1
|
Msellem P, Dekthiarenko M, Hadj Seyd N, Vives G. Switchable molecular tweezers: design and applications. Beilstein J Org Chem 2024; 20:504-539. [PMID: 38440175 PMCID: PMC10910529 DOI: 10.3762/bjoc.20.45] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Accepted: 02/12/2024] [Indexed: 03/06/2024] Open
Abstract
Switchable molecular tweezers are a unique class of molecular switches that, like their macroscopic analogs, exhibit mechanical motion between an open and closed conformation in response to stimuli. Such systems constitute an essential component of artificial molecular machines. This review will present selected examples of switchable molecular tweezers and their potential applications. The first part will be devoted to chemically responsive tweezers, including stimuli such as pH, metal coordination, and anion binding. Then, redox-active and photochemical tweezers will be presented.
Collapse
Affiliation(s)
- Pablo Msellem
- Sorbonne Université, UMR CNRS 8232, Institut Parisien de Chimie Moléculaire, 4 place Jussieu, 75005, Paris, France
| | - Maksym Dekthiarenko
- Sorbonne Université, UMR CNRS 8232, Institut Parisien de Chimie Moléculaire, 4 place Jussieu, 75005, Paris, France
| | - Nihal Hadj Seyd
- Sorbonne Université, UMR CNRS 8232, Institut Parisien de Chimie Moléculaire, 4 place Jussieu, 75005, Paris, France
| | - Guillaume Vives
- Sorbonne Université, UMR CNRS 8232, Institut Parisien de Chimie Moléculaire, 4 place Jussieu, 75005, Paris, France
| |
Collapse
|
2
|
Gupta MN, Uversky VN. Biological importance of arginine: A comprehensive review of the roles in structure, disorder, and functionality of peptides and proteins. Int J Biol Macromol 2024; 257:128646. [PMID: 38061507 DOI: 10.1016/j.ijbiomac.2023.128646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 12/02/2023] [Accepted: 12/04/2023] [Indexed: 01/26/2024]
Abstract
Arginine shows Jekyll and Hyde behavior in several respects. It participates in protein folding via ionic and H-bonds and cation-pi interactions; the charge and hydrophobicity of its side chain make it a disorder-promoting amino acid. Its methylation in histones; RNA binding proteins; chaperones regulates several cellular processes. The arginine-centric modifications are important in oncogenesis and as biomarkers in several cardiovascular diseases. The cross-links involving arginine in collagen and cornea are involved in pathogenesis of tissues but have also been useful in tissue engineering and wound-dressing materials. Arginine is a part of active site of several enzymes such as GTPases, peroxidases, and sulfotransferases. Its metabolic importance is obvious as it is involved in production of urea, NO, ornithine and citrulline. It can form unusual functional structures such as molecular tweezers in vitro and sprockets which engage DNA chains as part of histones in vivo. It has been used in design of cell-penetrating peptides as drugs. Arginine has been used as an excipient in both solid and injectable drug formulations; its role in suppressing opalescence due to liquid-liquid phase separation is particularly very promising. It has been known as a suppressor of protein aggregation during protein refolding. It has proved its usefulness in protein bioseparation processes like ion-exchange, hydrophobic and affinity chromatographies. Arginine is an amino acid, whose importance in biological sciences and biotechnology continues to grow in diverse ways.
Collapse
Affiliation(s)
- Munishwar Nath Gupta
- Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology, Hauz Khas, New Delhi 110016, India
| | - Vladimir N Uversky
- Department of Molecular Medicine, USF Health Byrd Alzheimer's Research Institute, Morsani College of Medicine, University of South Florida, Tampa, FL 33612, USA.
| |
Collapse
|
3
|
Lee H, Lee D. Assembling Molecular Clips To Build π-Stacks. Chemistry 2023; 29:e202302523. [PMID: 37658276 DOI: 10.1002/chem.202302523] [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: 08/03/2023] [Revised: 09/01/2023] [Accepted: 09/01/2023] [Indexed: 09/03/2023]
Abstract
Nature utilizes an intimate stacking of aromatic motifs to construct functional structures, as demonstrated in protein folding and polynucleotide assembly. However, organized π-stacks of artificial molecules are difficult to build, primarily due to the weak, non-directional, and context-sensitive nature of van der Waals forces. To overcome these challenges, chemists have invented ingenious architectural designs to construct π-stacked supramolecular assemblies using clip-like molecules. This Concept article focuses on molecular clips that enable precise spatial control over assembly patterns, beyond the scope of simple host-guest chemistry. Different design strategies are analyzed and compared that leverage non-covalent interactions to create multi-layer π-stacks. Particular emphasis is placed on the choice of spine units as they play a crucial role in controlling the (i) spacing, (ii) orientation, and (iii) conformational pre-organization of linked aromatics to achieve long-range spatial ordering.
Collapse
Affiliation(s)
- Hyun Lee
- Department of Chemistry, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Korea
| | - Dongwhan Lee
- Department of Chemistry, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Korea
| |
Collapse
|
4
|
Ko S, Kim JY, Park JY, Jung YJ, Choi MJ, Jin KS, Kim Y, Lim YB, Jeong WJ. Modulating the folding and binding of peptides using a stimuli-responsive molecular tweezer. Chem Sci 2023; 14:9600-9607. [PMID: 37712040 PMCID: PMC10498507 DOI: 10.1039/d3sc03758d] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Accepted: 08/06/2023] [Indexed: 09/16/2023] Open
Abstract
This study presents the development of a β-hairpin (tryptophan zipper, Trpzip)-based molecular tweezer (MT) that can control the folding and binding of α-helical peptides. When an α-helix isolated from the p53 protein was conjugated with Trpzip in an optimized macrocyclic structure, the folded β-hairpin stabilized the helix conformation through the side chain-to-side chain stapling strategy, which notably enhanced target (hDM2) affinity of the peptide. On the other hand, the helicity and binding affinity were significantly reduced when the hairpin was unfolded by a redox stimulus. This stimulus-responsive property was translated into the effective capture and release of model multivalent biomaterials, hDM2-gold nanoparticle conjugates. Since numerous protein interactions are mediated by α-helical peptides, these results suggest that the β-hairpin-based MT holds great potential to be utilized in various biomedical applications, such as protein interaction inhibition and cancer biomarker (e.g., circulating tumor cells and exosomes) detection.
Collapse
Affiliation(s)
- Sooho Ko
- Department of Materials Science and Engineering, Yonsei University Seoul 03722 Republic of Korea
| | - Joo-Young Kim
- Department of Biological Sciences and Bioengineering, Inha University Incheon 22212 Republic of Korea
| | - Jung Yeon Park
- KU-KIST Graduate School of Converging Science and Technology, Department of Integrative Energy Engineering, Korea University Seoul 02841 Republic of Korea
| | - You-Jin Jung
- Department of Materials Science and Engineering, Yonsei University Seoul 03722 Republic of Korea
| | - Min-Jae Choi
- Department of Chemical & Biochemical Engineering, Dongguk University Seoul 06420 Republic of Korea
| | - Kyeong Sik Jin
- Pohang Accelerator Laboratory, Pohang University of Science and Technology Pohang 790-784 Republic of Korea
| | - Yongju Kim
- KU-KIST Graduate School of Converging Science and Technology, Department of Integrative Energy Engineering, Korea University Seoul 02841 Republic of Korea
| | - Yong-Beom Lim
- Department of Materials Science and Engineering, Yonsei University Seoul 03722 Republic of Korea
| | - Woo-Jin Jeong
- Department of Biological Sciences and Bioengineering, Inha University Incheon 22212 Republic of Korea
- Department of Biological Engineering, Inha University Incheon 22212 Republic of Korea
| |
Collapse
|
5
|
Mohammed Elgadi GS, Elsegood MRJ, Patel M, Netz PA, de Oliveira TE, Kimber MC. A Family of Bisnaphthyl C 2-Symmetric and Asymmetric Clefts: Synthesis, Solid-State Structure, and Calculation of the Interplanar Angle. J Org Chem 2023; 88:3965-3969. [PMID: 36854174 PMCID: PMC10028689 DOI: 10.1021/acs.joc.2c03002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2023]
Abstract
The synthesis of a new family of naphthalenoid C2-symmetric clefts has been realized through a four-step synthetic sequence giving three C2-symmetric clefts and a rare nonsymmetric example. Subsequently, stereoselective reduction of the carbonyl groups at C-8 and C-16 then provides cleft molecules with hydrogen bonding potential. Using single-crystal X-ray and computational analysis, the cleft angle of the dione has been determined.
Collapse
Affiliation(s)
| | - Mark R J Elsegood
- The Department of Chemistry, School of Science, Loughborough University, LE11 3TU Loughborough, U.K
| | - Miheal Patel
- The Department of Chemistry, School of Science, Loughborough University, LE11 3TU Loughborough, U.K
| | - Paulo A Netz
- Grupo de Química Teórica, Instituto de Química, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS CEP 91501-970, Brazil
| | - Tiago E de Oliveira
- Departmento de Farmacociências, Universidade Federal de Ciências de Saúde Porto Alegre, Porto Alegre, RS 90050-170, Brazil
| | - Marc C Kimber
- The Department of Chemistry, School of Science, Loughborough University, LE11 3TU Loughborough, U.K
| |
Collapse
|
6
|
Ibáñez S, Peris E. "Lock and Key" and "Induced-Fit" Host-Guest Models in Two Digold(I)-Based Metallotweezers. Inorg Chem 2023; 62:1820-1826. [PMID: 35360901 PMCID: PMC9974064 DOI: 10.1021/acs.inorgchem.2c00677] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Two different metallotweezers, each with two pyrene-imidazolylidene-gold(I) arms, were used as hosts for a series of planar aromatic guests. The metallotweezer with a dibenzoacridinebis(alkynyl) spacer (1) orients the two pyrene-imidazolylidene-gold(I) arms in a parallel disposition, with an interpanel distance of about 7 Å. The second metallotweezer (2) contains a carbazolylbis(alkynyl) spacer that directs the two pyrene panels in a diverging orientation. Determination of the association constants via 1H NMR titrations demonstrates that the binding strength shown by 1 is significantly larger than that found by 2, with binding affinities as large as 104 M-1 (in CDCl3), for the encapsulation of N,N'-dimethylnaphthalenetetracarboxydiimide with 1. The differences in the binding affinities are due to binding models associated with formation of the related host-guest complexes. While 1 operates via a "lock and key" model, in which the host does not suffer distortions upon formation of the inclusion complex, 2 operates via a guest-induced fit model. The large association constants shown by 1 with two planar guests were used for promotion of the template-directed synthesis of 1, which in the absence of an external template is produced in an equimolecular mixture with its self-aggregated congener, clippane [12]. This observation strongly suggests that the mechanically interlocked clippane is formed through a self-template-directed mechanism, while bonds are broken/formed during the synthetic protocol.
Collapse
Affiliation(s)
- Susana Ibáñez
- Institute
of Advanced Materials, Centro de Innovación en Química
Avanzada, Universitat Jaume I, Avenida Vicente Sos Baynat s/n, Castellón E-12071, Spain
| | - Eduardo Peris
- Institute
of Advanced Materials, Centro de Innovación en Química
Avanzada, Universitat Jaume I, Avenida Vicente Sos Baynat s/n, Castellón E-12071, Spain
| |
Collapse
|
7
|
Wezenberg SJ. Photoswitchable molecular tweezers: isomerization to control substrate binding, and what about vice versa? Chem Commun (Camb) 2022; 58:11045-11058. [PMID: 36106956 PMCID: PMC9531670 DOI: 10.1039/d2cc04329g] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Accepted: 08/31/2022] [Indexed: 11/21/2022]
Abstract
The linkage of two identical binding motifs by a molecular photoswitch has proven to be a straightforward and versatile strategy to control substrate binding affinity by light. Stimulus control of binding properties in artificial receptors is partly inspired by the dynamic behavior of proteins and is highly attractive as it could, for example, improve extraction processes and allow (de)activation of membrane transport on demand. This feature article summarizes the development and design principles of molecular tweezers containing a molecular photoswitch as the core unit. Besides the control of binding affinity by isomerization, the effect of substrate binding on the isomerization behavior is discussed where data is available. While the latter often receives less attention, it could be of benefit in the future creation of multi-stimuli-controlled molecular switching and machine-like systems.
Collapse
Affiliation(s)
- Sander J Wezenberg
- Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CC Leiden, The Netherlands.
| |
Collapse
|
8
|
Sawanaka Y, Yamashina M, Ohtsu H, Toyota S. A self-complementary macrocycle by a dual interaction system. Nat Commun 2022; 13:5648. [PMID: 36163173 PMCID: PMC9512892 DOI: 10.1038/s41467-022-33357-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Accepted: 09/14/2022] [Indexed: 11/23/2022] Open
Abstract
Self-complementary assembly is one of the most promising phenomena for the formation of discrete assemblies, e.g., proteins and capsids. However, self-complementary assembly based on multiple host-guest systems has been scarcely reported due to the difficulty in controlling each assembly. Herein, we report a dual interaction system in which the key assembly direction is well regulated by both π-π stacking and hydrogen bonding to construct a self-complementary macrocycle. Continuous host-guest behavior of anthracene-based molecular tweezers during crystallization leads to successful construction of a cyclic hexamer, which is reminiscent of Kekulé’s monkey model. Furthermore, the cyclic hexamer in a tight and triple-layered fashion shows hierarchical assembly into cuboctahedron and rhombohedral assemblies in the presence of trifluoroacetic acid. Our findings would be potentially one of metal-free strategies for constructing anthracene-based supramolecular assemblies with higher-order structure. In nature, HIV capsid consists of single class of protein unit by self-complementarity. Here, the authors find that a molecular tweezer forms a cyclic hexamer by its continuous host-guest behavior, and constructs a large cuboctahedron by hierarchical assembly.
Collapse
Affiliation(s)
- Yuta Sawanaka
- Department of Chemistry, School of Science, Tokyo Institute of Technology, Tokyo, Japan
| | - Masahiro Yamashina
- Department of Chemistry, School of Science, Tokyo Institute of Technology, Tokyo, Japan.
| | - Hiroyoshi Ohtsu
- Department of Chemistry, School of Science, Tokyo Institute of Technology, Tokyo, Japan
| | - Shinji Toyota
- Department of Chemistry, School of Science, Tokyo Institute of Technology, Tokyo, Japan.
| |
Collapse
|
9
|
Yeung JY, Kong FK, Hau FK, Chan MH, Ng M, Leung M, Yam VW. Solvent‐Dependent Supramolecular Host–Guest Assemblies of Platinum(II) Tweezers and a Guest System: From Discrete Molecules to High‐Ordered Oligomers. Angew Chem Int Ed Engl 2022; 61:e202207313. [DOI: 10.1002/anie.202207313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Indexed: 11/09/2022]
Affiliation(s)
- Jenny Yuk‐Wa Yeung
- Institute of Molecular Functional Materials Department of Chemistry The University of Hong Kong Pokfulam Road Hong Kong P. R. China
| | - Fred Ka‐Wai Kong
- Institute of Molecular Functional Materials Department of Chemistry The University of Hong Kong Pokfulam Road Hong Kong P. R. China
| | - Franky Ka‐Wah Hau
- Institute of Molecular Functional Materials Department of Chemistry The University of Hong Kong Pokfulam Road Hong Kong P. R. China
| | - Michael Ho‐Yeung Chan
- Institute of Molecular Functional Materials Department of Chemistry The University of Hong Kong Pokfulam Road Hong Kong P. R. China
| | - Maggie Ng
- Institute of Molecular Functional Materials Department of Chemistry The University of Hong Kong Pokfulam Road Hong Kong P. R. China
| | - Ming‐Yi Leung
- Institute of Molecular Functional Materials Department of Chemistry The University of Hong Kong Pokfulam Road Hong Kong P. R. China
| | - Vivian Wing‐Wah Yam
- Institute of Molecular Functional Materials Department of Chemistry The University of Hong Kong Pokfulam Road Hong Kong P. R. China
| |
Collapse
|
10
|
Helttunen K. Anion Responsive Molecular Switch Based on a Doubly‐Strapped Calix[4]pyrrole. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Kaisa Helttunen
- University of Jyväskylä Department of Chemistry, Nanoscience Center P.O.Box 35 FI-40013 University of Jyvaskyla FINLAND
| |
Collapse
|
11
|
Yeung JYW, Kong FKW, Hau FKW, Chan MHY, Ng M, Leung MY, Yam VWW. Solvent‐Dependent Supramolecular Host‐Guest Assemblies of Platinum(II) Tweezers and a Guest System: From Discrete Molecules to High‐Ordered Oligomers. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202207313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | | | | | | | - Maggie Ng
- The University of Hong Kong Chemistry CHINA
| | | | - Vivian W. W. Yam
- The University of Hong Kong Department of Chemistry Pokfulam RoadChong Yuet Ming Chemistry Building --- Hong Kong CHINA
| |
Collapse
|
12
|
Devi M, Paul S. The chaotropic effect of ions on the self-aggregating propensity of Whitlock's molecular tweezers. Phys Chem Chem Phys 2022; 24:14452-14471. [PMID: 35661176 DOI: 10.1039/d2cp00033d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Molecular tweezers feature the first class of artificial receptors to pique the interest of researchers and emerge as an effective therapeutic candidate. The exceptional structure and exquisite binding specificity of tweezers establish this overall class of receptors as a promising tool, with abundant applications. However, their inclination to self-aggregate by mutual π-π stacking interactions of their aromatic arms diminishes their efficacy as a therapeutic candidate. Therefore, following up on sporadic studies, since the discovery of the Hofmeister series, on the ability of ions to either solvate (salting-in) or induce aggregation (salting-out) of hydrophobic solutes, the notions of ion-specificity effects are utilized on tweezer moieties. The impacts of three different aluminum salts bearing anions Cl-, ClO4- and SCN- on the self-association propensity of Whitlock's caffeine-pincered molecular tweezers are investigated, with a specific emphasis placed on elucidating the varied behavior of the ions on the hydration ability of tweezers. The comparative investigation is conducted employing a series of all-atom molecular dynamics simulations of five tweezer molecules in pure water and three salt solutions, at two different concentrations each, maintaining a temperature of 300 K and a pressure of 1 atm, respectively. Radial distribution functions, coordination numbers, and SASA calculations display a steady reduction in the aggregation proclivity of the receptor molecules with an increase in salt concentration, as progressed along the Hofmeister series. Orientational preferences between the tweezer arms reveal a disruptive effect in the regular π-π stacking interactions, in the presence of high concentrations of ClO4- and SCN- ions, while preferential interactions and tetrahedral order parameters unveil the underlying mechanism, by which the anions alter the solubility of the hydrophobic molecules. Overall, it is observed that SCN- exhibits the highest salting-in effect, followed by ClO4-, with both anions inhibiting tweezer aggregation through different mechanisms. ClO4- ions impart an effect by moderately interacting with the solute molecules as well as modifying the water structure of the bulk solution promoting solvation, whereas, SCN- ions engage entirely in interaction with specific tweezer sites. Cl- being the most charge-dense of the three anionic species experiences stronger hydration and therefore, imparts a very negligible salting-in effect.
Collapse
Affiliation(s)
- Madhusmita Devi
- Department of Chemistry, Indian Institute of Technology, Guwahati Assam, 781039, India.
| | - Sandip Paul
- Department of Chemistry, Indian Institute of Technology, Guwahati Assam, 781039, India.
| |
Collapse
|
13
|
Ibáñez S. The New Di-Gold Metallotweezer Based on an Alkynylpyridine System. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27123699. [PMID: 35744825 PMCID: PMC9227567 DOI: 10.3390/molecules27123699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Revised: 06/06/2022] [Accepted: 06/07/2022] [Indexed: 11/16/2022]
Abstract
We developed a simple method to prepare one gold-based metallotweezer with two planar Au-pyrene-NHC arms bound by a 2,6-bis(3-ethynyl-5-tert-butylphenyl)pyridine unit. This metallotweezer is able to bind a series of polycyclic aromatic hydrocarbons through the π-stacking interactions between the polyaromatic guests and the pyrene moieties of the NHC ligands. The metallotweezer was also used as a host for the encapsulation of planar metal complexes, such as the Au(III) complex [Au(C^N^C)(C≡CC6H4-OCH3-p)], for which there is a large binding constant of 946 M−1.
Collapse
Affiliation(s)
- Susana Ibáñez
- Institute of Advanced Materials (INAM), Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universitat Jaume I, Av. Vicente Sos Baynat s/n, 12071 Castellón, Spain
| |
Collapse
|
14
|
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.
Collapse
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
| |
Collapse
|
15
|
Jozeliu Naitė A, Javorskis T, Vaitkevičius V, Klimavičius V, Orentas E. Fully Supramolecular Chiral Hydrogen-Bonded Molecular Tweezer. J Am Chem Soc 2022; 144:8231-8241. [PMID: 35500199 DOI: 10.1021/jacs.2c01455] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Molecular tweezers are open-ended, cavity-possessing U-shaped molecular architectures with high potential for various applications in supramolecular chemistry. Their covalent synthesis, however, is often tedious and the structures obtained lack structural responsiveness beyond the limited conformational flexibility of the scaffold. Herein we present a proof-of-concept study on the design, synthesis, assembly, and transformations of a novel supramolecular construct─a fully noncovalent molecular tweezer. The supramolecular tweezer was assembled from a set of four building blocks, composed of two identical molecular angle bars and two flat aromatic extension wings, using hydrogen bonding only. The chirality-assisted aggregation process was utilized to ensure scaffold bending directionality using enantiomerically pure bicyclic angle bars. To address the challenges associated with shifting of the equilibrium from strong cooperative narcissistic self-sorting of self-complementary angle bars in cyclic aggregates toward integrative self-sorting in molecular tweezers, a rational desymmetrization strategy was applied. The dynamic supramolecular tweezer has been shown to display rich supramolecular chemistry, allowing for stimuli-responsive change in aggregate topology and solvent-responsive supramolecular polymerization.
Collapse
Affiliation(s)
- Augustina Jozeliu Naitė
- Department of Organic Chemistry, Vilnius University, Naugarduko 24, LT-03225 Vilnius, Lithuania
| | - Tomas Javorskis
- Department of Organic Chemistry, Vilnius University, Naugarduko 24, LT-03225 Vilnius, Lithuania
| | - Vytenis Vaitkevičius
- Department of Organic Chemistry, Vilnius University, Naugarduko 24, LT-03225 Vilnius, Lithuania
| | | | - Edvinas Orentas
- Department of Organic Chemistry, Vilnius University, Naugarduko 24, LT-03225 Vilnius, Lithuania
| |
Collapse
|
16
|
Ibáñez S, Vicent C, Peris E. Clippane: A Mechanically Interlocked Molecule (MIM) Based on Molecular Tweezers. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202112513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Susana Ibáñez
- Institute of Advanced Materials (INAM) Universitat Jaume I Av. Vicente Sos Baynat s/n 12071 Castellón Spain
| | - Cristian Vicent
- Servei Central d'Instrumentació Científica (SCIC) Universitat, Jaume I Avda. Sos Baynat s/n 12006 Castellón Spain
| | - Eduardo Peris
- Institute of Advanced Materials (INAM) Universitat Jaume I Av. Vicente Sos Baynat s/n 12071 Castellón Spain
| |
Collapse
|
17
|
Glutaraldehyde-cross-linked chitosan-alginate composite for organic dyes removal from aqueous solutions. Int J Biol Macromol 2021; 190:862-875. [PMID: 34517029 DOI: 10.1016/j.ijbiomac.2021.09.026] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Revised: 08/29/2021] [Accepted: 09/05/2021] [Indexed: 11/20/2022]
Abstract
We present an approach for synthesis of a micro-porous composite of two well-known biopolymers, namely chitosan and alginate, using glutaraldehyde as the cross-linking agent. Alginate and chitosan were pre-treated before being mixed, and the two biopolymers' proportions were also monitored. Chitosan was modified using aniline with the help of formaldehyde crosslinker and then the twizer was further crosslinked with alginate using glutaraldehyde. The synthesized composite, glutaraldehyde cross-linked chitosan-alginate composite [(Cs-F-An)-G-Al] was characterized using spectral techniques and employed as a potential adsorbent for three dyes namely Brilliant green, Methyl orange and Patent Blue V. The pHPZC of the material was 7.5 and the maximum monolayer adsorption capacity (Qmax) was found to be 235.82, 198.09 and 117.34 mg g-1 for BG (at pH 8.0), MO (at pH 6.0) and PBV (at pH 3.0) respectively. It was found that the adsorption process follows a Freundlich adsorption isotherm and pseudo second order kinetics. A thermodynamic study revealed that the process of adsorption was enthalpy-driven and spontaneous in nature. Interestingly, the values of the adsorption capacity obtained in column adsorption method are in close agreement with those obtained in batch adsorption experiments, which shows the potential of the synthesized composite for uptake of dyes.
Collapse
|
18
|
Ibáñez S, Vicent C, Peris E. Clippane: A Mechanically Interlocked Molecule (MIM) Based on Molecular Tweezers. Angew Chem Int Ed Engl 2021; 61:e202112513. [PMID: 34633757 DOI: 10.1002/anie.202112513] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Indexed: 12/15/2022]
Abstract
In this study we report the preparation of a new mechanically interlocked molecule formed by the self-aggregation of two metallotweezers composed by two pyrene-imidazolylidene gold(I) arms and a pyridine-centered pentacyclic bis-alkynyl linker. The mechanically interlocked nature of this molecule arises from the presence of the bulky tert-butyl groups attached to the sides of the pyrene moieties of the arms of the tweezer, which act as stoppers avoiding the dissociation of the self-aggregated metallotweezer dimer once it is formed. By combining experimental techniques, we were able to confirm the mechanically interlocked nature of this molecule in solution, in the gas phase and in the solid state. The behavior of the tert-butyl substituted tweezer differs greatly form that shown by the tweezer lacking of these bulky groups, whose dimeric structure is in equilibrium with the monomeric structure, therefore not showing any mechanical coercion that avoids the disassembly of the self-aggregated structure.
Collapse
Affiliation(s)
- Susana Ibáñez
- Institute of Advanced Materials (INAM), Universitat Jaume I, Av. Vicente Sos Baynat s/n, 12071, Castellón, Spain
| | - Cristian Vicent
- Servei Central d'Instrumentació Científica (SCIC), Universitat, Jaume I, Avda. Sos Baynat s/n, 12006, Castellón, Spain
| | - Eduardo Peris
- Institute of Advanced Materials (INAM), Universitat Jaume I, Av. Vicente Sos Baynat s/n, 12071, Castellón, Spain
| |
Collapse
|
19
|
Binding Properties of a Dinuclear Zinc(II) Salen-Type Molecular Tweezer with a Flexible Spacer in the Formation of Lewis Acid-Base Adducts with Diamines. INORGANICS 2021. [DOI: 10.3390/inorganics9060049] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
In this paper we report the binding properties, by combined 1H NMR, optical absorption, and fluorescence studies, of a molecular tweezer composed of two Zn(salen)-type Schiff-base units connected by a flexible spacer, towards a series of ditopic diamines having a strong Lewis basicity, with different chain length and rigidity. Except for the 1,2-diaminoethane, in all other cases the formation of stable 1:1 Lewis acid-base adducts with large binding constants is demonstrated. For α,ω-aliphatic diamines, binding constants progressively increase with the increasing length of the alkyl chain, thanks to the flexible nature of the spacer and the parallel decreased conformational strain upon binding. Stable adducts are also found even for short diamines with rigid molecular structures. Given their preorganized structure, these latter species are not subjected to loss of degrees of freedom. The binding characteristics of the tweezer have been exploited for the colorimetric and fluorometric selective and sensitive detection of piperazine.
Collapse
|
20
|
Jones CD, Kershaw Cook LJ, Marquez-Gamez D, Luzyanin KV, Steed JW, Slater AG. High-Yielding Flow Synthesis of a Macrocyclic Molecular Hinge. J Am Chem Soc 2021; 143:7553-7565. [PMID: 33961419 PMCID: PMC8397308 DOI: 10.1021/jacs.1c02891] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
![]()
Many molecular machines
are built from modular components with
well-defined motile capabilities, such as axles and wheels. Hinges
are particularly useful, as they provide the minimum flexibility needed
for a simple and pronounced conformational change. Compounds with
multiple stable conformers are common, but molecular hinges almost
exclusively operate via dihedral rotations rather than truly hinge-like
clamping mechanisms. An ideal molecular hinge would better reproduce
the behavior of hinged devices, such as gates and tweezers, while
remaining soluble, scalable, and synthetically versatile. Herein,
we describe two isomeric macrocycles with clamp-like open and closed
geometries, which crystallize as separate polymorphs but interconvert
freely in solution. An unusual one-pot addition cyclization reaction
was used to produce the macrocycles on a multigram scale from inexpensive
reagents, without supramolecular templating or high-dilution conditions.
Using mechanistic information from NMR kinetic studies and at-line
mass spectrometry, we developed a semicontinuous flow synthesis with
maximum conversions of 85–93% and over 80% selectivity for
a single isomer. The macrocycles feature voids that are sterically
protected from guests, including reactive species such as fluoride
ions, and could therefore serve as chemically inert hinges for adaptive
supramolecular receptors and flexible porous materials.
Collapse
Affiliation(s)
- Christopher D Jones
- Department of Chemistry and Materials Innovation Factory, University of Liverpool, Crown Street, Liverpool L69 7ZD, U.K
| | - Laurence J Kershaw Cook
- Department of Chemistry and Materials Innovation Factory, University of Liverpool, Crown Street, Liverpool L69 7ZD, U.K
| | - David Marquez-Gamez
- Department of Chemistry and Materials Innovation Factory, University of Liverpool, Crown Street, Liverpool L69 7ZD, U.K
| | - Konstantin V Luzyanin
- Department of Chemistry and Materials Innovation Factory, University of Liverpool, Crown Street, Liverpool L69 7ZD, U.K
| | - Jonathan W Steed
- Department of Chemistry, Durham University, South Road, Durham DH1 3LE, U.K
| | - Anna G Slater
- Department of Chemistry and Materials Innovation Factory, University of Liverpool, Crown Street, Liverpool L69 7ZD, U.K
| |
Collapse
|
21
|
Selective Recognition of Amino Acids and Peptides by Small Supramolecular Receptors. Molecules 2020; 26:molecules26010106. [PMID: 33379401 PMCID: PMC7796322 DOI: 10.3390/molecules26010106] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 12/14/2020] [Accepted: 12/22/2020] [Indexed: 12/30/2022] Open
Abstract
To this day, the recognition and high affinity binding of biomolecules in water by synthetic receptors remains challenging, while the necessity for systems for their sensing, transport and modulation persists. This problematic is prevalent for the recognition of peptides, which not only have key roles in many biochemical pathways, as well as having pharmacological and biotechnological applications, but also frequently serve as models for the study of proteins. Taking inspiration in nature and on the interactions that occur between several receptors and peptide sequences, many researchers have developed and applied a variety of different synthetic receptors, as is the case of macrocyclic compounds, molecular imprinted polymers, organometallic cages, among others, to bind amino acids, small peptides and proteins. In this critical review, we present and discuss selected examples of synthetic receptors for amino acids and peptides, with a greater focus on supramolecular receptors, which show great promise for the selective recognition of these biomolecules in physiological conditions. We decided to focus preferentially on small synthetic receptors (leaving out of this review high molecular weight polymeric systems) for which more detailed and accurate molecular level information regarding the main structural and thermodynamic features of the receptor biomolecule assemblies is available.
Collapse
|
22
|
Li H, Guan Q, Jia Z, Wang X. Theoretical study of switching characteristics of molecular tweezers based on bis(Zn-salphen). J Mol Model 2020; 26:265. [DOI: 10.1007/s00894-020-04527-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Accepted: 08/31/2020] [Indexed: 10/23/2022]
|
23
|
Ibáñez S, Poyatos M, Peris E. N-Heterocyclic Carbenes: A Door Open to Supramolecular Organometallic Chemistry. Acc Chem Res 2020; 53:1401-1413. [PMID: 32644769 DOI: 10.1021/acs.accounts.0c00312] [Citation(s) in RCA: 86] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The field of metallosupramolecular chemistry is clearly dominated by the use of O-, N-, and P-donor Werner-type polydentate ligands. These molecular architectures are of high interest because of their wide range of applications, which include molecular encapsulation, stabilization of reactive species, supramolecular catalysis, and drug delivery, among others. Only recently, organometallic ligands have allowed the preparation of a variety of supramolecular coordination complexes, and the term supramolecular organometallic complexes (SOCs) is gaining space within the field of metallosupramolecular chemistry. While the early examples of SOCs referred to supramolecular architectures mostly containing bisalkenyl, diphenyl, or bisalkynyl linkers, the development of SOCs during the past decade has been boosted by the parallel development of multidentate N-heterocyclic carbene (NHC) ligands. The first examples of NHC-based SOCs referred to supramolecular assemblies based on polydentate NHC ligands bound to group 11 metals. However, during the last 10 years, several planar poly-NHC ligands containing extended π-conjugated systems have facilitated the formation of a large variety of architectures in which the supramolecular assemblies can contain metals other than Cu, Ag, and Au. Such ligands are Janus di-NHCs and trigonal-planar tris-NHCs-most of them prepared by our research group-which have allowed the preparation of a vast range of NHC-based metallosupramolecular compounds with interesting host-guest chemistry properties. Although the number of SOCs has increased in the past few years, their use for host-guest chemistry purposes is still in its earliest infancy. In this Account, we describe the achievements that we have made during the last 4 years toward broadening the applications of planar extended π-conjugated NHC ligands for the preparation of organometallic-based supramolecular structures, including their use as hosts for some selected organic and inorganic guests, together with the catalytic properties displayed by some selected host-guest inclusion complexes. Our contribution describes the design of several Ni-, Pd-, and Au-based metallorectangles and metalloprisms, which we used for the encapsulation of several organic substrates, such as polycyclic aromatic hydrocarbons (PAHs) and fullerenes. The large binding affinities found are ascribed to the incorporation of two cofacial panels with large π-conjugated systems, which provide the optimum conditions for guest recognition by π-π-stacking interactions. We also describe a series of digold(I) metallotweezers for the recognition of organic and inorganic substrates. These metallotweezers were used for the recognition of "naked" metal cations and polycyclic aromatic hydrocarbons. The recognition properties of these metallotweezers are highly dependent on the nature of the rigid connector and of the ancillary ligands that constitute the arms of the tweezer. A peculiar balance between the self-aggregation properties of the tweezer and its ability to encapsulate organic guests is observed.
Collapse
Affiliation(s)
- Susana Ibáñez
- Institute of Advanced Materials (INAM), Centro de Innovación en Química Avanzada (ORFEO−CINQA), Universitat Jaume I, Av. Vicente Sos Baynat s/n, E-12071 Castellón, Spain
| | - Macarena Poyatos
- Institute of Advanced Materials (INAM), Centro de Innovación en Química Avanzada (ORFEO−CINQA), Universitat Jaume I, Av. Vicente Sos Baynat s/n, E-12071 Castellón, Spain
| | - Eduardo Peris
- Institute of Advanced Materials (INAM), Centro de Innovación en Química Avanzada (ORFEO−CINQA), Universitat Jaume I, Av. Vicente Sos Baynat s/n, E-12071 Castellón, Spain
| |
Collapse
|
24
|
John ME, Karnik AV. Chiral benzimidazole derived bis‐phenyl triazoles as chiroptical sensors for iodide and chiral amines. J Heterocycl Chem 2020. [DOI: 10.1002/jhet.3993] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Marina E. John
- Department of ChemistryUniversity of Mumbai Mumbai India
| | - Anil V. Karnik
- Department of ChemistryUniversity of Mumbai Mumbai India
| |
Collapse
|
25
|
Affiliation(s)
- Md. Mehboob Alam
- Department of Chemistry, Indian Institute of Technology Bhilai, Sejbahar, Raipur, India
| | - Kenneth Ruud
- Hylleraas Centre for Quantum Molecular Sciences, Department of Chemistry, UiT – The Arctic University of Norway, Tromsø, Norway
| |
Collapse
|
26
|
Mohan B, Kumar S, Sharma HK. Synthesis and characterizations of flexible furfural based molecular receptor for selective recognition of Dy(III) ions. Polyhedron 2020. [DOI: 10.1016/j.poly.2020.114537] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
|
27
|
Surin M, Ulrich S. From Interaction to Function in DNA-Templated Supramolecular Self-Assemblies. ChemistryOpen 2020; 9:480-498. [PMID: 32328404 PMCID: PMC7175023 DOI: 10.1002/open.202000013] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 03/24/2020] [Indexed: 12/13/2022] Open
Abstract
DNA-templated self-assembly represents a rich and growing subset of supramolecular chemistry where functional self-assemblies are programmed in a versatile manner using nucleic acids as readily-available and readily-tunable templates. In this review, we summarize the different DNA recognition modes and the basic supramolecular interactions at play in this context. We discuss the recent results that report the DNA-templated self-assembly of small molecules into complex yet precise nanoarrays, going from 1D to 3D architectures. Finally, we show their emerging functions as photonic/electronic nanowires, sensors, gene delivery vectors, and supramolecular catalysts, and their growing applications in a wide range of area from materials to biological sciences.
Collapse
Affiliation(s)
- Mathieu Surin
- Laboratory for Chemistry of Novel MaterialsCenter of Innovation and Research in Materials and Polymers (CIRMAP)University of Mons-UMONS7000MonsBelgium
| | | |
Collapse
|
28
|
Passos Gibson V, Fauquignon M, Ibarboure E, Leblond Chain J, Le Meins JF. Switchable Lipid Provides pH-Sensitive Properties to Lipid and Hybrid Polymer/Lipid Membranes. Polymers (Basel) 2020; 12:polym12030637. [PMID: 32168824 PMCID: PMC7183064 DOI: 10.3390/polym12030637] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 03/02/2020] [Accepted: 03/06/2020] [Indexed: 12/21/2022] Open
Abstract
Blending amphiphilic copolymers and lipids constitutes a novel approach to combine the advantages of polymersomes and liposomes into a new single hybrid membrane. Efforts have been made to design stimuli-responsive vesicles, in which the membrane's dynamic is modulated by specific triggers. In this investigation, we proposed the design of pH-responsive hybrid vesicles formulated with poly(dimethylsiloxane)-block-poly(ethylene oxide) backbone (PDMS36-b-PEO23) and cationic switchable lipid (CSL). The latter undergoes a pH-triggered conformational change and induces membrane destabilization. Using confocal imaging and DLS measurements, we interrogated the structural changes in CSL-doped lipid and hybrid polymer/lipid unilamellar vesicles at the micro- and nanometric scale, respectively. Both switchable giant unilamellar lipid vesicles (GUV) and hybrid polymer/lipid unilamellar vesicles (GHUV) presented dynamic morphological changes, including protrusions and fission upon acidification. At the submicron scale, scattered intensity decreased for both switchable large unilamellar vesicles (LUV) and hybrid vesicles (LHUV) under acidic pH. Finally, monitoring the fluorescence leakage of encapsulated calcein, we attested that CSL increased the permeability of GUV and GHUV in a pH-specific fashion. Altogether, these results show that switchable lipids provide a pH-sensitive behavior to hybrid polymer/lipid vesicles that could be exploited for the triggered release of drugs, cell biomimicry studies, or as bioinspired micro/nanoreactors.
Collapse
Affiliation(s)
- Victor Passos Gibson
- Gene Delivery Laboratory, Faculty of pharmacy, University of Montréal, Montréal, QC H3C 3J7, Canada;
| | - Martin Fauquignon
- Laboratoire de Chimie des Polymères Organiques, LCPO, Université de Bordeaux, CNRS, Bordeaux INP, UMR 5629, Avenue Pey Berland, F-33600 Pessac, France; (M.F.); (E.I.)
| | - Emmanuel Ibarboure
- Laboratoire de Chimie des Polymères Organiques, LCPO, Université de Bordeaux, CNRS, Bordeaux INP, UMR 5629, Avenue Pey Berland, F-33600 Pessac, France; (M.F.); (E.I.)
| | - Jeanne Leblond Chain
- Gene Delivery Laboratory, Faculty of pharmacy, University of Montréal, Montréal, QC H3C 3J7, Canada;
- ARNA Laboratory, INSERM U1212, CNRS UMR 5320, University of Bordeaux, Faculty of pharmacy, F-33016 Bordeaux, France
- Correspondence: (J.L.C.); (J.-F.L.M.)
| | - Jean-François Le Meins
- Laboratoire de Chimie des Polymères Organiques, LCPO, Université de Bordeaux, CNRS, Bordeaux INP, UMR 5629, Avenue Pey Berland, F-33600 Pessac, France; (M.F.); (E.I.)
- Correspondence: (J.L.C.); (J.-F.L.M.)
| |
Collapse
|
29
|
Herrera-España AD, Höpfl H, Morales-Rojas H. Boron-Nitrogen Double Tweezers Comprising Arylboronic Esters and Diamines: Self-Assembly in Solution and Adaptability as Hosts for Aromatic Guests in the Solid State. Chempluschem 2020; 85:548-560. [PMID: 32202393 DOI: 10.1002/cplu.201900717] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2019] [Revised: 12/11/2019] [Indexed: 01/07/2023]
Abstract
The thermodynamic stability of 1 : 1 and 2 : 1 boron-nitrogen (B←N) adducts formed between aromatic boronic esters with mono- and diamines was studied in solution by NMR and UV-vis spectroscopy with association energies (ΔG°) ranging from -11 to -28 kJ mol-1 . The effect of different substituents in the boronic ester, the nature of the diamine linker, and the effect of the solvent was explored. Stable 2 : 1 B←N adducts with diamines such as 1,3-diaminopropane were produced in solutions of hydrogen-bonding acceptor solvents (acetonitrile and ethyl acetate), which can be isolated in the solid state as crystalline solvates, whereas the use of noncoordinating solvents such as 1,2-dichloroethane afforded mainly 1 : 1 B←N adducts. In suitable combinations, aromatic bis-pyridyl diamines produced stable 2 : 1 B←N adducts that were isolated either as solvent-free solids, solvates, or cocrystals. In these crystalline forms, double-tweezer hosts were observed with an exceptional syn/anti conformational guest-adaptability driven by simultaneous donor-acceptor and C-H⋅⋅⋅π interactions in the tweezer cavities, resembling preorganized covalent tweezer hosts. Interestingly, cocrystals with electron-rich guests such as tetrathiafulvalene and pyrene showed non-centrosymmetric crystal lattices with infinite π-stacked donor-acceptor columns.
Collapse
Affiliation(s)
- Angel D Herrera-España
- Centro de Investigaciones Químicas Instituto de Investigación en Ciencias Básicas y Aplicadas (IICBA), Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, 62209, Cuernavaca, Morelos, Mexico
| | - Herbert Höpfl
- Centro de Investigaciones Químicas Instituto de Investigación en Ciencias Básicas y Aplicadas (IICBA), Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, 62209, Cuernavaca, Morelos, Mexico
| | - Hugo Morales-Rojas
- Centro de Investigaciones Químicas Instituto de Investigación en Ciencias Básicas y Aplicadas (IICBA), Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, 62209, Cuernavaca, Morelos, Mexico
| |
Collapse
|
30
|
Krykun S, Dekhtiarenko M, Canevet D, Carré V, Aubriet F, Levillain E, Allain M, Voitenko Z, Sallé M, Goeb S. Metalla-Assembled Electron-Rich Tweezers: Redox-Controlled Guest Release Through Supramolecular Dimerization. Angew Chem Int Ed Engl 2020; 59:716-720. [PMID: 31670452 DOI: 10.1002/anie.201912016] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 10/14/2019] [Indexed: 12/19/2022]
Abstract
Developing methodologies for on-demand control of the release of a molecular guest requires the rational design of stimuli-responsive hosts with functional cavities. While a substantial number of responsive metallacages have already been described, the case of coordination-tweezers has been less explored. Herein, we report the first example of a redox-triggered guest release from a metalla-assembled tweezer. This tweezer incorporates two redox-active panels constructed from the electron-rich 9-(1,3-dithiol-2-ylidene)fluorene unit that are facing each other. It dimerizes spontaneously in solution and the resulting interpenetrated supramolecular structure can dissociate in the presence of an electron-poor planar unit, forming a 1:1 host-guest complex. This complex dissociates upon tweezer oxidation/dimerization, offering an original redox-triggered molecular delivery pathway.
Collapse
Affiliation(s)
- Serhii Krykun
- Laboratoire MOLTECH-Anjou, UMR CNRS 6200, UNIV Angers, SFR MATRIX, 2 Bd Lavoisier, 49045, Angers Cedex, France.,Taras Shevchenko National University of Kyiv, 64/13 Volodymyrska st., Kyiv, 01033, Ukraine
| | - Maksym Dekhtiarenko
- Laboratoire MOLTECH-Anjou, UMR CNRS 6200, UNIV Angers, SFR MATRIX, 2 Bd Lavoisier, 49045, Angers Cedex, France.,Taras Shevchenko National University of Kyiv, 64/13 Volodymyrska st., Kyiv, 01033, Ukraine
| | - David Canevet
- Laboratoire MOLTECH-Anjou, UMR CNRS 6200, UNIV Angers, SFR MATRIX, 2 Bd Lavoisier, 49045, Angers Cedex, France
| | - Vincent Carré
- LCP-A2MC, FR 3624, Université de Lorraine, ICPM, 1 Bd Arago, 57078, Metz Cedex 03, France
| | - Frédéric Aubriet
- LCP-A2MC, FR 3624, Université de Lorraine, ICPM, 1 Bd Arago, 57078, Metz Cedex 03, France
| | - Eric Levillain
- Laboratoire MOLTECH-Anjou, UMR CNRS 6200, UNIV Angers, SFR MATRIX, 2 Bd Lavoisier, 49045, Angers Cedex, France
| | - Magali Allain
- Laboratoire MOLTECH-Anjou, UMR CNRS 6200, UNIV Angers, SFR MATRIX, 2 Bd Lavoisier, 49045, Angers Cedex, France
| | - Zoia Voitenko
- Taras Shevchenko National University of Kyiv, 64/13 Volodymyrska st., Kyiv, 01033, Ukraine
| | - Marc Sallé
- Laboratoire MOLTECH-Anjou, UMR CNRS 6200, UNIV Angers, SFR MATRIX, 2 Bd Lavoisier, 49045, Angers Cedex, France
| | - Sébastien Goeb
- Laboratoire MOLTECH-Anjou, UMR CNRS 6200, UNIV Angers, SFR MATRIX, 2 Bd Lavoisier, 49045, Angers Cedex, France
| |
Collapse
|
31
|
Krykun S, Dekhtiarenko M, Canevet D, Carré V, Aubriet F, Levillain E, Allain M, Voitenko Z, Sallé M, Goeb S. Metalla‐Assembled Electron‐Rich Tweezers: Redox‐Controlled Guest Release Through Supramolecular Dimerization. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201912016] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Serhii Krykun
- Laboratoire MOLTECH-Anjou, UMR CNRS 6200UNIV AngersSFR MATRIX 2 Bd Lavoisier 49045 Angers Cedex France
- Taras Shevchenko National University of Kyiv 64/13 Volodymyrska st. Kyiv 01033 Ukraine
| | - Maksym Dekhtiarenko
- Laboratoire MOLTECH-Anjou, UMR CNRS 6200UNIV AngersSFR MATRIX 2 Bd Lavoisier 49045 Angers Cedex France
- Taras Shevchenko National University of Kyiv 64/13 Volodymyrska st. Kyiv 01033 Ukraine
| | - David Canevet
- Laboratoire MOLTECH-Anjou, UMR CNRS 6200UNIV AngersSFR MATRIX 2 Bd Lavoisier 49045 Angers Cedex France
| | - Vincent Carré
- LCP-A2MC, FR 3624Université de Lorraine, ICPM 1 Bd Arago 57078 Metz Cedex 03 France
| | - Frédéric Aubriet
- LCP-A2MC, FR 3624Université de Lorraine, ICPM 1 Bd Arago 57078 Metz Cedex 03 France
| | - Eric Levillain
- Laboratoire MOLTECH-Anjou, UMR CNRS 6200UNIV AngersSFR MATRIX 2 Bd Lavoisier 49045 Angers Cedex France
| | - Magali Allain
- Laboratoire MOLTECH-Anjou, UMR CNRS 6200UNIV AngersSFR MATRIX 2 Bd Lavoisier 49045 Angers Cedex France
| | - Zoia Voitenko
- Taras Shevchenko National University of Kyiv 64/13 Volodymyrska st. Kyiv 01033 Ukraine
| | - Marc Sallé
- Laboratoire MOLTECH-Anjou, UMR CNRS 6200UNIV AngersSFR MATRIX 2 Bd Lavoisier 49045 Angers Cedex France
| | - Sébastien Goeb
- Laboratoire MOLTECH-Anjou, UMR CNRS 6200UNIV AngersSFR MATRIX 2 Bd Lavoisier 49045 Angers Cedex France
| |
Collapse
|
32
|
Dekhtiarenko M, Krykun S, Carré V, Aubriet F, Canevet D, Allain M, Voitenko Z, Sallé M, Goeb S. Tuning the structure and the properties of dithiafulvene metalla-assembled tweezers. Org Chem Front 2020. [DOI: 10.1039/d0qo00641f] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
An electroactive M2L2 metalla-macrocycle constructed through coordination driven self-assembly dimerizes upon oxidation and binds an electro-deficient substrate with a high association constant.
Collapse
Affiliation(s)
- Maksym Dekhtiarenko
- Laboratoire MOLTECH-Anjou
- UMR CNRS 6200
- UNIV Angers
- SFR MATRIX
- 49045 Angers Cedex
| | - Serhii Krykun
- Laboratoire MOLTECH-Anjou
- UMR CNRS 6200
- UNIV Angers
- SFR MATRIX
- 49045 Angers Cedex
| | - Vincent Carré
- LCP-A2MC
- FR 3624
- Université de Lorraine
- ICPM
- 57078 Metz Cedex 03
| | | | - David Canevet
- Laboratoire MOLTECH-Anjou
- UMR CNRS 6200
- UNIV Angers
- SFR MATRIX
- 49045 Angers Cedex
| | - Magali Allain
- Laboratoire MOLTECH-Anjou
- UMR CNRS 6200
- UNIV Angers
- SFR MATRIX
- 49045 Angers Cedex
| | - Zoia Voitenko
- Taras Shevchenko National University of Kyiv
- Kyiv 01033
- Ukraine
| | - Marc Sallé
- Laboratoire MOLTECH-Anjou
- UMR CNRS 6200
- UNIV Angers
- SFR MATRIX
- 49045 Angers Cedex
| | - Sébastien Goeb
- Laboratoire MOLTECH-Anjou
- UMR CNRS 6200
- UNIV Angers
- SFR MATRIX
- 49045 Angers Cedex
| |
Collapse
|
33
|
Cotelle Y, Hardouin-Lerouge M, Lemasson E, Morille Y, Canevet D, Legoupy S, Hudhomme P. An original self-assembly using a tetrathiafulvalene-based molecular clip for the recognition of fullerene C60. Chem Commun (Camb) 2020; 56:3077-3080. [DOI: 10.1039/c9cc09633g] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A glycoluril-based molecular clip incorporating tetrathiafulvalene sidewalls self-assembles with fullerene C60 in a 2 : 1 stoichiometry in solution.
Collapse
Affiliation(s)
- Yoann Cotelle
- Laboratoire MOLTECH-Anjou
- UMR CNRS 6200
- UNIV Angers
- SFR MATRIX
- 49045 Angers Cedex
| | | | - Elise Lemasson
- Laboratoire MOLTECH-Anjou
- UMR CNRS 6200
- UNIV Angers
- SFR MATRIX
- 49045 Angers Cedex
| | - Yohann Morille
- Laboratoire MOLTECH-Anjou
- UMR CNRS 6200
- UNIV Angers
- SFR MATRIX
- 49045 Angers Cedex
| | - David Canevet
- Laboratoire MOLTECH-Anjou
- UMR CNRS 6200
- UNIV Angers
- SFR MATRIX
- 49045 Angers Cedex
| | - Stéphanie Legoupy
- Laboratoire MOLTECH-Anjou
- UMR CNRS 6200
- UNIV Angers
- SFR MATRIX
- 49045 Angers Cedex
| | - Piétrick Hudhomme
- Laboratoire MOLTECH-Anjou
- UMR CNRS 6200
- UNIV Angers
- SFR MATRIX
- 49045 Angers Cedex
| |
Collapse
|
34
|
Yospanya W, Nishijima M, Araki Y, Buffeteau T, Pouget E, Wada T, Oda R. Near perfect head-to-head selectivity on the supramolecular photocyclodimerisation of 2-anthracenecarboxylate with self-organised gemini surfactant bilayers. Chem Commun (Camb) 2020; 56:10058-10061. [DOI: 10.1039/d0cc04198j] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Near perfect head-to-head selectivity upon supramolecular [4+4] photocyclodimerisation of 2-anthracenecarboxylate were achieved through silicificated self-organised gemini surfactant bilayers in water at room temperature.
Collapse
Affiliation(s)
- Wijak Yospanya
- Institute of Chemistry & Biology of Membranes & Nanoobjects (UMR5248 CBMN)
- CNRS – Université de Bordeaux – Bordeaux INP
- 33607 Pessac
- France
- Institute of Multidisciplinary Research for Advanced Materials
| | - Masaki Nishijima
- Institute of Multidisciplinary Research for Advanced Materials
- Tohoku University
- Sendai 980-8577
- Japan
| | - Yasuyuki Araki
- Institute of Multidisciplinary Research for Advanced Materials
- Tohoku University
- Sendai 980-8577
- Japan
| | - Thierry Buffeteau
- Institut des Sciences Moléculaires (UMR5255 ISM)
- CNRS – Université de Bordeaux
- 33405 Talence
- France
| | - Emilie Pouget
- Institute of Chemistry & Biology of Membranes & Nanoobjects (UMR5248 CBMN)
- CNRS – Université de Bordeaux – Bordeaux INP
- 33607 Pessac
- France
| | - Takehiko Wada
- Institute of Multidisciplinary Research for Advanced Materials
- Tohoku University
- Sendai 980-8577
- Japan
| | - Reiko Oda
- Institute of Chemistry & Biology of Membranes & Nanoobjects (UMR5248 CBMN)
- CNRS – Université de Bordeaux – Bordeaux INP
- 33607 Pessac
- France
| |
Collapse
|
35
|
Doistau B, Benda L, Cantin JL, Cador O, Pointillart F, Wernsdorfer W, Chamoreau LM, Marvaud V, Hasenknopf B, Vives G. Dual switchable molecular tweezers incorporating anisotropic Mn III-salphen complexes. Dalton Trans 2020; 49:8872-8882. [PMID: 32530022 DOI: 10.1039/d0dt01465f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
An alternative strategy for the synthesis of terpyridine based switchable molecular tweezers has been developed to incorporate anisotropic Mn(iii)-salphen complexes. The free ligand was synthesized using a building block strategy based on Sonogashira coupling reactions and was then selectively metalated with manganese in a last step. The conformation of the tweezers was switched from an open 'W' shaped form to a closed 'U' form by Zn(ii) coordination to the terpyridine unit bringing the two Mn-salphen moieties in close spatial proximity as confirmed by X-ray crystallography. An alternate switching mechanism was observed by the intercalation of a bridging cyanide ligand between the two Mn-salphen moieties that resulted in the closing of the tweezers. These dual stimuli are attractive for achieving multiple controls of the mechanical motion of the tweezers. A crystallographic structure of unexpected partially oxidized closed tweezers was also obtained. One of the two Mn-salphen moieties underwent a ligand-centered oxidation of an imino to an amido group allowing an intramolecular Mn-Oamide-Mn linkage. The magnetic properties of the manganese(iii) dimers were investigated to evaluate the magnetic exchange interaction and analyze the single molecule magnet behavior.
Collapse
Affiliation(s)
- Benjamin Doistau
- Sorbonne Université, UMR CNRS 8232, Institut Parisien de Chimie Moléculaire, 4 place Jussieu, 75005, Paris, France.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
36
|
Benda L, Doistau B, Rossi-Gendron C, Chamoreau LM, Hasenknopf B, Vives G. Substrate-dependent allosteric regulation by switchable catalytic molecular tweezers. Commun Chem 2019. [DOI: 10.1038/s42004-019-0246-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
AbstractAllosteric regulation is exploited by biological systems to regulate the activity and/or selectivity of enzymatic reactions but remains a challenge for artificial catalysts. Here we report switchable terpy(Zn-salphen)2 molecular tweezers and their metal-dependent allosteric regulation of the acetylation of pyridinemethanol isomers. Zinc-salphen moieties can both act as a Lewis acid to activate the anhydride reagents and provide a binding site for pyridinemethanol substrates. The tweezers’ conformation can be reversibly switched between an open and a closed form by a metal ion stimulus. Both states offer distinct catalytic profiles, with closed tweezers showing superior catalytic activity towards ortho substrates, while open tweezers presenting higher rate for the acetylation of meta and para substrates. This notable substrate dependent allosteric response is rationalized by a combination of experimental results and calculations supporting a bimetallic reaction in the closed form for ortho substrate and an inhibition of the cavity for meta and para substrates.
Collapse
|
37
|
Study of the self-association of molecular tweezers bearing two different arms: influence of the stereoelectronic effects of the arm substituents. J INCL PHENOM MACRO 2019. [DOI: 10.1007/s10847-019-00954-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
38
|
Surface-Modified Chitosan: An Adsorption Study of a “Tweezer-Like” Biopolymer with Fluorescein. SURFACES 2019. [DOI: 10.3390/surfaces2030035] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Tweezer-like adsorbents with enhanced surface area were synthesized by grafting aniline onto the amine sites of a chitosan biopolymer scaffold. The chemical structure and textural properties of the adsorbents were characterized by thermogravimetric analysis (TGA) and spectral methods, including Fourier transform infrared (FT-IR), nuclear magnetic resonance (1H- and, 13C-NMR) and scanning electron microscopy (SEM). Equilibrium solvent swelling results for the adsorbent materials provided evidence of a more apolar biopolymer surface upon grafting. Equilibrium uptake studies with fluorescein at ambient pH in aqueous media reveal a high monolayer adsorption capacity (Qm) of 61.8 mg·g−1, according to the Langmuir isotherm model. The kinetic adsorption profiles are described by the pseudo-first order kinetic model. 1D NMR and 2D-NOESY NMR spectra were used to confirm the role of π-π interactions between the adsorbent and adsorbate. Surface modification of the adsorbent using monomeric and dimeric cationic surfactants with long hydrocarbon chains altered the hydrophile-lipophile balance (HLB) of the adsorbent surface, which resulted in attenuated uptake of fluorescein by the chitosan molecular tweezers. This research contributes to a first example of the uptake properties for a tweezer-like chitosan adsorbent and the key role of weak cooperative interactions in controlled adsorption of a model anionic dye.
Collapse
|
39
|
Kumar R, Aggarwal H, Bhowal R, Chopra D, Srivastava A. An Electron‐Rich Helical Host for the Exclusive Removal of a Planar Electron‐Deficient Organic Compound. Chemistry 2019; 25:10756-10762. [DOI: 10.1002/chem.201902418] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Revised: 06/04/2019] [Indexed: 01/23/2023]
Affiliation(s)
- Rajesh Kumar
- Department of ChemistryIndian Institute of Science Education and Research Bhopal, Madhya Pradesh 462066 India
| | - Himanshu Aggarwal
- Department of ChemistryIndian Institute of Science Education and Research Bhopal, Madhya Pradesh 462066 India
| | - Rohit Bhowal
- Department of ChemistryIndian Institute of Science Education and Research Bhopal, Madhya Pradesh 462066 India
| | - Deepak Chopra
- Department of ChemistryIndian Institute of Science Education and Research Bhopal, Madhya Pradesh 462066 India
| | - Aasheesh Srivastava
- Department of ChemistryIndian Institute of Science Education and Research Bhopal, Madhya Pradesh 462066 India
| |
Collapse
|
40
|
Mbarek A, Moussa G, Chain JL. Pharmaceutical Applications of Molecular Tweezers, Clefts and Clips. Molecules 2019; 24:molecules24091803. [PMID: 31075983 PMCID: PMC6539068 DOI: 10.3390/molecules24091803] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Revised: 05/03/2019] [Accepted: 05/07/2019] [Indexed: 12/25/2022] Open
Abstract
Synthetic acyclic receptors, composed of two arms connected with a spacer enabling molecular recognition, have been intensively explored in host-guest chemistry in the past decades. They fall into the categories of molecular tweezers, clefts and clips, depending on the geometry allowing the recognition of various guests. The advances in synthesis and mechanistic studies have pushed them forward to pharmaceutical applications, such as neurodegenerative disorders, infectious diseases, cancer, cardiovascular disease, diabetes, etc. In this review, we provide a summary of the synthetic molecular tweezers, clefts and clips that have been reported for pharmaceutical applications. Their structures, mechanism of action as well as in vitro and in vivo results are described. Such receptors were found to selectively bind biological guests, namely, nucleic acids, sugars, amino acids and proteins enabling their use as biosensors or therapeutics. Particularly interesting are dynamic molecular tweezers which are capable of controlled motion in response to an external stimulus. They proved their utility as imaging agents or in the design of controlled release systems. Despite some issues, such as stability, cytotoxicity or biocompatibility that still need to be addressed, it is obvious that molecular tweezers, clefts and clips are promising candidates for several incurable diseases as therapeutic agents, diagnostic or delivery tools.
Collapse
Affiliation(s)
- Amira Mbarek
- Gene Delivery Laboratory, Faculty of pharmacy, Université de Montréal, H3C 3J7, Montréal, Québec, Canada.
| | - Ghina Moussa
- Gene Delivery Laboratory, Faculty of pharmacy, Université de Montréal, H3C 3J7, Montréal, Québec, Canada.
| | - Jeanne Leblond Chain
- Gene Delivery Laboratory, Faculty of pharmacy, Université de Montréal, H3C 3J7, Montréal, Québec, Canada.
- Univ. Bordeaux, ARNA Laboratory, F-33016 Bordeaux, France.
- INSERM U1212, CNRS UMR 5320, ARNA Laboratory, F-33016 Bordeaux, France.
| |
Collapse
|
41
|
Hisamatsu Y, Umezawa N, Yagi H, Kato K, Higuchi T. Design and synthesis of a 4-aminoquinoline-based molecular tweezer that recognizes protoporphyrin IX and iron(iii) protoporphyrin IX and its application as a supramolecular photosensitizer. Chem Sci 2018; 9:7455-7467. [PMID: 30319746 PMCID: PMC6180317 DOI: 10.1039/c8sc02133c] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Accepted: 08/14/2018] [Indexed: 01/08/2023] Open
Abstract
We report on the design and synthesis of a new type of 4-aminoquinoline-based molecular tweezer 1 which forms a stable host-guest complex with protoporphyrin IX (PPIX) via multiple interactions in a DMSO and HEPES buffer (pH 7.4) mixed solvent system. The binding constant for the 1 : 1 complex (K 11) between 1 and PPIX is determined to be 4 × 106 M-1. Furthermore, 1 also forms a more stable complex with iron(iii) protoporphyrin IX (Fe(iii)PPIX), the K 11 value for which is one order of magnitude greater than that for PPIX, indicating that 1 could be used as a recognition unit of a synthetic heme sensor. On the other hand, the formation of the stable PPIX·1 complex (supramolecular photosensitizer) prompted us to apply it to photodynamic therapy (PDT). Cell staining experiments using the supramolecular photosensitizer and evaluations of its photocytotoxicity indicate that the PDT activity of PPIX is improved as the result of the formation of a complex with 1.
Collapse
Affiliation(s)
- Yosuke Hisamatsu
- Graduate School of Pharmaceutical Sciences , Nagoya City University , 3-1 Tanabe-dori, Mizuho-ku , Nagoya 467-8603 , Japan . ;
| | - Naoki Umezawa
- Graduate School of Pharmaceutical Sciences , Nagoya City University , 3-1 Tanabe-dori, Mizuho-ku , Nagoya 467-8603 , Japan . ;
| | - Hirokazu Yagi
- Graduate School of Pharmaceutical Sciences , Nagoya City University , 3-1 Tanabe-dori, Mizuho-ku , Nagoya 467-8603 , Japan . ;
| | - Koichi Kato
- Graduate School of Pharmaceutical Sciences , Nagoya City University , 3-1 Tanabe-dori, Mizuho-ku , Nagoya 467-8603 , Japan . ;
- Exploratory Research Center on Life and Living Systems (ExCELLS) and Institute for Molecular Science (IMS) , National Institutes of Natural Sciences , 5-1 Higashiyama, Myodaiji , Okazaki 444-8787 , Japan
| | - Tsunehiko Higuchi
- Graduate School of Pharmaceutical Sciences , Nagoya City University , 3-1 Tanabe-dori, Mizuho-ku , Nagoya 467-8603 , Japan . ;
| |
Collapse
|
42
|
Jacquot de Rouville HP, Zorn N, Leize-Wagner E, Heitz V. Entwined dimer formation from self-complementary bis-acridiniums. Chem Commun (Camb) 2018; 54:10966-10969. [PMID: 30204168 DOI: 10.1039/c8cc05958f] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
A dicationic tweezer incorporating two acridinium moieties linked by a 2,6-diphenylpyridine spacer was shown to self-assemble in an entwined dimer both in acetonitrile and water. The reaction was studied according to solvent polarity, temperature and concentration conditions. The entwined structure was confirmed in the solid state via single-crystal X-ray diffraction.
Collapse
|
43
|
Kikot LS, Kulygina CY, Lyapunov AY, Shishkina SV, Zubatyuk RI, Bogashchenko TY, Kirichenko TI. Synthesis and complexation of molecular clips based on diphenylglycoluril and dibenzocrown ethers with alkali metal cations and paraquat. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.08.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
44
|
Mohan B, Modi K, Patel C, Bhatia P, Kumar A, Sharma HK. Design and synthesis of two armed molecular receptor for recognition of Gd3+metal ion and its computational study. Appl Organomet Chem 2018. [DOI: 10.1002/aoc.4502] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Brij Mohan
- Department of Chemistry; Kurukshetra University; Kurukshetra 136119 India
| | - Krunal Modi
- J. Heyrovsky Institute of physical Chemistry; Academy of Sciences of the Czech Republic; Dolejškova 2155/3 182 23 Prague 8 Czech Republic
| | - Chirag Patel
- Department of Botany, Bioinformatics and Climate Change Impacts Management, University School of Sciences; Gujarat University; Ahmedabad Gujarat 380009 India
| | - Pankaj Bhatia
- Department of Chemistry; Kurukshetra University; Kurukshetra 136119 India
| | - Ashwani Kumar
- Department of Chemistry; Kurukshetra University; Kurukshetra 136119 India
| | | |
Collapse
|
45
|
Han Y, Tian Y, Li Z, Wang F. Donor-acceptor-type supramolecular polymers on the basis of preorganized molecular tweezers/guest complexation. Chem Soc Rev 2018; 47:5165-5176. [PMID: 29774915 DOI: 10.1039/c7cs00802c] [Citation(s) in RCA: 85] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The bottom-up self-assembly of donor-acceptor (D-A) units has received tremendous attention in recent years. Charge-transfer interactions, which are inherently embedded in D-A pairs, have suffered from some disadvantages such as erratic arrangements and weak binding affinity, thus hampering the precise arrangement of D-A units into long-range-ordered supramolecular polymers. To address this issue, a feasible protocol is to incorporate D-A units into molecular tweezers/guest recognition motifs, which concurrently feature high complexation directionality, strong binding affinity and stimuli-responsiveness. In this tutorial review, we have summarized the recent advances on the tweezering directed formation of D-A-type supramolecular polymers, with particular emphasis on the design principles of monomers and macroscopic behaviors of supramolecular polymers, together with future challenges in this research field.
Collapse
Affiliation(s)
- Yifei Han
- 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, China.
| | | | | | | |
Collapse
|
46
|
Benda L, Doistau B, Hasenknopf B, Vives G. Synthesis and Guest Recognition of Switchable Pt-Salphen Based Molecular Tweezers. Molecules 2018; 23:molecules23050990. [PMID: 29695059 PMCID: PMC6102593 DOI: 10.3390/molecules23050990] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Revised: 04/18/2018] [Accepted: 04/20/2018] [Indexed: 01/16/2023] Open
Abstract
Molecular tweezers are artificial receptors that have an open cavity generated by two recognition units pre-organized by a spacer. Switchable molecular tweezers, using a stimuli-responsive spacer, are particularly appealing as prototypes of the molecular machines that combine mechanical motion and allosteric recognition properties. In this present study, the synthesis of switchable molecular tweezers composed of a central terpyridine unit substituted in 4,4″ positions by two Pt(II)-salphen complexes is reported. The terpyridine ligand can be reversibly converted upon Zn(II) coordination from a free ‘U’-shaped closed form to a coordinated ‘W’ open form. This new substitution pattern enables a reverse control of the mechanical motion compared to the previously reported 6,6″ substituted terpyridine-based tweezers. Guest binding studies with aromatic guests showed an intercalation of coronene in the cavity created by the Pt-salphen moieties in the closed conformation. The formation of 1:1 host-guest complex was investigated by a combination of NMR studies and DFT calculations.
Collapse
Affiliation(s)
- Lorien Benda
- Institut Parisien de Chimie Moléculaire, Sorbonne Université, CNRS UMR 8232, 4 Place Jussieu, 75005 Paris, France.
| | - Benjamin Doistau
- Institut Parisien de Chimie Moléculaire, Sorbonne Université, CNRS UMR 8232, 4 Place Jussieu, 75005 Paris, France.
| | - Bernold Hasenknopf
- Institut Parisien de Chimie Moléculaire, Sorbonne Université, CNRS UMR 8232, 4 Place Jussieu, 75005 Paris, France.
| | - Guillaume Vives
- Institut Parisien de Chimie Moléculaire, Sorbonne Université, CNRS UMR 8232, 4 Place Jussieu, 75005 Paris, France.
| |
Collapse
|
47
|
Takeda M, Hiroto S, Yokoi H, Lee S, Kim D, Shinokubo H. Azabuckybowl-Based Molecular Tweezers as C60 and C70 Receptors. J Am Chem Soc 2018; 140:6336-6342. [DOI: 10.1021/jacs.8b02327] [Citation(s) in RCA: 81] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Motoki Takeda
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8603, Japan
| | - Satoru Hiroto
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8603, Japan
| | - Hiroki Yokoi
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8603, Japan
| | - Sangsu Lee
- Department of Chemistry, Yonsei University, 50 Yonsei-ro, Seodaemoon-gu, Seoul 03722, Korea
| | - Dongho Kim
- Department of Chemistry, Yonsei University, 50 Yonsei-ro, Seodaemoon-gu, Seoul 03722, Korea
| | - Hiroshi Shinokubo
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8603, Japan
| |
Collapse
|
48
|
Chizhik S, Sidelnikov A, Zakharov B, Naumov P, Boldyreva E. Quantification of photoinduced bending of dynamic molecular crystals: from macroscopic strain to kinetic constants and activation energies. Chem Sci 2018; 9:2319-2335. [PMID: 29719705 PMCID: PMC5903420 DOI: 10.1039/c7sc04863g] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2017] [Accepted: 01/19/2018] [Indexed: 01/10/2023] Open
Abstract
Photomechanically reconfigurable elastic single crystals are the key elements for contactless, timely controllable and spatially resolved transduction of light into work from the nanoscale to the macroscale. The deformation in such single-crystal actuators is observed and usually attributed to anisotropy in their structure induced by the external stimulus. Yet, the actual intrinsic and external factors that affect the mechanical response remain poorly understood, and the lack of rigorous models stands as the main impediment towards benchmarking of these materials against each other and with much better developed soft actuators based on polymers, liquid crystals and elastomers. Here, experimental approaches for precise measurement of macroscopic strain in a single crystal bent by means of a solid-state transformation induced by light are developed and used to extract the related temperature-dependent kinetic parameters. The experimental results are compared against an overarching mathematical model based on the combined consideration of light transport, chemical transformation and elastic deformation that does not require fitting of any empirical information. It is demonstrated that for a thermally reversible photoreactive bending crystal, the kinetic constants of the forward (photochemical) reaction and the reverse (thermal) reaction, as well as their temperature dependence, can be extracted with high accuracy. The improved kinematic model of crystal bending takes into account the feedback effect, which is often neglected but becomes increasingly important at the late stages of the photochemical reaction in a single crystal. The results provide the most rigorous and exact mathematical description of photoinduced bending of a single crystal to date.
Collapse
Affiliation(s)
- Stanislav Chizhik
- Institute of Solid State Chemistry and Mechanochemistry , Siberian Branch of Russian Academy of Sciences , ul. Kutateladze, 18 , Novosibirsk 620128 , Russian Federation .
- Novosibirsk State University , ul. Pirogova, 2 , Novosibirsk 630090 , Russian Federation
| | - Anatoly Sidelnikov
- Institute of Solid State Chemistry and Mechanochemistry , Siberian Branch of Russian Academy of Sciences , ul. Kutateladze, 18 , Novosibirsk 620128 , Russian Federation .
- Novosibirsk State University , ul. Pirogova, 2 , Novosibirsk 630090 , Russian Federation
| | - Boris Zakharov
- Institute of Solid State Chemistry and Mechanochemistry , Siberian Branch of Russian Academy of Sciences , ul. Kutateladze, 18 , Novosibirsk 620128 , Russian Federation .
- Novosibirsk State University , ul. Pirogova, 2 , Novosibirsk 630090 , Russian Federation
| | - Panče Naumov
- New York University Abu Dhabi , P.O. Box 129188 , Abu Dhabi , United Arab Emirates
| | - Elena Boldyreva
- Institute of Solid State Chemistry and Mechanochemistry , Siberian Branch of Russian Academy of Sciences , ul. Kutateladze, 18 , Novosibirsk 620128 , Russian Federation .
- Novosibirsk State University , ul. Pirogova, 2 , Novosibirsk 630090 , Russian Federation
| |
Collapse
|
49
|
Investigation of specific interactions between T7 promoter and T7 RNA polymerase by force spectroscopy using atomic force microscope. Biochem J 2018; 475:319-328. [DOI: 10.1042/bcj20170616] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Revised: 11/23/2017] [Accepted: 11/29/2017] [Indexed: 12/30/2022]
Abstract
The specific recognition and binding of promoter and RNA polymerase is the first step of transcription initiation in bacteria and largely determines transcription activity. Therefore, direct analysis of the interaction between promoter and RNA polymerase in vitro may be a new strategy for promoter characterization, to avoid interference due to the cell's biophysical condition and other regulatory elements. In the present study, the specific interaction between T7 promoter and T7 RNA polymerase was studied as a model system using force spectroscopy based on atomic force microscope (AFM). The specific interaction between T7 promoter and T7 RNA polymerase was verified by control experiments, and the rupture force in this system was measured as 307.2 ± 6.7 pN. The binding between T7 promoter mutants with various promoter activities and T7 RNA polymerase was analyzed. Interaction information including rupture force, rupture distance and binding percentage were obtained in vitro, and reporter gene expression regulated by these promoters was also measured according to a traditional promoter activity characterization method in vivo. Using correlation analysis, it was found that the promoter strength characterized by reporter gene expression was closely correlated with rupture force and the binding percentage by force spectroscopy. These results indicated that the analysis of the interaction between promoter and RNA polymerase using AFM-based force spectroscopy was an effective and valid approach for the quantitative characterization of promoters.
Collapse
|
50
|
Xing X, Zhao Y. Intramolecularly enhanced molecular tweezers with unusually strong binding for aromatic guests in unfavorable solvents. Org Biomol Chem 2018; 16:3885-3888. [DOI: 10.1039/c8ob00786a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Molecular tweezers using aromatic interactions for binding normally work best in polar instead of nonpolar solvents due to the strong solvophobic effect in the binding.
Collapse
Affiliation(s)
- Xiaoyu Xing
- Department of Chemistry
- Iowa State University
- Ames
- USA
| | - Yan Zhao
- Department of Chemistry
- Iowa State University
- Ames
- USA
| |
Collapse
|