1
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Guo S, Liu L, Li X, Liu G, Fan Y, He J, Lian Z, Yang H, Chen X, Jiang H. Highly Luminescent Chiral Carbon Nanohoops via Symmetry Breaking with a Triptycene Unit: Bright Circularly Polarized Luminescence and Size-Dependent Properties. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2308429. [PMID: 37988709 DOI: 10.1002/smll.202308429] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 10/31/2023] [Indexed: 11/23/2023]
Abstract
Chiral carbon nanohoops with both high fluorescence quantum yield and large luminescence dissymmetry factor are essential to the development of circularly polarized luminescence (CPL) materials. Herein, the rational design and synthesis of a series of highly fluorescent chiral carbon nanohoops TP-[8-13]CPPs via symmetry breaking with a chiral triptycene motif is reported. Theoretical calculations revealed that breaking the symmetry of nanohoops causes a unique size-dependent localization in the highest occupied molecular orbitals (HOMOs) and the lowest unoccupied molecular obtitals (LUMOs) as the increasing of sizes, which is sharply different from those of [n]cycloparaphenylenes. Photophysical investigations demonstrated that TP-[n]CPPs display size-dependent emissions with high fluorescence quantum yields up to 92.9% for TP-[13]CPP, which is the highest value among the reported chiral conjugated carbon nanohoops. The high fluorescence quantum yields are presumably attributed to both the unique acyclic, and radial conjugations and high radiative transition rates, which are further supported by theoretical investigations. Chiroptical studies revealed that chiral TP-[n]CPPs exhibit bright CPL with CPL brightness up to 100.5 M-1 cm-1 for TP-[11]CPP due to the high fluorescence quantum yield. Importantly, the investigations revealed the intrigued size-dependent properties of TP-[n]CPPs with regards to (chir)optical properties, which follow a nice linear relationship versus 1/n. Such a nice linear relationship is not observed in other reported conjugated nanohoops including CPPs.
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Affiliation(s)
- Shengzhu Guo
- College of Chemistry, Beijing Normal University, Beijing, 100875, P. R. China
| | - Lin Liu
- College of Chemistry, Beijing Normal University, Beijing, 100875, P. R. China
| | - Xiaonan Li
- College of Chemistry, Beijing Normal University, Beijing, 100875, P. R. China
| | - Guoqin Liu
- College of Chemistry, Beijing Normal University, Beijing, 100875, P. R. China
| | - Yanqing Fan
- College of Chemistry, Beijing Normal University, Beijing, 100875, P. R. China
| | - Jing He
- College of Chemistry, Beijing Normal University, Beijing, 100875, P. R. China
| | - Zhe Lian
- College of Chemistry, Beijing Normal University, Beijing, 100875, P. R. China
| | - Huiji Yang
- College of Chemistry, Beijing Normal University, Beijing, 100875, P. R. China
| | - Xuebo Chen
- College of Chemistry, Beijing Normal University, Beijing, 100875, P. R. China
| | - Hua Jiang
- College of Chemistry, Beijing Normal University, Beijing, 100875, P. R. China
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2
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Teng B, Mandal PK, Allmendinger L, Douat C, Ferrand Y, Huc I. Controlling aromatic helix dimerization in water by tuning charge repulsions. Chem Sci 2023; 14:11251-11260. [PMID: 37860656 PMCID: PMC10583700 DOI: 10.1039/d3sc02020g] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Accepted: 09/14/2023] [Indexed: 10/21/2023] Open
Abstract
Several helically folded aromatic oligoamides were designed and synthesized. The sequences were all water-soluble thanks to the charged side chains borne by the monomers. Replacing a few, sometimes only two, charged side chains by neutral methoxy groups was shown to trigger the formation of various aggregates which could be tentatively assigned to head-to-head stacked dimers of single helices, double helical duplexes and a quadruplex, none of which would form in organic solvent with organic-soluble analogues. The nature of the aggregates was supported by concentration and solvent dependent NMR studies, 1H DOSY experiments, mass spectrometry, and X-ray crystallography or energy-minimized models, as well as analogies with earlier studies. The hydrophobic effect appears to be the main driving force for aggregation but it can be finely modulated by the presence or absence of a small number of charges to an extent that had no precedent in aromatic foldamer architectures. These results will serve as a benchmark for future foldamer design in water.
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Affiliation(s)
- Binhao Teng
- Department of Pharmacy, Ludwig-Maximilians-Universität Butenandtstr. 5-13 81377 München Germany
| | - Pradeep K Mandal
- Department of Pharmacy, Ludwig-Maximilians-Universität Butenandtstr. 5-13 81377 München Germany
| | - Lars Allmendinger
- Department of Pharmacy, Ludwig-Maximilians-Universität Butenandtstr. 5-13 81377 München Germany
| | - Céline Douat
- Department of Pharmacy, Ludwig-Maximilians-Universität Butenandtstr. 5-13 81377 München Germany
| | - Yann Ferrand
- Univ. Bordeaux, CNRS, Bordeaux Institut National Polytechnique CBMN UMR 5248, 2 rue Escarpit 33600 Pessac France
| | - Ivan Huc
- Department of Pharmacy, Ludwig-Maximilians-Universität Butenandtstr. 5-13 81377 München Germany
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3
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Menke FS, Mazzier D, Wicher B, Allmendinger L, Kauffmann B, Maurizot V, Huc I. Molecular torsion springs: alteration of helix curvature in frustrated tertiary folds. Org Biomol Chem 2023; 21:1275-1283. [PMID: 36645374 DOI: 10.1039/d2ob02109a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The first abiotic foldamer tertiary structures have been recently reported in the form of aromatic helix-turn-helix motifs based on oligo-quinolinecarboxamides held together by intramolecular hydrogen bonds. Tertiary folds were predicted by computational modelling of the hydrogen-bonding interfaces between helices and later verified by X-ray crystallography. However, the prognosis of how the conformational preference inherent to each helix influences the tertiary structure warranted further investigation. Several new helix-turn-helix sequences were synthesised in which some hydrogen bonds have been removed. Contrary to expectations, this change did not strongly destabilise the tertiary folds. On closer inspection, a new crystal structure revealed that helices adopt their natural curvature when some hydrogen bonds are missing and undergo some spring torsion upon forming the said hydrogen bonds, thus potentially giving rise to a conformational frustration. This phenomenon sheds light on the aggregation behaviour of the helices when they are not linked by a turn unit.
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Affiliation(s)
- Friedericke S Menke
- Department of Pharmacy, Ludwig-Maximilians-University, Butenandstraße 5-13, 81377 Munich, Germany.
| | - Daniela Mazzier
- Department of Pharmacy, Ludwig-Maximilians-University, Butenandstraße 5-13, 81377 Munich, Germany.
| | - Barbara Wicher
- Department of Chemical Technology of Drugs, Poznan University of Medical Sciences, Grunwaldzka 6, 60-780 Poznan, Poland
| | - Lars Allmendinger
- Department of Pharmacy, Ludwig-Maximilians-University, Butenandstraße 5-13, 81377 Munich, Germany.
| | - Brice Kauffmann
- Institut Européen de Chimie et Biologie (UMS3011/US001), CNRS, Inserm, Université de Bordeaux, 2 rue Robert Escarpit, F-33600 Pessac, France
| | - Victor Maurizot
- CBMN (UMR 5248), Univ. Bordeaux, CNRS, Bordeaux INP, 2 rue Robert Escarpit, 33600 Pessac, France
| | - Ivan Huc
- Department of Pharmacy, Ludwig-Maximilians-University, Butenandstraße 5-13, 81377 Munich, Germany.
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4
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Liu B, Xing P. Hydrogen Bonded Foldamers with Axial Chirality: Chiroptical Properties and Applications. Chemistry 2023; 29:e202202665. [PMID: 36281580 DOI: 10.1002/chem.202202665] [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: 08/26/2022] [Revised: 10/24/2022] [Accepted: 10/25/2022] [Indexed: 11/07/2022]
Abstract
Folding phenomenon refers to the formation of a specific conformation widely featured by the intramolecular interactions, which broadly exist in biomacromolecules, and are closely related to their structures and functions. A variety of oligomeric folded molecules have been designed and synthesized, namely "foldamer", exhibiting potentials in pharmaceutical and catalysis. Molecular folding is a promising strategy to transfer chirality from substituents to the whole skeleton, when chirality transfer, amplification, evolution, and other behaviors could be achieved. Investigating chirality using foldamer model deepens the understanding of the structure-function correlation in biomacromolecules and expands the molecular toolbox towards chiroptical and asymmetrical chemistry. Substitutes with abundant hydrogen bonding sites conjugated to a rotatable aryl group afford a parallel β-sheet-like conformation, which enables the emergence and manipulation of axial chirality. This concept aims to give a brief introduction and summary of the hydrogen bonded foldamers with anchored axial chirality, by taking some recent cases as examples. Design principles, control over axial chirality and applications are also reviewed.
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Affiliation(s)
- Bingyu Liu
- Key Laboratory of Colloid and Interface Chemistry of Ministry of Education and School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, P. R. China
| | - Pengyao Xing
- Key Laboratory of Colloid and Interface Chemistry of Ministry of Education and School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, P. R. China
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5
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Bindl D, Mandal PK, Huc I. Generalizing the Aromatic δ‐Amino Acid Foldamer Helix. Chemistry 2022; 28:e202200538. [PMID: 35332956 PMCID: PMC9322652 DOI: 10.1002/chem.202200538] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Indexed: 11/12/2022]
Abstract
A series of aromatic oligoamide foldamer sequences containing different proportions of three δ‐amino acids derived from quinoline, pyridine, and benzene and possessing varying flexibility, for example due to methylene bridges, were synthesized. Crystallographic structures of two key sequences and 1H NMR data in water concur to show that a canonical aromatic helix fold prevails in almost all cases and that helix stability critically depends on the ratio between rigid and flexible units. Notwithstanding subtle variations of curvature, i. e. the numbers of units per turn, the aromatic δ‐peptide helix is therefore shown to be general and tolerant of a great number of sp3 centers. We also demonstrate canonical helical folding upon alternating two monomers that do not promote folding when taken separately: folding occurs with two methylenes between every other unit, not with one methylene between every unit. These findings highlight that a fine‐tuning of helix handedness inversion kinetics, curvature, and side chain positioning in aromatic δ‐peptidic foldamers can be realized by systematically combining different yet compatible δ‐amino acids.
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Affiliation(s)
- Daniel Bindl
- Department of Pharmacy and Center for Integrated Protein Science Ludwig-Maximilians-Universität Butenandtstraße 5–13 München 81377 Germany
| | - Pradeep K. Mandal
- Department of Pharmacy and Center for Integrated Protein Science Ludwig-Maximilians-Universität Butenandtstraße 5–13 München 81377 Germany
| | - Ivan Huc
- Department of Pharmacy and Center for Integrated Protein Science Ludwig-Maximilians-Universität Butenandtstraße 5–13 München 81377 Germany
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6
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Li H, Kou L, Liang L, Li B, Zhao W, Yang XJ, Wu B. Anion-coordination-driven single-double helix switching and chiroptical molecular switching based on oligoureas. Chem Sci 2022; 13:4915-4921. [PMID: 35655878 PMCID: PMC9067589 DOI: 10.1039/d2sc00876a] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Accepted: 04/02/2022] [Indexed: 11/21/2022] Open
Abstract
Synthetic foldamers with helical conformation are widely seen, but controllable interconversion amongst different geometries (helical structure and sense) is challenging. Here, a family of oligourea (tetra-, penta-, and hexa-) ligands bearing stereocenters at both ends are designed and shown to switch between single and double helices with concomitant inversion of helical senses upon anion coordination. The tetraurea ligand forms a right-handed single helix upon chloride anion (Cl-) binding and is converted into a left-handed double helix when phosphate anion (PO4 3-) is coordinated. The helical senses of the single and double helices are opposite, and the conversion is further found to be dependent on the stoichiometry of the ligand and phosphate anion. In contrast, only a single helix is formed for the hexaurea ligand with the phosphate anion. This distinction is attributed to the fact that the characteristic phosphate anion coordination geometry is satisfied by six urea moieties with twelve H-bonds. Our study revealed unusual single-double helix interconversion accompanied by unexpected chiroptical switching of helical senses.
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Affiliation(s)
- Hongfei Li
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry and Materials Science, Northwest University Xi'an 710069 China
| | - Lei Kou
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry and Materials Science, Northwest University Xi'an 710069 China
| | - Lin Liang
- Key Laboratory of Medical Molecule Science and Pharmaceutics Engineering, Ministry of Industry and Information Technology, School of Chemistry and Chemical Engineering, Beijing Institute of Technology Beijing 102488 China
| | - Boyang Li
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry and Materials Science, Northwest University Xi'an 710069 China
| | - Wei Zhao
- Key Laboratory of Medical Molecule Science and Pharmaceutics Engineering, Ministry of Industry and Information Technology, School of Chemistry and Chemical Engineering, Beijing Institute of Technology Beijing 102488 China
| | - Xiao-Juan Yang
- Key Laboratory of Medical Molecule Science and Pharmaceutics Engineering, Ministry of Industry and Information Technology, School of Chemistry and Chemical Engineering, Beijing Institute of Technology Beijing 102488 China
| | - Biao Wu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry and Materials Science, Northwest University Xi'an 710069 China
- Key Laboratory of Medical Molecule Science and Pharmaceutics Engineering, Ministry of Industry and Information Technology, School of Chemistry and Chemical Engineering, Beijing Institute of Technology Beijing 102488 China
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7
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Wang LY, Liu ZF, Teng KX, Niu LY, Yang QZ. Circularly polarized luminescence from helical N,O-boron-chelated dipyrromethene (BODIPY) derivatives. Chem Commun (Camb) 2022; 58:3807-3810. [PMID: 35233587 DOI: 10.1039/d1cc06051a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
We report N,O-boron-chelated dipyrromethene derivatives exhibiting circularly polarized luminescence (CPL) in the red/near-infrared region, both in solution and the aggregated state. The CPL is originated from the helical chirality through intramolecular substitution of fluorine by an alkenolic substituent. The self-assembly of the fluorophores significantly enhances the |glum| values from 10-4 to 10-2.
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Affiliation(s)
- Ling-Yun Wang
- Key Laboratory of Radiopharmaceuticals, Ministry of Edsucation, College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China.
| | - Zheng-Fei Liu
- Key Laboratory of Radiopharmaceuticals, Ministry of Edsucation, College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China.
| | - Kun-Xu Teng
- Key Laboratory of Radiopharmaceuticals, Ministry of Edsucation, College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China.
| | - Li-Ya Niu
- Key Laboratory of Radiopharmaceuticals, Ministry of Edsucation, College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China.
| | - Qing-Zheng Yang
- Key Laboratory of Radiopharmaceuticals, Ministry of Edsucation, College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China.
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8
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He J, Yu M, Pang M, Fan Y, Lian Z, Wang Y, Wang W, Liu Y, Jiang H. Nanosized Carbon Macrocycles Based on a Planar Chiral Pseudo Meta- [2.2]Paracyclophane. Chemistry 2021; 28:e202103832. [PMID: 34962000 DOI: 10.1002/chem.202103832] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Indexed: 11/07/2022]
Abstract
Structural designs combining cycloparaphenylenes (CPPs) backbone with planar chiral [2.2]Paracyclophane ([2.2]PCP) lead to optical-active chiral macrocycles with intriguing properties. X-ray crystal analysis revealed aesthetic necklace-shaped structures and size-dependent packages with long-range channels. The macrocycles exhibit unique photophysical properties with high fluorescence quantum yield of up to 82%, and the fluorescent color varies with ring size. In addition, size-dependent chiroptical properties with moderately large CPL dissymmetry factor of 10 -3 and CPL brightness in the range of 30 - 40 M -1 cm -1 were observed.
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Affiliation(s)
- Jing He
- College of Chemistry, Beijing Normal University, Beijing, 100875, P. R. China
| | - Mohan Yu
- College of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian, 116029, P. R. China
| | - Maofu Pang
- School of Chemistry and Chemical Engineering, Shandong University, Jinan, 252100, P. R. China
| | - Yanqing Fan
- College of Chemistry, Beijing Normal University, Beijing, 100875, P. R. China
| | - Zhe Lian
- College of Chemistry, Beijing Normal University, Beijing, 100875, P. R. China
| | - Ying Wang
- College of Chemistry, Beijing Normal University, Beijing, 100875, P. R. China
| | - Wenguang Wang
- College of Chemistry, Beijing Normal University, Beijing, 100875, P. R. China
| | - Yajun Liu
- College of Chemistry, Beijing Normal University, Beijing, 100875, P. R. China
| | - Hua Jiang
- College of Chemistry, Beijing Normal University, Beijing, 100875, P. R. China
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9
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Zheng D, Guo S, Zheng L, Xu Q, Wang Y, Jiang H. Red circularly polarized luminescence from intramolecular excimers restricted by chiral aromatic foldamers. Chem Commun (Camb) 2021; 57:12016-12019. [PMID: 34713879 DOI: 10.1039/d1cc05163f] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Aromatic oligoamide foldamers are highlighted as a verstile paltform for developing single-handed foldamers with two aromatic acetenyl groups at the same side. The foldamers with pyrene acetenyl units exhibit red excimer emissions, which were circularly polarized and show interesting circularly polarized luminescence properties with high CPL brightness BCPL up to 109.8 M-1.cm-1. The red excimer CPL was attributed to the extended conjugations and the spatial restriction of pyrene units at the same side of foldamers.
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Affiliation(s)
- Dan Zheng
- College of Chemistry, Beijing Normal University, Beijing 100875, China.
| | - Shengzhu Guo
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China
| | - Lu Zheng
- College of Chemistry, Beijing Normal University, Beijing 100875, China. .,School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China
| | - Qi Xu
- College of Chemistry, Beijing Normal University, Beijing 100875, China.
| | - Ying Wang
- College of Chemistry, Beijing Normal University, Beijing 100875, China.
| | - Hua Jiang
- College of Chemistry, Beijing Normal University, Beijing 100875, China. .,School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China
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10
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Matsumura K, Tateno K, Tsuchido Y, Kawai H. Spacer-Dependent Cooperativity of Helicity in Fluorescent Bishelical Foldamers Based on L-Shaped Dibenzopyrrolo[1,2-a][1,8]naphthyridine. Chempluschem 2021; 86:1421-1425. [PMID: 34636489 DOI: 10.1002/cplu.202100407] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 09/21/2021] [Indexed: 12/21/2022]
Abstract
For the construction of helical foldamers composed of π-frameworks, the choice of appropriate π-π stacking units and π-spacers connecting them is important. The transfer of helicity between the minimal helix structural units is also an essential factor in the construction of homochiral helical foldamers. Tetramers 4 a-4 d, which have four L-shaped dibenzopyrrolo[1,2-a]naphthyridine units, were synthesized to investigate the interplay and cooperativity of the helical structures. Tetramer 4 a bridged with a biphenyl unit formed a homochiral bishelical structure with π-π stacking between the L-shaped units (3.3 Å), consisting only of (P,P)- and (M,M)-enantiomers without the (P,M)-diastereomer, owing to interplay through the axial chirality of biphenyl unit in the solid state. Similarly, in solution, thermodynamic stabilization of the two helix formations worked cooperatively to favor the bishelical form of 4 a. Furthermore, bishelical foldamer 4 a emitted intense fluorescence (Φ=0.86).
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Affiliation(s)
- Kotaro Matsumura
- Department of Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo, 162-8601, Japan
| | - Kotaro Tateno
- Department of Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo, 162-8601, Japan
| | - Yoshitaka Tsuchido
- Department of Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo, 162-8601, Japan
| | - Hidetoshi Kawai
- Department of Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo, 162-8601, Japan
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11
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Greenfield JL, Wade J, Brandt JR, Shi X, Penfold TJ, Fuchter MJ. Pathways to increase the dissymmetry in the interaction of chiral light and chiral molecules. Chem Sci 2021; 12:8589-8602. [PMID: 34257860 PMCID: PMC8246297 DOI: 10.1039/d1sc02335g] [Citation(s) in RCA: 78] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Accepted: 05/20/2021] [Indexed: 11/23/2022] Open
Abstract
The dissymmetric interaction between circularly polarised (CP) light and chiral molecules is central to a range of areas, from spectroscopy and imaging to next-generation photonic devices. However, the selectivity in absorption or emission of left-handed versus right-handed CP light is low for many molecular systems. In this perspective, we assess the magnitude of the measured chiroptical response for a variety of chiral systems, ranging from small molecules to large supramolecular assemblies, and highlight the challenges towards enhancing chiroptical activity. We explain the origins of low CP dissymmetry and showcase recent examples in which molecular design, and the modification of light itself, enable larger responses. Our discussion spans spatial extension of the chiral chromophore, manipulation of transition dipole moments, exploitation of forbidden transitions and creation of macroscopic chiral structures; all of which can increase the dissymmetry. Whilst the specific strategy taken to enhance the dissymmetric interaction will depend on the application of interest, these approaches offer hope for the development and advancement of all research fields that involve interactions of chiral molecules and light.
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Affiliation(s)
- Jake L Greenfield
- Department of Chemistry and Molecular Sciences Research Hub, Imperial College London, White City Campus 82 Wood Lane London W12 0BZ UK
| | - Jessica Wade
- Department of Materials, Imperial College London Exhibition Road SW7 2AZ UK
- Centre for Processable Electronics, Imperial College London, South Kensington Campus London SW7 2AZ UK
| | - Jochen R Brandt
- Department of Chemistry and Molecular Sciences Research Hub, Imperial College London, White City Campus 82 Wood Lane London W12 0BZ UK
- Centre for Processable Electronics, Imperial College London, South Kensington Campus London SW7 2AZ UK
| | - Xingyuan Shi
- Department of Chemistry and Molecular Sciences Research Hub, Imperial College London, White City Campus 82 Wood Lane London W12 0BZ UK
- Centre for Processable Electronics, Imperial College London, South Kensington Campus London SW7 2AZ UK
| | - Thomas J Penfold
- Chemistry - School of Natural and Environmental Sciences, Newcastle University Newcastle upon Tyne NE1 7RU UK
| | - Matthew J Fuchter
- Department of Chemistry and Molecular Sciences Research Hub, Imperial College London, White City Campus 82 Wood Lane London W12 0BZ UK
- Centre for Processable Electronics, Imperial College London, South Kensington Campus London SW7 2AZ UK
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12
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Li ZQ, Gong ZL, Shao JY, Yao J, Zhong YW. Full-Color and White Circularly Polarized Luminescence of Hydrogen-Bonded Ionic Organic Microcrystals. Angew Chem Int Ed Engl 2021; 60:14595-14600. [PMID: 33822449 DOI: 10.1002/anie.202103091] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 04/01/2021] [Indexed: 01/08/2023]
Abstract
A simple and general method is presented herein for the in situ preparations of circularly polarized luminescence (CPL)-active microcrystals with a large luminescence dissymmetry factor glum , high fluorescence quantum efficiency (ΦFL ), wide emission color tenability, and well-ordered morphology. The reactions of pyridine-containing achiral molecules 1-7 with chiral camphor sulfonic acid ((±)-CSA) gave crystalline microplates formed by hydrogen bonding interactions between the protonated pyridinium units and the sulfonic anions. The chiral information of CSA are effectively transferred to the microcrystals by hydrogen bonding to afford full-color CPL from deep-blue to red with glum in the order of 10-2 and ΦFL up to 80 %. Moreover, organic microcrystals with high-performance white CPL (ΦFL =46 %; |glum |=0.025) are achieved via the light-harvesting energy transfer between blue and yellow emitters.
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Affiliation(s)
- Zhong-Qiu Li
- Key Laboratory of Photochemistry, Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.,School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Zhong-Liang Gong
- Key Laboratory of Photochemistry, Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Jiang-Yang Shao
- Key Laboratory of Photochemistry, Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Jiannian Yao
- Key Laboratory of Photochemistry, Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.,School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yu-Wu Zhong
- Key Laboratory of Photochemistry, Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.,School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
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13
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Bindl D, Heinemann E, Mandal PK, Huc I. Quantitative helix handedness bias through a single H vs. CH 3 stereochemical differentiation. Chem Commun (Camb) 2021; 57:5662-5665. [PMID: 33972976 DOI: 10.1039/d1cc01452h] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A novel chiral aromatic δ-amino acid building block was shown to fully induce handedness in quinoline oligoamide foldamers with the possibility of further increasing the bias by combining multiples of these units in the same sequence. Through its incorporation within the helix, both N- and C-termini are still accessible for further functionalisation.
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Affiliation(s)
- Daniel Bindl
- Department of Pharmacy and Center for Integrated Protein Science, Ludwig-Maximilians-Universität, Butenandtstraße 5-13, München 81377, Germany.
| | - Elisabeth Heinemann
- Department of Pharmacy and Center for Integrated Protein Science, Ludwig-Maximilians-Universität, Butenandtstraße 5-13, München 81377, Germany.
| | - Pradeep K Mandal
- Department of Pharmacy and Center for Integrated Protein Science, Ludwig-Maximilians-Universität, Butenandtstraße 5-13, München 81377, Germany.
| | - Ivan Huc
- Department of Pharmacy and Center for Integrated Protein Science, Ludwig-Maximilians-Universität, Butenandtstraße 5-13, München 81377, Germany.
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14
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Li Z, Gong Z, Shao J, Yao J, Zhong Y. Full‐Color and White Circularly Polarized Luminescence of Hydrogen‐Bonded Ionic Organic Microcrystals. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202103091] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Zhong‐Qiu Li
- Key Laboratory of Photochemistry Beijing National Laboratory for Molecular Sciences CAS Research/Education Center for Excellence in Molecular Sciences Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
- School of Chemical Sciences University of Chinese Academy of Sciences Beijing 100049 China
| | - Zhong‐Liang Gong
- Key Laboratory of Photochemistry Beijing National Laboratory for Molecular Sciences CAS Research/Education Center for Excellence in Molecular Sciences Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
| | - Jiang‐Yang Shao
- Key Laboratory of Photochemistry Beijing National Laboratory for Molecular Sciences CAS Research/Education Center for Excellence in Molecular Sciences Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
| | - Jiannian Yao
- Key Laboratory of Photochemistry Beijing National Laboratory for Molecular Sciences CAS Research/Education Center for Excellence in Molecular Sciences Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
- School of Chemical Sciences University of Chinese Academy of Sciences Beijing 100049 China
| | - Yu‐Wu Zhong
- Key Laboratory of Photochemistry Beijing National Laboratory for Molecular Sciences CAS Research/Education Center for Excellence in Molecular Sciences Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
- School of Chemical Sciences University of Chinese Academy of Sciences Beijing 100049 China
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15
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Nojima Y, Hasegawa M, Hara N, Imai Y, Mazaki Y. Small Figure-Eight Luminophores: Double-Twisted Tethered Cyclic Binaphthyls Boost Circularly Polarized Luminescence. Chemistry 2021; 27:5923-5929. [PMID: 33427332 DOI: 10.1002/chem.202005320] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 01/04/2021] [Indexed: 12/20/2022]
Abstract
Double-twisted cyclic binaphthyls, in which two naphthalenes are tethered by -O(CH2 )n O- linkage (n=1-3), have been synthesized. X-ray analyses and DFT calculations revealed a tightly constrained stereogenic figure-eight geometry. Tethering of two naphthalenes by short linkage forces a small dihedral angle, and the cyclic binaphthyls with short tether (n=1, 2) exhibit remarkable boosting of the glum value (1.0-1.6×10-2 ) in circularly polarized luminescence (CPL) and unusual glum /gabs ratios (0.93-1.3). These experimental high |glum | values are in accord with the results of excited state TD-DFT calculations, which show transannular interactions and that consequent extensive delocalization occurs throughout the figure-eight π-core. As a result, the present figure-eight luminophore promote the elongation of the magnetic transition dipole moment that results in significant increases in glum values.
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Affiliation(s)
- Yuki Nojima
- Graduate School of Science, Kitasato University, Sagamihara, Kanagawa, 252-0373, Japan
| | - Masashi Hasegawa
- Graduate School of Science, Kitasato University, Sagamihara, Kanagawa, 252-0373, Japan
| | - Nobuyuki Hara
- Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University, Higashi-Osaka, Osaka, 577-8502, Japan
| | - Yoshitane Imai
- Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University, Higashi-Osaka, Osaka, 577-8502, Japan
| | - Yasuhiro Mazaki
- Graduate School of Science, Kitasato University, Sagamihara, Kanagawa, 252-0373, Japan
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16
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Moreno K, Merlet E, McClenaghan N, Buffeteau T, Ferrand Y, Olivier C. Influence of Positional Isomerism on the Chiroptical Properties of Functional Aromatic Oligoamide Foldamers. Chempluschem 2021; 86:496-503. [PMID: 33755326 DOI: 10.1002/cplu.202100051] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Revised: 03/08/2021] [Indexed: 12/25/2022]
Abstract
A series of functionalized quinoline-based aromatic oligoamide foldamers were prepared in their two enantiomeric forms, comprising an enantiopure terminal camphanyl chiral inducer, which governed the adjacent (P-/M-) helical-handedness. Hierarchical chirality transfer was further investigated in chromophore-appended variants via a range of electronic and vibrational spectroscopic techniques, including circularly polarized luminescence, vibrational circular dichroism and fluorescence. Intense total and polarized photoluminescence (up to Φlum =0.39, glum =1.5×10-3 ) was observed in the visible region from these modular multicomponent architectures and a significant influence of positional isomerism was evidenced. The optimal position of a fluorophore substituent on the quinoline hexamers was determined as being position 2 over position 6, as stronger chiroptical features were systematically observed with the 2-positioned derivatives.
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Affiliation(s)
- Kevin Moreno
- Institut des Sciences Moléculaires, UMR 5255 CNRS, Université de Bordeaux, 351 Cours de la Libération, 33405, Talence Cedex, France
| | - Eric Merlet
- Institut de Chimie et Biologie des Membranes et des Nano-objets, UMR 5248 CNRS, Université de Bordeaux, 2 rue Robert Escarpit, 33600, Pessac, France
| | - Nathan McClenaghan
- Institut des Sciences Moléculaires, UMR 5255 CNRS, Université de Bordeaux, 351 Cours de la Libération, 33405, Talence Cedex, France
| | - Thierry Buffeteau
- Institut des Sciences Moléculaires, UMR 5255 CNRS, Université de Bordeaux, 351 Cours de la Libération, 33405, Talence Cedex, France
| | - Yann Ferrand
- Institut de Chimie et Biologie des Membranes et des Nano-objets, UMR 5248 CNRS, Université de Bordeaux, 2 rue Robert Escarpit, 33600, Pessac, France
| | - Céline Olivier
- Institut des Sciences Moléculaires, UMR 5255 CNRS, Université de Bordeaux, 351 Cours de la Libération, 33405, Talence Cedex, France
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17
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Zheng L, Guo S, Wang C, Wang Y, Fan Y, Chen X, Zhang K, Jiang H. Distance-Dependent Chiral Communication between Two Quinoline Oligoamide Foldamers Connected by Alkyl Chains. Chempluschem 2021; 86:340-346. [PMID: 33624952 DOI: 10.1002/cplu.202000824] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 02/13/2021] [Indexed: 11/09/2022]
Abstract
A series of macrocycles that contain two quinoline oligoamide foldamers (QOFs) using various length of alkyl chains as linkers (2, 3, 6, 8 or 12 hydrocarbons) were synthesized. The two QOFs interact with each other through the linkers and the intramolecular helix chiral communications between the two QOFs were studied by 1 H NMR spectroscopy and crystal structures. Investigations show that the intensity of the intramolecular helix chiral communications between the two QOFs is dependent on the length of the linkers, and the interaction between the two QOFs increases with decreasing length of the linkers. When the length of the linkers decreased to C2 linkers, only one conformer is present in solution. Moreover, increasing the length of the foldamers would enhance the intramolecular helix chiral communication if the linkers are short, indicating that the length of the foldamers also has significant impact on intramolecular helix chiral communication.
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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 Pharmacy, Jiangsu Ocean University, Lianyungang, 222005, P. R. China
| | - Shengzhu Guo
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020, P. R. China.,International Healthcare Innovation Institute (Jiangmen), Jiangmen, 529040, P. R. China
| | - Chu Wang
- College of Chemistry, Beijing Normal University, Beijing, 100875, P. R. China
| | - Yanru Wang
- College of Chemistry, Beijing Normal University, Beijing, 100875, P. R. China
| | - Yanqing Fan
- College of Chemistry, Beijing Normal University, Beijing, 100875, P. R. China
| | - Xuebo Chen
- 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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18
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Wu B, Wu H, Zhou Y, Zheng D, Jia X, Fang L, Zhu L. Controlling Ultra-Large Optical Asymmetry in Amorphous Molecular Aggregations. Angew Chem Int Ed Engl 2021; 60:3672-3678. [PMID: 33119201 DOI: 10.1002/anie.202012224] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 10/19/2020] [Indexed: 11/10/2022]
Abstract
Although ultra-large optical asymmetry appears in crystalline materials, distractions from the mesoscopic ordering often causes inauthenticity in chiropticity. In amorphous materials, however, it remains challenging and elusive to achieve large chiropticity. Herein, we report the quantitative control of chiral amplification, on amorphous supramolecular structures of cholesteryl-linked bis(dipyrrinato)zinc(II), to an exceptionally high level. A proper chiral packing of the building block at several molecular scale considerably contributes to the absorptive dissymmetry factor gabs , although the system is overall disordered. The intense and tunable aggregation strength renders a variable gabs value up to +0.10 and +0.31 in the solution and in film state. On this basis, a superior ON-OFF switching of chiropticity is realized under external stimuli. This work establishes a general design principle to control over ultra-large optical asymmetry on a wider scope of chiral materials.
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Affiliation(s)
- Bin Wu
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, 200438, China
| | - Hongwei Wu
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, 201620, China
| | - Yunyun Zhou
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, 200438, China
| | - Dongxiao Zheng
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, 200438, China
| | - Xiaoyong Jia
- Henan Key Laboratory of Photovoltaic Materials, Henan University, Kaifeng, 475004, China
| | - Lei Fang
- Department of Chemistry, Texas A&M University, 3255 TAMU, College Station, TX, 77843, USA
| | - Liangliang Zhu
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, 200438, China
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19
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Ortuño AM, Reiné P, Resa S, Álvarez de Cienfuegos L, Blanco V, Paredes JM, Mota AJ, Mazzeo G, Abbate S, Ugalde JM, Mujica V, Longhi G, Miguel D, Cuerva JM. Extended enantiopure ortho-phenylene ethylene ( o-OPE)-based helical systems as scaffolds for supramolecular architectures: a study of chiroptical response and its connection to the CISS effect. Org Chem Front 2021. [DOI: 10.1039/d1qo00822f] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Versatile enantiopure helical systems are described and are of interest owing to their intense chiroptical responses, their attractive architecture for metallosupramolecular chemistry and CISS effect.
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Affiliation(s)
- Ana M. Ortuño
- Department of Organic Chemistry, Faculty of Science, Universidad de Granada (UGR), Unidad de Excelencia de Química (UEQ), E-18071 Granada, Spain
| | - Pablo Reiné
- Department of Organic Chemistry, Faculty of Science, Universidad de Granada (UGR), Unidad de Excelencia de Química (UEQ), E-18071 Granada, Spain
| | - Sandra Resa
- Department of Organic Chemistry, Faculty of Science, Universidad de Granada (UGR), Unidad de Excelencia de Química (UEQ), E-18071 Granada, Spain
| | - Luis Álvarez de Cienfuegos
- Department of Organic Chemistry, Faculty of Science, Universidad de Granada (UGR), Unidad de Excelencia de Química (UEQ), E-18071 Granada, Spain
| | - Victor Blanco
- Department of Organic Chemistry, Faculty of Science, Universidad de Granada (UGR), Unidad de Excelencia de Química (UEQ), E-18071 Granada, Spain
| | | | - Antonio J. Mota
- Department of Inorganic Chemistry, Faculty of Science, UGR-UEQ
| | - Giuseppe Mazzeo
- Department of Molecular and Translational Medicine, Università di Brescia, Brescia, Italy
- Istituto Nazionale di Ottica – CNR, Brescia Research Unit, via Branze 45, 25123 Brescia, Italy
| | - Sergio Abbate
- Department of Molecular and Translational Medicine, Università di Brescia, Brescia, Italy
- Istituto Nazionale di Ottica – CNR, Brescia Research Unit, via Branze 45, 25123 Brescia, Italy
| | - Jesus M. Ugalde
- Kimika Fakultatea, Euskal Herriko Unibertsitatea and Donostia International Physics Center (DIPC), P. K. 1072, 20080 Donostia, Euskadi, Spain
| | - Vladimiro Mujica
- Kimika Fakultatea, Euskal Herriko Unibertsitatea and Donostia International Physics Center (DIPC), P. K. 1072, 20080 Donostia, Euskadi, Spain
- Arizona State University, School of Molecular Sciences, Tempe, AZ 85287, USA
| | - Giovanna Longhi
- Department of Molecular and Translational Medicine, Università di Brescia, Brescia, Italy
- Istituto Nazionale di Ottica – CNR, Brescia Research Unit, via Branze 45, 25123 Brescia, Italy
| | - Delia Miguel
- Department of Physical Chemistry, Faculty of Pharmacy, UGR-UEQ
| | - Juan Manuel Cuerva
- Department of Organic Chemistry, Faculty of Science, Universidad de Granada (UGR), Unidad de Excelencia de Química (UEQ), E-18071 Granada, Spain
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20
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Xu Q, Wang C, He J, Li X, Wang Y, Chen X, Sun D, Jiang H. Corannulene-based nanographene containing helical motifs. Org Chem Front 2021. [DOI: 10.1039/d1qo00366f] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
The synthesis and structural analyses of corannulene-PAH hybrids 1 with a [4] helicene subunit and 2 with a [7] helicene subunit have been reported.
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Affiliation(s)
- Qi Xu
- College of Chemistry
- Beijing Normal University
- Beijing 100875
- China
| | - Chu Wang
- College of Chemistry
- Beijing Normal University
- Beijing 100875
- China
| | - Jing He
- College of Chemistry
- Beijing Normal University
- Beijing 100875
- China
| | - Xiaonan Li
- College of Chemistry
- Beijing Normal University
- Beijing 100875
- China
| | - Ying Wang
- College of Chemistry
- Beijing Normal University
- Beijing 100875
- China
| | - Xuebo Chen
- College of Chemistry
- Beijing Normal University
- Beijing 100875
- China
| | - Di Sun
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan 250100
- China
| | - Hua Jiang
- College of Chemistry
- Beijing Normal University
- Beijing 100875
- China
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21
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Umerani MJ, Yang H, Pratakshya P, Nowick JS, Gorodetsky AA. An aza-Diels–Alder route to quinoline-based unnatural amino acids and polypeptide surrogates. RSC Adv 2021. [DOI: 10.1039/d0ra04783j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The synthesis of quinoline-based unnatural amino acids and the subsequent preparation of polypeptide surrogates from these building blocks on solid support.
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Affiliation(s)
- M. J. Umerani
- Department of Materials Science and Engineering
- University of California, Irvine
- Irvine
- USA
| | - H. Yang
- Department of Chemistry
- University of California, Irvine
- Irvine
- USA
| | - P. Pratakshya
- Department of Chemistry
- University of California, Irvine
- Irvine
- USA
| | - J. S. Nowick
- Department of Chemistry
- University of California, Irvine
- Irvine
- USA
| | - A. A. Gorodetsky
- Department of Materials Science and Engineering
- University of California, Irvine
- Irvine
- USA
- Department of Chemistry
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22
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Wu B, Wu H, Zhou Y, Zheng D, Jia X, Fang L, Zhu L. Controlling Ultra‐Large Optical Asymmetry in Amorphous Molecular Aggregations. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202012224] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Bin Wu
- State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular Science Fudan University Shanghai 200438 China
| | - Hongwei Wu
- College of Chemistry, Chemical Engineering and Biotechnology Donghua University Shanghai 201620 China
| | - Yunyun Zhou
- State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular Science Fudan University Shanghai 200438 China
| | - Dongxiao Zheng
- State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular Science Fudan University Shanghai 200438 China
| | - Xiaoyong Jia
- Henan Key Laboratory of Photovoltaic Materials Henan University Kaifeng 475004 China
| | - Lei Fang
- Department of Chemistry Texas A&M University 3255 TAMU College Station TX 77843 USA
| | - Liangliang Zhu
- State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular Science Fudan University Shanghai 200438 China
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23
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Zhang MY, Liang X, Ni DN, Liu DH, Peng Q, Zhao CH. 2-(Dimesitylboryl)phenyl-Substituted [2.2]Paracyclophanes Featuring Intense and Sign-Invertible Circularly Polarized Luminescence. Org Lett 2020; 23:2-7. [DOI: 10.1021/acs.orglett.0c02463] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Meng-Yuan Zhang
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, P.R. China
| | - Xiao Liang
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P.R. China
| | - Dan-Ning Ni
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, P.R. China
| | - Di-Hong Liu
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, P.R. China
| | - Qian Peng
- Key Laboratory of Organic Solids, Beijing National Laboratory for Molecular Science (BNLMS), Beijing 100190, P. R. China
| | - Cui-Hua Zhao
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, P.R. China
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24
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Reine P, Ortuño AM, Mariz IFA, Ribagorda M, Cuerva JM, Campaña AG, Maçôas E, Miguel D. Simple Perylene Diimide Cyclohexane Derivative With Combined CPL and TPA Properties. Front Chem 2020; 8:306. [PMID: 32373591 PMCID: PMC7186504 DOI: 10.3389/fchem.2020.00306] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Accepted: 03/27/2020] [Indexed: 01/17/2023] Open
Abstract
In this work we describe the linear and non-linear (chiro)optical properties of an enantiopure bis-perylenediimide (PDI) cyclohexane derivative. This compound exhibits upconversion based on a two-photon absorption (TPA) process with a cross-section value of 70 GM together with emission of circularly polarized luminescence (CPL), showing a glum in the range of 10-3. This simple structure represents one of the scarce examples of purely organic compounds combining both TPA and CPL responses, together with large values of molar absorptivity and fluorescence quantum yield with emission in the 500-600 nm. Self-assembly induced by introduction of a poor solvent allows for a spectacular shift of the emission into the near-infrared (NIR, 650-750 nm) by formation of well-defined rotationally displaced dimers. Therefore, we are here presenting a versatile platform whose optical properties can be simply tuned by self-assembly or by functionalization of the electron-deficient aromatic core of PDIs.
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Affiliation(s)
- Pablo Reine
- Departamento de Química Orgánica, Facultad de Ciencias, Unidad de Excelencia de Química Aplicada a Biomedicina y Medioambiente (UEQ), Universidad de Granada, Granada, Spain
| | - Ana M Ortuño
- Departamento de Química Orgánica, Facultad de Ciencias, Unidad de Excelencia de Química Aplicada a Biomedicina y Medioambiente (UEQ), Universidad de Granada, Granada, Spain
| | - Inês F A Mariz
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal
| | - Maria Ribagorda
- Departamento de Química Orgánica, Facultad de Ciencias, C.U. Cantoblanco, Universidad Autónoma de Madrid, Madrid, Spain
| | - Juan M Cuerva
- Departamento de Química Orgánica, Facultad de Ciencias, Unidad de Excelencia de Química Aplicada a Biomedicina y Medioambiente (UEQ), Universidad de Granada, Granada, Spain
| | - Araceli G Campaña
- Departamento de Química Orgánica, Facultad de Ciencias, Unidad de Excelencia de Química Aplicada a Biomedicina y Medioambiente (UEQ), Universidad de Granada, Granada, Spain
| | - Emerlinda Maçôas
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal
| | - Delia Miguel
- Departamento de Fisicoquímica, Facultad de Farmacia, UEQ, Universidad de Granada, Granada, Spain
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25
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Zheng D, Yu C, Zheng L, Zhan Y, Jiang H. Absolute control of helicity at the C-termini in quinoline oligoamide foldamers by chiral oxazolylaniline moieties. CHINESE CHEM LETT 2020. [DOI: 10.1016/j.cclet.2019.07.061] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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26
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Juan A, Sun H, Qiao J, Guo J. Near-infrared light-controlled circularly polarized luminescence of self-organized emissive helical superstructures assisted by upconversion nanoparticles. Chem Commun (Camb) 2020; 56:13649-13652. [DOI: 10.1039/d0cc05910b] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The reversible switching of circularly polarized luminescence in a self-organized emissive helical superstructure using 980 nm NIR excitation light with different power intensities is reported for the first time.
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Affiliation(s)
- Ao Juan
- Key Laboratory of Carbon Fibers and Functional Polymers
- Ministry of Education, and College of Materials Science and Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Hao Sun
- Key Laboratory of Carbon Fibers and Functional Polymers
- Ministry of Education, and College of Materials Science and Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Jinghui Qiao
- Key Laboratory of Carbon Fibers and Functional Polymers
- Ministry of Education, and College of Materials Science and Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Jinbao Guo
- Key Laboratory of Carbon Fibers and Functional Polymers
- Ministry of Education, and College of Materials Science and Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
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27
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Yang L, Ma C, Kauffmann B, Li D, Gan Q. Absolute handedness control of oligoamide double helices by chiral oxazolylaniline induction. Org Biomol Chem 2020; 18:6643-6650. [DOI: 10.1039/d0ob01503b] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Aromatic oligoamide double helices bearing a chiral oxazolylaniline moiety were synthesized and their helix handedness was completely controlled (de > 99%).
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Affiliation(s)
- Ling Yang
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Wuhan
- P. R. China
| | - Chunmiao Ma
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Wuhan
- P. R. China
| | - Brice Kauffmann
- Université de Bordeaux
- CNRS
- INSERM
- IECB-UMS3033-US001
- Institut Européen de Chimie et Biologie
| | - Dongyao Li
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Wuhan
- P. R. China
| | - Quan Gan
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Wuhan
- P. R. China
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28
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Verreault D, Moreno K, Merlet É, Adamietz F, Kauffmann B, Ferrand Y, Olivier C, Rodriguez V. Hyper-Rayleigh Scattering as a New Chiroptical Method: Uncovering the Nonlinear Optical Activity of Aromatic Oligoamide Foldamers. J Am Chem Soc 2019; 142:257-263. [DOI: 10.1021/jacs.9b09890] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Dominique Verreault
- Institut des Sciences Moléculaires, UMR 5255 CNRS, Université de Bordeaux, 351 Cours de la Libération, F-33405 Talence Cedex, France
| | - Kevin Moreno
- Institut des Sciences Moléculaires, UMR 5255 CNRS, Université de Bordeaux, 351 Cours de la Libération, F-33405 Talence Cedex, France
| | - Éric Merlet
- Institut de Chimie et Biologie des Membranes et des Nano-objets, UMR 5248 CNRS, Université de Bordeaux, 2 rue Robert Escarpit, F-33600 Pessac, France
| | - Frédéric Adamietz
- Institut des Sciences Moléculaires, UMR 5255 CNRS, Université de Bordeaux, 351 Cours de la Libération, F-33405 Talence Cedex, France
| | - Brice Kauffmann
- Institut Européen de Chimie et Biologie, UMS 3033 CNRS, Université de Bordeaux, 2 rue Robert Escarpit, F-33600 Pessac, France
| | - Yann Ferrand
- Institut de Chimie et Biologie des Membranes et des Nano-objets, UMR 5248 CNRS, Université de Bordeaux, 2 rue Robert Escarpit, F-33600 Pessac, France
| | - Céline Olivier
- Institut des Sciences Moléculaires, UMR 5255 CNRS, Université de Bordeaux, 351 Cours de la Libération, F-33405 Talence Cedex, France
| | - Vincent Rodriguez
- Institut des Sciences Moléculaires, UMR 5255 CNRS, Université de Bordeaux, 351 Cours de la Libération, F-33405 Talence Cedex, France
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29
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Zheng L, Zheng D, Wang Y, Yu C, Zhang K, Jiang H. Chiral bisphosphine ligands based on quinoline oligoamide foldamers: application in asymmetric hydrogenation. Org Biomol Chem 2019; 17:9573-9577. [PMID: 31687733 DOI: 10.1039/c9ob01649j] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A series of chiral bisphosphine ligands were designed and synthesized based on single-handed quinoline oligoamide foldamers. The bisphosphine ligands can coordinate with Rh(cod)2BF4 in a 1 : 1 stoichiometry and the resulted chiral Rh(i) catalysts were applied in the asymmetric hydrogenation of α-dehydroamino acid esters, in which excellent conversions and promising levels of enantioselectivity were achieved.
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Affiliation(s)
- Lu Zheng
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, China. and International Healthcare Innovation Institute (Jiangmen), Jiangmen, China and School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, China
| | - Dan Zheng
- College of Chemistry, Beijing Normal University, Beijing, China
| | - Yanru Wang
- College of Chemistry, Beijing Normal University, Beijing, China
| | - Chengyuan Yu
- College of Chemistry, Beijing Normal University, Beijing, China
| | - Kun Zhang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, China. and International Healthcare Innovation Institute (Jiangmen), Jiangmen, China
| | - Hua Jiang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, China. and International Healthcare Innovation Institute (Jiangmen), Jiangmen, China and College of Chemistry, Beijing Normal University, Beijing, China
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30
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Zhao ZH, Liang X, He MX, Zhang MY, Zhao CH. Triarylborane-based [5]Helicenes with Full-Color Circularly Polarized Luminescence. Org Lett 2019; 21:9569-9573. [DOI: 10.1021/acs.orglett.9b03734] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Zheng-Hua Zhao
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, P. R. China
| | - Xiao Liang
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China
| | - Mao-Xia He
- Environment Research Institute, Shandong University, Qing Dao 266237, P. R. China
| | - Meng-Yuan Zhang
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, P. R. China
| | - Cui-Hua Zhao
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, P. R. China
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31
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Tateno K, Ono K, Kawai H. Fluorescent Short‐Stranded Helical Foldamers Based on L‐shaped Dibenzopyrrolo[1,2‐
a
][1,8]naphthyridine. Chemistry 2019; 25:15765-15771. [DOI: 10.1002/chem.201903538] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2019] [Revised: 09/08/2019] [Indexed: 01/27/2023]
Affiliation(s)
- Kotaro Tateno
- Department of ChemistryFaculty of ScienceTokyo University of Science 1–3 Kagurazaka Shinjuku-ku Tokyo 162-8601 Japan
| | - Kosuke Ono
- Department of ChemistryTokyo Institute of Technology 2–12-1 O-okayama, Meguro-ku Tokyo 152-8551 Japan
| | - Hidetoshi Kawai
- Department of ChemistryFaculty of ScienceTokyo University of Science 1–3 Kagurazaka Shinjuku-ku Tokyo 162-8601 Japan
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32
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Abel AS, Yu Mitrofanov A, Yakushev AA, Zenkov IS, Morozkov GV, Averin AD, Beletskaya IP, Michalak J, Brandès S, Bessmertnykh‐Lemeune A. 1,10‐Phenanthroline Carboxylic Acids for Preparation of Functionalized Metal‐Organic Frameworks. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900569] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Anton S. Abel
- Department of ChemistryM.V. Lomonosov Moscow State University 1–3 Leninskie gory Moscow 119991 Russia
- ICMUB, UMR6302 CNRSUniversité Bourgogne Franche-Comté 9 avenue A. Savary 21078 Dijon France
| | - Alexander Yu Mitrofanov
- Department of ChemistryM.V. Lomonosov Moscow State University 1–3 Leninskie gory Moscow 119991 Russia
- ICMUB, UMR6302 CNRSUniversité Bourgogne Franche-Comté 9 avenue A. Savary 21078 Dijon France
| | - Aleksei A. Yakushev
- Department of ChemistryM.V. Lomonosov Moscow State University 1–3 Leninskie gory Moscow 119991 Russia
| | - Ilya S. Zenkov
- Department of ChemistryM.V. Lomonosov Moscow State University 1–3 Leninskie gory Moscow 119991 Russia
- ICMUB, UMR6302 CNRSUniversité Bourgogne Franche-Comté 9 avenue A. Savary 21078 Dijon France
| | - Gleb V. Morozkov
- Department of ChemistryM.V. Lomonosov Moscow State University 1–3 Leninskie gory Moscow 119991 Russia
| | - Alexei D. Averin
- Department of ChemistryM.V. Lomonosov Moscow State University 1–3 Leninskie gory Moscow 119991 Russia
- Russian Academy of SciencesFrumkin Institute of Physical Chemistry and Electrochemistry Leninsky Pr. 31 Moscow 119071 Russia
| | - Irina P. Beletskaya
- Department of ChemistryM.V. Lomonosov Moscow State University 1–3 Leninskie gory Moscow 119991 Russia
- Russian Academy of SciencesFrumkin Institute of Physical Chemistry and Electrochemistry Leninsky Pr. 31 Moscow 119071 Russia
| | - Julien Michalak
- ICMUB, UMR6302 CNRSUniversité Bourgogne Franche-Comté 9 avenue A. Savary 21078 Dijon France
| | - Stéphane Brandès
- ICMUB, UMR6302 CNRSUniversité Bourgogne Franche-Comté 9 avenue A. Savary 21078 Dijon France
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33
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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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34
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Reine P, Campaña AG, Alvarez de Cienfuegos L, Blanco V, Abbate S, Mota AJ, Longhi G, Miguel D, Cuerva JM. Chiral double stapled o-OPEs with intense circularly polarized luminescence. Chem Commun (Camb) 2019; 55:10685-10688. [PMID: 31432053 DOI: 10.1039/c9cc04885e] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Intrinsically chiral double stapled ortho-oligo phenylene ethynylenes (o-OPEs) 1 show glum values up to 5.5 × 10-2, the second highest value ever observed for a simple organic molecule (SOM). DFT calculations of molecular spectra and properties encompassing electric and magnetic dipole transition moments account for these observations.
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Affiliation(s)
- Pablo Reine
- Department of Organic Chemistry, Faculty of Science, Universidad de Granada (UGR), Unidad de Excelencia de Química (UEQ), E-18071 Granada, Spain.
| | - Araceli G Campaña
- Department of Organic Chemistry, Faculty of Science, Universidad de Granada (UGR), Unidad de Excelencia de Química (UEQ), E-18071 Granada, Spain.
| | - Luis Alvarez de Cienfuegos
- Department of Organic Chemistry, Faculty of Science, Universidad de Granada (UGR), Unidad de Excelencia de Química (UEQ), E-18071 Granada, Spain.
| | - Victor Blanco
- Department of Organic Chemistry, Faculty of Science, Universidad de Granada (UGR), Unidad de Excelencia de Química (UEQ), E-18071 Granada, Spain.
| | - Sergio Abbate
- Department of Molecular and Translational Medicine, Università di Brescia, Brescia, Italy. and Istituto Nazionale di Ottica - CNR, Brescia Research Unit, via Branze 45, 25123 Brescia, Italy
| | - Antonio J Mota
- Department of Inorganic Chemistry, Faculty of Science, UGR-UEQ, Granada, Spain
| | - Giovanna Longhi
- Department of Molecular and Translational Medicine, Università di Brescia, Brescia, Italy. and Istituto Nazionale di Ottica - CNR, Brescia Research Unit, via Branze 45, 25123 Brescia, Italy
| | - Delia Miguel
- Department of Physical Chemistry, Faculty of Pharmacy, UGR-UEQ, Granada, Spain.
| | - Juan M Cuerva
- Department of Organic Chemistry, Faculty of Science, Universidad de Granada (UGR), Unidad de Excelencia de Química (UEQ), E-18071 Granada, Spain.
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35
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Merlet E, Moreno K, Tron A, McClenaghan N, Kauffmann B, Ferrand Y, Olivier C. Aromatic oligoamide foldamers as versatile scaffolds for induced circularly polarized luminescence at adjustable wavelengths. Chem Commun (Camb) 2019; 55:9825-9828. [PMID: 31360956 DOI: 10.1039/c9cc04697f] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Quinoline oligoamide foldamers appended with non-chiral fluorophores and derivatized with a camphanyl chiral inducer display strong chiroptical properties at tunable wavelengths as proved by CD and CPL spectroscopies. Induced CPL activity with high luminescence dissymmetry factors was observed in the visible range at wavelengths specific to the fluorophores.
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Affiliation(s)
- Eric Merlet
- Univ. Bordeaux, CNRS, Bordeaux INP, CBMN, UMR 5248, F-33600, Pessac, France.
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