1
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Penasa R, Pandey AK, Wurst K, Rancan M, Armelao L, Licini G, Zonta C. Ion-Pairing Stereodynamic Probes for Circular Dichroism Chiral Sensing of Amines. Inorg Chem 2024. [PMID: 39250823 DOI: 10.1021/acs.inorgchem.4c02531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/11/2024]
Abstract
Tris(2-pyridylmethyl)amine (TPMA) and tris(2-phenolmethyl)amine (TPA) metal complexes have been extensively used for catalysis and molecular recognition applications. In particular, due to their ability to form stereodynamic complexes through the helical arrangement of the ligand around the metal in a propeller shape, chiroptical sensing has been extensively investigated. In particular, the capability of the analyte, usually a Lewis base, to bind the metal complex has been the predominant recognition motif. Herein, we report the synthesis and application of a zinc TPA-based stereodynamic probe for the sensing of chiral amines and amino-alcohols in which an ion-pair interaction between the anionic metal complexes and the ammonium ions is responsible for the recognition.
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Affiliation(s)
- Roberto Penasa
- Department of Chemical Sciences, University of Padova, Via Marzolo 1, 35131 Padova, Italy
| | - Anjani Kumar Pandey
- Department of Chemical Sciences, University of Padova, Via Marzolo 1, 35131 Padova, Italy
| | - Klaus Wurst
- Department of General, Inorganic and Theoretical Chemistry, University of Innsbruck, A6020 Innsbruck, Austria
| | - Marzio Rancan
- Institute of Condensed Matter Chemistry and Technologies for Energy (ICMATE) National Research Council (CNR) c/o Department of Chemical Sciences (DiSC) University of Padova, Via F. Marzolo 1, 35131 Padova, Italy
| | - Lidia Armelao
- Department of Chemical Sciences, University of Padova, Via Marzolo 1, 35131 Padova, Italy
- Department of Chemical Sciences and Materials Technologies (DSCTM), National Research Council (CNR), Piazzale A. Moro 7, 00185 Roma, Italy
| | - Giulia Licini
- Department of Chemical Sciences, University of Padova, Via Marzolo 1, 35131 Padova, Italy
- CIRCC Interuniversity Consortium Chemical Reactivity and Catalysis, Via Celso Ulpiani 27, 70126 Bari, Italy
| | - Cristiano Zonta
- Department of Chemical Sciences, University of Padova, Via Marzolo 1, 35131 Padova, Italy
- CIRCC Interuniversity Consortium Chemical Reactivity and Catalysis, Via Celso Ulpiani 27, 70126 Bari, Italy
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2
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Yang K, Wang R, Lu J, Wang J, Liao X, Wang C. A covalent organic framework nanosheet-nanochannel composite with signal amplification strategy for electrochemical enantioselective recognition. Talanta 2024; 277:126331. [PMID: 38823324 DOI: 10.1016/j.talanta.2024.126331] [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: 05/06/2024] [Revised: 05/18/2024] [Accepted: 05/27/2024] [Indexed: 06/03/2024]
Abstract
Recognition and separation of chiral isomers are of great importance in both industrial and biological applications. However, owing to identical molecular formulas and chemical properties of enantiomers, signal transduction and amplification are still two major challenges in chiral sensing. In this study, we developed an enantioselective device by integrating chiral covalent organic framework nanosheets (CONs) with nanochannels for sensitive identification and quantification of enantiomers. Using 3,4-dihydroxyphenylalanine (DOPA) as the model analyte, the as-prepared chiral nanofluidic device exhibits a remarkable chiral recognition ability to l-DOPA than d-DOPA. More importantly, due to the chelation of DOPA with Fe3+ ions, it can efficiently block the ion transport through channel and shield the channel surface charge, which will amplify the difference in the electrochemical response of l-DOPA and d-DOPA. Therefore, a sensitive chiral recognition can be achieved using the present nanofluidic device coupled using electrochemical amplification strategy. Notably, using this method, an ultra-low concentration of l-DOPA (as low as 0.21 pM) can be facilely and successfully detected with a linear range of 1 pM-10 μM. This study provides a reliable and sensitive approach for achieving highly selective detection of chiral molecules.
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Affiliation(s)
- Kun Yang
- Jiangsu Key Laboratory of Biofunctional Materials, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of New Power Batteries, College of Chemistry and Materials Science, Nanjing Normal University, Nanjing, 210023, China
| | - Ruyi Wang
- Jiangsu Key Laboratory of Biofunctional Materials, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of New Power Batteries, College of Chemistry and Materials Science, Nanjing Normal University, Nanjing, 210023, China
| | - Junjian Lu
- Jiangsu Key Laboratory of Biofunctional Materials, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of New Power Batteries, College of Chemistry and Materials Science, Nanjing Normal University, Nanjing, 210023, China; Honors college, Nanjing Normal University, Nanjing, 210023, China
| | - Jin Wang
- Jiangsu Key Laboratory of Biofunctional Materials, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of New Power Batteries, College of Chemistry and Materials Science, Nanjing Normal University, Nanjing, 210023, China
| | - Xuewei Liao
- Jiangsu Key Laboratory of Biofunctional Materials, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of New Power Batteries, College of Chemistry and Materials Science, Nanjing Normal University, Nanjing, 210023, China; Analytical & Testing Center, Nanjing Normal University, Nanjing, 210023, China.
| | - Chen Wang
- Jiangsu Key Laboratory of Biofunctional Materials, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of New Power Batteries, College of Chemistry and Materials Science, Nanjing Normal University, Nanjing, 210023, China.
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3
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Kumar Sharma A, Som S, Chopra D, Srivastava A. Modulating Helix-Preference of an Axially-Twisted Molecular Scaffold Through Diastereomeric Salt Formation with Tartaric Acid Stereoisomers. Chemistry 2024; 30:e202401956. [PMID: 38880769 DOI: 10.1002/chem.202401956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2024] [Revised: 06/12/2024] [Accepted: 06/13/2024] [Indexed: 06/18/2024]
Abstract
Herein, we designed a chiral, axially-twisted molecular scaffold (ATMS) using pyridine-2,6-dicarboxamide (PDC) unit as pivot, chiral trans-cyclohexanediamine (CHDA) residues as linkers, and pyrene residues as fluorescent reporters. R,R-ATMS exclusively adopted M-helicity and produced differential response in UV-vis, fluorescence, and NMR upon addition of tartaric acid (TA) stereoisomers allowing naked-eye detection and enantiomeric content determination. Circular dichroism (CD) profile of R,R-ATMS underwent unique changes during titration with TA stereoisomers - while loss of CD signal at 345 nm was observed with equimolar D-TA and meso-TA, inversion was seen with equimolar L-TA. Temperature increase weakened these interactions to partially recover the original CD signature of R,R-ATMS. 2D NMR studies also indicated the significant structural changes in R,R-ATMS in the solution state upon addition of L-TA. Single crystal X-ray diffraction (SCXRD) studies on the crystals of the R,R-ATMS⊃D-TA salt revealed the interacting partners stacked in arrays and ATMS molecules stabilized by π-π stacking between its PDC and pyrene residues. Contrastingly, tightly-packed supramolecular cages comprised of four molecules each of R,R-ATMS and L-TA were seen in R,R-ATMS⊃L-TA salt, and the ATMS molecules contorted to achieve CH-π interactions between its pyrene residues. These results may have implications in modulating the helicity of topologically-similar larger biomolecules.
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Affiliation(s)
- Akash Kumar Sharma
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal (IISER Bhopal), Bhopal Bypass Road, 462066, Bhauri, Bhopal, India
| | - Shubham Som
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal (IISER Bhopal), Bhopal Bypass Road, 462066, Bhauri, Bhopal, India
| | - Deepak Chopra
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal (IISER Bhopal), Bhopal Bypass Road, 462066, Bhauri, Bhopal, India
| | - Aasheesh Srivastava
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal (IISER Bhopal), Bhopal Bypass Road, 462066, Bhauri, Bhopal, India
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4
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Jia Y, Wu W, Chen R, Wang H, Zhang C, Chen L, Yao J. Magneto-electrochemical method for chiral recognition of amino acid enantiomers. Analyst 2024; 149:3732-3738. [PMID: 38842499 DOI: 10.1039/d4an00547c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2024]
Abstract
Chiral recognition of enantiomers with identical mirror-symmetric molecular structures is important for the analysis of biomolecules, and it conventionally relies on stereoselective interactions in chiral chemical environments. Here, we develop a magneto-electrochemical method for the enhanced detection of chiral amino acids (AAs), that combines the advantages of the high sensitivity of electrochemiluminescent (ECL) biosensors and chirality-induced effects under a magnetic field. The ECL difference between L- and D-enantiomers can be amplified over 35-fold under a field of 3.5 kG, and the chiral discrimination can be achieved in dilute AA solutions down to the nM level. The field-dependent ECL and chronocoulometry measurements suggest that chiral AAs can lock the spins on their radicals and thus enlarge the ECL change under applied magnetic fields (magneto-ECL, MECL), which explains the field-enhanced chiral discrimination of AA enantiomers. Finally, a detailed protocol is demonstrated for the identification of unknown AA solutions, in which the species, chirality and concentration of AAs can be determined simultaneously from the 2D plots of the ECL and MECL results. This work benefits the development of field-assisted detection methods and represents a promising and universal strategy for the comprehensive analysis of chiral biomolecules.
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Affiliation(s)
- Yueqian Jia
- Key Laboratory of Photochemistry, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Wubin Wu
- Key Laboratory of Photochemistry, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
| | - Rui Chen
- Key Laboratory of Photochemistry, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
| | - Hong Wang
- Key Laboratory of Photochemistry, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chuang Zhang
- Key Laboratory of Photochemistry, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
| | - Lili Chen
- Key Laboratory of Photochemistry, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
| | - Jiannian Yao
- Key Laboratory of Photochemistry, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
- Institute of Molecular Engineering Plus, Fuzhou University, Fuzhou 350108, China
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5
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Formen JSSK, Howard JR, Anslyn EV, Wolf C. Circular Dichroism Sensing: Strategies and Applications. Angew Chem Int Ed Engl 2024; 63:e202400767. [PMID: 38421186 DOI: 10.1002/anie.202400767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Revised: 02/23/2024] [Accepted: 02/28/2024] [Indexed: 03/02/2024]
Abstract
The analysis of the absolute configuration, enantiomeric composition, and concentration of chiral compounds are frequently encountered tasks across the chemical and health sciences. Chiroptical sensing methods can streamline this work and allow high-throughput screening with remarkable reduction of operational time and cost. During the last few years, significant methodological advances with innovative chirality sensing systems, the use of computer-generated calibration curves, machine learning assistance, and chemometric data processing, to name a few, have emerged and are now matched with commercially available multi-well plate CD readers. These developments have reframed the chirality sensing space and provide new opportunities that are of interest to a large group of chemists. This review will discuss chirality sensing strategies and applications with representative small-molecule CD sensors. Emphasis will be given to important milestones and recent advances that accelerate chiral compound analysis by outperforming traditional methods, conquer new directions, and pioneering efforts that lie at the forefront of chiroptical high-throughput screening developments. The goal is to provide the reader with a thorough understanding of the current state and a perspective of future directions of this rapidly emerging field.
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Affiliation(s)
| | - James R Howard
- Chemistry Department, University of Texas at Austin, Austin TX, USA
| | - Eric V Anslyn
- Chemistry Department, University of Texas at Austin, Austin TX, USA
| | - Christian Wolf
- Chemistry Department, Georgetown University, Washington DC, USA
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6
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Tan L, Cai W, Wang F, Li J, Wu D, Kong Y. Postsynthetic Modification Strategy for Constructing Electrochemiluminescence-Active Chiral Covalent Organic Frameworks Performing Efficient Enantioselective Sensing. Anal Chem 2024; 96:3942-3950. [PMID: 38394220 DOI: 10.1021/acs.analchem.3c05887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2024]
Abstract
Electrochemiluminescence (ECL), integrating the characteristics of electrochemistry and fluorescence, has the advantages of high sensitivity and low background. However, only a few studies have been reported for enantioselective sensing based on the ECL-active platform because of the huge challenges in constructing tunable chiral ECL luminophores. Here, we developed a facile strategy to design and prepare ECL-active chiral covalent organic frameworks (COFs) Ph-triPy+-(R)-Ru(II) for enantioselective sensing. In such an artificial structure, the ionic skeleton of COFs was beneficial to the electron transfer on the working electrode surface and the chiral Ru-ligand was used as the chiral ECL-active luminophore. It was found that Ph-triPy+-(R)-Ru(II) coupled with sodium persulfate (Na2S2O8) as the coreactant exhibited obvious ECL signals. More importantly, a clear difference toward l- and d-enantiomers was observed in the response of the ECL intensity, resulting in a uniform recognition law. That is, for amino alcohols, d-enantiomers (1 mM) measured by Ph-triPy+-(R)-Ru(II) showed a higher ECL intensity compared with l-enantiomers. Differently, amino acids (1 mM) gave an inverse recognition phenomenon. The ECL intensity ratios between l- and d-enantiomers (1 mM) are in the range of 1.25-1.94 for serine, aspartic acid, glutamic acid, valine, leucine, leucinol, and valinol. What is more interesting is that the ECL intensity was closely related to the concentration of l-amino alcohols and d-amino acids, whereas their inverse configurations remained unchanged. In a word, the present concept demonstrates a feasible direction toward chiral ECL-active COFs and their potential for efficient enantioselective sensing.
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Affiliation(s)
- Lilan Tan
- Jiangsu Key Laboratory of Advanced Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
| | - Wenrong Cai
- Jiangsu Key Laboratory of Advanced Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
| | - Fangqin Wang
- Jiangsu Key Laboratory of Advanced Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
| | - Junyao Li
- Jiangsu Key Laboratory of Advanced Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
| | - Datong Wu
- Jiangsu Key Laboratory of Advanced Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
| | - Yong Kong
- Jiangsu Key Laboratory of Advanced Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
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7
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Essien NB, Galvácsi A, Kállay C, Al-Hilaly Y, González-Méndez R, Akien GR, Tizzard GJ, Coles SJ, Besora M, Kostakis GE. Fluorine-based Zn salan complexes. Dalton Trans 2023; 52:4044-4057. [PMID: 36880418 DOI: 10.1039/d2dt04082d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
Abstract
We synthesised and characterised the racemic and chiral versions of two Zn salan fluorine-based complexes from commercially available materials. The complexes are susceptible to absorbing H2O from the atmosphere. In solution (DMSO-H2O) and at the millimolar level, experimental and theoretical studies identify that these complexes exist in a dimeric-monomeric equilibrium. We also investigated their ability to sense amines via19F NMR. In CDCl3 or d6-DMSO, strongly coordinating molecules (H2O or DMSO) are the limiting factor in using these easy-to-make complexes as chemosensory platforms since their exchange with analytes requires an extreme excess of the latter.
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Affiliation(s)
- Nsikak B Essien
- Department of Chemistry, School of Life Sciences, University of Sussex, Brighton BN1 9QJ, UK.
| | - Antal Galvácsi
- Department of Inorganic and Analytical Chemistry, University of Debrecen, H-4032 Debrecen, Hungary
| | - Csilla Kállay
- Department of Inorganic and Analytical Chemistry, University of Debrecen, H-4032 Debrecen, Hungary
| | - Youssra Al-Hilaly
- Sussex Neuroscience, School of Life Sciences, University of Sussex, Brighton BN1 9QG, UK.,Chemistry Department, College of Science, Mustansiriyah University, Baghdad, Iraq
| | - Ramón González-Méndez
- Department of Chemistry, School of Life Sciences, University of Sussex, Brighton BN1 9QJ, UK.
| | - Geoffrey R Akien
- Department of Chemistry, Lancaster University, Lancaster LA1 4YB, UK
| | - Graham J Tizzard
- UK National Crystallography Service, Chemistry, University of Southampton, Southampton SO1 71BJ, UK
| | - Simon J Coles
- UK National Crystallography Service, Chemistry, University of Southampton, Southampton SO1 71BJ, UK
| | - Maria Besora
- Departament de Química Física i Inorgànica, Universitat Rovira i Virgili, C/Marcel lí Domingo, 1, 43007 Tarragona, Spain.
| | - George E Kostakis
- Department of Chemistry, School of Life Sciences, University of Sussex, Brighton BN1 9QJ, UK.
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8
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Audsley G, Carpenter H, Essien NB, Lai-Morrice J, Al-Hilaly Y, Serpell LC, Akien GR, Tizzard GJ, Coles SJ, Ulldemolins CP, Kostakis GE. Chiral Co 3Y Propeller-Shaped Chemosensory Platforms Based on 19F-NMR. Inorg Chem 2023; 62:2680-2693. [PMID: 36716401 PMCID: PMC9930122 DOI: 10.1021/acs.inorgchem.2c03737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Two propeller-shaped chiral CoIII3YIII complexes built from fluorinated ligands are synthesized and characterized by single-crystal X-ray diffraction (SXRD), IR, UV-vis, circular dichroism (CD), elemental analysis, thermogravimetric analysis (TGA), electron spray ionization mass spectroscopy (ESI-MS), and NMR (1H, 13C, and 19F). This work explores the sensing and discrimination abilities of these complexes, thus providing an innovative sensing method using a 19F NMR chemosensory system and opening new directions in 3d/4f chemistry. Control experiments and theoretical studies shed light on the sensing mechanism, while the scope and limitations of this method are discussed and presented.
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Affiliation(s)
- Gabrielle Audsley
- Department
of Chemistry, School of Life Sciences, University
of Sussex, Brighton BN1 9QJ, UK
| | - Harry Carpenter
- Department
of Chemistry, School of Life Sciences, University
of Sussex, Brighton BN1 9QJ, UK
| | - Nsikak B. Essien
- Department
of Chemistry, School of Life Sciences, University
of Sussex, Brighton BN1 9QJ, UK
| | - James Lai-Morrice
- Department
of Chemistry, School of Life Sciences, University
of Sussex, Brighton BN1 9QJ, UK
| | - Youssra Al-Hilaly
- Sussex
Neuroscience, School of Life Sciences, University
of Sussex, Brighton BN1 9QG, UK,Chemistry
Department, College of Science, Mustansiriyah
University, Baghdad 10001, Iraq
| | - Louise C. Serpell
- Sussex
Neuroscience, School of Life Sciences, University
of Sussex, Brighton BN1 9QG, UK
| | - Geoffrey R. Akien
- Department
of Chemistry, Lancaster University, Lancaster LA1 4YB, UK
| | - Graham J. Tizzard
- UK
National Crystallography Service, Chemistry, University of Southampton, Southampton SO1 71BJ, UK
| | - Simon J. Coles
- UK
National Crystallography Service, Chemistry, University of Southampton, Southampton SO1 71BJ, UK
| | | | - George E. Kostakis
- Department
of Chemistry, School of Life Sciences, University
of Sussex, Brighton BN1 9QJ, UK,
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9
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Li W, Zhou Y, Gao T, Li J, Yin S, Huang W, Li Y, Ma Q, Yao Z, Yan P, Li H. Circularly Polarized Luminescent Eu 4( LR) 4 Cage for Enantiomeric Excess and Concentration Simultaneous Determination of Chiral Diamines. ACS APPLIED MATERIALS & INTERFACES 2022; 14:55979-55988. [PMID: 36472626 DOI: 10.1021/acsami.2c17967] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Undoubtably, it is challenging to simultaneously determine the identity, enantiomeric excess (ee), and total concentration of an enantiomer by just one optical measurement. Herein, we design a chiral tetrahedron Eu4(LR)4 with circularly polarized luminescence (CPL), which presents highly selective/stereoselective, rapid, and "turn-on" CPL response to chiral diamines, rather than the monoamino compounds, such as monoamines or amino alcohols. By recording the left- and right-CPL intensities of the Eu3+ ion at 591 nm, the enantiomeric composition and concentration of chiral diamines can be simultaneously determined by monitoring the glum value and total emission intensity (IL + IR), respectively. Spectroscopy analyses demonstrate that the variations of glum depend on the inversion and maintenance of configuration around the Eu3+ ion (Δ ↔ Λ), while the "turn-on" response arises from the raising of the T1 state of the ligand. The molecule/electron structural variations are proposed from the synergetic supramolecular interactions of NH2 groups with pendant diols and trifluoroacetyl groups.
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Affiliation(s)
- Wenwen Li
- School of Chemistry and Materials Science, Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, Heilongjiang University, 74 Xuefu Road, Harbin 150080, China
| | - Yanyan Zhou
- School of Chemistry and Materials Science, Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, Heilongjiang University, 74 Xuefu Road, Harbin 150080, China
| | - Ting Gao
- School of Chemistry and Materials Science, Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, Heilongjiang University, 74 Xuefu Road, Harbin 150080, China
| | - Jingya Li
- State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization Institution, Baotou 014030, China
| | - Sen Yin
- School of Chemistry and Materials Science, Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, Heilongjiang University, 74 Xuefu Road, Harbin 150080, China
| | - Wenru Huang
- School of Chemistry and Materials Science, Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, Heilongjiang University, 74 Xuefu Road, Harbin 150080, China
| | - Yuying Li
- School of Chemistry and Materials Science, Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, Heilongjiang University, 74 Xuefu Road, Harbin 150080, China
| | - Qing Ma
- School of Chemistry and Materials Science, Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, Heilongjiang University, 74 Xuefu Road, Harbin 150080, China
| | - Zhiwei Yao
- School of Chemistry and Materials Science, Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, Heilongjiang University, 74 Xuefu Road, Harbin 150080, China
| | - Pengfei Yan
- School of Chemistry and Materials Science, Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, Heilongjiang University, 74 Xuefu Road, Harbin 150080, China
| | - Hongfeng Li
- School of Chemistry and Materials Science, Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, Heilongjiang University, 74 Xuefu Road, Harbin 150080, China
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10
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Tian J, Jiang YX, Yu XQ, Yu SS. Rapid chiral assay of amino compounds using diethyl squarate. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 272:120871. [PMID: 35151169 DOI: 10.1016/j.saa.2022.120871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 01/05/2022] [Accepted: 01/06/2022] [Indexed: 06/14/2023]
Abstract
The versatility and importance of chiral compounds make it urgent to develop fast and efficient methods to detect the absolute configuration, enantiomeric excess(ee), and concentration of chiral compounds. In this study, we demonstrate that commercially available diethyl squarate can rapidly react with various types of chiral amino compounds and exhibit characteristic ultraviolet (UV) and circular dichroism (CD) signals. The UV and CD signals can determine the total concentration of the two enantiomers and ee value of the sample, respectively. The probe showed a broad substrate scope, applicable to 39 tested chiral amino compounds, including chiral amino acids, amino alcohols, and amines. Additionally, the probe accurately detected 10 samples of phenylalanine, phenylglycinol, and phenethylamine with the error range less than 8%, demonstrating the practicability of this method.
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Affiliation(s)
- Jun Tian
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry Sichuan University, 29, Wangjiang Road, Chengdu, Sichuan Province 610064, China
| | - Yi-Xuan Jiang
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry Sichuan University, 29, Wangjiang Road, Chengdu, Sichuan Province 610064, China
| | - Xiao-Qi Yu
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry Sichuan University, 29, Wangjiang Road, Chengdu, Sichuan Province 610064, China.
| | - Shan-Shan Yu
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry Sichuan University, 29, Wangjiang Road, Chengdu, Sichuan Province 610064, China.
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11
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Sripada A, Thanzeel FY, Wolf C. Unified sensing of the concentration and enantiomeric composition of chiral compounds with an achiral probe. Chem 2022. [DOI: 10.1016/j.chempr.2022.03.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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12
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Liu C, Yang JC, Lam JWY, Feng HT, Tang BZ. Chiral assembly of organic luminogens with aggregation-induced emission. Chem Sci 2022; 13:611-632. [PMID: 35173927 PMCID: PMC8771491 DOI: 10.1039/d1sc02305e] [Citation(s) in RCA: 49] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Accepted: 05/24/2021] [Indexed: 12/21/2022] Open
Abstract
Chirality is important to chemistry, biology and optoelectronic materials. The study on chirality has lasted for more than 170 years since its discovery. Recently, chiral materials with aggregation-induced emission (AIE) have attracted increasing interest because of their fascinating photophysical properties. In this review, we discussed the recent development of chiral materials with AIE properties, including their molecular structures, self-assembly and functions. Generally, the most effective strategy to design a chiral AIE luminogen (AIEgen) is to attach a chiral scaffold to an AIE-active fluorophore through covalent bonds. Moreover, some propeller-like or shell-like AIEgens without chiral units exhibit latent chirality upon mirror image symmetry breaking. The chirality of achiral AIEgens can also be induced by some optically active molecules through non-covalent interactions. The introduction of an AIE unit into chiral materials can enhance the efficiency of their circularly polarized luminescence (CPL) in the solid state and the dissymmetric factors of their helical architectures formed through self-assembly. Thus, highly efficient circularly polarized organic light-emitting diodes (CPOLEDs) with AIE characteristics are developed and show great potential in 3D displays. Chiral AIEgens are also widely utilized as "turn on" sensors for rapid enantioselective determination of chiral reagents. It is anticipated that the present review can entice readers to realize the importance of chirality and attract much more chemists to contribute their efforts to chirality and AIE study.
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Affiliation(s)
- Chenchen Liu
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Institute for Advanced Study and Department of Chemical and Biomedical Engineering, The Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong China
| | - Jun-Cheng Yang
- AIE Research Center, Shaanxi Key Laboratory of Phytochemistry, College of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences Baoji 721013 China
| | - Jacky W Y Lam
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Institute for Advanced Study and Department of Chemical and Biomedical Engineering, The Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong China
| | - Hai-Tao Feng
- AIE Research Center, Shaanxi Key Laboratory of Phytochemistry, College of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences Baoji 721013 China
| | - Ben Zhong Tang
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Institute for Advanced Study and Department of Chemical and Biomedical Engineering, The Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong China
- State Key Laboratory of Luminescent Materials and Devices, SCUT-HKUST Joint Research Institute, Center for Aggregation-Induced Emission China
- AIE Institute Guangzhou Development District Guangzhou 510530 China
- Shenzhen Institute of Aggregate Science and Technology, School of Science and Engineering, The Chinese University of Hong Kong Shenzhen Guangdong 518172 China
- Guangdong-Hong Kong-Macau Joint Laboratory of Optoelectronic and Magnetic Functional Materials China
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13
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Mobili R, Preda G, La Cognata S, Toma L, Pasini D, Amendola V. Chiroptical sensing of perrhenate in aqueous media by a chiral organic cage. Chem Commun (Camb) 2022; 58:3897-3900. [DOI: 10.1039/d2cc00612j] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A chiral cage is proposed as an effective chiroptical sensor for perrhenate (surrogate for 99TcO4-) in water, fruit juice and artificial urine medium. The key mechanism for the chiroptical sensing...
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14
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Omasa K, Ito M, Kubo Y. Zn( ii)-coordination-driven chiroptical and emissive sensing for chiral amines using a quaterphenyl-5′-carbaldehyde. NEW J CHEM 2022. [DOI: 10.1039/d2nj04781k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The formation of an imine between 1 and chiral amine analyte enabled Zn(ii)-assisted CD response, fluorescence and CPL signals.
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Affiliation(s)
- Koichiro Omasa
- Department of Applied Chemistry, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji, Tokyo, 192-0397, Japan
| | - Masato Ito
- Department of Applied Chemistry, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji, Tokyo, 192-0397, Japan
| | - Yuji Kubo
- Department of Applied Chemistry, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji, Tokyo, 192-0397, Japan
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15
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De Silva EH, Novak BM. Temperature induced helical contraction and expansion in branched polycarbodiimides and their solvent vapor sensing properties. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2021. [DOI: 10.1080/10601325.2021.1978849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Enosha Harshani De Silva
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, Richardson, Texas, USA
| | - Bruce M. Novak
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, Richardson, Texas, USA
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16
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Zong Z, Zhang H, Hao A, Xing P. The origin of supramolecular chirality in 1-ferrocenyl amino acids. Dalton Trans 2021; 50:9695-9699. [PMID: 34250534 DOI: 10.1039/d1dt01905h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
π-Conjugated amino acids are widely applied in chiroptical materials, in which chiroptical activities are believed to originate from supramolecular packing. However, the intramolecular contribution has been largely ignored. In this work, we report that intramolecular chirality transfer behaviors in ferrocene-conjugated amino acids depend on the substituent groups, which influence the modality of multiple intramolecular interactions, as well as the molecular geometry. The structural basis and structure-property relationships of chirality and chiroptical activities were unveiled in this work. Based on single crystal structure and density functional theory calculations, we demonstrate that intramolecular weak forces, including hydrogen bonds, CHπ interactions and van der Waals interactions, affect the molecular geometry and contribute to diverse Cotton effects. This work provides evidence for the ignored intramolecular factors in self-assembled systems and paves the way for the fabrication of functional chiroptical systems.
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Affiliation(s)
- Zhaohui Zong
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, PR China.
| | - Heng Zhang
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, PR China.
| | - Aiyou Hao
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, PR China.
| | - Pengyao Xing
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, PR China.
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17
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Nelson E, Formen JSSK, Wolf C. Rapid organocatalytic chirality analysis of amines, amino acids, alcohols, amino alcohols and diols with achiral iso(thio)cyanate probes. Chem Sci 2021; 12:8784-8790. [PMID: 34257878 PMCID: PMC8246279 DOI: 10.1039/d1sc02061g] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Accepted: 05/24/2021] [Indexed: 12/03/2022] Open
Abstract
The widespread occurrence and significance of chiral compounds does not only require new methods for their enantioselective synthesis but also efficient tools that allow rapid determination of the absolute configuration, enantiomeric composition and overall concentration of nonracemic mixtures. Although chiral analysis is a frequently encountered challenge in the chemical, environmental, materials and health sciences it is typically addressed with slow and laborious chromatographic or NMR spectroscopic techniques. We now show with almost 40 analytes representing 5 different compound classes, including mono-alcohols which are particularly challenging sensing targets, that this task can be solved very quickly by chiroptical sensing with a single, readily available arylisocyanate probe. The probe reacts smoothly and irreversibly with amino and alcohol groups when an organocatalyst is used at room temperature toward urea or carbamate products exhibiting characteristic UV and CD signals above 300 nm. The UV signal induction is not enantioselective and correlated to the total concentration of both enantiomers, the concomitant generation of a CD band allows determination of the enantiomeric composition from the same sample, and the sense of the induced Cotton effect reveals the absolute configuration by comparison with a reference. This approach eliminates complications that can arise when enantiomerically impure NMR derivatizing agents are used and it outperforms time-consuming HPLC protocols. The generation of distinct UV and CD signals at high wavelengths overcomes issues with insufficient resolution of overlapping signals often encountered with chiral NMR solvating agents that rely on weak binding forces. The broad solvent compatibility is another noteworthy and important characteristic of this assay. It addresses frequently encountered problems with insufficient solubility of polar analytes, for example pharmaceuticals, in standard mobile phase mixtures required for chiral HPLC analysis. We anticipate that the broad application spectrum, ruggedness and practicality of organocatalytic chiroptical sensing with aryliso(thio)cyanate probes together with the availability of automated CD multi-well plate readers carry exceptional promise to accelerate chiral compound development projects at reduced cost and with less waste production. Organocatalysis with a simple arylisocyanate probe enables accelerated optical concentration and enantiomeric ratio determination of a large variety of chiral compounds based on straightforward UV/CD analysis.![]()
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Affiliation(s)
- Eryn Nelson
- Department of Chemistry, Georgetown University Washington DC 20057 USA
| | | | - C Wolf
- Department of Chemistry, Georgetown University Washington DC 20057 USA
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18
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Agnes M, Arabi A, Caricato M, Nitti A, Dondi D, Yannakopoulou K, Patrini M, Pasini D. Helical Nanofibers Formed by Palladium-Mediated Assembly of Organic Homochiral Macrocycles Containing Binaphthyl and Pyridyl Units. Chempluschem 2021; 86:270-274. [PMID: 33565730 DOI: 10.1002/cplu.202100039] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 02/04/2021] [Indexed: 11/05/2022]
Abstract
Herein, we report the synthesis and characterization of homochiral macrocycles, in which molecular rigidity, combined with the presence of multiple functional groups, allow for the assembly of helical nanostructures. 1,1'-bi-2-naphthol (Binol) units are used as robust chirality inducers, and pyridyl units embedded within the molecular frameworks allow the assembly, upon coordination with Pd(II) metal ions, of the macrocyclic building blocks. CD and NMR spectroscopies show the formation of ordered 1D assembly in solution. AFM studies indicate that the molecular systems are capable of forming nanoscale structures. The effective transfer of chiral information results in helical nanofibers, with lengths ranging from a few hundreds of nanometers to some micrometers. AFM line profiles reveal a helical longitudinal period of about 50 nm and a transverse width of 25 to 45 nm after deconvolution.
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Affiliation(s)
- Marco Agnes
- Department of Chemistry and INSTM Research Unit, University of Pavia, Via Taramelli 12, 27100, Pavia, Italy.,Institute of Nanoscience and Nanotechnology, National Center for Scientific Research "Demokritos", Patr. Grigoriou E' & 27 Neapoleos str., 15341, Agia Paraskevi, Greece
| | - Ameneh Arabi
- Department of Chemistry and INSTM Research Unit, University of Pavia, Via Taramelli 12, 27100, Pavia, Italy
| | - Marco Caricato
- Department of Chemistry and INSTM Research Unit, University of Pavia, Via Taramelli 12, 27100, Pavia, Italy
| | - Andrea Nitti
- Department of Chemistry and INSTM Research Unit, University of Pavia, Via Taramelli 12, 27100, Pavia, Italy
| | - Daniele Dondi
- Department of Chemistry and INSTM Research Unit, University of Pavia, Via Taramelli 12, 27100, Pavia, Italy
| | - Konstantina Yannakopoulou
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Research "Demokritos", Patr. Grigoriou E' & 27 Neapoleos str., 15341, Agia Paraskevi, Greece
| | - Maddalena Patrini
- Department of Physics, University of Pavia, Via Bassi 6, 27100, Pavia, Italy
| | - Dario Pasini
- Department of Chemistry and INSTM Research Unit, University of Pavia, Via Taramelli 12, 27100, Pavia, Italy
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19
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Li B, Zhang J, Li L, Chen G. A rapid and sensitive method for chiroptical sensing of α-amino acids via click-like labeling with o-phthalaldehyde and p-toluenethiol. Chem Sci 2020; 12:2504-2508. [PMID: 34164017 PMCID: PMC8179345 DOI: 10.1039/d0sc05749e] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A highly practical method for comprehensive chiroptical sensing of free α amino acids with streamlined operation and high sensitivity via dual CD/UV measurements is developed. The assay takes advantage of an efficient and selective three-component labeling reaction of primary amines with o-phthalaldehyde and p-toluenethiol reagents to derivatize the NH2 group of analytes into an isoindole. The covalent labeling generates sensitive UV and CD readouts, both of which show an excellent linear relationship with the concentration of analytes. The high reactivity and the novel optical reporting mechanism allow fast and accurate measurement without background interference. The sensing assay works well for a remarkably broad range of analyte concentrations, with an unprecedented lower limit of 10 micromolar concentration. A highly practical method for comprehensive chiroptical sensing of free α amino acids with streamlined operation and high sensitivity via dual CD/UV measurements is developed.![]()
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Affiliation(s)
- Bo Li
- Beijing Key Laboratory of Active Substances Discovery and Druggability Evaluation, Institute of Materia Medica, Chinese Academy of Medical Sciences, Peking Union Medical College Beijing 100050 China .,State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University Tianjin 300071 China
| | - Jie Zhang
- Beijing Key Laboratory of Active Substances Discovery and Druggability Evaluation, Institute of Materia Medica, Chinese Academy of Medical Sciences, Peking Union Medical College Beijing 100050 China
| | - Li Li
- Beijing Key Laboratory of Active Substances Discovery and Druggability Evaluation, Institute of Materia Medica, Chinese Academy of Medical Sciences, Peking Union Medical College Beijing 100050 China
| | - Gong Chen
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University Tianjin 300071 China
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20
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Shirbhate ME, Kwon S, Song A, Kim S, Kim D, Huang H, Kim Y, Lee H, Kim SJ, Baik MH, Yoon J, Kim KM. Optical and Fluorescent Dual Sensing of Aminoalcohols by in Situ Generation of BODIPY-like Chromophore. J Am Chem Soc 2020; 142:4975-4979. [DOI: 10.1021/jacs.9b13232] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Mukesh Eknath Shirbhate
- Department of Chemistry & Nanosciences (BK21 Plus), Ewha Womans University, Seoul 03760, Korea
| | - Seongyeon Kwon
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, Korea
| | - Ayoung Song
- Department of Chemistry & Nanosciences (BK21 Plus), Ewha Womans University, Seoul 03760, Korea
| | - Seungha Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, Korea
| | - Dayeh Kim
- Department of Chemistry & Nanosciences (BK21 Plus), Ewha Womans University, Seoul 03760, Korea
| | - Haofei Huang
- College of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255049, China
| | - Youngmee Kim
- Department of Chemistry & Nanosciences (BK21 Plus), Ewha Womans University, Seoul 03760, Korea
| | - Hanna Lee
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, Korea
| | - Sung-Jin Kim
- Department of Chemistry & Nanosciences (BK21 Plus), Ewha Womans University, Seoul 03760, Korea
| | - Mu-Hyun Baik
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, Korea
| | - Juyoung Yoon
- Department of Chemistry & Nanosciences (BK21 Plus), Ewha Womans University, Seoul 03760, Korea
| | - Kwan Mook Kim
- Department of Chemistry & Nanosciences (BK21 Plus), Ewha Womans University, Seoul 03760, Korea
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21
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Hassan DS, Thanzeel FY, Wolf C. Stereochemical analysis of chiral amines, diamines, and amino alcohols: Practical chiroptical sensing based on dynamic covalent chemistry. Chirality 2020; 32:457-463. [PMID: 32027416 DOI: 10.1002/chir.23185] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Revised: 01/09/2020] [Accepted: 01/10/2020] [Indexed: 12/26/2022]
Abstract
Practical chiroptical sensing with a small group of commercially available aromatic aldehydes is demonstrated. Schiff base formation between the electron-deficient 2,4-dinitrobenzaldehyde probe and either primary amines, diamines, or amino alcohols proceeds smoothly in chloroform at room temperature and is completed in the presence of molecular sieves within 2.5 hours. The substrate binding coincides with a distinct circular dichroism signal induction at approximately 330 nm, which can be correlated to the absolute configuration and enantiomeric composition of the analyte. The usefulness of this sensing method is highlighted with the successful sensing of 18 aliphatic and aromatic amines and amino alcohols and five examples showing quantitative %ee determination with good accuracy.
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Affiliation(s)
- Diandra S Hassan
- Department of Chemistry, Georgetown University, Washington, D.C., USA
| | - F Yushra Thanzeel
- Department of Chemistry, Georgetown University, Washington, D.C., USA
| | - Christian Wolf
- Department of Chemistry, Georgetown University, Washington, D.C., USA
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22
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Chen H, Ye H, Hai Y, Zhang L, You L. n → π* interactions as a versatile tool for controlling dynamic imine chemistry in both organic and aqueous media. Chem Sci 2020; 11:2707-2715. [PMID: 34084329 PMCID: PMC8157614 DOI: 10.1039/c9sc05698j] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Accepted: 01/31/2020] [Indexed: 11/21/2022] Open
Abstract
The imine bond holds a prominent place in supramolecular chemistry and materials science, and one issue is the stability of imines due to their electrophilic nature. Here we introduced ortho-carboxylate groups into a series of aromatic aldehydes/imines for dictating imine dynamic covalent chemistry (DCC) through n → π* interactions, one class of widespread and yet underused non-covalent interactions. The thermodynamically stabilizing role of carboxylate-aldehyde/imine n → π* interactions in acetonitrile was elucidated by the movement of the imine exchange equilibrium and further supported by crystal analysis. Computational studies provided mechanistic insights for n → π* interactions, the strength of which can surpass that of CH hydrogen bonding and is dependent on the orientation of interacting sites based on natural bond orbital analysis. Moreover, the substituent effect and the combination of recognition sites allowed additional means for modulation. Finally, to show the relevance of our findings ortho-carboxylate containing aldehydes were used to regulate imine formation/exchange in water, and modification of the N-terminus of amino acids and peptides was achieved in a neutral buffer. This work represents the latest example of weak interactions governing DCC and sets the stage for assembly and application studies.
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Affiliation(s)
- Hang Chen
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences Fuzhou 350002 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Hebo Ye
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences Fuzhou 350002 China
| | - Yu Hai
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences Fuzhou 350002 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Ling Zhang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences Fuzhou 350002 China
| | - Lei You
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences Fuzhou 350002 China
- University of Chinese Academy of Sciences Beijing 100049 China
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23
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Binaphthyl-Based Macrocycles as Optical Sensors for Aromatic Diphenols. Molecules 2020; 25:molecules25030514. [PMID: 31991660 PMCID: PMC7038072 DOI: 10.3390/molecules25030514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2019] [Revised: 01/19/2020] [Accepted: 01/20/2020] [Indexed: 11/16/2022] Open
Abstract
The synthesis of several rigid, homochiral organic macrocycles possessing, respectively, average molecular D2 and D3 symmetries, is described. They have been obtained from aromatic dicarboxylic acids, in combination with an axially-chiral, suitable dibenzylic alcohol, derived from 1,1'-binaphthyl-2,2'-diol (BINOL) using one-pot esterification reactions in good isolated yields. NMR and circular dichroism (CD) spectroscopies detect the structural and shape variability in the scaffolds, reflected both in terms of the changes in chemical shifts and the shape of selected proton resonances, and in terms of the variation of the CD signature related to the dihedral angle defined by the binaphthyl units embedded in the rigid cyclic skeleton. The D2 cyclic adducts are able to form stable complexes with aromatic diphenols, with binding strengths that are dependent on small variations in the spacing units, and therefore on the shapes of the internal cavities of the cyclic structures.
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24
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Jin Q, Wang F, Chen S, Zhou L, Jiang H, Zhang L, Liu M. Circularly Polarized Luminescence of Aluminum Complexes for Chiral Sensing of Amino Acid and Amino Alcohol. Chem Asian J 2019; 15:319-324. [PMID: 31825169 DOI: 10.1002/asia.201901480] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Revised: 12/06/2019] [Indexed: 11/06/2022]
Abstract
Determination of the absolute configuration (AC) of chiral molecules is a key issue in many fields related to chirality such as drug development, the asymmetric reaction screening, and the structure determination of natural compounds. Although various methods, such as X-ray crystallography and NMR spectroscopy, are used to determine the AC, a simple and cheap alternative method is always anticipated. So far, electronic circular dichroism (ECD) spectroscopy has been widely used to ascertain the AC and enantiomeric excess (ee) values by applying appropriate organic probes. Here, circularly polarized luminescence (CPL) spectroscopy was applied to determine the AC and ee values of a series of amino acid and amino alcohol. The measurements were conducted by mixing the amino acids or amino alcohols with an achiral 1-hydroxy-2-naphthaldehyde. Upon in situ formation of the Schiff base complexes, the system showed emission enhancement and CPL in the presence of Al3+ , whose intensity and sign can be used to assign the chiral sense of the amino acids and amino alcohols. The authenticity of the method was further compared with the established CD spectroscopy, revealing that CPL spectra of formed Al3+ complex were effective to determine the AC of chiral species.
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Affiliation(s)
- Qingxian Jin
- Henan Provincial Key Laboratory of Surface and Interface Science, Zhengzhou University of Light Industry, Zhengzhou, Henan, 450002, P. R. China
| | - Fulin Wang
- Henan Provincial Key Laboratory of Surface and Interface Science, Zhengzhou University of Light Industry, Zhengzhou, Henan, 450002, P. R. China.,Beijing National Laboratory for Molecular Science, CAS Key Laboratory of Colloid Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Shuyu Chen
- Henan Provincial Key Laboratory of Surface and Interface Science, Zhengzhou University of Light Industry, Zhengzhou, Henan, 450002, P. R. China
| | - Liming Zhou
- Henan Provincial Key Laboratory of Surface and Interface Science, Zhengzhou University of Light Industry, Zhengzhou, Henan, 450002, P. R. China
| | - Hejin Jiang
- Beijing National Laboratory for Molecular Science, CAS Key Laboratory of Colloid Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Li Zhang
- Beijing National Laboratory for Molecular Science, CAS Key Laboratory of Colloid Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Minghua Liu
- Beijing National Laboratory for Molecular Science, CAS Key Laboratory of Colloid Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
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25
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De los Santos ZA, MacAvaney S, Russell K, Wolf C. Tandem Use of Optical Sensing and Machine Learning for the Determination of Absolute Configuration, Enantiomeric and Diastereomeric Ratios, and Concentration of Chiral Samples. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201912904] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
| | - Sean MacAvaney
- Department of Computer Science Georgetown University Washington DC 20057 USA
| | - Katina Russell
- Department of Computer Science Georgetown University Washington DC 20057 USA
| | - Christian Wolf
- Department of Chemistry Georgetown University Washington DC 20057 USA
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26
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De Los Santos ZA, MacAvaney S, Russell K, Wolf C. Tandem Use of Optical Sensing and Machine Learning for the Determination of Absolute Configuration, Enantiomeric and Diastereomeric Ratios, and Concentration of Chiral Samples. Angew Chem Int Ed Engl 2019; 59:2440-2448. [PMID: 31714669 DOI: 10.1002/anie.201912904] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 11/04/2019] [Indexed: 12/17/2022]
Abstract
We have developed an optical method for accurate concentration, er, and dr analysis of amino alcohols based on a simple mix-and-measure workflow that is fully adaptable to multiwell plate technology and microscale analysis. The conversion of the four aminoindanol stereoisomers with salicylaldehyde to the corresponding Schiff base allows analysis of the dr based on a change in the UV maximum at 420 nm that is very different for the homo- and heterochiral diastereomers and of the concentration of the sample using a hypsochromic shift of another absorption band around 340 nm that is independent of the analyte stereochemistry. Subsequent in situ formation of CuII assemblies in the absence and presence of base enables quantification of the er values for each diastereomeric pair by CD analysis. Applying a linear programming method and a parameter sweep algorithm, we determined the concentration and relative amounts of each of the four stereoisomers in 20 samples of vastly different stereoisomeric compositions with an averaged absolute percent error of 1.7 %.
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Affiliation(s)
| | - Sean MacAvaney
- Department of Computer Science, Georgetown University, Washington, DC, 20057, USA
| | - Katina Russell
- Department of Computer Science, Georgetown University, Washington, DC, 20057, USA
| | - Christian Wolf
- Department of Chemistry, Georgetown University, Washington, DC, 20057, USA
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27
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Chen Z, Yang M, Sun Z, Zhang X, Xu J, Bian G, Song L. Chiral Discrimination by a Binuclear Pd Complex Sensor Using 31P{ 1H} NMR. Anal Chem 2019; 91:14591-14596. [PMID: 31657901 DOI: 10.1021/acs.analchem.9b03661] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
An axially chiral binuclear μ-hydroxo Pd complex (BPHP) first served as an excellent chiral sensor for discriminating a variety of analytes including amino alcohol, amino amide, amino acid, mandelic acid, diol, diamine, and monoamine by 31P{1H} NMR. A detailed recognition mechanism was proposed based on the single crystal and mass spectrum of Pd-complexes. In general, BPHP sensor, through extracting the acidic hydrogen of an analyte by its Pd-OH group, forms stable diastereomeric complexes with two enantiomers of the analyte giving well distinguishable split 31P{1H} NMR signals for chiral discrimination.
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Affiliation(s)
- Zhongxiang Chen
- The Key Laboratory of Coal to Ethylene Glycol and Its Related Technology , Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , Fuzhou , Fujian 350002 , China.,University of Chinese Academy of Sciences , 100049 , Beijing , China
| | - Mingxue Yang
- The Key Laboratory of Coal to Ethylene Glycol and Its Related Technology , Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , Fuzhou , Fujian 350002 , China.,University of Chinese Academy of Sciences , 100049 , Beijing , China
| | - Zhaofeng Sun
- The Key Laboratory of Coal to Ethylene Glycol and Its Related Technology , Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , Fuzhou , Fujian 350002 , China.,University of Chinese Academy of Sciences , 100049 , Beijing , China
| | - Xuebo Zhang
- The Key Laboratory of Coal to Ethylene Glycol and Its Related Technology , Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , Fuzhou , Fujian 350002 , China.,College of Material Science and Engineering , Fujian Normal University , Fuzhou 350007 , China
| | - Jing Xu
- The Key Laboratory of Coal to Ethylene Glycol and Its Related Technology , Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , Fuzhou , Fujian 350002 , China.,College of Material Science and Engineering , Fujian Normal University , Fuzhou 350007 , China
| | - Guangling Bian
- The Key Laboratory of Coal to Ethylene Glycol and Its Related Technology , Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , Fuzhou , Fujian 350002 , China.,University of Chinese Academy of Sciences , 100049 , Beijing , China
| | - Ling Song
- The Key Laboratory of Coal to Ethylene Glycol and Its Related Technology , Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , Fuzhou , Fujian 350002 , China.,University of Chinese Academy of Sciences , 100049 , Beijing , China
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28
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Zheng L, Zhan Y, Ye L, Zheng D, Wang Y, Zhang K, Jiang H. Chiral Induction and Remote Chiral Communication in Quinoline Oligoamide Foldamers for Determination of Enantiomeric Excess and Absolute Configuration of Chiral Amines and Their Derivatives. Chemistry 2019; 25:14162-14168. [PMID: 31389064 DOI: 10.1002/chem.201903032] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Revised: 08/03/2019] [Indexed: 12/13/2022]
Abstract
Two pentameric foldamers, Q5 and Q5C-S, containing a C-F bond were synthesized based on quinoline oligamide foldamers for the measurement of enantiomeric excess and for the determination of absolute configuration of chiral amines, diamines, amino alcohols, and α-amino acid esters. Chiral induction of Q5 was triggered in situ when the chiral analytes reacted with the C-F bond in Q5 by a N-nucleophilic substitution reaction, leading to a linear correlation between the CD amplitude at the region of quinoline chromophores and the ee values of the chiral analytes, which can be used for the ee determination of chiral analytes. Furthermore, the CD intensity of Q5C-S containing a chiral motif at its C-terminus enhances via remote, favorable chiral communication when the chiral induction was triggered in situ by chiral analytes at the N-terminus matches the original helicity of Q5C-S, but decreases via remote, conflicted chiral communication when the chiral induction is triggered in situ by chiral molecules at the N-terminus mismatches the original one. The system can thus be used for determination of the absolute configuration of chiral analytes, given that the chirality of the chiral motif at the C-terminus of Q5C-S is known.
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Affiliation(s)
- Lu Zheng
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020, P. R. China.,International Healthcare Innovation Institute (Jiangmen), Jiangmen, 529040, P. R. China.,School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, 510006, P. R. China
| | - Yulin Zhan
- College of Chemistry, Beijing Normal University, Beijing, 100875, P. R. China
| | - Lin Ye
- College of Chemistry, Beijing Normal University, Beijing, 100875, P. R. China
| | - Dan Zheng
- College of Chemistry, Beijing Normal University, Beijing, 100875, P. R. China
| | - Ying Wang
- College of Chemistry, Beijing Normal University, Beijing, 100875, P. R. China
| | - Kun Zhang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020, P. R. China.,International Healthcare Innovation Institute (Jiangmen), Jiangmen, 529040, P. R. China
| | - Hua Jiang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020, P. R. China.,International Healthcare Innovation Institute (Jiangmen), Jiangmen, 529040, P. R. China.,College of Chemistry, Beijing Normal University, Beijing, 100875, P. R. China
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29
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Thanzeel FY, Sripada A, Wolf C. Quantitative Chiroptical Sensing of Free Amino Acids, Biothiols, Amines, and Amino Alcohols with an Aryl Fluoride Probe. J Am Chem Soc 2019; 141:16382-16387. [PMID: 31564090 DOI: 10.1021/jacs.9b07588] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The comprehensive determination of the absolute configuration, enantiomeric ratio, and total amount of standard amino acids by optical methods adaptable to high-throughput screening with modern plate readers has remained a major challenge to date. We now present a small-molecular probe that smoothly reacts with amino acids and biothiols in aqueous solution and thereby generates distinct chiroptical responses to accomplish this task. The achiral sensor is readily available, inexpensive, and suitable for chiroptical analysis of each of the 19 standard amino acids, biothiols, aliphatic, and aromatic amines and amino alcohols. The sensing method is operationally simple, and data collection and processing are straightforward. The utility and practicality of the assay are demonstrated with the accurate analysis of 10 aspartic acid samples covering a wide concentration range and largely varying enantiomeric compositions. Accurate er sensing of 85 scalemic samples of Pro, Met, Cys, Ala, methylpyrrolidine, 1-(2-naphthyl)amine, and mixtures thereof is also presented.
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Affiliation(s)
- F Yushra Thanzeel
- Department of Chemistry , Georgetown University , 37th and O Streets , Washington , D.C. 20057 , United States
| | - Archita Sripada
- Department of Chemistry , Georgetown University , 37th and O Streets , Washington , D.C. 20057 , United States
| | - Christian Wolf
- Department of Chemistry , Georgetown University , 37th and O Streets , Washington , D.C. 20057 , United States
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30
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Thanzeel FY, Balaraman K, Wolf C. Streamlined Asymmetric Reaction Development: A Case Study with Isatins. Chemistry 2019; 25:11020-11025. [DOI: 10.1002/chem.201902688] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Revised: 07/08/2019] [Indexed: 12/31/2022]
Affiliation(s)
- F. Yushra Thanzeel
- Department of Chemistry Georgetown University 37th and O Streets Washington DC 20057 USA
| | - Kaluvu Balaraman
- Department of Chemistry Georgetown University 37th and O Streets Washington DC 20057 USA
| | - Christian Wolf
- Department of Chemistry Georgetown University 37th and O Streets Washington DC 20057 USA
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31
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Bravin C, Mason G, Licini G, Zonta C. A Diastereodynamic Probe Transducing Molecular Length into Chiroptical Readout. J Am Chem Soc 2019; 141:11963-11969. [DOI: 10.1021/jacs.9b04151] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Carlo Bravin
- Dipartimento di Scienze Chimiche, Università degli Studi di Padova, 35131 Padova, Italy
| | - Giulia Mason
- Dipartimento di Scienze Chimiche, Università degli Studi di Padova, 35131 Padova, Italy
| | - Giulia Licini
- Dipartimento di Scienze Chimiche, Università degli Studi di Padova, 35131 Padova, Italy
| | - Cristiano Zonta
- Dipartimento di Scienze Chimiche, Università degli Studi di Padova, 35131 Padova, Italy
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32
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Pilicer SL, Mancinelli M, Mazzanti A, Wolf C. Predictive chirality sensing via Schiff base formation. Org Biomol Chem 2019; 17:6699-6705. [PMID: 31243416 DOI: 10.1039/c9ob01265f] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Among the large number of chiroptical sensors that have been developed to date, few allow rational determination of the absolute configuration of chiral substrates together with quantitative ee analysis. We have prepared and tested stereodynamic N-aryl aminobenzaldehyde sensors that bind chiral amines via Schiff base formation. The covalent binding of the amine substrate generates a conformational bias in the chromophoric sensor moiety which results in characteristic CD signals. Computational analysis revealed that CD prediction of the sign of the Cotton effect and thus determination of the absolute configuration of the substrate becomes practical with a sterically crowded sensor design because the number of conformations to be considered is largely reduced and the chiroptical sensor response is less sensitive to conformational equilibria. The amplitude of the measured CD signal can be used for quantitative ee analysis of nonracemic amine samples with the help of a calibration curve.
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Affiliation(s)
- Samantha L Pilicer
- Department of Chemistry, Georgetown University, 37th and O Streets, Washington, DC 20057, USA.
| | - Michele Mancinelli
- Department of Industrial Chemistry "Toso Montanari", University of Bologna, Viale Risorgimento 4, 40136 Bologna, Italy.
| | - Andrea Mazzanti
- Department of Industrial Chemistry "Toso Montanari", University of Bologna, Viale Risorgimento 4, 40136 Bologna, Italy.
| | - Christian Wolf
- Department of Chemistry, Georgetown University, 37th and O Streets, Washington, DC 20057, USA.
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33
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Lynch CC, De Los Santos ZA, Wolf C. Chiroptical sensing of unprotected amino acids, hydroxy acids, amino alcohols, amines and carboxylic acids with metal salts. Chem Commun (Camb) 2019; 55:6297-6300. [PMID: 31089587 DOI: 10.1039/c9cc02525a] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Optical chirality sensing of unprotected amino acids, hydroxy acids, amino alcohols, amines and carboxylic acids based on a practical mix-and-measure protocol with readily available copper, iron, palladium, manganese, cerium or rhodium salts is demonstrated. The generation of strong cotton effects allows quantitative ee analysis of small sample amounts with high speed. In contrast to previously reported assays the use of chromophoric reporter ligands and the control of metal coordination kinetics and redox chemistry are not necessary which greatly simplifies the sensing procedure with the benefit of reduced waste production and cost.
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Affiliation(s)
- Ciarán C Lynch
- Department of Chemistry, Georgetown University, Washington, DC, USA.
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34
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Zheng H, Ye H, Yu X, You L. Interplay between n→π* Interactions and Dynamic Covalent Bonds: Quantification and Modulation by Solvent Effects. J Am Chem Soc 2019; 141:8825-8833. [PMID: 31075197 DOI: 10.1021/jacs.9b01006] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Orbital donor-acceptor interactions play critical roles throughout chemistry, and hence, their regulation and functionalization are of great significance. Herein we demonstrate for the first time the investigation of n→π* interactions through the strategy of dynamic covalent chemistry (DCC), and we further showcase its use in the stabilization of imine. The n→π* interaction between donor X and acceptor aldehyde/imine within 2-X-2'-formylbiphenyl derivatives was found to significantly influence the thermodynamics of imine exchange. The orbital interaction was then quantified through imine exchange, the equilibrium of which was successfully correlated with the difference in natural bond orbital stabilization energy of n→π* interactions of aldehyde and its imine. Moreover, the examination of solvent effects provided insights into the distinct feature of the modulation of n→π* interaction with aprotic and protic solvents. The n→π* interaction involving imine was enhanced in protic solvents due to hydrogen bonding with the solvent. This finding further enabled the stabilization of imine in purely aqueous solution. The strategies and results reported should find application in many fields, including molecular recognition, biological labeling, and asymmetric catalysis.
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Affiliation(s)
- Hao Zheng
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter , Chinese Academy of Sciences , Fuzhou 350002 , China.,College of Chemistry and Material Science , Fujian Normal University , Fuzhou 350007 China
| | - Hebo Ye
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter , Chinese Academy of Sciences , Fuzhou 350002 , China.,University of Chinese of Academy of Sciences , Beijing 100049 , China
| | - Xiaoxia Yu
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter , Chinese Academy of Sciences , Fuzhou 350002 , China.,College of Chemistry and Material Science , Fujian Normal University , Fuzhou 350007 China
| | - Lei You
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter , Chinese Academy of Sciences , Fuzhou 350002 , China.,University of Chinese of Academy of Sciences , Beijing 100049 , China
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35
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Wu D, Kong Y. Dynamic Interaction between Host and Guest for Enantioselective Recognition: Application of β-Cyclodextrin-Based Charged Catenane As Electrochemical Probe. Anal Chem 2019; 91:5961-5967. [DOI: 10.1021/acs.analchem.9b00378] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Datong Wu
- Jiangsu Key Laboratory of Advanced Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
| | - Yong Kong
- Jiangsu Key Laboratory of Advanced Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
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36
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Osawa K, Tagaya H, Kondo SI. Induced Circular Dichroism of Achiral Cyclic Bisurea via Hydrogen Bonds with Chiral Carboxylates. J Org Chem 2019; 84:6623-6630. [DOI: 10.1021/acs.joc.9b00073] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kohei Osawa
- Graduate School of Science and Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
| | - Hideyuki Tagaya
- Graduate School of Science and Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
| | - Shin-ichi Kondo
- Department of Chemistry, Faculty of Science, Yamagata University, 1-4-12 Kojirakawa-machi, Yamagata City, Yamagata 990-8560, Japan
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37
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Mądry T, Czapik A, Kwit M. Optical Activity and Helicity Enhancement of Highly Sensitive Dinaphthylmethane-Based Stereodynamic Probes for Secondary Alcohols. ACS OMEGA 2019; 4:3244-3256. [PMID: 31459541 PMCID: PMC6648851 DOI: 10.1021/acsomega.8b03337] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Accepted: 01/21/2019] [Indexed: 06/10/2023]
Abstract
Chirality transfer from circular dichroism (CD)-silent secondary alcohol (inductor) to the stereodynamic bichromophoric di(1-naphthyl)methane probe (reporter) led to the generation of intense, induced exciton-type Cotton effects (CEs) in the ultraviolet-visible absorption region. The di(1-naphthyl)methane probe exhibits extraordinarily high sensitivity to even small structural variations of the alcohol skeleton, that is, the probe is able to distinguish between an oxygen atom and a methylene group in a 3-hydroxytetrahydrofurane skeleton. Signs and amplitudes of the exciton couplets of 1Bb electronic transition might be correlated with the type of stereo-differentiating parts of the molecule flanking the stereogenic center, however, not with the absolute configuration. The origin of the induced CEs was established by means of experimental and theoretical methods. As a result, a mechanism of chirality transfer from the permanent stereogenic center to the bichromophore is proposed.
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Affiliation(s)
- Tomasz Mądry
- Department
of Chemistry, Adam Mickiewicz University, Umultowska 89B, 61 614 Poznan, Poland
| | - Agnieszka Czapik
- Department
of Chemistry, Adam Mickiewicz University, Umultowska 89B, 61 614 Poznan, Poland
- Center
for Advanced Technologies, Adam Mickiewicz
University, Umultowska
89C, 61 614 Poznan, Poland
| | - Marcin Kwit
- Department
of Chemistry, Adam Mickiewicz University, Umultowska 89B, 61 614 Poznan, Poland
- Center
for Advanced Technologies, Adam Mickiewicz
University, Umultowska
89C, 61 614 Poznan, Poland
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38
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Sheykhi S, Mosca L, Durgala JM, Anzenbacher P. An indicator displacement assay recognizes enantiomers of chiral carboxylates. Chem Commun (Camb) 2019; 55:7183-7186. [DOI: 10.1039/c9cc03352a] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Analyte chirality induces changes in fluorescence.
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Affiliation(s)
- Sara Sheykhi
- Department of Chemistry and Center for Photochemical Sciences
- Bowling Green State University
- Bowling Green
- USA
| | - Lorenzo Mosca
- Department of Chemistry
- Northwestern University
- Evanston
- USA
| | - Johnathon M. Durgala
- Department of Chemistry and Center for Photochemical Sciences
- Bowling Green State University
- Bowling Green
- USA
| | - Pavel Anzenbacher
- Department of Chemistry and Center for Photochemical Sciences
- Bowling Green State University
- Bowling Green
- USA
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39
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De los Santos ZA, Lynch CC, Wolf C. Optische Chiralitätssensorik mit ligandenfreien, weit verbreiteten Cobaltsalzen. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201811761] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Zeus A. De los Santos
- Department of Chemistry Georgetown University 37th and O Streets Washington DC 20057 USA
| | - Ciarán C. Lynch
- Department of Chemistry Georgetown University 37th and O Streets Washington DC 20057 USA
| | - Christian Wolf
- Department of Chemistry Georgetown University 37th and O Streets Washington DC 20057 USA
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40
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De los Santos ZA, Lynch CC, Wolf C. Optical Chirality Sensing with an Auxiliary‐Free Earth‐Abundant Cobalt Probe. Angew Chem Int Ed Engl 2018; 58:1198-1202. [DOI: 10.1002/anie.201811761] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Revised: 11/20/2018] [Indexed: 11/09/2022]
Affiliation(s)
- Zeus A. De los Santos
- Department of Chemistry Georgetown University 37th and O Streets Washington DC 20057 USA
| | - Ciarán C. Lynch
- Department of Chemistry Georgetown University 37th and O Streets Washington DC 20057 USA
| | - Christian Wolf
- Department of Chemistry Georgetown University 37th and O Streets Washington DC 20057 USA
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41
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Click chemistry enables quantitative chiroptical sensing of chiral compounds in protic media and complex mixtures. Nat Commun 2018; 9:5323. [PMID: 30552322 PMCID: PMC6294054 DOI: 10.1038/s41467-018-07695-9] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Accepted: 11/16/2018] [Indexed: 12/31/2022] Open
Abstract
Click reactions have become powerful synthetic tools with unique applications in the health and materials sciences. Despite the progress with optical sensors that exploit the principles of dynamic covalent chemistry, metal coordination or supramolecular assemblies, quantitative analysis of complex mixtures remains challenging. Herein, we report the use of a readily available coumarin conjugate acceptor for chiroptical click chirality sensing of the absolute configuration, concentration and enantiomeric excess of several compound classes. This method has several attractive features, including wide scope, fast substrate fixation without by-product formation or complicate equilibria often encountered in reversible substrate binding, excellent solvent compatibility, and tolerance of air and water. The ruggedness and practicality of this approach are demonstrated by comprehensive analysis of nonracemic monoamine samples and crude asymmetric imine hydrogenation mixtures without work-up. Click chemosensing addresses increasingly important time efficiency, cost, labor and chemical sustainability aspects and streamlines asymmetric reaction development at the mg scale.
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42
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Nian S, Pu L. Racemic Fluorescence Probe for Enantiomeric Excess Determination: Application of Cononsolvency of a Polymer in Sensing. J Org Chem 2018; 84:909-913. [DOI: 10.1021/acs.joc.8b02793] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Shifeng Nian
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904-4319, United States
| | - Lin Pu
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904-4319, United States
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43
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Herrera BT, Pilicer SL, Anslyn EV, Joyce LA, Wolf C. Optical Analysis of Reaction Yield and Enantiomeric Excess: A New Paradigm Ready for Prime Time. J Am Chem Soc 2018; 140:10385-10401. [PMID: 30059621 DOI: 10.1021/jacs.8b06607] [Citation(s) in RCA: 115] [Impact Index Per Article: 19.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
This Perspective highlights the advances of optical methods for asymmetric reaction discovery. Optical analysis allows for the determination of absolute configuration, enantiomeric excess and reaction yield that is amenable to high-throughput experimentation. Thus, the synthetic organic community is encouraged to incorporate the methods discussed to expedite the development of high-yielding, enantioselective transformations.
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Affiliation(s)
- Brenden T Herrera
- Department of Chemistry , The University of Texas at Austin , Austin , Texas 78712 , United States
| | - Samantha L Pilicer
- Department of Chemistry , Georgetown University , Washington, D.C. 20057 , United States
| | - Eric V Anslyn
- Department of Chemistry , The University of Texas at Austin , Austin , Texas 78712 , United States
| | - Leo A Joyce
- Department of Process Research & Development , Merck & Co., Inc. , Rahway , New Jersey 07065 , United States
| | - Christian Wolf
- Department of Chemistry , Georgetown University , Washington, D.C. 20057 , United States
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44
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De los Santos ZA, Joyce LA, Sherer EC, Welch CJ, Wolf C. Optical Chirality Sensing with a Stereodynamic Aluminum Biphenolate Probe. J Org Chem 2018; 84:4639-4645. [DOI: 10.1021/acs.joc.8b01301] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | - Leo A. Joyce
- Department of Process and Analytical Chemistry, Merck Research Laboratories, Rahway, New Jersey 07065, United States
| | - Edward C. Sherer
- Department of Process and Analytical Chemistry, Merck Research Laboratories, Rahway, New Jersey 07065, United States
| | | | - Christian Wolf
- Department of Chemistry, Georgetown University, Washington, DC 20057, United States
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45
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Wu D, Yu Y, Zhang J, Guo L, Kong Y. Chiral Poly(ionic liquid) with Nonconjugated Backbone as a Fluorescent Enantioselective Sensor for Phenylalaninol and Tryptophan. ACS APPLIED MATERIALS & INTERFACES 2018; 10:23362-23368. [PMID: 29911854 DOI: 10.1021/acsami.8b04869] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Here, a novel fluorescent chiral poly(ionic liquid) ( S)-PCIL-4 with nonconjugated backbone is designed and synthesized in the control of micelle through free-radical polymerization, whose fluorescence emission maximum is at λem,max = 430 nm. It is observed that polymers with spatially proximate units (phenyl group and pyridinium cation) have photoluminescence through spatial π-π and ion-π interaction. Then, ( S)-PCIL-4 can be served as a fluorescent turn off/on sensor for chiral recognition of phenylalaninol and tryptophan in the presence of Cu(II). For example, when ( S)-PCIL-4-Cu(II) is treated with ( R/ S)-phenylalaninol, it will exhibit different fluorescence responses. Values of the enantiomeric fluorescence difference ratio for phenylalaninol and tryptophan are 1.10 and 1.08, respectively. In brief, we believe that the approach opens up a possible pathway to prepare a variety of fluorescent polymers with nonconjugated backbone and proves to be desirable in further application.
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Affiliation(s)
- Datong Wu
- Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, School of Petrochemical Engineering , Changzhou University , Changzhou 213164 , China
| | - Yin Yu
- Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, School of Petrochemical Engineering , Changzhou University , Changzhou 213164 , China
| | - Jie Zhang
- Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, School of Petrochemical Engineering , Changzhou University , Changzhou 213164 , China
| | - Lili Guo
- Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, School of Petrochemical Engineering , Changzhou University , Changzhou 213164 , China
| | - Yong Kong
- Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, School of Petrochemical Engineering , Changzhou University , Changzhou 213164 , China
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46
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Yao RX, Fu HH, Yu B, Zhang XM. Chiral metal–organic frameworks constructed from four-fold helical chain SBUs for enantioselective recognition of α-hydroxy/amino acids. Inorg Chem Front 2018. [DOI: 10.1039/c7qi00615b] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Three chiral 3D metal–carboxylate frameworks have been successfully synthesized, featuring four-fold helical metal chains as SBUs. Co-MOFs could recognize enantio-selectively α-hydroxy/amino acids by the change of CD signals.
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Affiliation(s)
- Ru-Xin Yao
- School of Chemistry & Materials Science
- Shanxi Normal University
- Linfen 041004
- China
| | - Huan-Huan Fu
- School of Chemistry & Materials Science
- Shanxi Normal University
- Linfen 041004
- China
| | - Bo Yu
- School of Chemistry & Materials Science
- Shanxi Normal University
- Linfen 041004
- China
| | - Xian-Ming Zhang
- School of Chemistry & Materials Science
- Shanxi Normal University
- Linfen 041004
- China
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47
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Dhamija A, Saha B, Rath SP. Metal-Center-Driven Supramolecular Chirogenesis in Tweezer Amino Alcohol Complexes: Structural, Spectroscopic, and Theoretical Investigations. Inorg Chem 2017; 56:15203-15215. [DOI: 10.1021/acs.inorgchem.7b02569] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Avinash Dhamija
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Bapan Saha
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Sankar Prasad Rath
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India
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48
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Wang L, Jin Z, Wang X, Zeng S, Sun C, Pan Y. Pair of Stereodynamic Chiral Benzylicaldehyde Probes for Determination of Absolute Configuration of Amino Acid Residues in Peptides by Mass Spectrometry. Anal Chem 2017; 89:11902-11907. [DOI: 10.1021/acs.analchem.7b03804] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Lin Wang
- College
of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, Zhejiang, China
- Department
of Chemistry and Chemical Engineering, Beijing University of Technology, 100124, Beijing, China
- Department
of Chemistry, Zhejiang University, Hangzhou 310027, Zhejiang, China
| | - Zhe Jin
- Department
of Chemistry, Zhejiang University, Hangzhou 310027, Zhejiang, China
| | - Xiayan Wang
- Department
of Chemistry and Chemical Engineering, Beijing University of Technology, 100124, Beijing, China
| | - Su Zeng
- College
of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, Zhejiang, China
| | - Cuirong Sun
- College
of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, Zhejiang, China
| | - Yuanjiang Pan
- Department
of Chemistry, Zhejiang University, Hangzhou 310027, Zhejiang, China
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49
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Zardi P, Wurst K, Licini G, Zonta C. Concentration-Independent Stereodynamic g-Probe for Chiroptical Enantiomeric Excess Determination. J Am Chem Soc 2017; 139:15616-15619. [PMID: 29039937 DOI: 10.1021/jacs.7b09469] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Enantiomeric excess (ee) determination is crucial in many aspects of science, from synthesis to materials. Within this subject, coupling molecular sensors with chiroptical techniques is a straightforward approach to the stereochemical analysis of chiral molecules, especially in terms of process immediacy and labor. Stereodynamic probes typically consist of racemic mixtures of rapidly interconverting enantiomeric conformers able to recognize a chiral analyte and greatly amplify its chiroptical readout. A great number of sensors have been developed, but their activity is generally restricted to one or a few classes of chemicals, and the analysis outcome relies on precise knowledge of the probe and analyte concentrations. This aspect in particular limits the potential practical applications. Here we report an oxo-vanadium(V) aminotriphenolate complex that was found to act as a concentration-independent stereodynamic sensor for a wide range of compounds. The bare complex is CD-silent, but coordination of an enantioenriched substrate immediately gives rise to intense Cotton effects in the visible region. Furthermore, a geometry change during the substrate-complex interaction leads to a marked optical response, as witnessed by a strong red-shift of the probe absorption bands, thus allowing the generation of dichroic signals in an "interference-free" area of the spectrum. This peculiarity allows for a linear correlation at high wavelengths between the ee of the analyte and anisotropy g-factor. This parameter derives from the differential circularly polarized light absorption of the sample but is independent of concentration. The newly developed sensor based on a simple coordination process has an unprecedented general character in terms of substrate scope and employment.
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Affiliation(s)
- Paolo Zardi
- Dipartimento di Scienze Chimiche, Università degli Studi di Padova , 35131 Padova, Italy
| | - Klaus Wurst
- Institut für Allgemeine, Anorganische und Theoretische Chemie, University of Innsbruck , Innrain 80/82, A-6020 Innsbruck, Austria
| | - Giulia Licini
- Dipartimento di Scienze Chimiche, Università degli Studi di Padova , 35131 Padova, Italy
| | - Cristiano Zonta
- Dipartimento di Scienze Chimiche, Università degli Studi di Padova , 35131 Padova, Italy
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50
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De los Santos ZA, Legaux NM, Wolf C. Chirality sensing with stereodynamic copper(I) complexes. Chirality 2017; 29:663-669. [DOI: 10.1002/chir.22765] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Revised: 08/16/2017] [Accepted: 08/17/2017] [Indexed: 12/14/2022]
Affiliation(s)
| | | | - Christian Wolf
- Department of Chemistry Georgetown University Washington D.C. USA
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