201
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Baheti A, Dobrovetsky R, Vigalok A. Fluorophore-Appendant 5,5'-Bicalixarene Scaffolds for Host-Guest Sensing of Nitric Oxide. Org Lett 2020; 22:9706-9711. [PMID: 33285065 PMCID: PMC7884005 DOI: 10.1021/acs.orglett.0c03764] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
![]()
Conjugated 5,5′-Bicalixarene
scaffolds having fluorophores
at the chain termini have been prepared and tested in the supramolecular
detection of nitric oxide. Scaffolds bearing electron-rich fluorophores
demonstrated a stronger turn-off response to the presence of NO than
the fluorophore-free analogue in both organic and aqueous media, while
no fluorescence quenching happened when the electron-deficient fluorophores
were employed. Unprecedented ratiometric supramolecular sensing was
observed when fluorophores of the opposite electronic demands were
placed at the scaffold’s termini.
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Affiliation(s)
- Abhishek Baheti
- School of Chemistry, Tel Aviv University, Tel Aviv 69978, Israel
| | | | - Arkadi Vigalok
- School of Chemistry, Tel Aviv University, Tel Aviv 69978, Israel
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202
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Rama T, Blanco-Gómez A, Peinador C, García MD. Self-Assembly of Pseudo[1]rotaxanes by Palladium(II)/Platinum(II)-Directed Integrative Social Self-Sorting: Is the Metal Required? Chempluschem 2020; 85:2672-2678. [PMID: 33326700 DOI: 10.1002/cplu.202000739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 12/02/2020] [Indexed: 11/07/2022]
Abstract
New results are presented on the multicomponent supramolecular synthesis of pseudo[1]rotaxanes, achieved by designing pairs of structurally matching N-monoalkyl-4,4'-bipyridinium/2,7-diazapyrenium-based ligands having complementary π-donor/acceptor features, and intended to self-assemble into the targeted supramolecules by following integrative self-sorting processes. In all the studied cases, it was found that the envisioned species, characterized by NMR spectroscopy and MS spectrometry, arise as the main products of the self-assembly in aqueous media by using palladium(II)/platinum(II) metal centers as the guiding force. Crucially, we have also found that by improving the π-donor/acceptor properties of the matching pairs of ligands (L4 and L5 ), the integrative self-sorting processes prevail even in the absence of metallic ions to afford the heterodimeric species with an association constant being 756±43 M-1 .
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Affiliation(s)
- Tamara Rama
- Departamento de Química and Centro de Investigacións Científicas Avanzadas (CICA), Facultade de Ciencias, Universidade da Coruña, A Coruña, 15071, Spain
| | - Arturo Blanco-Gómez
- Departamento de Química and Centro de Investigacións Científicas Avanzadas (CICA), Facultade de Ciencias, Universidade da Coruña, A Coruña, 15071, Spain
| | - Carlos Peinador
- Departamento de Química and Centro de Investigacións Científicas Avanzadas (CICA), Facultade de Ciencias, Universidade da Coruña, A Coruña, 15071, Spain
| | - Marcos D García
- Departamento de Química and Centro de Investigacións Científicas Avanzadas (CICA), Facultade de Ciencias, Universidade da Coruña, A Coruña, 15071, Spain
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203
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Aliaga ME, Pavez P, Quintero G, Droguett K, Cañete Á, Santos JG. Cucurbit[7]uril limits the binding of coumarin bearing alkyl-acetoacetate with mercury and stimulates the desulphurisation reaction of its sulphur analog. Supramol Chem 2020. [DOI: 10.1080/10610278.2020.1856845] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Margarita E. Aliaga
- Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Paulina Pavez
- Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Guillermo Quintero
- Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Kevin Droguett
- Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Álvaro Cañete
- Instituto de Ciencias Químicas Aplicadas, Universidad Autónoma de Chile, Santiago, Chile
| | - José G. Santos
- Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Santiago, Chile
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204
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Fluorescence Enhancement by Calixarene Supramolecular Aggregate. Molecules 2020; 25:molecules25245912. [PMID: 33327371 PMCID: PMC7764848 DOI: 10.3390/molecules25245912] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 12/02/2020] [Accepted: 12/07/2020] [Indexed: 12/02/2022] Open
Abstract
We herein constructed supramolecular assemblies from guanidinocalixarenes and sulfonatocalixarenes by exploiting multiple salt bridge interactions. They encapsulate six different kinds of fluorescent dyes (both cationic and anionic), leading to a fluorescence enhancement that could not be achieved by either single calixarene. As such, this study advances the research on high-performance fluorophores.
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205
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Atabekyan LS, Chibisov AK. Phototransformations of Neutral Red dye in aqueous solutions in the presence of cucurbit[7]uril. Russ Chem Bull 2020. [DOI: 10.1007/s11172-020-3006-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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206
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Melnikova DL, Badrieva ZF, Kostin MA, Maller C, Stas M, Buczek A, Broda MA, Kupka T, Kelterer AM, Tolstoy PM, Skirda VD. On Complex Formation between 5-Fluorouracil and β-Cyclodextrin in Solution and in the Solid State: IR Markers and Detection of Short-Lived Complexes by Diffusion NMR. Molecules 2020; 25:E5706. [PMID: 33287255 PMCID: PMC7731325 DOI: 10.3390/molecules25235706] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Revised: 11/27/2020] [Accepted: 11/30/2020] [Indexed: 11/16/2022] Open
Abstract
In this work, the nuclear magnetic resonance (NMR) and IR spectroscopic markers of the complexation between 5-fluorouracil (5-FU) and β-cyclodextrin (β-CD) in solid state and in aqueous solution are investigated. In the attenuated total reflectance(ATR) spectra of 5-FU/β-CD products obtained by physical mixing, kneading and co-precipitation, we have identified the two most promising marker bands that could be used to detect complex formations: the C=O and C-F stretching bands of 5-FU that experience a blue shift by ca. 8 and 2 cm-1 upon complexation. The aqueous solutions were studied by NMR spectroscopy. As routine NMR spectra did not show any signs of complexation, we have analyzed the diffusion attenuation of spin-echo signals and the dependence of the population factor of slowly diffusing components on the diffusion time (diffusion NMR of pulsed-field gradient (PFG) NMR). The analysis has revealed that, at each moment, ~60% of 5-FU molecules form a complex with β-CD and its lifetime is ca. 13.5 ms. It is likely to be an inclusion complex, judging from the independence of the diffusion coefficient of β-CD on complexation. The obtained results could be important for future attempts of finding better methods of targeted anticancer drug delivery.
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Affiliation(s)
- Daria L. Melnikova
- Institute of Physics, Kazan Federal University, Kremlevskaya 16a, 420111 Kazan, Russia; (D.L.M.); (Z.F.B.)
| | - Zilya F. Badrieva
- Institute of Physics, Kazan Federal University, Kremlevskaya 16a, 420111 Kazan, Russia; (D.L.M.); (Z.F.B.)
| | - Mikhail A. Kostin
- Institute of Chemistry, St. Petersburg State University, Universitetskiy pr. 26, 198504 St. Petersburg, Russia;
| | - Corina Maller
- Institute of Physical and Theoretical Chemistry, Graz University of Technology, NAWI Graz, Stremayrgasse 9, 8010 Graz, Austria; (C.M.); (A.-M.K.)
| | - Monika Stas
- Department of Chemistry, Opole University, Oleska Street 48, 45-052 Opole, Poland; (M.S.); (A.B.); (M.A.B.)
| | - Aneta Buczek
- Department of Chemistry, Opole University, Oleska Street 48, 45-052 Opole, Poland; (M.S.); (A.B.); (M.A.B.)
| | - Malgorzata A. Broda
- Department of Chemistry, Opole University, Oleska Street 48, 45-052 Opole, Poland; (M.S.); (A.B.); (M.A.B.)
| | - Teobald Kupka
- Department of Chemistry, Opole University, Oleska Street 48, 45-052 Opole, Poland; (M.S.); (A.B.); (M.A.B.)
| | - Anne-Marie Kelterer
- Institute of Physical and Theoretical Chemistry, Graz University of Technology, NAWI Graz, Stremayrgasse 9, 8010 Graz, Austria; (C.M.); (A.-M.K.)
| | - Peter M. Tolstoy
- Institute of Chemistry, St. Petersburg State University, Universitetskiy pr. 26, 198504 St. Petersburg, Russia;
| | - Vladimir D. Skirda
- Institute of Physics, Kazan Federal University, Kremlevskaya 16a, 420111 Kazan, Russia; (D.L.M.); (Z.F.B.)
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207
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Jiang C, Song Z, Yu L, Ye S, He H. Fluorescent probes based on macrocyclic hosts: Construction, mechanism and analytical applications. Trends Analyt Chem 2020. [DOI: 10.1016/j.trac.2020.116086] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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208
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Thorave RG, Lande DN, Shinde UV, Malkhede DD, Gejji SP. Enlightening binding behaviour of sulfonatocalix[4]arene receptor with 2-acetoxybenzoic acid through the lens of experiments and theory. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.114417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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209
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Kang R, Talamini L, D'Este E, Estevão BM, De Cola L, Klopper W, Biedermann F. Discovery of a size-record breaking green-emissive fluorophore: small, smaller, HINA. Chem Sci 2020; 12:1392-1397. [PMID: 34163902 PMCID: PMC8179180 DOI: 10.1039/d0sc05557c] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Astonishingly, 3-hydroxyisonicotinealdehyde (HINA) is despite its small size a green-emitting push–pull fluorophore in water (QY of 15%) and shows ratiometric emission response to biological relevant pH differences (pKa2 ∼ 7.1). Moreover, HINA is the first small-molecule fluorophore reported that possesses three distinctly emissive protonation states. This fluorophore can be used in combination with metal complexes for fluorescent-based cysteine detection in aqueous media, and is readily taken up by cells. The theoretical description of HINA's photophysics remains challenging, even when computing Franck–Condon profiles via coupled-cluster calculations, making HINA an interesting model for future method development. Astonishingly, 3-hydroxyisonicotinealdehyde (HINA) is despite its small size a green-emitting push–pull fluorophore in water (QY of 15%) and shows ratiometric emission response to biological relevant pH differences (pKa2 ∼ 7.1).![]()
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Affiliation(s)
- Rui Kang
- Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT) Hermann-von-Helmholtz Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Laura Talamini
- Institut de Science et d'Ingénierie Supramoléculaires (ISIS), Université de Strasbourg, CNRS 8Rue Gaspard Monge 67083 Strasbourg France
| | - Elisa D'Este
- Optical Microscopy Facility, Max Plank Institute for Medical Research Jahnstraße 29 D-69120 Heidelberg Germany
| | - Bianca Martins Estevão
- Institut de Science et d'Ingénierie Supramoléculaires (ISIS), Université de Strasbourg, CNRS 8Rue Gaspard Monge 67083 Strasbourg France
| | - Luisa De Cola
- Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT) Hermann-von-Helmholtz Platz 1 76344 Eggenstein-Leopoldshafen Germany .,Institut de Science et d'Ingénierie Supramoléculaires (ISIS), Université de Strasbourg, CNRS 8Rue Gaspard Monge 67083 Strasbourg France
| | - Wim Klopper
- Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT) Hermann-von-Helmholtz Platz 1 76344 Eggenstein-Leopoldshafen Germany .,Institute of Physical Chemistry (IPC), Karlsruhe Institute of Technology (KIT) Fritz-Haber-Weg 6 76131 Karlsruhe 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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210
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Therrien B. Unmasking Arene Ruthenium Building Blocks. CHEM REC 2020; 21:460-468. [PMID: 33215871 DOI: 10.1002/tcr.202000128] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 10/30/2020] [Accepted: 10/30/2020] [Indexed: 11/11/2022]
Abstract
We have, like many others, contributed to the development and to the popularity of arene ruthenium assemblies. From early on, our research was driven by applications, mainly biological (therapeutic, drug delivery, DNA interactions, photodynamic therapy, imaging). For nearly 15 years, we have focused on the use of arene ruthenium building block as a tool to construct added-value objects. In this account, we want to give the basic reasons behind our choice, and uncover our most successful examples, with an emphasis on the foreseen applications.
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Affiliation(s)
- Bruno Therrien
- Institute of Chemistry, University of Neuchatel, Avenue de Bellevaux 51, CH 2000, Neuchatel, Switzerland
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211
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Maillard J, Klehs K, Rumble C, Vauthey E, Heilemann M, Fürstenberg A. Universal quenching of common fluorescent probes by water and alcohols. Chem Sci 2020; 12:1352-1362. [PMID: 34163898 PMCID: PMC8179231 DOI: 10.1039/d0sc05431c] [Citation(s) in RCA: 77] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Accepted: 11/18/2020] [Indexed: 12/13/2022] Open
Abstract
Although biological imaging is mostly performed in aqueous media, it is hardly ever considered that water acts as a classic fluorescence quencher for organic fluorophores. By investigating the fluorescence properties of 42 common organic fluorophores recommended for biological labelling, we demonstrate that H2O reduces their fluorescence quantum yield and lifetime by up to threefold and uncover the underlying fluorescence quenching mechanism. We show that the quenching efficiency is significantly larger for red-emitting probes and follows an energy gap law. The fluorescence quenching finds its origin in high-energy vibrations of the solvent (OH groups), as methanol and other linear alcohols are also found to quench the emission, whereas it is restored in deuterated solvents. Our observations are consistent with a mechanism by which the electronic excitation of the fluorophore is resonantly transferred to overtones and combination transitions of high-frequency vibrational stretching modes of the solvent through space and not through hydrogen bonds. Insight into this solvent-assisted quenching mechanism opens the door to the rational design of brighter fluorescent probes by offering a justification for protecting organic fluorophores from the solvent via encapsulation.
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Affiliation(s)
- Jimmy Maillard
- Department of Physical Chemistry, University of Geneva 1211 Geneva Switzerland
- Department of Inorganic and Analytical Chemistry, University of Geneva 1211 Geneva Switzerland
| | - Kathrin Klehs
- Institute for Physical and Theoretical Chemistry, Goethe University Frankfurt 60438 Frankfurt am Main Germany
| | - Christopher Rumble
- Department of Physical Chemistry, University of Geneva 1211 Geneva Switzerland
| | - Eric Vauthey
- Department of Physical Chemistry, University of Geneva 1211 Geneva Switzerland
| | - Mike Heilemann
- Institute for Physical and Theoretical Chemistry, Goethe University Frankfurt 60438 Frankfurt am Main Germany
| | - Alexandre Fürstenberg
- Department of Physical Chemistry, University of Geneva 1211 Geneva Switzerland
- Department of Inorganic and Analytical Chemistry, University of Geneva 1211 Geneva Switzerland
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212
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Zhao YY, Li H, Ge QM, Cong H, Liu M, Tao Z, Zhao JL. A chemo-sensor constructed by nanohybrid of multifarene[3,3] and rGO for serotonin hydrochloride with dual response in both fluorescence and voltammetry. Microchem J 2020. [DOI: 10.1016/j.microc.2020.105145] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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213
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Baranowska K, Mońka M, Kowalczyk A, Szpakowska N, Kaczyński Z, Bojarski P, Józefowicz M. Spectroscopic studies of the excited-state intramolecular proton and electron transfer processes of methyl benzoate derivatives in cucurbit[7]uril nanocage. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113921] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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214
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Chandra F, Dutta T, Koner AL. Supramolecular Encapsulation of a Neurotransmitter Serotonin by Cucurbit[7]uril. Front Chem 2020; 8:582757. [PMID: 33195072 PMCID: PMC7645158 DOI: 10.3389/fchem.2020.582757] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Accepted: 09/16/2020] [Indexed: 12/22/2022] Open
Abstract
pH-dependent host-guest complexation of a monoamine neurotransmitter, Serotonin, with cucurbit[7]uril has been thoroughly investigated. The binding phenomena were explored using steady-state and time-resolved fluorescence spectroscopy at different pH values. At lower pH, i.e., protonated Serotonin, the binding affinity with cucurbit[7]uril was significantly higher compared to higher pH. Furthermore, detailed NMR titration experiments depicted the solution structure of the host-guest complex through the complexation induced chemical shift values. A competitive binding assay with cesium ions at pD 2.8 was subsequently performed for the further manifestation of the binding. Finally, the molecular docking studies provided well-documented proof of the 1:1 inclusion complex and the geometry of the complex. We believe that understanding from such studies can be important for pH-controlled delivery of serotonin for biological applications.
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Affiliation(s)
- Falguni Chandra
- Bionanotechnology Laboratory, Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal, India
| | - Tanoy Dutta
- Bionanotechnology Laboratory, Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal, India
| | - Apurba L Koner
- Bionanotechnology Laboratory, Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal, India
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215
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Xu W, Feng H, Zhao W, Huang C, Redshaw C, Tao Z, Xiao X. Amino acid recognition by a fluorescent chemosensor based on cucurbit[8]uril and acridine hydrochloride. Anal Chim Acta 2020; 1135:142-149. [PMID: 33070851 DOI: 10.1016/j.aca.2020.09.028] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2020] [Revised: 08/26/2020] [Accepted: 09/13/2020] [Indexed: 01/16/2023]
Abstract
A new fluorescent chemosensor comprised of cucurbit[8]uril (Q[8]) and acridine hydrochloride (AC) has been designed and utilized for the recognition of amino acids. The AC was encapsulated by the Q[8] cavity and formed a 1:2 host-guest inclusion complex both in solution (aqueous) and in the solid-state. Whilst free AC is known to be strongly fluorescent, this strong fluorescence was quenched in the inclusion complex Q [8]-AC. This non-fluorescent complex Q[8]-AC was capable of serving as a fluorescence "off-on" probe, and was able to recognize either L-Phe or L-Trp via the competitive interaction between L-Phe or L-Trp. Moreover, the pH responsive nature of the probe allowed for the detection of basic amino acids, namely L-Arg, L-His, or L-Lys). As a result, a fluorescence method for the detection of five amino acids using a single system has been developed.
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Affiliation(s)
- Weitao Xu
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang, 550025, China
| | - Huaming Feng
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang, 550025, China
| | - Weiwei Zhao
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang, 550025, China
| | - Chunhua Huang
- National Research Center for Geoanalysis, China Geological Survey, Beijing, 100037, China
| | - Carl Redshaw
- Department of Chemistry and Biochemistry, University of Hull, Hull, HU6 7RX, UK
| | - Zhu Tao
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang, 550025, China
| | - Xin Xiao
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang, 550025, China.
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216
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Hu C, Grimm L, Prabodh A, Baksi A, Siennicka A, Levkin PA, Kappes MM, Biedermann F. Covalent cucurbit[7]uril-dye conjugates for sensing in aqueous saline media and biofluids. Chem Sci 2020; 11:11142-11153. [PMID: 34094355 PMCID: PMC8162441 DOI: 10.1039/d0sc03079a] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Accepted: 09/16/2020] [Indexed: 12/17/2022] Open
Abstract
Non-covalent chemosensing ensembles of cucurbit[n]urils (CBn) have been widely used in proof-of-concept sensing applications, but they are prone to disintegrate in saline media, e.g. biological fluids. We show here that covalent cucurbit[7]uril-indicator dye conjugates are buffer- (10× PBS buffer) and saline-stable (up to 1.4 M NaCl) and allow for selective sensing of Parkinson's drug amantadine in human urine and saliva, where the analogous non-covalent CB7⊃dye complex is dysfunctional. The in-depth analysis of the covalent host-dye conjugates in the gas-phase, and deionized versus saline aqueous media revealed interesting structural, thermodynamic and kinetic effects that are of general interest for the design of CBn-based supramolecular chemosensors and systems. This work also introduces a novel high-affinity indicator dye for CB7 through which fundamental limitations of indicator displacement assays (IDA) were exposed, namely an impractical slow equilibration time. Unlike non-covalent CBn⊃dye reporter pairs, the conjugate chemosensors can also operate through a SN2-type guest-dye exchange mechanism, which shortens assay times and opens new avenues for tailoring analyte-selectivity.
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Affiliation(s)
- Changming Hu
- Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT) Hermann-von-Helmholtz Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Laura Grimm
- Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT) Hermann-von-Helmholtz Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Amrutha Prabodh
- Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT) Hermann-von-Helmholtz Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Ananya Baksi
- Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT) Hermann-von-Helmholtz Platz 1 76344 Eggenstein-Leopoldshafen Germany
- Institute of Physical Chemistry (IPC), Karlsruhe Institute of Technology (KIT) Fritz-Haber-Weg 6 76131 Karlsruhe Germany
| | - Alicja Siennicka
- Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT) Hermann-von-Helmholtz Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Pavel A Levkin
- Institute of Chemical and Biological Systems - Functional Molecular Systems (IBCS-FMS), Karlsruhe Institute of Technology (KIT) Hermann-von-Helmholtz Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Manfred M Kappes
- Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT) Hermann-von-Helmholtz Platz 1 76344 Eggenstein-Leopoldshafen Germany
- Institute of Physical Chemistry (IPC), Karlsruhe Institute of Technology (KIT) Fritz-Haber-Weg 6 76131 Karlsruhe 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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217
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Hua B, Zhang C, Zhou W, Shao L, Wang Z, Wang L, Zhu H, Huang F. Pillar[5]arene-Based Solid-State Supramolecular Polymers with Suppressed Aggregation-Caused Quenching Effects and Two-Photon Excited Emission. J Am Chem Soc 2020; 142:16557-16561. [PMID: 32916045 DOI: 10.1021/jacs.0c08751] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Herein we develop a new pillar[5]arene-mediated supramolecular polymerization strategy to control the assembly of dyes 4,7-di-2-thienyl-2,1,3-benzothiadiazole and 4,7-di-2-thienyl-2,1,3-benzoselenadiazole in the solid state. The resulting supramolecular polymeric structures drive the dye aggregates in the solid state from parallel alignments to highly ordered "head-to-tail" structures, which effectively suppresses excimer formation and thus aggregation-caused quenching effects and enhances the solid-state emission efficiency by almost 1 order of magnitude. This, together with two-photon excited emission, endows these solid-state polymers with exciting potential in optoelectronic, photonic, and bioimaging applications.
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Affiliation(s)
- Bin Hua
- State Key Laboratory of Chemical Engineering, Center for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
| | - Chi Zhang
- State Key Laboratory of Modern Optical Instrumentation, Center for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
| | - Wei Zhou
- State Key Laboratory of Modern Optical Instrumentation, Center for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
| | - Li Shao
- State Key Laboratory of Chemical Engineering, Center for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
| | - Zedong Wang
- Center for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
| | - Linjun Wang
- Center for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
| | - Haiming Zhu
- State Key Laboratory of Modern Optical Instrumentation, Center for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou 310027, 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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218
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Multi-component interaction between bisstyryl dyes and cucurbit[7]uril. J INCL PHENOM MACRO 2020. [DOI: 10.1007/s10847-020-01025-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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219
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Hadar M, Kaizerman-Kane D, Zafrani Y, Cohen Y. Temperature-Dependent and pH-Responsive Pillar[5]arene-Based Complexes and Hydrogen-Bond-Based Supramolecular Pentagonal Boxes in Water. Chemistry 2020; 26:11250-11255. [PMID: 32259332 DOI: 10.1002/chem.202000972] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Indexed: 01/02/2023]
Abstract
Supramolecular systems in water are of paramount importance and those based on hydrogen bonds are both intriguing and scarce. Here, after studying the peculiar host-guest complexes formed between per-dimethylamino-pillar[5]arene (1) and the bis-sulfonates 2 a-c, we describe the formation of the first hydrogen-bond-based supramolecular pentagonal boxes (SPBs), which are stable in water. These pH-responsive SPBs are constructed from 1 as a body, benzene polycarboxylic acids 3 a,b as lid compounds, and 2 a-c as guests. We demonstrate that encapsulation of 2 a-c in pillar[5]arene 1 and in the highly stable water-soluble SPBs, that is, 1(3 a)2 and 1(3 b)2 , is both temperature and pH dependent and, quite interestingly, depends, on the nature of the lid compounds used for capping the boxes even at high pH. We also highlight the difference in the 1 H NMR characteristics of 2 b and 2 c in the cavity of 1 and the SPBs.
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Affiliation(s)
- Maya Hadar
- School of Chemistry, Sackler Faculty of Exact Sciences, Tel Aviv University, Ramat Aviv, 69978, Tel Aviv, Israel
| | - Dana Kaizerman-Kane
- School of Chemistry, Sackler Faculty of Exact Sciences, Tel Aviv University, Ramat Aviv, 69978, Tel Aviv, Israel
| | - Yossi Zafrani
- Department of Organic Chemistry, Israel Institute for Biological Research, Ness-Ziona, 74000, Israel
| | - Yoram Cohen
- School of Chemistry, Sackler Faculty of Exact Sciences, Tel Aviv University, Ramat Aviv, 69978, Tel Aviv, Israel
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220
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Sayed M, Balayan J, Singh PK, Pal H. Modulation of excited-state photodynamics of ESIPT probe 1′-hydroxy-2′-acetonaphthone (HAN) on interaction with bovine serum albumin. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2020.112651] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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221
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Ashok Phadte A, Chattopadhyay A, Banerjee S, Singh Sisodiya D, Raghava T. Synthesis of Green Emitting Multi‐substituted Dibenzodioxins and Related Heteroacenes and Computational Investigation of Substituent Effects on Emission Spectra. ChemistrySelect 2020. [DOI: 10.1002/slct.202001999] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Apeksha Ashok Phadte
- Department of Chemistry BITS Pilani KK Birla Goa Campus NH 17B, Bypass Road Zuarinagar, Goa 403726 India
| | - Anjan Chattopadhyay
- Department of Chemistry BITS Pilani KK Birla Goa Campus NH 17B, Bypass Road Zuarinagar, Goa 403726 India
| | - Subhadeep Banerjee
- Department of Chemistry BITS Pilani KK Birla Goa Campus NH 17B, Bypass Road Zuarinagar, Goa 403726 India
| | - Dilawar Singh Sisodiya
- Department of Chemistry BITS Pilani KK Birla Goa Campus NH 17B, Bypass Road Zuarinagar, Goa 403726 India
| | - Tanya Raghava
- Department of Chemistry BITS Pilani KK Birla Goa Campus NH 17B, Bypass Road Zuarinagar, Goa 403726 India
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222
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Feng HT, Li Y, Duan X, Wang X, Qi C, Lam JWY, Ding D, Tang BZ. Substitution Activated Precise Phototheranostics through Supramolecular Assembly of AIEgen and Calixarene. J Am Chem Soc 2020; 142:15966-15974. [DOI: 10.1021/jacs.0c06872] [Citation(s) in RCA: 60] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Hai-Tao Feng
- AIE Research Center, Shaanxi Key Laboratory of Phytochemistry, College of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji, Shaanxi 721013, China
| | - Yuanyuan Li
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration & Reconstruction, Institute for Advanced Study, Department of Chemical and Biomedical Engineering, Division of Life Science, State Key Laboratory of Molecular Neuroscience, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong 999077, China
| | - Xingchen Duan
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials, Ministry of Education, and College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Xiaoxuan Wang
- AIE Research Center, Shaanxi Key Laboratory of Phytochemistry, College of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji, Shaanxi 721013, China
| | - Chunxuan Qi
- AIE Research Center, Shaanxi Key Laboratory of Phytochemistry, College of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji, Shaanxi 721013, China
| | - Jacky W. Y. Lam
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration & Reconstruction, Institute for Advanced Study, Department of Chemical and Biomedical Engineering, Division of Life Science, State Key Laboratory of Molecular Neuroscience, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong 999077, China
| | - Dan Ding
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials, Ministry of Education, and College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Ben Zhong Tang
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration & Reconstruction, Institute for Advanced Study, Department of Chemical and Biomedical Engineering, Division of Life Science, State Key Laboratory of Molecular Neuroscience, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong 999077, China
- State Key Laboratory of Luminescent Materials and Devices, Center for Aggregation-Induced Emission, South China University of Technology, Guangzhou, Guangdong 510640, China
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223
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Zhang J, Qiu H, He T, Li Y, Yin S. Fluorescent Supramolecular Polymers Formed by Crown Ether-Based Host-Guest Interaction. Front Chem 2020; 8:560. [PMID: 32793552 PMCID: PMC7393952 DOI: 10.3389/fchem.2020.00560] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Accepted: 06/02/2020] [Indexed: 11/13/2022] Open
Abstract
Inspired by the vast array of assemblies present in nature, supramolecular chemistry has attracted significant attention on account of its diverse supra-structures, which include micelles, vesicles, and fibers, in addition to its extensive applications in luminescent materials, sensors, bioimaging, and drug delivery over the past decades. Supramolecular polymers, which represent a combination of supramolecular chemistry and polymer science, are constructed by non-covalent interactions, such as host-guest interactions, hydrogen bonding, hydrophobic or hydrophilic interactions, metal-ligand interactions, π-π stacking, and electrostatic interactions. To date, numerous host-guest recognition systems have been reported, including crown ethers, cyclodextrins, calixarenes, cucurbituril, pillararenes, and other macrocyclic hosts. Among them, crown ethers, as the first generation of macrocyclic hosts, provide a promising and facile alternative route to supramolecular polymers. In addition, the incorporation of fluorophores into supramolecular polymers could endow them with multiple properties and functions, thereby presenting potential advantages in the context of smart materials. Thus, this review focuses on the fabrication strategies, interesting properties, and potential applications of fluorescent supramolecular polymers based on crown ethers. Typical examples are presented and discussed in terms of three different types of building blocks, namely covalently bonded low-molecular-weight compounds, polymers modified by hosts or guests, and supramolecular coordination complexes.
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Affiliation(s)
- Jinjin Zhang
- College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, China
| | - Huayu Qiu
- College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, China.,Key Laboratory of Organosilicon Chemistry and Materials Technology of Ministry of Education, Hangzhou Normal University, Hangzhou, China
| | - Tian He
- College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, China
| | - Yang Li
- College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, China
| | - Shouchun Yin
- College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, China
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224
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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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225
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Morsby JJ, Dharmarwardana M, McGarraugh H, Smith BD. Supramolecular optimization of the visual contrast for colorimetric indicator assays that release resorufin dye. Chem Commun (Camb) 2020; 56:9296-9299. [PMID: 32666982 PMCID: PMC7429340 DOI: 10.1039/d0cc03551c] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A tetralactam macrocycle acts as a novel supramolecular adjuvant to capture a released resorufin dye and create a higher contrasting yellow/blue color change for enhanced naked eye interpretation of a colorimetric indicator assay.
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Affiliation(s)
- Janeala J Morsby
- Department of Chemistry and Biochemistry, University of Notre Dame, 251 Nieuwland Science Hall, Notre Dame, IN 46556, USA.
| | - Madushani Dharmarwardana
- Department of Chemistry and Biochemistry, University of Notre Dame, 251 Nieuwland Science Hall, Notre Dame, IN 46556, USA.
| | - Hannah McGarraugh
- Department of Chemistry and Biochemistry, University of Notre Dame, 251 Nieuwland Science Hall, Notre Dame, IN 46556, USA.
| | - Bradley D Smith
- Department of Chemistry and Biochemistry, University of Notre Dame, 251 Nieuwland Science Hall, Notre Dame, IN 46556, USA.
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226
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Sato S, Nojiri T, Okuyama N, Maeda K, Kirigane A. Synthesis and evaluation of a new water‐soluble fluorescent red dye, xanthene
bis‐
C
‐glycoside. J Heterocycl Chem 2020. [DOI: 10.1002/jhet.4050] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Shingo Sato
- Graduate School of Science and EngineeringYamagata University Yonezawa‐shi Japan
| | - Toshikatsu Nojiri
- Graduate School of Science and EngineeringYamagata University Yonezawa‐shi Japan
| | - Nao Okuyama
- Graduate School of Science and EngineeringYamagata University Yonezawa‐shi Japan
| | - Koya Maeda
- Graduate School of Science and EngineeringYamagata University Yonezawa‐shi Japan
| | - Aoi Kirigane
- Department of Biochemical EngineeringYamagata University Yonezawa‐shi Japan
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227
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Cao Z, Zhu Y, Li X, He Y, Zhang J, Xu L, Wei Y. tert-Butyl Bromide-Promoted Intramolecular Cyclization of 2-Arylamino Phenyl Ketones and Its Combination with Cu-Catalyzed C-N Coupling: Synthesis of Acridines at Room Temperature. J Org Chem 2020; 85:10167-10174. [PMID: 32568540 DOI: 10.1021/acs.joc.0c00137] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Herein, a facile intramolecular cyclization of 2-arylamino phenyl ketones is established to supersede the traditional high-temperature, strongly acidic conditions and achieve 9-substituted acridines, by virtue of the combination of 2,2,2-trifluoroethanol and tert-butyl bromide. This protocol can be merged well with the preceding Cu-catalyzed intermolecular Chan-Evans-Lam cross-coupling reactions, therefore enabling pot-economic modular synthesis of 9-substituted acridines from readily available 2-amino phenyl ketones and aryl boronic acids at room temperature.
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Affiliation(s)
- Zifeng Cao
- School of Chemistry and Chemical Engineering/Key Laboratory for Green Processing of Chemical Engineering of Xin-jiang Bingtuan, Shihezi University, Shihezi 832003, China
| | - Yuan Zhu
- School of Chemistry and Chemical Engineering/Key Laboratory for Green Processing of Chemical Engineering of Xin-jiang Bingtuan, Shihezi University, Shihezi 832003, China
| | - Xiaoman Li
- School of Chemistry and Chemical Engineering/Key Laboratory for Green Processing of Chemical Engineering of Xin-jiang Bingtuan, Shihezi University, Shihezi 832003, China
| | - Yang He
- School of Chemistry and Chemical Engineering/Key Laboratory for Green Processing of Chemical Engineering of Xin-jiang Bingtuan, Shihezi University, Shihezi 832003, China
| | - Jinli Zhang
- School of Chemistry and Chemical Engineering/Key Laboratory for Green Processing of Chemical Engineering of Xin-jiang Bingtuan, Shihezi University, Shihezi 832003, China
| | - Liang Xu
- School of Chemistry and Chemical Engineering/Key Laboratory for Green Processing of Chemical Engineering of Xin-jiang Bingtuan, Shihezi University, Shihezi 832003, China
| | - Yu Wei
- School of Chemistry and Chemical Engineering/Key Laboratory for Green Processing of Chemical Engineering of Xin-jiang Bingtuan, Shihezi University, Shihezi 832003, China
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228
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Zhang TX, Zhang ZZ, Yue YX, Hu XY, Huang F, Shi L, Liu Y, Guo DS. A General Hypoxia-Responsive Molecular Container for Tumor-Targeted Therapy. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1908435. [PMID: 32459030 DOI: 10.1002/adma.201908435] [Citation(s) in RCA: 73] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2019] [Revised: 04/29/2020] [Accepted: 05/01/2020] [Indexed: 06/11/2023]
Abstract
Enhanced drug delivery can improve the therapeutic efficacy of drugs and help overcome side effects. However, many reported drug-delivery systems are too complex and irreproducible for practical use. In this work, the design of a hypoxia-responsive molecular container based on calixarene, called CAC4A, which presents a significant advance in practical, hypoxia-targeted drug-delivery, is reported. CAC4A enables a wide variety of clinical drugs to be quantitatively loaded to improve their solubility and stability, as well as enable the administration of reduced doses. Furthermore, as a result of its azo functional groups, which are sensitive to reduction within a hypoxic environment, it is possible to achieve tumor-targeted drug-release with reduced side effects. CAC4A fulfils all essential requirements for a drug-delivery system in addition to multiple advantages, including facile preparation, well-defined molecular weight, and structure, and universal applicability. Such features collectively enable supramolecular prodrugs to be formulated simply and reproducibly, with potential for bench-to-bedside translation. Moreover, CAC4A is amenable to other therapy modalities and can be facilely decorated with functional groups and hybridized with nanomaterials, providing ample possibilities for its role in future drug-delivery systems.
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Affiliation(s)
- Tian-Xing Zhang
- College of Chemistry, Key Laboratory of Functional Polymer Materials (Ministry of Education), State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, China
| | - Zhan-Zhan Zhang
- College of Chemistry, Key Laboratory of Functional Polymer Materials (Ministry of Education), State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, 300071, China
| | - Yu-Xin Yue
- College of Chemistry, Key Laboratory of Functional Polymer Materials (Ministry of Education), State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, China
| | - Xin-Yue Hu
- College of Chemistry, Key Laboratory of Functional Polymer Materials (Ministry of Education), State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, China
| | - Fan Huang
- Institute of Radiation Medicine, Chinese Academy of Medical Science & Peking Union Medical College, Tianjin, 300192, China
| | - Linqi Shi
- College of Chemistry, Key Laboratory of Functional Polymer Materials (Ministry of Education), State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, 300071, China
| | - Yang Liu
- College of Chemistry, Key Laboratory of Functional Polymer Materials (Ministry of Education), State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, 300071, China
| | - Dong-Sheng Guo
- College of Chemistry, Key Laboratory of Functional Polymer Materials (Ministry of Education), State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, China
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229
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Ishino S, Masai H, Shimada S, Terao J. Change in the rate of pseudo[1]rotaxane formation by elongating the alkyl-chain-substituted diphenylethynylene linked to permethyl α-cyclodextrin. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152061] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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230
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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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231
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Sayed M, Tom DM, Pal H. Multimode binding and stimuli responsive displacement of acridine orange dye complexed with p-sulfonatocalix[4/6]arene macrocycles. Phys Chem Chem Phys 2020; 22:13306-13319. [PMID: 32510077 DOI: 10.1039/d0cp00030b] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Interaction of acridine orange (AOH+) dye with water soluble anionic p-sulfonatocalix[n]arene (SCXn) hosts, SCX4 and SCX6, having different cavity dimensions, has been investigated using multispectroscopic techniques. Intriguing modulation in the photophysical properties of AOH+ upon interaction with SCXn hosts indicate the formation of different host-guest complexes at different regions of the host concentrations. At lower host concentrations, AOH+ undergoes SCXn assisted aggregation, causing a drastic reduction in fluorescence intensity. At higher host concentrations, aggregated-AOH+-SCXn complexes disintegrate and monomeric-AOH+-SCXn exo and inclusion complexes are eventually formed, leading to a huge fluorescence enhancement finally. Observed effects are more pronounced with SCX6 as compared to SCX4 host. Time-resolved fluorescence studies indicate that at very high host concentrations, there is also a diffusion-controlled dynamic quenching for both monomeric-AOH+-SCXn exo and inclusion complexes, caused by the free SCXn present in the solution, a phenomenon not reported before for such host-guest systems. The aggregated-AOH+-SCXn complexes at lower host concentration were employed to investigate displacement study using an antiviral drug, 1-adamantanamine (AD) and a neurotransmitter, acetylcholine (AcCh), as the competitive binders cum external stimuli, which resulted in a drastic recovery of the fluorescence reduced initially due to aggregation process. Though both the AOH+-SCXn systems act as efficient supramolecular assemblies in sensing AD and AcCh as the analytes through fluorescence "OFF-ON" mechanism, the effect is more pronounced for AOH+-SCX4 system as compared to AOH+-SCX6. SCXn induced interesting modulation in the photophysical properties of AOH+ and the stimulus responsive dye displacement observed for aggregated-AOH+-SCXn systems can expectedly find applications in fluorescence OFF-ON sensing, supramolecular functional materials and similar others.
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Affiliation(s)
- Mhejabeen Sayed
- Radiation and Photochemistry Division, Bhabha Atomic Research Centre, Mumbai 400085, India. and Homi Bhabha National Institute, Anushaktinagar, Mumbai 400094, India.
| | - Dona M Tom
- Radiation and Photochemistry Division, Bhabha Atomic Research Centre, Mumbai 400085, India.
| | - Haridas Pal
- Homi Bhabha National Institute, Anushaktinagar, Mumbai 400094, India. and Analytical Chemistry Division, Bhabha Atomic Research Centre, Mumbai 400085, India
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232
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Livshits VA, Meshkov BB, Avakyan VG, Titov SV. ESR, STESR, DFT, and MD Study of the Dynamical Structure of Cucurbituril[7]-Spin Probe Guest-Host Complexes. ACS OMEGA 2020; 5:11901-11914. [PMID: 32548369 PMCID: PMC7271031 DOI: 10.1021/acsomega.9b03772] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Accepted: 05/07/2020] [Indexed: 06/11/2023]
Abstract
We study the molecular dynamics and structures of the guest-host complexes of cucurbituril, CB[7], with spin probes through the conventional electron spin resonance (ESR), saturation transfer ESR (STESR), density functional theory (DFT), and molecular dynamics (MD) computations. Protonated TEMPOamine (I), a derivative of TEMPO having a positive charge and an octyl group on the quaternary nitrogen atom (II), and the neutral spin-labeled indole (III) are used as guests. To eliminate the overall complex rotation, the solutions of complexes in a solid CB[7] matrix were prepared. Resultantly, for all of the spin probes, the combined study of the conventional ESR and STESR spectra indicates the librational character of the rotational motion within the CB[7] cavity as opposed to the diffusional rotation over the whole solid angle. The kinetic accessibilities of the reporter NO groups to the paramagnetic complexes in aqueous solutions, determined by Heisenberg exchange broadening of the ESR spectra, together with the environment polarities from the hyperfine interaction values, as well as DFT computation results and MD simulations, were used to estimate the spin probe location relative to CB[7]. Utilizing the concept of the aqueous clusters surrounding the spin probes and CB[7] molecules and MD simulations has allowed the application of DFT to estimate the aqueous environment effects on the complexation energy and spatial structure of the guest-host complexes.
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233
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Miskolczy Z, Megyesi M, Biczók L, Prabodh A, Biedermann F. Kinetics and Mechanism of Cation-Induced Guest Release from Cucurbit[7]uril. Chemistry 2020; 26:7433-7441. [PMID: 31943402 PMCID: PMC7318709 DOI: 10.1002/chem.201905633] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Indexed: 12/11/2022]
Abstract
The release of two organic guests from cucurbit[7]uril (CB7) was selectively monitored by the stopped‐flow method in aqueous solutions of inorganic salts to reveal the mechanistic picture in detail. Two contrasting mechanisms were identified: The symmetric dicationic 2,7‐dimethyldiazapyrenium shows a cation‐independent complex dissociation mechanism coupled to deceleration of the ingression in the presence of alkali and alkaline earth cations (Mn+) due to competitive formation of CB7–Mn+ complexes. A much richer, unprecedented kinetic behaviour was observed for the ingression and egression of the monocationic and non‐symmetric berberine (B+). The formation of ternary complex B+–CB7–Mn+ was unambiguously revealed. A difference of more than two orders of magnitude was found in the equilibrium constants of Mn+ binding to B+–CB7 inclusion complex. Large cations, such as K+ and Ba2+, also promoted B+ expulsion from the ternary complex in a bimolecular process. This study reveals a previously hidden mechanistic picture and motivates systematic kinetic investigations of other host–guest systems.
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Affiliation(s)
- Zsombor Miskolczy
- Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, P.O. Box 286, 1519, Budapest, Hungary
| | - Mónika Megyesi
- Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, P.O. Box 286, 1519, Budapest, Hungary
| | - László Biczók
- Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, P.O. Box 286, 1519, Budapest, Hungary
| | - Amrutha Prabodh
- Institute of Nanotechnology (INT), 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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234
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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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235
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Towards novel functional polymers: Ring-opening polymerization of l-lactide with p-tert-butylthiacalix[4]arene derivatives. REACT FUNCT POLYM 2020. [DOI: 10.1016/j.reactfunctpolym.2020.104546] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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236
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Complexation of a cationic pyrene derivative with sulfobutylether substituted β-cyclodextrin: Towards a stimulus-responsive supramolecular material. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.112840] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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237
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De Los Reyes-Berbel E, Ortiz-Gomez I, Ortega-Muñoz M, Salinas-Castillo A, Capitan-Vallvey LF, Hernandez-Mateo F, Lopez-Jaramillo FJ, Santoyo-Gonzalez F. Carbon dots-inspired fluorescent cyclodextrins: competitive supramolecular "off-on" (bio)sensors. NANOSCALE 2020; 12:9178-9185. [PMID: 32297891 DOI: 10.1039/d0nr01004a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Chromophore-appended cyclodextrins combine the supramolecular loading capabilities of cyclodextrins (CDs) with the optical properties of the affixed chromophores. Among fluorescent materials, carbon dots (CNDs) are attractive and the feasibility of CND-appended CDs as sensors has been demonstrated by different authors. However, CNDs are intrinsically heterogeneous materials and their ulterior functionalization yields hybrid composites that are not well defined in terms of structure and composition. Inspired by the fluorescence properties of 5-oxo-1,2,3,5-tetrahydroimidazo[1,2-a]pyridine-7-carboxylic acid (IPCA), the most paradigmatic of the molecular fluorophores detected in CNDs, herein we report two highly efficient synthetic chemical strategies for the preparation of IPCA-appended CDs that behave as CND-based CD "turn off-on" biosensors suitable for the analysis of cholesterol and β-galactosidase activity. We have deconstructed the CND-CD systems to demonstrate that (i) the role of CNDs is limited to acting as a support for the molecular fluorophores produced during their synthesis and (ii) the molecular fluorophores suffice for the determination of the enzymatic activity based on the quenching by p-nitrophenol as a sacrificial quencher.
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Affiliation(s)
- Eduardo De Los Reyes-Berbel
- Department of Organic Chemistry, Biotechnology Institute, Faculty of Sciences, Campus Fuentenueva sn, University of Granada, 18071-Granada, Spain.
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238
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Dewantari AA, Yongwattana N, Payongsri P, Seemakhan S, Borwornpinyo S, Ojida A, Wongkongkatep J. Fluorescence Detection of Deoxyadenosine in Cordyceps spp. by Indicator Displacement Assay. Molecules 2020; 25:molecules25092045. [PMID: 32353945 PMCID: PMC7248813 DOI: 10.3390/molecules25092045] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 04/24/2020] [Accepted: 04/26/2020] [Indexed: 02/07/2023] Open
Abstract
A rapid, sensitive and reliable indicator displacement assay (IDA) for specific detection of 2′- and 3′-deoxyadenosine (2′-dAde and 3′-dAde), the latter is also known as cordycepin, was established. The formation of inclusion complex between protonated acridine orange (AOH+) and cucurbit[7]uril (CB7) resulted in the hypochromic shift of fluorescent emission from 530 nm to 512 nm. Addition of cordycepin to the highly fluorescent AOH+/CB7 complex resulted in a unique tripartite AOH+/CB7/dAde complex with diminished fluorescence, and such reduction in emission intensity serves as the basis for our novel sensing system. The detection limits were 11 and 82 μM for 2′- and 3′-deoxyadenosine, respectively. The proposed method also demonstrated high selectivity toward 2′- and 3′-deoxyadenosine, owing to the inability of other deoxynucleosides, nucleosides and nucleotides commonly found in Cordyceps spp. to displace the AOH+ from the AOH+/CB7 complex, which was confirmed by isothermal titration calorimetry (ITC), UV-Visible and proton nuclear magnetic resonance (1H-NMR) spectroscopy. Our method was successfully implemented in the analysis of cordycepin in commercially available Ophiocordyceps and Cordyceps supplements, providing a novel and effective tool for quality assessment of these precious fungi with several health benefits.
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Affiliation(s)
- Arinta Agnie Dewantari
- Department of Biotechnology, Faculty of Science, Mahidol University, Bangkok 10400, Thailand; (A.A.D.); (N.Y.); (P.P.); (S.B.)
| | - Nattha Yongwattana
- Department of Biotechnology, Faculty of Science, Mahidol University, Bangkok 10400, Thailand; (A.A.D.); (N.Y.); (P.P.); (S.B.)
| | - Panwajee Payongsri
- Department of Biotechnology, Faculty of Science, Mahidol University, Bangkok 10400, Thailand; (A.A.D.); (N.Y.); (P.P.); (S.B.)
| | - Sawinee Seemakhan
- Excellent Center for Drug Discovery, Faculty of Science, Mahidol University, Bangkok 10400, Thailand;
| | - Suparerk Borwornpinyo
- Department of Biotechnology, Faculty of Science, Mahidol University, Bangkok 10400, Thailand; (A.A.D.); (N.Y.); (P.P.); (S.B.)
- Excellent Center for Drug Discovery, Faculty of Science, Mahidol University, Bangkok 10400, Thailand;
| | - Akio Ojida
- Graduate School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan;
| | - Jirarut Wongkongkatep
- Department of Biotechnology, Faculty of Science, Mahidol University, Bangkok 10400, Thailand; (A.A.D.); (N.Y.); (P.P.); (S.B.)
- Correspondence: ; Tel.: +66-2201-5302
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239
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Hu X, Liu F, Zhang X, Zhao Z, Liu S. Expected and unexpected photoreactions of 9-(10-)substituted anthracene derivatives in cucurbit[ n]uril hosts. Chem Sci 2020; 11:4779-4785. [PMID: 34122934 PMCID: PMC8159169 DOI: 10.1039/d0sc00409j] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Accepted: 04/23/2020] [Indexed: 11/21/2022] Open
Abstract
By arranging substrates in a "reaction ready" state through noncovalent interactions, supramolecular nanoreactors/catalysts show high selectivity and/or rate acceleration features. Herein, we report the host-guest complexation of 9-(10-)substituted anthracene derivatives (G1-G3) with cucurbit[n]uril (CB[n], n = 8, 10), and the photoreactions of these derivatives in the presence of CB[n] hosts. Both CB[10] and CB[8] showed no obvious effects on the photoreaction of 9,10-disubstituted derivative G1. For G2 and G3, CB[10] operated as either a nanoreactor or catalyst (10%) for the photodimerization of two compounds with high selectivity and high yield. However, although CB[8] formed a 1 : 2 complex with G2, as also observed with CB[10], the photosolvolysis product (9-anthracenemethanol) was obtained quantitatively after photoirradiation of the CB[8]·2G2 complex. This unexpected photosolvolysis was rationalized by a plausible catalytic cycle in which anthracene acts as a photoremovable protecting group (PPG) and the carbonium ion intermediate is stabilized by CB[8].
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Affiliation(s)
- Xianchen Hu
- The State Key Laboratory of Refractories and Metallurgy, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology Wuhan 430081 China
| | - Fengbo Liu
- The State Key Laboratory of Refractories and Metallurgy, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology Wuhan 430081 China
| | - Xiongzhi Zhang
- The State Key Laboratory of Refractories and Metallurgy, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology Wuhan 430081 China
- Institute of Advanced Materials and Nanotechnology, Wuhan University of Science and Technology Wuhan 430081 China
| | - Zhiyong Zhao
- The State Key Laboratory of Refractories and Metallurgy, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology Wuhan 430081 China
- Institute of Advanced Materials and Nanotechnology, Wuhan University of Science and Technology Wuhan 430081 China
| | - Simin Liu
- The State Key Laboratory of Refractories and Metallurgy, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology Wuhan 430081 China
- Institute of Advanced Materials and Nanotechnology, Wuhan University of Science and Technology Wuhan 430081 China
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240
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Liu W, Lin C, Weber JA, Stern CL, Young RM, Wasielewski MR, Stoddart JF. Cyclophane-Sustained Ultrastable Porphyrins. J Am Chem Soc 2020; 142:8938-8945. [PMID: 32243141 DOI: 10.1021/jacs.0c02311] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
We report the encapsulation of free-base and zinc porphyrins by a tricyclic cyclophane receptor with subnanomolar binding affinities in water. The high affinities are sustained by the hydrophobic effect and multiple [CH···π] interactions covering large [π···π] stacking surfaces between the substrate porphyrins and the receptor. We discovered two co-conformational isomers of the 1:1 complex, where the porphyrin is orientated differently inside the binding cavity of the receptor on account of its tricyclic nature. The photophysical properties and chemical reactivities of the encapsulated porphyrins are modulated to a considerable extent by the receptor. Improved fluorescence quantum yields, red-shifted absorptions and emissions, and nearly quantitative energy transfer processes highlight the emergent photophysical enhancements. The encapsulated porphyrins enjoy unprecedented chemical stabilities, where their D/H exchange, protonation, and solvolysis under extremely acidic conditions are completely blocked. We anticipate that the ultrahigh stabilities and improved optical properties of these encapsulated porphyrins will find applications in single-molecule materials, artificial photodevices, and biomedical appliances.
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Affiliation(s)
- Wenqi Liu
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Chenjian Lin
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Jacob A Weber
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Charlotte L Stern
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Ryan M Young
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Michael R Wasielewski
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - J Fraser Stoddart
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States.,Institute for Molecular Design and Synthesis, Tianjin University, Tianjin 300072, China.,School of Chemistry, University of New South Wales, Sydney, NSW 2052, Australia
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241
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Cai X, Kataria R, Gibb BC. Intrinsic and Extrinsic Control of the p Ka of Thiol Guests inside Yoctoliter Containers. J Am Chem Soc 2020; 142:8291-8298. [PMID: 32271561 DOI: 10.1021/jacs.0c00907] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Despite decades of research, there are still many open questions surrounding the mechanisms by which enzymes catalyze reactions. Understanding all the noncovalent forces involved has the potential to allow de novo catalysis design, and as a step toward this, understanding how to control the charge state of ionizable groups represents a powerful yet straightforward approach to probing complex systems. Here we utilize supramolecular capsules assembled via the hydrophobic effect to encapsulate guests and control their acidity. We find that the greatest influence on the acidity of bound guests is the location of the acidic group within the yoctoliter space. However, the nature of the electrostatic field generated by the (remote) charged solubilizing groups also plays a significant role in acidity, as does counterion complexation to the outer surfaces of the capsules. Taken together, these results suggest new ways by which to affect reactions in confined spaces.
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Affiliation(s)
- Xiaoyang Cai
- Department of Chemistry, Tulane University, New Orleans, Louisiana 70118, United States
| | - Rhea Kataria
- Department of Chemistry, Tulane University, New Orleans, Louisiana 70118, United States
| | - Bruce C Gibb
- Department of Chemistry, Tulane University, New Orleans, Louisiana 70118, United States
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242
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Shen FF, Zhang YM, Dai XY, Zhang HY, Liu Y. Alkyl-Substituted Cucurbit[6]uril Bridged β-Cyclodextrin Dimer Mediated Intramolecular FRET Behavior. J Org Chem 2020; 85:6131-6136. [PMID: 32264676 DOI: 10.1021/acs.joc.9b03513] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A novel triazolyl bridged cucurbituril (CB)-cyclodextrin (CD) dimer was synthesized via click reaction of monopropargyl modified octamethylcucurbit[6]uril and mono-6-azido-β-cyclodextrin. Moreover, it could form stable supramolecular inclusion complexes possessing efficient fluorescence resonance energy transfer, which benefited from the fact that CD and CB can bind amantadine- and pyridinium-containing fluorophores simultaneously. The supramolecular inclusion complex behaviors were investigated by NMR spectroscopy, UV-vis absorption, and fluorescence spectroscopy.
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Affiliation(s)
- Fang-Fang Shen
- College of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
| | - Ying-Ming Zhang
- College of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
| | - Xian-Yin Dai
- College of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
| | - Hao-Yang Zhang
- College of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
| | - Yu Liu
- College of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
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243
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Hayashida O, Shibata K. Stimuli-Responsive Supramolecular Coaggregation and Disaggregation of Host-Guest Conjugates Having a Disulfide Linkage. J Org Chem 2020; 85:5493-5502. [PMID: 32233372 DOI: 10.1021/acs.joc.0c00237] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Water-soluble cationic and anionic cyclophanes (1a and 2a, respectively) having a dabsyl group with a cleavable disulfide linkage were synthesized as a host-guest conjugate covalently bound with both host and guest components. Self-inclusion phenomena but not self-aggregation behaviors were observed for each cyclophane in aqueous media. Each cyclophane includes its own dabsyl moiety (guest component) in its macrocyclic cavity (host component) through hydrophobic interaction. When 1 equiv. of cationic 1a was added to an aqueous solution of anionic 2a, however, supramolecular coaggregates formed spontaneously through host-guest complexation. As regard the supramolecular coaggregates, the existence of larger particles was confirmed by DLS measurements and TEM observation. The hydrophobic interaction between the dabsyl moiety and macrocyclic cavity and electrostatic interactions between 1a and 2a play important roles in the supramolecular coaggregate formation. Each cyclophane having a cleavable disulfide linkage was easily transformed to the corresponding thiols by reducing reagents such as DTT, which was confirmed by MALDI-TOF MS. Disaggregation of the supramolecular coaggregates composed of 1a and 2a was successfully performed upon addition of DTT, with release of the thiol derivative of dabsyl. Such disaggregation of the coaggregates was also conducted by other external stimuli such as salts and competitive guests.
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Affiliation(s)
- Osamu Hayashida
- Department of Chemistry, Faculty of Science, Fukuoka University, Nanakuma 8-19-1, Fukuoka 814-0180, Japan
| | - Kana Shibata
- Department of Chemistry, Faculty of Science, Fukuoka University, Nanakuma 8-19-1, Fukuoka 814-0180, Japan
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244
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Remón P, González D, Romero MA, Basílio N, Pischel U. Chemical signal cascading in a supramolecular network. Chem Commun (Camb) 2020; 56:3737-3740. [PMID: 32124901 DOI: 10.1039/d0cc00217h] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A chemically-triggered signalling cascade between cucurbituril host-guest complexes by means of multi-step competitive displacement is demonstrated. The inter-complex communication of chemical information yields the release of bio-relevant cargo, reminiscent of cellular signalling pathways.
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Affiliation(s)
- Patricia Remón
- CIQSO - Centre for Research in Sustainable Chemistry and Department of Chemistry, University of Huelva, Campus de El Carmen s/n, E-21071 Huelva, Spain.
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245
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Cheng Q, Cao Z, Hao A, Zhao Y, Xing P. Fluorescent Imprintable Hydrogels via Organic/Inorganic Supramolecular Coassembly. ACS APPLIED MATERIALS & INTERFACES 2020; 12:15491-15499. [PMID: 32156108 DOI: 10.1021/acsami.0c04418] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Photoresponsive hydrogels with on/off luminescence show a promising application potential in writable information recording and display materials. However, it still remains a tremendous challenge to fabricate such hydrogels on account of the intrinsic fluorescence quenching effect and the lack of suitable responsive groups. Herein, we present fluorescent imprintable hydrogels constructed via organic/inorganic supramolecular coassembly. A photoisomeric cyanostilbene conjugated cationic surfactant exhibited an aggregation-induced emission behavior upon clay (laponite) complexation, along with excellent thixotropism brought by laponite. Macrocyclic cucurbituril[7] and β-cyclodextrin rings capable of forming host-guest complexes with the surfactant were utilized to give ternary hybrid hydrogels with luminescence and photoresponsive properties. On the account of trans-cis photoisomerization of the cyanostilbene unit, the fluorescence of the multicomponent hydrogels could undergo rapid quenching within a short irradiation period under UV light and be recovered when subjected to an annealing process. According to these properties, the imprinted fluorescent patterns using the hybrid hydrogels were erasable and rewritable. Thus, this research successfully integrates host-guest complexation and supramolecular coassembly into the fabrication of fluorescent imprintable hydrogels.
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Affiliation(s)
- Qiuhong Cheng
- Key Laboratory of Colloid and Interface Chemistry of Ministry of Education and School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, People's Republic of China
| | - Zhaozhen Cao
- Key Laboratory of Colloid and Interface Chemistry of Ministry of Education and School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, People's Republic of China
| | - Aiyou Hao
- Key Laboratory of Colloid and Interface Chemistry of Ministry of Education and School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, People's Republic of China
| | - Yanli Zhao
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore
| | - Pengyao Xing
- Key Laboratory of Colloid and Interface Chemistry of Ministry of Education and School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, People's Republic of China
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore
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246
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Synthesis, Adsorption, and Recognition Properties of a Solid Symmetric Tetramethylcucurbit[6]uril-Based Porous Supramolecular Framework. J CHEM-NY 2020. [DOI: 10.1155/2020/9619461] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
In this work, we reported a porous supramolecular framework (A) constructed of a symmetric tetramethylcucurbit[6]uril (TMeQ[6]) in aqueous HCl solutions; the driving force was the outer surface interaction of cucurbit[n]urils, as well as hydrogen bonding between latticed water molecules and portal carbonyl oxygens of TMeQ[6]. Adsorption experimental results revealed that the porous supramolecular framework can absorb certain fluorophore guests (FGs) to form luminescent assemblies (FG@As) by fluorescence enhancement or colour change, and some of them can respond to certain volatile organic compounds. Thus, the TMeQ[6]-based supramolecular framework could be used as a sensor for certain gas or volatile compounds.
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247
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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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248
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Xu K, Zhang Z, Yu C, Wang B, Dong M, Zeng X, Gou R, Cui L, Li C. A Modular Synthetic Strategy for Functional Macrocycles. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202000909] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Kaidi Xu
- Key Laboratory of Inorganic-Organic Hybrid Functional Material ChemistryMinistry of EducationTianjin Key Laboratory of Structure and Performance for Functional MoleculesCollege of ChemistryTianjin Normal University Tianjin 300387 P. R. China
- Center for Supramolecular Chemistry and Catalysis and Department of ChemistryShanghai University Shanghai 200444 P. R. China
| | - Zhi‐Yuan Zhang
- Key Laboratory of Inorganic-Organic Hybrid Functional Material ChemistryMinistry of EducationTianjin Key Laboratory of Structure and Performance for Functional MoleculesCollege of ChemistryTianjin Normal University Tianjin 300387 P. R. China
| | - Chengmao Yu
- Key Laboratory of Inorganic-Organic Hybrid Functional Material ChemistryMinistry of EducationTianjin Key Laboratory of Structure and Performance for Functional MoleculesCollege of ChemistryTianjin Normal University Tianjin 300387 P. R. China
- Center for Supramolecular Chemistry and Catalysis and Department of ChemistryShanghai University Shanghai 200444 P. R. China
| | - Bin Wang
- Key Laboratory of Inorganic-Organic Hybrid Functional Material ChemistryMinistry of EducationTianjin Key Laboratory of Structure and Performance for Functional MoleculesCollege of ChemistryTianjin Normal University Tianjin 300387 P. R. China
| | - Ming Dong
- Key Laboratory of Inorganic-Organic Hybrid Functional Material ChemistryMinistry of EducationTianjin Key Laboratory of Structure and Performance for Functional MoleculesCollege of ChemistryTianjin Normal University Tianjin 300387 P. R. China
| | - Xianqiang Zeng
- Center for Supramolecular Chemistry and Catalysis and Department of ChemistryShanghai University Shanghai 200444 P. R. China
| | - Rui Gou
- Center for Supramolecular Chemistry and Catalysis and Department of ChemistryShanghai University Shanghai 200444 P. R. China
| | - Lei Cui
- Center for Supramolecular Chemistry and Catalysis and Department of ChemistryShanghai University Shanghai 200444 P. R. China
| | - Chunju Li
- Key Laboratory of Inorganic-Organic Hybrid Functional Material ChemistryMinistry of EducationTianjin Key Laboratory of Structure and Performance for Functional MoleculesCollege of ChemistryTianjin Normal University Tianjin 300387 P. R. China
- Center for Supramolecular Chemistry and Catalysis and Department of ChemistryShanghai University Shanghai 200444 P. R. China
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249
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Xu K, Zhang ZY, Yu C, Wang B, Dong M, Zeng X, Gou R, Cui L, Li C. A Modular Synthetic Strategy for Functional Macrocycles. Angew Chem Int Ed Engl 2020; 59:7214-7218. [PMID: 32052539 DOI: 10.1002/anie.202000909] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Indexed: 12/15/2022]
Abstract
Reported here is a molecule-Lego synthetic strategy for macrocycles with functional skeletons, involving one-pot and high-yielding condensation between bis(2,4-dimethoxyphenyl)arene monomers and paraformaldehyde. By changing the blocks, variously functional units (naphthalene, pyrene, anthraquinone, porphyrin, etc.) can be conveniently introduced into the backbone of macrocycles. Interestingly, the macrocyclization can be tuned by the geometrical configuration of monomeric blocks. Linear (180°) monomer yield cyclic trimers and pentamers, while V-shaped (120°, 90° and 60°) monomers tend to form dimers. More significantly, even heterogeneous macrocycles are obtained in moderate yield by co-oligomerization of different monomers. This series of macrocycles have the potential to be prosperous in the near future.
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Affiliation(s)
- Kaidi Xu
- Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry, Ministry of Education, Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin, 300387, P. R. China.,Center for Supramolecular Chemistry and Catalysis and Department of Chemistry, Shanghai University, Shanghai, 200444, P. R. China
| | - Zhi-Yuan Zhang
- Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry, Ministry of Education, Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin, 300387, P. R. China
| | - Chengmao Yu
- Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry, Ministry of Education, Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin, 300387, P. R. China.,Center for Supramolecular Chemistry and Catalysis and Department of Chemistry, Shanghai University, Shanghai, 200444, P. R. China
| | - Bin Wang
- Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry, Ministry of Education, Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin, 300387, P. R. China
| | - Ming Dong
- Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry, Ministry of Education, Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin, 300387, P. R. China
| | - Xianqiang Zeng
- Center for Supramolecular Chemistry and Catalysis and Department of Chemistry, Shanghai University, Shanghai, 200444, P. R. China
| | - Rui Gou
- Center for Supramolecular Chemistry and Catalysis and Department of Chemistry, Shanghai University, Shanghai, 200444, P. R. China
| | - Lei Cui
- Center for Supramolecular Chemistry and Catalysis and Department of Chemistry, Shanghai University, Shanghai, 200444, P. R. China
| | - Chunju Li
- Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry, Ministry of Education, Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin, 300387, P. R. China.,Center for Supramolecular Chemistry and Catalysis and Department of Chemistry, Shanghai University, Shanghai, 200444, P. R. China
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250
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Lee H, Shahrivarkevishahi A, Lumata JL, Luzuriaga MA, Hagge LM, Benjamin CE, Brohlin OR, Parish CR, Firouzi HR, Nielsen SO, Lumata LL, Gassensmith JJ. Supramolecular and biomacromolecular enhancement of metal-free magnetic resonance imaging contrast agents. Chem Sci 2020; 11:2045-2050. [PMID: 32180926 PMCID: PMC7053506 DOI: 10.1039/c9sc05510j] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Accepted: 01/14/2020] [Indexed: 12/20/2022] Open
Abstract
Many contrast agents for magnetic resonance imaging are based on gadolinium, however side effects limit their use in some patients. Organic radical contrast agents (ORCAs) are potential alternatives, but are reduced rapidly in physiological conditions and have low relaxivities as single molecule contrast agents. Herein, we use a supramolecular strategy where cucurbit[8]uril binds with nanomolar affinities to ORCAs and protects them against biological reductants to create a stable radical in vivo. We further overcame the weak contrast by conjugating this complex on the surface of a self-assembled biomacromolecule derived from the tobacco mosaic virus.
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Affiliation(s)
- Hamilton Lee
- Department of Chemistry and Biochemistry , The University of Texas at Dallas , 800 West Campbell Rd. , Richardson , TX 75080 , USA . ; www.twitter.com/gassensmith
| | - Arezoo Shahrivarkevishahi
- Department of Chemistry and Biochemistry , The University of Texas at Dallas , 800 West Campbell Rd. , Richardson , TX 75080 , USA . ; www.twitter.com/gassensmith
| | - Jenica L Lumata
- Department of Chemistry and Biochemistry , The University of Texas at Dallas , 800 West Campbell Rd. , Richardson , TX 75080 , USA . ; www.twitter.com/gassensmith
| | - Michael A Luzuriaga
- Department of Chemistry and Biochemistry , The University of Texas at Dallas , 800 West Campbell Rd. , Richardson , TX 75080 , USA . ; www.twitter.com/gassensmith
| | - Laurel M Hagge
- Department of Chemistry and Biochemistry , The University of Texas at Dallas , 800 West Campbell Rd. , Richardson , TX 75080 , USA . ; www.twitter.com/gassensmith
| | - Candace E Benjamin
- Department of Chemistry and Biochemistry , The University of Texas at Dallas , 800 West Campbell Rd. , Richardson , TX 75080 , USA . ; www.twitter.com/gassensmith
| | - Olivia R Brohlin
- Department of Chemistry and Biochemistry , The University of Texas at Dallas , 800 West Campbell Rd. , Richardson , TX 75080 , USA . ; www.twitter.com/gassensmith
| | - Christopher R Parish
- Department of Physics , The University of Texas at Dallas , 800 West Campbell Rd. , Richardson , TX 75080 , USA
| | - Hamid R Firouzi
- Department of Chemistry and Biochemistry , The University of Texas at Dallas , 800 West Campbell Rd. , Richardson , TX 75080 , USA . ; www.twitter.com/gassensmith
| | - Steven O Nielsen
- Department of Chemistry and Biochemistry , The University of Texas at Dallas , 800 West Campbell Rd. , Richardson , TX 75080 , USA . ; www.twitter.com/gassensmith
| | - Lloyd L Lumata
- Department of Physics , The University of Texas at Dallas , 800 West Campbell Rd. , Richardson , TX 75080 , USA
| | - Jeremiah J Gassensmith
- Department of Chemistry and Biochemistry , The University of Texas at Dallas , 800 West Campbell Rd. , Richardson , TX 75080 , USA . ; www.twitter.com/gassensmith
- Department of Bioengineering , The University of Texas at Dallas , 800 West Campbell Rd. , Richardson , TX 75080 , USA
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