1
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Assaf KI, Faraj AN, Abu-Nameh ESM, Alnajjar MA. Supramolecular complexation of phenylephrine by cucurbit[7]uril in aqueous solution. RSC Adv 2024; 14:13286-13290. [PMID: 38655473 PMCID: PMC11037392 DOI: 10.1039/d4ra01910e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Accepted: 04/17/2024] [Indexed: 04/26/2024] Open
Abstract
Cucurbiturils (CBn) are known to establish stable host-guest complexes with a variety of drug molecules. Herein, the supramolecular complexation between cucurbit[7]uril (CB7) and phenylephrine hydrochloride is reported in aqueous solution. Phenylephrine forms inclusion complex with CB7 with high binding affinity (Kaffinity = 4.0 × 106 M-1), which allows for the development of a fluorescence-based sensing assay applying the dye displacement strategy. The structure of the host-guest inclusion complex is investigated by 1H NMR spectroscopy, in which complexation-induced chemical shifts indicate the immersion of the aromatic ring inside the hydrophobic cavity of CB7. Density functional theory (DFT) calculations support the 1H NMR results, and reveal that the complex is stabilized through intermolecular interactions between the polar groups on the phenylephrine and the carbonyl rims of CB7, as well as the hydrophobic effect. Moreover, preferential binding of phenylephrine in its protonated over the neutral form results in a complexation-induced pKa shift.
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Affiliation(s)
- Khaleel I Assaf
- Department of Chemistry, Al-Balqa Applied University Al-Salt 19117 Jordan
| | - Ayah N Faraj
- Department of Chemistry, Al-Balqa Applied University Al-Salt 19117 Jordan
| | - Eyad S M Abu-Nameh
- Department of Chemistry, Al-Balqa Applied University Al-Salt 19117 Jordan
| | - Mohammad A Alnajjar
- Department of Biology and Chemistry, Center for Cellular Nanoanalytics, Universität Osnabrück 49069 Osnabrück Germany
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2
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Zhou CW, Wang XZ, Xie M, Xia RQ, Luo D, Lian ZX, Ning GH, Lu W, Zhou XP, Li D. A Self-Assembled Capsule for Propylene/Propane Separation. Angew Chem Int Ed Engl 2023; 62:e202315020. [PMID: 37884445 DOI: 10.1002/anie.202315020] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 10/26/2023] [Accepted: 10/26/2023] [Indexed: 10/28/2023]
Abstract
The development of energy-saving technology for the efficient separation of olefin and paraffin is highly important for the chemical industry. Herein, we report a self-assembled Fe4 L6 capsule containing a hydrophobic cavity, which can be used to encapsulate and separate propylene/propane. The successful encapsulation of propylene and propane by the Fe4 L6 cage in a water solution was documented by NMR spectroscopy. The binding constants K for the Fe4 L6 cage toward propylene and propane were determined to be (5.0±0.1)×103 M-1 and (2.1±0.7)×104 M-1 in D2 O at 25 °C, respectively. Experiments and theoretical studies revealed that the cage exhibited multiple weak interactions with propylene and propane. The polymer-grade propylene (>99.5 %) can be obtained from a mixture of propylene and propane by using the Fe4 L6 cage as a separation material in a U-shaped glass tube. This work provides a new strategy for the separation of olefin/paraffin.
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Affiliation(s)
- Chuang-Wei Zhou
- College of Chemistry and Materials Science, Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University, Guangzhou, Guangdong 510632, P. R. China
| | - Xue-Zhi Wang
- College of Chemistry and Materials Science, Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University, Guangzhou, Guangdong 510632, P. R. China
| | - Mo Xie
- College of Chemistry and Materials Science, Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University, Guangzhou, Guangdong 510632, P. R. China
| | - Ri-Qin Xia
- College of Chemistry and Materials Science, Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University, Guangzhou, Guangdong 510632, P. R. China
| | - Dong Luo
- College of Chemistry and Materials Science, Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University, Guangzhou, Guangdong 510632, P. R. China
| | - Zhao-Xia Lian
- College of Chemistry and Materials Science, Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University, Guangzhou, Guangdong 510632, P. R. China
| | - Guo-Hong Ning
- College of Chemistry and Materials Science, Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University, Guangzhou, Guangdong 510632, P. R. China
| | - Weigang Lu
- College of Chemistry and Materials Science, Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University, Guangzhou, Guangdong 510632, P. R. China
| | - Xiao-Ping Zhou
- College of Chemistry and Materials Science, Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University, Guangzhou, Guangdong 510632, P. R. China
| | - Dan Li
- College of Chemistry and Materials Science, Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University, Guangzhou, Guangdong 510632, P. R. China
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3
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Assaf KI, Nau WM. Dispersion Interactions in Condensed Phases and inside Molecular Containers. Acc Chem Res 2023; 56:3451-3461. [PMID: 37956240 DOI: 10.1021/acs.accounts.3c00523] [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
ConspectusThe past decade has seen significant progress in the understanding and appreciation of the importance of London dispersion interactions (LDIs) in supramolecular systems and solutions. The Slater-Kirkwood formula relates LDIs to the molecular polarizabilities of the two interacting molecular species (α) and their interaction distance (a dependence of R-6). When advancing arguments related to intermolecular interactions, it is frequently assumed that molecules with larger molecular polarizabilities are more amenable to larger LDIs. However, arguments related to molecular polarizabilities are not always transferable to the condensed phase. In fact, the underlying bulk and molecular polarizabilities of common solvents show opposing trends. The intuitive concept that aromatic molecules are more polarizable than saturated hydrocarbons and that perfluorinated molecules are less polarizable than saturated hydrocarbons applies to the condensed phase only. When treating association phenomena in solution, where LDIs are generally very attenuated, the use of bulk polarizabilities is recommended, which are experimentally accessible through either refractive index measurements or suitable solvatochromic probes. Such probes can also be used to assess polarizabilities inside molecular container compounds, such as cucurbit[n]urils (CBn), cyclodextrins, calixarenes, and hemicarcerands. These macrocyclic cavities can have extreme microenvironments. For example, the inner concave phase of CB7 has been shown to be weakly polarizable, falling in between the gas phase and perfluorohexane; those of β-cyclodextrin and p-sulfonatocalix[4]arene have been found to be similarly polarizable as water and alkanes, respectively, and the inside of hemicarcerands displays a very large bulk polarizability, exceeding that of diiodomethane. CBn compounds are privileged molecular container compounds, which we exemplify in this Account through case studies. (1) CBn macrocycles are prime water-soluble receptors for hydrocarbons, allowing for the reduction of the binding free energies to two components: the hydrophobic effect and dispersion interactions. To understand hydrocarbon binding, we initiated the HYDROPHOBE challenge, which revealed the shortcomings of both quantum-chemical and molecular dynamics approaches. (2) The smallest CBn receptor, CB5, is uniquely suited to bind the entire noble gas series, where hydrophobic effects and dispersion interactions operate in opposite directions. CB5 was revaled to be a unique synthetic receptor for noble gases, with the dominant driving force being the recovery of the cavitation energies for the hydration of noble gases in aqueous solution. Computational methods that encounter challenges in predicting hydrocarbon affinities and trends for CB6 and CB7 perform well for noble gases binding to CB5. (3) The larger homologue, CB8, allows one to set up intermolecular interaction chambers by the encapsulation of a (first) aromatic guest, thereby tuning LDIs inside the receptor cavity. In this manner, CB8 can be modulated to preferentially bind unsaturated and aromatic rather than saturated hydrocarbons, while the unmodified cavities of the smaller macrocycles CB6 and CB7 show selective binding of saturated hydrocarbons. (4) The (charged) host-guest complexes of CBn hosts are sufficiently stable in the gas phase, allowing for the study of the influence of LDIs on inner-phase chemical reactions. These studies are particularly interesting for the theoretical analysis of isolated host-guest LDIs, as experimental and computational data are directly comparable in the gas phase due to the absence of the solvation effect.
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Affiliation(s)
- Khaleel I Assaf
- Al-Balqa Applied University, Faculty of Science, Department of Chemistry, 19117 Al-Salt, Jordan
| | - Werner M Nau
- Constructor University, School of Science, Campus Ring 1, 28759 Bremen, Germany
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4
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He S, Huang B, Xiao B, Chang S, Podalko M, Nau WM. Stabilization of Guest Molecules inside Cation-Lidded Cucurbiturils Reveals that Hydration of Receptor Sites Can Impede Binding. Angew Chem Int Ed Engl 2023; 62:e202313864. [PMID: 37812692 DOI: 10.1002/anie.202313864] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2023] [Revised: 10/06/2023] [Accepted: 10/09/2023] [Indexed: 10/11/2023]
Abstract
Docking of alkali metal ions to water-soluble macrocyclic receptors generally reduces the affinity of guest molecules due to competitive binding. The idea that solvation water molecules could display a larger steric hindrance towards guest binding than cations has not been considered to date. We show that the docking of large cations to cucurbit[5]uril (CB5) unexpectedly increases (by a factor of 5-8) the binding of hydrophobic guests, methane and ethane. This is due to the removal of water molecules from the carbonyl portals of CB5 during cation binding, which frees up space for hydrophobe encapsulation. In contrast, smaller cations like sodium protrude deeply into the cavity of CB5 and cause the expected decrease in binding, such that the rational selection of alkali cations allows for a variation of up to a factor of 20 in binding of methane and ethane. The statistical analysis of crystallographic data shows that the cavity volume of CB5 can be enlarged by placing large alkali ions (Rb+ and Cs+ ) centro-symmetrically at the portals. The results reveal a hitherto elusive steric hindrance of solvation water molecules near receptor binding sites, which is pertinent for the design of supramolecular catalysts and the understanding of biological receptors.
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Affiliation(s)
- Suhang He
- School of Science, Constructor University, Campus Ring 1, 28759, Bremen, Germany
- Center of Single-Molecule Sciences, College of Electronic Information and Optical Engineering, Nankai University, 38 Tongyan Road, Jinnan District, 300350, Tianjin, China
| | - Bing Huang
- Faculty of Physics, University of Vienna, Kolingasse 14-16, 10905, Vienna, Austria
| | - Bohuai Xiao
- The State Key Laboratory of Refractories and Metallurgy, Faculty of Materials, Wuhan University of Science and Technology, 430081, Wuhan, Hubei, China
| | - Shuai Chang
- The State Key Laboratory of Refractories and Metallurgy, Faculty of Materials, Wuhan University of Science and Technology, 430081, Wuhan, Hubei, China
| | - Marina Podalko
- School of Science, Constructor University, Campus Ring 1, 28759, Bremen, Germany
| | - Werner M Nau
- School of Science, Constructor University, Campus Ring 1, 28759, Bremen, Germany
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5
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Lončarić D, Movahedifar F, Štoček JR, Dračínský M, Cvačka J, Guan S, Bythell BJ, Císařová I, Masson E, Kaleta J. Solvent-controlled formation of alkali and alkali-earth-secured cucurbituril/guest trimers. Chem Sci 2023; 14:9258-9266. [PMID: 37712024 PMCID: PMC10498720 DOI: 10.1039/d3sc02032k] [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: 04/19/2023] [Accepted: 08/08/2023] [Indexed: 09/16/2023] Open
Abstract
Cucurbit[7]uril (CB[7]) encapsulates adamantyl and trimethylsilyl substituents of positively charged guests in dimethyl sulfoxide (DMSO). Unlike in water or deuterium oxide, addition of a selection of alkali and alkali-earth cations with van der Waals radii between 1.0 and 1.4 Å (Na+, K+, Ca2+, Sr2+, Ba2+ and Eu3+) to the CB[7]/guest complexes triggers their cation-mediated trimerization, a process that is very slow on the nuclear magnetic resonance (NMR) time scale. Smaller (Li+, Mg2+) or larger cations (Rb+, Cs+ or NH4+) are inert. The trimers display extensive CH-O interactions between the equatorial and pseudo-equatorial hydrogens of CB[7] and the carbonyl rim of the neighboring CB[7] unit in the trimer, and a deeply nested cation between the three interacting carbonylated CB[7] rims; a counteranion is likely perched in the shallow cavity formed by the three outer walls of CB[7] in the trimer. Remarkably, a guest must occupy the cavity of CB[7] for trimerization to take place. Using a combination of semi-empirical and density functional theory techniques in conjunction with continuum solvation models, we showed that trimerization is favored in DMSO, and not in water, because the penalty for the partial desolvation of three of the six CB[7] portals upon aggregation into a trimer is less unfavorable in DMSO compared to water.
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Affiliation(s)
- Doroteja Lončarić
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences Flemingovo nám. 2 160 00 Prague 6 Czech Republic
- Department of Organic Chemistry, Faculty of Science, Charles University in Prague 128 40 Prague 2 Czech Republic
| | - Fahimeh Movahedifar
- Department of Chemistry and Biochemistry, Ohio University Athens Ohio 45701 USA
| | - Jakub Radek Štoček
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences Flemingovo nám. 2 160 00 Prague 6 Czech Republic
- Department of Organic Chemistry, Faculty of Science, Charles University in Prague 128 40 Prague 2 Czech Republic
| | - Martin Dračínský
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences Flemingovo nám. 2 160 00 Prague 6 Czech Republic
| | - Josef Cvačka
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences Flemingovo nám. 2 160 00 Prague 6 Czech Republic
| | - Shanshan Guan
- Department of Chemistry and Biochemistry, Ohio University Athens Ohio 45701 USA
| | - Benjamin J Bythell
- Department of Chemistry and Biochemistry, Ohio University Athens Ohio 45701 USA
| | - Ivana Císařová
- Department of Inorganic Chemistry, Faculty of Science, Charles University in Prague 128 40 Prague 2 Czech Republic
| | - Eric Masson
- Department of Chemistry and Biochemistry, Ohio University Athens Ohio 45701 USA
| | - Jiří Kaleta
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences Flemingovo nám. 2 160 00 Prague 6 Czech Republic
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6
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Emissive‐Dye/Cucurbit[n]uril‐Based Fluorescence Probes for Sensing Applications. ChemistrySelect 2023. [DOI: 10.1002/slct.202204833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2023]
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7
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El-Barghouthi MI, Assaf KI, Bodoor K, Alhamed DF, Alnajjar MA. Computational Study on the Encapsulation of Glucosamine Anomers by Cucurbit[6]uril and Cucurbit[8]uril in Aqueous Solution. ARAB J CHEM 2023. [DOI: 10.1016/j.arabjc.2023.104779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2023] Open
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8
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Duan Q, Chen R, Deng S, Yang C, Ji X, Qi G, Li H, Li X, Chen S, Lou M, Lu K. Cucurbit[ n]uril-based fluorescent indicator-displacement assays for sensing organic compounds. Front Chem 2023; 11:1124705. [PMID: 36711232 PMCID: PMC9880063 DOI: 10.3389/fchem.2023.1124705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Accepted: 01/05/2023] [Indexed: 01/14/2023] Open
Abstract
The widespread conversion of synthetic receptors into luminescent sensors has been achieved via the use of fluorescent-indicator displacement assays (F-IDAs). Due to their rigid structures and efficient binding affinities, cucurbit[n]urils, combined with a variety of fluorescent guests, have gained extensive utilization in fluorescent-indicator displacement assays for sensing non-fluorescent or weakly fluorescent organic compounds (analytes) in a selective and specific manner. This mini-review summarizes recent advances in the design of cucurbit[n]uril-based fluorescent-indicator displacement assays and discusses the current challenges and future prospects in this area.
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Affiliation(s)
- Qunpeng Duan
- School of Chemical and Printing-Dyeing Engineering, Henan University of Engineering, Zhengzhou, China,*Correspondence: Qunpeng Duan, ; Kui Lu,
| | - Ran Chen
- School of Chemical and Printing-Dyeing Engineering, Henan University of Engineering, Zhengzhou, China
| | - Su Deng
- School of Chemical and Printing-Dyeing Engineering, Henan University of Engineering, Zhengzhou, China
| | - Cheng Yang
- School of Chemical and Printing-Dyeing Engineering, Henan University of Engineering, Zhengzhou, China
| | - Xinxin Ji
- School of Chemical and Printing-Dyeing Engineering, Henan University of Engineering, Zhengzhou, China
| | - Gege Qi
- School of Chemical and Printing-Dyeing Engineering, Henan University of Engineering, Zhengzhou, China
| | - Hui Li
- School of Chemical and Printing-Dyeing Engineering, Henan University of Engineering, Zhengzhou, China
| | - Xiaohan Li
- School of Chemical and Printing-Dyeing Engineering, Henan University of Engineering, Zhengzhou, China
| | - Shihao Chen
- School of Chemical and Printing-Dyeing Engineering, Henan University of Engineering, Zhengzhou, China
| | - Mengen Lou
- School of Chemical and Printing-Dyeing Engineering, Henan University of Engineering, Zhengzhou, China
| | - Kui Lu
- School of Chemical and Printing-Dyeing Engineering, Henan University of Engineering, Zhengzhou, China,School of Chemical Engineering and Food Science, Zhengzhou Institute of Technology, Zhengzhou, China,*Correspondence: Qunpeng Duan, ; Kui Lu,
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9
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Alfadil AA, Elbashir AA, Omar MMA, Suliman FO. Investigating the Interaction of Anthracene and Phenanthrene with Cucurbit[
n
]urils (n=6‐8): Experimental and Molecular Dynamics Studies. ChemistrySelect 2022. [DOI: 10.1002/slct.202203043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Amira A. Alfadil
- Department of Chemistry College of Science Sultan Qaboos University, Box 36 Al-Khoud 123 Oman
- University of Khartoum Faculty of Science Department of Chemistry Khartoum 11114 Sudan
| | - Abdalla A. Elbashir
- University of Khartoum Faculty of Science Department of Chemistry Khartoum 11114 Sudan
- Department of Chemistry College of Science King Faisal University Al-Hofuf Al-Ahsa 31982 Saudi Arabia
| | - Mei Musa Ali Omar
- Department of Chemistry Central Laboratory Ministry of Higher Education & Scientific Research P. O. Box Office 7099 Khartoum Sudan
| | - FakhrEldin O. Suliman
- Department of Chemistry College of Science Sultan Qaboos University, Box 36 Al-Khoud 123 Oman
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10
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Acyclic cucurbiturils and their applications. J INCL PHENOM MACRO 2022. [DOI: 10.1007/s10847-022-01159-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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11
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Grimm LM, Spicher S, Tkachenko B, Schreiner PR, Grimme S, Biedermann F. The Role of Packing, Dispersion, Electrostatics, and Solvation in High-Affinity Complexes of Cucurbit[n]urils with Uncharged Polar Guests. Chemistry 2022; 28:e202200529. [PMID: 35612260 PMCID: PMC9401061 DOI: 10.1002/chem.202200529] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Indexed: 12/21/2022]
Abstract
The rationalization of non-covalent binding trends is both of fundamental interest and provides new design concepts for biomimetic molecular systems. Cucurbit[n]urils (CBn) are known for a long time as the strongest synthetic binders for a wide range of (bio)organic compounds in water. However, their host-guest binding mechanism remains ambiguous despite their symmetric and simple macrocyclic structure and the wealth of literature reports. We herein report experimental thermodynamic binding parameters (ΔG, ΔH, TΔS) for CB7 and CB8 with a set of hydroxylated adamantanes, di-, and triamantanes as uncharged, rigid, and spherical/ellipsoidal guests. Binding geometries and binding energy decomposition were obtained from high-level theory computations. This study reveals that neither London dispersion interactions, nor electronic energies or entropic factors are decisive, selectivity-controlling factors for CBn complexes. In contrast, peculiar host-related solvation effects were identified as the major factor for rationalizing the unique behavior and record-affinity characteristics of cucurbit[n]urils.
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Affiliation(s)
- Laura M. Grimm
- Institute of NanotechnologyKarlsruhe Institute of TechnologyHermann-von-Helmholtz Platz 176344Eggenstein-LeopoldshafenGermany
| | - Sebastian Spicher
- Mulliken Center for Theoretical ChemistryInstitute of Physical and Theoretical ChemistryUniversity of BonnBeringstraße 453115BonnGermany
| | - Boryslav Tkachenko
- Institute of Organic ChemistryJustus Liebig UniversityHeinrich-Buff-Ring 1735392GiessenGermany
| | - Peter R. Schreiner
- Institute of Organic ChemistryJustus Liebig UniversityHeinrich-Buff-Ring 1735392GiessenGermany
| | - Stefan Grimme
- Mulliken Center for Theoretical ChemistryInstitute of Physical and Theoretical ChemistryUniversity of BonnBeringstraße 453115BonnGermany
| | - Frank Biedermann
- Institute of NanotechnologyKarlsruhe Institute of TechnologyHermann-von-Helmholtz Platz 176344Eggenstein-LeopoldshafenGermany
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12
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Duan Q, Xing Y, Guo K. The Detection of Food Additives Using a Fluorescence Indicator Based on 6– p–Toluidinylnaphthalence-2-sulfonate and Cationic Pillar[6]arene. Front Chem 2022; 10:925881. [PMID: 35711954 PMCID: PMC9194816 DOI: 10.3389/fchem.2022.925881] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Accepted: 05/12/2022] [Indexed: 01/14/2023] Open
Abstract
The current study investigated host-guest complexation in 6-p-toluidinylnaphthalene-2-sulfonate (TNS), a fluorescence probe used to investigate hydrophobic regions that contain the water-soluble cationic pillar[6]arene (CP6). After complexation with CP6, the fluorescence intensity of TNS was significantly increased. The decreases in the fluorescence intensity of the TNS•CP6 complex when phenolic food-additives are added have been used in indicator displacement assays to detect food additives in the water.
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13
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Nazimuddin M, Barbero H, Rabbani R, Masson E. Cucurbiturils mimicked by low polarizability solvents with pre-formed cavities: an empirical model to predict hydrocarbon selectivity. Chem Sci 2022; 13:4388-4396. [PMID: 35509473 PMCID: PMC9006924 DOI: 10.1039/d1sc06728a] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Accepted: 03/21/2022] [Indexed: 11/30/2022] Open
Abstract
Relative binding affinities of a series of nine rigid hydrocarbons towards the cavity formed by a portion of the inner wall of cucurbit[8]uril (CB[8]) and a positive auxiliary guest were determined by competitive 19F NMR titrations in deuterium oxide. The corresponding free binding energies were corrected by the hydrocarbon computed solvation energies to obtain their free energies of transfer from the gas phase to the CB[8]/auxiliary guest cavity. These energies correlate linearly with the hydrocarbon static polarizabilities, thereby suggesting that the selectivity is driven, perhaps exclusively, by dispersive interactions between the hydrocarbons and the tailor-made cavity, regardless of the degree of unsaturation of the guests. The free energies of transfer also correlate linearly with the energy released upon introduction of the hydrocarbon into a pre-formed cavity extruded from a solvent (benzene) selected to mimic the polarity and polarizability of the CB[8]/auxiliary probe cavity – and this, with a unity slope. Among other features, this empirical model also accurately predicts the relative binding affinities of various rigid hydrocarbons to CB[6] and CB[7], as well as noble gases to CB[5], when the macrocycles are mimicked with pre-formed cavities in perfluorohexane or perfluorohexane/benzene mixtures, both being notoriously non-polar and non-polarizable environments. Mimicking cucurbiturils with low polarizability solvents and pre-formed cavities allows the in silico prediction of their selectivities towards hydrocarbons and noble gases in aqueous solution.![]()
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Affiliation(s)
- Md Nazimuddin
- Department of Chemistry and Biochemistry, Ohio University Athens Ohio 45701 USA
| | - Héctor Barbero
- Department of Chemistry and Biochemistry, Ohio University Athens Ohio 45701 USA .,GIR MIOMeT, IU CINQUIMA/Química Inorgánica, Facultad de Ciencias, Universidad de Valladolid Valladolid E47011 Spain
| | - Ramin Rabbani
- Department of Chemistry and Biochemistry, Ohio University Athens Ohio 45701 USA
| | - Eric Masson
- Department of Chemistry and Biochemistry, Ohio University Athens Ohio 45701 USA
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14
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Study on geometry and chemical activity of twisted cucurbit[13]uril based on density functional theory. CHEMICAL PAPERS 2022. [DOI: 10.1007/s11696-022-02146-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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15
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Krämer J, Kang R, Grimm LM, De Cola L, Picchetti P, Biedermann F. Molecular Probes, Chemosensors, and Nanosensors for Optical Detection of Biorelevant Molecules and Ions in Aqueous Media and Biofluids. Chem Rev 2022; 122:3459-3636. [PMID: 34995461 PMCID: PMC8832467 DOI: 10.1021/acs.chemrev.1c00746] [Citation(s) in RCA: 123] [Impact Index Per Article: 61.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Indexed: 02/08/2023]
Abstract
Synthetic molecular probes, chemosensors, and nanosensors used in combination with innovative assay protocols hold great potential for the development of robust, low-cost, and fast-responding sensors that are applicable in biofluids (urine, blood, and saliva). Particularly, the development of sensors for metabolites, neurotransmitters, drugs, and inorganic ions is highly desirable due to a lack of suitable biosensors. In addition, the monitoring and analysis of metabolic and signaling networks in cells and organisms by optical probes and chemosensors is becoming increasingly important in molecular biology and medicine. Thus, new perspectives for personalized diagnostics, theranostics, and biochemical/medical research will be unlocked when standing limitations of artificial binders and receptors are overcome. In this review, we survey synthetic sensing systems that have promising (future) application potential for the detection of small molecules, cations, and anions in aqueous media and biofluids. Special attention was given to sensing systems that provide a readily measurable optical signal through dynamic covalent chemistry, supramolecular host-guest interactions, or nanoparticles featuring plasmonic effects. This review shall also enable the reader to evaluate the current performance of molecular probes, chemosensors, and nanosensors in terms of sensitivity and selectivity with respect to practical requirement, and thereby inspiring new ideas for the development of further advanced systems.
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Affiliation(s)
- Joana Krämer
- Institute
of Nanotechnology, Karlsruhe Institute of
Technology (KIT), Hermann-von-Helmholtz Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Rui Kang
- Institute
of Nanotechnology, Karlsruhe Institute of
Technology (KIT), Hermann-von-Helmholtz Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Laura M. Grimm
- Institute
of Nanotechnology, Karlsruhe Institute of
Technology (KIT), Hermann-von-Helmholtz Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Luisa De Cola
- Institute
of Nanotechnology, Karlsruhe Institute of
Technology (KIT), Hermann-von-Helmholtz Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
- Dipartimento
DISFARM, University of Milano, via Camillo Golgi 19, 20133 Milano, Italy
- Department
of Molecular Biochemistry and Pharmacology, Instituto di Ricerche Farmacologiche Mario Negri, IRCCS, 20156 Milano, Italy
| | - Pierre Picchetti
- Institute
of Nanotechnology, Karlsruhe Institute of
Technology (KIT), Hermann-von-Helmholtz Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Frank Biedermann
- Institute
of Nanotechnology, Karlsruhe Institute of
Technology (KIT), Hermann-von-Helmholtz Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
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16
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Tehrani FN, Assaf KI, Hein R, Jensen CME, Nugent TC, Nau WM. Supramolecular Catalysis of a Catalysis-Resistant Diels–Alder Reaction: Almost Theoretical Acceleration of Cyclopentadiene Dimerization inside Cucurbit[7]uril. ACS Catal 2022. [DOI: 10.1021/acscatal.1c05659] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Foad N. Tehrani
- Department of Life Sciences and Chemistry, Jacobs University Bremen, Campus Ring 1, 28759 Bremen, Germany
| | - Khaleel I. Assaf
- Department of Life Sciences and Chemistry, Jacobs University Bremen, Campus Ring 1, 28759 Bremen, Germany
- Department of Chemistry, Faculty of Science, Al-Balqa Applied University, 19117 Al-Salt, Jordan
| | - Robert Hein
- Department of Life Sciences and Chemistry, Jacobs University Bremen, Campus Ring 1, 28759 Bremen, Germany
| | - Casper M. E. Jensen
- Department of Life Sciences and Chemistry, Jacobs University Bremen, Campus Ring 1, 28759 Bremen, Germany
| | - Thomas C. Nugent
- Department of Life Sciences and Chemistry, Jacobs University Bremen, Campus Ring 1, 28759 Bremen, Germany
| | - Werner M. Nau
- Department of Life Sciences and Chemistry, Jacobs University Bremen, Campus Ring 1, 28759 Bremen, Germany
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17
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Duan Q, Xing Y, Guo K. Carboxylato-Pillar[6]arene-Based Fluorescent Indicator Displacement Assays for Caffeine Sensing. Front Chem 2022; 9:816069. [PMID: 34993181 PMCID: PMC8725816 DOI: 10.3389/fchem.2021.816069] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Accepted: 12/02/2021] [Indexed: 11/18/2022] Open
Abstract
In the present work, we have developed a new indicator displacement system based on pillararene for anionic water-soluble carboxylato pillar [6] arene (WP6) and aromatic fluorescent dye safranine T (ST). A large fluorescence enhancement and colour change of ST were observed after complexation with electron-rich cavity in WP6 because of host-guest twisted intramolecular charge-transfer interactions. The constructed pillararene-indicator displacement system can be applied for caffeine selective detection in water.
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Affiliation(s)
- Qunpeng Duan
- School of Chemical and Printing-dyeing Engineering, Henan University of Engineering, Zhengzhou, China
| | - Yibo Xing
- School of Chemical and Printing-dyeing Engineering, Henan University of Engineering, Zhengzhou, China
| | - Kainan Guo
- School of Chemical and Printing-dyeing Engineering, Henan University of Engineering, Zhengzhou, China
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18
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Pal R, Poddar A, Chattaraj PK. Atomic Clusters: Structure, Reactivity, Bonding, and Dynamics. Front Chem 2021; 9:730548. [PMID: 34485247 PMCID: PMC8415529 DOI: 10.3389/fchem.2021.730548] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Accepted: 07/13/2021] [Indexed: 11/13/2022] Open
Abstract
Atomic clusters lie somewhere in between isolated atoms and extended solids with distinctly different reactivity patterns. They are known to be useful as catalysts facilitating several reactions of industrial importance. Various machine learning based techniques have been adopted in generating their global minimum energy structures. Bond-stretch isomerism, aromatic stabilization, Rener-Teller effect, improved superhalogen/superalkali properties, and electride characteristics are some of the hallmarks of these clusters. Different all-metal and nonmetal clusters exhibit a variety of aromatic characteristics. Some of these clusters are dynamically stable as exemplified through their fluxional behavior. Several of these cluster cavitands are found to be agents for effective confinement. The confined media cause drastic changes in bonding, reactivity, and other properties, for example, bonding between two noble gas atoms, and remarkable acceleration in the rate of a chemical reaction under confinement. They have potential to be good hydrogen storage materials and also to activate small molecules for various purposes. Many atomic clusters show exceptional opto-electronic, magnetic, and nonlinear optical properties. In this Review article, we intend to highlight all these aspects.
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Affiliation(s)
- Ranita Pal
- Advanced Technology Development Centre, Indian Institute of Technology Kharagpur, Kharagpur, India
| | - Arpita Poddar
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, India
| | - Pratim Kumar Chattaraj
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, India
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, India
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19
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Alnajjar MA, Nau WM, Hennig A. A reference scale of cucurbit[7]uril binding affinities. Org Biomol Chem 2021; 19:8521-8529. [PMID: 34378628 DOI: 10.1039/d1ob01304a] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The accurate determination of ultra-high binding affinities in supramolecular host-guest chemistry is a challenging endeavour because direct binding titrations are generally limited to affinities <106 M-1 due to sensitivity constraints of common titration methods. To determine higher affinities, competitive titrations are usually performed, in which one compound with a well established binding affinity serves as a reference. Herein, we propose a reference scale for such competitive titrations with the host cucurbit[7]uril (CB7) comprising binding affinities in the range from 103 to 1015 M-1. The suggested reference compounds are commercially available and will aid in the future determination of CB7 binding affinities for stimuli-responsive host-guest systems.
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Affiliation(s)
- Mohammad A Alnajjar
- Department of Life Sciences and Chemistry, Jacobs University Bremen, Campus Ring 1, 28759 Bremen, Germany.
| | - Werner M Nau
- Department of Life Sciences and Chemistry, Jacobs University Bremen, Campus Ring 1, 28759 Bremen, Germany.
| | - Andreas Hennig
- Department of Life Sciences and Chemistry, Jacobs University Bremen, Campus Ring 1, 28759 Bremen, Germany. .,Institute of Chemistry of New Materials, Universität Osnabrück, Barbarastr. 7, 49080 Osnabrück, Germany.
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20
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Zhang G, Hua B, Dey A, Ghosh M, Moosa BA, Khashab NM. Intrinsically Porous Molecular Materials (IPMs) for Natural Gas and Benzene Derivatives Separations. Acc Chem Res 2021; 54:155-168. [PMID: 33332097 DOI: 10.1021/acs.accounts.0c00582] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
ConspectusSeparating and purifying chemicals without heat would go a long way toward reducing the overall energy consumption and the harmful environmental footprint of the process. Molecular separation processes are critical for the production of raw materials, commodity chemicals, and specialty fuels. Over 50% of the energy used in the production of these materials is spent on separation and purification processes, which primarily includes vacuum and cryogenic distillations. Chemical manufacturers are now investigating modest thermal approaches, such as membranes and adsorbent materials, as they are more cognizant than ever of the need to save energy and prevent pollution. Porous materials, such as zeolites, metal-organic frameworks (MOFs), and covalent organic frameworks (COFs), have dominated the field of industrial separations as their high surface areas and robust pores make them ideal candidates for molecular separations of gases and hydrocarbons. Separation processes involving porous materials can save 70%-90% of energy costs compared to that of thermally driven distillations. However, most porous materials have low thermal, chemical, and moisture stability, in addition to limited solution processability, which tremendously constrain their broad industrial translation. Intrinsically porous molecular materials (IPMs) are a subclass of porous molecular materials that are comprised of molecular host macrocycles or cages that absorb guests in or around their intrinsic cavity. IPMs range from discrete porous molecules to assemblies with amorphous or highly crystalline structures that are held together by weak supramolecular interactions. Compared to the coordination or dynamic covalent bond-constructed porous frameworks, IPMs possess high thermal, chemical, and moisture stability and maintain their porosity under critical conditions. Moreover, the intrinsic porosity endows IPMs with excellent host-guest properties in solid, liquid (organic or aqueous), and gas states, which can be further utilized to construct diverse separation strategies, such as solid-gas adsorption, solid-liquid absorption, and liquid-liquid extraction. The diversity of host-guest interactions in the engineered IPMs affords a plethora of possibilities for the development of the ideal "molecular sieves". Herein, we present a different take on the applicability of intrinsically porous materials such as cyclodextrin (CD), cucurbiturils (CB), pillararene (P), trianglamines (T), and porous organic cages (POCs) that showed an impressive performance in gas purification and benzene derivatives separation. IPMs can be easily scaled up and are quite stable and solution processable that consequently facilitates a favorable technological transformation from the traditional energy-intensive separations. We will account for the main advances in molecular host-guest chemistry to design "on-demand" separation processes and also outline future challenges and opportunities for this promising technology.
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Affiliation(s)
- Gengwu Zhang
- Smart Hybrid Materials Laboratory (SHMs), Advanced Membranes and Porous Materials Center, Physical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Bin Hua
- Smart Hybrid Materials Laboratory (SHMs), Advanced Membranes and Porous Materials Center, Physical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Avishek Dey
- Smart Hybrid Materials Laboratory (SHMs), Advanced Membranes and Porous Materials Center, Physical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Munmun Ghosh
- Smart Hybrid Materials Laboratory (SHMs), Advanced Membranes and Porous Materials Center, Physical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Basem A. Moosa
- Smart Hybrid Materials Laboratory (SHMs), Advanced Membranes and Porous Materials Center, Physical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Niveen M. Khashab
- Smart Hybrid Materials Laboratory (SHMs), Advanced Membranes and Porous Materials Center, Physical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
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21
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Sedgwick AC, Brewster JT, Wu T, Feng X, Bull SD, Qian X, Sessler JL, James TD, Anslyn EV, Sun X. Indicator displacement assays (IDAs): the past, present and future. Chem Soc Rev 2021; 50:9-38. [DOI: 10.1039/c9cs00538b] [Citation(s) in RCA: 69] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Indicator displacement assays (IDAs) offer a unique and innovative approach to molecular sensing. This Tutorial review discusses the basic concepts of each IDA strategy and illustrates their use in sensing applications.
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Affiliation(s)
- Adam C. Sedgwick
- Department of Chemistry
- The University of Texas at Austin
- Austin
- USA
| | | | - Tianhong Wu
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education
- School of Life Science and Technology
- Xi’an Jiaotong University
- Xi’an
- P. R. China
| | - Xing Feng
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education
- School of Life Science and Technology
- Xi’an Jiaotong University
- Xi’an
- P. R. China
| | | | - Xuhong Qian
- State Key Laboratory of Bioreactor Engineering
- Shanghai Key Laboratory of Chemical Biology
- School of Pharmacy
- East China University of Science and Technology
- Shanghai 200237
| | | | | | - Eric V. Anslyn
- Department of Chemistry
- The University of Texas at Austin
- Austin
- USA
| | - Xiaolong Sun
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education
- School of Life Science and Technology
- Xi’an Jiaotong University
- Xi’an
- P. R. China
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22
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He S, Zhiti A, Barba-Bon A, Hennig A, Nau WM. Real-Time Parallel Artificial Membrane Permeability Assay Based on Supramolecular Fluorescent Artificial Receptors. Front Chem 2020; 8:597927. [PMID: 33330387 PMCID: PMC7673371 DOI: 10.3389/fchem.2020.597927] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2020] [Accepted: 10/06/2020] [Indexed: 01/17/2023] Open
Abstract
Parallel artificial membrane permeability assay (PAMPA) is a screening tool for the evaluation of drug permeability across various biological membrane systems in a microplate format. In PAMPA, a drug candidate is allowed to pass through the lipid layer of a particular well during an incubation period of, typically, 10–16 h. In a second step, the samples of each well are transferred to a UV-Vis–compatible microplate and optically measured (applicable only to analytes with sufficient absorbance) or sampled by mass-spectrometric analysis. The required incubation period, sample transfer, and detection methods jointly limit the scalability of PAMPA to high-throughput screening format. We introduce a modification of the PAMPA method that allows direct fluorescence detection, without sample transfer, in real time (RT-PAMPA). The method employs the use of a fluorescent artificial receptor (FAR), composed of a macrocycle in combination with an encapsulated fluorescent dye, administered in the acceptor chamber of conventional PAMPA microplates. Because the detection principle relies on the molecular recognition of an analyte by the receptor and the associated fluorescence response, concentration changes of any analyte that binds to the receptor can be monitored (molecules with aromatic residues in the present example), regardless of the spectroscopic properties of the analyte itself. Moreover, because the fluorescence of the (upper) acceptor well can be read out directly by fluorescence in a microplate reader, the permeation of the drug through the planar lipid layer can be monitored in real time. Compared with the traditional assay, RT-PAMPA allows not only quantification of the permeability characteristics but also rapid differentiation between fast and slow diffusion events.
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Affiliation(s)
- Suhang He
- Department of Life Sciences and Chemistry, Jacobs University Bremen, Bremen, Germany
| | - Anxhela Zhiti
- Department of Life Sciences and Chemistry, Jacobs University Bremen, Bremen, Germany
| | - Andrea Barba-Bon
- Department of Life Sciences and Chemistry, Jacobs University Bremen, Bremen, Germany
| | - Andreas Hennig
- Department of Life Sciences and Chemistry, Jacobs University Bremen, Bremen, Germany
| | - Werner M Nau
- Department of Life Sciences and Chemistry, Jacobs University Bremen, Bremen, Germany
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23
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Mutihac RC, Bunaciu AA, Buschmann HJ, Mutihac L. A brief overview on supramolecular analytical chemistry of cucurbit[n]urils and hemicucurbit[n]urils. J INCL PHENOM MACRO 2020. [DOI: 10.1007/s10847-020-01019-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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24
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Sinn S, Krämer J, Biedermann F. Teaching old indicators even more tricks: binding affinity measurements with the guest-displacement assay (GDA). Chem Commun (Camb) 2020; 56:6620-6623. [PMID: 32459225 DOI: 10.1039/d0cc01841d] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A simple change has important consequences: the guest-displacement assay (GDA) is introduced which allows for binding affinity determinations of supramolecular complexes with spectroscopically silent hosts and guests. GDA is complementary to indicator-displacement assay for affinity measurements with soluble components, but is superior for insoluble or for weakly binding guests.
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Affiliation(s)
- Stephan Sinn
- Karlsruhe Institute of Technology (KIT), Institute of Nanotechnology (INT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany.
| | - Joana Krämer
- Karlsruhe Institute of Technology (KIT), Institute of Nanotechnology (INT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany.
| | - Frank Biedermann
- Karlsruhe Institute of Technology (KIT), Institute of Nanotechnology (INT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany.
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25
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Xia D, Wang P, Ji X, Khashab NM, Sessler JL, Huang F. Functional Supramolecular Polymeric Networks: The Marriage of Covalent Polymers and Macrocycle-Based Host–Guest Interactions. Chem Rev 2020; 120:6070-6123. [DOI: 10.1021/acs.chemrev.9b00839] [Citation(s) in RCA: 263] [Impact Index Per Article: 65.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Danyu Xia
- Scientific Instrument Center, Shanxi University, Taiyuan 030006, P. R. China
| | - Pi Wang
- Ministry of Education Key Laboratory of Interface Science and Engineering in Advanced Materials, Taiyuan University of Technology, Taiyuan 030024, P. R. China
| | - Xiaofan Ji
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
| | - Niveen M. Khashab
- Smart Hybrid Materials (SHMS) Laboratory, Chemical Science Program, King Abdullah University of Science and Technology (KAUST), 4700 King Abdullah University of Science and Technology, Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Jonathan L. Sessler
- Department of Chemistry, The University of Texas at Austin, 105 East 24th Street, Stop A5300, Austin, Texas 78712-1224, United States
- Center for Supramolecular Chemistry and Catalysis, Shanghai University, Shanghai 200444, P. R. China
| | - Feihe Huang
- State Key Laboratory of Chemical Engineering, Center for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
- Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
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26
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Shape-Induced Selective Separation of Ortho-substituted Benzene Isomers Enabled by Cucurbit[7]uril Host Macrocycles. Chem 2020. [DOI: 10.1016/j.chempr.2020.03.003] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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27
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Zhou Y, Jie K, Zhao R, Huang F. Supramolecular-Macrocycle-Based Crystalline Organic Materials. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1904824. [PMID: 31535778 DOI: 10.1002/adma.201904824] [Citation(s) in RCA: 86] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Revised: 08/27/2019] [Indexed: 06/10/2023]
Abstract
Supramolecular macrocycles are well known as guest receptors in supramolecular chemistry, especially host-guest chemistry. In addition to their wide applications in host-guest chemistry and related areas, macrocycles have also been employed to construct crystalline organic materials (COMs) owing to their particular structures that combine both rigidity and adaptivity. There are two main types of supramolecular-macrocycle-based COMs: those constructed from macrocycles themselves and those prepared from macrocycles with other organic linkers. This review summarizes recent developments in supramolecular-macrocycle-based COMs, which are categorized by various types of macrocycles, including cyclodextrins, calixarenes, resorcinarenes, pyrogalloarenes, cucurbiturils, pillararenes, and others. Effort is made to focus on the structures of supramolecular-macrocycle-based COMs and their structure-function relationships. In addition, the application of supramolecular-macrocycle-based COMs in gas storage or separation, molecular separation, solid-state electrolytes, proton conduction, iodine capture, water or environmental treatment, etc., are also presented. Finally, perspectives and future challenges in the field of supramolecular-macrocycle-based COMs are discussed.
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Affiliation(s)
- Yujuan Zhou
- State Key Laboratory of Chemical Engineering, Department of Chemistry, Center for Chemistry of High-Performance & Novel Materials, Zhejiang University, Hangzhou, 310027, P. R. China
| | - Kecheng Jie
- State Key Laboratory of Chemical Engineering, Department of Chemistry, Center for Chemistry of High-Performance & Novel Materials, Zhejiang University, Hangzhou, 310027, P. R. China
| | - Run Zhao
- State Key Laboratory of Chemical Engineering, Department of Chemistry, Center for Chemistry of High-Performance & Novel Materials, Zhejiang University, Hangzhou, 310027, P. R. China
| | - Feihe Huang
- State Key Laboratory of Chemical Engineering, Department of Chemistry, Center for Chemistry of High-Performance & Novel Materials, Zhejiang University, Hangzhou, 310027, P. R. China
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28
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Assaf KI, Abed Alfattah H, Eftaiha AF, Bardaweel SK, Alnajjar MA, Alsoubani FA, Qaroush AK, El-Barghouthi MI, Nau WM. Encapsulation of ionic liquids inside cucurbiturils. Org Biomol Chem 2020; 18:2120-2128. [PMID: 32129437 DOI: 10.1039/d0ob00001a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cucurbit[n]urils (CBn, n = 6-8) serve as molecular receptors for imidazolium-based ionic liquids (ILs) in aqueous solution. The amphiphilic nature of 1-alkyl-3-methylimidazolium guests (Cnmim), with a cationic imidazolium residue and a hydrophobic alkyl chain, enabled their complexation with CBn through a combination of the hydrophobic effect and ion-dipole interactions. 1H NMR experiments revealed that the cavity of CBn can host the hydrophobic chain of the ILs, while one of the carbonyl rims served as a docking site for the imidazolium ring. The structure of the complexes was further analyzed by molecular dynamics (MD) simulations, which indicated that the cavity of CB6 can accommodate up to 5 carbon atoms, while the larger cavity of CB7 and CB8 can encapsulate longer alkyl chains in folded conformations. Isothermal titration calorimetry (ITC) experiments provided up to micromolar affinity of ILs to CBn in aqueous solution, which was independently quantified by indicator displacement titrations.
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Affiliation(s)
- Khaleel I Assaf
- Department of Chemistry, Al-Balqa Applied University, Al-Salt 19117, Jordan.
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29
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Singh VR, Singh PK. A supramolecule based fluorescence turn-on and ratiometric sensor for ATP in aqueous solution. J Mater Chem B 2020; 8:1182-1190. [PMID: 31957759 DOI: 10.1039/c9tb02403d] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Considering the biological relevance of adenosine triphosphate (ATP) as an "energy currency" in all organisms and significance of its detection in various diseased conditions, enormous efforts have been made to develop selective and sensitive fluorescent sensors for the detection of ATP. However, these developed sensor probes frequently involve technically challenging and time-consuming synthetic protocols for the production of sensor molecules and often suffer from poor solubility in aqueous medium. Another major disadvantage of these developed sensor systems is their single wavelength based operation which makes their performance susceptible to minute changes in experimental conditions. Herein, we report a fluorescence turn-on ratiometric sensor for the detection of ATP which operates by the dissociation of Thioflavin-T-sulphated-β-cyclodextrin supramolecular assembly by Zn2+ followed by ATP induced reassociation of the same. This modulation of the monomer/aggregate equilibrium of the supramolecular assembly followed by subsequent interactions with Zn2+ and ATP acts as an optimal scheme for the ratiometric detection of ATP. Overall this supramolecular ensemble based sensing platform provides a simple, sensitive, selective and label free detection approach for ATP in aqueous solution. Importantly, our sensor platform responds to ATP in the biologically complex media of serum samples suggesting its potential for possible applications in real-life scenarios.
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Affiliation(s)
- Vidya R Singh
- Radiation & Photochemistry Division, Bhabha Atomic Research Centre, Mumbai-400085, Maharashtra, India.
| | - Prabhat K Singh
- Radiation & Photochemistry Division, Bhabha Atomic Research Centre, Mumbai-400085, Maharashtra, India.
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30
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Wagner A, Ly KH, Heidary N, Szabó I, Földes T, Assaf KI, Barrow SJ, Sokołowski K, Al-Hada M, Kornienko N, Kuehnel MF, Rosta E, Zebger I, Nau WM, Scherman OA, Reisner E. Host-Guest Chemistry Meets Electrocatalysis: Cucurbit[6]uril on a Au Surface as a Hybrid System in CO 2 Reduction. ACS Catal 2020; 10:751-761. [PMID: 31929948 PMCID: PMC6945685 DOI: 10.1021/acscatal.9b04221] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 11/18/2019] [Indexed: 12/18/2022]
Abstract
![]()
The rational control of forming and stabilizing reaction
intermediates
to guide specific reaction pathways remains to be a major challenge
in electrocatalysis. In this work, we report a surface active-site
engineering approach for modulating electrocatalytic CO2 reduction using the macrocycle cucurbit[6]uril (CB[6]). A pristine
gold surface functionalized with CB[6] nanocavities was studied as
a hybrid organic–inorganic model system that utilizes host–guest
chemistry to influence the heterogeneous electrocatalytic reaction.
The combination of surface-enhanced infrared absorption (SEIRA) spectroscopy
and electrocatalytic experiments in conjunction with theoretical calculations
supports capture and reduction of CO2 inside the hydrophobic
cavity of CB[6] on the gold surface in aqueous KHCO3 at
negative potentials. SEIRA spectroscopic experiments show that the
decoration of gold with the supramolecular host CB[6] leads to an
increased local CO2 concentration close to the metal interface.
Electrocatalytic CO2 reduction on a CB[6]-coated gold electrode
indicates differences in the specific interactions between CO2 reduction intermediates within and outside the CB[6] molecular
cavity, illustrated by a decrease in current density from CO generation,
but almost invariant H2 production compared to unfunctionalized
gold. The presented methodology and mechanistic insight can guide
future design of molecularly engineered catalytic environments through
interfacial host–guest chemistry.
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Affiliation(s)
| | | | | | - István Szabó
- Department of Chemistry, King’s College London, 7 Trinity Street, SE1 1DB London, United Kingdom
| | - Tamás Földes
- Department of Chemistry, King’s College London, 7 Trinity Street, SE1 1DB London, United Kingdom
| | - Khaleel I. Assaf
- Department of Life Sciences and Chemistry, Jacobs University Bremen, Campus Ring 1, 28759 Bremen, Germany
| | | | - Kamil Sokołowski
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Mohamed Al-Hada
- Cavendish Laboratory, Department of Physics, University of Cambridge, JJ Thomson Ave, Cambridge CB3 0HE, United Kingdom
| | | | | | - Edina Rosta
- Department of Chemistry, King’s College London, 7 Trinity Street, SE1 1DB London, United Kingdom
| | - Ingo Zebger
- Max Volmer Laboratorium für Biophysikalische Chemie, Sekr. PC14, Institut für Chemie, Technische Universität Berlin, Straße des 17. Juni 135, 10623 Berlin, Germany
| | - Werner M. Nau
- Department of Life Sciences and Chemistry, Jacobs University Bremen, Campus Ring 1, 28759 Bremen, Germany
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31
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Andrýs R, Klusoňová A, Lísa M, Žd'árová Karasová J. Encapsulation of oxime acetylcholinesterase reactivators: influence of physiological conditions on the stability of oxime-cucurbit[7]uril complexes. NEW J CHEM 2020. [DOI: 10.1039/d0nj03102j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The influence of physiological conditions on the host–guest chemistry of oxime acetylcholinesterase reactivators with cucurbit[7]urile was investigated to increase their effectiveness for the treatment of organophosphate intoxication.
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Affiliation(s)
- Rudolf Andrýs
- Department of Chemistry
- Faculty of Science
- University of Hradec Králové
- 50003 Hradec Králové
- Czech Republic
| | - Aneta Klusoňová
- Department of Chemistry
- Faculty of Science
- University of Hradec Králové
- 50003 Hradec Králové
- Czech Republic
| | - Miroslav Lísa
- Department of Chemistry
- Faculty of Science
- University of Hradec Králové
- 50003 Hradec Králové
- Czech Republic
| | - Jana Žd'árová Karasová
- Department of Toxicology and Military Pharmacy
- Faculty of Military Health Sciences Hradec Králové
- University of Defence
- Praha
- Czech Republic
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32
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Sundararajan M, Park B, Baik MH. Regioselective Oxidation of C-H Bonds in Unactivated Alkanes by a Vanadium Superoxo Catalyst Bound to a Supramolecular Host. Inorg Chem 2019; 58:16250-16255. [PMID: 31721568 DOI: 10.1021/acs.inorgchem.9b02803] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
A vanadyl ion bound to a cucurbituril (CB) host was reported to oxidize pentane to 2-pentanol in the presence of an oxidizer. DFT calculations suggest that the catalyst selectively reacts with stronger C-H bonds in pentane over weaker C-H bonds in cyclohexane due to size exclusion by the CB host. The active catalyst is an unprecedented vanadium superoxo species bound to the host, and the selectivity toward secondary over the primary C-H bond is the result of a higher degree of charge transfer from the secondary compared to the primary position.
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Affiliation(s)
- Mahesh Sundararajan
- Center for Catalytic Hydrocarbon Functionalizations , Institute for Basic Science (IBS) , Daejeon 34141 , Republic of Korea.,Department of Chemistry , Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 34141 , Republic of Korea
| | - Bohyun Park
- Center for Catalytic Hydrocarbon Functionalizations , Institute for Basic Science (IBS) , Daejeon 34141 , Republic of Korea.,Department of Chemistry , Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 34141 , Republic of Korea
| | - Mu-Hyun Baik
- Center for Catalytic Hydrocarbon Functionalizations , Institute for Basic Science (IBS) , Daejeon 34141 , Republic of Korea.,Department of Chemistry , Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 34141 , Republic of Korea
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33
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Barrow SJ, Assaf KI, Palma A, Nau WM, Scherman OA. Preferential binding of unsaturated hydrocarbons in aryl-bisimidazolium·cucurbit[8]uril complexes furbishes evidence for small-molecule π-π interactions. Chem Sci 2019; 10:10240-10246. [PMID: 32110310 PMCID: PMC7006508 DOI: 10.1039/c9sc03282g] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Accepted: 10/07/2019] [Indexed: 01/26/2023] Open
Abstract
Whilst cucurbit[n]urils (CBn) have been utilized in gas encapsulation, only the smaller CBn (n = 5 and 6) have utility given their small cavity size. In this work, we demonstrate that the large cavity of CB8 can be tailored for gaseous and volatile hydrocarbon encapsulation by restricting its internal cavity size with auxiliary aryl-bisimidazolium (Bis, aryl = phenyl, naphthyl, and biphenyl) guests. The binding constants for light hydrocarbons (C ≤ 4) are similar to those measured with CB6, while larger values are obtained with Bis·CB8 for larger guests. A clear propensity for higher affinities of alkenes relative to alkanes is observed, most pronounced with the largest delocalized naphthalene residue in the auxiliary Bis guest, which provides unique evidence for sizable small-molecule π-π interactions.
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Affiliation(s)
- Steven J Barrow
- Melville Laboratory for Polymer Synthesis , Department of Chemistry , University of Cambridge , Lensfield Road , Cambridge , CB2 1EW , UK .
| | - Khaleel I Assaf
- Department of Life Sciences and Chemistry , Jacobs University Bremen , Campus Ring 1 , D-28759 Bremen , Germany .
| | - Aniello Palma
- Melville Laboratory for Polymer Synthesis , Department of Chemistry , University of Cambridge , Lensfield Road , Cambridge , CB2 1EW , UK .
| | - Werner M Nau
- Department of Life Sciences and Chemistry , Jacobs University Bremen , Campus Ring 1 , D-28759 Bremen , Germany .
| | - Oren A Scherman
- Melville Laboratory for Polymer Synthesis , Department of Chemistry , University of Cambridge , Lensfield Road , Cambridge , CB2 1EW , UK .
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34
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Zhan YY, Liao J, Kajita M, Kojima T, Takahashi S, Takaya T, Iwata K, Hiraoka S. Supramolecular fluorescence sensor for liquefied petroleum gas. Commun Chem 2019. [DOI: 10.1038/s42004-019-0212-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Abstract
Sensing systems of nonpolar gas molecules without functional groups such as natural gas and liquefied petroleum gas (LPG) remain difficult to develop because of lacking selective detection of such molecules over other gas molecules. Here we report a supramolecular fluorescence sensor for LPG using a 2-nm-sized cube-shaped molecular container i.e. a nanocube self-assembled from six molecules of gear-shaped amphiphiles (GSA) in water. The nanocube selectively encapsulates LPG, while it does not bind other gas molecules. Upon encapsulation of LPG in the nanocube, the fluorescence from the nanocube is enhanced by 3.9 times, which is caused by the restricted motion of the aromatic rings of GSA in the nanocube based on aggregation-induced emission. Besides the high selectivity, high sensitivity, quick response, high stability of the nanocube for LPG, and easy preparation of GSA satisfy the requirement for its practical use for an LPG sensor.
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35
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Huber G, Berthault P, Nguyen AL, Pruvost A, Barruet E, Rivollier J, Heck MP, Prieur B. Cucurbit[5]uril derivatives as oxygen carriers. Supramol Chem 2019. [DOI: 10.1080/10610278.2019.1655565] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Gaspard Huber
- NIMBE, CEA, CNRS, Université Paris-Saclay, CEA Saclay, Gif-sur-Yvette, France
| | - Patrick Berthault
- NIMBE, CEA, CNRS, Université Paris-Saclay, CEA Saclay, Gif-sur-Yvette, France
| | - Anvi Laetitia Nguyen
- SPI, Plateforme SMArt-MS, CEA, INRA, Université Paris-Saclay, Gif-sur-Yvette, France
| | - Alain Pruvost
- SPI, Plateforme SMArt-MS, CEA, INRA, Université Paris-Saclay, Gif-sur-Yvette, France
| | - Elodie Barruet
- NIMBE, CEA, CNRS, Université Paris-Saclay, CEA Saclay, Gif-sur-Yvette, France
| | - Julie Rivollier
- SCBM, Joliot, CEA, Université Paris-Saclay, Gif-sur-Yvette, France
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36
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Chakraborty D, Chattaraj PK. Bonding, Reactivity, and Dynamics in Confined Systems. J Phys Chem A 2019; 123:4513-4531. [DOI: 10.1021/acs.jpca.9b00830] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Debdutta Chakraborty
- Department of Chemistry and Centre for Theoretical Studies, Indian Institute of Technology, Kharagpur 721302, West Bengal, India
| | - Pratim Kumar Chattaraj
- Department of Chemistry and Centre for Theoretical Studies, Indian Institute of Technology, Kharagpur 721302, West Bengal, India
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
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37
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Combes S, Tran KT, Ayhan MM, Karoui H, Rockenbauer A, Tonetto A, Monnier V, Charles L, Rosas R, Viel S, Siri D, Tordo P, Clair S, Wang R, Bardelang D, Ouari O. Triangular Regulation of Cucurbit[8]uril 1:1 Complexes. J Am Chem Soc 2019; 141:5897-5907. [PMID: 30808163 DOI: 10.1021/jacs.9b00150] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Triangular shapes have inspired scientists over time and are common in nature, such as the flower petals of oxalis triangularis, the triangular faces of tetrahedrite crystals, and the icosahedron faces of virus capsids. Supramolecular chemistry has enabled the construction of triangular assemblies, many of which possess functional features. Among these structures, cucurbiturils have been used to build supramolecular triangles, and we recently reported paramagnetic cucurbit[8]uril (CB[8]) triangles, but the reasons for their formation remain unclear. Several parameters have now been identified to explain their formation. At first sight, the radical nature of the guest was of prime importance in obtaining the triangles, and we focused on extending this concept to biradicals to get supramolecular hexaradicals. Two sodium ions were systematically observed by ESI-MS in trimer structures, and the presence of Na+ triggered or strengthened the triangulation of CB[8]/guest 1:1 complexes in solution. X-ray crystallography and molecular modeling have allowed the proposal of two plausible sites of residence for the two sodium cations. We then found that a diamagnetic guest with an H-bond acceptor function is equally good at forming CB[8] triangles. Hence, a guest molecule containing a ketone function has been precisely triangulated thanks to CB[8] and sodium cations as determined by DOSY-NMR and DLS. A binding constant for the triangulation of 1:1 to 3:3 complexes is proposed. This concept has finally been extended to the triangulation of ditopic guests toward network formation by the reticulation of CB[8] triangles using dinitroxide biradicals.
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Affiliation(s)
- Sébastien Combes
- Aix Marseille Univ , CNRS, ICR , Marseille , France.,Centre de Recherche en Cancérologie de Marseille (CRCM), CNRS UMR7258, Inserm U1068, Institut Paoli-Calmettes , Aix Marseille Univ, UM105 , 13009 Marseille , France
| | | | - Mehmet Menaf Ayhan
- Aix Marseille Univ , CNRS, ICR , Marseille , France.,Department of Chemistry , Gebze Technical University , P.K.141 , 41400 Gebze , Kocaeli , Turkey
| | - Hakim Karoui
- Aix Marseille Univ , CNRS, ICR , Marseille , France
| | - Antal Rockenbauer
- Institute of Materials and Environmental Chemistry , Hungarian Academy of Sciences , P.O. Box. 286, 1519 Budapest , Hungary.,Department of Physics , Budapest University of Technology and Economics , 1111 Budapest , Hungary
| | - Alain Tonetto
- Aix Marseille Univ , CNRS, Centrale Marseille, FSCM (FR1739), PRATIM , F-13397 Marseille , France
| | - Valérie Monnier
- Aix Marseille Univ , CNRS, Centrale Marseille, FSCM, Spectropole , Marseille , France
| | | | - Roselyne Rosas
- Aix Marseille Univ , CNRS, Centrale Marseille, FSCM, Spectropole , Marseille , France
| | - Stéphane Viel
- Aix Marseille Univ , CNRS, ICR , Marseille , France.,Institut Universitaire de France , F-75005 Paris , France
| | - Didier Siri
- Aix Marseille Univ , CNRS, ICR , Marseille , France
| | - Paul Tordo
- Aix Marseille Univ , CNRS, ICR , Marseille , France
| | - Sylvain Clair
- Aix Marseille Univ, University of Toulon , CNRS, IM2NP, Marseille , France
| | - Ruibing Wang
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences , University of Macau , Taipa , Macau , China
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38
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Zhang S, Assaf KI, Huang C, Hennig A, Nau WM. Ratiometric DNA sensing with a host-guest FRET pair. Chem Commun (Camb) 2019; 55:671-674. [PMID: 30565597 DOI: 10.1039/c8cc09126a] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A supramolecular host-guest FRET pair based on a carboxyfluorescein-labelled cucurbit[7]uril (CB7-CF, as acceptor) and the fluorescent dye 4',6-diamidino-2-phenylindole (DAPI, as donor) is developed for sensing of DNA. In comparison to the commercial DNA staining dye SYBR Green I, the new chemosensing ensemble offers dual-emission signals, which allows a linear ratiometric response over a wide concentration range.
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Affiliation(s)
- Shuai Zhang
- Department of Life Sciences and Chemistry, Jacobs University Bremen, Campus Ring 1, 28759, Bremen, Germany.
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39
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Abstract
GEST NMR provides dynamic information on host–guest systems. It allows signal amplification of low concentrated complexes, detection of intermolecular interactions and quantification of guest exchange rates.
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Affiliation(s)
- Liat Avram
- Faculty of Chemistry
- Weizmann Institute of Science
- 7610001 Rehovot
- Israel
| | - Amnon Bar-Shir
- Faculty of Chemistry
- Weizmann Institute of Science
- 7610001 Rehovot
- Israel
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40
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Liu W, Ai H, Meng Z, Isaacs L, Xu Z, Xue M, Yan Q. Interactions between acyclic CB[n]-type receptors and nitrated explosive materials. Chem Commun (Camb) 2019; 55:10635-10638. [PMID: 31429448 DOI: 10.1039/c9cc05117a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The binding ability of acyclic CB[n]-type receptors M1, M2 and macrocyclic CB[7] toward explosive materials was investigated. Acyclic M2 demonstrates an overall better binding and solubilizing ability, and lower fluorescence in the presence of aromatic explosive compounds, suggesting its future application for the detection of harmful explosive materials.
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Affiliation(s)
- Wenjin Liu
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, 5 South Zhongguancun Street, Beijing 100081, P. R. China.
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41
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Zhang S, Grimm L, Miskolczy Z, Biczók L, Biedermann F, Nau WM. Binding affinities of cucurbit[n]urils with cations. Chem Commun (Camb) 2019; 55:14131-14134. [DOI: 10.1039/c9cc07687e] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
High binding constants of 19 inorganic cations with the cucurbit[n]uril homologues (CBn, n = 5, 6, 7, 8) in water were determined and the far-reaching consequences and interferences of the high affinities (millimolar to micromolar) are discussed.
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Affiliation(s)
- Shuai Zhang
- Department of Life Sciences and Chemistry
- Jacobs University
- Bremen
- Germany
| | - Laura Grimm
- Institute of Nanotechnology
- Karlsruhe Institute of Technology (KIT)
- 76344 Eggenstein-Leopoldshafen
- Germany
| | - Zsombor Miskolczy
- Institute of Materials and Environmental Chemistry
- Research Centre for Natural Sciences
- 1519 Budapest
- Hungary
| | - László Biczók
- Institute of Materials and Environmental Chemistry
- Research Centre for Natural Sciences
- 1519 Budapest
- Hungary
| | - Frank Biedermann
- Institute of Nanotechnology
- Karlsruhe Institute of Technology (KIT)
- 76344 Eggenstein-Leopoldshafen
- Germany
| | - Werner M. Nau
- Department of Life Sciences and Chemistry
- Jacobs University
- Bremen
- Germany
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42
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Paudics A, Kubinyi M, Bitter I, Bojtár M. Carboxylato-pillar[6]arene-based fluorescent indicator displacement assays for the recognition of monoamine neurotransmitters. RSC Adv 2019; 9:16856-16862. [PMID: 35516407 PMCID: PMC9064442 DOI: 10.1039/c9ra03241j] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Accepted: 05/19/2019] [Indexed: 11/30/2022] Open
Abstract
The complexation of three cationic fluorescent dye guests with the anionic host carboxylato-pillar[6]arene (WP6) was investigated by optical and NMR spectroscopy. Among the selected indicators – a stilbazolium dye (i1) and two naphthalimide derivatives with positively charged ‘anchor’ groups (i2 and i3) – i1 gave a large turn-on, i2 and i3 a large turn-off fluorescence response to the complexation. The size selectivity of the complex formation of pillararenes was demonstrated by comparing the binding constants of the complexes of the three indicators with WP6 and its smaller homologue, WP5. The systems WP6·i1 and WP6·i2 were tested as indicator displacement assays for the sensing of monoamine neurotransmitters. The WP6·i1 system functioned as a turn-off, the WP6·i2 system as a turn-on sensor for neurotransmitters, and both assays showed a good selectivity to histamine over the other neurotransmitter analytes. The complexation of three cationic fluorescent dye guests with the anionic host carboxylato-pillar[6]arene (WP6) was investigated by optical and NMR spectroscopy.![]()
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Affiliation(s)
- Adrien Paudics
- Department of Physical Chemistry and Materials Science
- Budapest University of Technology and Economics
- 1521 Budapest
- Hungary
| | - Miklós Kubinyi
- Department of Physical Chemistry and Materials Science
- Budapest University of Technology and Economics
- 1521 Budapest
- Hungary
- Institute of Environmental and Materials Chemistry
| | - István Bitter
- Department of Organic Chemistry and Technology
- Budapest University of Technology and Economics
- 1521 Budapest
- Hungary
| | - Márton Bojtár
- Department of Organic Chemistry and Technology
- Budapest University of Technology and Economics
- 1521 Budapest
- Hungary
- Chemical Biology Research Group
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43
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Zhang B, Guo Q, Luo Q, Zhang X, Zeng Q, Zhao L, Yuan Y, Jiang W, Yang Y, Liu M, Ye C, Zhou X. An intracellular diamine oxidase triggered hyperpolarized 129Xe magnetic resonance biosensor. Chem Commun (Camb) 2018; 54:13654-13657. [PMID: 30398489 DOI: 10.1039/c8cc07822j] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Here, a novel method was developed for suppressing 129Xe signals in cucurbit[6]uril (CB6) until the trigger is activated by a specific enzyme. Due to its noncovalent interactions with amino-groups and CB6, putrescine dihydrochloride (Put) was chosen for blocking interactions between 129Xe and CB6. Upon adding diamine oxidase (DAO), Put was released from CB6 and a 129Xe@CB6 Hyper-CEST signal emerged. This proposed 129Xe biosensor was then tested in small intestinal villus epithelial cells.
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Affiliation(s)
- Bin Zhang
- State Key Laboratory for Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology (HUST), Wuhan 430071, China.
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44
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Affiliation(s)
- Teresa L. Mako
- Department of Chemistry, University of Rhode Island, 140 Flagg Road, Kingston, Rhode Island 02881, United States
| | - Joan M. Racicot
- Department of Chemistry, University of Rhode Island, 140 Flagg Road, Kingston, Rhode Island 02881, United States
| | - Mindy Levine
- Department of Chemistry, University of Rhode Island, 140 Flagg Road, Kingston, Rhode Island 02881, United States
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45
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Fracaroli AM, de Rossi RH. Supramolecular Chemistry in Solid State Materials such as Metal‐Organic Frameworks. Isr J Chem 2018. [DOI: 10.1002/ijch.201800114] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Alejandro M. Fracaroli
- Instituto de Investigaciones en Físicoquímica de Córdoba, INFIQC-CONICET, Facultad de Ciencias Químicas, Departamento de Química Orgánica Universidad Nacional de Córdoba, Ciudad Universitaria X5000HUA Córdoba Argentina
| | - Rita H. de Rossi
- Instituto de Investigaciones en Físicoquímica de Córdoba, INFIQC-CONICET, Facultad de Ciencias Químicas, Departamento de Química Orgánica Universidad Nacional de Córdoba, Ciudad Universitaria X5000HUA Córdoba Argentina
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46
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Cavitation energies can outperform dispersion interactions. Nat Chem 2018; 10:1252-1257. [DOI: 10.1038/s41557-018-0146-0] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2017] [Accepted: 08/24/2018] [Indexed: 01/07/2023]
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47
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Cucurbit[7]uril Inclusion Complexes with Benzimidazole Derivatives: A Computational Study. J SOLUTION CHEM 2018. [DOI: 10.1007/s10953-018-0812-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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48
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Li FZ, Mei L, Wu QY, Tian Y, Hu KQ, Ge YC, Liu N, Gibson JK, Chai ZF, Shi WQ. An Insight into Adaptive Deformation of Rigid Cucurbit[6]uril Host in Symmetric [2]Pseudorotaxanes. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800964] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Fei-ze Li
- Key Laboratory of Radiation Physics and Technology (Sichuan University); Ministry of Education; Institute of Nuclear Science and Technology; Sichuan University; 610064 Chengdu P. R. China
- Laboratory of Nuclear Energy Chemistry; Institute of High Energy Physics; Chinese Academy of Sciences; 100049 Beijing P. R. China
| | - Lei Mei
- Laboratory of Nuclear Energy Chemistry; Institute of High Energy Physics; Chinese Academy of Sciences; 100049 Beijing P. R. China
| | - Qun-yan Wu
- Laboratory of Nuclear Energy Chemistry; Institute of High Energy Physics; Chinese Academy of Sciences; 100049 Beijing P. R. China
| | - Yin Tian
- Institute of High Energy Physics; Southwestern Institute of Physics; 610041 Chengdu P. R. China
| | - Kong-qiu Hu
- Laboratory of Nuclear Energy Chemistry; Institute of High Energy Physics; Chinese Academy of Sciences; 100049 Beijing P. R. China
| | - Yun-chen Ge
- Laboratory of Nuclear Energy Chemistry; Institute of High Energy Physics; Chinese Academy of Sciences; 100049 Beijing P. R. China
| | - Ning Liu
- Key Laboratory of Radiation Physics and Technology (Sichuan University); Ministry of Education; Institute of Nuclear Science and Technology; Sichuan University; 610064 Chengdu P. R. China
| | - John K. Gibson
- Chemical Sciences Division; Institute of High Energy Physics; Lawrence Berkeley National Laboratory; 94720 Berkeley California USA
| | - Zhi-fang Chai
- Laboratory of Nuclear Energy Chemistry; Institute of High Energy Physics; Chinese Academy of Sciences; 100049 Beijing P. R. China
| | - Wei-qun Shi
- Laboratory of Nuclear Energy Chemistry; Institute of High Energy Physics; Chinese Academy of Sciences; 100049 Beijing P. R. China
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49
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Alnajjar MA, Bartelmeß J, Hein R, Ashokkumar P, Nilam M, Nau WM, Rurack K, Hennig A. Rational design of boron-dipyrromethene (BODIPY) reporter dyes for cucurbit[7]uril. Beilstein J Org Chem 2018; 14:1961-1971. [PMID: 30202450 PMCID: PMC6122296 DOI: 10.3762/bjoc.14.171] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2018] [Accepted: 07/06/2018] [Indexed: 11/24/2022] Open
Abstract
We introduce herein boron-dipyrromethene (BODIPY) dyes as a new class of fluorophores for the design of reporter dyes for supramolecular host-guest complex formation with cucurbit[7]uril (CB7). The BODIPYs contain a protonatable aniline nitrogen in the meso-position of the BODIPY chromophore, which was functionalized with known binding motifs for CB7. The unprotonated dyes show low fluorescence due to photoinduced electron transfer (PET), whereas the protonated dyes are highly fluorescent. Encapsulation of the binding motif inside CB7 positions the aniline nitrogen at the carbonyl rim of CB7, which affects the pKa value, and leads to a host-induced protonation and thus to a fluorescence increase. The possibility to tune binding affinities and pKa values is demonstrated and it is shown that, in combination with the beneficial photophysical properties of BODIPYs, several new applications of host-dye reporter pairs can be implemented. This includes indicator displacement assays with favourable absorption and emission wavelengths in the visible spectral region, fluorescence correlation spectroscopy, and noncovalent surface functionalization with fluorophores.
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Affiliation(s)
- Mohammad A Alnajjar
- Department of Life Sciences and Chemistry, Jacobs University Bremen, Campus Ring 1, 28759 Bremen, Germany
| | - Jürgen Bartelmeß
- Chemical and Optical Sensing Division, Bundesanstalt für Materialforschung und -prüfung (BAM), Richard-Willstätter-Str. 11, 12489 Berlin, Germany
| | - Robert Hein
- Department of Life Sciences and Chemistry, Jacobs University Bremen, Campus Ring 1, 28759 Bremen, Germany
| | - Pichandi Ashokkumar
- Chemical and Optical Sensing Division, Bundesanstalt für Materialforschung und -prüfung (BAM), Richard-Willstätter-Str. 11, 12489 Berlin, Germany
- Laboratory of Bioimaging and Pathology, UMR 7021 CNRS, Faculty of Pharmacy, University of Strasbourg, 74 Route du Rhin, F-67401 Illkirch-Graffenstaden, France
| | - Mohamed Nilam
- Department of Life Sciences and Chemistry, Jacobs University Bremen, Campus Ring 1, 28759 Bremen, Germany
| | - Werner M Nau
- Department of Life Sciences and Chemistry, Jacobs University Bremen, Campus Ring 1, 28759 Bremen, Germany
| | - Knut Rurack
- Chemical and Optical Sensing Division, Bundesanstalt für Materialforschung und -prüfung (BAM), Richard-Willstätter-Str. 11, 12489 Berlin, Germany
| | - Andreas Hennig
- Department of Life Sciences and Chemistry, Jacobs University Bremen, Campus Ring 1, 28759 Bremen, Germany
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Gupta S, Zhao Y, Varadharajan R, Ramamurthy V. Competitive Binding of Organic Dyes between Cucurbiturils and Octa Acid. ACS OMEGA 2018; 3:5083-5091. [PMID: 31458723 PMCID: PMC6641715 DOI: 10.1021/acsomega.8b00433] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Accepted: 04/26/2018] [Indexed: 06/10/2023]
Abstract
Employing six cationic water-soluble organic dye molecules as probes, we have attempted to qualitatively understand the factors that govern the attraction between such molecules and the anionic water-soluble host, octa acid (OA). Examination of the competitive host-guest complexation between cucurbit[8]uril (CB[8]) and OA using absorption and emission spectroscopy revealed that the dye molecules included within CB[8] could be "pulled out" by OA. However, an order of magnitude higher concentration of OA was required to shift the equilibrium toward OA, suggesting that attraction between the anionic host OA and the cationic dye molecules such as cresyl violet perchlorate and methylene blue is weaker than the hydrophobic and cation-dipolar interaction between these dye molecules and CB[8]. The importance of Coulombic attraction between OA and dye molecules is also revealed by monomer-to-dimer conversion upon addition of OA to an aqueous solution of monomeric dye molecules. Under conditions where the dye-to-OA ratio is high, freely dissolved monomeric dye molecules are attracted to the exterior of OA and aggregate as dimers on the exterior wall of OA. On the other hand, at high ratios of OA to dye molecules, the dye molecules adsorb as monomers on the exterior of OA. Thus, the monomer-to-dimer ratio in aqueous solution can be controlled by adjusting the ratio of dye to OA molecules. The results presented are of value in qualitatively understanding the relative binding properties of ionic guests with ionic hosts. Studies are qualitative in nature, and further detailed quantitative studies planned for the future are likely to provide deeper understanding of the interaction between water-soluble dye molecules, OA, and CB.
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