1
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Gowda A, Pathak SK, Rohaley GAR, Acharjee G, Oprandi A, Williams R, Prévôt ME, Hegmann T. Organic chiral nano- and microfilaments: types, formation, and template applications. MATERIALS HORIZONS 2024; 11:316-340. [PMID: 37921354 DOI: 10.1039/d3mh01390a] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2023]
Abstract
Organic chiral nanofilaments are part of an important class of nanoscale chiral materials that has recently been receiving significant attention largely due to their potential use in applications such as optics, photonics, metameterials, and potentially a range of medical as well as sensing applications. This review will focus on key examples of the formation of such nano- and micro-filaments based on carbon nanofibers, polymers, synthetic oligo- and polypeptides, self-assembled organic molecules, and one prominent class of liquid crystals. The most critical aspects discussed here are the underlying driving forces for chiral filament formation, potentially answering why specific sizes and shapes are formed, what molecular design strategies are working equally well or rather differently among these materials classes, and what uses and applications are driving research in this fascinating field of materials science.
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Affiliation(s)
- Ashwathanarayana Gowda
- Advanced Materials and Liquid Crystal Institute, Kent State University, Kent, OH 44242, USA.
| | - Suraj Kumar Pathak
- Advanced Materials and Liquid Crystal Institute, Kent State University, Kent, OH 44242, USA.
| | - Grace A R Rohaley
- Advanced Materials and Liquid Crystal Institute, Kent State University, Kent, OH 44242, USA.
- Materials Science Graduate Program, Kent State University, Kent, OH 44242, USA
| | - Gourab Acharjee
- Department of Chemistry and Biochemistry, Kent State University, Kent, OH 44242, USA
| | - Andrea Oprandi
- Advanced Materials and Liquid Crystal Institute, Kent State University, Kent, OH 44242, USA.
- Materials Science Graduate Program, Kent State University, Kent, OH 44242, USA
| | - Ryan Williams
- Advanced Materials and Liquid Crystal Institute, Kent State University, Kent, OH 44242, USA.
- Materials Science Graduate Program, Kent State University, Kent, OH 44242, USA
| | - Marianne E Prévôt
- Advanced Materials and Liquid Crystal Institute, Kent State University, Kent, OH 44242, USA.
- Department of Chemistry and Biochemistry, Kent State University, Kent, OH 44242, USA
| | - Torsten Hegmann
- Advanced Materials and Liquid Crystal Institute, Kent State University, Kent, OH 44242, USA.
- Brain Health Research Institute, Kent State University, Kent, OH 44242, USA
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2
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Chen L, Li X, Tian T, Yang S, Wang H. Enantioseparation and mechanism study on baclofen by capillary electrophoresis and molecular modeling. J Pharm Biomed Anal 2023; 229:115371. [PMID: 36996616 DOI: 10.1016/j.jpba.2023.115371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 03/23/2023] [Accepted: 03/26/2023] [Indexed: 03/29/2023]
Abstract
Enantioselective analysis of chiral drugs plays a significant role in chemistry, biology and pharmacology. Baclofen, an antispasmodic chiral drug, has been widely studied due to the obvious differences in toxicity and medical activity between enantiomers. Herein, a simple and efficient method for separation of baclofen enantiomers by capillary electrophoresis was established without complicated sample derivatization and expensive instruments. Then, the molecular modeling and density functional theory were used to simulate and investigate the chiral resolution mechanism of electrophoresis, the calculated intermolecular forces were directly presented by visualization softwares. Moreover, the theoretical and experimental electronic circular dichroism (ECD) spectra of ionized baclofen were compared, and the configuration of dominant enantiomer in the nonracemic mixture can be determined by ECD signal intensity, which was proportional to the electrophoresis peak area difference of the corresponding enantiomer excess experiments. In this way, the peak order identification and configuration quantification of baclofen enantiomers in electrophoretic separation were successfully achieved without relying on a single standard.
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3
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Tran TKT, Adewuyi JA, Wang Y, Morales-Acosta MD, Mani T, Ung G, Zhao J. Anionic ligand-induced chirality in perovskite nanoplatelets. Chem Commun (Camb) 2023; 59:1485-1488. [PMID: 36655734 DOI: 10.1039/d2cc05469h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Perovskite materials passivated by chiral ligands have recently shown unique chiroptical activity with promising optoelectronic applications. However, the ligands have been limited to chiral amines. Here, chiral phosphate molecules have been exploited to synthesize CsPbBr3 nanoplatelets. The nanoplatelets showed a distinct circular dichroism signal and maintained their chiroptical properties after purification with anti-solvent.
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Affiliation(s)
- Thi Kim Tran Tran
- Department of Chemistry, University of Connecticut, 55 North Eagleville Rd., Storrs Mansfield, Connecticut 06269-3060, USA.
| | - Joseph A Adewuyi
- Department of Chemistry, University of Connecticut, 55 North Eagleville Rd., Storrs Mansfield, Connecticut 06269-3060, USA.
| | - Yongchen Wang
- Department of Chemistry, University of Connecticut, 55 North Eagleville Rd., Storrs Mansfield, Connecticut 06269-3060, USA.
| | - M Daniela Morales-Acosta
- Institute of Materials Science, University of Connecticut, Storrs Mansfield, Connecticut 06269, USA
| | - Tomoyasu Mani
- Department of Chemistry, University of Connecticut, 55 North Eagleville Rd., Storrs Mansfield, Connecticut 06269-3060, USA.
| | - Gaël Ung
- Department of Chemistry, University of Connecticut, 55 North Eagleville Rd., Storrs Mansfield, Connecticut 06269-3060, USA.
| | - Jing Zhao
- Department of Chemistry, University of Connecticut, 55 North Eagleville Rd., Storrs Mansfield, Connecticut 06269-3060, USA.
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4
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Gonçalves DPN, Ogolla T, Hegmann T. Chirality Transfer from an Innately Chiral Nanocrystal Core to a Nematic Liquid Crystal 2: Lyotropic Chromonic Liquid Crystals. Chemphyschem 2023; 24:e202200685. [PMID: 36197761 PMCID: PMC10092345 DOI: 10.1002/cphc.202200685] [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: 09/12/2022] [Revised: 10/04/2022] [Indexed: 02/03/2023]
Abstract
The importance of and the difference between molecular versus structural core chirality of substances that form nanomaterials, and their ability to transmit and amplify their chirality to and within a surrounding condensed medium is yet to be exactly understood. Here we demonstrate that neat as well as disodium cromoglycate (DSCG) surface-modified cellulose nanocrystals (CNCs) with both molecular and morphological core chirality can induce homochirality in racemic nematic lyotropic chromonic liquid crystal (rac-N-LCLC) tactoids. In comparison to the parent chiral organic building blocks, D-glucose, endowed only with molecular chirality, both CNCs showed a superior chirality transfer ability. Here, particularly the structurally compatible DSCG-modified CNCs prove to be highly effective since the surface DSCG moieties can insert into the DSCG stacks that constitute the racemic tactoids. Overall, this presents a highly efficient pathway for chiral induction in an aqueous medium and thus for understanding the origins of biological homochirality in a suitable experimental system.
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Affiliation(s)
- Diana P N Gonçalves
- Advanced Materials and Liquid Crystal Institute and, Department of Chemistry and Biochemistry, Kent State University, Kent, OH 44242-0001, USA
| | - Timothy Ogolla
- Materials Science Graduate Program, Kent State University, Kent, OH 44242-0001, USA
| | - Torsten Hegmann
- Advanced Materials and Liquid Crystal Institute and, Department of Chemistry and Biochemistry, Kent State University, Kent, OH 44242-0001, USA.,Materials Science Graduate Program, Kent State University, Kent, OH 44242-0001, USA
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5
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Poryvai A, Šmahel M, Švecová M, Nemati A, Shadpour S, Ulbrich P, Ogolla T, Liu J, Novotná V, Veverka M, Vejpravová J, Hegmann T, Kohout M. Chiral, Magnetic, and Photosensitive Liquid Crystalline Nanocomposites Based on Multifunctional Nanoparticles and Achiral Liquid Crystals. ACS NANO 2022; 16:11833-11841. [PMID: 35867644 DOI: 10.1021/acsnano.1c10594] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Nanoparticles serving as a multifunctional and multiaddressable dopant to modify the properties of liquid crystalline matrices are developed by combining cobalt ferrite nanocrystals with organic ligands featuring a robust photosensitive unit and a source of chirality from the natural pool. These nanoparticles provide a stable nanocomposite when dispersed in achiral liquid crystals, giving rise to chiral supramolecular structures that can respond to UV-light illumination, and, at the same time, the formed nanocomposite possesses strong magnetic response. We report on a nanocomposite that shows three additional functionalities (chirality and responsiveness to UV light and magnetic field) upon the introduction of a single dopant into achiral liquid crystals.
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Affiliation(s)
- Anna Poryvai
- Department of Organic Chemistry, University of Chemistry and Technology Prague, Technická 5, 16628 Prague 6, Czech Republic
| | - Michal Šmahel
- Department of Organic Chemistry, University of Chemistry and Technology Prague, Technická 5, 16628 Prague 6, Czech Republic
| | - Marie Švecová
- Department of Analytical Chemistry, University of Chemistry and Technology Prague, Technická 5, 16628 Prague 6, Czech Republic
| | - Ahlam Nemati
- Materials Science Graduate Program, Advanced Materials and Liquid Crystal Institute, Kent State University, Kent, Ohio 44242-0001, United States
| | - Sasan Shadpour
- Materials Science Graduate Program, Advanced Materials and Liquid Crystal Institute, Kent State University, Kent, Ohio 44242-0001, United States
| | - Pavel Ulbrich
- Department of Biochemistry and Microbiology, University of Chemistry and Technology Prague, Technická 3, 16628 Prague 6, Czech Republic
| | - Timothy Ogolla
- Materials Science Graduate Program, Advanced Materials and Liquid Crystal Institute, Kent State University, Kent, Ohio 44242-0001, United States
| | - Jiao Liu
- Materials Science Graduate Program, Advanced Materials and Liquid Crystal Institute, Kent State University, Kent, Ohio 44242-0001, United States
| | - Vladimíra Novotná
- Institute of Physics of the Czech Academy of Sciences, Na Slovance 2, 182 21 Prague 8, Czech Republic
| | - Miroslav Veverka
- Department of Condensed Matter Physics, Charles University, Ke Karlovu 5, 121 16 Prague 2, Czech Republic
| | - Jana Vejpravová
- Department of Condensed Matter Physics, Charles University, Ke Karlovu 5, 121 16 Prague 2, Czech Republic
| | - Torsten Hegmann
- Materials Science Graduate Program, Advanced Materials and Liquid Crystal Institute, Kent State University, Kent, Ohio 44242-0001, United States
- Brain Health Research Institute, Kent State University, Kent, Ohio 44242-0001, United States
- Department of Chemistry and Biochemistry, Kent State University, Kent, Ohio 44242-0001, United States
| | - Michal Kohout
- Department of Organic Chemistry, University of Chemistry and Technology Prague, Technická 5, 16628 Prague 6, Czech Republic
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6
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Ishii M, Mori T, Nakanishi W, Hill JP, Sakai H, Ariga K. Mechanical Tuning of Aggregated States for Conformation Control of Cyclized Binaphthyl at the Air-Water Interface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:6481-6490. [PMID: 35549351 DOI: 10.1021/acs.langmuir.2c00796] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
An air-water interface enables molecular assemblies and conformations to be controlled according to their intrinsic interactions and anisotropic stimuli. The chirality and conformation of binaphthyl derivatives have been controlled by tuning molecular aggregated states in solution. In this study, we have tuned molecular aggregated states of monobinaphthyldurene (MBD) by applying different mechanical stimuli to control the conformation at the air-water interface. Density functional theory calculations indicate that MBD exists essentially in two conformations, namely, 1-MBD (most stable) and 2-MBD (less stable). MBD was mechanically dissolved in appropriate lipid matrices using the Langmuir-Blodgett (LB) method, while pure MBD was self-assembled at the dynamic air-water interface in the absence of or by applying vortex motions (vortex LB method). In MBD mixed monolayer, surface pressure-molecular area measurements and atomic force microscopy observations suggest that separate lipids and MBD phases transform to mixed phases induced by the dissolution of MBD into the lipid matrices during mechanical compression at the air-water interface. Circular dichroism measurements indicate that molecular conformation changes from 1-MBD to 2-MBD in passing from a separated phase to a mixed MBD/lipid phase. In addition, the molecular aggregated states and conformations of MBD depend on the spreading volume and vortex flow rate when applying the vortex LB method. Molecular conformations and aggregated states of MBD could be controlled continuously by applying a mechanical stimulus at the air-water interface.
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Affiliation(s)
- Masaki Ishii
- Graduate School of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
- International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Taizo Mori
- International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
- Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
- Institute for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581, Japan
| | - Waka Nakanishi
- International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
- Molecular Design and Function Group, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan
| | - Jonathan P Hill
- Functional Chromophores Group, International Center for Materials Nanoarchitectonics, National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Hideki Sakai
- Graduate School of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Katsuhiko Ariga
- Graduate School of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
- International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
- Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
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7
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Vaňkátová P, Kubíčková A, Kalíková K. Enantioseparation of liquid crystals and their utilization as enantiodiscrimination materials. J Chromatogr A 2022; 1673:463074. [DOI: 10.1016/j.chroma.2022.463074] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 04/12/2022] [Accepted: 04/15/2022] [Indexed: 11/28/2022]
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8
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Qu R, Li G. Overview of Liquid Crystal Biosensors: From Basic Theory to Advanced Applications. BIOSENSORS 2022; 12:205. [PMID: 35448265 PMCID: PMC9032088 DOI: 10.3390/bios12040205] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Revised: 03/25/2022] [Accepted: 03/26/2022] [Indexed: 05/06/2023]
Abstract
Liquid crystals (LCs), as the remarkable optical materials possessing stimuli-responsive property and optical modulation property simultaneously, have been utilized to fabricate a wide variety of optical devices. Integrating the LCs and receptors together, LC biosensors aimed at detecting various biomolecules have been extensively explored. Compared with the traditional biosensing technologies, the LC biosensors are simple, visualized, and efficient. Owning to the irreplaceable superiorities, the research enthusiasm for the LC biosensors is rapidly rising. As a result, it is necessary to overview the development of the LC biosensors to guide future work. This article reviews the basic theory and advanced applications of LC biosensors. We first discuss different mesophases and geometries employed to fabricate LC biosensors, after which we introduce various detecting mechanisms involved in biomolecular detection. We then focus on diverse detection targets such as proteins, enzymes, nucleic acids, glucose, cholesterol, bile acids, and lipopolysaccharides. For each of these targets, the development history and state-of-the-art work are exhibited in detail. Finally, the current challenges and potential development directions of the LC biosensors are introduced briefly.
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Affiliation(s)
- Ruixiang Qu
- Intelligent Optical Imaging and Sensing Group, Zhejiang Laboratory, Hangzhou 311121, China
| | - Guoqiang Li
- Intelligent Optical Imaging and Sensing Group, Zhejiang Laboratory, Hangzhou 311121, China
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9
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Gong Y, Cao Z, Zhang Z, Liu R, Zhang F, Wei J, Yang Z. Chirality Inversion in Self-Assembled Nanocomposites Directed by Curvature-Mediated Interactions. Angew Chem Int Ed Engl 2022; 61:e202117406. [PMID: 34981650 DOI: 10.1002/anie.202117406] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Indexed: 11/05/2022]
Abstract
Nanoscale curvature-dependent interactions are of paramount importance in biological systems. Here, we report that nanoscale curvature plays an important role in regulating the chirality of self-assembled nanocomposites from chiral organic molecules and achiral nanoparticles. Specifically, we show that the supramolecular chirality of the nanocomposites markedly depends on the nanoparticle curvature, where small-sized nanoparticles of high curvature and large-sized nanoparticles of low curvature lead to nanocomposites with opposite chirality. Quantitative kinetic experiments and molecular dynamics simulations reveal that nanoparticle curvature plays a key role in promoting the pre-nucleation oligomerization of chiral molecules, which consequently regulates the supramolecular chirality of the nanocomposites. We anticipate that this study will aid in rational design of an artificial cooperative system giving rise to emergent assembling phenomena that can be surprisingly rich and often cannot be understood by studying the conventional noncooperative systems.
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Affiliation(s)
- Yanjun Gong
- School of Chemistry and Chemical Engineering, Key Laboratory of Colloid and Interface Chemistry of MOE, Shandong University, Jinan, 250100, P. R. China
| | - Zhaozhen Cao
- School of Chemistry and Chemical Engineering, Key Laboratory of Colloid and Interface Chemistry of MOE, Shandong University, Jinan, 250100, P. R. China
| | - Zongze Zhang
- School of Chemistry and Chemical Engineering, Key Laboratory of Colloid and Interface Chemistry of MOE, Shandong University, Jinan, 250100, P. R. China
| | - Rongjuan Liu
- School of Chemistry and Chemical Engineering, Key Laboratory of Colloid and Interface Chemistry of MOE, Shandong University, Jinan, 250100, P. R. China
| | - Fenghua Zhang
- School of Chemistry and Chemical Engineering, Key Laboratory of Colloid and Interface Chemistry of MOE, Shandong University, Jinan, 250100, P. R. China
| | - Jingjing Wei
- School of Chemistry and Chemical Engineering, Key Laboratory of Colloid and Interface Chemistry of MOE, Shandong University, Jinan, 250100, P. R. China
| | - Zhijie Yang
- School of Chemistry and Chemical Engineering, Key Laboratory of Colloid and Interface Chemistry of MOE, Shandong University, Jinan, 250100, P. R. China
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10
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Prasitwatcharakorn W, Rujirasereesakul C, Luanphaisarnnont T. Synthesis of 4-Aryl-1,2-Naphthoquinones via a Conjugate Addition-Oxidation Reaction Catalyzed by p-Toluenesulfonic Acid. RESULTS IN CHEMISTRY 2022. [DOI: 10.1016/j.rechem.2022.100319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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11
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Yuan J, Lu X, Zhang S, Zheng F, Deng Q, Han L, Lu Q. Molecular Chirality and Morphological Structural Chirality of Exogenous Chirality-Induced Liquid Crystalline Block Copolymers. Macromolecules 2022. [DOI: 10.1021/acs.macromol.1c02445] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jianan Yuan
- School of Chemical Science and Technology, Tongji University, Shanghai 200092, China
| | - Xuemin Lu
- Shanghai Key Lab of Electrical & Thermal Aging, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Songyang Zhang
- School of Chemical Science and Technology, Tongji University, Shanghai 200092, China
| | - Feng Zheng
- School of Chemical Science and Technology, Tongji University, Shanghai 200092, China
| | - Quanzheng Deng
- School of Chemical Science and Technology, Tongji University, Shanghai 200092, China
| | - Lu Han
- School of Chemical Science and Technology, Tongji University, Shanghai 200092, China
| | - Qinghua Lu
- School of Chemical Science and Technology, Tongji University, Shanghai 200092, China
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12
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Nemati A, Querciagrossa L, Callison C, Shadpour S, Nunes Gonçalves DP, Mori T, Cui X, Ai R, Wang J, Zannoni C, Hegmann T. Effects of shape and solute-solvent compatibility on the efficacy of chirality transfer: Nanoshapes in nematics. SCIENCE ADVANCES 2022; 8:eabl4385. [PMID: 35080976 PMCID: PMC8791610 DOI: 10.1126/sciadv.abl4385] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Chirality, as a concept, is well understood at most length scales. However, quantitative models predicting the efficacy of the transmission of chirality across length scales are lacking. We propose here a modus operandi for a chiral nanoshape solute in an achiral nematic liquid crystal host showing that that chirality transfer may be understood by unusually simple geometric considerations. This mechanism is based on the product of a pseudoscalar chirality indicator and of a geometric shape compatibility factor based on the two-dimensional isoperimetric quotients for each nanoshape solute. The model is tested on an experimental set of precisely engineered gold nanoshapes. These libraries of calculated and in-parallel acquired experimental data among related nanoshapes pave the way for predictive calculations of chirality transfer in nanoscale, macromolecular, and biological systems, from designing chiral discriminators and enantioselective catalysts to developing chiral metamaterials and understanding nature's innate ability to transfer homochirality across length scales.
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Affiliation(s)
- Ahlam Nemati
- Materials Science Graduate Program, Kent State University, Kent, OH, USA
- Advanced Materials and Liquid Crystal Institute, Kent State University, Kent, OH, USA
| | - Lara Querciagrossa
- Dipartimento di Chimica Industriale and INSTM, Università di Bologna, Bologna, Italy
| | - Corinne Callison
- Materials Science Graduate Program, Kent State University, Kent, OH, USA
- Advanced Materials and Liquid Crystal Institute, Kent State University, Kent, OH, USA
| | - Sasan Shadpour
- Materials Science Graduate Program, Kent State University, Kent, OH, USA
- Advanced Materials and Liquid Crystal Institute, Kent State University, Kent, OH, USA
| | | | - Taizo Mori
- Institute for Solid State Physics, The University of Tokyo, Tokyo, Japan
| | - Ximin Cui
- Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
| | - Ruoqi Ai
- Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
| | - Jianfang Wang
- Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
| | - Claudio Zannoni
- Dipartimento di Chimica Industriale and INSTM, Università di Bologna, Bologna, Italy
- Corresponding author. (C.Z.); (T.H.)
| | - Torsten Hegmann
- Materials Science Graduate Program, Kent State University, Kent, OH, USA
- Advanced Materials and Liquid Crystal Institute, Kent State University, Kent, OH, USA
- Department of Chemistry and Biochemistry, Kent State University, Kent, OH, USA
- Brain Health Research Institute, Kent State University, Kent, OH, USA
- Corresponding author. (C.Z.); (T.H.)
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13
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Liu R, Feng Z, Cheng C, Li H, Liu J, Wei J, Yang Z. Active Regulation of Supramolecular Chirality through Integration of CdSe/CdS Nanorods for Strong and Tunable Circular Polarized Luminescence. J Am Chem Soc 2022; 144:2333-2342. [DOI: 10.1021/jacs.1c12676] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Rongjuan Liu
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, People’s Republic of China
| | - Zhenyu Feng
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, People’s Republic of China
| | - Caikun Cheng
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, People’s Republic of China
| | - Hui Li
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, People’s Republic of China
| | - Jiaming Liu
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, People’s Republic of China
| | - Jingjing Wei
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, People’s Republic of China
| | - Zhijie Yang
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, People’s Republic of China
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14
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Zhang M, Wang Y, Zhou Y, Yuan H, Guo Q, Zhuang T. Amplifying inorganic chirality using liquid crystals. NANOSCALE 2022; 14:592-601. [PMID: 34850801 DOI: 10.1039/d1nr06036h] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Chiral inorganic nanostructures have drawn extensive attention thanks to their unique physical properties as well as multidisciplinary applications. Amplifying inorganic chirality using liquid crystals (LCs) is an efficient way to enhance the parented inorganic asymmetry owing to chirality transfer. Herein, the universal synthetic methods and structural characterizations of chiral inorganic-doped LC hybrids are introduced. Additionally, the current progress and status of recent experiment and theory research about chiral interactions between inorganic nanomaterials (e.g. metal, semiconductor, perovskite, and magnetic oxide) and LCs are summarized in this review. We further present representative applications of these new hybrids in the area of encryption, sensing, optics, etc. Finally, we provide perspectives on this field in terms of material variety, new synthesis, and future practice. It is envisaged that LCs will act as a pivotal part in the amplification of inorganic chirality with versatile applications.
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Affiliation(s)
- Mingjiang Zhang
- Division of Nanomaterials & Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemistry, University of Science and Technology of China, Hefei 230026, China.
| | - Yaxin Wang
- Division of Nanomaterials & Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemistry, University of Science and Technology of China, Hefei 230026, China.
| | - Yajie Zhou
- Division of Nanomaterials & Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemistry, University of Science and Technology of China, Hefei 230026, China.
| | - Honghan Yuan
- Division of Nanomaterials & Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemistry, University of Science and Technology of China, Hefei 230026, China.
- Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou 341000, China
| | - Qi Guo
- Division of Nanomaterials & Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemistry, University of Science and Technology of China, Hefei 230026, China.
| | - Taotao Zhuang
- Division of Nanomaterials & Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemistry, University of Science and Technology of China, Hefei 230026, China.
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15
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Gong Y, Cao Z, Zhang Z, Liu R, Zhang F, Wei J, Yang Z. Chirality Inversion in Self‐Assembled Nanocomposites Directed by Curvature‐Mediated Interactions. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202117406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yanjun Gong
- School of Chemistry and Chemical Engineering Key Laboratory of Colloid and Interface Chemistry of MOE Shandong University Jinan 250100 P. R. China
| | - Zhaozhen Cao
- School of Chemistry and Chemical Engineering Key Laboratory of Colloid and Interface Chemistry of MOE Shandong University Jinan 250100 P. R. China
| | - Zongze Zhang
- School of Chemistry and Chemical Engineering Key Laboratory of Colloid and Interface Chemistry of MOE Shandong University Jinan 250100 P. R. China
| | - Rongjuan Liu
- School of Chemistry and Chemical Engineering Key Laboratory of Colloid and Interface Chemistry of MOE Shandong University Jinan 250100 P. R. China
| | - Fenghua Zhang
- School of Chemistry and Chemical Engineering Key Laboratory of Colloid and Interface Chemistry of MOE Shandong University Jinan 250100 P. R. China
| | - Jingjing Wei
- School of Chemistry and Chemical Engineering Key Laboratory of Colloid and Interface Chemistry of MOE Shandong University Jinan 250100 P. R. China
| | - Zhijie Yang
- School of Chemistry and Chemical Engineering Key Laboratory of Colloid and Interface Chemistry of MOE Shandong University Jinan 250100 P. R. China
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16
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John N, Mariamma AT. Recent developments in the chiroptical properties of chiral plasmonic gold nanostructures: bioanalytical applications. Mikrochim Acta 2021; 188:424. [PMID: 34811580 PMCID: PMC8608422 DOI: 10.1007/s00604-021-05066-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Accepted: 10/14/2021] [Indexed: 11/25/2022]
Abstract
The presence of excess L-amino acid in the Murchison meteorite, circular polarization effect in the genesis of stars and existence of chirality in interstellar molecules contribute to the origin of life on earth. Chiral-sensitive techniques have been employed to untangle the secret of the symmetries of the universe, designing of effective secure drugs and investigation of chiral biomolecules. The relationship between light and chiral molecules was employed to probe and explore such molecules using spectroscopy techniques. The mutual interaction between electromagnetic spectrum and chirality of matter give rise to distinct optical response, which advances vital information contents in chiroptical spectroscopy. Chiral plasmonic gold nanoparticle exhibits distinctive circular dichroism peaks in broad wavelength range thereby crossing the limits of its characterization. The emergence of strong optical activity of gold nanosystem is related to its high polarizability, resulting in plasmonic and excitonic effects on incident photons. Inspired by the development of advanced chiral plasmonic nanomaterials and exploring its properties, this review gives an overview of various chiral gold nanostructures and the mechanism behind its chiroptical properties. Finally, we highlight the application of different chiral gold nanomaterials in the field of catalysis and medical applications with special emphasis to biosensing and biodetection.
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Affiliation(s)
- Nebu John
- The Post Graduate and Research Department of Chemistry, Mar Thoma College, Mahatma Gandhi University, Tiruvalla, 689103 Kerala India
| | - Anslin Thankachan Mariamma
- The Post Graduate Department of Mathematics, St. Gregorios College, University of Kerala, Kottarakara, 691531 Kerala India
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17
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Yang F, Liu X, Yang Z. Chiral Metal Nanoparticle Superlattices Enabled by Porphyrin-Based Supramolecular Structures. Angew Chem Int Ed Engl 2021; 60:14671-14678. [PMID: 33843119 DOI: 10.1002/anie.202103809] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Indexed: 12/31/2022]
Abstract
Herein, we show that chiral metal nanoparticle superlattices can be produced through coassembly of achiral metal nanoparticles and porphyrin-based organic molecules. This chirality transfer from molecules to nanoparticle superstructures across three orders of magnitude in length scale is enabled by the hetero chain-chain van der Waals interactions. As far as we know, these are the first chiral nanoparticle assemblies based on chirality transfer through weak van der Waals forces. The dimensionality of the nanoparticle superlattices (1D chiral chains, 2D chiral sheets (cones), and 3D chiral particles) can be controlled based on a same synthetic chiral porphyrin molecule. Metalation of these porphyrin molecules with zinc cations results in the switching of molecular packing from J-type to H-type, which thereby produces 1D chiral nanoparticle chains. Functionalization of these zinc porphyrins with oleylamine can induce the assembly of nanoparticles into 2D chiral nanoparticle sheets.
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Affiliation(s)
- Fei Yang
- School of Pharmaceutical Sciences, Shandong University, Jinan, 250012, P. R. China
| | - Xinyong Liu
- School of Pharmaceutical Sciences, Shandong University, Jinan, 250012, P. R. China
| | - Zhijie Yang
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, P. R. China
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18
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Gonçalves DPN, Hegmann T. Chirality Transfer from an Innately Chiral Nanocrystal Core to a Nematic Liquid Crystal: Surface‐Modified Cellulose Nanocrystals. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202105357] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Diana P. N. Gonçalves
- Advanced Materials and Liquid Crystal Institute Kent State University Kent OH 44242-0001 USA
| | - Torsten Hegmann
- Advanced Materials and Liquid Crystal Institute Kent State University Kent OH 44242-0001 USA
- Department of Chemistry and Biochemistry, Materials Science Graduate Program, and Brain Health Research Institute Kent State University Kent OH 44242-0001 USA
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19
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Gonçalves DPN, Hegmann T. Chirality Transfer from an Innately Chiral Nanocrystal Core to a Nematic Liquid Crystal: Surface-Modified Cellulose Nanocrystals. Angew Chem Int Ed Engl 2021; 60:17344-17349. [PMID: 33949085 DOI: 10.1002/anie.202105357] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Indexed: 12/16/2022]
Abstract
The vast majority of nanomaterials studied in light of their ability to transmit chirality to or amplify their chirality in a surrounding medium, constitute an achiral core with chirality solely installed at the surface by conjugation or encapsulation with optically active ligands. Here we present the inverse approach focusing on surface-modified cellulose nanocrystals (CNCs) with core chirality at both the molecular and the morphological level to quantify transmission and amplification of core chirality through space using a host nematic liquid crystal (N-LC) as reporter. We find that CNCs functionalized at the surface with achiral molecules, structurally related to the N-LC, exhibit better N-LC solubility, thereby serving as highly efficient chiral inducers. Moreover, functionalization with chiral molecules only marginally enhances the efficacy of helical distortion in the host N-LC matrix, indicating the high propensity of CNCs to transfer chirality from an inherently chiral core.
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Affiliation(s)
- Diana P N Gonçalves
- Advanced Materials and Liquid Crystal Institute, Kent State University, Kent, OH, 44242-0001, USA
| | - Torsten Hegmann
- Advanced Materials and Liquid Crystal Institute, Kent State University, Kent, OH, 44242-0001, USA.,Department of Chemistry and Biochemistry, Materials Science Graduate Program, and Brain Health Research Institute, Kent State University, Kent, OH, 44242-0001, USA
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20
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Yang F, Liu X, Yang Z. Chiral Metal Nanoparticle Superlattices Enabled by Porphyrin‐Based Supramolecular Structures. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202103809] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Fei Yang
- School of Pharmaceutical Sciences Shandong University Jinan 250012 P. R. China
| | - Xinyong Liu
- School of Pharmaceutical Sciences Shandong University Jinan 250012 P. R. China
| | - Zhijie Yang
- Key Laboratory of Colloid and Interface Chemistry Ministry of Education School of Chemistry and Chemical Engineering Shandong University Jinan 250100 P. R. China
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21
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Bhat SA, Rao DSS, Prasad SK, Yelamaggad CV. Chiral plasmonic liquid crystal gold nanoparticles: self-assembly into a circular dichroism responsive helical lamellar superstructure. NANOSCALE ADVANCES 2021; 3:2269-2279. [PMID: 36133755 PMCID: PMC9419753 DOI: 10.1039/d0na01070g] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Accepted: 02/19/2021] [Indexed: 05/09/2023]
Abstract
Owing to their proven and promising potential in various technological endeavors ranging from catalysis and sensing to invisibility cloaks made from metamaterials, chiral plasmonic superstructures resulting from the directed self-assembly of optically active metal nanoparticles (MNPs) have been pursued intensively in recent years. Several strategic efforts have emerged especially to accomplish advanced nanomaterials assembling into liquid crystalline (LC) helical structures, where MNPs are regularly packed in fluid/frozen arrays/layers or wires (columns). While the helical fluid columnar arrays (molecular wires) showing circular dichroism (CD) have been realized, the discovery of fluid chiral lamellar ordering, where the dielectric and conducting regimes are arranged alternatively, has hitherto remained highly elusive. Herein we report the first examples of monodisperse LC-gold NPs (LC-GNPs) self-assembling into a fluid/frozen lamellar structure exhibiting CD activity. Notably, these new, exceptional LC-GNPs have been realized by simple, hassle-free protocols that involve the room temperature addition of LC dimer-like arylamines to Au(iii), where the amines not only reduce Au(iii) to Au(0) but also bind strongly to the central GNP scaffold. Their molecular structure, mesomorphism, and ability to interact with circularly polarized light have been evidenced unambiguously and could play an important role in realizing metamaterials in the visible region.
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Affiliation(s)
- Sachin A Bhat
- Centre for Nano and Soft Matter Sciences (CeNS) P. B. No. 1329, Prof. U. R. Rao Road, Jalahalli Bengaluru 560012 India
- Department of Chemistry, Mangalore University Mangalagangotri 574 199 India
| | - D S Shankar Rao
- Centre for Nano and Soft Matter Sciences (CeNS) P. B. No. 1329, Prof. U. R. Rao Road, Jalahalli Bengaluru 560012 India
| | - S Krishna Prasad
- Centre for Nano and Soft Matter Sciences (CeNS) P. B. No. 1329, Prof. U. R. Rao Road, Jalahalli Bengaluru 560012 India
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22
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Xia Q, Meng L, He T, Huang G, Li BS, Tang BZ. Direct Visualization of Chiral Amplification of Chiral Aggregation Induced Emission Molecules in Nematic Liquid Crystals. ACS NANO 2021; 15:4956-4966. [PMID: 33660972 DOI: 10.1021/acsnano.0c09802] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Chiral amplification in liquid crystals (LCs) is a well-known strategy. However, current knowledge about the underlying mechanism was still lacking; in particular, how it was realized at the nano scale still remained to be revealed. Here, we provide systematical exploration of chiral amplification of chiral aggregation induced emission (AIE) molecules in LCs from direct visualization of their co-assemblies at the nano scale to theoretical calculation of the molecular packing modes on a single molecular level. Using AFM imaging,we directly visualized the co-assembly formed by chiral AIE molecules/LCs at the nano scale: the chiral AIE molecules self-assembled into helical fibers to serve as the helical template for LCs to bind, while the LCs helically bound to the helical fibers to form the co-assembly, giving the morphology of pearled necklaces or thick rods. Theoretical calculation suggested that chiral AIE molecules were packed into left-handed helical fibers with a large volume of empty space between neighboring molecules, which provided the binding cites for LCs. Structural analysis showed that the π-π stacking between aromatic groups from LCs and TPE groups and the σ-π hyperconjugation between LC aromatic groups and cholesterol aliphatic groups play an important role in stabilizing the binding of LCs in the confined space on the surface of the helical assemblies.
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Affiliation(s)
- Qing Xia
- Key Laboratory of New Lithium-Ion Battery and Mesoporous Material, College of Chemistry and Environmental Engineering, Shenzhen University, 1066 Xueyuan Avenue, Nanshan, Shenzhen 518055, China
| | - Luming Meng
- MOE Key Laboratory of Laser Life Science & Guangdong Provincial Key Laboratory of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou 510631, China
| | - Tingchao He
- College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Guangxi Huang
- Key Laboratory of New Lithium-Ion Battery and Mesoporous Material, College of Chemistry and Environmental Engineering, Shenzhen University, 1066 Xueyuan Avenue, Nanshan, Shenzhen 518055, China
| | - Bing Shi Li
- Key Laboratory of New Lithium-Ion Battery and Mesoporous Material, College of Chemistry and Environmental Engineering, Shenzhen University, 1066 Xueyuan Avenue, Nanshan, Shenzhen 518055, China
| | - Ben Zhong Tang
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
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23
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Perera K, Nemati A, Mann EK, Hegmann T, Jákli A. Converging Microlens Array Using Nematic Liquid Crystals Doped with Chiral Nanoparticles. ACS APPLIED MATERIALS & INTERFACES 2021; 13:4574-4582. [PMID: 33411492 DOI: 10.1021/acsami.0c21044] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Nematic liquid crystals of achiral molecules or racemic mixtures of chiral ones form flat films when suspended in submillimeter size grids and submerged under water. Recently, it has been shown (Popov et al., 2017) that films of nematic liquid crystals doped with chiral molecules adopt biconvex lens shapes underwater. The curved shape together with degenerate planar anchoring leads to a radial variation of the optical axis along the plane of the film, providing a Pancharatnam-Berry-type phase lens that modifies geometric optical imaging. Here, we describe nematic liquid crystal microlenses formed by the addition of chiral nanoparticles. It is found that the helical twisting power of the nanoparticles, the key factor to form the lens, is about 400 μm-1, greater than that of the strongest molecular chiral dopants. We demonstrate imaging capabilities and measure the shape as well as the focal length of the chiral nanoparticle-doped liquid crystal lens. We show that measuring the shape of the lens allows one to calculate the helical pitch of the chiral nematic liquid crystal and thus determine the helical twisting power of the chiral ligand-capped nanoparticles. Such measurements require the use of only nanograms of chiral nanoparticles, which is 3 orders of magnitude less than that required by conventional techniques. Since NPs are sensitive to external stimuli such as light and electric and magnetic fields, the use of chiral NPs may allow the achievement of tunable optical properties for such microlens arrays.
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Affiliation(s)
- Kelum Perera
- Physics Department, Kent State University, Kent, Ohio 44242, United States
| | - Ahlam Nemati
- Advanced Materials and Liquid Crystal Institute Kent State University, Kent, Ohio 44242, United States
- Materials Science Graduate Program, Kent State University, Kent, Ohio 44242, United States
| | - Elizabeth K Mann
- Physics Department, Kent State University, Kent, Ohio 44242, United States
- Materials Science Graduate Program, Kent State University, Kent, Ohio 44242, United States
| | - Torsten Hegmann
- Advanced Materials and Liquid Crystal Institute Kent State University, Kent, Ohio 44242, United States
- Materials Science Graduate Program, Kent State University, Kent, Ohio 44242, United States
- Department of Chemistry and Biochemistry, Kent State University, Kent, Ohio 44242, United States
- Brain Health Research Institute, Kent State University, Kent, Ohio 44242, United States
| | - Antal Jákli
- Physics Department, Kent State University, Kent, Ohio 44242, United States
- Advanced Materials and Liquid Crystal Institute Kent State University, Kent, Ohio 44242, United States
- Materials Science Graduate Program, Kent State University, Kent, Ohio 44242, United States
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24
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Yin L, Duan H, Chen T, Qi D, Deng J. Amino-acid-substituted polyacetylene-based chiral core–shell microspheres: helix structure induction and application for chiral resolution and adsorption. Polym Chem 2021. [DOI: 10.1039/d1py01067k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The random coil polymer was first compounded with substrate and induced it into helical structure subsequently.
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Affiliation(s)
- Lijie Yin
- State Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Ministry of Education of the People's Republic of China, School of Materials Science and Engineering & School of Textile Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Huimin Duan
- State Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Ministry of Education of the People's Republic of China, School of Materials Science and Engineering & School of Textile Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Tao Chen
- State Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Ministry of Education of the People's Republic of China, School of Materials Science and Engineering & School of Textile Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Dongming Qi
- State Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Ministry of Education of the People's Republic of China, School of Materials Science and Engineering & School of Textile Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Jianping Deng
- State Key Laboratory of Chemical Resource Engineering, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
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25
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Ishii M, Mori T, Nakanishi W, Hill JP, Sakai H, Ariga K. Helicity Manipulation of a Double-Paddled Binaphthyl in a Two-Dimensional Matrix Field at the Air-Water Interface. ACS NANO 2020; 14:13294-13303. [PMID: 33017149 DOI: 10.1021/acsnano.0c05093] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Molecular behavior and functionality are affected by their prevailing immediate environment. Molecular machines function according to conformational variations and have been studied largely in solution states. In order to access more highly complex functional molecular machines, it is necessary to analyze and control them in various environments. We have designed and synthesized a bisbinaphthyldurene (BBD) molecule that has two binaphthyl groups connected through a central durene moiety, allowing for the formation of several conformers. In density functional theory (DFT) calculations, BBD has five major conformers, denoted anti-1/anti-2/syn-1/syn-2/flat. It has been demonstrated that BBD exhibits different conformations in solution (anti-1 and syn-1) than on a gold surface (syn dimer and flat). In this work, the ratio of BBD conformations has been controlled in mixed monolayers with several different lipids at an air-water interface in order to compare conformational activity under different conditions. The conformations of BBD in transferred films obtained by using Langmuir-Blodgett techniques were estimated from circular dichroism spectra and DFT calculations. It has been found that the conformation of BBD in the mixed monolayer depends on its aggregated state, which has been controlled here by the mechanical properties and miscibility. In mixed monolayers with "hard" lipids having less miscibility with BBD as well as in cast film, BBD is self-aggregated and mostly forms stable anti-1 and syn-1 conformations, while unstable anti-2 and syn-2 conformers dominated in the more dispersed states involving "soft" lipids, which show good miscibility with BBD. Conformational changes in BBD are due to the formation of different aggregated states in each mixed monolayer according to the miscibility. Overall, BBD molecular conformations (and the resulting spectra) could be tuned by controlling the environment whether in solution, on a solid substrate, or in an admixture with lipids at the air-water interface.
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Affiliation(s)
- Masaki Ishii
- Graduate School of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
- International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Taizo Mori
- International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
- Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
- Institute for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581, Japan
| | - Waka Nakanishi
- International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Jonathan P Hill
- International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Hideki Sakai
- Graduate School of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Katsuhiko Ariga
- International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
- Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
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26
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Szustakiewicz P, Kowalska N, Grzelak D, Narushima T, Góra M, Bagiński M, Pociecha D, Okamoto H, Liz-Marzán LM, Lewandowski W. Supramolecular Chirality Synchronization in Thin Films of Plasmonic Nanocomposites. ACS NANO 2020; 14:12918-12928. [PMID: 32886482 PMCID: PMC7596782 DOI: 10.1021/acsnano.0c03964] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Mirror symmetry breaking in materials is a fascinating phenomenon that has practical implications for various optoelectronic technologies. Chiral plasmonic materials are particularly appealing due to their strong and specific interactions with light. In this work we broaden the portfolio of available strategies toward the preparation of chiral plasmonic assemblies, by applying the principles of chirality synchronization-a phenomenon known for small molecules, which results in the formation of chiral domains from transiently chiral molecules. We report the controlled cocrystallization of 23 nm gold nanoparticles and liquid crystal molecules yielding domains made of highly ordered, helical nanofibers, preferentially twisted to the right or to the left within each domain. We confirmed that such micrometer sized domains exhibit strong, far-field circular dichroism (CD) signals, even though the bulk material is racemic. We further highlight the potential of the proposed approach to realize chiral plasmonic thin films by using a mechanical chirality discrimination method. Toward this end, we developed a rapid CD imaging technique based on the use of polarized light optical microscopy (POM), which enabled probing the CD signal with micrometer-scale resolution, despite of linear dichroism and birefringence in the sample. The developed methodology allows us to extend intrinsically local effects of chiral synchronization to the macroscopic scale, thereby broadening the available tools for chirality manipulation in chiral plasmonic systems.
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Affiliation(s)
- Piotr Szustakiewicz
- Laboratory
of Organic Nanomaterials and Biomolecules, Faculty of Chemistry, University of Warsaw, Pasteura 1 Street, 02-093 Warsaw, Poland
| | - Natalia Kowalska
- Laboratory
of Organic Nanomaterials and Biomolecules, Faculty of Chemistry, University of Warsaw, Pasteura 1 Street, 02-093 Warsaw, Poland
| | - Dorota Grzelak
- Laboratory
of Organic Nanomaterials and Biomolecules, Faculty of Chemistry, University of Warsaw, Pasteura 1 Street, 02-093 Warsaw, Poland
| | - Tetsuya Narushima
- Institute
for Molecular Science (IMS) and The Graduate University for Advanced
Studies (SOKENDAI), 38
Nishigonaka, Myodaiji, Okazaki, Aichi 444-8585, Japan
| | - Monika Góra
- Laboratory
of Organic Nanomaterials and Biomolecules, Faculty of Chemistry, University of Warsaw, Pasteura 1 Street, 02-093 Warsaw, Poland
| | - Maciej Bagiński
- Laboratory
of Organic Nanomaterials and Biomolecules, Faculty of Chemistry, University of Warsaw, Pasteura 1 Street, 02-093 Warsaw, Poland
| | - Damian Pociecha
- Faculty
of Chemistry, University of Warsaw, 101 Żwirki i Wigury, 02-089 Warsaw, Poland
| | - Hiromi Okamoto
- Institute
for Molecular Science (IMS) and The Graduate University for Advanced
Studies (SOKENDAI), 38
Nishigonaka, Myodaiji, Okazaki, Aichi 444-8585, Japan
| | - Luis M. Liz-Marzán
- CIC
biomaGUNE, Basque Research and Technology
Alliance (BRTA), Paseo
de Miramón 182, Donostia-San Sebastián 20014, Spain
- Ikerbasque,
Basque Foundation for Science, 48013 Bilbao, Spain
- Centro
de Investigación en Biomédica Red de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Paseo de Miramón 182, Donostia-San Sebastián 20014, Spain
| | - Wiktor Lewandowski
- Laboratory
of Organic Nanomaterials and Biomolecules, Faculty of Chemistry, University of Warsaw, Pasteura 1 Street, 02-093 Warsaw, Poland
- (W.L.)
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27
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Lewandowski W, Vaupotič N, Pociecha D, Górecka E, Liz-Marzán LM. Chirality of Liquid Crystals Formed from Achiral Molecules Revealed by Resonant X-Ray Scattering. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1905591. [PMID: 32529663 DOI: 10.1002/adma.201905591] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 03/14/2020] [Accepted: 03/16/2020] [Indexed: 05/21/2023]
Abstract
Intensive research on chiral liquid crystals (LCs) has been fueled by their actively tunable physicochemical properties and structural complexity, comparable to those of sophisticated natural materials. Herein, recent progress in the discovery of new classes of chiral LCs, enabled by a combination of nano- and macroscale investigations is reviewed. First, an overview is provided of liquid crystalline phases, made of chiral and achiral low-weight molecules, that exhibit chiral structure and/or chiral morphology. Then, recent progress in the discovery of new classes of chiral LCs, particularly enabled by the application of resonant X-ray scattering is described. It is shown that the method is sensitive to modulations of molecular orientation and therefore provides information hardly accessible by means of other techniques, such as the sense of helical structures or chirality transfer across length scales. Finally, a perspective is presented on the future scope, opportunities, and challenges in the field of chiral LCs, in particular related to nanocomposites.
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Affiliation(s)
- Wiktor Lewandowski
- Faculty of Chemistry, University of Warsaw, Pasteura 1 St., Warsaw, 02-093, Poland
| | - Nataša Vaupotič
- Department of Physics, University of Maribor, Koroška 160, Maribor, 2000, Slovenia
- Jozef Stefan Institute, Jamova 39, Ljubljana, 1000, Slovenia
| | - Damian Pociecha
- Faculty of Chemistry, University of Warsaw, Pasteura 1 St., Warsaw, 02-093, Poland
| | - Ewa Górecka
- Faculty of Chemistry, University of Warsaw, Pasteura 1 St., Warsaw, 02-093, Poland
| | - Luis M Liz-Marzán
- CIC biomaGUNE and CIBER-BBN, Paseo de Miramón 182, Donostia-San Sebastián, 20014, Spain
- Ikerbasque, Basque Foundation for Science, Bilbao, 48013, Spain
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28
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Ji YY, Fan F, Zhang X, Cheng JR, Chang SJ. Terahertz birefringence anisotropy and relaxation effects in polymer-dispersed liquid crystal doped with gold nanoparticles. OPTICS EXPRESS 2020; 28:17253-17265. [PMID: 32679937 DOI: 10.1364/oe.392773] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Accepted: 05/19/2020] [Indexed: 05/27/2023]
Abstract
Terahertz (THz) birefringence anisotropy of the polymer-dispersed liquid crystal (PDLC) doped with gold nanoparticles (Au NPs) is investigated by using terahertz time domain polarization spectroscopy. Controlled by the electric field, the change rate of refractive index for PDLC doped with Au NPs is 0.91% V-1 as the voltage increases, smaller than the pure PDLC, which indicates that the response of the PDLC doped with Au NPs to electric field is more uniform than that of pure PDLC. Therefore, the PDLC doped with Au NPs is more suitable for tunable phase shifters. Furthermore, we found that under the high-frequency alternating electric field, the anisotropic polarization effect of PDLC will disappear to this electric field, namely polarization relaxation phenomenon. However, the results show that the PDLC doped with Au NPs can respond to an electric field with higher alternating frequencies, and the relaxation frequency of PDLC with an Au NPs concentration of 0.2 wt% was improved over two times compared with the pure PDLC and four times higher than that of the precursor mixture without ultraviolet radiation. This work has the significance for the potential applications of tunable THz liquid crystal phase and polarization devices, providing a more uniform and faster relaxation response to the operating electric field.
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Shadpour S, Nemati A, Liu J, Hegmann T. Directing the Handedness of Helical Nanofilaments Confined in Nanochannels Using Axially Chiral Binaphthyl Dopants. ACS APPLIED MATERIALS & INTERFACES 2020; 12:13456-13463. [PMID: 32092259 DOI: 10.1021/acsami.9b20696] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
In this work, we demonstrate control of the handedness of semicrystalline modulated helical nanofilaments (HNFmods) formed by achiral bent-core liquid crystal molecules by axially chiral binaphthyl-based additives as guest molecules solely under spatial nanoconfinement in anodic aluminum oxide nanochannels. The molecules of the same chiral additives are expelled from the HNFmods in the bulk, and as a result thereof do not affect the handedness or helical pitch of bulk HNFmods, resulting in an HNFmod conglomerate with chirality-preserving growth within each domain. However, under confinement these axially chiral guest molecules, likely embedded in the HNFmod host, do affect the helicity of the HNFmods. The configuration of the axially chiral molecules decides the HNFmod helix handedness and their concentration, and the helix angle is related to the helical pitch of the HNFmods. In addition to local imaging data obtained by scanning electron microscopy, global studies by thin-film circular dichroism spectropolarimetry support the imaging results.
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Affiliation(s)
- Sasan Shadpour
- Chemical Physics Interdisciplinary Program, Advanced Materials and Liquid Crystal Institute, Kent State University, Kent, Ohio 44242-0001, United States
| | - Ahlam Nemati
- Chemical Physics Interdisciplinary Program, Advanced Materials and Liquid Crystal Institute, Kent State University, Kent, Ohio 44242-0001, United States
| | - Jiao Liu
- Chemical Physics Interdisciplinary Program, Advanced Materials and Liquid Crystal Institute, Kent State University, Kent, Ohio 44242-0001, United States
| | - Torsten Hegmann
- Chemical Physics Interdisciplinary Program, Advanced Materials and Liquid Crystal Institute, Kent State University, Kent, Ohio 44242-0001, United States
- Department of Chemistry and Biochemistry, Kent State University, Kent, Ohio 44242-0001, United States
- Brain Health Research Institute, Kent State University, Kent, Ohio 44242-0001, United States
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Tsuchiya T, Katsuoka Y, Yoza K, Sato H, Mazaki Y. Stereochemistry, Stereodynamics, and Redox and Complexation Behaviors of 2,2'-Diaryl-1,1'-Biazulenes. Chempluschem 2020; 84:1659-1667. [PMID: 31943874 DOI: 10.1002/cplu.201900262] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 06/25/2019] [Indexed: 11/11/2022]
Abstract
2,2'-Diaryl-1,1'-biazulenes were synthesized and electronic communication between the azulene subunits was suggested based on redox measurements. The linkage of azulene at the 1-position also appeared to increase the HOMO levels. In addition, cyclic voltammetry measurements of 2-arylazulenes showed a return peak associated with the oxidation, which was not observed for azulene. The stabilization of the single-electron oxidant may be due to the SOMO-HOMO energy inversion phenomenon. X-ray crystallography of the azulene dimers revealed that this species possessed a syn-type structure in which both aryl groups in the 2-positions formed π-stacks. The twisted structure was indicated to be in the (R)- or (S)-configuration for all molecules in the unit cell. Spontaneous resolution was also shown. Furthermore, from the solid circular dichroism (CD) spectral measurements, the relationship between the absolute configuration of the molecules and the CD spectra was determined. A racemization rotational barrier of ca. 27 kcal mol-1 was calculated. Moreover, the pyridylazulene dimer cyclized upon reaction with PdCl2 to form a 3 : 3 complex, in which the biazulene units cyclized to give ratios between the (R)- and (S)-forms of either 2 : 1 or 1 : 2.
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Affiliation(s)
- Takahiro Tsuchiya
- Department of Chemistry, Graduate School of Science, Kitasato University, 1-15-1 Kitasato, Minami-ku, Sagamihara, Kanagawa, 252-0373, Japan
| | - Yuka Katsuoka
- Department of Chemistry, Graduate School of Science, Kitasato University, 1-15-1 Kitasato, Minami-ku, Sagamihara, Kanagawa, 252-0373, Japan
| | - Kenji Yoza
- Bruker Japan, 3-9 Moriya-cho, Kanagawa-ku, Yokohama, 221-0022, Japan
| | - Hiroyasu Sato
- Rigaku Corporation, 3-9-12 Matsubara, Akishima, Tokyo, 196-8666, Japan
| | - Yasuhiro Mazaki
- Department of Chemistry, Graduate School of Science, Kitasato University, 1-15-1 Kitasato, Minami-ku, Sagamihara, Kanagawa, 252-0373, Japan
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31
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Yue B, Yin L, Zhao W, Jia X, Zhu M, Wu B, Wu S, Zhu L. Chirality Transfer in Coassembled Organogels Enabling Wide-Range Naked-Eye Enantiodifferentiation. ACS NANO 2019; 13:12438-12444. [PMID: 31560190 DOI: 10.1021/acsnano.9b06250] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Enantiodifferentiation is crucial in organic chemistry, pharmacochemistry, material chemistry, and life science. However, it remains tremendously challenging to achieve a broad enantioselectivity to different types of chiral substrates via a single-material design. Here, we report a coassembled organogel strategy with chirality transfer to make an enantioselective generality possible. This coassembly contains two components: a chiral rigid molecular linker and an achiral block copolymer. Different from routine helically packed chiral self-assemblies, chirality transfer from the linker to the copolymer directed the coassembly to form a phase-segregated twisted nanofiber, in cooperation with H-bonding and microphase segregation. An organogel was accordingly formed by the further cross-linking in ethanol, where the rigid chiral linker served as the scaffold. On this basis, the system becomes highly sensitive, enabling a naked-eye sensing toward the single enantiomer of a diverse series of chiral species (including axial, point, planar, and polymeric chirality) via gel-to-micelle transformation, due to the asymmetric interaction hampering the chirality transfer in the coassembly and destroying the hierarchical structure. Such a strategy, based on a significant amplification of the stereoselective interactions, facilitates a simple and straightforward way to distinguish a broad optical activity independent of devices.
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Affiliation(s)
- Bingbing Yue
- Key Laboratory of Molecular Engineering of Polymer, Department of Macromolecular Science , Fudan University , Shanghai 200438 , China
- Max-Planck-Institut für Polymerforschung , Ackermannweg 10 , Mainz 55128 , Germany
- College of Science , University of Shanghai for Science and Technology , No. 334 Jungong Road , Shanghai 200093 , China
| | - Liyuan Yin
- Key Laboratory of Molecular Engineering of Polymer, Department of Macromolecular Science , Fudan University , Shanghai 200438 , China
| | - Wandong Zhao
- Key Laboratory of Molecular Engineering of Polymer, Department of Macromolecular Science , Fudan University , Shanghai 200438 , China
| | - Xiaoyong Jia
- Key Laboratory of Molecular Engineering of Polymer, Department of Macromolecular Science , Fudan University , Shanghai 200438 , China
- Henan Key Laboratory of Photovoltaic Materials , Henan University , Kaifeng 475004 , China
| | - Mingjie Zhu
- Key Laboratory of Molecular Engineering of Polymer, Department of Macromolecular Science , Fudan University , Shanghai 200438 , China
| | - Bin Wu
- Key Laboratory of Molecular Engineering of Polymer, Department of Macromolecular Science , Fudan University , Shanghai 200438 , China
| | - Si Wu
- Key Laboratory of Molecular Engineering of Polymer, Department of Macromolecular Science , Fudan University , Shanghai 200438 , China
- Max-Planck-Institut für Polymerforschung , Ackermannweg 10 , Mainz 55128 , Germany
| | - Liangliang Zhu
- Key Laboratory of Molecular Engineering of Polymer, Department of Macromolecular Science , Fudan University , Shanghai 200438 , China
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Chen L, Zheng J, Feng J, Qian Q, Zhou Y. Reversible modulation of plasmonic chiral signals of achiral gold nanorods using a chiral supramolecular template. Chem Commun (Camb) 2019; 55:11378-11381. [PMID: 31478536 DOI: 10.1039/c9cc06050b] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
We report here the fabrication of a multiple stimuli-responsive chiral plasmonic system based on the reversible self-assembly of phenylboronic acid-capped gold nanorods (PBA-Au NRs) guided by a supramolecular glycopeptide mimetic template. The plasmonic chiral signals of PBA-Au NRs can be reversibly switched on and off by temperature, light, pH and glucose concentration variations.
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Affiliation(s)
- Limin Chen
- School of Ophthalmology and Optometry, Eye Hospital, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou 325000, P. R. China. and Engineering Research Center of Clinical Functional Materials and Diagnosis & Treatment Devices of Zhejiang Province, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325000, P. R. China
| | - Jing Zheng
- Engineering Research Center of Clinical Functional Materials and Diagnosis & Treatment Devices of Zhejiang Province, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325000, P. R. China
| | - Jie Feng
- Engineering Research Center of Clinical Functional Materials and Diagnosis & Treatment Devices of Zhejiang Province, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325000, P. R. China
| | - Qiuping Qian
- Engineering Research Center of Clinical Functional Materials and Diagnosis & Treatment Devices of Zhejiang Province, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325000, P. R. China
| | - Yunlong Zhou
- School of Ophthalmology and Optometry, Eye Hospital, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou 325000, P. R. China. and Engineering Research Center of Clinical Functional Materials and Diagnosis & Treatment Devices of Zhejiang Province, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325000, P. R. China
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Nemati A, Shadpour S, Querciagrossa L, Mori T, Zannoni C, Hegmann T. Highly Sensitive, Tunable Chirality Amplification through Space Visualized for Gold Nanorods Capped with Axially Chiral Binaphthyl Derivatives. ACS NANO 2019; 13:10312-10326. [PMID: 31424907 DOI: 10.1021/acsnano.9b03787] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The creation and transmission of chirality in molecular systems is a well-known, widely applied notion. Our understanding of how the chirality of nanomaterials can be controlled, measured, transmitted through space, and applied is less well understood. Dynamic assemblies for chiral sensing or metamaterials engineered from chiral nanomaterials require exact methods to determine transmission and amplification of nanomaterial chirality through space. We report the synthesis of a series of gold nanorods (GNRs) with a constant aspect ratio of ∼4.3 capped with C2-symmetric, axially chiral binaphthyl thiols, preparation of dispersions in the nematic liquid crystal 5CB, measurements of the helical pitch, and the determination of the helical twisting power as well as the average distance between the chiral nanomaterial additives. By comparison to the neat organic chiral derivatives, we demonstrate how the amplification of chirality facilitated by GNRs decorated with chiral molecules can be used to clearly distinguish the chiral induction strength of a homologous series of binaphthyl derivatives, differing only in the length of the nontethered aliphatic chain, in the induced chiral nematic liquid crystal phase. Considering systematic errors in sample preparation and optical measurements, these chiral molecules would otherwise be deemed identical with respect to chiral induction. Notably, we find some of the highest ever-reported values of the helical twisting power. We further support our experimentally derived arguments of a more comprehensive understanding of chirality transfer by calculations of a suitable pseudoscalar chirality indicator.
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Affiliation(s)
- Ahlam Nemati
- Advanced Materials and Liquid Crystal Institute, Chemical Physics Interdisciplinary Program , Kent State University , Kent , Ohio 44242 , United States
| | - Sasan Shadpour
- Advanced Materials and Liquid Crystal Institute, Chemical Physics Interdisciplinary Program , Kent State University , Kent , Ohio 44242 , United States
| | - Lara Querciagrossa
- Dipartimento di Chimica Industriale "Toso Montanari" and INSTM , Università di Bologna , Viale Risorgimento 4 , IT-40136 Bologna , Italy
| | - Taizo Mori
- Graduate School of Frontier Science , The University of Tokyo , 5-1-5, Kashiwanoha , Kashiwa 277-0827 , Japan
| | - Claudio Zannoni
- Dipartimento di Chimica Industriale "Toso Montanari" and INSTM , Università di Bologna , Viale Risorgimento 4 , IT-40136 Bologna , Italy
| | - Torsten Hegmann
- Advanced Materials and Liquid Crystal Institute, Chemical Physics Interdisciplinary Program , Kent State University , Kent , Ohio 44242 , United States
- Department of Chemistry and Biochemistry , Kent State University , Kent , Ohio 44242 , United States
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Eun J, Kim SJ, Jeong J. Effects of chiral dopants on double-twist configurations of lyotropic chromonic liquid crystals in a cylindrical cavity. Phys Rev E 2019; 100:012702. [PMID: 31499771 DOI: 10.1103/physreve.100.012702] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Indexed: 06/10/2023]
Abstract
We investigate how chiral dopants affect the chiral symmetry breaking of lyotropic chromonic liquid crystals (LCLCs) focusing on the double-twist (DT) director configurations in a cylindrical capillary. LCLCs of unusual elastic properties tend to exhibit chiral director configurations under confinement despite the absence of intrinsic chirality. The DT director configuration in a cylindrical cavity with a degenerate planar anchoring, resulting from the large saddle-splay-to-twist elastic modulus ratio, is a representative example. Here we start by reexamining the DT configuration of nematic disodium cromoglycate in a cylindrical capillary and estimate the ratio of saddle splay to bend modulus K_{24}/K_{3}=0.5±0.1. Additionally, we study the DT configurations of the chiral nematic LCLCs with chiral dopants. The DT configuration becomes homochiral when the dopant concentration surpasses the critical concentration. We characterize these chiral DT configurations and provide a theoretical model on their energetics. Finally, we observe how the enantiomeric excess of chiral dopants determines the director configuration when dopants of two different handednesses are mixed.
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Affiliation(s)
- Jonghee Eun
- Department of Physics, Ulsan National Institute of Science and Technology, Ulsan, Republic of Korea
| | - Sung-Jo Kim
- Center for Soft and Living Matter, Institute for Basic Science, Ulsan, Republic of Korea
| | - Joonwoo Jeong
- Department of Physics, Ulsan National Institute of Science and Technology, Ulsan, Republic of Korea
- Center for Soft and Living Matter, Institute for Basic Science, Ulsan, Republic of Korea
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35
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Zhang J, Liu Q, Wu W, Peng J, Zhang H, Song F, He B, Wang X, Sung HHY, Chen M, Li BS, Liu SH, Lam JWY, Tang BZ. Real-Time Monitoring of Hierarchical Self-Assembly and Induction of Circularly Polarized Luminescence from Achiral Luminogens. ACS NANO 2019; 13:3618-3628. [PMID: 30835442 DOI: 10.1021/acsnano.9b00218] [Citation(s) in RCA: 75] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Constructing artificial helical structures through hierarchical self-assembly and exploring the underlying mechanism are important, and they help gain insight from the structures, processes, and functions from the biological helices and facilitate the development of material science and nanotechnology. Herein, the two enantiomers of chiral Au(I) complexes ( S)-1 and ( R)-1 were synthesized, and they exhibited impressive spontaneous hierarchical self-assembly transitions from vesicles to helical fibers. An impressive chirality inversion and amplification was accompanied by the assembly transition, as elucidated by the results of in situ and time-dependent circular dichroism spectroscopy and scanning electron microscope imaging. The two enantiomers could serve as ideal chiral templates to co-assemble with other achiral luminogens to efficiently induce the resulting co-assembly systems to show circularly polarized luminescence (CPL). Our work has provided a simple but efficient way to explore the sophisticated self-assembly process and presented a facile and effective strategy to fabricate architectures with CPL properties.
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Affiliation(s)
- Jing Zhang
- 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 Biological Engineering , The Hong Kong University of Science and Technology , Clear Water Bay , Kowloon , 999077 , Hong Kong, China
| | - Qiuming Liu
- College of Chemistry and Environmental Engineering , Shenzhen University , Shenzhen 518060 , China
- Center for Aggregation-Induced Emission, SCUT-HKUST Joint Research Institute, State Key Laboratory of Luminescent Materials and Devices , South China University of Technology , Guangzhou 510640 , China
| | - Wenjie Wu
- 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 Biological Engineering , The Hong Kong University of Science and Technology , Clear Water Bay , Kowloon , 999077 , Hong Kong, China
| | - Junhui Peng
- 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 Biological Engineering , The Hong Kong University of Science and Technology , Clear Water Bay , Kowloon , 999077 , Hong Kong, China
| | - Haoke Zhang
- 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 Biological Engineering , The Hong Kong University of Science and Technology , Clear Water Bay , Kowloon , 999077 , Hong Kong, China
| | - Fengyan Song
- 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 Biological Engineering , The Hong Kong University of Science and Technology , Clear Water Bay , Kowloon , 999077 , Hong Kong, China
| | - Benzhao He
- 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 Biological Engineering , The Hong Kong University of Science and Technology , Clear Water Bay , Kowloon , 999077 , Hong Kong, China
| | - Xiaoyan Wang
- Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry , Central China Normal University , Wuhan 430079 , China
| | - Herman H-Y Sung
- 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 Biological Engineering , The Hong Kong University of Science and Technology , Clear Water Bay , Kowloon , 999077 , Hong Kong, China
| | - Ming Chen
- 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 Biological Engineering , The Hong Kong University of Science and Technology , Clear Water Bay , Kowloon , 999077 , Hong Kong, China
| | - Bing Shi Li
- College of Chemistry and Environmental Engineering , Shenzhen University , Shenzhen 518060 , China
| | - Sheng Hua Liu
- Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry , Central China Normal University , Wuhan 430079 , 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 Biological Engineering , The Hong Kong University of Science and Technology , Clear Water Bay , Kowloon , 999077 , Hong Kong, 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 Biological Engineering , The Hong Kong University of Science and Technology , Clear Water Bay , Kowloon , 999077 , Hong Kong, China
- Center for Aggregation-Induced Emission, SCUT-HKUST Joint Research Institute, State Key Laboratory of Luminescent Materials and Devices , South China University of Technology , Guangzhou 510640 , China
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Merekalov A, Shandryuk G, Bezborodov V, Otmakhova O, Mikhalyonok S, Kuz'menok N, Arol A, Osipov M, Talroze R. Three in one: Mesogenic aromatic acid as a liquid crystal matrix, a chiral dopant in liquid crystals and a stabilizer for nanoparticles. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2018.12.036] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Shadpour S, Vanegas JP, Nemati A, Hegmann T. Amplification of Chirality by Adenosine Monophosphate-Capped Luminescent Gold Nanoclusters in Nematic Lyotropic Chromonic Liquid Crystal Tactoids. ACS OMEGA 2019; 4:1662-1668. [PMID: 31459422 PMCID: PMC6648145 DOI: 10.1021/acsomega.8b03335] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Accepted: 01/08/2019] [Indexed: 06/01/2023]
Abstract
Amplification of chirality across length scales is a key concept pertinent to many models aiming to unravel the origin of homochirality. Tactoids of lyotropic chromonic liquid crystals formed by DNA, dyes, and other flat ionic molecules in water in the biphasic nematic + isotropic regime turn out to be a particularly relevant system to investigate chirality transfer and amplification. Herein, we present experiments to determine the amplification of chirality by luminescent gold nanoclusters decorated with adenosine monophosphate inducing chiral nematic tactoids formed by disodium cromoglycate in water. Polarized optical microscopy investigations of the induced homochiral tactoids reveal that adenosine monophosphate shows a higher optical activity when bound to the surface of such gold nanoclusters in comparison to free adenosine monophosphate, despite a three-time lower overall concentration. Free adenosine monophosphate also induces the opposite chiral twist both in the bulk nematic phase as shown by induced thin film circular dichroism spectropolarimetry and in the tactoids in comparison to adenosine monophosphate bound to the gold nanocluster. Overall, these experiments demonstrate that lyotropic chromonic liquid crystal tactoids are powerful systems to image and quantify chirality amplification by key biological chiral molecules that would have played a role in the origin of homochirality.
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Affiliation(s)
- Sasan Shadpour
- Chemical
Physics Interdisciplinary Program, Advanced Materials and
Liquid Crystal Institute and Department of Chemistry and Biochemistry, Kent State University, Kent, Ohio 44242-0001, United States
| | - Julie P. Vanegas
- Chemical
Physics Interdisciplinary Program, Advanced Materials and
Liquid Crystal Institute and Department of Chemistry and Biochemistry, Kent State University, Kent, Ohio 44242-0001, United States
| | - Ahlam Nemati
- Chemical
Physics Interdisciplinary Program, Advanced Materials and
Liquid Crystal Institute and Department of Chemistry and Biochemistry, Kent State University, Kent, Ohio 44242-0001, United States
| | - Torsten Hegmann
- Chemical
Physics Interdisciplinary Program, Advanced Materials and
Liquid Crystal Institute and Department of Chemistry and Biochemistry, Kent State University, Kent, Ohio 44242-0001, United States
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38
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Ehni P, Guy K, Ebert M, Beardsworth S, Bader K, Forschner R, Bühlmeyer A, Dumait N, Roiland C, Molard Y, Laschat S. Luminescent liquid crystalline hybrid materials by embedding octahedral molybdenum cluster anions with soft organic shells derived from tribenzo[18]crown-6. Dalton Trans 2018; 47:14340-14351. [PMID: 30187902 DOI: 10.1039/c8dt03254h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Crown ethers and their derivatives are versatile building blocks for the design of supramolecular materials. They can be functionalized at will and are well known for their abilities to complex with alkali cations. Here, we show that emissive lanthanide free hybrid materials can be generated by using such building blocks. The organic tribenzo[18]crown-6 central core was functionalized via six-fold Suzuki cross-coupling as a key reaction with three o-terphenyl units which could be converted into their corresponding triphenylenes by the Scholl reaction, leading to novel liquid-crystalline columnar materials. Selected tribenzo[18]crown-6 o-terphenyls could interact with emissive ternary metal cluster compound salts to generate hybrid materials combining the properties of both moieties. Due to synergistic effects and despite the anisometry of the cluster compounds, individual properties such as liquid-crystalline phase stability of the organic part and emission abilities of its inorganic counter-part are enhanced in the hybrid compounds.
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Affiliation(s)
- Philipp Ehni
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany.
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Dherbassy Q, Wencel-Delord J, Colobert F. Atroposelective arylation of biaryls by C-H activation. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.08.048] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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40
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Nemati A, Shadpour S, Querciagrossa L, Li L, Mori T, Gao M, Zannoni C, Hegmann T. Chirality amplification by desymmetrization of chiral ligand-capped nanoparticles to nanorods quantified in soft condensed matter. Nat Commun 2018; 9:3908. [PMID: 30254259 PMCID: PMC6156227 DOI: 10.1038/s41467-018-06400-0] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Accepted: 08/29/2018] [Indexed: 11/13/2022] Open
Abstract
Induction, transmission, and manipulation of chirality in molecular systems are well known, widely applied concepts. However, our understanding of how chirality of nanoscale entities can be controlled, measured, and transmitted to the environment is considerably lacking behind. Future discoveries of dynamic assemblies engineered from chiral nanomaterials, with a specific focus on shape and size effects, require exact methods to assess transmission and amplification of nanoscale chirality through space. Here we present a remarkably powerful chirality amplification approach by desymmetrization of plasmonic nanoparticles to nanorods. When bound to gold nanorods, a one order of magnitude lower number of chiral molecules induces a tighter helical distortion in the surrounding liquid crystal-a remarkable amplification of chirality through space. The change in helical distortion is consistent with a quantification of the change in overall chirality of the chiral ligand decorated nanomaterials differing in shape and size as calculated from a suitable pseudoscalar chirality indicator.
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Affiliation(s)
- Ahlam Nemati
- Chemical Physics Interdisciplinary Program, Liquid Crystal Institute, Kent State University, Kent, OH, 44242-0001, USA
| | - Sasan Shadpour
- Chemical Physics Interdisciplinary Program, Liquid Crystal Institute, Kent State University, Kent, OH, 44242-0001, USA
| | - Lara Querciagrossa
- Dipartimento di Chimica Industriale "Toso Montanari" and INSTM, Università di Bologna, Viale Risorgimento 4, IT-40136, Bologna, Italy
| | - Lin Li
- Institute for Smart Liquid Crystals, JITRI, Changshu, 215500, Jiangsu, China
| | - Taizo Mori
- Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | - Min Gao
- Chemical Physics Interdisciplinary Program, Liquid Crystal Institute, Kent State University, Kent, OH, 44242-0001, USA
| | - Claudio Zannoni
- Dipartimento di Chimica Industriale "Toso Montanari" and INSTM, Università di Bologna, Viale Risorgimento 4, IT-40136, Bologna, Italy
| | - Torsten Hegmann
- Chemical Physics Interdisciplinary Program, Liquid Crystal Institute, Kent State University, Kent, OH, 44242-0001, USA.
- Department of Chemistry and Biochemistry, Kent State University, Kent, OH, 44242-0001, USA.
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41
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Jessy P, Radha S, Patel N. Morphological, optical and dielectric behavior of chiral nematic liquid crystal mixture: Study on effect of different amount of chirality. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.01.160] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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42
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Li M, Zhang C, Fang L, Shi L, Tang Z, Lu HY, Chen CF. Chiral Nanoparticles with Full-Color and White CPL Properties Based on Optically Stable Helical Aromatic Imide Enantiomers. ACS APPLIED MATERIALS & INTERFACES 2018; 10:8225-8230. [PMID: 29436220 DOI: 10.1021/acsami.8b00341] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Chiral self-assembled organic nanoparticles with circularly polarized luminescence (CPL) properties can be utilized as a new kind of chiral luminescent materials for practical applications. However, no such chiral organic nanoparticles with full-color and white CPL properties have been reported so far. Herein, five pairs of self-assembled chiral nanoparticles based on optically stable helical aromatic amide enantiomers were conveniently obtained. The chiral nanoparticles showed about 200 nm uniform sphere, high fluorescence quantum yields, and large Stokes shifts. Especially, the chiral nanoparticles exhibited both obvious mirror-image circular dichroism signals and full-color CPL properties with luminescence dissymmetry factors of about 10-3, which were comparable to those of CPL-active quantum dots. Moreover, the chiral organic nanoparticles with white CPL could also be easily achieved using the three-primary-color enantiomers via intermolecular energy resonance transfer.
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Affiliation(s)
- Meng Li
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry , Chinese Academy of Sciences , Beijing 100190 , China
| | - Chao Zhang
- University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Lei Fang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry , Chinese Academy of Sciences , Beijing 100190 , China
- University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Lin Shi
- National Center for Nanoscience and Technology , Beijing 100190 , China
| | - Zhiyong Tang
- National Center for Nanoscience and Technology , Beijing 100190 , China
| | - Hai-Yan Lu
- University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Chuan-Feng Chen
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry , Chinese Academy of Sciences , Beijing 100190 , China
- University of Chinese Academy of Sciences , Beijing 100049 , China
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43
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Detection of AFB1 via TiO2 Nanotubes/Au Nanoparticles/Enzyme Photoelectrochemical Biosensor. COATINGS 2018. [DOI: 10.3390/coatings8030090] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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44
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Chen MY, Xu Z, Chen L, Song T, Zheng ZJ, Cao J, Cui YM, Xu LW. Catalytic Asymmetric Huisgen Alkyne-Azide Cycloaddition of Bisalkynes by Copper(I) Nanoparticles. ChemCatChem 2017. [DOI: 10.1002/cctc.201701336] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Mu-Yi Chen
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education; Hangzhou Normal University; No.1378 Wenyi West Road Hangzhou 311121 P.R. China
| | - Zheng Xu
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education; Hangzhou Normal University; No.1378 Wenyi West Road Hangzhou 311121 P.R. China
| | - Li Chen
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education; Hangzhou Normal University; No.1378 Wenyi West Road Hangzhou 311121 P.R. China
| | - Tao Song
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education; Hangzhou Normal University; No.1378 Wenyi West Road Hangzhou 311121 P.R. China
| | - Zhan-Jiang Zheng
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education; Hangzhou Normal University; No.1378 Wenyi West Road Hangzhou 311121 P.R. China
| | - Jian Cao
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education; Hangzhou Normal University; No.1378 Wenyi West Road Hangzhou 311121 P.R. China
| | - Yu-Ming Cui
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education; Hangzhou Normal University; No.1378 Wenyi West Road Hangzhou 311121 P.R. China
| | - Li-Wen Xu
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education; Hangzhou Normal University; No.1378 Wenyi West Road Hangzhou 311121 P.R. China
- Suzhou Research Insititue and State Key Laboratory for Oxo, Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics; Chinese Academy of Sciences; Lanzhou 730000 P.R. China
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45
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Yoshida J, Tamura S, Watanabe G, Kasahara Y, Yuge H. "Colored" inorganic dopants for inducing liquid crystal chiral nematic and blue phases: monitoring of dopant-host interaction by Raman spectroscopy. Chem Commun (Camb) 2017; 53:5103-5106. [PMID: 28425512 DOI: 10.1039/c7cc01920c] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
A new ruthenium complex that effectively induces chiral nematic and blue phases upon doping with a nematic liquid crystal was developed. The red-colored dopant exhibits strong Raman scattering in solution and nematics even at low concentrations. Further measurements at various concentrations strongly suggested homogeneous dispersion of the dopant in chiral nematics.
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Affiliation(s)
- Jun Yoshida
- Kitasato University, Department of Chemistry, School of Science, Kitasato 1-15-1, Sagamihara, Japan.
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46
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Rosu C, Jacobeen S, Park K, Reichmanis E, Yunker P, Russo PS. Domed Silica Microcylinders Coated with Oleophilic Polypeptides and Their Behavior in Lyotropic Cholesteric Liquid Crystals of the Same Polypeptide. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:13137-13148. [PMID: 27951711 DOI: 10.1021/acs.langmuir.6b03165] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Liquid crystals can organize dispersed particles into useful and exotic structures. In the case of lyotropic cholesteric polypeptide liquid crystals, polypeptide-coated particles are appealing because the surface chemistry matches that of the polymeric mesogen, which permits a tighter focus on factors such as extended particle shape. The colloidal particles developed here consist of a magnetic and fluorescent cylindrically symmetric silica core with one rounded, almost hemispherical end. Functionalized with helical poly(γ-stearyl-l-glutamate) (PSLG), the particles were dispersed at different concentrations in cholesteric liquid crystals (ChLC) of the same polymer in tetrahydrofuran (THF). Defects introduced by the particles to the director field of the bulk PSLG/THF host led to a variety of phases. In fresh mixtures, the cholesteric mesophase of the PSLG matrix was distorted, as reflected in the absence of the characteristic fingerprint pattern. Over time, the fingerprint pattern returned, more quickly when the concentration of the PSLG-coated particles was low. At low particle concentration the particles were "guided" by the PSLG liquid crystal to organize into patterns similar to that of the re-formed bulk chiral nematic phase. When their concentration increased, the well-dispersed PSLG-coated particles seemed to map onto the distortions in the bulk host's local director field. The particles located near the glass vial-ChLC interfaces were stacked lengthwise into architectures with apparent two-dimensional hexagonal symmetry. The size of these "crystalline" structures increased with particle concentration. They displayed remarkable stability toward an external magnetic field; hydrophobic interactions between the PSLG polymers in the shell and those in the bulk LC matrix may be responsible. The results show that bio-inspired LCs can assemble suitable colloidal particles into soft crystalline structures.
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Affiliation(s)
| | | | - Katherine Park
- Molecular Vista, Inc., 6840 Via Del Oro, Suite 110, San Jose, California 95119, United States
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47
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Mori T, Ishikawa D, Yonamine Y, Fujii Y, Hill JP, Ichinose I, Ariga K, Nakanishi W. Mechanically Induced Opening-Closing Action of Binaphthyl Molecular Pliers: Digital Phase Transition versus Continuous Conformational Change. Chemphyschem 2016; 18:1470-1474. [PMID: 27781370 DOI: 10.1002/cphc.201601144] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Indexed: 12/17/2022]
Abstract
Reversible dynamic control of structure is a significant challenge in molecular nanotechnology. Previously, we have reported a mechanically induced continuous (analog) conformational variation in an amphiphilic binaphthyl, where closing of molecular pliers was achieved by compression of a molecular monolayer composed of these molecules at the air-water interface. In this work we report that a phase transition induced by an applied mechanical stress enables discontinuous digital (1/0) opening of simple binaphthyl molecular pliers. A lipid matrix at the air-water interface promotes the formation of quasi-stable nanocrystals, in which binaphthyl molecules have an open transoid configuration. The crystallization/dissolution of quasi-stable binaphthyl crystals with accompanying conformational change is reversible and repeatable.
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Affiliation(s)
- Taizo Mori
- World Premier International (WPI) Research Centre for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | - Daisuke Ishikawa
- World Premier International (WPI) Research Centre for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | - Yusuke Yonamine
- World Premier International (WPI) Research Centre for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | - Yoshihisa Fujii
- Polymer Materials Unit, National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | - Jonathan P Hill
- World Premier International (WPI) Research Centre for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | - Izumi Ichinose
- Polymer Materials Unit, National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | - Katsuhiko Ariga
- World Premier International (WPI) Research Centre for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | - Waka Nakanishi
- World Premier International (WPI) Research Centre for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
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48
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Zhang J, Li J, Yuan H, Zhang G, Li B, Li W, Wei X, Duan XE, Wu L. Optically Active Liquid Crystalline Polyoxometalates via Electrostatic Encapsulation with Cholesterol-Containing Amphiphile. Chem Asian J 2016; 11:2001-5. [DOI: 10.1002/asia.201600532] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2016] [Revised: 05/10/2016] [Indexed: 11/06/2022]
Affiliation(s)
- Jing Zhang
- Institute of Applied Chemistry; Shanxi University; Taiyuan 030006 China
- State Key Laboratory of Supramolecular Structure and Materials; Jilin University; Changchun 130012 China
| | - Jingfang Li
- State Key Laboratory of Supramolecular Structure and Materials; Jilin University; Changchun 130012 China
| | - Hong Yuan
- College of Chemistry and Chemical Engineering; Shanxi University; Taiyuan 030006 China
| | - Guohua Zhang
- State Key Laboratory of Supramolecular Structure and Materials; Jilin University; Changchun 130012 China
| | - Bao Li
- State Key Laboratory of Supramolecular Structure and Materials; Jilin University; Changchun 130012 China
| | - Wen Li
- State Key Laboratory of Supramolecular Structure and Materials; Jilin University; Changchun 130012 China
| | - Xuehong Wei
- College of Chemistry and Chemical Engineering; Shanxi University; Taiyuan 030006 China
| | - Xin-E Duan
- College of Chemistry and Chemical Engineering; Shanxi University; Taiyuan 030006 China
| | - Lixin Wu
- State Key Laboratory of Supramolecular Structure and Materials; Jilin University; Changchun 130012 China
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49
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Wang R, Zheng Y, Li X, Chen J, Cui J, Zhang J, Wan X. Optically active helical vinylbiphenyl polymers with reversible thermally induced stereomutation. Polym Chem 2016. [DOI: 10.1039/c6py00447d] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
A series of novel chiral vinylbiphenyl monomers, (+)-2-[(S)-alkoxycarbonyl]-5-(4′-hexyloxyphenyl)styrene (S-(+)-I-Mm, m = 0, 1, 2, 3)/(−)-2-[(R)-sec-butyloxycarbonyl]-5-(4′-hexyloxyphenyl)styrene (R-(−)-I-M0), were designed and synthesized to search for new building blocks of optically active helical polymers.
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Affiliation(s)
- Rong Wang
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing 100871
| | - Yijun Zheng
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing 100871
| | - Xiaofu Li
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing 100871
| | - Junxian Chen
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing 100871
| | - Jiaxi Cui
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing 100871
| | - Jie Zhang
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing 100871
| | - Xinhua Wan
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing 100871
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50
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Vulugundam G, Misra SK, Ostadhossein F, Schwartz-Duval AS, Daza EA, Pan D. (−)/(+)-Sparteine induced chirally-active carbon nanoparticles for enantioselective separation of racemic mixtures. Chem Commun (Camb) 2016; 52:7513-6. [DOI: 10.1039/c6cc02525k] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Chiral carbon nanoparticles (CCNPs) were developed by surface passivation using the chiral ligand (−)-sparteine or (+)-sparteine (denoted (−)-SP/CNP and (+)-SP/CNP, respectively).
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Affiliation(s)
- Gururaja Vulugundam
- Department of Bioengineering
- Beckman Institute
- Materials Science and Engineering
- University of Illinois at Urbana-Champaign
- Urbana
| | - Santosh K. Misra
- Department of Bioengineering
- Beckman Institute
- Materials Science and Engineering
- University of Illinois at Urbana-Champaign
- Urbana
| | - Fatemeh Ostadhossein
- Department of Bioengineering
- Beckman Institute
- Materials Science and Engineering
- University of Illinois at Urbana-Champaign
- Urbana
| | - Aaron S. Schwartz-Duval
- Department of Bioengineering
- Beckman Institute
- Materials Science and Engineering
- University of Illinois at Urbana-Champaign
- Urbana
| | - Enrique A. Daza
- Department of Bioengineering
- Beckman Institute
- Materials Science and Engineering
- University of Illinois at Urbana-Champaign
- Urbana
| | - Dipanjan Pan
- Department of Bioengineering
- Beckman Institute
- Materials Science and Engineering
- University of Illinois at Urbana-Champaign
- Urbana
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