be applied in common nanoparticle- and cluster-based systems. On the other hand, the deliberate synergy offered by organic countercations that support the self-assembly of these clusters greatly expands the opportunity for the functionalization of complex building units via control of multiple interactions. The ionic combination of the inorganic clusters with hydrophilicity and the cationic organic component with hydrophobicity leads to discrete properties of the complexes. Significantly, the core-shell structure with rigid-flexible features and amphiphilicity will pave the way for hierarchical self-assemblies of the obtained complexes, while the intrinsic characteristics of the metal oxide clusters can be modulated through external physicochemical stimuli. Within this context, over the past decade we have extensively explored the ionic combination of inorganic polyanionic clusters with cationic organic amphiphiles and devoted our efforts to establishing the general rules and structure-property relationships of the formed complexes for constructing self-assemblies at the interface, in solution, and in solid matrixes. Specific interest has been focused on the functional synergy deriving from the incompatible components in highly organized self-assemblies. In this Account, we describe the recent progress on the ionic complexation of polyoxometalate clusters with cationic amphiphiles and the construction of diverse self-assembled nanostructures. First, the fundamental structural characteristics and molecular geometries of the prepared complexes are analyzed. The construction principle and diversity of the self-assembly based on the complexes and the smart stimuli response are then discussed, subject to the adjustment of various non-covalent interactions occurring in the assemblies. Subsequently, we enumerate the functional applications of the ionic complexes assembling into organic, inorganic, and even biological matrixes. The inspiration from the construction of ionic complexation and self-assembly in this Account provides vivid profiles for the design of hybrid materials involving nanoclusters and/or nanoparticles with rich potentials in addition to polyoxometalate chemistry.
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Affiliation(s)
- Bao Li
- State Key Laboratory of Supramolecular
Structure and Materials, College of Chemistry and Institute of Theoretical
Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Wen Li
- State Key Laboratory of Supramolecular
Structure and Materials, College of Chemistry and Institute of Theoretical
Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Haolong Li
- State Key Laboratory of Supramolecular
Structure and Materials, College of Chemistry and Institute of Theoretical
Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Lixin Wu
- State Key Laboratory of Supramolecular
Structure and Materials, College of Chemistry and Institute of Theoretical
Chemistry, Jilin University, Changchun 130012, P. R. China
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