1
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Walker SE, Chant W, Thoonen S, Tuck KL, Turner DR. Stabilization of Lantern-Type Metal-Organic Cages (MOCs) by Protective Control of Ligand Exchange Rates. Chemistry 2024; 30:e202400072. [PMID: 38366309 DOI: 10.1002/chem.202400072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Accepted: 02/16/2024] [Indexed: 02/18/2024]
Abstract
Self-assembling systems in nature display remarkable complexity with assemblies of different sub-units to generate functional species. Synthetic analogues of such systems are a challenge, often requiring the ability to bias distributions that are under thermodynamic assembly control. Using lantern-type MOCs (metal-organic cages) as a prototypical self-assembling system, herein we explore the role that steric bulk plays in controlling the exchange rate of ligands in paddlewheel-based assemblies, and thus the stability of cages, in competitive self-assembling scenarios. The effective lifetime of the lantern-type MOCs varies over an order of magnitude depending on the steric bulk proximal to the metal nodes with lifetimes of the cages ranging from tens of minutes to several hours. The bulk of the coordinating solvents likewise reduces the rate of ligand exchange, and thus yields longer-lived species. Understanding this subtle effect has implications for controlling the stability of complex assemblies in competitive environments with implications for guest release and application.
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Affiliation(s)
- Samuel E Walker
- School of Chemistry, Monash University, Clayton, VIC, 3800, Australia
| | - William Chant
- School of Chemistry, Monash University, Clayton, VIC, 3800, Australia
| | - Shannon Thoonen
- School of Chemistry, Monash University, Clayton, VIC, 3800, Australia
| | - Kellie L Tuck
- School of Chemistry, Monash University, Clayton, VIC, 3800, Australia
| | - David R Turner
- School of Chemistry, Monash University, Clayton, VIC, 3800, Australia
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2
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Wu K, Benchimol E, Baksi A, Clever GH. Non-statistical assembly of multicomponent [Pd 2ABCD] cages. Nat Chem 2024; 16:584-591. [PMID: 38243023 DOI: 10.1038/s41557-023-01415-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Accepted: 12/07/2023] [Indexed: 01/21/2024]
Abstract
Self-assembled hosts, inspired by biological receptors and catalysts, show application potential in sustainable synthesis, energy conversion and medicine. Implementing multiple functionalities in the form of distinguishable building blocks, however, is difficult without risking narcissistic self-sorting or a statistical mess. Here we report a systematic series of integratively self-assembled heteroleptic cages in which two square-planar PdII cations are bridged by four different bis-pyridyl ligands, A, B, C and D, via synergistic effects to exclusively form a single isomer-the lantern-shaped cage [Pd2ABCD]. This self-sorting goal-forming just one out of 55 possible structures-is reached under full thermodynamic control and can be realized progressively (by combining progenitors, such as [Pd2A2C2] with [Pd2B2D2]), directly from ligands and PdII cations or by mixing all four corresponding homoleptic cages. The rational design of complex multicomponent assemblies that enables the modular incorporation of diverse chemical moieties will advance their applicability in functional nanosystems.
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Affiliation(s)
- Kai Wu
- Department of Chemistry and Chemical Biology, TU Dortmund University, Dortmund, Germany
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, LIFM, IGCME, School of Chemistry, Sun Yat-Sen University, Guangzhou, China
| | - Elie Benchimol
- Department of Chemistry and Chemical Biology, TU Dortmund University, Dortmund, Germany
| | - Ananya Baksi
- Department of Chemistry and Chemical Biology, TU Dortmund University, Dortmund, Germany
- Department of Chemistry, Jadavpur University, Kolkata, India
| | - Guido H Clever
- Department of Chemistry and Chemical Biology, TU Dortmund University, Dortmund, Germany.
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3
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Yang Y, Li H, Shi Y, Wu Y, Jing X, Duan C. Modifying the Oxidative Potentials of Imines in a Dye Loaded Capsule for Photocatalytic Cyclization with Hydrogen Evolution. Angew Chem Int Ed Engl 2024; 63:e202319605. [PMID: 38217331 DOI: 10.1002/anie.202319605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 01/09/2024] [Accepted: 01/09/2024] [Indexed: 01/15/2024]
Abstract
Modifying redox potential of substrates and intermediates to balance pairs of redox steps are important stages for multistep photosynthesis but faced marked challenges. Through co-clathration of iridium photosensitizer and imine substrate within one packet of a metal-organic capsule to shift the redox potentials of substrate, herein, we reported a multiphoton enzymatic strategy for the generation of heterocycles by intramolecular C-X hydrogen evolution cross-couplings. The cage facilitated a pre-equilibrium substrate-involving clathrate that cathodic shifts the oxidation potential of the substrate-dye-host ternary complex and configuration inversion of substrate via spatial constraints in the confined space. The new two photon excitation strategy enabled the precise control of the multistep electron transfer between each pair (photosensitizer, substrate and the capsule), endowing the catalytic system proceeding smoothly with an enzymatic fashion. Three kinds of 2-subsituted (-OH, -NH2 , and -SH) imines and N-aryl enamines all give the corresponding cyclization products efficiently under visible light irradiation, demonstrating the promising of the microenvironment driven thermodynamic activation in the host-dye-substrate ternary for synergistic combination of multistep photocatalytic transformations.
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Affiliation(s)
- Yang Yang
- School of Chemistry, Dalian University of Technology, Dalian, 116024, China
| | - Hanning Li
- School of Chemistry, Dalian University of Technology, Dalian, 116024, China
| | - Youpeng Shi
- School of Chemistry, Dalian University of Technology, Dalian, 116024, China
| | - Yuchen Wu
- School of Chemistry, Dalian University of Technology, Dalian, 116024, China
| | - Xu Jing
- School of Chemistry, Dalian University of Technology, Dalian, 116024, China
| | - Chunying Duan
- State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing, 210093, China
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4
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Wang S, Ye X, Yang Z, Li A, Sheng X, Wang Q, Jia C. Guest-Facilitated Heteroleptic Assembly of Helical Anionocages Enables Reversible Chirality Modulation. Angew Chem Int Ed Engl 2024; 63:e202319552. [PMID: 38179815 DOI: 10.1002/anie.202319552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 01/04/2024] [Accepted: 01/04/2024] [Indexed: 01/06/2024]
Abstract
We report a novel strategy for reversible modulation of the supramolecular chirality based on guest-facilitated heteroleptic assembly of helical anionocages. Two triple-stranded helical anionocages including a chiral cage 1 (A2 L1 3 ) and a crown ether functionalized achiral cage 2 (A2 L2 3 ) were synthesized by anion coordination of bis-monourea-based ligands and PhPO3 2- . Both cages exhibited favorable binding with tetraethylammonium TEA+ and cobaltocenium Cob+ (endo-guest, bound in the cavity). Additionally, cage 2 could reversibly release and recapture the guests through binding the exo-guest potassium ions (K+ ) in the crown ethers and subsequent removal of the K+ by [2,2,2]-cryptand. The circular dichroism (CD) spectrum of cage 1 was not significantly affected by guest encapsulation or mixing with the "empty" cage 2. However, in the presence of both cage 2 and an endo-guest/exo-guest, the Cotton effects were reversed at 391 nm and significantly enhanced at 310 nm. This observation was attributed to the guest-facilitated formation of heteroleptic cages that enabled effective chirality transfer from the chiral to the achiral ligands. The CD changes induced by K+ could be fully reversed by removing it with [2,2,2]-cryptand. Sequential addition and removal of K+ allowed reversible modulation of the chirality for at least 10 cycles without significant attenuation.
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Affiliation(s)
- Shanshan Wang
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Xi'an Key Laboratory of Functional Supramolecular Structure and Materials, College of Chemistry and Materials Science, Northwest University, 710069, Xi'an, China
| | - Xuanli Ye
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Xi'an Key Laboratory of Functional Supramolecular Structure and Materials, College of Chemistry and Materials Science, Northwest University, 710069, Xi'an, China
| | - Zaiwen Yang
- College of Chemistry and Chemical Engineering, Xi'an University of Science and Technology, 710054, Xi'an, China
| | - Anyang Li
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Xi'an Key Laboratory of Functional Supramolecular Structure and Materials, College of Chemistry and Materials Science, Northwest University, 710069, Xi'an, China
| | - Xinsong Sheng
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Xi'an Key Laboratory of Functional Supramolecular Structure and Materials, College of Chemistry and Materials Science, Northwest University, 710069, Xi'an, China
| | - Qiangqiang Wang
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Xi'an Key Laboratory of Functional Supramolecular Structure and Materials, College of Chemistry and Materials Science, Northwest University, 710069, Xi'an, China
| | - Chuandong Jia
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Xi'an Key Laboratory of Functional Supramolecular Structure and Materials, College of Chemistry and Materials Science, Northwest University, 710069, Xi'an, China
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5
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Prajapati D, Bhandari P, Hickey N, Mukherjee PS. Water-Soluble Pd 6L 3 Molecular Bowl for Separation of Phenanthrene from a Mixture of Isomeric Aromatic Hydrocarbons. Inorg Chem 2023. [PMID: 37263966 DOI: 10.1021/acs.inorgchem.3c01156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Phenanthrene is a high-value raw material in chemical industries. Separation of phenanthrene from isomeric anthracene continues to be a big challenge in the industry due to their very similar physical properties. Herein, we report the self-assembly of a water-soluble molecular bowl (TB) from a phenothiazine-based unsymmetrical terapyridyl ligand (L) and a cis-blocked 90° Pd(II) acceptor. TB featured an unusual bowl-like topology, with a wide rim diameter and a hydrophobic inner cavity fenced by the aromatic rings of the ligand. The above-mentioned features of TB allow it to bind polyaromatic hydrocarbons in its confined cavity. TB shows a higher affinity for phenanthrene over its isomer anthracene in water, which enables it to separate phenanthrene with ∼93% purity from an equimolar mixture of phenanthrene and anthracene. TB is also able to extract pyrene with around ∼90% purity from an equimolar mixture of coronene, perylene, and pyrene. Moreover, TB can be reused for several cycles without significant degradation in its performance as an extracting agent. This clean strategy of separation of phenanthrene and pyrene from a mixture of hydrophobic hydrocarbons by aqueous extraction is noteworthy.
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Affiliation(s)
- Dharmraj Prajapati
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
| | - Pallab Bhandari
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
| | - Neal Hickey
- Center of Excellence in Biocrystallography, Department of Chemical and Pharmaceuticals Sciences, University of Trieste, Trieste 34127, Italy
| | - Partha Sarathi Mukherjee
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
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6
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Li M, Shi YQ, Gan X, Su L, Liang J, Wu H, You Y, Che M, Su P, Wu T, Zhang Z, Zhang W, Yao LY, Wang P, Xie TZ. Coordination-Driven Tetragonal Prismatic Cage and the Investigation on Host-Guest Complexation. Inorg Chem 2023; 62:4393-4398. [PMID: 36892430 DOI: 10.1021/acs.inorgchem.2c03999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/10/2023]
Abstract
A coordination-driven host has been reported to encapsulate guests by noncovalent interactions. Herein, we present the design and synthesis of a new type of prism combining porphyrin and terpyridine moieties with a long cavity. The prism host can contain bisite or monosite guests through axial coordination binding of porphyrin and aromatic π interactions of terpyridine. The ligands and prismatic complexes were characterized by electrospray ionization mass spectrometry (ESI-MS), TWIM-MS, NMR spectrometry, and single-crystal X-ray diffraction analysis. The guest encapsulation was investigated through ESI-MS, NMR spectrometry, and transient absorption spectroscopy analysis. The binding constant and stability were determined by UV-Vis spectrometry and gradient tandem MS (gMS2) techniques. Based on the prism, a selectively confined condensation reaction was also performed and detected by NMR spectrometry. This study provides a new type of porphyrin- and terpyridine-based host that could be used for the detection of pyridyl- and amine-contained molecules and confined catalysis.
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Affiliation(s)
- Miao Li
- Institute of Environmental Research at Greater Area, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, China
| | - Yu-Qi Shi
- Institute of Environmental Research at Greater Area, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, China
| | - Xinye Gan
- Institute of Environmental Research at Greater Area, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, China
| | - Longbin Su
- Institute of Environmental Research at Greater Area, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, China
| | - Jialin Liang
- Institute of Environmental Research at Greater Area, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, China
| | - Huiqi Wu
- Institute of Environmental Research at Greater Area, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, China
| | - Yiting You
- Institute of Environmental Research at Greater Area, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, China
| | - Meizi Che
- Institute of Environmental Research at Greater Area, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, China
| | - Peiyang Su
- Institute of Environmental Research at Greater Area, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, China
| | - Tun Wu
- Institute of Environmental Research at Greater Area, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, China
| | - Zhe Zhang
- Institute of Environmental Research at Greater Area, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, China
| | - Wei Zhang
- School of Physics and Materials Science, Guangzhou University, Guangzhou 510006, China
| | - Liao-Yuan Yao
- MOE Key Laboratory of Cluster Science, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, China
| | - Pingshan Wang
- Institute of Environmental Research at Greater Area, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, China
| | - Ting-Zheng Xie
- Institute of Environmental Research at Greater Area, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, China
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7
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Su P, Wei B, Guo C, Hu Y, Tang R, Zhang S, He C, Lin J, Yu X, Chen Z, Li H, Wang H, Li X. Metallo-Supramolecular Hexagonal Wreath with Four Switchable States Based on a pH-Responsive Tridentate Ligand. J Am Chem Soc 2023; 145:3131-3145. [PMID: 36696285 DOI: 10.1021/jacs.2c12504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
In biological systems, many biomacromolecules (e.g., heme proteins) are capable of switching their states reversibly in response to external stimuli, endowing these natural architectures with a high level of diversity and functionality. Although tremendous efforts have been made to advance the complexity of artificial supramolecules, it remains a challenge to construct metallo-supramolecular systems that can carry out reversible interconversion among multiple states. Here, a pH-responsive tridentate ligand, 2,6-di(1H-imidazole-2-yl)pyridine (H2DAP), is incorporated into the multitopic building block for precise construction of giant metallo-supramolecular hexagonal wreaths with three metal ions, i.e., Fe(II), Co(II), and Ni(II), through coordination-driven self-assembly. In particular, a Co-linked wreath enables in situ reversible interconversion among four states in response to pH and oxidant/reductant with highly efficient conversion without losing structural integrity. During the state interconversion cycles, the physical properties of the assembled constructs are finely tuned, including the charge states of the backbone, valency of metal ions, and paramagnetic/diamagnetic features of complexes. Such discrete wreath structures with a charge-switchable backbone further facilitate layer-by-layer assembly of metallo-supramolecules on the substrate.
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Affiliation(s)
- Pingru Su
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, Guangdong, China.,School of Biomedical Engineering, Shenzhen University, Shenzhen 518060, China
| | - Biaowen Wei
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, Guangdong, China.,School of Biomedical Engineering, Shenzhen University, Shenzhen 518060, China
| | - Chenxing Guo
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, Guangdong, China.,School of Biomedical Engineering, Shenzhen University, Shenzhen 518060, China
| | - Yaqi Hu
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, Guangdong, China
| | - Runxu Tang
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, Guangdong, China
| | - Shunran Zhang
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, Guangdong, China
| | - Chuanxin He
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, Guangdong, China
| | - Jing Lin
- School of Biomedical Engineering, Shenzhen University, Shenzhen 518060, China
| | - Xiujun Yu
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, Guangdong, China
| | - Zhi Chen
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, Guangdong, China
| | - Haiyang Li
- Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Heng Wang
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, Guangdong, China
| | - Xiaopeng Li
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, Guangdong, China.,Shenzhen University General Hospital, Shenzhen University Clinical Medical Academy, Shenzhen 518055, Guangdong, China
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8
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Jiang Y, Zeng Z, Yao J, Guan Y, Jia P, Zhao X, Xu L. Treatment of Alzheimer's disease with small-molecule photosensitizers. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.107966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
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9
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Hong M, Kim M, Yoon J, Lee SH, Baik MH, Lim MH. Excited-State Intramolecular Hydrogen Transfer of Compact Molecules Controls Amyloid Aggregation Profiles. JACS AU 2022; 2:2001-2012. [PMID: 36186552 PMCID: PMC9516708 DOI: 10.1021/jacsau.2c00281] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/08/2022] [Revised: 07/11/2022] [Accepted: 07/27/2022] [Indexed: 06/16/2023]
Abstract
Developing chemical methodologies to directly modify harmful biomolecules affords the mitigation of their toxicity by persistent changes in their properties and structures. Here we report compact photosensitizers composed of the anthraquinone (AQ) backbone that undergo excited-state intramolecular hydrogen transfer, effectively oxidize amyloidogenic peptides, and, subsequently, alter their aggregation pathways. Density functional theory calculations showed that the appropriate position of the hydroxyl groups in the AQ backbone and the consequent intramolecular hydrogen transfer can facilitate the energy transfer to triplet oxygen. Biochemical and biophysical investigations confirmed that these photoactive chemical reagents can oxidatively vary both metal-free amyloid-β (Aβ) and metal-bound Aβ, thereby redirecting their on-pathway aggregation into off-pathway as well as disassembling their preformed aggregates. Moreover, the in vivo histochemical analysis of Aβ species produced upon photoactivation of the most promising candidate demonstrated that they do not aggregate into oligomeric or fibrillar aggregates in the brain. Overall, our combined computational and experimental studies validate a light-based approach for designing small molecules, with minimum structural complexity, as chemical reagents targeting and controlling amyloidogenic peptides associated with neurodegenerative disorders.
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Affiliation(s)
- Mannkyu Hong
- Department
of Chemistry, Korea Advanced Institute of
Science and Technology (KAIST), Daejeon 34141, Republic of Korea
- Center
for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, Republic
of Korea
| | - Mingeun Kim
- Department
of Chemistry, Korea Advanced Institute of
Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Jiwon Yoon
- Department
of Biological Sciences, Korea Advanced Institute
of Science and Technology (KAIST), Daejeon 34141, Republic
of Korea
| | - Seung-Hee Lee
- Department
of Biological Sciences, Korea Advanced Institute
of Science and Technology (KAIST), Daejeon 34141, Republic
of Korea
| | - Mu-Hyun Baik
- Department
of Chemistry, Korea Advanced Institute of
Science and Technology (KAIST), Daejeon 34141, Republic of Korea
- Center
for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, Republic
of Korea
| | - Mi Hee Lim
- Department
of Chemistry, Korea Advanced Institute of
Science and Technology (KAIST), Daejeon 34141, Republic of Korea
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10
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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] [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 Biology TU Dortmund University Otto-Hahn Straße 6 44227 Dortmund Germany
| | - Christoph Drechsler
- Department of Chemistry and Chemical Biology TU Dortmund University Otto-Hahn Straße 6 44227 Dortmund Germany
| | - Yen‐Ting Chen
- Center of Molecular Spectroscopy and Simulation of Solvent-driven Processes (ZEMOS) Ruhr-University Bochum 44801 Bochum Germany
| | - Guido H. Clever
- Department of Chemistry and Chemical Biology TU Dortmund University Otto-Hahn Straße 6 44227 Dortmund Germany
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11
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Ganta S, Borter JH, Drechsler C, Holstein JJ, Schwarzer D, Clever GH. Photoinduced host-to-guest electron transfer in a self-assembled coordination cage. Org Chem Front 2022; 9:5485-5493. [DOI: 10.1039/d2qo01339h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Accepted: 08/24/2022] [Indexed: 11/21/2022]
Abstract
Light–powered host–guest charge transfer (HGCT) is shown for a coordination cage based on electron-rich phenothiazines, containing an anthraquinone acceptor as guest. Transient absorption spectroscopy and spectroelectrochemistry data is presented.
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Affiliation(s)
- Sudhakar Ganta
- Department of Chemistry and Chemical Biology, TU Dortmund University, Otto-Hahn Straße 6, 44227, Dortmund, Germany
| | - Jan-Hendrik Borter
- Max-Planck-Institute for Multidisciplinary Sciences, Am Fassberg 11, 37077 Göttingen, Germany
| | - Christoph Drechsler
- Department of Chemistry and Chemical Biology, TU Dortmund University, Otto-Hahn Straße 6, 44227, Dortmund, Germany
| | - Julian J. Holstein
- Department of Chemistry and Chemical Biology, TU Dortmund University, Otto-Hahn Straße 6, 44227, Dortmund, Germany
| | - Dirk Schwarzer
- Max-Planck-Institute for Multidisciplinary Sciences, Am Fassberg 11, 37077 Göttingen, Germany
| | - Guido H. Clever
- Department of Chemistry and Chemical Biology, TU Dortmund University, Otto-Hahn Straße 6, 44227, Dortmund, Germany
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12
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Walker SE, Boer SA, Malcomson T, Paterson MJ, Tuck KL, Turner DR. Steric control of sorting regimes in self-assembled cages. Chem Commun (Camb) 2021; 57:12456-12459. [PMID: 34755718 DOI: 10.1039/d1cc05610g] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Control of self-sorting regimes is achieved through adjustment of steric interactions in self-assembled coordination cages. The self-assembly regime of dynamic mixtures of heteroleptic cages is followed by HPLC to show that statistical or biased distributions can be selectively obtained, including isolation of a single heteroleptic species.
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Affiliation(s)
- Samuel E Walker
- School of Chemistry, Monash University, Clayton, VIC 3800, Australia.
| | - Stephanie A Boer
- School of Chemistry, Monash University, Clayton, VIC 3800, Australia.
| | - Thomas Malcomson
- Department of Chemistry, Manchester University, Manchester, M13 9PL, UK
| | - Martin J Paterson
- Institute of Chemical Sciences, Heriot-Watt University, Edinburgh, EH14 4AS, UK
| | - Kellie L Tuck
- School of Chemistry, Monash University, Clayton, VIC 3800, Australia.
| | - David R Turner
- School of Chemistry, Monash University, Clayton, VIC 3800, Australia.
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13
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Keller S, Hankache J, Yushchenko O, Lawson Daku LM, Sun Q, Ding J, Decurtins S, Vauthey E, Häner R, Hauser A, Liu S. Intramolecular Charge‐Transfer Dynamics in Benzodifuran‐Based Triads. Helv Chim Acta 2021. [DOI: 10.1002/hlca.202100099] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Stephan Keller
- Department of Chemistry Biochemistry and Pharmaceutical Sciences University of Bern Freiestrasse 3 CH-3012 Bern Switzerland
| | - Jihane Hankache
- Department of Physical Chemistry University of Geneva 30 Quai Ernest Ansermet CH-1211 Geneva Switzerland
| | - Oleksandr Yushchenko
- Department of Physical Chemistry University of Geneva 30 Quai Ernest Ansermet CH-1211 Geneva Switzerland
| | - Latévi Max Lawson Daku
- Department of Physical Chemistry University of Geneva 30 Quai Ernest Ansermet CH-1211 Geneva Switzerland
| | - Qinchao Sun
- Department of Physical Chemistry University of Geneva 30 Quai Ernest Ansermet CH-1211 Geneva Switzerland
| | - Jie Ding
- Department of Physical Chemistry University of Geneva 30 Quai Ernest Ansermet CH-1211 Geneva Switzerland
| | - Silvio Decurtins
- Department of Chemistry Biochemistry and Pharmaceutical Sciences University of Bern Freiestrasse 3 CH-3012 Bern Switzerland
| | - Eric Vauthey
- Department of Physical Chemistry University of Geneva 30 Quai Ernest Ansermet CH-1211 Geneva Switzerland
| | - Robert Häner
- Department of Chemistry Biochemistry and Pharmaceutical Sciences University of Bern Freiestrasse 3 CH-3012 Bern Switzerland
| | - Andreas Hauser
- Department of Physical Chemistry University of Geneva 30 Quai Ernest Ansermet CH-1211 Geneva Switzerland
| | - Shi‐Xia Liu
- Department of Chemistry Biochemistry and Pharmaceutical Sciences University of Bern Freiestrasse 3 CH-3012 Bern Switzerland
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14
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Madhu M, Ramakrishnan R, Vijay V, Hariharan M. Free Charge Carriers in Homo-Sorted π-Stacks of Donor-Acceptor Conjugates. Chem Rev 2021; 121:8234-8284. [PMID: 34133137 DOI: 10.1021/acs.chemrev.1c00078] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Inspired by the high photoconversion efficiency observed in natural light-harvesting systems, the hierarchical organization of molecular building blocks has gained impetus in the past few decades. Particularly, the molecular arrangement and packing in the active layer of organic solar cells (OSCs) have garnered significant attention due to the decisive role of the nature of donor/acceptor (D/A) heterojunctions in charge carrier generation and ultimately the power conversion efficiency. This review focuses on the recent developments in emergent optoelectronic properties exhibited by self-sorted donor-on-donor/acceptor-on-acceptor arrangement of covalently linked D-A systems, highlighting the ultrafast excited state dynamics of charge transfer and transport. Segregated organization of donors and acceptors promotes the delocalization of photoinduced charges among the stacks, engendering an enhanced charge separation lifetime and percolation pathways with ambipolar conductivity and charge carrier yield. Covalently linking donors and acceptors ensure a sufficient D-A interface and interchromophoric electronic coupling as required for faster charge separation while providing better control over their supramolecular assemblies. The design strategies to attain D-A conjugate assemblies with optimal charge carrier generation efficiency, the scope of their application compared to state-of-the-art OSCs, current challenges, and future opportunities are discussed in the review. An integrated overview of rational design approaches derived from the comprehension of underlying photoinduced processes can pave the way toward superior optoelectronic devices and bring in new possibilities to the avenue of functional supramolecular architectures.
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Affiliation(s)
- Meera Madhu
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram, Vithura, Thiruvananthapuram, Kerala, India 695551
| | - Remya Ramakrishnan
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram, Vithura, Thiruvananthapuram, Kerala, India 695551
| | - Vishnu Vijay
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram, Vithura, Thiruvananthapuram, Kerala, India 695551
| | - Mahesh Hariharan
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram, Vithura, Thiruvananthapuram, Kerala, India 695551
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15
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Pullen S, Tessarolo J, Clever GH. Increasing structural and functional complexity in self-assembled coordination cages. Chem Sci 2021; 12:7269-7293. [PMID: 34163819 PMCID: PMC8171321 DOI: 10.1039/d1sc01226f] [Citation(s) in RCA: 148] [Impact Index Per Article: 49.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Accepted: 04/26/2021] [Indexed: 12/18/2022] Open
Abstract
Progress in metallo-supramolecular chemistry creates potential to synthesize functional nano systems and intelligent materials of increasing complexity. In the past four decades, metal-mediated self-assembly has produced a wide range of structural motifs such as helicates, grids, links, knots, spheres and cages, with particularly the latter ones catching growing attention, owing to their nano-scale cavities. Assemblies serving as hosts allow application as selective receptors, confined reaction environments and more. Recently, the field has made big steps forward by implementing dedicated functionality, e.g. catalytic centres or photoswitches to allow stimuli control. Besides incorporation in homoleptic systems, composed of one type of ligand, desire arose to include more than one function within the same assembly. Inspiration comes from natural enzymes that congregate, for example, a substrate recognition site, an allosteric regulator element and a reaction centre. Combining several functionalities without creating statistical mixtures, however, requires a toolbox of sophisticated assembly strategies. This review showcases the implementation of function into self-assembled cages and devises strategies to selectively form heteroleptic structures. We discuss first examples resulting from a combination of both principles, namely multicomponent multifunctional host-guest complexes, and their potential in application in areas such as sensing, catalysis, and photo-redox systems.
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Affiliation(s)
- Sonja Pullen
- Department of Chemistry and Chemical Biology, TU Dortmund University Otto-Hahn-Straße 6 44227 Dortmund Germany
- Homogeneous, Supramolecular and Bio-Inspired Catalysis, Van't Hoff Institute for Molecular Sciences, University of Amsterdam Science Park 904 1098 XH Amsterdam The Netherlands
| | - Jacopo Tessarolo
- Department of Chemistry and Chemical Biology, TU Dortmund University Otto-Hahn-Straße 6 44227 Dortmund Germany
| | - Guido H Clever
- Department of Chemistry and Chemical Biology, TU Dortmund University Otto-Hahn-Straße 6 44227 Dortmund Germany
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16
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Huang G, Li J, Deng Z, Li J, Sun S, Xu L, Dang L, Li MD. Room-Temperature Stable Noncovalent Charge-Transfer Dianion Biradical to Produce Singlet Oxygen by Visible or Near-Infrared Light Photoexcitation. J Phys Chem Lett 2021; 12:4306-4312. [PMID: 33913708 DOI: 10.1021/acs.jpclett.1c00759] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Noncovalent interaction between small molecules can generate a charge-transfer (CT) state, achieving the effect of a conjugated large molecule as well as a transition-metal complex. Herein, we demonstrate a room-temperature stable dianion biradical conveniently produced by noncovalent intermolecular CT interaction between anthraquinone (AQ) and potassium tert-butoxide (KOtBu). Essentially, CT from KOtBu to AQ boosts absorption bands from the UV to visible and near-infrared (NIR) range, enabling AQ-KOtBu to have new absorption bands around 400, 550, and 900 nm. The absorption bands of AQ-KOtBu are dramatically enhanced after blue-to-green or NIR light excitation. Interestingly, both ground state AQ-KOtBu (C(1)) and photoexcited AQ-KOtBu (C(2)) are quenched by oxygen to produce singlet oxygen. Furthermore, C(1) can be photoactivated by purged nitrogen in solution, and C(2) can be regenerated after the photoexcitation and purged nitrogen in solution, which may serve as a photosensitizer under visible and NIR light excitation.
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Affiliation(s)
- Guanheng Huang
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structure Materials of Guangdong Providence, Shantou University, Shantou 515063, China
| | - Jiayu Li
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structure Materials of Guangdong Providence, Shantou University, Shantou 515063, China
| | - Ziqi Deng
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structure Materials of Guangdong Providence, Shantou University, Shantou 515063, China
| | - Jinghong Li
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structure Materials of Guangdong Providence, Shantou University, Shantou 515063, China
| | - Shanshan Sun
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structure Materials of Guangdong Providence, Shantou University, Shantou 515063, China
| | - Liang Xu
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structure Materials of Guangdong Providence, Shantou University, Shantou 515063, China
- Chemistry and Chemical Engineering Guangdong Laboratory, Shantou 515031, P. R. China
| | - Li Dang
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structure Materials of Guangdong Providence, Shantou University, Shantou 515063, China
| | - Ming-De Li
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structure Materials of Guangdong Providence, Shantou University, Shantou 515063, China
- Chemistry and Chemical Engineering Guangdong Laboratory, Shantou 515031, P. R. China
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17
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Li RJ, Tessarolo J, Lee H, Clever GH. Multi-stimuli Control over Assembly and Guest Binding in Metallo-supramolecular Hosts Based on Dithienylethene Photoswitches. J Am Chem Soc 2021; 143:3865-3873. [PMID: 33673736 PMCID: PMC7975281 DOI: 10.1021/jacs.0c12188] [Citation(s) in RCA: 65] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
![]()
It is difficult to
assemble multi-component metallo-supramolecular
architectures in a non-statistical fashion, which limits their development
toward functional materials. Herein, we report a system of interconverting
bowls and cages that are able to respond to various selective stimuli
(light, ligands, anions), based on the self-assembly of a photochromic
dithienylethene (DTE) ligand, La, with PdII cations. By combining the concept of “coordination
sphere engineering”, relying on bulky quinoline donors, with
reversible photoswitching between the ligand’s open (o-La) and closed (c-La) forms, a [Pd2(o-La)4] cage (o-C) and a [Pd2(c-La)3] bowl (c-B) were obtained,
respectively. This structural rearrangement modulates the system’s
guest uptake capabilities. Among three bis-sulfonate guests (G1, G2, and G3), the cage can encapsulate
only the smallest (G1), while the bowl binds all of them.
Bowl c-B was further used to synthesize
a series of heteroleptic cages, [Pd2LA3LB], representing a motif never reported before. Additional
ligands (Lc-f), with short
or long arms, tune the cavity size, thus enabling or preventing guest
uptake. Addition of Br–/Ag+ makes it
possible to change the overall charge, again triggering guest uptake
and release, as well as fourth ligand de-/recomplexation. In combination,
site-selective introduction of functionality and application of external
stimuli lead to an intricate system of hosts with different guest
preferences. A high degree of complexity is achieved through cooperativity
between only a few components.
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Affiliation(s)
- Ru-Jin Li
- Faculty of Chemistry & Chemical Biology, TU Dortmund University, Otto-Hahn-Straße 6, 44227 Dortmund, Germany
| | - Jacopo Tessarolo
- Faculty of Chemistry & Chemical Biology, TU Dortmund University, Otto-Hahn-Straße 6, 44227 Dortmund, Germany
| | - Haeri Lee
- Faculty of Chemistry & Chemical Biology, TU Dortmund University, Otto-Hahn-Straße 6, 44227 Dortmund, Germany
| | - Guido H Clever
- Faculty of Chemistry & Chemical Biology, TU Dortmund University, Otto-Hahn-Straße 6, 44227 Dortmund, Germany
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18
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Abstract
Although many impressive metallo-supramolecular architectures have been reported, they tend towards high symmetry structures and avoid extraneous functionality to ensure high fidelity in the self-assembly process. This minimalist approach, however, limits the range of accessible structures and thus their potential applications. Herein is described the synthesis of a family of ditopic ligands wherein the ligand scaffolds are both low symmetry and incorporate exohedral functional moieties. Key to this design is the use of CuI -catalysed azide-alkyne cycloaddition (CuAAC) chemistry, as the triazole is capable of acting as both a coordinating heterocycle and a tether between the ligand framework and functional unit simultaneously. A common precursor was used to generate ligands with various functionalities, allowing control of electronic properties whilst maintaining the core structure of the resultant cis-Pd2 L4 nanocage assemblies. The isostructural nature of the scaffold frameworks enabled formation of combinatorial libraries from the self-assembly of ligand mixtures, generating a statistical mixture of multi-functional, low symmetry architectures.
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Affiliation(s)
- James E. M. Lewis
- Department of ChemistryImperial College LondonMolecular Sciences Research Hub, 82 Wood LaneLondonW12 0BZUK
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19
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Sudan S, Li RJ, Jansze SM, Platzek A, Rudolf R, Clever GH, Fadaei-Tirani F, Scopelliti R, Severin K. Identification of a Heteroleptic Pd 6L 6L' 6 Coordination Cage by Screening of a Virtual Combinatorial Library. J Am Chem Soc 2021; 143:1773-1778. [PMID: 33476512 DOI: 10.1021/jacs.0c12793] [Citation(s) in RCA: 62] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The design of structurally defined heteroleptic coordination cages is a challenging task, and only few examples are known to date. Here we describe a selection approach that allowed the identification of a novel hexanuclear Pd cage containing two types of dipyridyl ligands. A virtual combinatorial library of [PdnL2n](BF4)2n complexes was prepared by mixing six different dipyridyl ligands with substoichiometric amounts of [Pd(CH3CN)4](BF4)2. Analysis of the equilibrated reaction mixture revealed the preferential formation of a heteroleptic [Pd6L6L'6](BF4)12 assembly. The complex was prepared on a preparative scale by a targeted synthesis, and its structure was elucidated by single-crystal X-ray diffraction. It features an unprecedented trigonal-antiprismatic cage structure with two triangular Pd3L3 macrocycles bridged by six L' ligands. A related but significantly larger [Pd6L6L'6](BF4)12 cage was obtained by using metalloligands instead of organic dipyridyl ligands.
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Affiliation(s)
- Sylvain Sudan
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - Ru-Jin Li
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - Suzanne M Jansze
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - André Platzek
- Fakultät für Chemie und Chemische Biologie, Technische Universität Dortmund, 44227 Dortmund, Germany
| | - Robin Rudolf
- Fakultät für Chemie und Chemische Biologie, Technische Universität Dortmund, 44227 Dortmund, Germany
| | - Guido H Clever
- Fakultät für Chemie und Chemische Biologie, Technische Universität Dortmund, 44227 Dortmund, Germany
| | - Farzaneh Fadaei-Tirani
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - Rosario Scopelliti
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - Kay Severin
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
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20
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Melvin AA, Lebraud E, Garrigue P, Kuhn A. Light and electric field induced unusual large-scale charge separation in hybrid semiconductor objects. Phys Chem Chem Phys 2020; 22:22180-22184. [PMID: 32744277 DOI: 10.1039/d0cp03262j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Separation of electric charges is the most crucial phenomenon in natural photosynthesis, and is also extremely important for many artificial energy conversion systems based on semiconductors. The usual roadblock in this context is the fast recombination of electrons and holes. Here we demonstrate that the synergy of light and electric fields allows separating very efficiently electric charges over an unusually large distance in TiO2. The generated internal electric field can also be used to shuttle electrons simultaneously to the two opposite sides of a hybrid TiO2-polyaniline object. This counterintuitive behavior is based on the combination of the principles of bipolar electrochemistry and semi-conductor physics.
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Affiliation(s)
- Ambrose A Melvin
- Univ. Bordeaux, ISM UMR CNRS 5255, Bordeaux INP, ENSCBP, 33607 Pessac, France.
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21
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Iseki S, Nonomura K, Kishida S, Ogata D, Yuasa J. Zinc-Ion-Stabilized Charge-Transfer Interactions Drive Self-Complementary or Complementary Molecular Recognition. J Am Chem Soc 2020; 142:15842-15851. [PMID: 32786739 DOI: 10.1021/jacs.0c05940] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Here, we show that charge-transfer interactions determine whether donor and acceptor ditopic ligands will associate in a complementary or self-complementary fashion upon metal-ion clipping. Anthracene-based (9,10LD and 1,5LD) and anthraquinone-based (1,5LA) ditopic ligands containing two imidazole side arms as zinc coordination sites were designed. The 9,10LD and 1,5LA systems associated in a complementary fashion (LA/LD/LA) upon clipping by two zinc ions (Zn2+) to form an alternating donor-acceptor assembly [(9,10LD)(1,5LA)2-(Zn2+)2]. However, once the charge-transfer interactions were perturbed by subtle modifications of the imidazole side arms (9,10LD'(S) and 1,5LA'(S)), self-complementary association (LD'/LD'/LD'/LD' and LA'/LA'/LA'/LA') between the donor (9,10LD'(S)) and acceptor (1,5LA'(S)) ligands predominantly occurred to form homoassemblies [(9,10LD'(S))4-(Zn2+)2 and (1,5LA'(S))4-(Zn2+)2]. As in the case of a homochiral pair (9,10LD'(S) and 1,5LA'(S)), self-complementary association (narcissistic self-sorting) occurred in the Zn2+ assembly with heterochiral combinations of the donor and acceptor ligands (9,10LD'(S)/1,5LA'(R) and 9,10LD'(S)/1,5LA'(R)/1,5LA'(R)). Narcissistic self-sorting also took place between the positional isomer of the donor ligands (9,10LD and 1,5LD) to form individual homoligand assemblies [(9,10LD)4-(Zn2+)2 and (1,5LD)4-(Zn2+)2]. Conversely, statistical association took place in the Zn2L4 assembly process of an isomorphous pair of the donor and acceptor ligands (1,5LD and 1,5LA).
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Affiliation(s)
- Shuta Iseki
- Department of Applied Chemistry, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
| | - Kohei Nonomura
- Department of Applied Chemistry, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
| | - Sakura Kishida
- Department of Applied Chemistry, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
| | - Daiji Ogata
- Department of Applied Chemistry, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
| | - Junpei Yuasa
- Department of Applied Chemistry, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
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22
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Dutton KG, Rothschild DA, Pastore DB, Emge TJ, Lipke MC. The Influence of Redox-Active Linkers on the Stability and Physical Properties of a Highly Electroactive Porphyrin Nanoprism. Inorg Chem 2020; 59:12616-12624. [DOI: 10.1021/acs.inorgchem.0c01719] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Kaitlyn G. Dutton
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, 123 Bevier Road, Piscataway, New Jersey 08854, United States
| | - Daniel A. Rothschild
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, 123 Bevier Road, Piscataway, New Jersey 08854, United States
| | - Dakota B. Pastore
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, 123 Bevier Road, Piscataway, New Jersey 08854, United States
| | - Thomas J. Emge
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, 123 Bevier Road, Piscataway, New Jersey 08854, United States
| | - Mark C. Lipke
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, 123 Bevier Road, Piscataway, New Jersey 08854, United States
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23
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Bao SJ, Xu ZM, Ju Y, Song YL, Wang H, Niu Z, Li X, Braunstein P, Lang JP. The Covalent and Coordination Co-Driven Assembly of Supramolecular Octahedral Cages with Controllable Degree of Distortion. J Am Chem Soc 2020; 142:13356-13361. [PMID: 32697582 DOI: 10.1021/jacs.0c07014] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Discovering and constructing novel and fancy structures is the goal of many supramolecular chemists. In this work, we propose an assembly strategy based on the synergistic effect of coordination and covalent interactions to construct a set of octahedral supramolecular cages and adjust their degree of distortion. Our strategy innovatively utilizes the addition of sulfur atoms of a metal sulfide synthon, [Et4N][Tp*WS3] (A), to an alkynyl group of a pyridine-containing linker, resulting in a novel vertex with low symmetry, and of Cu(I) ions. By adjusting the length of the linker and the position of the reactive alkynyl group, the control of the deformation degree of the octahedral cages can be realized. These supramolecular cages exhibit enhanced third-order nonlinear optical (NLO) responses. The results offer a powerful strategy to construct novel distorted cage structures as well as control the degree of distortion of supramolecular geometries.
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Affiliation(s)
- Shu-Jin Bao
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, Jiangsu China.,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
| | - Ze-Ming Xu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, Jiangsu China
| | - Yun Ju
- School of Physical Science and Technology, Soochow University, Suzhou 215006, Jiangsu China
| | - Ying-Lin Song
- School of Physical Science and Technology, Soochow University, Suzhou 215006, Jiangsu China
| | - Heng Wang
- Chemistry Department, University of South Florida, Tampa, Florida 33620United States
| | - Zheng Niu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, Jiangsu China
| | - Xiaopeng Li
- Chemistry Department, University of South Florida, Tampa, Florida 33620United States
| | - Pierre Braunstein
- Institut de Chimie (UMR 7177 CNRS), Université de Strasbourg, 67081 Strasbourg, France
| | - Jian-Ping Lang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, Jiangsu China.,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
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24
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Pullen S, Löffler S, Platzek A, Holstein JJ, Clever GH. Substrate and product binding inside a stimuli-responsive coordination cage acting as a singlet oxygen photosensitizer. Dalton Trans 2020; 49:9404-9410. [PMID: 32589176 DOI: 10.1039/d0dt01674h] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
An acridone-based, interpenetrated double cage [3BF4Pd4L8] acts as a photosensitizer for generating singlet oxygen which adds to 1,3-cyclohexadiene in a [2+4] hetero-Diels-Alder reaction to form 2,3-dioxabicyclo[2.2.2]oct-5-ene. Photocatalytic activity was exclusively observed for the assembled cage, whereas the free organic ligand L decomposes upon irradiation. While cage [3BF4Pd4L8] does not accept any organic guests, NMR, MS and single crystal X-ray results reveal that both substrate and product are readily encapsulated in the central pocket of its chloride-activated form [2Cl@Pd4L8]. The system combines multiple functions (photosensitization, allosteric activation and guest uptake) within a structurally complex, mechanically-bound self-assembly built up from a simple and readily accessible ligand.
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Affiliation(s)
- Sonja Pullen
- Faculty of Chemistry and Chemical Biology, TU Dortmund University, Otto-Hahn Str. 6, 44227 Dortmund, Germany.
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25
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Li P, Xu S, Yu C, Li Z, Xu J, Li Z, Zou L, Leng X, Gao S, Liu Z, Liu X, Zhang S. De Novo Construction of Catenanes with Dissymmetric Cages by Space‐Discriminative Post‐Assembly Modification. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202000442] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Pan Li
- Frontiers Science Center for Transformative MoleculesShanghai Key Laboratory of Electrical Insulation and Thermal AgingSchool of Chemistry and Chemical EngineeringShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Shijun Xu
- Key Laboratory of Specially Functional Polymeric Materials and Related Technology (ECUST)Ministry of EducationEast China University of Science and Technology 130 Meilong Road Shanghai 200237 China
| | - Chunyang Yu
- Frontiers Science Center for Transformative MoleculesShanghai Key Laboratory of Electrical Insulation and Thermal AgingSchool of Chemistry and Chemical EngineeringShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Zi‐Ying Li
- Key Laboratory of Specially Functional Polymeric Materials and Related Technology (ECUST)Ministry of EducationEast China University of Science and Technology 130 Meilong Road Shanghai 200237 China
| | - Jianping Xu
- Frontiers Science Center for Transformative MoleculesShanghai Key Laboratory of Electrical Insulation and Thermal AgingSchool of Chemistry and Chemical EngineeringShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Zi‐Mu Li
- Frontiers Science Center for Transformative MoleculesShanghai Key Laboratory of Electrical Insulation and Thermal AgingSchool of Chemistry and Chemical EngineeringShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Lingyi Zou
- Frontiers Science Center for Transformative MoleculesShanghai Key Laboratory of Electrical Insulation and Thermal AgingSchool of Chemistry and Chemical EngineeringShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Xuebing Leng
- State Key Laboratory of Organometallic ChemistryShanghai, Institute of Organic ChemistryChinese Academy of Sciences Shanghai 200032 China
| | - Shan Gao
- Neurological Department, Shanghai Jiao Tong University Affiliated Sixth People's HospitalSouth Campus Shanghai 200240 China
| | - Zhiqiang Liu
- The National and Local Joint Engineering Research Center for Biomanufacturing of Chiral ChemicalsZhejiang University of Technology Hangzhou 310014 China
| | - Xiaoyun Liu
- Key Laboratory of Specially Functional Polymeric Materials and Related Technology (ECUST)Ministry of EducationEast China University of Science and Technology 130 Meilong Road Shanghai 200237 China
| | - Shaodong Zhang
- Frontiers Science Center for Transformative MoleculesShanghai Key Laboratory of Electrical Insulation and Thermal AgingSchool of Chemistry and Chemical EngineeringShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
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26
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Li P, Xu S, Yu C, Li Z, Xu J, Li Z, Zou L, Leng X, Gao S, Liu Z, Liu X, Zhang S. De Novo Construction of Catenanes with Dissymmetric Cages by Space‐Discriminative Post‐Assembly Modification. Angew Chem Int Ed Engl 2020; 59:7113-7121. [DOI: 10.1002/anie.202000442] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Indexed: 11/09/2022]
Affiliation(s)
- Pan Li
- Frontiers Science Center for Transformative Molecules Shanghai Key Laboratory of Electrical Insulation and Thermal Aging School of Chemistry and Chemical Engineering Shanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Shijun Xu
- Key Laboratory of Specially Functional Polymeric Materials and Related Technology (ECUST) Ministry of Education East China University of Science and Technology 130 Meilong Road Shanghai 200237 China
| | - Chunyang Yu
- Frontiers Science Center for Transformative Molecules Shanghai Key Laboratory of Electrical Insulation and Thermal Aging School of Chemistry and Chemical Engineering Shanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Zi‐Ying Li
- Key Laboratory of Specially Functional Polymeric Materials and Related Technology (ECUST) Ministry of Education East China University of Science and Technology 130 Meilong Road Shanghai 200237 China
| | - Jianping Xu
- Frontiers Science Center for Transformative Molecules Shanghai Key Laboratory of Electrical Insulation and Thermal Aging School of Chemistry and Chemical Engineering Shanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Zi‐Mu Li
- Frontiers Science Center for Transformative Molecules Shanghai Key Laboratory of Electrical Insulation and Thermal Aging School of Chemistry and Chemical Engineering Shanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Lingyi Zou
- Frontiers Science Center for Transformative Molecules Shanghai Key Laboratory of Electrical Insulation and Thermal Aging School of Chemistry and Chemical Engineering Shanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Xuebing Leng
- State Key Laboratory of Organometallic Chemistry Shanghai, Institute of Organic Chemistry Chinese Academy of Sciences Shanghai 200032 China
| | - Shan Gao
- Neurological Department, Shanghai Jiao Tong University Affiliated Sixth People's Hospital South Campus Shanghai 200240 China
| | - Zhiqiang Liu
- The National and Local Joint Engineering Research Center for Biomanufacturing of Chiral Chemicals Zhejiang University of Technology Hangzhou 310014 China
| | - Xiaoyun Liu
- Key Laboratory of Specially Functional Polymeric Materials and Related Technology (ECUST) Ministry of Education East China University of Science and Technology 130 Meilong Road Shanghai 200237 China
| | - Shaodong Zhang
- Frontiers Science Center for Transformative Molecules Shanghai Key Laboratory of Electrical Insulation and Thermal Aging School of Chemistry and Chemical Engineering Shanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
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27
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Qiao W, Song T, Cheng P, Zhao B. Highly Selective Enamination of β‐ketoesters Catalyzed by Interlocked [Cu
8
] and [Cu
18
] Nanocages. Angew Chem Int Ed Engl 2019; 58:13302-13307. [DOI: 10.1002/anie.201906306] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Indexed: 11/07/2022]
Affiliation(s)
- Wan‐Zhen Qiao
- College of ChemistryKey Laboratory of Advanced Energy Material Chemistry, MOENankai University Tianjin 300071 China
| | - Tian‐Qun Song
- Department of ChemistryTianjin University Tianjin 300072 China
| | - Peng Cheng
- College of ChemistryKey Laboratory of Advanced Energy Material Chemistry, MOENankai University Tianjin 300071 China
| | - Bin Zhao
- College of ChemistryKey Laboratory of Advanced Energy Material Chemistry, MOENankai University Tianjin 300071 China
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28
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Qiao W, Song T, Cheng P, Zhao B. Highly Selective Enamination of β‐ketoesters Catalyzed by Interlocked [Cu
8
] and [Cu
18
] Nanocages. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201906306] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Wan‐Zhen Qiao
- College of ChemistryKey Laboratory of Advanced Energy Material Chemistry, MOENankai University Tianjin 300071 China
| | - Tian‐Qun Song
- Department of ChemistryTianjin University Tianjin 300072 China
| | - Peng Cheng
- College of ChemistryKey Laboratory of Advanced Energy Material Chemistry, MOENankai University Tianjin 300071 China
| | - Bin Zhao
- College of ChemistryKey Laboratory of Advanced Energy Material Chemistry, MOENankai University Tianjin 300071 China
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29
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Bardhan D, Chand DK. Palladium(II)-Based Self-Assembled Heteroleptic Coordination Architectures: A Growing Family. Chemistry 2019; 25:12241-12269. [PMID: 31158303 DOI: 10.1002/chem.201900831] [Citation(s) in RCA: 70] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Revised: 05/29/2019] [Indexed: 01/10/2023]
Abstract
Metal-driven self-assembly is one of the most effective approaches to lucidly design a large range of discrete 2D and 3D coordination architectures/complexes. Palladium(II)-based self-assembled coordination architectures are usually prepared by using suitable metal components, in either a partially protected form (PdL') or typical form (Pd; charges are not shown), and designed ligand components. The self-assembled molecules prepared by using a metal component and only one type of bi- or polydentate ligand (L) can be classified in the homoleptic series of complexes. On the other hand, the less explored heteroleptic series of complexes are obtained by using a metal component and at least two different types of non-chelating bi- or polydentate ligands (such as La and Lb ). Methods that allow the controlled generation of single, discrete heteroleptic complexes are less understood. A survey of palladium(II)-based self-assembled coordination cages that are heteroleptic has been made. This review article illustrates a systematic collection of such architectures and credible justification of their formation, along with reported functional aspects of the complexes. The collected heteroleptic assemblies are classified here into three sections: 1) [(PdL')m (La )x (Lb )y ]-type complexes, in which the denticity of La and Lb is equal; 2) [(PdL')m (La )x (Lb )y ]-type complexes, in which the denticity of La and Lb is different; and 3) [Pdm (La )x (Lb )y ]-type complexes, in which the denticity of La and Lb is equal. Representative examples of some important homoleptic architectures are also provided, wherever possible, to set a background for a better understanding of the related heteroleptic versions. The purpose of this review is to pave the way for the construction of several unique heteroleptic coordination assemblies that might exhibit emergent supramolecular functions.
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Affiliation(s)
- Devjanee Bardhan
- Department of Chemistry, Indian Institute of Technology Madras, Chennnai, 600036, India
| | - Dillip Kumar Chand
- Department of Chemistry, Indian Institute of Technology Madras, Chennnai, 600036, India
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30
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Lin L, Lin Y, Jin G. Coordination‐driven self‐assembly of Cp*Rh‐Based Rectangles, Cages and Their Host−Guest Binding Study. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.4926] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Lin Lin
- Department of Translational Medicine Research CenterShenyang Medical College Shenyang 110034 People's Republic of China
| | - Yue‐Jian Lin
- State Key Laboratory of Molecular Engineering of Polymers, Collaborative Innovation Centre of Chemistry for Energy Materials, Department of ChemistryFudan University Shanghai 200433 People's Republic of China
| | - Guo‐Xin Jin
- State Key Laboratory of Molecular Engineering of Polymers, Collaborative Innovation Centre of Chemistry for Energy Materials, Department of ChemistryFudan University Shanghai 200433 People's Republic of China
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31
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Zhu R, Ding J, Jin L, Pang H. Interpenetrated structures appeared in supramolecular cages, MOFs, COFs. Coord Chem Rev 2019. [DOI: 10.1016/j.ccr.2019.03.002] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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32
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Sen SK, Natarajan R. Influence of Conformational Change and Interligand Hydrogen Bonding in a Chiral Metal–Organic Cage. Inorg Chem 2019; 58:7180-7188. [DOI: 10.1021/acs.inorgchem.8b03610] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Shovan Kumar Sen
- Organic and Medicinal Chemistry Division, CSIR − Indian Institute of Chemical Biology, 4, Raja S. C. Mullick Road, Kolkata, 700032, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Ramalingam Natarajan
- Organic and Medicinal Chemistry Division, CSIR − Indian Institute of Chemical Biology, 4, Raja S. C. Mullick Road, Kolkata, 700032, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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33
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Li Z, Dai J, Damjanović M, Shiga T, Wang J, Zhao J, Oshio H, Yamashita M, Bu X. Structure Switching and Modulation of the Magnetic Properties in Diarylethene‐Bridged Metallosupramolecular Compounds by Controlled Coordination‐Driven Self‐Assembly. Angew Chem Int Ed Engl 2019; 58:4339-4344. [DOI: 10.1002/anie.201900789] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2019] [Indexed: 11/09/2022]
Affiliation(s)
- Zhao‐Yang Li
- School of Materials Science and EngineeringNankai University 38 Tongyan Road, Haihe Educational Park Tianjin 300350 P. R. China
| | - Jing‐Wei Dai
- State Key Laboratory of Medicinal Chemical BiologyNankai University 94 Weijin Road Tianjin 300071 P. R. China
| | - Marko Damjanović
- Institute of Nanotechnology (INT)Karlsruhe Institute of Technology (KIT) Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Takuya Shiga
- Department of ChemistryGraduate School of Pure and Applied SciencesUniversity of Tsukuba Tennnodai 1-1-1 Tsukuba 305-8571 Japan
| | - Jin‐Hua Wang
- School of Materials Science and EngineeringNankai University 38 Tongyan Road, Haihe Educational Park Tianjin 300350 P. R. China
| | - Jia Zhao
- School of Materials Science and EngineeringNankai University 38 Tongyan Road, Haihe Educational Park Tianjin 300350 P. R. China
| | - Hiroki Oshio
- Department of ChemistryGraduate School of Pure and Applied SciencesUniversity of Tsukuba Tennnodai 1-1-1 Tsukuba 305-8571 Japan
| | - Masahiro Yamashita
- Department of ChemistryGraduate School of ScienceTohoku University 6-3 Aramaki-Aza-Aoba, Aoba-ku Sendai 980-8578 Japan
- WPI Research CenterAdvanced Institute for Materials ResearchTohoku University Sendai 980-8577 Japan
| | - Xian‐He Bu
- School of Materials Science and EngineeringNankai University 38 Tongyan Road, Haihe Educational Park Tianjin 300350 P. R. China
- State Key Laboratory of Elemento-Organic ChemistryCollege of ChemistryNankai University 94 Weijin Road Tianjin 300071 P. R. China
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34
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Li Z, Dai J, Damjanović M, Shiga T, Wang J, Zhao J, Oshio H, Yamashita M, Bu X. Structure Switching and Modulation of the Magnetic Properties in Diarylethene‐Bridged Metallosupramolecular Compounds by Controlled Coordination‐Driven Self‐Assembly. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201900789] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Zhao‐Yang Li
- School of Materials Science and EngineeringNankai University 38 Tongyan Road, Haihe Educational Park Tianjin 300350 P. R. China
| | - Jing‐Wei Dai
- State Key Laboratory of Medicinal Chemical BiologyNankai University 94 Weijin Road Tianjin 300071 P. R. China
| | - Marko Damjanović
- Institute of Nanotechnology (INT)Karlsruhe Institute of Technology (KIT) Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Takuya Shiga
- Department of ChemistryGraduate School of Pure and Applied SciencesUniversity of Tsukuba Tennnodai 1-1-1 Tsukuba 305-8571 Japan
| | - Jin‐Hua Wang
- School of Materials Science and EngineeringNankai University 38 Tongyan Road, Haihe Educational Park Tianjin 300350 P. R. China
| | - Jia Zhao
- School of Materials Science and EngineeringNankai University 38 Tongyan Road, Haihe Educational Park Tianjin 300350 P. R. China
| | - Hiroki Oshio
- Department of ChemistryGraduate School of Pure and Applied SciencesUniversity of Tsukuba Tennnodai 1-1-1 Tsukuba 305-8571 Japan
| | - Masahiro Yamashita
- Department of ChemistryGraduate School of ScienceTohoku University 6-3 Aramaki-Aza-Aoba, Aoba-ku Sendai 980-8578 Japan
- WPI Research CenterAdvanced Institute for Materials ResearchTohoku University Sendai 980-8577 Japan
| | - Xian‐He Bu
- School of Materials Science and EngineeringNankai University 38 Tongyan Road, Haihe Educational Park Tianjin 300350 P. R. China
- State Key Laboratory of Elemento-Organic ChemistryCollege of ChemistryNankai University 94 Weijin Road Tianjin 300071 P. R. China
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35
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Jing X, He C, Zhao L, Duan C. Photochemical Properties of Host-Guest Supramolecular Systems with Structurally Confined Metal-Organic Capsules. Acc Chem Res 2019; 52:100-109. [PMID: 30586276 DOI: 10.1021/acs.accounts.8b00463] [Citation(s) in RCA: 92] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Inspired by natural photosynthesis, researchers have designed symmetric metal-organic hosts with large inner pockets that are spontaneously generated through preorganized ligands and functionalized metallocorners to construct dye-containing host-guest systems. The abundant noncovalent interaction sites in the pockets of the hosts facilitated substrate-catalyst interactions for possible enrichment, fixation, and activation of substrates/reagents, providing special electron transfer pathways for regio- or stereoselectively photocatalytic chemical transformations. In this Account, we focus our attention on metal-organic hosts that contain photoactive or redox-active units to evaluate electron transfer and charge separation between host and guest units in these supramolecular systems and elucidate the related photoinduced chemical reactions controlled by these electron transfer processes within the structurally confined pockets of these interesting metal-organic hosts. We have been engaged in developing methods to isolate a series of chromophores for charge separation in supramolecular systems, incorporating organic dyes as photosensitizers in metal-organic hosts with electron acceptor/donor guests is a promising way to enable typical enzyme-like photocatalytic transformations within a confined microenvironment. Related to these inter- and intramolecular photoinduced electron transfer (PET) processes, the formation of host-guest supramolecular systems to fix and isolate the donor-acceptor pair with a short through-space distance provided a new PET pathway to stabilize the charge-separated ion pair. Highly efficient photosynthetic systems can be obtained when charge transfer to electron donors/acceptors occurs faster than the charge recombination. This Account starts with a brief summary of the potential approaches for constructing photoactive metal-organic hosts through the incorporation of dye molecules within ligand backbones or as a part of the metal nodes of the architecture. Following the methodological summary is a discussion on the mechanisms governing the photoinduced charge separation and electron transfer pathways within the dye-incorporated metal-organic hosts. We also searched for strategies for constructing photoactive supramolecular systems through encapsulating dye molecules within the inner space of redox-active hosts. The photochemistry of these systems demonstrated the following advantages due to the structural confinement: avoiding excited state quenching caused by other chemical species, including aggregated dyes, stabilizing the radical intermediate and tuning the absorption or emission of the guest through electron/energy transfer pathways. The photoinduced dye to redox-active host electron transfer is a new and efficient pathway that is meaningful for chemists to realize and understand many important enzymatic processes and to reveal the secrets of a substance and energy metabolism in biological systems. The confined interactions between the host and the guest have shown fascinating effects of promoting and controlling light-induced chemical transformations.
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Affiliation(s)
- Xu Jing
- State Key Laboratory of Fine Chemicals, Zhang Dayu College of Chemistry, Dalian University of Technology, Dalian, 116024, P. R. China
| | - Cheng He
- State Key Laboratory of Fine Chemicals, Zhang Dayu College of Chemistry, Dalian University of Technology, Dalian, 116024, P. R. China
| | - Liang Zhao
- State Key Laboratory of Fine Chemicals, Zhang Dayu College of Chemistry, Dalian University of Technology, Dalian, 116024, P. R. China
| | - Chunying Duan
- State Key Laboratory of Fine Chemicals, Zhang Dayu College of Chemistry, Dalian University of Technology, Dalian, 116024, P. R. China
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36
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Zhao L, Jing X, Li X, Guo X, Zeng L, He C, Duan C. Catalytic properties of chemical transformation within the confined pockets of Werner-type capsules. Coord Chem Rev 2019. [DOI: 10.1016/j.ccr.2017.11.005] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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37
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Komine S, Tateishi T, Kojima T, Nakagawa H, Hayashi Y, Takahashi S, Hiraoka S. Self-assembly processes of octahedron-shaped Pd6L12 cages. Dalton Trans 2019; 48:4139-4148. [DOI: 10.1039/c8dt04931a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Self-assembly processes of three octahedron-shaped [Pd6L12]12+ cages were investigated by an NMR-based quantitative approach (QASAP).
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Affiliation(s)
- Shohei Komine
- Department of Basic Science
- Graduate School of Arts and Sciences
- The University of Tokyo
- Tokyo 153-8902
- Japan
| | - Tomoki Tateishi
- Department of Basic Science
- Graduate School of Arts and Sciences
- The University of Tokyo
- Tokyo 153-8902
- Japan
| | - Tatsuo Kojima
- Department of Basic Science
- Graduate School of Arts and Sciences
- The University of Tokyo
- Tokyo 153-8902
- Japan
| | - Haruna Nakagawa
- Department of Basic Science
- Graduate School of Arts and Sciences
- The University of Tokyo
- Tokyo 153-8902
- Japan
| | - Yasuhiro Hayashi
- Department of Basic Science
- Graduate School of Arts and Sciences
- The University of Tokyo
- Tokyo 153-8902
- Japan
| | - Satoshi Takahashi
- Department of Basic Science
- Graduate School of Arts and Sciences
- The University of Tokyo
- Tokyo 153-8902
- Japan
| | - Shuichi Hiraoka
- Department of Basic Science
- Graduate School of Arts and Sciences
- The University of Tokyo
- Tokyo 153-8902
- Japan
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38
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Saha S, Regeni I, Clever GH. Structure relationships between bis-monodentate ligands and coordination driven self-assemblies. Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2018.06.010] [Citation(s) in RCA: 98] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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39
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Wang L, Liu R, Gu J, Song B, Wang H, Jiang X, Zhang K, Han X, Hao XQ, Bai S, Wang M, Li X, Xu B, Li X. Self-Assembly of Supramolecular Fractals from Generation 1 to 5. J Am Chem Soc 2018; 140:14087-14096. [PMID: 30289702 PMCID: PMC6348470 DOI: 10.1021/jacs.8b05530] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
In the seeking of molecular expression of fractal geometry, chemists have endeavored in the construction of molecules and supramolecules during the past few years, while only a few examples were reported, especially for the discrete architectures. We herein designed and constructed five generations of supramolecular fractals (G1-G5) based on the coordination-driven self-assembly of terpyridine ligands. All the ligands were synthesized from triphenylamine motif, which played a central role in geometry control. Different approaches based on direct Sonogashira coupling and/or ⟨tpy-Ru(II)-tpy⟩ connectivity were employed to prepare complex Ru(II)-organic building blocks. Fractals G1-G5 were obtained in high yields by precise coordination of organic or Ru(II)-organic building blocks with Zn(II) ions. Characterization of those architectures were accomplished by 1D and 2D NMR spectroscopy, electrospray ionization mass spectrometry (ESI-MS), traveling-wave ion mobility mass spectrometry (TWIM-MS), and transmission electron microscopy (TEM). Furthermore, the two largest fractals also hierarchically self-assemble into ordered supramolecular nanostructures either at solid/liquid interface or in solution on the basis of their well-defined scaffolds.
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Affiliation(s)
- Lei Wang
- Department of Chemistry , University of South Florida , Tampa , Florida 33620 , United States
| | - Ran Liu
- Shandong Province Key Laboratory of Medical Physics and Image Processing Technology, School of Physics and Electronics , Shandong Normal University , Jinan 250358 , China
- Single Molecule Study Laboratory, College of Engineering and Nanoscale Science and Engineering Center , University of Georgia , Athens , Georgia 30602 , United States
| | - Jiali Gu
- College of Chemistry, Chemical Engineering and Materials Science , Soochow University , Suzhou 215123 , China
| | - Bo Song
- Department of Chemistry , University of South Florida , Tampa , Florida 33620 , United States
| | - Heng Wang
- Department of Chemistry , University of South Florida , Tampa , Florida 33620 , United States
| | - Xin Jiang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry , Jilin University , Changchun , Jilin 130012 , China
| | - Keren Zhang
- Single Molecule Study Laboratory, College of Engineering and Nanoscale Science and Engineering Center , University of Georgia , Athens , Georgia 30602 , United States
| | - Xin Han
- College of Chemistry and Molecular Engineering , Zhengzhou University , Zhengzhou , Henan 450001 , China
| | - Xin-Qi Hao
- College of Chemistry and Molecular Engineering , Zhengzhou University , Zhengzhou , Henan 450001 , China
| | - Shi Bai
- Department of Chemistry and Biochemistry , University of Delaware , Newark , Delaware 19716 , United States
| | - Ming Wang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry , Jilin University , Changchun , Jilin 130012 , China
| | - Xiaohong Li
- College of Chemistry, Chemical Engineering and Materials Science , Soochow University , Suzhou 215123 , China
| | - Bingqian Xu
- Single Molecule Study Laboratory, College of Engineering and Nanoscale Science and Engineering Center , University of Georgia , Athens , Georgia 30602 , United States
| | - Xiaopeng Li
- Department of Chemistry , University of South Florida , Tampa , Florida 33620 , United States
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40
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Wang C, Cheng X, Tan J, Ding Z, Wang W, Yuan D, Li G, Zhang H, Zhang X. Reductive cleavage of C[double bond, length as m-dash]C bonds as a new strategy for turn-on dual fluorescence in effective sensing of H 2S. Chem Sci 2018; 9:8369-8374. [PMID: 30542584 PMCID: PMC6247518 DOI: 10.1039/c8sc03430c] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Accepted: 09/10/2018] [Indexed: 11/24/2022] Open
Abstract
Four effective probes with turn-off to turn-on fluorescence switches were successfully applied for sensing H2S.
Reductive cleavage of alkenes is rarely reported in synthetic chemistry. Here we report a unique H2S-mediated reductive cleavage of C
Created by potrace 1.16, written by Peter Selinger 2001-2019
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C bonds under mild conditions, which is a successful new strategy for the design of probes for effective sensing of H2S with turn-on dual-color fluorescence. A short series of phenothiazine ethylidene malononitrile derivatives were shown to react with H2S, via reductive cleavage of C
Created by potrace 1.16, written by Peter Selinger 2001-2019
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C bonds with intramolecular cyclization reactions to form thiophene rings. Enlightened by this new reaction mechanism, four effective probes with turn-off to turn-on fluorescence switches were successfully applied for sensing H2S, an important gaseous signalling molecule in living systems, among which PTZ-P4 exhibited two fluorescent colors after reductive cleavage. The dual-color probe was applied for imaging endogenous H2S and showed distinct differences in brightness in living C. elegans for wild type N2, glp-1 (e2144) mutants (higher levels of endogenous H2S), and cth-1 (ok3319) mutants (lower levels of endogenous H2S). The discovery of H2S-mediated reductive cleavage of C
Created by potrace 1.16, written by Peter Selinger 2001-2019
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C bonds is expected to be valuable for chemical synthesis, theoretical studies, and the design of new fluorescent H2S probes.
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Affiliation(s)
- Chunfei Wang
- Faculty of Health Sciences , University of Macau , Macau SAR , China . ;
| | - Xiaoxiang Cheng
- Faculty of Health Sciences , University of Macau , Macau SAR , China . ;
| | - Jingyun Tan
- Faculty of Health Sciences , University of Macau , Macau SAR , China . ;
| | - Zhaoyang Ding
- Faculty of Health Sciences , University of Macau , Macau SAR , China . ;
| | - Wenjing Wang
- State Key Laboratory of Structural Chemistry , Fujian Institute of Research on the Structure of Matter , Chinese Academy of Sciences , Fuzhou 350002 , China
| | - Daqiang Yuan
- State Key Laboratory of Structural Chemistry , Fujian Institute of Research on the Structure of Matter , Chinese Academy of Sciences , Fuzhou 350002 , China
| | - Gang Li
- Faculty of Health Sciences , University of Macau , Macau SAR , China . ;
| | - Hongjie Zhang
- Faculty of Health Sciences , University of Macau , Macau SAR , China . ;
| | - Xuanjun Zhang
- Faculty of Health Sciences , University of Macau , Macau SAR , China . ;
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41
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Zhu R, Bloch WM, Holstein JJ, Mandal S, Schäfer LV, Clever GH. Donor-Site-Directed Rational Assembly of Heteroleptic cis-[Pd 2 L 2 L' 2 ] Coordination Cages from Picolyl Ligands. Chemistry 2018; 24:12976-12982. [PMID: 29924444 PMCID: PMC6174927 DOI: 10.1002/chem.201802188] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Indexed: 01/05/2023]
Abstract
A donor-site engineering approach facilitates the formation of heteroleptic [Pd2 L2 L'2 ]4+ cage structures through a favored cis-'in2 /out2 ' spatial configuration of the methyl groups of 5- and 3-substituted bis-monodentate picolyl ligands with flat acridone and bent phenothiazine backbones. The heteroleptic cages were confirmed by ESI-MS and 2D NMR experiments as well as DFT calculations, which pointed toward a cis-configuration being energetically favored. This was further supported by the synthesis and X-ray structure of a previously unreported cis-[Pd(2-picoline)4 ]2+ complex. The formation of homoleptic structures, however, was met with considerable steric hindrance at the PdII centers, as observed by the formation of [Pd2 L3 (solvent)2 ]4+ and [Pd2 L2 (solvent)4 ]4+ species when only one type of acridone-based ligand was offered. In contrast, bent phenothiazine ligands with outside-pointing methyl groups showed the ability to form interpenetrated double-cages, as revealed by X-ray crystallography. The general route presented herein enables the assembly of uniform cis-[Pd2 L2 L'2 ]4+ coordination cages, thus furthering the possibility to increase structural and functional complexity in supramolecular systems.
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Affiliation(s)
- Rongmei Zhu
- Faculty of Chemistry and Chemical BiologyTU Dortmund UniversityOtto-Hahn-Strasse 644227DortmundGermany
- Current affiliation: School of Chemistry and Chemical EngineeringYangzhou University225002YangzhouJiangsuP.R. China
| | - Witold M. Bloch
- Faculty of Chemistry and Chemical BiologyTU Dortmund UniversityOtto-Hahn-Strasse 644227DortmundGermany
- Current affiliation: Department of Chemistry and Centre for Advanced Nanomaterials, School of Physical SciencesThe University of AdelaideAdelaideAustralia
| | - Julian J. Holstein
- Faculty of Chemistry and Chemical BiologyTU Dortmund UniversityOtto-Hahn-Strasse 644227DortmundGermany
| | - Soham Mandal
- Faculty of Chemistry and Chemical BiologyTU Dortmund UniversityOtto-Hahn-Strasse 644227DortmundGermany
| | - Lars V. Schäfer
- Center for Theoretical Chemistry, Faculty of Chemistry and BiochemistryRuhr-University44780BochumGermany
| | - Guido H. Clever
- Faculty of Chemistry and Chemical BiologyTU Dortmund UniversityOtto-Hahn-Strasse 644227DortmundGermany
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42
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Bogie PM, Miller TF, Hooley RJ. Synthesis and Applications of Endohedrally Functionalized Metal‐Ligand Cage Complexes. Isr J Chem 2018. [DOI: 10.1002/ijch.201800067] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Paul M. Bogie
- Department of Chemistry University of California – Riverside Riverside, CA 92521 U.S.A
| | - Tabitha F. Miller
- Department of Chemistry University of California – Riverside Riverside, CA 92521 U.S.A
| | - Richard J. Hooley
- Department of Chemistry University of California – Riverside Riverside, CA 92521 U.S.A
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43
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Howlader P, Mondal B, Purba PC, Zangrando E, Mukherjee PS. Self-Assembled Pd(II) Barrels as Containers for Transient Merocyanine Form and Reverse Thermochromism of Spiropyran. J Am Chem Soc 2018; 140:7952-7960. [DOI: 10.1021/jacs.8b03946] [Citation(s) in RCA: 102] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Prodip Howlader
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
| | - Bijnaneswar Mondal
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
| | - Prioti Choudhury Purba
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
| | - Ennio Zangrando
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, Trieste 34127, Italy
| | - Partha Sarathi Mukherjee
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
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44
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Bloch WM, Holstein JJ, Dittrich B, Hiller W, Clever GH. Hierarchical Assembly of an Interlocked M 8 L 16 Container. Angew Chem Int Ed Engl 2018; 57:5534-5538. [PMID: 29392809 PMCID: PMC5947565 DOI: 10.1002/anie.201800490] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Indexed: 01/01/2023]
Abstract
The self-assembly of eight PdII cations and sixteen phenanthrene-derived bridging ligands with 60° bite angles yielded a novel M8 L16 metallosupramolecular architecture composed of two interlocked D4h -symmetric barrel-shaped containers. Mass spectrometry, NMR spectroscopy, and X-ray analysis revealed this self-assembled structure to be a very large "Hopf link" catenane featuring channel-like cavities, which are occupied by NO3- anions. The importance of the anions as catenation templates became imminent when we observed the nitrate-triggered structural rearrangement of a mixture of M3 L6 and M4 L8 assemblies formed in the presence of BF4- anions into the same interlocked molecule. Furthermore, the densely packed structure of the M8 L16 catenane was exploited in the preparation of a hexyloxy-functionalized analogue, which further self-assembled into vesicle-like aggregates in a reversible manner.
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Affiliation(s)
- Witold M. Bloch
- Department of Chemistry and Chemical BiologyTU Dortmund UniversityOtto-Hahn-Straße 644227DortmundGermany
- Department of Chemistry and Centre for Advanced NanomaterialsSchool of Physical SciencesThe University of AdelaideAdelaideAustralia
| | - Julian J. Holstein
- Department of Chemistry and Chemical BiologyTU Dortmund UniversityOtto-Hahn-Straße 644227DortmundGermany
| | - Birger Dittrich
- Institute for Inorganic Chemistry and Structural ChemistryHeinrich-Heine University DüsseldorfUniversitätsstraße 140225DüsseldorfGermany
| | - Wolf Hiller
- Department of Chemistry and Chemical BiologyTU Dortmund UniversityOtto-Hahn-Straße 644227DortmundGermany
| | - Guido H. Clever
- Department of Chemistry and Chemical BiologyTU Dortmund UniversityOtto-Hahn-Straße 644227DortmundGermany
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45
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Zheng HL, Chen XL, Li T, Yin Z, Zhang Y, Kurmoo M, Zeng MH. Manipulating Clusters by Use of Competing N,O-Chelating Ligands: A Combined Crystallographic, Mass Spectrometric, and DFT Study. Chemistry 2018; 24:7906-7912. [DOI: 10.1002/chem.201800516] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 02/26/2018] [Indexed: 11/09/2022]
Affiliation(s)
- Hui-Li Zheng
- Key Laboratory for the Chemistry and Molecular Engineering of, Medicinal Resources, School of Chemistry and Pharmaceutical Sciences; Guangxi Normal University; Guilin 541004 P. R. China
| | - Xue-Li Chen
- Key Laboratory for the Synthesis and Application of, Organic Functional Molecules, College of Chemistry and Chemical Engineering; Hubei University; Wuhan 430062 P. R. China
| | - Tian Li
- Key Laboratory for the Synthesis and Application of, Organic Functional Molecules, College of Chemistry and Chemical Engineering; Hubei University; Wuhan 430062 P. R. China
| | - Zheng Yin
- College of Chemistry and Chemical Engineering, Shanxi University of Science and Technology; Xi'an 710021 P. R. China
| | - Yuexing Zhang
- Key Laboratory for the Synthesis and Application of, Organic Functional Molecules, College of Chemistry and Chemical Engineering; Hubei University; Wuhan 430062 P. R. China
| | - Mohamedally Kurmoo
- Universite de Strasbourg, Institut de Chimie de Strasbourg, CNRS-UMR7177; 4 rue Blaise Pascal Strasbourg Cedex 67070 France
| | - Ming-Hua Zeng
- Key Laboratory for the Chemistry and Molecular Engineering of, Medicinal Resources, School of Chemistry and Pharmaceutical Sciences; Guangxi Normal University; Guilin 541004 P. R. China
- Key Laboratory for the Synthesis and Application of, Organic Functional Molecules, College of Chemistry and Chemical Engineering; Hubei University; Wuhan 430062 P. R. China
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46
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Bhuvaneswari N, Dai FR, Chen ZN. Sensitive and Specific Guest Recognition through Pyridinium-Modification in Spindle-Like Coordination Containers. Chemistry 2018; 24:6580-6585. [PMID: 29446864 DOI: 10.1002/chem.201705210] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Indexed: 12/13/2022]
Abstract
An elaborately designed pyridinium-functionalized octanuclear zinc(II) coordination container 1-Zn was prepared through the self-assembly of Zn2+ , p-tert-butylsulfonylcalix[4]arene, and pyridinium-functionalized angular flexible dicarboxylate linker (H2 BrL1). The structure was determined by a single-crystal X-ray diffractometer. 1-Zn displays highly sensitive and specific recognition to 2-picolylamine as revealed by drastic blueshifts of the absorption and emission spectra, ascribed to the decrease of intramolecular charge transfer (ICT) character of the container and the occurrence of intermolecular charge transfer between the host and guest molecules. The intramolecular charge transfer plays a key role in the modulation of the electronic properties and is tunable through endo-encapsulation of specific guest molecules.
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Affiliation(s)
- Nagarajan Bhuvaneswari
- 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.,University of Chinese Academy of Sciences, Beijing, 100039, P.R. China
| | - Feng-Rong Dai
- 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
| | - Zhong-Ning Chen
- 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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47
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Bloch WM, Holstein JJ, Dittrich B, Hiller W, Clever GH. Hierarchischer Aufbau eines verflochtenen M8L16-Containers. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201800490] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Witold M. Bloch
- Fakultät für Chemie und Chemische Biologie; Technische Universität Dortmund; Otto-Hahn-Straße 6 44227 Dortmund Deutschland
- Department of Chemistry and Centre for Advanced Nanomaterials; School of Physical Sciences; The University of Adelaide; Adelaide Australien
| | - Julian J. Holstein
- Fakultät für Chemie und Chemische Biologie; Technische Universität Dortmund; Otto-Hahn-Straße 6 44227 Dortmund Deutschland
| | - Birger Dittrich
- Institut für Anorganische Chemie und Strukturchemie; Heinrich-Heine Universität Düsseldorf; Universitätsstraße 1 40225 Düsseldorf Deutschland
| | - Wolf Hiller
- Fakultät für Chemie und Chemische Biologie; Technische Universität Dortmund; Otto-Hahn-Straße 6 44227 Dortmund Deutschland
| | - Guido H. Clever
- Fakultät für Chemie und Chemische Biologie; Technische Universität Dortmund; Otto-Hahn-Straße 6 44227 Dortmund Deutschland
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48
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Kai S, Maddala SP, Kojima T, Akagi S, Harano K, Nakamura E, Hiraoka S. Flexibility of components alters the self-assembly pathway of Pd 2L 4 coordination cages. Dalton Trans 2018; 47:3258-3263. [PMID: 29442109 DOI: 10.1039/c8dt00112j] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The self-assembly process of a Pd2L4 cage consisting of flexible ditopic ligands and Pd(ii) ions was revealed by QASAP (quantitative analysis of self-assembly process), which enables one to obtain information about the intermediates transiently produced during the self-assembly as the average composition of all the intermediates. It was found that the dominant pathway to the cage is the formation of a submicrometre-sized sheet structure, which was characterized by dynamic light scattering (DLS) and scanning transmission electron microscopy (STEM), followed by the addition of free ditopic ligands to the Pd(ii) centres of the sheet structure to trigger the cage formation. This assembly process is completely different from that of a Pd2L4 cage composed of rigid ditopic ligands, indicating that the flexibility of the components strongly affects the self-assembly process.
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Affiliation(s)
- Shumpei Kai
- Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro-ku, Tokyo 153-8902, Japan.
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49
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Chen ZM, Cui Y, Jiang XF, Tong J, Yu SY. Programmable self-assembly of water-soluble organo-heterometallic cages [M 12M' 4L 12] using 3-(3,5-dimethyl-1H-pyrazol-4-yl)pentane-2,4-dione (H 2L). Chem Commun (Camb) 2018; 53:4238-4241. [PMID: 28361135 DOI: 10.1039/c7cc00425g] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A bifunctional ligand H2L featuring primary (pyrazole) and secondary (acetylacetone) coordination sites was preferentially reacted with dimetallic [M2(NO3)2](NO3)2 linkers at the pyrazolyl end of H2L, giving rise to dimetallic corners. Subsequently, the corners serve as the secondary site with M' to form water-soluble organo-heterometallic [M12M'4L12] cages in a stepwise mode.
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Affiliation(s)
- Zi-Man Chen
- Laboratory for Self-Assembly Chemistry, Department of Chemistry and Chemical Industry, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China.
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50
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Ahrens J, Frank M, Clever GH, Schwarzer D. Ultrafast IR spectroscopy of photo-induced electron transfer in self-assembled donor-acceptor coordination cages. Phys Chem Chem Phys 2018; 19:13596-13603. [PMID: 28513684 DOI: 10.1039/c7cp02253k] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Photo-induced processes in self-assembled coordination cages were studied by femtosecond infrared pump-probe spectroscopy. Densely packed, interpenetrated double cages were constructed from eight bis-monodentate redoxactive ligands bound to four Pd(ii) nodes. Two types of ligands consisting of electron rich phenothiazine (PTZ) or electron deficient anthraquinone (ANQ) chromophores were used to assemble either homo-octameric or mixed-ligand cages. Upon photoexcitation the homo-octameric acceptor cage undergoes intersystem crossing to a long-lived triplet state, similar to the free acceptor ligand. Excitation of the free donor ligand leads to a fluorescent state with intramolecular charge transfer character. This fluorescence is completely quenched in the homo-octameric donor double cage due to a ligand-to-metal charge transfer followed by back electron transfer on a ps timescale. Only for the mixed-ligand cage irradiation produces a charge separated state with an oxidized PTZ radical cation and a reduced ANQ radical anion as proven by their vibrational fingerprints in the transient IR spectra. In dichloromethane the lifetime of this charge separated state extends from tens of ps to >1.5 ns which is attributed to the broad distribution of mixed-ligand cages with different stoichiometry and/or stereo configurations.
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Affiliation(s)
- J Ahrens
- Max-Planck-Institute for Biophysical Chemistry, Am Fassberg 11, 37077 Göttingen, Germany.
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