1
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Veedu RM, Fernández Z, Bäumer N, Albers A, Fernández G. Pathway-dependent supramolecular polymerization by planarity breaking. Chem Sci 2024; 15:10745-10752. [PMID: 39027305 PMCID: PMC11253169 DOI: 10.1039/d4sc02499k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2024] [Accepted: 06/04/2024] [Indexed: 07/20/2024] Open
Abstract
In controlled supramolecular polymerization, planar π-conjugated scaffolds are commonly used to predictably regulate stacking interactions, with various assembly pathways arising from competing interactions involving side groups. However, the extent to which the nature of the chromophore itself (planar vs. non-planar) affects pathway complexity requires clarification. To address this question, we herein designed a new BOPHY dye 2, where two oppositely oriented BF2 groups induce a disruption of planarity, and compared its supramolecular polymerization in non-polar media with that of a previously reported planar BODIPY 1 bearing identical substituents. The slightly non-planar structure of the BOPHY dye 2, as evident in previously reported X-ray structures, together with the additional out-of-plane BF2 group, allow for more diverse stacking possibilities leading to two fiber-like assemblies (kinetic 2A and thermodynamic 2B), in contrast to the single assembly previously observed for BODIPY 1. The impact of the less rigid, preorganized BOPHY core compared to the planar BODIPY counterpart is also reflected in the stronger tendency of the former to form anisotropic assemblies as a result of more favorable hydrogen bonding arrays. The structural versatility of the BOPHY core ultimately enables two stable packing arrangements: a kinetically controlled antiparallel face-to-face stacking (2A), and a thermodynamically controlled parallel slipped packing (2B) stabilized by (BF2) F⋯H (meso) interactions. Our findings underscore the significance of planarity breaking and out-of-plane substituents on chromophores as design elements in controlled supramolecular polymerization.
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Affiliation(s)
- Rasitha Manha Veedu
- Universität Münster, Organisch-Chemisches Institut Corrensstraße 36 Münster 48149 Germany
| | - Zulema Fernández
- Universität Münster, Organisch-Chemisches Institut Corrensstraße 36 Münster 48149 Germany
| | - Nils Bäumer
- Universität Münster, Organisch-Chemisches Institut Corrensstraße 36 Münster 48149 Germany
| | - Antonia Albers
- Universität Münster, Organisch-Chemisches Institut Corrensstraße 36 Münster 48149 Germany
| | - Gustavo Fernández
- Universität Münster, Organisch-Chemisches Institut Corrensstraße 36 Münster 48149 Germany
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2
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He X, Yu J, Yin R, Zhang P, Xiao C, Chen X. A Nanoscale Trans-Platinum(II)-Based Supramolecular Coordination Self-Assembly with a Distinct Anticancer Mechanism. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2312488. [PMID: 38301714 DOI: 10.1002/adma.202312488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 01/23/2024] [Indexed: 02/03/2024]
Abstract
Drug resistance significantly hampers the clinical application of existing platinum-based anticancer drugs. New platinum medications that possess distinct mechanisms of action are highly desired for the treatment of Pt-resistant cancers. Herein, a nanoscale trans-platinum(II)-based supramolecular coordination self-assembly (Pt-TCPP-BA) is prepared via using trans-[PtCl2(pyridine)(NH3)] (transpyroplatin), tetracarboxylporphyrin (TCPP), and benzoic acid (BA) as building blocks to combat drug resistance in platinum-based chemotherapy. Mechanistic studies indicate that Pt-TCPP-BA shows a hydrogen-peroxide-responsive dissociation behavior along with the generation of bioactive trans-Pt(II) and TCPP-Pt species. Different from cisplatin, these degradation products interact with DNA via interstrand cross-links and small groove binding, and induce significant upregulation of cell-death-related proteins such as p53, cleaved caspase 3, p21, and phosphorylated H2A histone family member X in cisplatin-resistant cancer cells. As a result, Pt-TCPP-BA exhibits potent killing effects against Pt-resistant tumors both in vitro and in vivo. Overall, this work not only provides a new platinum drug for combating drug-resistant cancer but also offers a new paradigm for the development of platinum-based supramolecular anticancer drugs.
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Affiliation(s)
- Xidong He
- Key Laboratory of Polymer Ecomaterials, Jilin Biomedical Polymers Engineering Laboratory, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, 230026, P. R. China
| | - Jie Yu
- Key Laboratory of Polymer Ecomaterials, Jilin Biomedical Polymers Engineering Laboratory, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, 230026, P. R. China
| | - Renyong Yin
- Key Laboratory of Polymer Ecomaterials, Jilin Biomedical Polymers Engineering Laboratory, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, 230026, P. R. China
| | - Peng Zhang
- Key Laboratory of Polymer Ecomaterials, Jilin Biomedical Polymers Engineering Laboratory, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, 230026, P. R. China
| | - Chunsheng Xiao
- Key Laboratory of Polymer Ecomaterials, Jilin Biomedical Polymers Engineering Laboratory, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, 230026, P. R. China
| | - Xuesi Chen
- Key Laboratory of Polymer Ecomaterials, Jilin Biomedical Polymers Engineering Laboratory, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, 230026, P. R. China
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3
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Wang D, Chen J, Wang Y, Hao X, Peng H, Liao Y, Zhou X, Smalyukh II, Xie X. Photoswitching in a Liquid Crystalline Pt(II) Coordination Complex. Chemistry 2024; 30:e202304366. [PMID: 38296805 DOI: 10.1002/chem.202304366] [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: 01/04/2024] [Revised: 01/27/2024] [Accepted: 01/30/2024] [Indexed: 02/02/2024]
Abstract
Photoswitching of photoluminescence has sparked tremendous research interests for super-resolution imaging, high-security-level anti-counterfeiting, and other high-tech applications. However, the excitation of photoluminescence is usually ready to trigger the photoswitching process, making the photoluminescence readout unreliable. Herein, we report a new photoswitch by the marriage of spiropyran with platinum(II) coordination complex. Viable photoluminescence can be achieved upon excitation by 480 nm visible light while the photoswitching can be easily triggered by 365 nm UV light. The feasible photoswitching may be benefited from the formed liquid crystalline (LC) phase of the designed photoswitch as a crystalline spiropyran is normally unable to implement photoswitching. Compared to the counterparts, this LC photoswitch can show distinct and reliable apparent colors and emission colors before and after photoswitching, which may promise the utility in high-security-level anti-counterfeiting and other advanced information technologies.
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Affiliation(s)
- Dan Wang
- Key Lab of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan, 430074, China
| | - Jie Chen
- Key Lab of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan, 430074, China
| | - Yixuan Wang
- Key Lab of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan, 430074, China
| | - Xingtian Hao
- Key Lab of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan, 430074, China
| | - Haiyan Peng
- Key Lab of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan, 430074, China
- State Key Laboratory of Materials Processing and Die & Mould Technology, HUST, Wuhan, 430074, China
- National Anti-counterfeit Engineering Research Center, HUST, Wuhan, 430074, China
| | - Yonggui Liao
- Key Lab of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan, 430074, China
- State Key Laboratory of Materials Processing and Die & Mould Technology, HUST, Wuhan, 430074, China
- National Anti-counterfeit Engineering Research Center, HUST, Wuhan, 430074, China
| | - Xingping Zhou
- Key Lab of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan, 430074, China
- State Key Laboratory of Materials Processing and Die & Mould Technology, HUST, Wuhan, 430074, China
- National Anti-counterfeit Engineering Research Center, HUST, Wuhan, 430074, China
| | - Ivan I Smalyukh
- Department of Physics and Materials Science and Engineering Program, University of Colorado at Boulder, Boulder, Colorado, 80309, United States
| | - Xiaolin Xie
- Key Lab of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan, 430074, China
- State Key Laboratory of Materials Processing and Die & Mould Technology, HUST, Wuhan, 430074, China
- National Anti-counterfeit Engineering Research Center, HUST, Wuhan, 430074, China
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4
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Haketa Y, Murakami Y, Maeda H. Ion-pairing assemblies of π-extended anion-responsive organoplatinum complexes. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2024; 25:2313958. [PMID: 38414575 PMCID: PMC10898271 DOI: 10.1080/14686996.2024.2313958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Accepted: 01/29/2024] [Indexed: 02/29/2024]
Abstract
PtII complexes of π-extended dipyrrolyldiketones were synthesized as anion-responsive π-electronic molecules. The dipyrrolyldiketone PtII complexes exhibited red-shifted absorption and photoluminescence properties. In the solid state, [1 + 1]-type anion complexes formed charge-by-charge ion-pairing assemblies when combined with countercations. Detailed theoretical studies of the packing structures revealed favorable interactions between the planar anion complexes and π-electronic cations.
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Affiliation(s)
- Yohei Haketa
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University, Kusatsu, Japan
| | - Yu Murakami
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University, Kusatsu, Japan
| | - Hiromitsu Maeda
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University, Kusatsu, Japan
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5
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Castriciano MA, Zagami R, Mazzaglia A, Romeo A, Monsù Scolaro L. A Kinetic Investigation of the Supramolecular Chiral Self-Assembling Process of Cationic Organometallic (2,2':6',2″-terpyridine)methylplatinum(II) Complexes with Poly(L-glutamic Acid). Int J Mol Sci 2024; 25:1176. [PMID: 38256248 PMCID: PMC10816852 DOI: 10.3390/ijms25021176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 01/15/2024] [Accepted: 01/16/2024] [Indexed: 01/24/2024] Open
Abstract
The cationic platinum(II) organometallic complex [Pt(terpy)Me]+ (terpy = 2,2':6',2″-terpyridine) at mild acidic pH interacts with poly(L-glutamic acid) (L-PGA) in its α-helix conformation, affording chiral supramolecular adducts. Their kinetics of formation have been investigated in detail as a function of the concentrations of both reagents and changing pH, ionic strength, the length of the polymeric scaffold and temperature. After a very fast early stage, the kinetic traces have been analyzed as three consecutive steps, suggesting a mechanism based on the electrostatic fast formation of a not-organized aggregate that subsequently evolves through different rearrangements to form the eventual supramolecular adduct. A model for this species has been proposed based on (i) the attractive electrostatic interaction of the cationic platinum(II) complexes and the polyelectrolyte and (ii) the π-stacking interactions acting among the [Pt(terpy)Me]+ units.
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Affiliation(s)
- Maria Angela Castriciano
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, University of Messina, V.le F. Stagno D’Alcontres, 31, 98166 Messina, Italy; (M.A.C.); (R.Z.)
| | - Roberto Zagami
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, University of Messina, V.le F. Stagno D’Alcontres, 31, 98166 Messina, Italy; (M.A.C.); (R.Z.)
| | - Antonino Mazzaglia
- CNR-ISMN Istituto per lo Studio dei Materiali Nanostrutturati c/o Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, University of Messina, V.le F. Stagno D’Alcontres, 31, 98166 Messina, Italy;
| | - Andrea Romeo
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, University of Messina, V.le F. Stagno D’Alcontres, 31, 98166 Messina, Italy; (M.A.C.); (R.Z.)
- CNR-ISMN Istituto per lo Studio dei Materiali Nanostrutturati c/o Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, University of Messina, V.le F. Stagno D’Alcontres, 31, 98166 Messina, Italy;
| | - Luigi Monsù Scolaro
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, University of Messina, V.le F. Stagno D’Alcontres, 31, 98166 Messina, Italy; (M.A.C.); (R.Z.)
- CNR-ISMN Istituto per lo Studio dei Materiali Nanostrutturati c/o Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, University of Messina, V.le F. Stagno D’Alcontres, 31, 98166 Messina, Italy;
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6
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Haketa Y, Komatsu K, Sei H, Imoba H, Ota W, Sato T, Murakami Y, Tanaka H, Yasuda N, Tohnai N, Maeda H. Enhanced solid-state phosphorescence of organoplatinum π-systems by ion-pairing assembly. Chem Sci 2024; 15:964-973. [PMID: 38239682 PMCID: PMC10793596 DOI: 10.1039/d3sc04564a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Accepted: 12/01/2023] [Indexed: 01/22/2024] Open
Abstract
Anion binding and ion pairing of dipyrrolyldiketone PtII complexes as anion-responsive π-electronic molecules resulted in photophysical modulations, as observed in solid-state phosphorescence properties. Modifications to arylpyridine ligands in the PtII complexes significantly impacted the assembling behaviour and photophysical properties of anion-free and anion-binding (ion-pairing) forms. The PtII complexes, in the presence of guest anions and their countercations, formed various anion-binding modes and ion-pairing assembled structures depending on constituents and forms (solutions and crystals). The PtII complexes emitted strong phosphorescence in deoxygenated solutions but showed extremely weak phosphorescence in the solid state owing to self-association. In contrast, the solid-state ion-pairing assemblies with tetraalkylammonium cations exhibited enhanced phosphorescence owing to the formation of hydrogen-bonding 1D-chain PtII complexes dispersed by stacking with aliphatic cations. Theoretical studies revealed that the enhanced phosphorescence in the solid-state ion-pairing assembly was attributed to preventing the delocalisation of the electron wavefunction over PtII complexes.
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Affiliation(s)
- Yohei Haketa
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University Kusatsu 525-8577 Japan
| | - Kaifu Komatsu
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University Kusatsu 525-8577 Japan
| | - Hiroi Sei
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University Suita 565-0871 Japan
| | - Hiroki Imoba
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University Suita 565-0871 Japan
| | | | - Tohru Sato
- Fukui Institute for Fundamental Chemistry, Kyoto University Kyoto 606-8103 Japan
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University Kyoto 615-8510 Japan
| | - Yu Murakami
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University Kusatsu 525-8577 Japan
| | - Hiroki Tanaka
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University Kusatsu 525-8577 Japan
| | - Nobuhiro Yasuda
- Beamline Division, Japan Synchrotron Radiation Research Institute Sayo 679-5198 Japan
| | - Norimitsu Tohnai
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University Suita 565-0871 Japan
| | - Hiromitsu Maeda
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University Kusatsu 525-8577 Japan
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7
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Suzuki H, Akiyama Y, Yamashina M, Tanaka Y, Toyota S. Transformation of Highly Hydrophobic Triarylphosphines into Amphiphiles via Staudinger Reaction with Hydrophilic Trichlorophenyl Azide. Chemistry 2023; 29:e202303017. [PMID: 37766651 DOI: 10.1002/chem.202303017] [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: 09/16/2023] [Revised: 09/26/2023] [Accepted: 09/28/2023] [Indexed: 09/29/2023]
Abstract
Owing to its hydrophobic properties and reactivity, triarylphosphines (PAr3 ) are promising precursors for the development of new amphiphiles. However, an efficient and reliable synthetic method for amphiphiles based on highly hydrophobic PAr3 is still required. Herein, a straightforward transformation of highly hydrophobic PAr3 into amphiphiles via the Staudinger reaction is reported. By simply mixing PAr3 and a hydrophilic trichlorophenyl azide containing two hydrophilic chains, amphiphiles bearing a N=P bond (i. e., an azaylide moiety) were quantitatively formed. The obtained azaylide-based amphiphiles were remarkably water-soluble, enabling their spontaneous self-assembly into 2 nm-sized micelles composed of 4-5 molecules in water with a low critical micelle concentration (up to 0.05 mM or less) due to the effective intermolecular interactions among the hydrophobic surfaces. Although the azaylide moiety is easily hydrolyzed in the presence of water, the azaylide in the amphiphiles displayed notable stability in water even at 60 h, which stems from the LUMO modulation induced by the presence of three electron-withdrawing chloro groups and two twisted alkoxycarbonyl groups, according to DFT calculations. An amphiphile having a large hydrophobic surface solubilized various hydrophobic organic dyes through efficient intermolecular interactions, resulting in the dyes exhibiting either monomer or excimer emissions in water.
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Affiliation(s)
- Hayate Suzuki
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo, 152-8551, Japan
| | - Yoshimori Akiyama
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo, 152-8551, Japan
| | - Masahiro Yamashina
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo, 152-8551, Japan
| | - Yuya Tanaka
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama, 226-8503, Japan
| | - Shinji Toyota
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo, 152-8551, Japan
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8
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Mukhopadhyay RD, Ajayaghosh A. Metallosupramolecular polymers: current status and future prospects. Chem Soc Rev 2023. [PMID: 37962512 DOI: 10.1039/d3cs00692a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2023]
Abstract
Metallo-supramolecular polymers have gained increasing attention and witnessed continuous development as a vibrant new research interest in the domain of soft materials. These nonconventional polymers have found widespread application in materials and biology owing to their well-defined and diversified topologies and the distinct dynamic nature of the metallosupramolecular interactions against various stimuli. Because of the intriguing redox, photonic, electronic, and magnetic properties, these stimuli-responsive supramolecular structures have attracted considerable interest for optoelectronic device fabrication. However, it still remains challenging to develop stimuli responsive systems with offbeat applications. Furthermore, achieving spatiotemporal control remains elusive with thermoresponsive and sono-responsive metallosupramolecular polymers, which encounter the disadvantage of poor precision control. Additionally, controlling the morphology of these soft materials on the mesoscale, both in solution and on substrates, has many challenges. In this review, we discuss the recent developments and future directions for the construction of stimuli responsive metallosupramolecular systems targeting practical applications. Furthermore, we discuss the synthetic methodologies that have been used to regulate the mesoscale morphology of these materials, such as coordination modulation and pseudomorphic replication. Finally, we briefly cover the burgeoning field of programmed synthesis of metallosupramolecular polymers, emphasizing techniques, such as living polymerization and chemical fuel-driven transiently active systems, which we believe will be the major research directions in the future.
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Affiliation(s)
- Rahul Dev Mukhopadhyay
- Department of Chemistry, Ramananda College, Bishnupur, Bankura 722122, West Bengal, India
| | - Ayyappanpillai Ajayaghosh
- CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram 695019, Kerala, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India.
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9
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Lin J, Peng F, Xie M, Xia J, Chang X, Zou C, Lu W. Dicationic Diimine Pt(II) Bis( N-heterocyclic allenylidene) Complexes: Extended Pt···Pt Chains, NIR Phosphorescence, and Chromonics. Inorg Chem 2023. [PMID: 37146284 DOI: 10.1021/acs.inorgchem.2c04159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Although square-planar Pt(II) complexes are well-known to self-assemble into supramolecules via noncovalent intermolecular Pt···Pt and/or π-π interactions, the self-assembly of dicationic Pt(II) complexes was scarce due to the electrostatic repulsive force. Herein, a series of dicationic diimine bis(N-heterocyclic allenylidene) Pt(II) complexes were synthesized and characterized. Close Pt···Pt and/or π-π contacts are observed in the crystals of these complexes. In particular, complexes 1·2PF6 and 2·2PF6 exhibit one-dimensional packing with extended Pt···Pt contacts of 3.302 and 3.240 Å, respectively. The photophysical properties of these complexes in the solution and solid state were investigated. NIR emission was recorded for complexes 1·2PF6 (λmax = 950 nm) and 2·2PF6 (λmax = 855 nm) in the solid state at 298 K. To explore the aggregate behaviors of these complexes, the counteranion PF6- was exchanged to the large lipophilic anion 2,3,4-tris(dodecyloxy)benzene sulfonate (LA-) and the hydrophilic anion Cl-. Complexes 1·2LA and 2·2LA or 1·2Cl and 2·2Cl could self-assemble with Pt···Pt and/or π-π interactions in the nonpolar or aqueous solutions as well. Further increasing the concentration of 1·2Cl and 2·2Cl in aqueous solution, chromonic mesophases with NIR emission (λmax = 988 nm) were obtained. DFT and TD-DFT calculations were performed to gain deep insight into the dication-dication packings and photophysical properties of the complexes. The σ-donating as well as π-accepting character of the N-heterocyclic allenylidene ligand endows complexes with rigid and electron-delocalized coplanar features, which are conducive to achieving the self-assembling processes associated with Pt···Pt and/or π-π interactions.
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Affiliation(s)
- Jinqiang Lin
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, Heilongjiang, P. R. China
- Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, Guangdong, P. R. China
| | - Fei Peng
- Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, Guangdong, P. R. China
| | - Mo Xie
- Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, Guangdong, P. R. China
| | - Jiuxu Xia
- Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, Guangdong, P. R. China
| | - Xiaoyong Chang
- Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, Guangdong, P. R. China
| | - Chao Zou
- Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, Guangdong, P. R. China
- Functional Coordination Material Group-Frontier Research Center, Songshan Lake Materials Laboratory, Dongguan 523808, Guangdong, P. R. China
| | - Wei Lu
- Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, Guangdong, P. R. China
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10
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Matarranz B, Díaz‐Cabrera S, Ghosh G, Carreira‐Barral I, Soberats B, García‐Valverde M, Quesada R, Fernández G. Anticooperative Supramolecular Oligomerization Mediated by V‐Shaped Monomer Design and Unconventional Hydrogen Bonds. Angew Chem Int Ed Engl 2023. [DOI: 10.1002/ange.202218555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
Affiliation(s)
- Beatriz Matarranz
- Westfälische Wilhelms-Universität Münster Organisch-Chemisches Institut Corrensstraße 36 48149 Münster Germany
| | - Sandra Díaz‐Cabrera
- Departamento de Química Facultad de Ciencias Universidad de Burgos 09001 Burgos Spain
| | - Goutam Ghosh
- Westfälische Wilhelms-Universität Münster Organisch-Chemisches Institut Corrensstraße 36 48149 Münster Germany
| | | | - Bartolome Soberats
- Department of Chemistry, Universitat de les Illes Balears Cra. Valldemossa, Km. 7.5 07122 Palma de Mallorca Spain
| | - María García‐Valverde
- Departamento de Química Facultad de Ciencias Universidad de Burgos 09001 Burgos Spain
| | - Roberto Quesada
- Departamento de Química Facultad de Ciencias Universidad de Burgos 09001 Burgos Spain
| | - Gustavo Fernández
- Westfälische Wilhelms-Universität Münster Organisch-Chemisches Institut Corrensstraße 36 48149 Münster Germany
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11
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Momeni BZ, Abd-El-Aziz AS. Recent advances in the design and applications of platinum-based supramolecular architectures and macromolecules. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2023.215113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
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12
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Matarranz B, Díaz-Cabrera S, Ghosh G, Carreira-Barral I, Soberats B, García-Valverde M, Quesada R, Fernández G. Anticooperative Supramolecular Oligomerization Mediated by V-Shaped Monomer Design and Unconventional Hydrogen Bonds. Angew Chem Int Ed Engl 2023; 62:e202218555. [PMID: 36828774 DOI: 10.1002/anie.202218555] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 02/24/2023] [Accepted: 02/24/2023] [Indexed: 02/26/2023]
Abstract
After more than three decades of extensive investigations on supramolecular polymers, strategies for self-limiting growth still remain challenging. Herein, we exploit a new V-shaped monomer design to achieve anticooperatively formed oligomers with superior robustness and high luminescence. In toluene, the monomer-oligomer equilibrium is shifted to the monomer side, enabling the elucidation of the molecular packing modes and the resulting (weak) anticooperativity. Steric effects associated with an antiparallel staircase organization of the dyes are proposed to outcompete aromatic and unconventional B-F⋅⋅⋅H-N/C interactions, restricting the growth at the stage of oligomers. In methylcyclohexane (MCH), the packing modes and the anticooperativity are preserved; however, pronounced solvophobic and chain-enwrapping effects lead to thermally ultrastable oligomers. Our results shed light on understanding anticooperative effects and restricted growth in self-assembly.
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Affiliation(s)
- Beatriz Matarranz
- Westfälische Wilhelms-Universität Münster, Organisch-Chemisches Institut, Corrensstraße 36, 48149, Münster, Germany
| | - Sandra Díaz-Cabrera
- Departamento de Química, Facultad de Ciencias, Universidad de Burgos, 09001, Burgos, Spain
| | - Goutam Ghosh
- Westfälische Wilhelms-Universität Münster, Organisch-Chemisches Institut, Corrensstraße 36, 48149, Münster, Germany
| | - Israel Carreira-Barral
- Departamento de Química, Facultad de Ciencias, Universidad de Burgos, 09001, Burgos, Spain
| | - Bartolome Soberats
- Department of Chemistry, Universitat de les Illes Balears Cra., Valldemossa, Km. 7.5, 07122, Palma de Mallorca, Spain
| | - María García-Valverde
- Departamento de Química, Facultad de Ciencias, Universidad de Burgos, 09001, Burgos, Spain
| | - Roberto Quesada
- Departamento de Química, Facultad de Ciencias, Universidad de Burgos, 09001, Burgos, Spain
| | - Gustavo Fernández
- Westfälische Wilhelms-Universität Münster, Organisch-Chemisches Institut, Corrensstraße 36, 48149, Münster, Germany
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13
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Borah ST, Das B, Biswas P, Mallick AI, Gupta P. Aqua-friendly organometallic Ir-Pt complexes: pH-responsive AIPE-guided imaging of bacterial cells. Dalton Trans 2023; 52:2282-2292. [PMID: 36723088 DOI: 10.1039/d2dt03390a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
In this work, the aggregation-induced photoluminescence emission (AIPE) of three water-soluble heterobimetallic Ir-Pt complexes was reported with insight into their photophysical and electrochemical properties and imaging of bacterial cells. An alkyne appended Schiff's base L, bridges bis-cyclometalated iridium(III) and platinum(II) terpyridine centre. The Schiff's base (N-N fragment) serves as the ancillary ligand to the iridium(III) centre, while the alkynyl end is coordinated to platinum(II). The pH and ionic strength influence the aggregation kinetics of the alkynylplatinum(II) fragment, leading to metal-metal and π-π interactions with the emergence of a triplet metal-metal-to-ligand charge transfer (3MMLCT) emission. The excellent reversibility and photostability of aggregation-induced emission (AIE) of these aqua-friendly complexes were tested for their ability to sense and selectively image E. coli cells at various pH values.
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Affiliation(s)
- Sakira Tabassum Borah
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, West Bengal 741246, India.
| | - Bishnu Das
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, West Bengal 741246, India.
| | - Prakash Biswas
- Department of Biological Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, West Bengal 741246, India
| | - Amirul I Mallick
- Department of Biological Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, West Bengal 741246, India
| | - Parna Gupta
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, West Bengal 741246, India.
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14
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Liu J, Xu Y, Lu H, Wang R, Xia Z, Zhao C, Huang D, Jiang F, Chen W. Nanoaggregates of Disulfide-Decorated TrxR Inhibitor Promote Cellular Uptake, Selective Targeting, and Antitumor Efficacy. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:13955-13962. [PMID: 36377412 DOI: 10.1021/acs.langmuir.2c02309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Three self-assembled nanoaggregates (CPUL1-LA NAs, CPUL1-DA NAs, and CPUL1-AA NAs) were constructed through lipoic acid (LA), dithiodipropionic acid (DA), and adipic acid (AA) decorated TrxR inhibitor (CPUL1), respectively. Measurements of DLS, TEM, UV-vis, fluorescence, 1H NMR, ITC, and MTT assays verified disulfide-containing CPUL1-LA NAs and CPUL1-DA NAs spontaneously assembled carrier-free nanoparticles in aqueous solution, which possessed high drug contents, excellent stability, improved cytotoxicity against HUH7 hepatoma cells, and potential biosafety because of low cytotoxicity against L02 normal cells. In contrast, disulfide-free CPUL1-AA NAs happened to aggregate and precipitate after 48 h, which showed distinct instability in aqueous solution. Thus, disulfide units seemed to be crucial for constructing controllable and stable nanoaggregates. While measuring the reduction of nanoaggregates by TrxR/NADPH and GSH/GR/NADPH, cyclic disulfide of LA and linear disulfide of DA were verified to endow the nanoaggregates with targeting ability to respond specifically to TrxR over GSH. Furthermore, by tests of flow cytometry, fluorescence images, and CLSM, both CPUL1-LA NAs and CPUL1-DA NAs displayed a faster cellular uptake characteristic to be internalized by cancer cells and could generate more abundant ROS to induce cell apoptosis than that of free CPUL1, resulting in significantly improved antitumor efficacy against HUH7 cells in vitro.
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Affiliation(s)
- Jing Liu
- Department of Pharmaceutical Engineering, School of Engineering, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Youqiao Xu
- Department of Infection Control, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, P. R. China
| | - Haojie Lu
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, P. R. China
| | - Rong Wang
- Department of Pharmaceutical Engineering, School of Engineering, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Zhuolu Xia
- Department of Pharmaceutical Engineering, School of Engineering, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Changshun Zhao
- Department of Pharmaceutical Engineering, School of Engineering, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Dechun Huang
- Department of Pharmaceutical Engineering, School of Engineering, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Feng Jiang
- Department of Pharmaceutical Engineering, School of Engineering, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Wei Chen
- Department of Pharmaceutical Engineering, School of Engineering, China Pharmaceutical University, Nanjing 210009, P. R. China
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15
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Sokolova E, Kinzhalov MA, Smirnov AS, Cheranyova AM, Ivanov DM, Kukushkin VY, Bokach NA. Polymorph-Dependent Phosphorescence of Cyclometalated Platinum(II) Complexes and Its Relation to Non-covalent Interactions. ACS OMEGA 2022; 7:34454-34462. [PMID: 36188282 PMCID: PMC9520548 DOI: 10.1021/acsomega.2c04110] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Accepted: 08/31/2022] [Indexed: 06/16/2023]
Abstract
Cyclometalated platinum(II) complexes [Pt(ppy)Cl(CNAr)] (ppy = 2-phenylpyridinato-C2,N; Ar = C6H4-2-I 1, C6H4-4-I 2, C6H3-2-F-4-I 3, and C6H3-2,4-I2 4) bearing ancillary isocyanide ligands were obtained by the bridge-splitting reaction between the dimer [Pt(ppy)(μ-Cl)]2 and 2 equiv any one of the corresponding CNAr. Complex 2 was crystallized in two polymorphic forms, namely, 2 I and 2 II, exhibiting green (emission quantum yield of 0.5%) and orange (emission quantum yield of 12%) phosphorescence, respectively. Structure-directing non-covalent contacts in these polymorphs were verified by a combination of experimental (X-ray diffraction) and theoretical methods (NCIplot analysis, combined electron localization function (ELF), and Bader quantum theory of atoms in molecules (QTAIM analysis)). A noticeable difference in the spectrum of non-covalent interactions of 2 I and 2 II is seen in the Pt···Pt interactions in 2 II and absence of these metallophilic contacts in 2 I. The other solid luminophores, namely, 1, 3 I-II, 4, and 4·CHCl3, exhibit green luminescence; their structures include intermolecular C-I···Cl-Pt halogen bonds as the structure-directing interactions. Crystals of 1, 2 I, 3 I, 3 II, 4, and 4·CHCl3 demonstrated a reversible mechanochromic color change achieved by mechanical grinding (green to orange) and solvent adsorption (orange to green).
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Affiliation(s)
- Elina
V. Sokolova
- Saint
Petersburg State University, Universitetskaya Nab. 7/9, Saint Petersburg 199034, Russian Federation
| | - Mikhail A. Kinzhalov
- Saint
Petersburg State University, Universitetskaya Nab. 7/9, Saint Petersburg 199034, Russian Federation
- Research
School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, Tomsk 634050, Russian
Federation
| | - Andrey S. Smirnov
- Saint
Petersburg State University, Universitetskaya Nab. 7/9, Saint Petersburg 199034, Russian Federation
| | - Anna M. Cheranyova
- Saint
Petersburg State University, Universitetskaya Nab. 7/9, Saint Petersburg 199034, Russian Federation
| | - Daniil M. Ivanov
- Saint
Petersburg State University, Universitetskaya Nab. 7/9, Saint Petersburg 199034, Russian Federation
- Research
School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, Tomsk 634050, Russian
Federation
| | - Vadim Yu. Kukushkin
- Saint
Petersburg State University, Universitetskaya Nab. 7/9, Saint Petersburg 199034, Russian Federation
- Institute
of Chemistry and Pharmaceutical Technologies, Altai State University, Barnaul 656049, Russian Federation
| | - Nadezhda A. Bokach
- Saint
Petersburg State University, Universitetskaya Nab. 7/9, Saint Petersburg 199034, Russian Federation
- Research
School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, Tomsk 634050, Russian
Federation
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16
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Matern J, Maisuls I, Strassert CA, Fernández G. Luminescence and Length Control in Nonchelated d
8
‐Metallosupramolecular Polymers through Metal‐Metal Interactions. Angew Chem Int Ed Engl 2022; 61:e202208436. [PMID: 35749048 PMCID: PMC9545304 DOI: 10.1002/anie.202208436] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Indexed: 11/15/2022]
Abstract
Supramolecular polymers (SPs) of d8 transition metal complexes have received considerable attention by virtue of their rich photophysical properties arising from metal‐metal interactions. However, thus far, the molecular design is restricted to complexes with chelating ligands due to their advantageous preorganization and strong ligand fields. Herein, we demonstrate unique pathway‐controllable metal‐metal‐interactions and remarkable 3MMLCT luminescence in SPs of a non‐chelated PtII complex. Under kinetic control, self‐complementary bisamide H‐bonding motifs induce a rapid self‐assembly into non‐emissive H‐type aggregates (1A). However, under thermodynamic conditions, a more efficient ligand coplanarization leads to superiorly stabilized SP 1B with extended Pt⋅⋅⋅Pt interactions and remarkably long 3MMLCT luminescence (τ77 K=0.26 ms). The metal‐metal interactions could be subsequently exploited to control the length of the emissive SPs using the seeded‐growth approach.
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Affiliation(s)
- Jonas Matern
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 36 48149 Münster Germany
| | - Iván Maisuls
- CiMIC SoN Institut für Anorganische und Analytische Chemie Westfälische Wilhelms-Universität Münster Corrensstraße 28/30 48149 Münster Germany
- CeNTech Westfälische Wilhelms-Universität Münster Heisenbergstraße 11 48149 Münster Germany
| | - Cristian A. Strassert
- CiMIC SoN Institut für Anorganische und Analytische Chemie Westfälische Wilhelms-Universität Münster Corrensstraße 28/30 48149 Münster Germany
- CeNTech Westfälische Wilhelms-Universität Münster Heisenbergstraße 11 48149 Münster Germany
| | - Gustavo Fernández
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 36 48149 Münster Germany
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17
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Matern J, Maisuls I, Strassert CA, Fernandez G. Luminescence and Length Control in Nonchelated d8‐Metallosupramolecular Polymers through Metal‐Metal Interactions. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202208436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Jonas Matern
- WWU Münster: Westfalische Wilhelms-Universitat Munster Organisch-Chemisches Institut GERMANY
| | - Ivan Maisuls
- WWU Münster: Westfalische Wilhelms-Universitat Munster CeNTech GERMANY
| | | | - Gustavo Fernandez
- WWU Münster Organisch-Chemisches Institut Correnstraße, 4ß 48149 Münster GERMANY
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18
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Han Y, Zhang X, Ge Z, Gao Z, Liao R, Wang F. A bioinspired sequential energy transfer system constructed via supramolecular copolymerization. Nat Commun 2022; 13:3546. [PMID: 35729110 PMCID: PMC9213434 DOI: 10.1038/s41467-022-31094-w] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Accepted: 05/31/2022] [Indexed: 11/10/2022] Open
Abstract
Sequential energy transfer is ubiquitous in natural light harvesting systems to make full use of solar energy. Although various artificial systems have been developed with the biomimetic sequential energy transfer character, most of them exhibit the overall energy transfer efficiency lower than 70% due to the disordered organization of donor/acceptor chromophores. Herein a sequential energy transfer system is constructed via supramolecular copolymerization of σ-platinated (hetero)acenes, by taking inspiration from the natural light harvesting of green photosynthetic bacteria. The absorption and emission transitions of the three designed σ-platinated (hetero)acenes range from visible to NIR region through structural variation. Structural similarity of these monomers faciliates supramolecular copolymerization in apolar media via the nucleation-elongation mechanism. The resulting supramolecular copolymers display long diffusion length of excitation energy (> 200 donor units) and high exciton migration rates (~1014 L mol−1 s−1), leading to an overall sequential energy transfer efficiency of 87.4% for the ternary copolymers. The superior properties originate from the dense packing of σ-platinated (hetero)acene monomers in supramolecular copolymers, mimicking the aggregation mode of bacteriochlorophyll pigments in green photosynthetic bacteria. Overall, directional supramolecular copolymerization of donor/acceptor chromophores with high energy transfer efficiency would provide new avenues toward artificial photosynthesis applications. Sequential energy transfer is ubiquitous in natural light harvesting systems, but most artificial mimics have unsatisfactory energy transfer efficiency. Here, authors synthesize a sequential energy transfer system with overall efficiency of 87.4% via supramolecular copolymerization mimicking the aggregation mode of bacteriochlorophyll pigments in green photosynthetic bacteria.
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Affiliation(s)
- Yifei Han
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Xiaolong Zhang
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Zhiqing Ge
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Zhao Gao
- Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, 710072, P. R. China
| | - Rui Liao
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China.
| | - Feng Wang
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China.
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19
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Puddephatt RJ. Supramolecular organometallic chemistry: the platinum(IV) paradigm. Dalton Trans 2022; 51:7011-7024. [PMID: 35438702 DOI: 10.1039/d2dt00872f] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Supramolecular chemistry and the chemistry of alkyl derivatives of the transition metals are both topics of considerable current interest, but the combination of the two fields is still underdeveloped. The challenges are, in large part, experimental in nature. For example, the self-assembly of molecules in supramolecular chemistry often relies on intermolecular hydrogen bonding, but most alkyl-transition metal bonds are cleaved by the protic groups used in hydrogen bond formation. Alkyl-platinum(IV) bonds are inert to protonolysis or attack by other electrophiles under mild conditions, and this has allowed an extensive supramolecular chemistry of organoplatinum(IV) complexes to be developed, as outlined in this perspective review. Highlights include a zeolitic structure, a polyrotaxane, a double helix, a nanotube structure and an example of spontaneous resolution to form a chiral sheet structure.
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20
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Zhong H, Jiang S, Ao L, Wang F, Wang F. Phosphorescent Host-Guest Complexes on the Basis of Polyhedral Oligomeric Silsesquioxane-Functionalized Metallotweezers. Inorg Chem 2022; 61:7111-7119. [PMID: 35482062 DOI: 10.1021/acs.inorgchem.2c00340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Phosphorescent host-guest systems have attracted considerable attention because of their intriguing properties and diverse applications. In this study, a polyhedral oligomeric silsesquioxane-functionalized gold(III) tweezer receptor has been designed and synthesized. It is capable of sandwiching platinum(II) terpyridine compounds into its cavity with a high noncovalent binding affinity (association constants: ∼105 M-1 in chloroform). The resulting heterometallic host-guest complexes exhibit enhanced phosphorescent emission compared with those of the individual species in chloroform, thanks to the prevention of vibration and rotation upon noncovalent complexation. They can further assemble into nanospheres in chloroform/diethyl ether (1:9, v/v) owing to phase segregation between the metallotweezer/guest motif and the peripheral polyhedral oligomeric silsesquioxane unit. When terpyridine platinum(II) chloride serves as the complementary guest, the resulting noncovalent system displays an intraligand emission at the individual host-guest complexed state yet excimeric emission at the supramolecular assembled state, yielding the phosphorescent solvatochromic behaviors. Overall, the polyhedral oligomeric silsesquioxane-functionalized metallotweezer combines guest encapsulation and supramolecular assembly capabilities, which provides new avenues for color-tunable phosphorescent materials.
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Affiliation(s)
- Hua Zhong
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Sixun Jiang
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Lei Ao
- Department of Pharmacy, College of Medicine, Jiaxing University, Jiaxing, Zhejiang 314001, P. R. China
| | - Fan Wang
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Feng Wang
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
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21
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Xu FF, Zeng W, Sun MJ, Gong ZL, Li ZQ, Zhao YS, Yao J, Zhong YW. Organoplatinum(II) Cruciform: A Versatile Building Block to Fabricate 2D Microcrystals with Full-Color and White Phosphorescence and Anisotropic Photon Transport. Angew Chem Int Ed Engl 2022; 61:e202116603. [PMID: 35020259 DOI: 10.1002/anie.202116603] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Indexed: 12/11/2022]
Abstract
Conventional square-planar platinum complexes typically form one-dimensional assemblies as a result of unidirectional metallophilic and/or π⋅⋅⋅π intermolecular interactions. Organoplatinum(II) complexes with a cruciform shape are presented herein to construct two-dimensional (2D) microcrystals with full-color and white phosphorescence. These 2D crystals show unique monocomponent π⋅⋅⋅π stacking, from either the cyclometalating or noncyclometalating ligand, and the bicomponent alternate π⋅⋅⋅π stacking from both ligands along different facet directions. Anisotropic tri-directional waveguiding is further implemented on a single hexagonal microcrystal. These results demonstrate the great capability of the organoplatinum(II) cruciform as a general platform to fabricate 2D phosphorescent micro-/nanocrystals for advanced photonic applications.
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Affiliation(s)
- Fa-Feng Xu
- Key Laboratory of Photochemistry, Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Wei Zeng
- Key Laboratory of Photochemistry, Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.,School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Meng-Jia Sun
- Key Laboratory of Photochemistry, Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.,School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Zhong-Liang Gong
- Key Laboratory of Photochemistry, Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Zhong-Qiu Li
- Key Laboratory of Photochemistry, Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Yong Sheng Zhao
- Key Laboratory of Photochemistry, Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.,School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Jiannian Yao
- Key Laboratory of Photochemistry, Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.,School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yu-Wu Zhong
- Key Laboratory of Photochemistry, Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.,School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
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22
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Jia D, Zhong H, Jiang S, Yao R, Wang F. Simultaneous enhancement of phosphorescence and chirality by host–guest recognition of molecular tweezers. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.02.081] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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23
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Xu FF, Zeng W, Sun MJ, Gong ZL, Li ZQ, Zhao YS, Yao J, Zhong YW. Organoplatinum(II) Cruciform: A Versatile Building Block to Fabricate 2D Microcrystals with Full‐Color and White Phosphorescence and Anisotropic Photon Transport. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202116603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Fa-Feng Xu
- Institute of Chemistry Chinese Academy of Sciences Key laboratory of photochemistry CHINA
| | - Wei Zeng
- Institute of Chemistry Chinese Academy of Sciences Key laboratory of photochemistry CHINA
| | - Meng-Jia Sun
- Institute of Chemistry Chinese Academy of Sciences Key laboratory of photochemistry CHINA
| | - Zhong-Liang Gong
- Institute of Chemistry Chinese Academy of Sciences Key laboratory of photochemistry CHINA
| | - Zhong-Qiu Li
- Institute of Chemistry Chinese Academy of Sciences Key laboratory of photochemistry CHINA
| | - Yong Sheng Zhao
- Institute of Chemistry Chinese Academy of Sciences Key laboratory of photochemistry CHINA
| | - Jiannian Yao
- Institute of Chemistry Chinese Academy of Sciences key laboratory of photochemistry CHINA
| | - Yu-Wu Zhong
- Chinese Academy of Sciences Institute of Chemistry 2 Bei Yi Jie, Zhong Guan Cun 100190 Beijing CHINA
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24
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Li R, Gong ZL, Zhu Q, Sun MJ, Che Y, Yao J, Zhong YW. A pre-organized monomer-reservoir strategy to prepare multidimensional phosphorescent organoplatinum nanocrystals and suprastructures. Sci China Chem 2021. [DOI: 10.1007/s11426-021-1129-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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25
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Tian Y, Chen B, Jiang S, Yuan M, Ren J, Wang F. [2.2]Paracyclophane-bridged platinum(II) complexes for silver(I) recognition with emission enhancement. Chem Commun (Camb) 2021; 57:11996-11999. [PMID: 34709245 DOI: 10.1039/d1cc04806f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A [2.2]paracyclophane-bridged bimetallic alkynylplatinum(II) terpyridyl complex displays severe emission quenching due to the presence of intramolecular π-π interactions. It undergoes an adaptive conformational change upon recognizing Ag+, which attenuates the intramolecular stacking strength and thereby exhibits "turn-on" emission character.
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Affiliation(s)
- Yukui Tian
- Institutes of Physical Science and Information Technology, Anhui University, Hefei, Anhui 230601, China.
| | - Bin Chen
- Institutes of Physical Science and Information Technology, Anhui University, Hefei, Anhui 230601, China.
| | - Sixun Jiang
- Key Laboratory of Soft Matter Chemistry, Hefei National Laboratory for Physical Science at the Microscale, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China.
| | - Ming Yuan
- Key Laboratory of Soft Matter Chemistry, Hefei National Laboratory for Physical Science at the Microscale, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China.
| | - Jie Ren
- Institutes of Physical Science and Information Technology, Anhui University, Hefei, Anhui 230601, China.
| | - Feng Wang
- Key Laboratory of Soft Matter Chemistry, Hefei National Laboratory for Physical Science at the Microscale, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China.
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26
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Liu J, Ji F, Xia Z, Zhang C, Zhao C, Li Y, Zhou X, Huang D, Chen W, Jiang F. Multifunctional Nanoaggregates Composed of Active CPUL1 and a Triphenylphosphine Derivative for Mitochondria-Targeted Drug Delivery and Cell Imaging. ChemMedChem 2021; 17:e202100632. [PMID: 34750966 DOI: 10.1002/cmdc.202100632] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 11/08/2021] [Indexed: 12/19/2022]
Abstract
We report that active substance (CPUL1) and triphenylphosphine (TPP) derivative could self-assemble into multifunctional nanoaggregates (CPUL1-TPP NAs) through electrostatic and π-π stacking interactions. CPUL1 was wrapped tightly inside the nanoparticles as well as CPUL1 and TPP derivative self-assembled into stable and compact nanoparticles in water. The positive surface charge of CPUL1-TPP NAs made them much easier to be endocytosed to enter cytoplasm, accumulate in the mitochondria and induce cell apoptosis based on their mitochondria targeting ability, fluorescence property and fast cell uptake characteristic, which showed better antitumor efficacy on HUH7 hepatoma cells in vitro than that of free CPUL1.
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Affiliation(s)
- Jing Liu
- Department of Pharmaceutical Engineering, China Pharmaceutical University, Nanjing, 210009, China
| | - Fei Ji
- Department of Pharmaceutical Engineering, China Pharmaceutical University, Nanjing, 210009, China
| | - Zhuolu Xia
- Department of Pharmaceutical Engineering, China Pharmaceutical University, Nanjing, 210009, China
| | - Chunhua Zhang
- Department of Pharmaceutical Engineering, China Pharmaceutical University, Nanjing, 210009, China
| | - Changshun Zhao
- Department of Pharmaceutical Engineering, China Pharmaceutical University, Nanjing, 210009, China
| | - Yanfei Li
- Department of Pharmaceutical Engineering, China Pharmaceutical University, Nanjing, 210009, China
| | - Xiang Zhou
- Department of Pharmaceutical Engineering, China Pharmaceutical University, Nanjing, 210009, China
| | - Dechun Huang
- Department of Pharmaceutical Engineering, China Pharmaceutical University, Nanjing, 210009, China
| | - Wei Chen
- Department of Pharmaceutical Engineering, China Pharmaceutical University, Nanjing, 210009, China
| | - Feng Jiang
- Department of Pharmaceutical Engineering, China Pharmaceutical University, Nanjing, 210009, China
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27
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Bäumer N, Matern J, Fernández G. Recent progress and future challenges in the supramolecular polymerization of metal-containing monomers. Chem Sci 2021; 12:12248-12265. [PMID: 34603655 PMCID: PMC8480320 DOI: 10.1039/d1sc03388c] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Accepted: 09/04/2021] [Indexed: 11/21/2022] Open
Abstract
The self-assembly of discrete molecular entities into functional nanomaterials has become a major research area in the past decades. The library of investigated compounds has diversified significantly, while the field as a whole has matured. The incorporation of metal ions in the molecular design of the (supra-)molecular building blocks greatly expands the potential applications, while also offering a promising approach to control molecular recognition and attractive and/or repulsive intermolecular binding events. Hence, supramolecular polymerization of metal-containing monomers has emerged as a major research focus in the field. In this perspective article, we highlight recent significant advances in supramolecular polymerization of metal-containing monomers and discuss their implications for future research. Additionally, we also outline some major challenges that metallosupramolecular chemists (will) have to face to produce metallosupramolecular polymers (MSPs) with advanced applications and functionalities.
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Affiliation(s)
- Nils Bäumer
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster Corrensstraße 36 48149 Münster Germany
| | - Jonas Matern
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster Corrensstraße 36 48149 Münster Germany
| | - Gustavo Fernández
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster Corrensstraße 36 48149 Münster Germany
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28
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Zhou XQ, Mytiliniou M, Hilgendorf J, Zeng Y, Papadopoulou P, Shao Y, Dominguez MP, Zhang L, Hesselberth MBS, Bos E, Siegler MA, Buda F, Brouwer AM, Kros A, Koning RI, Heinrich D, Bonnet S. Intracellular Dynamic Assembly of Deep-Red Emitting Supramolecular Nanostructures Based on the Pt…Pt Metallophilic Interaction. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2008613. [PMID: 34338371 DOI: 10.1002/adma.202008613] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 06/27/2021] [Indexed: 06/13/2023]
Abstract
Many drug delivery systems end up in the lysosome because they are built from covalent or kinetically inert supramolecular bonds. To reach other organelles, nanoparticles hence need to either be made from a kinetically labile interaction that allows re-assembly of the nanoparticles inside the cell following endocytic uptake, or, be taken up by a mechanism that short-circuits the classical endocytosis pathway. In this work, the intracellular fate of nanorods that self-assemble via the Pt…Pt interaction of cyclometalated platinum(II) compounds, is studied. These deep-red emissive nanostructures (638 nm excitation, ≈700 nm emission) are stabilized by proteins in cell medium. Once in contact with cancer cells, they cross the cell membrane via dynamin- and clathrin-dependent endocytosis. However, time-dependent confocal colocalization and cellular electron microscopy demonstrate that they directly move to mitochondria without passing by the lysosomes. Altogether, this study suggests that Pt…Pt interaction is strong enough to generate emissive, aggregated nanoparticles inside cells, but labile enough to allow these nanostructures to reach the mitochondria without being trapped in the lysosomes. These findings open new venues to the development of bioimaging nanoplatforms based on the Pt…Pt interaction.
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Affiliation(s)
- Xue-Quan Zhou
- Leiden Institute of Chemistry, Universiteit Leiden, Einsteinweg 55, Leiden, 2333 CC, Netherlands
| | - Maria Mytiliniou
- Leiden Institute of Physics, Huygens-Kamerlingh Onnes Laboratory, Universiteit Leiden, Leiden, 2300 RA, The Netherlands
| | - Jonathan Hilgendorf
- Leiden Institute of Chemistry, Universiteit Leiden, Einsteinweg 55, Leiden, 2333 CC, Netherlands
| | - Ye Zeng
- Leiden Institute of Chemistry, Universiteit Leiden, Einsteinweg 55, Leiden, 2333 CC, Netherlands
| | - Panagiota Papadopoulou
- Leiden Institute of Chemistry, Universiteit Leiden, Einsteinweg 55, Leiden, 2333 CC, Netherlands
| | - Yang Shao
- Leiden Institute of Chemistry, Universiteit Leiden, Einsteinweg 55, Leiden, 2333 CC, Netherlands
| | - Maximilian Paradiz Dominguez
- Molecular Photonics Group, Van't Hoff Institute for Molecular Sciences (HIMS), Universiteit van Amsterdam, Science Park 904, Amsterdam, 1098 XH, Netherlands
| | - Liyan Zhang
- Leiden Institute of Chemistry, Universiteit Leiden, Einsteinweg 55, Leiden, 2333 CC, Netherlands
| | - Marcel B S Hesselberth
- Leiden Institute of Physics, Huygens-Kamerlingh Onnes Laboratory, Universiteit Leiden, Leiden, 2300 RA, The Netherlands
| | - Erik Bos
- Department of Cell and Chemical Biology, Leiden University Medical Center, Einthovenweg 20, Leiden, 2333 ZC, The Netherlands
| | - Maxime A Siegler
- Department of Chemistry, Johns Hopkins University, Baltimore, MD, 21218, USA
| | - Francesco Buda
- Leiden Institute of Chemistry, Universiteit Leiden, Einsteinweg 55, Leiden, 2333 CC, Netherlands
| | - Albert M Brouwer
- Molecular Photonics Group, Van't Hoff Institute for Molecular Sciences (HIMS), Universiteit van Amsterdam, Science Park 904, Amsterdam, 1098 XH, Netherlands
- Materials Department, Advanced Research Center for Nanolithography, Science Park 106, Amsterdam, 1098 XG, The Netherlands
| | - Alexander Kros
- Leiden Institute of Chemistry, Universiteit Leiden, Einsteinweg 55, Leiden, 2333 CC, Netherlands
| | - Roman I Koning
- Department of Cell and Chemical Biology, Leiden University Medical Center, Einthovenweg 20, Leiden, 2333 ZC, The Netherlands
| | - Doris Heinrich
- Leiden Institute of Physics, Huygens-Kamerlingh Onnes Laboratory, Universiteit Leiden, Leiden, 2300 RA, The Netherlands
- Institute for Bioprocessing and Analytical Measurement Techniques, Rosenhof, 37308, Heilbad Heiligenstadt, Germany
- Faculty for Mathematics and Natural Sciences, Ilmenau University of Technology, 98693, Ilmenau, Germany
- Frauenhofer Attract 3DNanoCell, Fraunhofer Institute for Silicate Research ISC, 97082, Würzburg, Germany
| | - Sylvestre Bonnet
- Leiden Institute of Chemistry, Universiteit Leiden, Einsteinweg 55, Leiden, 2333 CC, Netherlands
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29
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Gui M, Han Y, Zhong H, Liao R, Wang F. Investigation of the Amide Linkages on Cooperative Supramolecular Polymerization of Organoplatinum(II) Complexes. Molecules 2021; 26:2832. [PMID: 34068830 PMCID: PMC8126204 DOI: 10.3390/molecules26092832] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 04/13/2021] [Accepted: 04/14/2021] [Indexed: 11/29/2022] Open
Abstract
Cooperative supramolecular polymerization of π-conjugated compounds into one-dimensional nanostructures has received tremendous attentions in recent years. It is commonly achieved by incorporating amide linkages into the monomeric structures, which provide hydrogen bonds for intermolecular non-covalent complexation. Herein, the effect of amide linkages is elaborately studied, by comparing supramolecular polymerization behaviors of two structurally similar monomers with the same platinum(II) acetylide cores. As compared to the N-phenyl benzamide linkages, N-[(1S)-1-phenylethyl] benzamide linkages give rise to effective chirality transfer behaviors due to the closer distances between the chiral units and the platinum(II) acetylide core. They also provide stronger intermolecular hydrogen bonding strength, which consequently brings higher thermo-stability and enhanced gelation capability for the resulting supramolecular polymers. Supramolecular polymerization is further strengthened by varying the monomers from monotopic to ditopic structures. Hence, with the judicious modulation of structural parameters, the current study opens up new avenues for the rational design of supramolecular polymeric systems.
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Affiliation(s)
| | | | | | - Rui Liao
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China; (M.G.); (Y.H.); (H.Z.)
| | - Feng Wang
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China; (M.G.); (Y.H.); (H.Z.)
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30
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Gong ZL, Tang K, Zhong YW. A Carbazole-Bridged Biscyclometalated Diplatinum Complex: Synthesis, Characterization, and Dual-Mode Aggregation-Enhanced Phosphorescence. Inorg Chem 2021; 60:6607-6615. [PMID: 33861581 DOI: 10.1021/acs.inorgchem.1c00403] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A cationic carbazole-bridged biscyclometalated diplatinum complex 4 has been synthesized and characterized. Single-crystal X-ray analysis demonstrates that complex 4 displays a dimeric structure with noncovalent π-π stacking and unique double Pt-Pt interactions. In aerated dilute CH3CN, complex 4 is characterized by a very weak monomeric yellow emission (λemi = 547 nm; Φ = 0.51%), which is attributed to the triplet intraligand (3LC) excited state mixing with some charge transfer characters. In contrast, under aerated conditions, the dispersion of 4 in a mixed solvent of CH3CN/Et2O (1/9, v/v) or CH3CN/H2O (1/9, v/v) displays intense yellow (λemi = 550 nm; Φ = 35.5%; τ = 11.10 μs) and red emission (λemi = 635 nm; Φ = 14.1%; τ = 7.00 μs), respectively. These aggregation-induced phosphorescent emission enhancements are considered being caused by the oxygen-shielding effect and the molecular rigidification-induced decrease of nonradiative decays in the aggregate state. The morphology and size of the aggregates under these two conditions are examined by scanning electron microscope and dynamic light scattering analysis. The absorption and emission properties of 4 are further rationalized by time-dependent density functional theory calculations on a model compound.
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Affiliation(s)
- Zhong-Liang Gong
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Kun Tang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.,School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yu-Wu Zhong
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.,School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
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31
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Matern J, Bäumer N, Fernández G. Unraveling Halogen Effects in Supramolecular Polymerization. J Am Chem Soc 2021; 143:7164-7175. [PMID: 33913728 DOI: 10.1021/jacs.1c02384] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Halogens play a crucial role in numerous natural processes and synthetic materials due to their unique physicochemical properties and the diverse interactions they can engage in. In the field of supramolecular polymerization, however, halogen effects remain poorly understood, and investigations have been restricted to halogen bonding or the inclusion of polyfluorinated side groups. Recent contributions from our group have revealed that chlorine ligands greatly influence molecular packing and pathway complexity phenomena of various metal complexes. These results prompted us to explore the role of the halogen nature on supramolecular polymerization, a phenomenon that has remained unexplored to date. To address this issue, we have designed a series of archetypal bispyridyldihalogen PtII complexes bearing chlorine (1), bromine (2), or iodine (3) and systematically compared their supramolecular polymerization in nonpolar media using various experimental methods and theory. Our studies reveal a remarkably different supramolecular polymerization for the three compounds, which can undergo two competing pathways with either slipped (kinetic) or parallel (thermodynamic) molecular packing. The halogen exerts an inverse effect on the energetic levels of the two self-assembled states, resulting in a single thermodynamic pathway for 3, a transient kinetic species for 2, and a hidden thermodynamic state for 1. This seesaw-like bias of the energy landscape can be traced back to the involvement of the halogens in weak N-H···X hydrogen-bonding interactions in the kinetic pathway, whereas in the thermodynamic pathway the halogens are not engaged in the stabilizing interaction motif but rather amplify solvophobic effects.
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Affiliation(s)
- Jonas Matern
- Organisch-Chemisches Institut, Universität Münster, Corrensstraße 36, 48149 Münster, Germany
| | - Nils Bäumer
- Organisch-Chemisches Institut, Universität Münster, Corrensstraße 36, 48149 Münster, Germany
| | - Gustavo Fernández
- Organisch-Chemisches Institut, Universität Münster, Corrensstraße 36, 48149 Münster, Germany
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32
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Suleymanova AF, Yakovleva YA, Eltsov OS, Lantushenko AO, Evstigneev MP, Donnio B, Heinrich B, Kozhevnikov VN. Comparative analysis of self-aggregation of liquid crystalline Pt(II) complexes in solution and in neat films. J Organomet Chem 2021. [DOI: 10.1016/j.jorganchem.2021.121750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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33
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Gao Z, Shi L, Ling X, Chen Z, Mei Q, Wang F. Near-infrared photon-excited energy transfer in platinum(II)-based supramolecular polymers assisted by upconverting nanoparticles. Chem Commun (Camb) 2021; 57:1927-1930. [PMID: 33496708 DOI: 10.1039/d0cc07445d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A novel hybrid supramolecular system with near-infrared photon-excited energy transfer has been successfully constructed, relying on the assistance of upconversion nanoparticles in platinum(ii)-based supramolecular polymers. The resulting hybrid system is capable of displaying intriguing photo-switchable and sequential energy transfer features.
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Affiliation(s)
- Zhao Gao
- Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an 710072, P. R. China.
| | - Lulu Shi
- Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an 710072, P. R. China.
| | - Xiao Ling
- Hefei University of Technology, Tunxi road 193, Hefei 230009, P. R. China.
| | - Ze Chen
- CAS Key Laboratory of Soft Matter Chemistry, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China.
| | - Qingsong Mei
- Hefei University of Technology, Tunxi road 193, Hefei 230009, P. R. China.
| | - Feng Wang
- CAS Key Laboratory of Soft Matter Chemistry, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China.
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34
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Bäumer N, Kartha KK, Buss S, Maisuls I, Palakkal JP, Strassert CA, Fernández G. Tuning energy landscapes and metal-metal interactions in supramolecular polymers regulated by coordination geometry. Chem Sci 2021; 12:5236-5245. [PMID: 34168776 PMCID: PMC8179630 DOI: 10.1039/d1sc00416f] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Herein, we exploit coordination geometry as a new tool to regulate the non-covalent interactions, photophysical properties and energy landscape of supramolecular polymers. To this end, we have designed two self-assembled Pt(ii) complexes 1 and 2 that feature an identical aromatic surface, but differ in the coordination and molecular geometry (linear vs. V-shaped) as a result of judicious ligand choice (monodentate pyridine vs. bidentate bipyridine). Even though both complexes form cooperative supramolecular polymers in methylcyclohexane, their supramolecular and photophysical behaviour differ significantly: while the high preorganization of the bipyridine-based complex 1 enables an H-type 1D stacking with short Pt⋯Pt contacts via a two-step consecutive process, the existence of increased steric effects for the pyridyl-based derivative 2 hinders the formation of metal–metal contacts and induces a single aggregation process into large bundles of fibers. Ultimately, this fine control of Pt⋯Pt distances leads to tuneable luminescence—red for 1vs. blue for 2, which highlights the relevance of coordination geometry for the development of functional supramolecular materials. In this article, we exploit coordination geometry as a new tool to control the energy landscape and photophysical properties (red vs. blue luminescence) of supramolecular polymers.![]()
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Affiliation(s)
- Nils Bäumer
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster Corrensstraße 36 48149 Münster Germany
| | - Kalathil K Kartha
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster Corrensstraße 36 48149 Münster Germany
| | - Stefan Buss
- CeNTech, CiMIC, SoN, Institut für Anorganische und Analytische Chemie, Westfälische Wilhelms-Universität Münster Heisenbergstraße 11 48149 Germany
| | - Iván Maisuls
- CeNTech, CiMIC, SoN, Institut für Anorganische und Analytische Chemie, Westfälische Wilhelms-Universität Münster Heisenbergstraße 11 48149 Germany
| | - Jasnamol P Palakkal
- Technische Universität Darmstadt, Department of Materials and Earth Sciences Alarich-Weiss-Straße 2 64287 Darmstadt Germany
| | - Cristian A Strassert
- CeNTech, CiMIC, SoN, Institut für Anorganische und Analytische Chemie, Westfälische Wilhelms-Universität Münster Heisenbergstraße 11 48149 Germany
| | - Gustavo Fernández
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster Corrensstraße 36 48149 Münster Germany
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35
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Helmers I, Ghosh G, Albuquerque RQ, Fernández G. Pathway and Length Control of Supramolecular Polymers in Aqueous Media via a Hydrogen Bonding Lock. Angew Chem Int Ed Engl 2021; 60:4368-4376. [PMID: 33152151 PMCID: PMC7898687 DOI: 10.1002/anie.202012710] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Indexed: 12/11/2022]
Abstract
Programming the organization of π-conjugated systems into nanostructures of defined dimensions is a requirement for the preparation of functional materials. Herein, we have achieved high-precision control over the self-assembly pathways and fiber length of an amphiphilic BODIPY dye in aqueous media by exploiting a programmable hydrogen bonding lock. The presence of a (2-hydroxyethyl)amide group in the target BODIPY enables different types of intra- vs. intermolecular hydrogen bonding, leading to a competition between kinetically controlled discoidal H-type aggregates and thermodynamically controlled 1D J-type fibers in water. The high stability of the kinetic state, which is dominated by the hydrophobic effect, is reflected in the slow transformation to the thermodynamic product (several weeks at room temperature). However, this lag time can be suppressed by the addition of seeds from the thermodynamic species, enabling us to obtain supramolecular polymers of tuneable length in water for multiple cycles.
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Affiliation(s)
- Ingo Helmers
- Organisch-Chemisches-InstitutWestfälische-Wilhelms-Universität MünsterCorrenstrasse 4048149MünsterGermany
| | - Goutam Ghosh
- Organisch-Chemisches-InstitutWestfälische-Wilhelms-Universität MünsterCorrenstrasse 4048149MünsterGermany
| | - Rodrigo Q. Albuquerque
- Lehrstuhl für SystemverfahrenstechnikTechnical University of Munich (TUM)Gregor-Mendel-Strasse 485354FreisingGermany
| | - Gustavo Fernández
- Organisch-Chemisches-InstitutWestfälische-Wilhelms-Universität MünsterCorrenstrasse 4048149MünsterGermany
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36
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Poon JKL, Chen Z, Leung SYL, Leung MY, Yam VWW. Geometrical manipulation of complex supramolecular tessellations by hierarchical assembly of amphiphilic platinum(II) complexes. Proc Natl Acad Sci U S A 2021; 118:e2022829118. [PMID: 33542102 PMCID: PMC8017981 DOI: 10.1073/pnas.2022829118] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Here we report complex supramolecular tessellations achieved by the directed self-assembly of amphiphilic platinum(II) complexes. Despite the twofold symmetry, these geometrically simple molecules exhibit complicated structural hierarchy in a columnar manner. A possible key to such an order increase is the topological transition into circular trimers, which are noncovalently interlocked by metal···metal and π-π interactions, thereby allowing for cofacial stacking in a prismatic assembly. Another key to success is to use the immiscibility of the tailored hydrophobic and hydrophilic sidechains. Their phase separation leads to the formation of columnar crystalline nanostructures homogeneously oriented on the substrate, featuring an unusual geometry analogous to a rhombitrihexagonal Archimedean tiling. Furthermore, symmetry lowering of regular motifs by design results in an orthorhombic lattice obtained by the coassembly of two different platinum(II) amphiphiles. These findings illustrate the potentials of supramolecular engineering in creating complex self-assembled architectures of soft materials.
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Affiliation(s)
- Jason Koon-Lam Poon
- Institute of Molecular Functional Materials and Department of Chemistry, The University of Hong Kong, Hong Kong, People's Republic of China
| | - Zhen Chen
- Institute of Molecular Functional Materials and Department of Chemistry, The University of Hong Kong, Hong Kong, People's Republic of China
| | - Sammual Yu-Lut Leung
- Institute of Molecular Functional Materials and Department of Chemistry, The University of Hong Kong, Hong Kong, People's Republic of China
| | - Ming-Yi Leung
- Institute of Molecular Functional Materials and Department of Chemistry, The University of Hong Kong, Hong Kong, People's Republic of China
| | - Vivian Wing-Wah Yam
- Institute of Molecular Functional Materials and Department of Chemistry, The University of Hong Kong, Hong Kong, People's Republic of China
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37
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Zhong D, Ying Y, Gui M, Wang C, Zhong H, Zhao H, Wang F. Structure and solvent effects on the stability of platinum(II) acetylide-based supramolecular polymers. J Organomet Chem 2021. [DOI: 10.1016/j.jorganchem.2020.121632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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38
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Moreno-Alcántar G, Aliprandi A, Rouquette R, Pesce L, Wurst K, Perego C, Brüggeller P, Pavan GM, De Cola L. Solvent-Driven Supramolecular Wrapping of Self-Assembled Structures. Angew Chem Int Ed Engl 2021; 60:5407-5413. [PMID: 33247479 PMCID: PMC7986396 DOI: 10.1002/anie.202013474] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 11/18/2020] [Indexed: 12/21/2022]
Abstract
Self‐assembly relies on the ability of smaller and discrete entities to spontaneously arrange into more organized systems by means of the structure‐encoded information. Herein, we show that the design of the media can play a role even more important than the chemical design. The media not only determines the self‐assembly pathway at a single‐component level, but in a very narrow solvent composition, a supramolecular homo‐aggregate can be non‐covalently wrapped by a second component that possesses a different crystal lattice. Such a process has been followed in real time by confocal microscopy thanks to the different emission colors of the aggregates formed by two isolated PtII complexes. This coating is reversible and controlled by the media composition. Single‐crystal X‐ray diffraction and molecular simulations based on coarse‐grained (CG) models allowed the understanding of the properties displayed by the different aggregates. Such findings could result in a new method to construct hierarchical supramolecular structures.
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Affiliation(s)
- Guillermo Moreno-Alcántar
- Institut de Science et d'Ingénierie Supramoléculaires (ISIS), Université de Strasbourg & CNRS, 8 allée Gaspard Monge, 67083, Strasbourg, France
| | - Alessandro Aliprandi
- Institut de Science et d'Ingénierie Supramoléculaires (ISIS), Université de Strasbourg & CNRS, 8 allée Gaspard Monge, 67083, Strasbourg, France
| | - Remi Rouquette
- Institut de Science et d'Ingénierie Supramoléculaires (ISIS), Université de Strasbourg & CNRS, 8 allée Gaspard Monge, 67083, Strasbourg, France
| | - Luca Pesce
- Department of Innovative Technologies, University of Applied Sciences and Arts of Southern Switzerland, Galleria 2, via Cantonale 2c, 6928, Manno, Switzerland
| | - Klaus Wurst
- Center for Chemistry and Biomedicine, University of Innsbruck, Innrain 80-82, 6020, Innsbruck, Austria
| | - Claudio Perego
- Department of Innovative Technologies, University of Applied Sciences and Arts of Southern Switzerland, Galleria 2, via Cantonale 2c, 6928, Manno, Switzerland
| | - Peter Brüggeller
- Center for Chemistry and Biomedicine, University of Innsbruck, Innrain 80-82, 6020, Innsbruck, Austria
| | - Giovanni M Pavan
- Department of Innovative Technologies, University of Applied Sciences and Arts of Southern Switzerland, Galleria 2, via Cantonale 2c, 6928, Manno, Switzerland.,Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129, Torino, Italy
| | - Luisa De Cola
- Institut de Science et d'Ingénierie Supramoléculaires (ISIS), Université de Strasbourg & CNRS, 8 allée Gaspard Monge, 67083, Strasbourg, France.,Institute for Nanotechnology (INT), Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
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39
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Moreno‐Alcántar G, Aliprandi A, Rouquette R, Pesce L, Wurst K, Perego C, Brüggeller P, Pavan GM, De Cola L. Solvent‐Driven Supramolecular Wrapping of Self‐Assembled Structures. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202013474] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Guillermo Moreno‐Alcántar
- Institut de Science et d'Ingénierie Supramoléculaires (ISIS) Université de Strasbourg & CNRS 8 allée Gaspard Monge 67083 Strasbourg France
| | - Alessandro Aliprandi
- Institut de Science et d'Ingénierie Supramoléculaires (ISIS) Université de Strasbourg & CNRS 8 allée Gaspard Monge 67083 Strasbourg France
| | - Remi Rouquette
- Institut de Science et d'Ingénierie Supramoléculaires (ISIS) Université de Strasbourg & CNRS 8 allée Gaspard Monge 67083 Strasbourg France
| | - Luca Pesce
- Department of Innovative Technologies University of Applied Sciences and Arts of Southern Switzerland Galleria 2, via Cantonale 2c 6928 Manno Switzerland
| | - Klaus Wurst
- Center for Chemistry and Biomedicine University of Innsbruck Innrain 80–82 6020 Innsbruck Austria
| | - Claudio Perego
- Department of Innovative Technologies University of Applied Sciences and Arts of Southern Switzerland Galleria 2, via Cantonale 2c 6928 Manno Switzerland
| | - Peter Brüggeller
- Center for Chemistry and Biomedicine University of Innsbruck Innrain 80–82 6020 Innsbruck Austria
| | - Giovanni M. Pavan
- Department of Innovative Technologies University of Applied Sciences and Arts of Southern Switzerland Galleria 2, via Cantonale 2c 6928 Manno Switzerland
- Department of Applied Science and Technology Politecnico di Torino Corso Duca degli Abruzzi 24 10129 Torino Italy
| | - Luisa De Cola
- Institut de Science et d'Ingénierie Supramoléculaires (ISIS) Université de Strasbourg & CNRS 8 allée Gaspard Monge 67083 Strasbourg France
- Institute for Nanotechnology (INT) Karlsruhe Institute of Technology Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
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40
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Obydennov DL, Simbirtseva AE, Piksin SE, Sosnovskikh VY. 2,6-Dicyano-4-pyrone as a Novel and Multifarious Building Block for the Synthesis of 2,6-Bis(hetaryl)-4-pyrones and 2,6-Bis(hetaryl)-4-pyridinols. ACS OMEGA 2020; 5:33406-33420. [PMID: 33403303 PMCID: PMC7774280 DOI: 10.1021/acsomega.0c05357] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Accepted: 12/02/2020] [Indexed: 05/08/2023]
Abstract
In this work, a three-stage and easily scalable synthesis of 2,6-dicyano-4-pyrone (overall yield of 45%) as a new convenient building block has been developed from diethyl acetonedioxalate. It was shown that the transformation with hydroxylamine and [3 + 2]-cycloaddition, in contrast to the reactions with hydrazines, selectively proceed through the attack at the cyano groups without the pyrone ring-opening to give symmetrical and unsymmetrical pyrone-bearing heterocyclic triads containing 1,2,4- and 1,3,4-oxadiazoles as well as tetrazole moieties. The reaction of 2,6-bis(hetaryl)-4-pyrones with ammonia afforded 2,6-bis(hetaryl)pyridines in 63-87% yields. The 4-pyridone/4-pyridinol tautomerism of 2,6-bis(hetaryl)pyridinols and the influence of the nature of adjacent azolyl moieties on this equilibrium have been discussed.
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41
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Helmers I, Ghosh G, Albuquerque RQ, Fernández G. Pfad‐ und Längenkontrolle von supramolekularen Polymeren im wässrigen Medium mittels eines Wasserstoffbrückenschlosses. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202012710] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Ingo Helmers
- Organisch-Chemisches-Institut Westfälische-Wilhelms-Universität Münster Correnstraße 40 48149 Münster Deutschland
| | - Goutam Ghosh
- Organisch-Chemisches-Institut Westfälische-Wilhelms-Universität Münster Correnstraße 40 48149 Münster Deutschland
| | - Rodrigo Q. Albuquerque
- Lehrstuhl für Systemverfahrenstechnik Technische Universität München (TUM) Gregor-Mendel-Straße 4 85354 Freising Deutschland
| | - Gustavo Fernández
- Organisch-Chemisches-Institut Westfälische-Wilhelms-Universität Münster Correnstraße 40 48149 Münster Deutschland
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42
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Liu M, Han Y, Zhong H, Zhang X, Wang F. Supramolecular Chirogenesis Induced by Platinum(II) Tweezers with Excellent Environmental Tolerance. Angew Chem Int Ed Engl 2020; 60:3498-3503. [PMID: 33118695 DOI: 10.1002/anie.202012901] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 10/17/2020] [Indexed: 11/06/2022]
Abstract
Supramolecular chirogenesis has emerged as an effective strategy to access symmetry breaking in artificial systems. However, the chirogenic signals suffer from high susceptibility toward environmental variations. An effective strategy has been developed to address this issue by constructing platinum(II)-based tweezer/guest complexes stabilized by two-fold donor-acceptor and PtII -PtII metal-metal interactions. Upon guest encapsulation, the two pincers on the achiral PtII tweezer undergo a stereospecific twist to minimize steric repulsion, thus locking tweezer/guest complexes into the preferred chiral conformations. The induced chiroptical effects display outstanding solvent and temperature tolerance, ascribed to the balance between electrostatic and desolvation effects for the involved non-covalent interactions. Moreover, hierarchical and multi-component supramolecular assembly of tweezer/guest complexes provide a convenient way to modulate chirogeneic signals for their intensities.
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Affiliation(s)
- Mingyang Liu
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Yifei Han
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Hua Zhong
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Xiaolong Zhang
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Feng Wang
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
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43
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Liu M, Han Y, Zhong H, Zhang X, Wang F. Supramolecular Chirogenesis Induced by Platinum(II) Tweezers with Excellent Environmental Tolerance. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202012901] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Mingyang Liu
- CAS Key Laboratory of Soft Matter Chemistry Department of Polymer Science and Engineering University of Science and Technology of China Hefei Anhui 230026 P. R. China
| | - Yifei Han
- CAS Key Laboratory of Soft Matter Chemistry Department of Polymer Science and Engineering University of Science and Technology of China Hefei Anhui 230026 P. R. China
| | - Hua Zhong
- CAS Key Laboratory of Soft Matter Chemistry Department of Polymer Science and Engineering University of Science and Technology of China Hefei Anhui 230026 P. R. China
| | - Xiaolong Zhang
- CAS Key Laboratory of Soft Matter Chemistry Department of Polymer Science and Engineering University of Science and Technology of China Hefei Anhui 230026 P. R. China
| | - Feng Wang
- CAS Key Laboratory of Soft Matter Chemistry Department of Polymer Science and Engineering University of Science and Technology of China Hefei Anhui 230026 P. R. China
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44
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Horiuchi S, Umakoshi K. Emissive Supramolecular Systems Based on Reversible Bond Formation and Noncovalent Interactions. CHEM REC 2020; 21:469-479. [PMID: 33236813 DOI: 10.1002/tcr.202000125] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 11/05/2020] [Indexed: 12/16/2022]
Abstract
Noncovalent interactions and reversible bond formations are widely seen in natural systems for the construction of sophisticated molecular systems that perform various biological processes. Inspired by the natural systems, luminescent supramolecular systems constructed by coordination-driven self-assembly and homometallic metal-metal interations have been studied increasingly. These supramolecular systems show fascinating luminescent behaviors that are not observed from single components. This review summarizes our progress in the development of two types of unique luminescent supramolecular systems. The mononuclear Pt(II) complex units can sandwich coinage metal ions to form heteropolynuclear complexes involving heterometallic metal-metal interactions. A close proximity of the two or three different metal ions by the noncovalent forces lead to orbital overlapping among the coinage metal ions and the Pt(II) complex units, showing emission color change accompanied with structural transformation and reversible metal binding behaviors. Emissive host-guest systems consisting of mononuclear metal complexes and a hydrogen-bonded capsule are also developed, that show a unique encapsulation-induced emission enhancement (EIEE) behavior.
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Affiliation(s)
- Shinnosuke Horiuchi
- Division of Chemistry and Materials Science, Graduate School of Engineering, Nagasaki University, Bunkyo-machi, Nagasaki, 852-8521, Japan
| | - Keisuke Umakoshi
- Division of Chemistry and Materials Science, Graduate School of Engineering, Nagasaki University, Bunkyo-machi, Nagasaki, 852-8521, Japan
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45
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Zheng Q, Borsley S, Tu T, Cockroft SL. Reversible stimuli-responsive chromism of a cyclometallated platinum(II) complex. Chem Commun (Camb) 2020; 56:14705-14708. [PMID: 33170199 DOI: 10.1039/d0cc06775j] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
We report the reversible chromism and luminescence of a cyclometalated platinum(ii) complex that forms dimers, with close PtPt interactions that can be modulated by solvent and temperature. The precise reversible control may be exploited in future stimuli-responsive chemosensing or optoelectronic devices.
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Affiliation(s)
- Qingshu Zheng
- EaStCHEM School of Chemistry, University of Edinburgh, Joseph Black Building, David Brewster Road, Edinburgh EH9 3FJ, UK. and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, China
| | - Stefan Borsley
- EaStCHEM School of Chemistry, University of Edinburgh, Joseph Black Building, David Brewster Road, Edinburgh EH9 3FJ, UK.
| | - Tao Tu
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, China
| | - Scott L Cockroft
- EaStCHEM School of Chemistry, University of Edinburgh, Joseph Black Building, David Brewster Road, Edinburgh EH9 3FJ, UK.
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46
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Yuan M, Zhang X, Han Y, Wang F, Wang F. Organoplatinum(II)-Based Self-Complementary Molecular Tweezers with Guest-Induced Fluorochromic Behaviors. Inorg Chem 2020; 59:14134-14140. [PMID: 32921054 DOI: 10.1021/acs.inorgchem.0c01899] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Cyclometalated organoplatinum(II) complexes have aroused tremendous interests due to their square-planar geometry and intriguing photophysics. To access multiplatinum systems with more than three cyclometalated organoplatinum(II) units, the traditional covalent synthetic approach suffers from tedious multistep reactions with low overall yield. In comparison, supramolecular assembly can be regarded as an effective strategy toward multiplatinum(II) architectures. Despite the progresses achieved, it is still challenging to fabricate well-ordered supramolecular assemblies with precise numbers of organoplatinum(II) units. Herein, self-complementary dimerized molecular tweezers with four cyclometalated platinum(II) units have been successfully constructed by taking advantage of dual roles of the incorporated 2,2':6',2''-terpyridine unit (serving as the rigid spacer and encapsulated guest). Furthermore, addition of electron-rich carbazoles leads to conversion of the self-complementary structure to molecular tweezer/guest complexes. Such a structural transformation gives rise to the concomitant luminescent color change. The unique guest-induced fluorochromic phenomena, which are seldom reported in the previous host-guest systems, would be promising as tunable luminescent and ratiometric sensing materials.
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Affiliation(s)
- Ming Yuan
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China.,Department of Chemistry, BengBu Medical College, Bengbu 233030, P.R. China
| | - Xiaolong Zhang
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Yifei Han
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Fan Wang
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Feng Wang
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
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47
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Chen Z, Chan MHY, Yam VWW. Stimuli-Responsive Two-Dimensional Supramolecular Polymers Based on Trinuclear Platinum(II) Scaffolds: Reversible Modulation of Photoluminescence, Cavity Size, and Water Permeability. J Am Chem Soc 2020; 142:16471-16478. [PMID: 32909749 DOI: 10.1021/jacs.0c07969] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Here we report the first two-dimensional (2D) supramolecular polymer, which has varying structure and function arising from the perturbation of noncovalent metal···metal interactions in response to acid-base stimuli. This 2D assembly possesses a positively charged, honeycomb-like nanostructure consisting of trinuclear alkynylplatinum(II) terpyridine complexes appended with acid-sensitive dimethylamino groups. Upon addition of acids and bases, reversible switching mediated by protonation and deprotonation of dimethylamino and dimethylammonium moieties intrinsically alters the positive charge density of the constituent cationic units, which causes interior cavities to adaptively adjust their size, accompanied by drastic photoluminescence changes. When water molecules pass through the membranes obtained from 2D supramolecular polymers, the permeating flux can also be tuned by the pH values of the buffer media. This work paves the way toward supramolecularly engineered 2D smart materials with stimuli-responsive properties.
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Affiliation(s)
- Zhen Chen
- Institute of Molecular Functional Materials and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, People's Republic of China
| | - Michael Ho-Yeung Chan
- Institute of Molecular Functional Materials and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, People's Republic of China
| | - Vivian Wing-Wah Yam
- Institute of Molecular Functional Materials and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, People's Republic of China
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48
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Saito D, Ogawa T, Yoshida M, Takayama J, Hiura S, Murayama A, Kobayashi A, Kato M. Intense Red‐Blue Luminescence Based on Superfine Control of Metal–Metal Interactions for Self‐Assembled Platinum(II) Complexes. Angew Chem Int Ed Engl 2020; 59:18723-18730. [PMID: 32666592 DOI: 10.1002/anie.202008383] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2020] [Indexed: 12/11/2022]
Affiliation(s)
- Daisuke Saito
- Department of Chemistry Faculty of Science Hokkaido University North-10 West-8, Kita-ku Sapporo Hokkaido 060-0810 Japan
| | - Tomohiro Ogawa
- Department of Chemistry Faculty of Science Hokkaido University North-10 West-8, Kita-ku Sapporo Hokkaido 060-0810 Japan
- Current address: Institute for Integrated Cell-Materials Sciences Kyoto University Kyoto 606-8501 Japan
| | - Masaki Yoshida
- Department of Chemistry Faculty of Science Hokkaido University North-10 West-8, Kita-ku Sapporo Hokkaido 060-0810 Japan
| | - Junichi Takayama
- Faculty of Information Science and Technology Hokkaido University North-14 West-9, Kita-ku Sapporo Hokkaido 060-0814 Japan
| | - Satoshi Hiura
- Faculty of Information Science and Technology Hokkaido University North-14 West-9, Kita-ku Sapporo Hokkaido 060-0814 Japan
| | - Akihiro Murayama
- Faculty of Information Science and Technology Hokkaido University North-14 West-9, Kita-ku Sapporo Hokkaido 060-0814 Japan
| | - Atsushi Kobayashi
- Department of Chemistry Faculty of Science Hokkaido University North-10 West-8, Kita-ku Sapporo Hokkaido 060-0810 Japan
| | - Masako Kato
- Department of Chemistry Faculty of Science Hokkaido University North-10 West-8, Kita-ku Sapporo Hokkaido 060-0810 Japan
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49
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Saito D, Ogawa T, Yoshida M, Takayama J, Hiura S, Murayama A, Kobayashi A, Kato M. Intense Red‐Blue Luminescence Based on Superfine Control of Metal–Metal Interactions for Self‐Assembled Platinum(II) Complexes. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202008383] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Daisuke Saito
- Department of Chemistry Faculty of Science Hokkaido University North-10 West-8, Kita-ku Sapporo Hokkaido 060-0810 Japan
| | - Tomohiro Ogawa
- Department of Chemistry Faculty of Science Hokkaido University North-10 West-8, Kita-ku Sapporo Hokkaido 060-0810 Japan
- Current address: Institute for Integrated Cell-Materials Sciences Kyoto University Kyoto 606-8501 Japan
| | - Masaki Yoshida
- Department of Chemistry Faculty of Science Hokkaido University North-10 West-8, Kita-ku Sapporo Hokkaido 060-0810 Japan
| | - Junichi Takayama
- Faculty of Information Science and Technology Hokkaido University North-14 West-9, Kita-ku Sapporo Hokkaido 060-0814 Japan
| | - Satoshi Hiura
- Faculty of Information Science and Technology Hokkaido University North-14 West-9, Kita-ku Sapporo Hokkaido 060-0814 Japan
| | - Akihiro Murayama
- Faculty of Information Science and Technology Hokkaido University North-14 West-9, Kita-ku Sapporo Hokkaido 060-0814 Japan
| | - Atsushi Kobayashi
- Department of Chemistry Faculty of Science Hokkaido University North-10 West-8, Kita-ku Sapporo Hokkaido 060-0810 Japan
| | - Masako Kato
- Department of Chemistry Faculty of Science Hokkaido University North-10 West-8, Kita-ku Sapporo Hokkaido 060-0810 Japan
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50
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Li R, Xu FF, Gong ZL, Zhong YW. Thermo-responsive light-emitting metal complexes and related materials. Inorg Chem Front 2020. [DOI: 10.1039/d0qi00779j] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This review discusses the fundamentals and design strategies for the development of thermo-responsive metal–ligand coordination materials and the applications of these materials in temperature sensing, bioimaging, information security, etc.
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Affiliation(s)
- Rui Li
- Beijing National Laboratory for Molecular Sciences
- CAS Key Laboratory of Photochemistry
- CAS Research/Education Center for Excellence in Molecular Sciences
- Institute of Chemistry
- Chinese Academy of Sciences
| | - Fa-Feng Xu
- Beijing National Laboratory for Molecular Sciences
- CAS Key Laboratory of Photochemistry
- CAS Research/Education Center for Excellence in Molecular Sciences
- Institute of Chemistry
- Chinese Academy of Sciences
| | - Zhong-Liang Gong
- Beijing National Laboratory for Molecular Sciences
- CAS Key Laboratory of Photochemistry
- CAS Research/Education Center for Excellence in Molecular Sciences
- Institute of Chemistry
- Chinese Academy of Sciences
| | - Yu-Wu Zhong
- Beijing National Laboratory for Molecular Sciences
- CAS Key Laboratory of Photochemistry
- CAS Research/Education Center for Excellence in Molecular Sciences
- Institute of Chemistry
- Chinese Academy of Sciences
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