51
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Xiao T, James TD, Borovkov V, Castellano RK, Deng C. Editorial: Suprastars of Chemistry. Front Chem 2022; 10:932508. [PMID: 35734441 PMCID: PMC9207770 DOI: 10.3389/fchem.2022.932508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Accepted: 05/24/2022] [Indexed: 11/25/2022] Open
Affiliation(s)
- Tangxin Xiao
- School of Petrochemical Engineering, Changzhou University, Changzhou, China
- *Correspondence: Tangxin Xiao, ; Tony D. James, ; Victor Borovkov, ; Ronald K. Castellano, ; Chao Deng,
| | - Tony D. James
- Department of Chemistry, University of Bath, Bath, United Kingdom
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, China
- *Correspondence: Tangxin Xiao, ; Tony D. James, ; Victor Borovkov, ; Ronald K. Castellano, ; Chao Deng,
| | - Victor Borovkov
- Department of Chemistry and Biotechnology, School of Science, Tallinn University of Technology, Tallinn, Estonia
- *Correspondence: Tangxin Xiao, ; Tony D. James, ; Victor Borovkov, ; Ronald K. Castellano, ; Chao Deng,
| | - Ronald K. Castellano
- Department of Chemistry, University of Florida, Gainesville, FL, United States
- *Correspondence: Tangxin Xiao, ; Tony D. James, ; Victor Borovkov, ; Ronald K. Castellano, ; Chao Deng,
| | - Chao Deng
- College of Chemistry, Chemical Engineering, and Materials Science, Soochow University, Suzhou, China
- *Correspondence: Tangxin Xiao, ; Tony D. James, ; Victor Borovkov, ; Ronald K. Castellano, ; Chao Deng,
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52
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Hefnawy MA, Medany SS, Fadlallah SA, El-Sherif RM, Hassan SS. Novel Self-assembly Pd(II)-Schiff Base Complex Modified Glassy Carbon Electrode for Electrochemical Detection of Paracetamol. Electrocatalysis (N Y) 2022. [DOI: 10.1007/s12678-022-00741-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
AbstractA self-assembly Pd-Schiff base complex was synthesized and used as an electrochemical sensor in phosphate buffer solution, where it enhanced the electrocatalytic activity toward the paracetamol detection. The Schiff base {(HL) = (4-(((Z)-3-(hydroxyimino) butan-2-ylidene) amino)-1,5-dimethyl-2-phenyl-1,2-dihydro-3H-pyrazol-3-one)} was selected to prepare Pd-based complexes due to its high antimicrobial activity. A linear calibration curve was constructed using GC/Pd-SB in paracetamol concentration range of 1–50 μM and its detection limit was calculated as 0.067 μM. The modified electrode, GC/Pd-SB, could successfully determine the paracetamol concentration in human blood serum and commercial drug tablets with high sensitivity. The prepared metal complex was characterized using techniques, namely, X-ray diffraction (XRD) and scanning electron microscope (SEM). In addition, electrochemical studies were performed using different electrochemical techniques like cyclic voltammetry (CV), linear sweep voltammetry (LSV), chronoamperometry (CA), and electrochemical impedance spectroscopy (EIS). DFT calculations were used to estimate the equilibrium geometry, molecular orbital, ground-state properties, and interaction energy between paracetamol and palladium.
Graphical Abstract
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53
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Kumar S, Jana A, Bhowmick S, Das N. Topical progress in medicinal applications of self‐assembled organoplatinum complexes using diverse Pt (II)– and N–based tectons. Appl Organomet Chem 2022. [DOI: 10.1002/aoc.6722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Saurabh Kumar
- Department of Chemistry Indian Institute of Technology Patna Patna Bihar India
| | - Achintya Jana
- Department of Chemistry Indian Institute of Technology Patna Patna Bihar India
| | - Sourav Bhowmick
- Department of Chemistry Indian Institute of Technology Patna Patna Bihar India
| | - Neeladri Das
- Department of Chemistry Indian Institute of Technology Patna Patna Bihar India
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54
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Chen L, Wu X, Gilchrist AM, Gale PA. Organoplatinum Compounds as Anion-Tuneable Uphill Hydroxide Transporters. Angew Chem Int Ed Engl 2022; 61:e202116355. [PMID: 35192743 PMCID: PMC9310596 DOI: 10.1002/anie.202116355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Indexed: 11/12/2022]
Abstract
Active transport of ions uphill, creating a concentration gradient across a cell membrane, is essential for life. It remains a significant challenge to develop synthetic systems that allow active uphill transport. Here, a transport process fuelled by organometallic compounds is reported that creates a pH gradient. The hydrolysis reaction of PtII complexes results in the formation of aqua complexes that established rapid transmembrane movement ("flip-flop") of neutral Pt-OH species, leading to protonation of the OH group in the inner leaflet, generating OH- ions, and so increasing the pH in the intravesicular solution. The organoplatinum complex effectively transports bound hydroxide ions across the membrane in a neutral complex. The initial net flow of the PtII complex into the vesicles generates a positive electric potential that can further drive uphill transport because the electric potential is opposed to the chemical potential of OH- . The OH- ions equilibrate with this transmembrane electric potential but cannot remove it due to the relatively low permeability of the charged species. As a result, effective hydroxide transport against its concentration gradient can be achieved, and multiple additions can continuously drive the generation of OH- against its concentration gradient up to ΔpH>2. Moreover, the external addition of different anions can control the generation of OH- depending on their anion binding affinity. When anions displayed very high binding affinities towards PtII compounds, such as halides, the external anions could dissipate the pH gradient. In contrast, a further pH increase was observed for weak binding anions, such as sulfate, due to the increase of positive electric potential.
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Affiliation(s)
- Li‐Jun Chen
- School of ChemistryThe University of SydneySydneyNSW 2006Australia
| | - Xin Wu
- School of ChemistryThe University of SydneySydneyNSW 2006Australia
| | | | - Philip A. Gale
- School of ChemistryThe University of SydneySydneyNSW 2006Australia
- The University of Sydney Nano Institute (SydneyNano)The University of SydneySydneyNSW 2006Australia
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55
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Zhang Z, Yao Y, He L, Hong T, Li S, Huang F, Stang PJ. Coordination-driven self-assembly of dibenzo-18-crown-6 functionalized Pt(II) metallacycles. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.05.035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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56
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Bokotial D, Chowdhury A. An overview on the Proton Conductivity of Supramolecular Coordination Complexes. RESULTS IN CHEMISTRY 2022. [DOI: 10.1016/j.rechem.2022.100361] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
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57
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Self-assembly of Mn(I)-based oxamidato-bridged dinuclear molecular tweezers and tetranuclear molecular rectangles. J Organomet Chem 2022. [DOI: 10.1016/j.jorganchem.2022.122371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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58
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Wan X, Li S, Tian Y, Xu J, Shen LC, Zuilhof H, Zhang M, Sue ACH. Twisted pentagonal prisms: AgnL2 metal-organic pillars. Chem 2022. [DOI: 10.1016/j.chempr.2022.04.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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59
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Chen L, Wu X, Gilchrist AM, Gale PA. Organoplatinum Compounds as Anion‐Tuneable Uphill Hydroxide Transporters. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202116355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Li‐Jun Chen
- School of Chemistry The University of Sydney Sydney NSW 2006 Australia
| | - Xin Wu
- School of Chemistry The University of Sydney Sydney NSW 2006 Australia
| | | | - Philip A. Gale
- School of Chemistry The University of Sydney Sydney NSW 2006 Australia
- The University of Sydney Nano Institute (SydneyNano) The University of Sydney Sydney NSW 2006 Australia
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60
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Liang Y, Mei L, Jin Q, Geng J, Wang J, Liu K, Hu K, Yu J, Shi W. Hierarchical assembly of uranyl metallacycles involving macrocyclic hosts. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.03.092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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61
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Ganta S, Drechsler C, Chen Y, Clever GH. Nonaqueous Emulsion Polycondensation Enabled by a Self-Assembled Cage-like Surfactant. Chemistry 2022; 28:e202104228. [PMID: 35018672 PMCID: PMC9303455 DOI: 10.1002/chem.202104228] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Indexed: 11/30/2022]
Abstract
Nonaqueous emulsions are crucial for a range of applications based on water-sensitive systems such as controlled polymerizations requiring anhydrous reaction conditions and the stabilization of readily hydrolyzable reagents or pharmacologically active components. However, defined molecular surfactants to stabilize such nonaqueous emulsions are scarce. We introduce a self-assembled coordination cage, decorated with cholesterol functionalities, to serve as a molecular surfactant for various oil-in-oil emulsions of immiscible organic solvents. While the positively charged cage forms the amphiphile's polar moiety, the non-polar cholesterol appendices can bend in a common direction to stabilize the emulsion. Templated by the droplets, polycondensation reactions were carried out to produce microstructured polyurethane and polyurea materials of different particle sizes and morphologies. Further, the amphiphilic cage can encapsulate a guest molecule and the resulting host-guest assembly was also examined as a surfactant. In addition, the aggregation behavior of the amphiphilic cage in an aqueous medium was examined.
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Affiliation(s)
- Sudhakar Ganta
- Department of Chemistry and Chemical BiologyTU Dortmund UniversityOtto-Hahn Straße 644227DortmundGermany
| | - Christoph Drechsler
- Department of Chemistry and Chemical BiologyTU Dortmund UniversityOtto-Hahn Straße 644227DortmundGermany
| | - Yen‐Ting Chen
- Center of Molecular Spectroscopy and Simulation of Solvent-driven Processes (ZEMOS)Ruhr-University Bochum44801BochumGermany
| | - Guido H. Clever
- Department of Chemistry and Chemical BiologyTU Dortmund UniversityOtto-Hahn Straße 644227DortmundGermany
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62
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Danjo H, Asai K, Tanaka T, Ono D, Kawahata M, Iwatsuki S. Preparation of tricationic tris(pyridylpalladium(II)) metallacyclophane as an anion receptor. Chem Commun (Camb) 2022; 58:2196-2199. [PMID: 35072179 DOI: 10.1039/d1cc05563a] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A tricationic tris(pyridylpalladium(II)) metallacyclophane was prepared from 3,5-dibromopyridine by a successive treatment with tetrakis(triphenylphosphine)palladium(0), diphosphine, and silver salt. Single-crystal X-ray diffraction analysis revealed that the metallacyclophane incorporated one of three counter anions into its hole-shaped cavity to form multidentate C-H⋯anion interactions. Solution-phase 1H NMR experiments in DMSO-d6 indicated that the metallacyclophane exhibited selective binding behavior toward nitrate, tetrafluoroborate, p-toluenesulfonate, perchlorate, and hydrogen sulfate ions, whereas the hexafluoroantimonate ion exhibited only weak interaction toward the metallacyclophane. This anion recognition behavior was further demonstrated by an extraction experiment of water-soluble sulfonate dyes.
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Affiliation(s)
- Hiroshi Danjo
- Department of Chemistry, Konan University, 8-9-1 Okamoto, Higashinada, Kobe 658-8501, Japan.
| | - Kohei Asai
- Graduate School of Natural Science, Konan University, 8-9-1 Okamoto, Higashinada, Kobe 658-8501, Japan
| | - Tomoya Tanaka
- Department of Chemistry, Konan University, 8-9-1 Okamoto, Higashinada, Kobe 658-8501, Japan.
| | - Daiki Ono
- Department of Chemistry, Konan University, 8-9-1 Okamoto, Higashinada, Kobe 658-8501, Japan.
| | - Masatoshi Kawahata
- Showa Pharmaceutical University, 3-3165 Higashi-Tamagawagakuen, Machida, Tokyo 194-8543, Japan
| | - Satoshi Iwatsuki
- Department of Chemistry, Konan University, 8-9-1 Okamoto, Higashinada, Kobe 658-8501, Japan.
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63
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Shao D, She SY, Shen LF, Yang X, Tian Z. Field-induced single-ion magnet behavior in a hydrogen-bonded supramolecular cobalt(II) complex. Polyhedron 2022. [DOI: 10.1016/j.poly.2021.115614] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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64
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Zhou MY, Tong J, Lu HL, Wang XY, Yu SY. Hierarchical self-assembly and packing models of dipalladium(II,II)-based metallacapsules and metallacages based on amide-functionalized multi-pyrazoles. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2021.109145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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65
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Constructing Supramolecular Frameworks Based Imidazolate-Edge-Bridged Metallacalix[3]arenes via Hierarchical Self-Assemblies. CRYSTALS 2022. [DOI: 10.3390/cryst12020212] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Hierarchical self-assembly of novel supramolecular structures has obtained increasing attention. Herein we design and synthesize the palladium(II)-based molecular basket-like structures, as structural analog of metallacalix[3]arene [M3L3]3+ (M = (dmbpy)Pd, (phen)Pd; dmbpy = 4,4’-dimethyl-bipyridine; phen = 1,10-phenanthroline), by coordination-driven self-assembly from imidazolate-containing ligand [4,5-bis(2,5-dimethylthiophen-3-yl)-1H-imidazole (HL) with palladium(II) nitrate precursors (dmbpy)Pd(NO3)2 and (phen)Pd(NO3)2. The difference of the palladium(II) nitrate precursors with π-surface in complex produces variations of the two-dimensional (2-D) and three-dimensional (3-D) high-ordered supramolecular architectures, constructed by π···π packing and hydrogen bonding interactions, with metallacalixarenes as building blocks. These results provide perceptions of further exploring the hierarchical assembly of supramolecular structures based on π···π packing and multiple hydrogen bonding.
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66
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Zhou WL, Lin W, Chen Y, Dai XY, Liu Z, Liu Y. Multivalent supramolecular assembly with ultralong organic room temperature phosphorescence, high transfer efficiency and ultrahigh antenna effect in water. Chem Sci 2022; 13:573-579. [PMID: 35126989 PMCID: PMC8730196 DOI: 10.1039/d1sc05861d] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Accepted: 11/24/2021] [Indexed: 12/15/2022] Open
Abstract
Multivalent supramolecular assemblies have recently attracted extensive attention in the applications of soft materials and cell imaging. Here, we report a novel multivalent supramolecular assembly constructed from 4-(4-bromophenyl)pyridine-1-ium bromide modified hyaluronic acid (HABr), cucurbit[8]uril (CB[8]) and laponite® clay (LP), which could emit purely organic room-temperature phosphorescence (RTP) with a phosphorescence lifetime of up to 4.79 ms in aqueous solution via multivalent supramolecular interactions. By doping the organic dyes rhodamine B (RhB) or sulfonated rhodamine 101 (SR101) into the HABr/CB[8]/LP assembly, phosphorescence energy transfer was realized with high transfer efficiency (energy transfer efficiency = 73–80%) and ultrahigh antenna effect (antenna effect value = 308–362) within the phosphorescent light harvesting system. Moreover, owing to the dynamic nature of the noncovalent interactions, a wide-range spectrum of phosphorescence energy transfer outputs could be obtained not only in water but also on filter paper and a glass plate by adjusting the donor–acceptor ratio and, importantly, white-light emission was obtained, which could be used in the application of information encryption. An ultralong lifetime supramolecular assembly was constructed via multivalent supramolecular interactions and achieved phosphorescence light harvesting. Multicolor (including white) broad-spectrum outputs could be achieved in water and also on filter paper and a glass plate.![]()
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Affiliation(s)
- Wei-Lei Zhou
- College of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University People's Republic of China .,College of Chemistry and Materials Science, Inner Mongolia Key Laboratory of Chemistry for Nature Products and Synthesis for Functional Molecules, Inner Mongolia Minzu University Tongliao 028000 People's Republic of China
| | - Wenjing Lin
- College of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University People's Republic of China
| | - Yong Chen
- College of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University People's Republic of China
| | - Xian-Yin Dai
- College of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University People's Republic of China
| | - Zhixue Liu
- College of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University People's Republic of China
| | - Yu Liu
- College of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University People's Republic of China
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67
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Wang H, Zheng X. Theoretical Study of Macrocyclic Host Molecules: From Supramolecular Recognition to Self-Assembly. Phys Chem Chem Phys 2022; 24:19011-19028. [DOI: 10.1039/d2cp02152h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Supramolecular chemistry focuses on molecular recognition and self-assembly of various building blocks through weak non-covalent interactions, including anion-π, hydrogen bond (HB), hydrophobic interactions, van der Waals (vdW) interactions, etc, which...
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68
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Zhang Y, Li QH, Fang WH, Zhang J. Aluminum molecular rings bearing amino-polyalcohol for iodine capture. Inorg Chem Front 2022. [DOI: 10.1039/d1qi01451j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Amino-polyalcohol-solvothermal synthesis leads to the isolation of a broad range of aluminum molecular rings, which exhibit considerable affinity towards iodine molecules.
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Affiliation(s)
- Yi Zhang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P. R. China
| | - Qiao-Hong Li
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P. R. China
| | - Wei-Hui Fang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P. R. China
| | - Jian Zhang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P. R. China
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69
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Liang Y, Xiang D, Hou Y, Li G, Feng S, Yang M. Size-encoded hierarchical self-assembly of nanoparticles into chains and tubules. J Colloid Interface Sci 2021; 604:866-875. [PMID: 34303886 DOI: 10.1016/j.jcis.2021.07.047] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 06/18/2021] [Accepted: 07/12/2021] [Indexed: 11/24/2022]
Abstract
Hierarchical structures with sophisticated patterns allow the emergence of challenging properties. However, the highly cooperative and specific interactions needed for assembly spanning different length scales are typically lacking in inorganic nanoparticles (NPs). Here we show that size can be a common structural driving force for controlling hierarchical assembly of inorganic NPs into anisotropic superstructures. It involves first the self-limiting assembly of small CdS NPs into large supraparticles and their subsequent spontaneous organization into chains and tubules hundreds of nanometers long. Our quantitative calculations based on DLVO theory reveals an intrinsic size effect relating to the dimension change of assembly units in accordance with a negative cooperativity. It is shown that the size increase in building blocks creates an effective kinetic barrier contrast at different attachment sites due to the increase of interparticle electrostatic repulsion, switching the assembly from thermodynamically preferred 3D to kinetically favored 1D pathway. The size-encoded hierarchical assembly is accompanied by the ligand-controlled Oswald ripening process, which is responsible for the variation of hierarchical patterns from chains to tubules. The general principle in governing multistage inorganic NP ordering represents an important guideline toward the complex mesoscale structures that may surpass traditional materials in both design and functionality.
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Affiliation(s)
- Yuting Liang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, PR China; Key Laboratory of Microsystems and Micronanostructures Manufacturing, Harbin Institute of Technology 2 Yikuang Street, Harbin 150080, PR China
| | - Di Xiang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, PR China; Key Laboratory of Microsystems and Micronanostructures Manufacturing, Harbin Institute of Technology 2 Yikuang Street, Harbin 150080, PR China
| | - Ying Hou
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, PR China
| | - Guangshe Li
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, PR China.
| | - Shouhua Feng
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, PR China.
| | - Ming Yang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, PR China.
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70
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Liu J, Sheng J, Shao L, Zheng Q, Li W, Chen X, Mao L, Wang M. Tetraphenylethylene-Featured Fluorescent Supramolecular Nanoparticles for Intracellular Trafficking of Protein Delivery and Neuroprotection. Angew Chem Int Ed Engl 2021; 60:26740-26746. [PMID: 34622541 DOI: 10.1002/anie.202111213] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Indexed: 11/07/2022]
Abstract
The delivery of protein into mammalian cells enables the dissection and manipulation of biological processes; however, this potency is challenged by the lack of an efficient protein delivery tool and a means to monitor its intracellular trafficking. Herein, we report that the hierarchical self-assembly of tetraphenylethylene (TPE)-featured metal-organic cages (MOCs) and β-cyclodextrin-conjugated polyethylenimine can generate fluorescent supramolecular nanoparticles (FSNPs) to deliver protein into neural cells, a cell line that is hard to transfect using conventional strategy. Further, the aggregation-induced emission (AIE) of TPE enabled the fluorescent monitoring of cytosolic protein release. It is found that FSNPs can deliver and release protein into cytosol for subcellular targeting as fast as 18 h post-delivery. Moreover, the delivery of molecular chaperone DJ-1 using FSNPs activates MAPK/ERK signaling of neural cells to protect cells from oxidative stress.
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Affiliation(s)
- Ji Liu
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Jinhan Sheng
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Leihou Shao
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Qizhen Zheng
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Wenting Li
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xianghan Chen
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Lanqun Mao
- College of Chemistry, Beijing Normal University, Beijing, 100875, China
| | - Ming Wang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
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71
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Cameron JM, Guillemot G, Galambos T, Amin SS, Hampson E, Mall Haidaraly K, Newton GN, Izzet G. Supramolecular assemblies of organo-functionalised hybrid polyoxometalates: from functional building blocks to hierarchical nanomaterials. Chem Soc Rev 2021; 51:293-328. [PMID: 34889926 DOI: 10.1039/d1cs00832c] [Citation(s) in RCA: 68] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
This review provides a comprehensive overview of recent advances in the supramolecular organisation and hierarchical self-assembly of organo-functionalised hybrid polyoxometalates (hereafter referred to as hybrid POMs), and their emerging role as multi-functional building blocks in the construction of new nanomaterials. Polyoxometalates have long been studied as a fascinating outgrowth of traditional metal-oxide chemistry, where the unusual position they occupy between individual metal oxoanions and solid-state bulk oxides imbues them with a range of attractive properties (e.g. solubility, high structural modularity and tuneable properties/reactivity). Specifically, the capacity for POMs to be covalently coupled to an effectively limitless range of organic moieties has opened exciting new avenues in their rational design, while the combination of distinct organic and inorganic components facilitates the formation of complex molecular architectures and the emergence of new, unique functionalities. Here, we present a detailed discussion of the design opportunities afforded by hybrid POMs, where fine control over their size, topology and their covalent and non-covalent interactions with a range of other species and/or substrates makes them ideal building blocks in the assembly of a broad range of supramolecular hybrid nanomaterials. We review both direct self-assembly approaches (encompassing both solution and solid-state approaches) and the non-covalent interactions of hybrid POMs with a range of suitable substrates (including cavitands, carbon nanotubes and biological systems), while giving key consideration to the underlying driving forces in each case. Ultimately, this review aims to demonstrate the enormous potential that the rational assembly of hybrid POM clusters shows for the development of next-generation nanomaterials with applications in areas as diverse as catalysis, energy-storage and molecular biology, while providing our perspective on where the next major developments in the field may emerge.
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Affiliation(s)
- Jamie M Cameron
- Nottingham Applied Materials and Interfaces (NAMI) Group, The GSK Carbon Neutral Laboratories for Sustainable Chemistry, University of Nottingham, UK.
| | - Geoffroy Guillemot
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, IPCM, 4 Place Jussieu, F-75005 Paris, France.
| | - Theodor Galambos
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, IPCM, 4 Place Jussieu, F-75005 Paris, France.
| | - Sharad S Amin
- Nottingham Applied Materials and Interfaces (NAMI) Group, The GSK Carbon Neutral Laboratories for Sustainable Chemistry, University of Nottingham, UK.
| | - Elizabeth Hampson
- Nottingham Applied Materials and Interfaces (NAMI) Group, The GSK Carbon Neutral Laboratories for Sustainable Chemistry, University of Nottingham, UK.
| | - Kevin Mall Haidaraly
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, IPCM, 4 Place Jussieu, F-75005 Paris, France.
| | - Graham N Newton
- Nottingham Applied Materials and Interfaces (NAMI) Group, The GSK Carbon Neutral Laboratories for Sustainable Chemistry, University of Nottingham, UK.
| | - Guillaume Izzet
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, IPCM, 4 Place Jussieu, F-75005 Paris, France.
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72
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Herasymchuk K, Allain M, MacNeil GA, Carré V, Aubriet F, Leznoff DB, Sallé M, Goeb S, Storr T. Exciton Coupling in Redox-Active Salen based Self-Assembled Metallacycles. Chemistry 2021; 27:16161-16172. [PMID: 34595790 DOI: 10.1002/chem.202102745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Indexed: 11/09/2022]
Abstract
The incorporation of a redox-active nickel salen complex into supramolecular structures was explored via coordination-driven self-assembly with homobimetallic ruthenium complexes (bridged by oxalato or 5,8-dihydroxy-1,4-naphthoquinato ligands). The self-assembly resulted in the formation of a discrete rectangle using the oxalato complex and either a rectangle or a catenane employing the larger naphthoquinonato complex. The formation of the interlocked self-assembly was determined to be solvent and concentration dependent. The electronic structure and stability of the oxidized metallacycles was probed using electrochemical experiments, UV-Vis-NIR absorption, EPR spectroscopy and DFT calculations, confirming ligand radical formation. Exciton coupling of the intense near-infrared (NIR) ligand radical intervalence charge transfer (IVCT) bands provided further confirmation of the geometric and electronic structures in solution.
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Affiliation(s)
| | - Magali Allain
- Univ Angers, CNRS, MOLTECH-ANJOU, 2 bd Lavoisier, 49000, Angers, France) E-mails: E-mails
| | - Gregory A MacNeil
- Department of Chemistry, Simon Fraser University, Burnaby, V5A 1S6, Canada
| | - Vincent Carré
- LCP-A2MC, FR 3624, Université de Lorraine, ICPM, 1 Bd Arago, 57078, Metz Cedex 03, France
| | - Frédéric Aubriet
- LCP-A2MC, FR 3624, Université de Lorraine, ICPM, 1 Bd Arago, 57078, Metz Cedex 03, France
| | - Daniel B Leznoff
- Department of Chemistry, Simon Fraser University, Burnaby, V5A 1S6, Canada
| | - Marc Sallé
- Univ Angers, CNRS, MOLTECH-ANJOU, 2 bd Lavoisier, 49000, Angers, France) E-mails: E-mails
| | - Sébastien Goeb
- Univ Angers, CNRS, MOLTECH-ANJOU, 2 bd Lavoisier, 49000, Angers, France) E-mails: E-mails
| | - Tim Storr
- Department of Chemistry, Simon Fraser University, Burnaby, V5A 1S6, Canada
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73
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Norjmaa G, Maréchal J, Ujaque G. Origin of the Rate Acceleration in the C-C Reductive Elimination from Pt(IV)-complex in a [Ga 4 L 6 ] 12- Supramolecular Metallocage. Chemistry 2021; 27:15973-15980. [PMID: 34545974 PMCID: PMC9293218 DOI: 10.1002/chem.202102250] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Indexed: 12/29/2022]
Abstract
The reductive elimination on [(Me3 P)2 Pt(MeOH)(CH3 )3 ]+ , 2P, complex performed in MeOH solution and inside a [Ga4 L6 ]12- metallocage are computationally analysed by mean of QM and MD simulations and compared with the mechanism of gold parent systems previously reported [Et3 PAu(MeOH)(CH3 )2 ]+ , 2Au. The comparative analysis between the encapsulated Au(III) and Pt(IV)-counterparts shows that there are no additional solvent MeOH molecules inside the cavity of the metallocage for both systems. The Gibbs energy barriers for the 2P reductive elimination calculated at DFT level are in good agreement with the experimental values for both environments. The effect of microsolvation and encapsulation on the rate acceleration are evaluated and shows that the latter is far more relevant, conversely to 2Au. Energy decomposition analysis indicates that the encapsulation is the main responsible for most of the energy barrier reduction. Microsolvation and encapsulation effects are not equally contributing for both metal systems and consequently, the reasons of the rate acceleration are not the same for both metallic systems despite the similarity between them.
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Affiliation(s)
- Gantulga Norjmaa
- Departament de Química and Centro de Innovación en Química Avanzada (ORFEO-CINQA)Universitat Autònoma de Barcelona08193Cerdanyola del VallesBarcelonaCataloniaSpain
| | - Jean‐Didier Maréchal
- Departament de Química and Centro de Innovación en Química Avanzada (ORFEO-CINQA)Universitat Autònoma de Barcelona08193Cerdanyola del VallesBarcelonaCataloniaSpain
| | - Gregori Ujaque
- Departament de Química and Centro de Innovación en Química Avanzada (ORFEO-CINQA)Universitat Autònoma de Barcelona08193Cerdanyola del VallesBarcelonaCataloniaSpain
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74
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Liu J, Sheng J, Shao L, Zheng Q, Li W, Chen X, Mao L, Wang M. Tetraphenylethylene‐Featured Fluorescent Supramolecular Nanoparticles for Intracellular Trafficking of Protein Delivery and Neuroprotection. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202111213] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Ji Liu
- Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Analytical Chemistry for Living Biosystems Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
| | - Jinhan Sheng
- Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Analytical Chemistry for Living Biosystems Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Leihou Shao
- Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Analytical Chemistry for Living Biosystems Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
| | - Qizhen Zheng
- Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Analytical Chemistry for Living Biosystems Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
| | - Wenting Li
- Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Analytical Chemistry for Living Biosystems Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Xianghan Chen
- Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Analytical Chemistry for Living Biosystems Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Lanqun Mao
- College of Chemistry Beijing Normal University Beijing 100875 China
| | - Ming Wang
- Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Analytical Chemistry for Living Biosystems Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
- University of Chinese Academy of Sciences Beijing 100049 China
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75
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Pachisia S, Gupta R. Supramolecular catalysis: the role of H-bonding interactions in substrate orientation and activation. Dalton Trans 2021; 50:14951-14966. [PMID: 34617524 DOI: 10.1039/d1dt02131a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Hydrogen bonding plays significant roles in various biological processes during substrate orientation and binding and therefore assists in assorted organic transformations. However, replicating the intricate selection of hydrogen bonds, as observed in nature, in synthetic complexes has met with only limited success. Despite this fact, recent times have seen the emergence of several notable examples where hydrogen bonds have been introduced in synthetic complexes. A few such examples have also illustrated the substantial role played by the hydrogen bonds in influencing and often controlling the catalytic outcome. This perspective presents selected examples illustrating the significance of hydrogen bonds offered by the coordination and the organometallic complexes that aid in providing the desired orientation to a substrate adjacent to a catalytic metal center and remarkably assisting in the catalysis.
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Affiliation(s)
- Sanya Pachisia
- Department of Chemistry, University of Delhi, Delhi - 110007, India.
| | - Rajeev Gupta
- Department of Chemistry, University of Delhi, Delhi - 110007, India.
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76
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Virovets AV, Peresypkina E, Scheer M. Structural Chemistry of Giant Metal Based Supramolecules. Chem Rev 2021; 121:14485-14554. [PMID: 34705437 DOI: 10.1021/acs.chemrev.1c00503] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The review presents a bird-eye view on the state of research in the field of giant nonbiological discrete metal complexes and ions of nanometer size, which are structurally characterized by means of single-crystal X-ray diffraction, using the crystal structure as a common key feature. The discussion is focused on the main structural features of the metal clusters, the clusters containing compact metal oxide/hydroxide/chalcogenide core, ligand-based metal-organic cages, and supramolecules as well as on the aspects related to the packing of the molecules or ions in the crystal and the methodological aspects of the single-crystal neutron and X-ray diffraction of these compounds.
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Affiliation(s)
- Alexander V Virovets
- Institute of Inorganic Chemistry, University of Regensburg, Universitaetsstr. 31, 93053 Regensburg, Germany
| | - Eugenia Peresypkina
- Institute of Inorganic Chemistry, University of Regensburg, Universitaetsstr. 31, 93053 Regensburg, Germany
| | - Manfred Scheer
- Institute of Inorganic Chemistry, University of Regensburg, Universitaetsstr. 31, 93053 Regensburg, Germany
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77
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Zhao J, Zhou Z, Li G, Stang PJ, Yan X. Light-emitting self-assembled metallacages. Natl Sci Rev 2021; 8:nwab045. [PMID: 34691672 PMCID: PMC8288187 DOI: 10.1093/nsr/nwab045] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 02/13/2021] [Accepted: 02/13/2021] [Indexed: 11/26/2022] Open
Abstract
Coordination-driven self-assembly of metallacages has garnered significant interest because of their 3D layout and cavity-cored nature. The well-defined, highly tunable metallacage structures render them particularly attractive for investigating the properties of luminophores, as well as for inducing novel photophysical characters that enable widespread applications. In this review, we summarize the recent advances in synthetic methodologies for light-emitting metallacages, and highlight some representative applications of these metallacages. In particular, we focus on the favorable photophysical properties—including high luminescence efficiency in various physical states, good modularity in photophysical properties and stimulus responsiveness—that have resulted from incorporating ligands displaying aggregation-induced emission (AIE) into metallacages. These features show that the synergy between carrying out coordination-driven self-assembly and using luminophores with novel photophysical characteristics like AIE could stimulate the development of supramolecular luminophores for applications in fields as diverse as sensing, biomedicine and catalysis.
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Affiliation(s)
- Jun Zhao
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Zhixuan Zhou
- Department of Chemistry, University of Utah, Salt Lake City, UT 84112, USA
| | - Guangfeng Li
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Peter J Stang
- Department of Chemistry, University of Utah, Salt Lake City, UT 84112, USA
| | - Xuzhou Yan
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai 200240, China
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78
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Chang X, Wang Z, Wang G, Liu T, Lin S, Fang Y. Perylene Bisimide-Cored Supramolecular Coordination Complexes: Interplay between Ensembles, Excited State Processes, and Aggregation Behaviors. Chemistry 2021; 27:14876-14885. [PMID: 34462989 DOI: 10.1002/chem.202101970] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Indexed: 12/17/2022]
Abstract
Manipulating the optical properties of fluorescent species is challenging owing to complicated and tedious synthetic works. Herein, the photophysical properties of perylene bisimide (PBI) were effectively tuned by varying the geometrical arrangement of PBI moieties within supramolecular coordination complexes (SCCs), where a PBI-based dicycle (2) and a trigonal prism (3) were generated via using a typical 90° Pt(II) reagent, cis-(PEt3 )2 Pt(OTf)2 -based coordination-driven self-assembly approach. The ligand, an ortho-tetrapyridiyl-PBI (1), exhibits a moderate fluorescence quantum yield (∼13 %) and efficient inter-system crossing (ISC). 2, however, is much more emissive with a fluorescence quantum yield of ∼41 %, and the relevant ISC process is significantly hindered. The fluorescence quantum yield of 3 is merely ∼6 % due to the observed symmetry-breaking charge separation (SB-CS), which turns to triplet state upon charge recombination. Interestingly, 3 could be fully transformed into 2 by simply adding a suitable amount of a 90° Pt(II)-based neutral triangle. Moreover, 2 tends to form discrete dimers both in crystal and solution states, but 3 does not show the property. Therefore, controlling geometrical arrangement of fluorophores through coordination-driven self-assembly could be taken as another effective way to tune their excited state relaxation pathways and construct high-performance optical molecular materials, which generally have to be prepared via organic synthesis.
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Affiliation(s)
- Xingmao Chang
- Key Laboratory of Applied Surface andColloid Chemistry, Ministry of Education), School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, P. R. China
| | - Zhaolong Wang
- Key Laboratory of Applied Surface andColloid Chemistry, Ministry of Education), School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, P. R. China
| | - Gang Wang
- Key Laboratory of Applied Surface andColloid Chemistry, Ministry of Education), School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, P. R. China
| | - Taihong Liu
- Key Laboratory of Applied Surface andColloid Chemistry, Ministry of Education), School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, P. R. China
| | - Simin Lin
- Key Laboratory of Applied Surface andColloid Chemistry, Ministry of Education), School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, P. R. China
| | - Yu Fang
- Key Laboratory of Applied Surface andColloid Chemistry, Ministry of Education), School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, P. R. China
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79
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Zhou J, Yang T, Peng B, Shan B, Ding M, Zhang K. Structural Water Molecules Confined in Soft and Hard Nanocavities as Bright Color Emitters. ACS PHYSICAL CHEMISTRY AU 2021; 2:47-58. [PMID: 36855578 PMCID: PMC9718307 DOI: 10.1021/acsphyschemau.1c00020] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Molecules confined in the nanocavity and nanointerface exhibit rich, unique physicochemical properties, e.g., the chromophore in the β-barrel can of green fluorescent protein (GFP) exhibits tunable bright colors. However, the physical origin of their photoluminescence (PL) emission remains elusive. To mimic the microenvironment of the GFP protein scaffold at the molecule level, two groups of nanocavities were created by molecule self-assembly using organic chromophores and by organic functionalization of mesoporous silica, respectively. We provide strong evidence that structural water molecules confined in these nanocavities are color emitters with a universal formula of {X+·(OH-·H2O)·(H2O) n-1}, in which X is hydrated protons (H3O+) or protonated amino (NH3 +) groups as an anchoring point, and that the efficiency of PL is strongly dependent on the stability of the main emitter centers of the structural hydrated hydroxide complex (OH-·H2O), which is a key intermediate to mediate electron transfer dominated by proton transfer at confined nanospace. Further controlled experiments and combined characterizations by time-resolved steady-state and ultrafast transient optical spectroscopy unveil an unusual multichannel radiative and/or nonradiative mechanism dominated by quantum transient states with a distinctive character of topological excitation. The finding of this work underscores the pivotal role of structurally bound H2O in regulating the PL efficiency of aggregation-induced emission luminogens and GFP.
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Affiliation(s)
- Jiafeng Zhou
- Shanghai
Key Laboratory of Green Chemistry and Chemical Processes, College
of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
| | - Taiqun Yang
- Shanghai
Key Laboratory of Green Chemistry and Chemical Processes, College
of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
| | - Bo Peng
- Shanghai
Key Laboratory of Green Chemistry and Chemical Processes, College
of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
| | - Bingqian Shan
- Shanghai
Key Laboratory of Green Chemistry and Chemical Processes, College
of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
| | - Meng Ding
- Shanghai
Key Laboratory of Green Chemistry and Chemical Processes, College
of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
| | - Kun Zhang
- Shanghai
Key Laboratory of Green Chemistry and Chemical Processes, College
of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China,Laboratoire
de chimie, Ecole Normale Supérieure de Lyon, Institut de Chimie
de Lyon, Université de Lyon, 46 Allée d’italie, 69364 Lyon cedex 07, France,Shandong
Provincial Key Laboratory of Chemical Energy Storage and Novel Cell
Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, Shandong, P. R. China,
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80
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Xu J, Zhang Y, Zhang J, Li Y, Li B, Qiu H, Zhang P, Yin S. Constructing a triangular metallacycle with salen-Al and its application to a catalytic cyanosilylation reaction. Chem Commun (Camb) 2021; 57:10399-10402. [PMID: 34542548 DOI: 10.1039/d1cc04577f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A triangular metallosalen-based metallacycle was constructed in quantitative yield by the self-assembly of a 180° bis(pyridyl)salen-Al complex and a 60° diplatinum(II) acceptor in a 1 : 1 stoichiometric ratio. This metallacycle was then successfully used to cyanosilylate a wide range of benzaldehydes with trimethylsilyl cyanide.
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Affiliation(s)
- Jun Xu
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou 311121, P. R. China.
| | - Yueyue Zhang
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou 311121, P. R. China.
| | - Jinjin Zhang
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou 311121, P. R. China.
| | - Yang Li
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou 311121, P. R. China.
| | - Bo Li
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou 311121, P. R. China.
| | - Huayu Qiu
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou 311121, P. R. China.
| | - Pengfei Zhang
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou 311121, P. R. China.
| | - Shouchun Yin
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou 311121, P. R. China.
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81
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Designing narcissistic self-sorting terpyridine moieties with high coordination selectivity for complex metallo-supramolecules. Commun Chem 2021; 4:136. [PMID: 36697787 PMCID: PMC9814872 DOI: 10.1038/s42004-021-00577-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Accepted: 09/07/2021] [Indexed: 01/28/2023] Open
Abstract
Coordination-driven self-assembly is a powerful approach for the construction of metallosupramolecules, but designing coordination moieties that can drive the self-assembly with high selectivity and specificity remains a challenge. Here we report two ortho-modified terpyridine ligands that form head-to-tail coordination complexes with Zn(II). Both complexes show narcissistic self-sorting behaviour. In addition, starting from these ligands, we obtain two sterically congested multitopic ligands and use them to construct more complex metallo-supramolecules hexagons. Because of the non-coaxial structural restrictions in the rotation of terpyridine moieties, these hexagonal macrocycles can hierarchically self-assemble into giant cyclic nanostructures via edge-to-edge stacking, rather than face-to-face stacking. Our design of dissymmetrical coordination moieties from congested coordination pairs show remarkable self-assembly selectivity and specificity.
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82
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Su L, Shu L, Shi B, Hang Y, Huang J. Construction of Enhanced Photostability Anthraquinone-Type Nanovesicles Based on a Novel Two-Step Supramolecular Assembly Strategy and Their Application on Multiband Laser-Responsive Composites. ACS APPLIED MATERIALS & INTERFACES 2021; 13:43458-43472. [PMID: 34464092 DOI: 10.1021/acsami.1c14352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The photostability and dispersity under aggregation states always become an obstacle for the development of small-molecular organic dye (SMOD) composites. Herein, a novel supramolecular assembly strategy with a two-step assembly method is implemented to encapsulate SMODs for improving their photostability and acquiring uniformly dispersed nanoaggregates in aqueous solution. By the novel assembly strategy, photodegradation rates of the anthraquinone-type dyes can decrease significantly, and the stability of dispersed nanoassembly bodies can be improved in solution. Based on the two-step supramolecular assembly strategy, a new kind of aqueous processing composite system can be developed for preparing multiband laser-responsive devices and in situ healing of optical composite films. This two-step supramolecular assembly strategy can provide a new template and reference for improving the defects of SMODs and fabricating high-performance optical devices.
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Affiliation(s)
- Linlin Su
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China
| | - Lan Shu
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China
| | - Binbin Shi
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China
| | - Yixiao Hang
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China
| | - Jin Huang
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China
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83
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Tuo W, Xu Y, Fan Y, Li J, Qiu M, Xiong X, Li X, Sun Y. Biomedical applications of Pt(II) metallacycle/metallacage-based agents: From mono-chemotherapy to versatile imaging contrasts and theranostic platforms. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.214017] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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84
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Rotthowe N, Linseis M, Vogelsang L, Orth N, Ivanović-Burmazović I, Winter RF. A "Pretender" Croconate-Bridged Macrocyclic Tetraruthenium Complex: Sizable Redox Potential Splittings despite Electronically Insulated Divinylphenylene Diruthenium Entities. Molecules 2021; 26:molecules26175232. [PMID: 34500666 PMCID: PMC8433806 DOI: 10.3390/molecules26175232] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 08/24/2021] [Accepted: 08/24/2021] [Indexed: 11/17/2022] Open
Abstract
Careful optimization of the reaction conditions provided access to the particularly small tetraruthenium macrocycle 2Ru2Ph-Croc, which is composed out of two redox-active divinylphenylene-bridged diruthenium entities {Ru}-1,4-CH=CH-C6H4-CH=CH-{Ru} (Ru2Ph; {Ru} = Ru(CO)Cl(PiPr3)2) and two likewise redox-active and potentially non-innocent croconate linkers. According to single X-ray diffraction analysis, the central cavity of 2Ru2Ph-Croc is shielded by the bulky PiPr3 ligands, which come into close contact. Cyclic voltammetry revealed two pairs of split anodic waves in the weakly ion pairing CH2Cl2/NBu4BArF24 (BArF24 = [B{C6H3(CF3)2-3,5}4]− electrolyte, while the third and fourth waves fall together in CH2Cl2/NBu4PF6. The various oxidized forms were electrogenerated and scrutinized by IR and UV/Vis/NIR spectroscopy. This allowed us to assign the individual oxidations to the metal-organic Ru2Ph entities within 2Ru2Ph-Croc, while the croconate ligands remain largely uninvolved. The lack of specific NIR bands that could be assigned to intervalence charge transfer (IVCT) in the mono- and trications indicates that these mixed-valent species are strictly charge-localized. 2Ru2Ph-Croc is hence an exemplary case, where stepwise IR band shifts and quite sizable redox splittings between consecutive one-electron oxidations would, on first sight, point to electronic coupling, but are exclusively due to electrostatic and inductive effects. This makes 2Ru2Ph-Croc a true “pretender”.
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Affiliation(s)
- Nils Rotthowe
- Fachbereich Chemie der Universität Konstanz, Universitätsstraße 31, 78464 Konstanz, Germany; (N.R.); (M.L.); (L.V.)
- Department of Chemistry, University of Southern California, LJS 251, 840 Downey Way, Los Angeles, CA 90089, USA
| | - Michael Linseis
- Fachbereich Chemie der Universität Konstanz, Universitätsstraße 31, 78464 Konstanz, Germany; (N.R.); (M.L.); (L.V.)
| | - Lars Vogelsang
- Fachbereich Chemie der Universität Konstanz, Universitätsstraße 31, 78464 Konstanz, Germany; (N.R.); (M.L.); (L.V.)
| | - Nicole Orth
- Department Chemie und Pharmazie, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 1, 91058 Erlangen, Germany; (N.O.); (I.I.-B.)
| | - Ivana Ivanović-Burmazović
- Department Chemie und Pharmazie, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 1, 91058 Erlangen, Germany; (N.O.); (I.I.-B.)
- Department Chemie, Ludwigs-Maximilians-Universität München, Butenandtstr. 5-13, Haus D, 81377 München, Germany
| | - Rainer F. Winter
- Fachbereich Chemie der Universität Konstanz, Universitätsstraße 31, 78464 Konstanz, Germany; (N.R.); (M.L.); (L.V.)
- Correspondence: ; Tel.: +49-(7531)-88-5355
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85
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Shao L, Hu X, Sikligar K, Baker GA, Atwood JL. Coordination Polymers Constructed from Pyrogallol[4]arene-Assembled Metal-Organic Nanocapsules. Acc Chem Res 2021; 54:3191-3203. [PMID: 34329553 DOI: 10.1021/acs.accounts.1c00275] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Coordination polymers, commonly known as infinite crystalline lattices, are versatile networks and have diverse potential applications in the fields of gas storage, molecular separation, catalysis, optics, and drug delivery, among other areas. Secondary building blocks, mainly incorporating rigid polydentate organic linkers and metal ions or clusters, are commonly employed to construct coordination polymers. Recently, novel building blocks such as coordination polyhedra have been utilized as metal nodes to fabricate coordination polymers. Benefiting from the rigid porous structure of the coordination polyhedron, prefabricated designer "pores" can be incorporated in this type of coordinate polymer. In this Account, coordination polymers built by pyrogallol[4]arene-assembled metal-organic nanocapsules are summarized. This class of metal-organic nanocapsule possesses the following advantages that make them excellent candidates in the construction of coordination polymers: (i) Various geometrical shapes with different volumes of the inner cavities can be obtained from these capsules. Among them, the two main categories illustrated are dimeric and hexameric capsules, which comprise two and six pyrogallol[4]arenes units, respectively. (ii) A wide range of possible metal ions ranging from main group metals to transition metals and even lanthanides have been demonstrated to seam the capsules. Therefore, these coordination polymers can be endowed with fascinating functionalities such as magnetism, semiconductivity, luminescence, and radioactivity. (iii) Up to 24 metal ions have been successfully embedded on the surface of the nanocapsule, each a potential reaction site in the construction of coordination polymers, opening up pathways for the formation of multidimensional frameworks.In this Account, we focus primarily on the synthesis and the structural information on pyrogallol[4]arene-derived coordination polymers. Coordination polymers can be formed by introducing linkers with two coordination sites, using pyrogallol[4]arenes with coordination sites on the tail, or even via metal ions cross-linking with each other. Machine learning was recently developed to help us predict and screen the structures of the coordination polymers. With single crystal analysis in hand, detailed structural information provides a molecular-level perspective. Significantly, following the formation of coordination polymers, the overall shape and structure of the discrete metal-organic nanocapsules remains essentially unchanged, with full retention of the prefabricated pores. If a rigid linker is used to connect capsules, more than one lattice void with different volumes can be found within the framework. Thus, molecules with different sizes could potentially be encapsulated within these coordination polymers. In addition, flexible ligands can also be employed as linkers. For example, polymers have been employed as large linkers that transform the crystalline coordination polymers into polymer matrices, paving the way toward the synthesis of advanced functional materials. Overall, coordination polymers constructed with pyrogallol[4]arene-assembled metal-organic nanocapsules show wide diversity and tunability in structure and fascinating properties, as well as the promise of built-in functionality in the future.
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Affiliation(s)
- Li Shao
- Department of Chemistry, University of Missouri, Columbia, Missouri 65211, United States
| | - Xiangquan Hu
- Department of Chemistry, University of Missouri, Columbia, Missouri 65211, United States
| | - Kanishka Sikligar
- Department of Chemistry, University of Missouri, Columbia, Missouri 65211, United States
| | - Gary A. Baker
- Department of Chemistry, University of Missouri, Columbia, Missouri 65211, United States
| | - Jerry L. Atwood
- Department of Chemistry, University of Missouri, Columbia, Missouri 65211, United States
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86
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Kumar U, Ramakrishna B, Varghese J, Vidhyapriya P, Sakthivel N, Manimaran B. Self-Assembled Manganese(I)-Based Selenolato-Bridged Tetranuclear Metallorectangles: Host-Guest Interaction, Anticancer, and CO-Releasing Studies. Inorg Chem 2021; 60:13284-13298. [PMID: 34357751 DOI: 10.1021/acs.inorgchem.1c01636] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Supramolecular one-step self-assembly of dimanganese decacarbonyl, diaryl diselenide, and linear dipyridyl ligands (L = pyrazine (pz), 4,4'-bipyridine (bpy), and trans-1,2-bis(4-pyridyl)ethylene (bpe)) has resulted in the formation of selenolato-bridged manganese(I)-based metallorectangles. The synthesis of tetranuclear Mn(I)-based metallorectangles [{(CO)3Mn(μ-SeR)2Mn(CO)3}2(μ-L)2] (1-6) was facilitated by the oxidative addition of diaryl diselenide to dimanganese decacarbonyl with the simultaneous coordination of linear bidentate pyridyl linker in an orthogonal fashion. Formation of metallorectangles 1-6 was ascertained using IR, UV-vis, NMR spectroscopic techniques, and elemental analyses. The molecular mass of compounds 2, 4, and 6 were determined by ESI-mass spectrometry. Solid-state structural elucidation of 2, 3, and 6 by single-crystal X-ray diffraction methods revealed a rectangular framework wherein selenolato-bridges and pyridyl ligands define the shorter and longer edges, respectively. Also, the guest binding capability of metallorectangles 3 and 5 with different aromatic guests was studied using UV-vis absorption and emission spectrophotometric titration methods that affirmed strong host-guest binding interactions. The formation of the host-guest complex between metallorectangle 3 and pyrene has been explicitly corroborated by the single-crystal X-ray structure of 3•pyrene. Moreover, select metallorectangles 1-4 and 6 were studied to explore their anticancer activity, while CO-releasing ability of metallorectangle 2 was further appraised using equine heart myoglobin assay.
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Affiliation(s)
- Udit Kumar
- Department of Chemistry, Pondicherry University, Puducherry 605014, India
| | - Buthanapalli Ramakrishna
- Division of Chemistry, School of Advanced Sciences, Vellore Institute of Technology, Chennai Campus, Vandalur-Kelambakkam Road, Tamil Nadu 600127, India
| | - Jisna Varghese
- Department of Chemistry, Pondicherry University, Puducherry 605014, India
| | | | - Natarajan Sakthivel
- Department of Biotechnology, Pondicherry University, Puducherry 605014, India
| | - Bala Manimaran
- Department of Chemistry, Pondicherry University, Puducherry 605014, India
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87
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Ang PL, Nguyen VH, Yip JHK. A dynamic tetranuclear gold(i)-cyclophane - gold(i)-centred chirality and fluxionality arising from an intramolecular shift of Au-S bonds. Dalton Trans 2021; 50:11422-11428. [PMID: 34346461 DOI: 10.1039/d1dt01984h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A tetranuclear gold(i) complex [Au4(μ-PAnP)2(μ-L)2] (PAnP = 9,10-bis(diphenylphosphino)anthracene and L = benzene-1,2-dithiolate) has been synthesized and characterised by multinuclear NMR and X-ray crystallography. The molecule has a cyclophane-like structure which can be considered to be composed of two [Au2(μ-PAnP)(μ-L)] units held together by Au-S bonds and aurophilic interactions (Au-Au = 3.0712(2) Å). L acts as a chelating and bridging ligand with one of its S atoms bonded to two Au ions as sulfonium ions and there are two Au2S2 cores on each side of the cyclophane. A sulfur atom in each Au2S2 core is a chiral sulfonium ion, being bonded to two chemically distinct Au ions. Two Au ions are bonded to four atoms (2S, P and Au) in an asymmetric environment, making them a rare example of gold(i)-centred chirality. The two Au2S2 cores have RAu, RS and SAu, SS configurations, and the chiralities of the sulfonium ion and the gold ion are correlated. Variable-temperature NMR spectroscopy showed that the metallacyclophane undergoes rapid exchange in solution. A bond shift mechanism involving simultaneous cleavage and formation of Au-S bonds is proposed for the exchange.
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Affiliation(s)
- Pau Lin Ang
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Singapore.
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88
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Xu J, Wang J, Ye J, Jiao J, Liu Z, Zhao C, Li B, Fu Y. Metal-Coordinated Supramolecular Self-Assemblies for Cancer Theranostics. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:e2101101. [PMID: 34145984 PMCID: PMC8373122 DOI: 10.1002/advs.202101101] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 04/25/2021] [Indexed: 05/07/2023]
Abstract
Metal-coordinated supramolecular nanoassemblies have recently attracted extensive attention as materials for cancer theranostics. Owing to their unique physicochemical properties, metal-coordinated supramolecular self-assemblies can bridge the boundary between traditional inorganic and organic materials. By tailoring the structural components of the metal ions and binding ligands, numerous multifunctional theranostic nanomedicines can be constructed. Metal-coordinated supramolecular nanoassemblies can modulate the tumor microenvironment (TME), thus facilitating the development of TME-responsive nanomedicines. More importantly, TME-responsive organic-inorganic hybrid nanomaterials can be constructed in vivo by exploiting the metal-coordinated self-assembly of a variety of functional ligands, which is a promising strategy for enhancing the tumor accumulation of theranostic molecules. In this review, recent advancements in the design and fabrication of metal-coordinated supramolecular nanomedicines for cancer theranostics are highlighted. These supramolecular compounds are classified according to the order in which the coordinated metal ions appear in the periodic table. Furthermore, the prospects and challenges of metal-coordinated supramolecular self-assemblies for both technical advances and clinical translation are discussed. In particular, the superiority of TME-responsive nanomedicines for in vivo coordinated self-assembly is elaborated, with an emphasis on strategies that enhance the accumulation of functional components in tumors for an ideal theranostic outcome.
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Affiliation(s)
- Jiating Xu
- Key Laboratory of Forest Plant EcologyMinistry of EducationCollege of ChemistryChemical Engineering and Resource UtilizationNortheast Forestry UniversityHarbin150040P. R. China
| | - Jun Wang
- Key Laboratory of Forest Plant EcologyMinistry of EducationCollege of ChemistryChemical Engineering and Resource UtilizationNortheast Forestry UniversityHarbin150040P. R. China
| | - Jin Ye
- Key Laboratory of Forest Plant EcologyMinistry of EducationCollege of ChemistryChemical Engineering and Resource UtilizationNortheast Forestry UniversityHarbin150040P. R. China
| | - Jiao Jiao
- Key Laboratory of Forest Plant EcologyMinistry of EducationCollege of ChemistryChemical Engineering and Resource UtilizationNortheast Forestry UniversityHarbin150040P. R. China
| | - Zhiguo Liu
- Key Laboratory of Forest Plant EcologyMinistry of EducationCollege of ChemistryChemical Engineering and Resource UtilizationNortheast Forestry UniversityHarbin150040P. R. China
| | - Chunjian Zhao
- Key Laboratory of Forest Plant EcologyMinistry of EducationCollege of ChemistryChemical Engineering and Resource UtilizationNortheast Forestry UniversityHarbin150040P. R. China
| | - Bin Li
- Key Laboratory of Forest Plant EcologyMinistry of EducationCollege of ChemistryChemical Engineering and Resource UtilizationNortheast Forestry UniversityHarbin150040P. R. China
| | - Yujie Fu
- Key Laboratory of Forest Plant EcologyMinistry of EducationCollege of ChemistryChemical Engineering and Resource UtilizationNortheast Forestry UniversityHarbin150040P. R. China
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89
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Yin Y, Chen Z, Li RH, Yuan C, Shao TY, Wang K, Tan H, Sun Y. Ligand-Triggered Platinum(II) Metallacycle with Mechanochromic and Vapochromic Responses. Inorg Chem 2021; 60:9387-9393. [PMID: 33881317 DOI: 10.1021/acs.inorgchem.1c00233] [Citation(s) in RCA: 50] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Supramolecular coordination complexes with solid-state stimuli-responsive characteristics are highly desirable but are rarely reported. Herein, we describe two coordination-driven self-assembled monoanthracene or dianthracene-based hexagonal metallacycles by subtle structure modification. Notably, the dianthracene-containing hexagon 1 exhibits tricolor mechanochromic and vapochromic characteristics, while the monoanthracene-containing hexagon 4 does not show obvious changes toward mechanical force. Further studies have indicated that changes in hexagon 1, especially the ulterior anthracene of hexagon 1 in the molecular stacking through intermolecular interactions toward external stimuli, are responsible for the above behavioral differences. Furthermore, the present work also demonstrates a novel light-harvesting strategy for achieving high-contrast mechanochromic fluorescence involving solid-state energy transfer from hexagon 1 to an organic carbazole derivant 6 without mechanofluorochromism or tetraphenylethylene derivant 7 exhibiting inconspicuous mechanofluorochromism.
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Affiliation(s)
- Ya Yin
- Hubei Key Laboratory of Catalysis and Materials Science, College of Chemistry and Material Sciences, South-Central University for Nationalities, Wuhan 430074, PR China
| | - Zhao Chen
- Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang 330013, PR China
| | - Run-Hao Li
- Hubei Key Laboratory of Catalysis and Materials Science, College of Chemistry and Material Sciences, South-Central University for Nationalities, Wuhan 430074, PR China
| | - Chang Yuan
- Key Laboratory of Theoretical and Computational Photochemistry, Ministry of Education, Beijing Normal University, Beijing 100875, PR China
| | - Tian-Yin Shao
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, PR China
| | - Kai Wang
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, PR China
| | - Hongwei Tan
- Key Laboratory of Theoretical and Computational Photochemistry, Ministry of Education, Beijing Normal University, Beijing 100875, PR China
| | - Yue Sun
- Hubei Key Laboratory of Catalysis and Materials Science, College of Chemistry and Material Sciences, South-Central University for Nationalities, Wuhan 430074, PR China
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90
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Zhang L, Lin YJ, Li ZH, Fraser Stoddart J, Jin GX. Coordination-Driven Selective Formation of D 2 Symmetric Octanuclear Organometallic Cages. Chemistry 2021; 27:9524-9528. [PMID: 33882176 DOI: 10.1002/chem.202101204] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Indexed: 11/09/2022]
Abstract
The coordination-driven self-assembly of organometallic half-sandwich iridium(III)- and rhodium(III)-based building blocks with asymmetric ambidentate pyridyl-carboxylate ligands is described. Despite the potential for obtaining a statistical mixture of multiple products, D2 symmetric octanuclear cages were formed selectively by taking advantage of the electronic effects emanating from the two types of chelating sites - (O,O') and (N,N') - on the tetranuclear building blocks. The metal sources and the lengths of bridging ligands influence the selectivity of the self-assembly. Experimental observations, supported by computational studies, suggest that the D2 symmetric cages are the thermodynamically favored products. Overall, the results underline the importance of electronic effects on the selectivity of coordination-driven self-assembly, and demonstrate that asymmetric ambidentate ligands can be used to control the design of discrete supramolecular coordination complexes.
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Affiliation(s)
- Long Zhang
- State Key Laboratory of Molecular Engineering of Polymers, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai, 200433, P.R. China.,Department of Chemistry, Northwestern University, Evanston, Illinois, 60208, United States
| | - Yue-Jian Lin
- State Key Laboratory of Molecular Engineering of Polymers, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai, 200433, P.R. China
| | - Zhen-Hua Li
- State Key Laboratory of Molecular Engineering of Polymers, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai, 200433, P.R. China
| | - J Fraser Stoddart
- Department of Chemistry, Northwestern University, Evanston, Illinois, 60208, United States.,School of Chemistry, University of New South Wales, Sydney, NSW 2052, Australia.,Stoddart Institute of Molecular Science, Department of Chemistry, Zhejiang University, Hangzhou, 310021, P.R. China.,ZJU-Hangzhou Global Scientific and Technological Innovation Center, Hangzhou, 311215, P.R. China
| | - Guo-Xin Jin
- State Key Laboratory of Molecular Engineering of Polymers, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai, 200433, P.R. China
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91
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Liu Z, Zhang Z, Li T, Zhao W. Three-Dimensional Diradical Metallacage with an Open-Shell Ground State. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00285] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Zhaoyue Liu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan 410082, China
| | - Zhonghui Zhang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan 410082, China
| | - Tao Li
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan 410082, China
| | - Wanxiang Zhao
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan 410082, China
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92
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Li RJ, Fadaei-Tirani F, Scopelliti R, Severin K. Tuning the Size and Geometry of Heteroleptic Coordination Cages by Varying the Ligand Bent Angle. Chemistry 2021; 27:9439-9445. [PMID: 33998736 DOI: 10.1002/chem.202101057] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Indexed: 12/13/2022]
Abstract
Spherical assemblies of the type [Pdn L2n ]2n+ can be obtained from PdII salts and curved N-donor ligands, L. It is well established that the bent angle, α, of the ligand is a decisive factor in the self-assembly process, with larger angles leading to complexes with a higher nuclearity, n. Herein, we report heteroleptic coordination cages of the type [Pdn Ln L'n ]2n+ , for which a similar correlation between the ligand bent angle and the nuclearity is observed. Tetranuclear cages were obtained by combining [Pd(CH3 CN)4 ](BF4 )2 with 1,3-di(pyridin-3-yl)benzene and ligands featuring a bent angle of α=120°. The use of a dipyridyl ligand with α=149° led to the formation of a hexanuclear complex with a trigonal prismatic geometry; for linear ligands, octanuclear assemblies of the type [Pd8 L8 L'8 ]16+ were obtained. The predictable formation of heteroleptic PdII cages from 1,3-di(pyridin-3-yl)benzene and different dipyridyl ligands is evidence that there are entire classes of heteroleptic cage structures that are privileged from a thermodynamic point of view.
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Affiliation(s)
- Ru-Jin Li
- Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland
| | - Farzaneh Fadaei-Tirani
- Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland
| | - Rosario Scopelliti
- Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland
| | - Kay Severin
- Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland
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93
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Liu G, Yang Z, Zhou M, Wang Y, Yuan D, Zhao D. Heterogeneous postassembly modification of zirconium metal-organic cages in supramolecular frameworks. Chem Commun (Camb) 2021; 57:6276-6279. [PMID: 34075947 DOI: 10.1039/d1cc01606g] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
We report a heterogeneous postassembly modification (PAM) to synthesize a zirconium metal-organic cage decorated with acrylate functional groups, ZrT-1-AA, which cannot be synthesized by direct coordination-driven self-assembly owing to the reactivity and instability of the ligand. The PAM process is carried out in a single-crystal-to-single-crystal transformation under mild reaction conditions with high efficiency, which is confirmed by ESI-TOF-MS and 1H NMR. In addition, ZrT-1-AA is crosslinked into shaped materials to demonstrate its potential applications. The proposed PAM strategy sheds light on the development of Zr-MOCs decorated with reactive functional groups, whose introduction is challenging or impossible via direct self-assembly.
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Affiliation(s)
- Guoliang Liu
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore 117585, Singapore. and State Key Laboratory of Materials-Oriented Chemical Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Ziqi Yang
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore 117585, Singapore.
| | - Mi Zhou
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China.
| | - Yuxiang Wang
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore 117585, Singapore.
| | - Daqiang Yuan
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China.
| | - Dan Zhao
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore 117585, Singapore.
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94
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Guo Z, Li G, Wang H, Zhao J, Liu Y, Tan H, Li X, Stang PJ, Yan X. Drum-like Metallacages with Size-Dependent Fluorescence: Exploring the Photophysics of Tetraphenylethylene under Locked Conformations. J Am Chem Soc 2021; 143:9215-9221. [PMID: 34105960 DOI: 10.1021/jacs.1c04288] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Materials with aggregation-induced emission (AIE) properties are of growing interest due to their widespread applications. AIEgens, such as tetraphenylethylene units, display varying emission behaviors during their conformational changes. However, the structure-property relationships of the intermediate conformations have rarely been explored. Herein, we show that the conformational restriction on TPE units can affect the structural relaxation in the excited state and the resulting photophysical behaviors. Specifically, three metallacages of different sizes were prepared via the coordination-driven self-assembly of a TPE-based tetrapyridyl donor with length-increasing Pt(II) acceptors. While the metallacages share similar scaffolds, they exhibit a trend of red-shifted fluorescence and attenuated quantum yield with the increase of their sizes. Furthermore, spectroscopic and computational studies together with a control experiment were conducted, revealing that the degree of cage tension imposed on the excited-state conformational relaxation of TPE moieties resulted in their distinct photophysical properties. The precise control of conformation holds promise as a strategy for understanding the AIE mechanism as well as optimizing the photophysical behaviors of materials on the platform of supramolecular coordination complexes.
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Affiliation(s)
- Zhewen Guo
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Guangfeng Li
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Heng Wang
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518055, P. R. China
| | - Jun Zhao
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Yuhang Liu
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Hongwei Tan
- Department of Chemistry, Beijing Normal University, Beijing 100050 P. R. China
| | - Xiaopeng Li
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518055, P. R. China
| | - Peter J Stang
- Department of Chemistry, University of Utah, 315 South 1400 East, Room 2020, Salt Lake City, Utah 84112, United States
| | - Xuzhou Yan
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
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95
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Sub‐50 nm Supramolecular Nanohybrids with Active Targeting Corona for Image‐Guided Solid Tumor Treatment and Metastasis Inhibition. ADVANCED FUNCTIONAL MATERIALS 2021. [DOI: 10.1002/adfm.202103272] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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96
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Hierarchical self-assembly of crown ether based metal-carbene cages into multiple stimuli-responsive cross-linked supramolecular metallogel. Sci China Chem 2021. [DOI: 10.1007/s11426-021-9977-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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97
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Chen LJ, Humphrey SJ, Zhu JL, Zhu FF, Wang XQ, Wang X, Wen J, Yang HB, Gale PA. A Two-Dimensional Metallacycle Cross-Linked Switchable Polymer for Fast and Highly Efficient Phosphorylated Peptide Enrichment. J Am Chem Soc 2021; 143:8295-8304. [PMID: 34042430 PMCID: PMC8193630 DOI: 10.1021/jacs.0c12904] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
![]()
The selective and
efficient capture of phosphopeptides is critical
for comprehensive and in-depth phosphoproteome analysis. Here we report
a new switchable two-dimensional (2D) supramolecular polymer that
serves as an ideal platform for the enrichment of phosphopeptides.
A well-defined, positively charged metallacycle incorporated into
the polymer endows the resultant polymer with a high affinity for
phosphopeptides. Importantly, the stimuli-responsive nature of the
polymer facilitates switchable binding affinity of phosphopeptides,
thus resulting in an excellent performance in phosphopeptide enrichment
and separation from model proteins. The polymer has a high enrichment
capacity (165 mg/g) and detection sensitivity (2 fmol), high enrichment
recovery (88%), excellent specificity, and rapid enrichment and separation
properties. Additionally, we have demonstrated the capture of phosphopeptides
from the tryptic digest of real biosamples, thus illustrating the
potential of this polymeric material in phosphoproteomic studies.
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Affiliation(s)
- Li-Jun Chen
- School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia
| | - Sean J Humphrey
- School of Life and Environmental Sciences, The University of Sydney, Sydney, NSW 2006, Australia
| | - Jun-Long Zhu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Chang-Kung Chuang Institute, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
| | - Fan-Fan Zhu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Chang-Kung Chuang Institute, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
| | - Xu-Qing Wang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Chang-Kung Chuang Institute, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
| | - Xiang Wang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials & College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
| | - Jin Wen
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials & College of Materials Science and Engineering, Donghua University, Shanghai 201620, China.,Institute of Theoretical Chemistry, Faculty of Vienna, University of Vienna, Währinger Straße 17, A-1090 Vienna, Austria
| | - Hai-Bo Yang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Chang-Kung Chuang Institute, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
| | - Philip A Gale
- School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia.,The University of Sydney Nano Institute (Sydney Nano), The University of Sydney, Sydney, NSW 2006, Australia
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98
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Hierarchical communication of chirality for aromatic oligoamide sequences. Nat Commun 2021; 12:2659. [PMID: 33976219 PMCID: PMC8113567 DOI: 10.1038/s41467-021-22984-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Accepted: 04/07/2021] [Indexed: 11/24/2022] Open
Abstract
The communication of chirality at a molecular and supramolecular level is the fundamental feature capable of transmitting and amplifying chirality information. Yet, the limitation of one-step communication mode in many artificial systems has precluded the ability of further processing the chirality information. Here, we report the chirality communication of aromatic oligoamide sequences within the interpenetrated helicate architecture in a hierarchical manner, specifically, the communication is manipulated by three sequential steps: (i) coordination, (ii) concentration, and (iii) ion stimulus. Such approach enables the information to be implemented progressively and reversibly to different levels. Furthermore, the chiral information on the side chains can be accumulated and transferred to the helical backbones of the sequences, resulting in that one of ten possible diastereoisomers of the interpenetrated helicate is finally selected. The circular dichroism experiments with a mixture of chiral and achiral ligands demonstrate a cooperative behavior of these communications, leading to amplification of chiral information. Communication of chirality at a molecular level is the fundamental for transmitting chirality information but one-step communication modes in many artificial systems limits further processing the chirality information. Here, the authors report chirality communication of aromatic oligoamide sequences within interpenetrated helicate architecture in a hierarchical manner.
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99
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Edelbrock AN, Clemons TD, Chin SM, Roan JJW, Bruckner EP, Álvarez Z, Edelbrock JF, Wek KS, Stupp SI. Superstructured Biomaterials Formed by Exchange Dynamics and Host-Guest Interactions in Supramolecular Polymers. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:2004042. [PMID: 33898187 PMCID: PMC8061421 DOI: 10.1002/advs.202004042] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 12/21/2020] [Indexed: 05/12/2023]
Abstract
Dynamic and reversible assembly of molecules is ubiquitous in the hierarchical superstructures of living systems and plays a key role in cellular functions. Recent work from the laboratory reported on the reversible formation of such superstructures in systems of peptide amphiphiles conjugated to oligonucleotides and electrostatically complimentary peptide sequences. Here, a supramolecular system is reported upon where exchange dynamics and host-guest interactions between β-cyclodextrin and adamantane on peptide amphiphiles lead to superstructure formation. Superstructure formation with bundled nanoribbons generates a mechanically robust hydrogel with a highly porous architecture that can be 3D printed. Functionalization of the porous superstructured material with a biological signal results in a matrix with significant in vitro bioactivity toward neurons that could be used as a supramolecular model to design novel biomaterials.
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Affiliation(s)
- Alexandra N. Edelbrock
- Department of Biomedical EngineeringNorthwestern UniversityEvanstonIL60208USA
- Simpson Querrey InstituteNorthwestern UniversityChicagoIL60611USA
| | - Tristan D. Clemons
- Simpson Querrey InstituteNorthwestern UniversityChicagoIL60611USA
- Department of ChemistryNorthwestern UniversityEvanstonIL60208USA
| | - Stacey M. Chin
- Department of ChemistryNorthwestern UniversityEvanstonIL60208USA
| | - Joshua J. W. Roan
- Department of Materials Science and EngineeringNorthwestern UniversityEvanstonIL60208USA
| | - Eric P. Bruckner
- Department of Materials Science and EngineeringNorthwestern UniversityEvanstonIL60208USA
| | - Zaida Álvarez
- Simpson Querrey InstituteNorthwestern UniversityChicagoIL60611USA
- Department of MedicineNorthwestern UniversityChicagoIL60611USA
| | - Jack F. Edelbrock
- Simpson Querrey InstituteNorthwestern UniversityChicagoIL60611USA
- Department of Materials Science and EngineeringNorthwestern UniversityEvanstonIL60208USA
- Department of MedicineNorthwestern UniversityChicagoIL60611USA
| | - Kristen S. Wek
- Department of Materials Science and EngineeringNorthwestern UniversityEvanstonIL60208USA
| | - Samuel I. Stupp
- Department of Biomedical EngineeringNorthwestern UniversityEvanstonIL60208USA
- Simpson Querrey InstituteNorthwestern UniversityChicagoIL60611USA
- Department of ChemistryNorthwestern UniversityEvanstonIL60208USA
- Department of Materials Science and EngineeringNorthwestern UniversityEvanstonIL60208USA
- Department of MedicineNorthwestern UniversityChicagoIL60611USA
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100
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Li RJ, Pezzato C, Berton C, Severin K. Light-induced assembly and disassembly of polymers with Pd n L 2n -type network junctions. Chem Sci 2021; 12:4981-4984. [PMID: 34163745 PMCID: PMC8179541 DOI: 10.1039/d1sc00127b] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Revised: 03/18/2021] [Accepted: 02/19/2021] [Indexed: 12/30/2022] Open
Abstract
Polymers containing Pd n L2n complexes as network junctions were obtained by reaction of poly(ethylene glycol)-linked N-donor ligands with Pd2+. The addition of a metastable state photoacid renders the networks light sensitive, and gel-sol transitions can be achieved by irradiation with light. The inverse process, a light-induced sol-gel transition, was realized by using a molecularly defined Pd complex as an acid-sensitive reservoir for Pd2+. Upon irradiation, Pd2+ ions are released, allowing the formation of an acid-resistant polymer network. Both the gel-sol and the sol-gel transitions are reversed in the dark.
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Affiliation(s)
- Ru-Jin Li
- Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL) 1015 Lausanne Switzerland
| | - Cristian Pezzato
- Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL) 1015 Lausanne Switzerland
| | - Cesare Berton
- Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL) 1015 Lausanne Switzerland
| | - Kay Severin
- Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL) 1015 Lausanne Switzerland
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