1
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McGuire K, He S, Gracie J, Bryson C, Zheng D, Clark AW, Koehnke J, France DJ, Nau WM, Lee TC, Peveler WJ. Supramolecular Click Chemistry for Surface Modification of Quantum Dots Mediated by Cucurbit[7]uril. ACS NANO 2023; 17:21585-21594. [PMID: 37922402 PMCID: PMC10655248 DOI: 10.1021/acsnano.3c06601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2023]
Abstract
Cucurbiturils (CBs), barrel-shaped macrocyclic molecules, are capable of self-assembling at the surface of nanomaterials in their native state, via their carbonyl-ringed portals. However, the symmetrical two-portal structure typically leads to aggregated nanomaterials. We demonstrate that fluorescent quantum dot (QD) aggregates linked with CBs can be broken-up, retaining CBs adsorbed at their surface, via inclusion of guests in the CB cavity. Simultaneously, the QD surface is modified by a functional tail on the guest, thus the high affinity host-guest binding (logKa > 9) enables a non-covalent, click-like modification of the nanoparticles in aqueous solution. We achieved excellent modification efficiency in several functional QD conjugates as protein labels. Inclusion of weaker-binding guests (logKa = 4-6) enables subsequent displacement with stronger binders, realising modular switchable surface chemistries. Our general "hook-and-eye" approach to host-guest chemistry at nanomaterial interfaces will lead to divergent routes for nano-architectures with rich functionalities for theranostics and photonics in aqueous systems.
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Affiliation(s)
- Katie McGuire
- School
of Chemistry, Joseph Black Building, University
of Glasgow, Glasgow, G12 8QQ, United
Kingdom
| | - Suhang He
- School
of Science, Constructor University, Campus Ring 1, 28759 Bremen, Germany
| | - Jennifer Gracie
- School
of Chemistry, Joseph Black Building, University
of Glasgow, Glasgow, G12 8QQ, United
Kingdom
| | - Charlotte Bryson
- School
of Chemistry, Joseph Black Building, University
of Glasgow, Glasgow, G12 8QQ, United
Kingdom
| | - Dazhong Zheng
- School
of Chemistry, Joseph Black Building, University
of Glasgow, Glasgow, G12 8QQ, United
Kingdom
| | - Alasdair W. Clark
- James
Watt School of Engineering, Advanced Research Centre, University of Glasgow, Glasgow, G11 6EW, United
Kingdom
| | - Jesko Koehnke
- School
of Chemistry, Joseph Black Building, University
of Glasgow, Glasgow, G12 8QQ, United
Kingdom
- Institut
für Lebensmittelchemie, Leibniz Universität
Hannover, Callinstr 5, 30167 Hannover, Germany
| | - David J. France
- School
of Chemistry, Joseph Black Building, University
of Glasgow, Glasgow, G12 8QQ, United
Kingdom
| | - Werner M. Nau
- School
of Science, Constructor University, Campus Ring 1, 28759 Bremen, Germany
| | - Tung-Chun Lee
- Institute
for Materials Discovery, University College
London, London, WC1H 0AJ, United Kingdom
- Department
of Chemistry, University College London, London, WC1H 0AJ, United Kingdom
| | - William J. Peveler
- School
of Chemistry, Joseph Black Building, University
of Glasgow, Glasgow, G12 8QQ, United
Kingdom
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2
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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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3
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Krämer J, Grimm LM, Zhong C, Hirtz M, Biedermann F. A supramolecular cucurbit[8]uril-based rotaxane chemosensor for the optical tryptophan detection in human serum and urine. Nat Commun 2023; 14:518. [PMID: 36720875 PMCID: PMC9889744 DOI: 10.1038/s41467-023-36057-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Accepted: 01/13/2023] [Indexed: 02/02/2023] Open
Abstract
Sensing small biomolecules in biofluids remains challenging for many optical chemosensors based on supramolecular host-guest interactions due to adverse interplays with salts, proteins, and other biofluid components. Instead of following the established strategy of developing alternative synthetic binders with improved affinities and selectivity, we report a molecular engineering approach that addresses this biofluid challenge. Here we introduce a cucurbit[8]uril-based rotaxane chemosensor feasible for sensing the health-relevant biomarker tryptophan at physiologically relevant concentrations, even in protein- and lipid-containing human blood serum and urine. Moreover, this chemosensor enables emission-based high-throughput screening in a microwell plate format and can be used for label-free enzymatic reaction monitoring and chirality sensing. Printed sensor chips with surface-immobilized rotaxane-microarrays are used for fluorescence microscopy imaging of tryptophan. Our system overcomes the limitations of current supramolecular host-guest chemosensors and will foster future applications of supramolecular sensors for molecular diagnostics.
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Affiliation(s)
- Joana Krämer
- Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Laura M Grimm
- Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Chunting Zhong
- Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz Platz 1, 76344, Eggenstein-Leopoldshafen, Germany.,Karlsruhe Nano Micro Facility (KNMFi), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Michael Hirtz
- Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz Platz 1, 76344, Eggenstein-Leopoldshafen, Germany. .,Karlsruhe Nano Micro Facility (KNMFi), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz Platz 1, 76344, Eggenstein-Leopoldshafen, Germany.
| | - Frank Biedermann
- Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz Platz 1, 76344, Eggenstein-Leopoldshafen, Germany.
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4
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Miskolczy Z, Megyesi M, Biczók L. Role of kinetic stabilization in the inclusion of the pharmaceutically important chelerythrine and nitidine alkaloids in cucurbit[7]uril. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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5
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Hu X, Zhang H, Liu M. A cucurbit[7]uril-based supramolecular fluorescent probe for the detection of metronidazole with high sensitivity and strong anti-interference capacity. JOURNAL OF CHEMICAL RESEARCH 2021. [DOI: 10.1177/17475198211055103] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
We propose a new method for the selective detection of the antibiotic metronidazole (MNZ) using CB[7]-JAT (cucurbit[7]uril = CB[7] and JAT = jatrorrhizine) as a fluorescent probe, which is based on the competitive reaction between MNZ and JAT for the occupancy of the CB[7] cavity. The proposed method gives a good calibration curve in the concentration range of 0.38–60 μM, and the limit of detection for MNZ is 65 ng mL−1 with those obtained by the standard curve method. Moreover, the proposed method was successfully applied for the determination of MNZ in liquid milk. Most importantly, due to the high binding affinity between CB[7] and MNZ, the proposed method shows great anti-interference capacity to accurately detect MNZ in the presence of other antibiotics.
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Affiliation(s)
- Xuemei Hu
- School of Chemistry and Life Science, Advanced Institute of Materials Science, Changchun University of Technology, Changchun, P.R. China
| | - Huaqing Zhang
- School of Chemistry and Life Science, Advanced Institute of Materials Science, Changchun University of Technology, Changchun, P.R. China
| | - Mei Liu
- School of Chemistry and Life Science, Advanced Institute of Materials Science, Changchun University of Technology, Changchun, P.R. China
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6
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Colaço M, Máximo P, Jorge Parola A, Basílio N. Photoresponsive Binding Dynamics in High-Affinity Cucurbit[8]uril-Dithienylethene Host-Guest Complexes. Chemistry 2021; 27:9550-9555. [PMID: 33908661 DOI: 10.1002/chem.202100974] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Indexed: 12/19/2022]
Abstract
The use of external stimuli to control the binding kinetics in supramolecular systems is of critical importance for the development of advanced molecular machines and devices. In this work, a study focused on the kinetics of a water-soluble host-guest system based on cucurbit[8]uril and two dithienylethene (DTE) photoswitches is reported. It is shown that for the DTE guest comprising two anionic sulfonate side arms appended to pyridinium moieties, the formation/dissociation of the pseudorotaxane structures is slowed down by more than 100000-fold with respect to its bipyridinium analogue. The decrease in ingression rate leads to the emergence of a competitive metastable product with the open DTE isomer that has an important influence in the overall binding kinetics. Moreover, the host-guest dissociation kinetics is demonstrated to be approximately 100-fold slower for the closed DTE isomer (t1/2 =107 h vs. t1/2 =1.2 h for the open isomer) allowing control over the dissociation rate with light.
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Affiliation(s)
- Miriam Colaço
- Laboratório Associado para a Química Verde (LAQV), Rede de Química e Tecnologia (REQUIMTE), Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516, Caparica, Portugal
| | - Patrícia Máximo
- Laboratório Associado para a Química Verde (LAQV), Rede de Química e Tecnologia (REQUIMTE), Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516, Caparica, Portugal
| | - A Jorge Parola
- Laboratório Associado para a Química Verde (LAQV), Rede de Química e Tecnologia (REQUIMTE), Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516, Caparica, Portugal
| | - Nuno Basílio
- Laboratório Associado para a Química Verde (LAQV), Rede de Química e Tecnologia (REQUIMTE), Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516, Caparica, Portugal
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7
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Luo D, Guang L, Lin R, Zhang N, Liu M, Lin R, Sun W, Liu J. Chromic Properties of Carboxyphenyl Viologen Induced by Complexation in Cucurbit[7]uril. ChemistrySelect 2021. [DOI: 10.1002/slct.202100218] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Dan Luo
- College of Chemistry and Chemical Engineering Anhui University of Technology Maanshan 243002 China
| | - Long‐Yu Guang
- College of Chemistry and Chemical Engineering Anhui University of Technology Maanshan 243002 China
| | - Rong‐Guang Lin
- College of Life Sciences Fujian Agriculture and Forestry University Fuzhou 350002 China
| | - Ning‐Ning Zhang
- School of Chemistry and Chemical Engineering Liaocheng University Liaocheng 252000 China
| | - Mei‐Chen Liu
- College of Chemistry and Chemical Engineering Anhui University of Technology Maanshan 243002 China
| | - Rui‐Lian Lin
- College of Chemistry and Chemical Engineering Anhui University of Technology Maanshan 243002 China
| | - Wen‐Qi Sun
- College of Chemistry and Chemical Engineering Anhui University of Technology Maanshan 243002 China
| | - Jing‐Xin Liu
- College of Chemistry and Chemical Engineering Anhui University of Technology Maanshan 243002 China
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8
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Zheng Y, Kaifer AE. Kinetics and Thermodynamics of Binding between Zwitterionic Viologen Guests and the Cucurbit[7]uril Host. J Org Chem 2020; 85:10240-10244. [DOI: 10.1021/acs.joc.0c01201] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Yeting Zheng
- Department of Chemistry, University of Miami, Coral Gables, Florida 33124, United States
| | - Angel E. Kaifer
- Department of Chemistry, University of Miami, Coral Gables, Florida 33124, United States
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9
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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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10
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Lin RL, Li R, Shi H, Zhang K, Meng D, Sun WQ, Chen K, Liu JX. Symmetrical-Tetramethyl-Cucurbit[6]uril-Driven Movement of Cucurbit[7]uril Gives Rise to Heterowheel [4]Pseudorotaxanes. J Org Chem 2020; 85:3568-3575. [PMID: 32041407 DOI: 10.1021/acs.joc.9b03283] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Two novel heterowheel [4]pseudorotaxanes consisting of cucurbit[7]uril (Q[7]) and symmetrical-tetramethyl-cucurbit[6]uril (TMeQ[6]) were constructed via the multirecognition mechanism, in which Q[7] can rotate freely around the horizontal axis, while TMeQ[6] cannot. In the construction process, due to strong repulsive forces between carbonyl portals of two neighboring wheels, the dethreading and movement of the wheels along the axle was observed. The dissociation of the [4]pseudorotaxanes was also discussed.
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Affiliation(s)
- Rui-Lian Lin
- College of Chemistry and Chemical Engineering, Anhui University of Technology, Maanshan 243001, China
| | - Ran Li
- Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China
| | - Hao Shi
- College of Chemistry and Chemical Engineering, Anhui University of Technology, Maanshan 243001, China
| | - Kun Zhang
- College of Chemistry and Chemical Engineering, Anhui University of Technology, Maanshan 243001, China
| | - Di Meng
- College of Chemistry and Chemical Engineering, Anhui University of Technology, Maanshan 243001, China
| | - Wen-Qi Sun
- College of Chemistry and Chemical Engineering, Anhui University of Technology, Maanshan 243001, China
| | - Kai Chen
- Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China
| | - Jing-Xin Liu
- College of Chemistry and Chemical Engineering, Anhui University of Technology, Maanshan 243001, China
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11
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Rad N, Danylyuk O, Sashuk V. Reversing Chemoselectivity: Simultaneous Positive and Negative Catalysis by Chemically Equivalent Rims of a Cucurbit[7]uril Host. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201905027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Nazar Rad
- Institute of Physical ChemistryPolish Academy of Sciences Kasprzaka 44/52 01-224 Warsaw Poland
| | - Oksana Danylyuk
- Institute of Physical ChemistryPolish Academy of Sciences Kasprzaka 44/52 01-224 Warsaw Poland
| | - Volodymyr Sashuk
- Institute of Physical ChemistryPolish Academy of Sciences Kasprzaka 44/52 01-224 Warsaw Poland
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12
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Rad N, Danylyuk O, Sashuk V. Reversing Chemoselectivity: Simultaneous Positive and Negative Catalysis by Chemically Equivalent Rims of a Cucurbit[7]uril Host. Angew Chem Int Ed Engl 2019; 58:11340-11343. [PMID: 31206979 DOI: 10.1002/anie.201905027] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Revised: 05/16/2019] [Indexed: 12/18/2022]
Abstract
Enzyme catalysis has always been an inspiration and an unattainable goal for chemists due to features such as high specificity, selectivity, and efficiency. Here, we disclose a feature neither common in enzymes nor ever described for enzyme mimics, but one that could prove crucial for the catalytic performance of the latter, namely the ability to catalyze and inhibit two different reactions at the same time. Remarkably, this can be realized by two identical, spatially resolved catalytic sites. In the future, such a synchronized catalyst action could be used not only for controlling chemoselectivity, as in the present case, but also for regulating other types of chemical reactivity.
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Affiliation(s)
- Nazar Rad
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224, Warsaw, Poland
| | - Oksana Danylyuk
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224, Warsaw, Poland
| | - Volodymyr Sashuk
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224, Warsaw, Poland
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13
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Meng LJ, Tian X, Huang S, Lin RL, Liu XH, Zhu QJ, Tao Z, Liu JX. Solvent- and Heat-Dependent Binding Behaviors of HMeQ[6] with Alkyldiammonium Ions. ChemistrySelect 2018. [DOI: 10.1002/slct.201801062] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Ling-Jian Meng
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province; Guizhou University; Guiyang 550025 China
| | - Xiao Tian
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province; Guizhou University; Guiyang 550025 China
| | - Sai Huang
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province; Guizhou University; Guiyang 550025 China
| | - Rui-Lian Lin
- College of Chemistry and Chemical Engineering; Anhui University of Technology; Maanshan 243002 China
| | - Xin-Hua Liu
- School of Pharmacy; Anhui Medical University, Hefei; 230032,P. R. China
| | - Qian-Jiang Zhu
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province; Guizhou University; Guiyang 550025 China
| | - Zhu Tao
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province; Guizhou University; Guiyang 550025 China
| | - Jing-Xin Liu
- College of Chemistry and Chemical Engineering; Anhui University of Technology; Maanshan 243002 China
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14
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Self-assembled (pseudo)rotaxane and polyrotaxane through host–guest chemistry based on the cucurbituril family. J INCL PHENOM MACRO 2018. [DOI: 10.1007/s10847-018-0828-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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15
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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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16
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Kotturi K, Masson E. Directional Self-Sorting with Cucurbit[8]uril Controlled by Allosteric π-π and Metal-Metal Interactions. Chemistry 2018; 24:8670-8678. [PMID: 29601113 DOI: 10.1002/chem.201800856] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Indexed: 12/14/2022]
Abstract
To maximize Coulombic interactions, cucurbit[8]uril (CB[8]) typically forms ternary complexes that distribute the positive charges of the pair of guests (if any) over both carbonylated portals of the macrocycle. We present here the first exception to this recognition pattern. Platinum(II) acetylides flanked by 4'-substituted terpyridyl ligands (tpy) form 2:1 complexes with CB[8] in an exclusively stacked head-to-head orientation in a water/acetonitrile mixture. The host encapsulates the pair of tpy substituents, and both positive Pt centers sit on top of each other at the same CB[8] rim, leaving the other rim free of any interaction with the guests. This dramatic charge imbalance between the CB[8] rims would be electrostatically penalizing, were it not for allosteric π-π interactions between the stacked tpy ligands, and possible metal-metal interactions between both Pt centers. When both tpy and acetylides are substituted with aryl units, the metal-ligand complexes form 2:2 assemblies with CB[8] in aqueous medium, and the directionality of the assembly (head-to-head or head-to-tail) can be controlled, both kinetically and thermodynamically.
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Affiliation(s)
- Kondalarao Kotturi
- Department of Chemistry and Biochemistry, Ohio University, 181 Clippinger Hall, Athens, Ohio, 45701, USA
| | - Eric Masson
- Department of Chemistry and Biochemistry, Ohio University, 181 Clippinger Hall, Athens, Ohio, 45701, USA
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17
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Affiliation(s)
- Eric Masson
- Department of Chemistry and Biochemistry Ohio University Athens, Ohio 45701 USA
| | - Mersad Raeisi
- Department of Chemistry and Biochemistry Ohio University Athens, Ohio 45701 USA
| | - Kondalarao Kotturi
- Department of Chemistry and Biochemistry Ohio University Athens, Ohio 45701 USA
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18
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Miskolczy Z, Biczók L, Lendvay G. Substituent effect on the dynamics of the inclusion complex formation between protoberberine alkaloids and cucurbit[7]uril. Phys Chem Chem Phys 2018; 20:15986-15994. [DOI: 10.1039/c8cp01845f] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The dynamics and activation parameters of alkaloid entry into and exit from cucurbit[7]uril significantly depend on the substitution pattern.
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Affiliation(s)
- Zsombor Miskolczy
- Institute of Materials and Environmental Chemistry
- Research Centre for Natural Sciences, Hungarian Academy of Sciences
- 1519 Budapest
- Hungary
| | - László Biczók
- Institute of Materials and Environmental Chemistry
- Research Centre for Natural Sciences, Hungarian Academy of Sciences
- 1519 Budapest
- Hungary
| | - György Lendvay
- Institute of Materials and Environmental Chemistry
- Research Centre for Natural Sciences, Hungarian Academy of Sciences
- 1519 Budapest
- Hungary
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19
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20
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Tan J, Liao Z, Tian C, Shao J. Inclusion complexes based α,ω-imidazolium based oligosiloxane (Im-PDMS) and cucurbit[7]uril (CB[7]) in aqueous solution. J INCL PHENOM MACRO 2017. [DOI: 10.1007/s10847-017-0770-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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21
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Gómez-Durán CFA, Liu W, Betancourt-Mendiola MDL, Smith BD. Structural Control of Kinetics for Macrocycle Threading by Fluorescent Squaraine Dye in Water. J Org Chem 2017; 82:8334-8341. [PMID: 28753022 DOI: 10.1021/acs.joc.7b01486] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
While the general concept of steric speed bumps has been demonstrated in rotaxane shuttles and macrocycle threading systems, the sensitivity of speed bump effects has not been evaluated as a function of structural geometry. Values of Ka and kon for macrocycle threading in water are reported for a series of homologous squaraine dyes with different substituents (speed bumps) on the flanking chains and two macrocycles with different cavity sizes. Sensitivity to a steric speed bump effect was found to depend on (a) structural location, being lowest when the speed bump was near the end of a flanking chain, and (b) macrocycle cavity size, which was enhanced when the cavity was constricted. This new insight is broadly applicable to many types of molecular threading systems.
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Affiliation(s)
- César F A Gómez-Durán
- Department of Chemistry and Biochemistry, University of Notre Dame , 236 Nieuwland Science Hall, South Bend, Indiana 46556, United States
| | - Wenqi Liu
- Department of Chemistry and Biochemistry, University of Notre Dame , 236 Nieuwland Science Hall, South Bend, Indiana 46556, United States
| | | | - Bradley D Smith
- Department of Chemistry and Biochemistry, University of Notre Dame , 236 Nieuwland Science Hall, South Bend, Indiana 46556, United States
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22
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Aeschi Y, Drayss-Orth S, Valášek M, Raps F, Häussinger D, Mayor M. Assembly of [2]Rotaxanes in Water. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700640] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Yves Aeschi
- Department of Chemistry; University of Basel; St. Johanns-Ring 19 4056 Basel Switzerland
- Swiss Nanoscience Institute; University of Basel; Klingelbergstrasse 82 4056 Basel Switzerland
| | - Sylvie Drayss-Orth
- Department of Chemistry; University of Basel; St. Johanns-Ring 19 4056 Basel Switzerland
| | - Michal Valášek
- Institute for Nanotechnology (INT); Karlsruhe Institute of Technology (KIT); P. O. Box 3640 76021 Karlsruhe Germany
| | - Felix Raps
- Department of Chemistry; University of Basel; St. Johanns-Ring 19 4056 Basel Switzerland
| | - Daniel Häussinger
- Department of Chemistry; University of Basel; St. Johanns-Ring 19 4056 Basel Switzerland
| | - Marcel Mayor
- Department of Chemistry; University of Basel; St. Johanns-Ring 19 4056 Basel Switzerland
- Swiss Nanoscience Institute; University of Basel; Klingelbergstrasse 82 4056 Basel Switzerland
- Institute for Nanotechnology (INT); Karlsruhe Institute of Technology (KIT); P. O. Box 3640 76021 Karlsruhe Germany
- Lehn Institute of Functional Materials (LIFM); Sun Yat-Sen University; Guangzhou China
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23
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Wu WJ, Wu F, Day AI. Molecular Snuggle and Stretch of a Tetraammonium Chain in the Construction of a Hetero-[4]pseudorotaxane with CyclopentanoQ[6] and Classical Q[7]. J Org Chem 2017; 82:5507-5515. [PMID: 28486806 DOI: 10.1021/acs.joc.6b02813] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A hetero-[4]pseudorotaxane was designed to perform a molecular machine function of contraction and expansion utilizing the binding features of CyP6Q[6] and classical Q[7]. First, the effect on guest binding of equatorial substitution on Q[6]'s was examined by comparing Me4Q[6] and CyP6Q[6] against classical Q[6] using eight guest molecules varying in shape, size, neutrality, or cations. Second, the binding data provided optimal structural features for the design of a tetraammonium ion chain to effect the synthesis of the hetero-[4]pseudorotaxane. Finally, the hetero-[4]pseudorotaxane was constructed, and the order of component placement was examined for function and thermodynamic stability in relation to component order on the molecular axle.
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Affiliation(s)
- Wen-Jing Wu
- Chemistry, School of PEMS, University of New South Wales Canberra, Australian Defence Force Academy , Canberra, Australian Capital Territory 2600, Australia
| | - Feng Wu
- Chemistry, School of PEMS, University of New South Wales Canberra, Australian Defence Force Academy , Canberra, Australian Capital Territory 2600, Australia
| | - Anthony I Day
- Chemistry, School of PEMS, University of New South Wales Canberra, Australian Defence Force Academy , Canberra, Australian Capital Territory 2600, Australia
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24
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Martín VI, Angulo M, López-Cornejo P, López-López M, Marchena MJ, Moyá ML. Stoppering/unstoppering of a rotaxane formed between an N-hetorycle ligand containing surfactant: β-cyclodextrin pseudorotaxane and pentacyanoferrate(II) ions. J Colloid Interface Sci 2017; 497:343-349. [PMID: 28288380 DOI: 10.1016/j.jcis.2017.03.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Revised: 02/20/2017] [Accepted: 03/02/2017] [Indexed: 01/05/2023]
Abstract
The assembly of a surfactant-based rotaxane by adding the labile aquopentacyanoferrate(II) ion to the previously formed pseudorotaxane between the surfactant 11-(isonicotinoyloxy)-N,N,N-triethyl-1-undecanaminium bromide and β-cyclodextrin was investigated by 1H NMR and kinetic measurements. NMR spectroscopy has showed that the rotaxane can be formed through two different mechanisms. The rotaxane can be unstoppered by using the pyridine ligand substitution reaction by the high-field cyanide ligand. In this work a new method is developed for the preparation of several new surfactant-based rotaxanes by changing the hydrophilic and hydrophobic regions of the surfactants and the nature of the macrocycle.
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Affiliation(s)
- Victoria I Martín
- Department of Physical Chemistry, University of Seville, C/ Profesor García González 1, 41012 Seville, Spain
| | - Manuel Angulo
- NMR Service, University of Seville, Apartado 1203, E-41071 Seville, Spain
| | - Pilar López-Cornejo
- Department of Physical Chemistry, University of Seville, C/ Profesor García González 1, 41012 Seville, Spain
| | - Manuel López-López
- Department of Chemical Engineering, Physical Chemistry and Material Science, Faculty of Experimental Sciences, Campus El Carmen, Avda. de las Fuerzas Armadas s/n, 21071 Huelva, Spain
| | - María José Marchena
- Department of Physical Chemistry, University of Seville, C/ Profesor García González 1, 41012 Seville, Spain
| | - María Luisa Moyá
- Department of Physical Chemistry, University of Seville, C/ Profesor García González 1, 41012 Seville, Spain.
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25
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Miskolczy Z, Biczók L, Jablonkai I. Kinetics of the reversible inclusion of flavopereirine in cucurbit[7]uril. Phys Chem Chem Phys 2017; 19:766-773. [DOI: 10.1039/c6cp07553c] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The temperature dependence of the formation and dissociation kinetics of the flavopereirine–cucurbit[7]uril complex is revealed.
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Affiliation(s)
- Zsombor Miskolczy
- Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences
- Hungarian Academy of Sciences
- P.O. Box 286
- 1519 Budapest
- Hungary
| | - László Biczók
- Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences
- Hungarian Academy of Sciences
- P.O. Box 286
- 1519 Budapest
- Hungary
| | - István Jablonkai
- Institute of Organic Chemistry
- Research Centre for Natural Sciences
- Hungarian Academy of Sciences
- P.O. Box 286
- 1519 Budapest
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26
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Ustrnul L, Babiak M, Kulhanek P, Sindelar V. A Cucurbituril Derivative That Exhibits Cation-Modulated Self-Assembly. J Org Chem 2016; 81:6075-80. [DOI: 10.1021/acs.joc.6b01288] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Lukas Ustrnul
- Department of Chemistry and ‡RECETOX, Masaryk University, Kamenice
5, 625 00 Brno, Czech Republic
| | - Michal Babiak
- Department of Chemistry and ‡RECETOX, Masaryk University, Kamenice
5, 625 00 Brno, Czech Republic
| | - Petr Kulhanek
- Department of Chemistry and ‡RECETOX, Masaryk University, Kamenice
5, 625 00 Brno, Czech Republic
| | - Vladimir Sindelar
- Department of Chemistry and ‡RECETOX, Masaryk University, Kamenice
5, 625 00 Brno, Czech Republic
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27
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Liu W, Peck EM, Hendzel KD, Smith BD. Sensitive Structural Control of Macrocycle Threading by a Fluorescent Squaraine Dye Flanked by Polymer Chains. Org Lett 2015; 17:5268-71. [PMID: 26452041 PMCID: PMC4636930 DOI: 10.1021/acs.orglett.5b02633] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A macrocyclic tetralactam is threaded by a complementary squaraine dye that is flanked by two polyethylene glycol chains to produce a pseudorotaxane complex with favorable near-infrared fluorescence properties. The association thermodynamics and kinetics were measured for a homologous series of squaraines with different N-alkyl substituents at both ends of the dye. The results show that subtle changes in substituent steric size have profound effects on threading kinetics without greatly altering the very high association constant.
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Affiliation(s)
- Wenqi Liu
- Department of Chemistry and Biochemistry, 236 Nieuwland Science Hall, University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - Evan M. Peck
- Department of Chemistry and Biochemistry, 236 Nieuwland Science Hall, University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - Kevin D. Hendzel
- Department of Chemistry and Biochemistry, 236 Nieuwland Science Hall, University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - Bradley D. Smith
- Department of Chemistry and Biochemistry, 236 Nieuwland Science Hall, University of Notre Dame, Notre Dame, Indiana 46556, USA
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28
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Diniz AM, Basílio N, Cruz H, Pina F, Parola AJ. Spatiotemporal control over the co-conformational switching in pH-responsive flavylium-based multistate pseudorotaxanes. Faraday Discuss 2015; 185:361-79. [PMID: 26395804 DOI: 10.1039/c5fd00078e] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
A multistate molecular dyad containing flavylium and viologen units was synthesized and the pH dependent thermodynamics of the network completely characterized by a variety of spectroscopic techniques such as NMR, UV-vis and stopped-flow. The flavylium cation is only stable at acidic pH values. Above pH ≈ 5 the hydration of the flavylium leads to the formation of the hemiketal followed by ring-opening tautomerization to give the cis-chalcone. Finally, this last species isomerizes to give the trans-chalcone. For the present system only the flavylium cation and the trans-chalcone species could be detected as being thermodynamically stable. The hemiketal and the cis-chalcone are kinetic intermediates with negligible concentrations at the equilibrium. All stable species of the network were found to form 1 : 1 and 2 : 1 host : guest complexes with cucurbit[7]uril (CB7) with association constants in the ranges 10(5)-10(8) M(-1) and 10(3)-10(4) M(-1), respectively. The 1 : 1 complexes were particularly interesting to devise pH responsive bistable pseudorotaxanes: at basic pH values (≈12) the flavylium cation interconverts into the deprotonated trans-chalcone in a few minutes and under these conditions the CB7 wheel was found to be located around the viologen unit. A decrease in pH to values around 1 regenerates the flavylium cation in seconds and the macrocycle is translocated to the middle of the axle. On the other hand, if the pH is decreased to 6, the deprotonated trans-chalcone is neutralized to give a metastable species that evolves to the thermodynamically stable flavylium cation in ca. 20 hours. By taking advantage of the pH-dependent kinetics of the trans-chalcone/flavylium interconversion, spatiotemporal control of the molecular organization in pseudorotaxane systems can be achieved.
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Affiliation(s)
- Ana Marta Diniz
- Laboratório Associado para a Química Verde (LAQV), REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Monte de Caparica, Portugal. and Departamento de Química, Escola Superior de Tecnologia da Saúde de Lisboa - Instituto Politécnico de Lisboa, Lisboa, Portugal
| | - Nuno Basílio
- Laboratório Associado para a Química Verde (LAQV), REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Monte de Caparica, Portugal.
| | - Hugo Cruz
- Laboratório Associado para a Química Verde (LAQV), REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Monte de Caparica, Portugal.
| | - Fernando Pina
- Laboratório Associado para a Química Verde (LAQV), REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Monte de Caparica, Portugal.
| | - A Jorge Parola
- Laboratório Associado para a Química Verde (LAQV), REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Monte de Caparica, Portugal.
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