1
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Martin K, Aharon T, Mastropasqua Talamo M, Hauser A, Bürgi T, Vanthuyne N, Caricato M, Avarvari N. Helicene Appended Benzothiadiazoles as Chiral Emitters. Chemistry 2024; 30:e202401413. [PMID: 38770893 DOI: 10.1002/chem.202401413] [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: 04/11/2024] [Revised: 05/20/2024] [Accepted: 05/21/2024] [Indexed: 05/22/2024]
Abstract
A homologous series of 4,7-bis(aryl) substituted benzothiadiazole (BTD) compounds, containing the helicenic derivatives bis([4]helicene), bis([5]helicene) and bis([6]helicene), have been prepared upon a double Suzuki coupling between 3,6-bis(pinacolyl-borane)-BTD and the corresponding bromo-aryl precursors. The single crystal X-ray structure of the bis([4]helicene) compound shows the existence of both helicities (M) and (P) on the same molecule. All the compounds of the series are highly emissive in solution, with quantum yields of the emission ranging from 50 to 91 %. The enantiopure compounds (M,M) and (P,P) for the BTD-bis([6]helicene) have been prepared from the corresponding enantiopure 2-bromo-[6]helicene precursors. Their chiroptical properties have been investigated in correlation with density functional theory (DFT) calculations, which allowed to confidently assign the absolute configuration of the helicene arms and to characterize the different electronic transitions, including the low energy charge transfer excitation from helicenes to BTD. The enantiomerically pure fluorophores (M,M)- and (P,P)-BTD-bis([6]helicene), which exist in solution as two main conformers, according to the DFT calculations, show CPL activity in solution, with glum factors of ≈1.7×10-3 at λem=525 nm, and also in the solid state, with glum factors of ≈1.2×10-3 in spite of the strong decrease of the quantum efficiency.
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Affiliation(s)
- Kévin Martin
- Univ Angers, CNRS, MOLTECH-Anjou SFR MATRIX, F-49000, Angers, France
| | - Tal Aharon
- Department of Chemistry, University of Kansas, 1567 Irving Hill Road, Lawrence, Kansas, 66045, United States of America
- TetraScience, 294 Washington St, Boston, MA 02108, United States of America
| | | | - Andreas Hauser
- Department of Physical Chemistry, University of Geneva, 30 Quai Ernest Ansermet, CH-1211, Geneva, Switzerland
| | - Thomas Bürgi
- Department of Physical Chemistry, University of Geneva, 30 Quai Ernest Ansermet, CH-1211, Geneva, Switzerland
| | - Nicolas Vanthuyne
- Aix Marseille Univ, CNRS, Centrale Marseille UAR, 1739, FSCM, Chiropole, Marseille, France
| | - Marco Caricato
- Department of Chemistry, University of Kansas, 1567 Irving Hill Road, Lawrence, Kansas, 66045, United States of America
| | - Narcis Avarvari
- Univ Angers, CNRS, MOLTECH-Anjou SFR MATRIX, F-49000, Angers, France
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2
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Joseph JP, Malone T, Abraham SR, Dutta A, Gupta S, Kuzmin A, Baev A, Swihart MT, Hendrickson JR, Prasad PN. Plasticizer-Induced Enhancement of Mesoscale Dissymmetry in Thin Films of Chiral Polymers with Variable Chain Length. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2305684. [PMID: 37725635 DOI: 10.1002/adma.202305684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 08/13/2023] [Indexed: 09/21/2023]
Abstract
Conjugated polymers with chiral side chains are of interest in areas including chiral photonics, optoelectronics, and chemical and biological sensing. However, the low dissymmetry factors of most neat polymer thin films have limited their practical application. Here, a robust method to increase the absorption dissymmetry factor in a poly-fluorene-thiophene (PF8TS series) system is demonstrated by varying molecular weight and introducing an achiral plasticizer, polyethylene mono alcohol (PEM-OH). Extending chain length within the optimal range and adding this long-chain alcohol significantly enhance the chiroptical properties of spin-coated and annealed thin films. Mueller matrix spectroscopic ellipsometry (MMSE) analysis shows good agreement with the steady-state transmission measurements confirming a strong chiral response (circular dichroism (CD) and circular birefringence (CB)), ruling out linear dichroism, birefringence, and specific reflection effects. Solid-state NMR studies of annealed hybrid chiral polymer systems show enhancement of signals associated with aromatic π-stacked backbone and the ordered side-chain conformations. Further studies using Raman spectroscopy, X-ray diffraction (XRD), differential scanning calorimetry (DSC), atomic force microscopy (AFM), and polarized optical microscopy (POM) indicate that PEM-OH facilitates mesoscopic crystal domain ordering upon annealing. This provides new insights into routes for tuning optical activity in conjugated polymers.
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Affiliation(s)
- Jojo P Joseph
- Department of Chemistry and The Institute for Lasers, Photonics, and Biophotonics, University at Buffalo, SUNY, Buffalo, NY, 14260, USA
| | - Trent Malone
- Department of Electro-Optics and Photonics, University of Dayton, Dayton, OH, 45469, USA
- Air Force Research Laboratory, Sensors Directorate, Wright-Patterson AFB, Dayton, OH, 45433, USA
| | - Shema R Abraham
- Department of Chemical and Biological Engineering, University at Buffalo, SUNY, Buffalo, NY, 14260, USA
| | - Avisek Dutta
- Department of Chemistry and The Institute for Lasers, Photonics, and Biophotonics, University at Buffalo, SUNY, Buffalo, NY, 14260, USA
| | - Sonal Gupta
- Department of Chemistry and The Institute for Lasers, Photonics, and Biophotonics, University at Buffalo, SUNY, Buffalo, NY, 14260, USA
| | - Andrey Kuzmin
- Department of Chemistry and The Institute for Lasers, Photonics, and Biophotonics, University at Buffalo, SUNY, Buffalo, NY, 14260, USA
| | - Alexander Baev
- Department of Chemistry and The Institute for Lasers, Photonics, and Biophotonics, University at Buffalo, SUNY, Buffalo, NY, 14260, USA
| | - Mark T Swihart
- Department of Chemical and Biological Engineering, University at Buffalo, SUNY, Buffalo, NY, 14260, USA
| | - Joshua R Hendrickson
- Air Force Research Laboratory, Sensors Directorate, Wright-Patterson AFB, Dayton, OH, 45433, USA
| | - Paras N Prasad
- Department of Chemistry and The Institute for Lasers, Photonics, and Biophotonics, University at Buffalo, SUNY, Buffalo, NY, 14260, USA
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3
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Minion L, Wade J, Moreno‐Naranjo JM, Ryan S, Siligardi G, Fuchter MJ. Insights into the origins of inverted circular dichroism in thin films of a chiral side chain polyfluorene. Chirality 2023; 35:817-825. [PMID: 37349263 PMCID: PMC10946986 DOI: 10.1002/chir.23601] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 05/16/2023] [Accepted: 06/05/2023] [Indexed: 06/24/2023]
Abstract
We synthesized a fluorene-bithiophene co-polymer with chiral side chains (cPFT2) and investigated its chiroptical properties via synchotronradiation circular dichroism. We observed that thin films of the polymer display an intense circular dichroism (CD) upon annealing, which is of opposite handedness to the CD reported for similar polyfluorenes bearing the same enantiomeric chiral side chain. We then contrast the properties of this polymer with chiral side chain fluorene homopolymer (cPF) and observe large differences in their thin film morphology. Using photoluminescence spectroscopy, we uncover evidence of polymer chain bending in cPFT2, which is further supported by theoretical calculations, and propose an explanation for the observed inverted optical activity.
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Affiliation(s)
- Louis Minion
- Department of MaterialsImperial College LondonLondonUK
- Centre for Processable ElectronicsImperial College London, South Kensington CampusLondonUK
- B23 Beamline, Diamond Light Source Ltd, Harwell Science and Innovation CampusDidcotUK
| | - Jessica Wade
- Department of MaterialsImperial College LondonLondonUK
- Centre for Processable ElectronicsImperial College London, South Kensington CampusLondonUK
| | - Juan Manuel Moreno‐Naranjo
- Centre for Processable ElectronicsImperial College London, South Kensington CampusLondonUK
- Department of Chemistry and Molecular Sciences Research HubImperial College London, White City CampusLondonUK
| | - Seán Ryan
- Department of Chemistry and Molecular Sciences Research HubImperial College London, White City CampusLondonUK
| | - Giuliano Siligardi
- B23 Beamline, Diamond Light Source Ltd, Harwell Science and Innovation CampusDidcotUK
| | - Matthew J. Fuchter
- Centre for Processable ElectronicsImperial College London, South Kensington CampusLondonUK
- Department of Chemistry and Molecular Sciences Research HubImperial College London, White City CampusLondonUK
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4
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Hao C, Xu C, Kuang H. Chiral probes for biosensing. Chem Commun (Camb) 2023; 59:12959-12971. [PMID: 37823263 DOI: 10.1039/d3cc03660j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/13/2023]
Abstract
Chiral inorganic nanomaterials have emerged as a highly promising area of research in nanoscience due to their exceptional light-matter interaction and vast potential applications in chiral sensing, asymmetric catalysis, enantiomer separation, and negative-index materials. We present an overview of the latest advances in chiral inorganic nanomaterials including chiral individual nanoparticles, chiral assemblies, and chiral film-based sensors over the past ten years. Additionally, we discuss the challenges and future perspectives for developing chiral nanomaterials in biosensing applications.
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Affiliation(s)
- Changlong Hao
- International Joint Research Laboratory for Biointerface and Biodetection, State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, People's Republic of China.
| | - Chuanlai Xu
- International Joint Research Laboratory for Biointerface and Biodetection, State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, People's Republic of China.
| | - Hua Kuang
- International Joint Research Laboratory for Biointerface and Biodetection, State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, People's Republic of China.
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5
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Joseph JP, Miglani C, Maulik A, Abraham SR, Dutta A, Baev A, Prasad PN, Pal A. Stereoselective Plasmonic Interaction in Peptide-tethered Photopolymerizable Diacetylenes Doped with Chiral Gold Nanoparticles. Angew Chem Int Ed Engl 2023; 62:e202306751. [PMID: 37483166 DOI: 10.1002/anie.202306751] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2023] [Revised: 07/16/2023] [Accepted: 07/21/2023] [Indexed: 07/25/2023]
Abstract
Designing polymeric systems with ultra-high optical activity is instrumental in the pursuit of smart artificial chiroptical materials, including the fundamental understanding of structure/property relations. Herein, we report a diacetylene (DA) moiety flanked by chiral D- and L-FF dipeptide methyl esters that exhibits efficient topochemical photopolymerization in the solid phase to furnish polydiacetylene (PDA) with desired control over the chiroptical properties. The doping of the achiral gold nanoparticles provides plasmonic interaction with the PDAs to render asymmetric shape to the circular dichroism bands. With the judicious design of the chiral amino acid ligand appended to the AuNPs, we demonstrate the first example of selective chiral amplification mediated by stereo-structural matching of the polymer-plasmonic AuNP hybrid pairs. Such ordered self-assembly aided by topochemical polymerization in peptide-tethered PDA provides a smart strategy to produce soft responsive materials for applications in chiral photonics.
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Affiliation(s)
- Jojo P Joseph
- Department of Chemistry and The Institute for Lasers, Photonics and Biophotonics, University at Buffalo (SUNY), 14260, Buffalo, NY, USA
| | - Chirag Miglani
- Chemical Biology Unit, Institute of Nano Science and Technology, Sector 81, 140306, Mohali, Punjab, India
| | - Antarlina Maulik
- Chemical Biology Unit, Institute of Nano Science and Technology, Sector 81, 140306, Mohali, Punjab, India
| | - Shema R Abraham
- Department of Chemical and Biological Engineering, University at Buffalo (SUNY), 14260, Buffalo, NY, USA
| | - Avisek Dutta
- Department of Chemistry and The Institute for Lasers, Photonics and Biophotonics, University at Buffalo (SUNY), 14260, Buffalo, NY, USA
| | - Alexander Baev
- Department of Chemistry and The Institute for Lasers, Photonics and Biophotonics, University at Buffalo (SUNY), 14260, Buffalo, NY, USA
| | - Paras N Prasad
- Department of Chemistry and The Institute for Lasers, Photonics and Biophotonics, University at Buffalo (SUNY), 14260, Buffalo, NY, USA
| | - Asish Pal
- Chemical Biology Unit, Institute of Nano Science and Technology, Sector 81, 140306, Mohali, Punjab, India
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6
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Martens K, Funck T, Santiago EY, Govorov AO, Burger S, Liedl T. Onset of Chirality in Plasmonic Meta-Molecules and Dielectric Coupling. ACS NANO 2022; 16:16143-16149. [PMID: 36241172 PMCID: PMC9620978 DOI: 10.1021/acsnano.2c04729] [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: 05/14/2022] [Accepted: 09/22/2022] [Indexed: 06/16/2023]
Abstract
Chirality is a fundamental feature in all domains of nature, ranging from particle physics over electromagnetism to chemistry and biology. Chiral objects lack a mirror plane and inversion symmetry and therefore cannot be spatially aligned with their mirrored counterpart, their enantiomer. Both natural molecules and artificial chiral nanostructures can be characterized by their light-matter interaction, which is reflected in circular dichroism (CD). Using DNA origami, we assemble model meta-molecules from multiple plasmonic nanoparticles, representing meta-atoms accurately positioned in space. This allows us to reconstruct piece by piece the impact of varying macromolecular geometries on their surrounding optical near fields. Next to the emergence of CD signatures in the instance that we architect a third dimension, we design and implement sign-flipping signals through addition or removal of single particles in the artificial molecules. Our data and theoretical modeling reveal the hitherto unrecognized phenomenon of chiral plasmonic-dielectric coupling, explaining the intricate electromagnetic interactions within hybrid DNA-based plasmonic nanostructures.
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Affiliation(s)
- Kevin Martens
- Faculty
of Physics and Center for NanoScience (CeNS), Ludwig-Maximilians-University, Geschwister-Scholl-Platz 1, 80539 Munich, Germany
| | - Timon Funck
- Faculty
of Physics and Center for NanoScience (CeNS), Ludwig-Maximilians-University, Geschwister-Scholl-Platz 1, 80539 Munich, Germany
| | - Eva Y. Santiago
- Department
of Physics and Astronomy, Nanoscale and Quantum Phenomena Institute, Ohio University, Athens, Ohio 45701, United States
| | - Alexander O. Govorov
- Department
of Physics and Astronomy, Nanoscale and Quantum Phenomena Institute, Ohio University, Athens, Ohio 45701, United States
| | - Sven Burger
- Zuse
Institute Berlin, Takustraße 7, D-14195 Berlin, Germany
- JCMwave
GmbH, Bolivarallee 22, 14050 Berlin, Germany
| | - Tim Liedl
- Faculty
of Physics and Center for NanoScience (CeNS), Ludwig-Maximilians-University, Geschwister-Scholl-Platz 1, 80539 Munich, Germany
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7
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Joseph JP, Abraham SR, Dutta A, Baev A, Swihart MT, Prasad PN. Modulating the Chiroptical Response of Chiral Polymers with Extended Conjugation within the Structural Building Blocks. J Phys Chem Lett 2022; 13:9085-9095. [PMID: 36154023 DOI: 10.1021/acs.jpclett.2c02498] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Advancing the emerging area of chiral photonics requires modeling-guided concepts of chiral material design to enhance optical activity and associated optical rotatory dispersion. Herein, we introduce conformational engineering achieved by tuning polymer backbone conjugation through introduction of thiophene structural units in a chiral fluorene polymer backbone. Our theoretical calculations reveal a relationship between the structural conformation and the resultant rotational strength. We further synthesize a series of chiral fluorene-based polymers copolymerized with thiophene whose optical chirality trend is in qualitative agreement with predictions of our quantum chemical calculations. Varying the number of thiophene units in the monomer building block allows us to modulate the rotational strength by tuning the intrafibril helicity of single-stranded polymer chains, whereby the monomer conjugation is retained throughout the whole length of the polymer backbone. Our design concept delineates an underexamined approach: the concept of tuning backbone conjugation and helicity within the main chain to enhance the optical activity of chiral polymer systems.
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Affiliation(s)
- Jojo P Joseph
- Department of Chemistry and The Institute for Lasers, Photonics and Biophotonics, University at Buffalo (SUNY), Buffalo, New York 14260, United States
| | - Shema R Abraham
- Department of Chemical and Biological Engineering, University at Buffalo (SUNY), Buffalo, New York 14260, United States
| | - Avisek Dutta
- Department of Chemistry and The Institute for Lasers, Photonics and Biophotonics, University at Buffalo (SUNY), Buffalo, New York 14260, United States
| | - Alexander Baev
- Department of Chemistry and The Institute for Lasers, Photonics and Biophotonics, University at Buffalo (SUNY), Buffalo, New York 14260, United States
| | - Mark T Swihart
- Department of Chemical and Biological Engineering, University at Buffalo (SUNY), Buffalo, New York 14260, United States
| | - Paras N Prasad
- Department of Chemistry and The Institute for Lasers, Photonics and Biophotonics, University at Buffalo (SUNY), Buffalo, New York 14260, United States
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8
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Fan H, Tong Z, Ren Z, Mishra K, Morita S, Edouarzin E, Gorla L, Averkiev B, Day VW, Hua DH. Synthesis and Characterization of Bimetallic Nanoclusters Stabilized by Chiral and Achiral Polyvinylpyrrolidinones. Catalytic C(sp 3)-H Oxidation. J Org Chem 2022; 87:6742-6759. [PMID: 35511477 DOI: 10.1021/acs.joc.2c00449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Second-generation chiral-substituted poly-N-vinylpyrrolidinones (CSPVPs) (-)-1R and (+)-1S were synthesized by free-radical polymerization of (3aR,6aR)- and (3aS,6aS)-5-ethenyl-tetrahydro-2,2-dimethyl-4H-1,3-dioxolo[4,5-c]pyrrol-4-one, respectively, using thermal and photochemical reactions. They were produced from respective d-isoascorbic acid and d-ribose. In addition, chiral polymer (-)-2 was also synthesized from the polymerization of (S)-3-(methoxymethoxy)-1-vinylpyrrolidin-2-one. Molecular weights of these chiral polymers were measured using HRMS, and the polymer chain tacticity was studied using 13C NMR spectroscopy. Chiral polymers (-)-1R, (+)-1S, and (-)-2 along with poly-N-vinylpyrrolidinone (PVP, MW 40K) were separately used in the stabilization of Cu/Au or Pd/Au nanoclusters. CD spectra of the bimetallic nanoclusters stabilized by (-)-1R and (+)-1S showed close to mirror-imaged CD absorption bands at wavelengths 200-300 nm, revealing that bimetallic nanoclusters' chiroptical responses are derived from chiral polymer-encapsulated nanomaterials. Chemo-, regio-, and stereo-selectivity was found in the catalytic C-H group oxidation reactions of complex bioactive natural products, such as ambroxide, menthofuran, boldine, estrone, dehydroabietylamine, 9-allogibberic acid, and sclareolide, and substituted adamantane molecules, when catalyst Cu/Au (3:1) or Pd/Au (3:1) stabilized by CSPVPs or PVP and oxidant H2O2 or t-BuOOH were applied. Oxidation of (+)-boldine N-oxide 23 using NMO as an oxidant yielded 4,5-dehydroboldine 27, and oxidation of (-)-9-allogibberic acid yielded C6,15 lactone 47 and C6-ketone 48.
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Affiliation(s)
- Huafang Fan
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, United States
| | - Zongbo Tong
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, United States
| | - Zhaoyang Ren
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, United States
| | - Kanchan Mishra
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, United States
| | - Shunya Morita
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, United States
| | - Edruce Edouarzin
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, United States
| | - Lingaraju Gorla
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, United States
| | - Boris Averkiev
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, United States
| | - Victor W Day
- Department of Chemistry, University of Kansas, Lawrence, Kansas 66045, United States
| | - Duy H Hua
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, United States
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9
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Du M, Liu X, Xie S. Spin-orbit coupling and the fine optical structure of chiral helical polymers. Phys Chem Chem Phys 2022; 24:9557-9563. [PMID: 35394001 DOI: 10.1039/d2cp01092e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
With the discovery of the chiral-induced spin selectivity (CISS) effect, it has been recognized that spin and structural spin-orbit coupling (SOC) play important roles in the electro-optical properties of chiral materials. We redefine the spin-dependent current and magnetic moment operators to include chiral-induced SOC in a helical polymer and deduce optical absorption and circular dichroism (CD) formulae. The fine structure in the optical spectra is calculated for a helical polymer described with the tight-binding model. The effects of both the electron orbit and spin on the optical absorption and CD are discussed. Our investigations demonstrate that the synergy between the electron orbit and spin will contribute to higher-sensitivity circularly polarized light (CPL) detection.
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Affiliation(s)
- Mengzhao Du
- School of Physics, State Key Laboratory of Crystal Materials, Shandong University, Ji'nan 250100, China.
| | - Xuan Liu
- School of Physics, State Key Laboratory of Crystal Materials, Shandong University, Ji'nan 250100, China.
| | - Shijie Xie
- School of Physics, State Key Laboratory of Crystal Materials, Shandong University, Ji'nan 250100, China.
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10
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Feng F, Zhang S, Yang L, Li G, Xu W, Qu H, Zhang J, Dhinakaran MK, Xu C, Cheng J, Li H. Highly Chiral Selective Resolution in Pillar[6]arenes Functionalized Microchannel Membranes. Anal Chem 2022; 94:6065-6070. [PMID: 35384661 DOI: 10.1021/acs.analchem.2c01054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
High flux microchannel membranes have the potential for large scale separations. However, it is prevented by poor enantioselectivity. Therefore, the development of a high-enantioselective microchannel membrane is of great importance for large scale chiral separations. In this work, chiral gold nanoparticles are incorporated into the microchannel membrane to astringe the large pores and improve the enantioselectivity. Here, the gold nanoparticles are functionalized by l-phenylalanine-derived pil-lararenes (l-Phe-P6@AuNPs) as the chiral receptor of R-phenylglycinol (R-PGC) over its enantiomer. This chiral Au NPs coated microchannel membrane (l-Phe-P6@AuNPs microchannel) shows a selectivity of 5.40 for R-PGC and a flux of 140.35 nmol·cm-2·h-1, where the enantioselectivity is improved, ensuring its flux. Compared with the enantioselectivity and flux of nanochannel membranes reported in literatures, the l-Phe-P6@AuNPs microchannel has the advantage for enantioselectivity and flux for chiral separation.
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Affiliation(s)
- Fudan Feng
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China.,Key Laboratory of Pesticide and Chemical Biology (CCNU), Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Siyun Zhang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China.,Key Laboratory of Pesticide and Chemical Biology (CCNU), Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Lei Yang
- Key Laboratory of Pesticide and Chemical Biology (CCNU), Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Guang Li
- Key Laboratory of Pesticide and Chemical Biology (CCNU), Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Weiwei Xu
- Key Laboratory of Pesticide and Chemical Biology (CCNU), Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Haonan Qu
- Key Laboratory of Pesticide and Chemical Biology (CCNU), Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Jin Zhang
- College of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming 650092, China
| | | | - Chuanlai Xu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Jing Cheng
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China.,Key Laboratory of Pesticide and Chemical Biology (CCNU), Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Haibing Li
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China.,Key Laboratory of Pesticide and Chemical Biology (CCNU), Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
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11
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Ma J, Huang L, Zhou B, Yao L. Construction and Catalysis Advances of Inorganic Chiral Nanostructures. ACTA CHIMICA SINICA 2022. [DOI: 10.6023/a22070308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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12
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Zhang W, Ai B, Gu P, Guan Y, Wang Z, Xiao Z, Zhang G. Plasmonic Chiral Metamaterials with Sub-10 nm Nanogaps. ACS NANO 2021; 15:17657-17667. [PMID: 34734713 DOI: 10.1021/acsnano.1c05437] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Sub-10 nm nanogaps are enantioselectively fabricated between two nanocrescents based on nanoskiving and show tailored circular dichroism (CD) activity. The mirror symmetry of the nanostructure is broken by subsequent deposition with different azimuthal angles. Strong plasmonic coupling is excited in the gaps and at the tips, leading to the CD activity. The dissymmetry g-factor of the chiral nanogaps with 5 nm gap-width is -0.055, which is 2.5 times stronger than that of the 10 nm gap-width. Moreover, the surface-enhanced Raman scattering (SERS) performance of l/d-cysteine absorbed on chiral nanogaps manifests as the emergence of enantiospecific Raman peaks and the appearance of distinct changes in SERS intensities, which affirms that chiral nanogaps can recognize specific cysteine enantiomers via standard Raman spectroscopy in the absence of circularly polarized light source and a chiral label molecule. The sub-10 nm chiral nanogaps with tailored chiroptical responses show great potential in a class of chiral applications, such as chiral sensing, polarization converters, label-free chiral recognition, and asymmetric catalysis.
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Affiliation(s)
- Wei Zhang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, P.R. China
| | - Bin Ai
- School of Microelectronics and Communication Engineering, Chongqing Key Laboratory of Bio-perception & Intelligent Information Processing, Chongqing University, Chongqing 400044, P.R. China
| | - Panpan Gu
- School of chemical engineering and machinery, Eastern Liaoning University, Dandong 118003, P.R. China
| | - Yuduo Guan
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, P.R. China
| | - Zengyao Wang
- School of Pharmacy, Weifang Medical University, Weifang 261053, P.R. China
| | - Zifan Xiao
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, P.R. China
| | - Gang Zhang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, P.R. China
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13
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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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14
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Glislere AP, Turchetti D, Nowacki B, Zanlorenzi C, Akcelrud L. Blending as a Strategy to Attain Chiro-Optically Activity Polymers. Macromol Rapid Commun 2021; 42:e2100075. [PMID: 33939864 DOI: 10.1002/marc.202100075] [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: 02/05/2021] [Revised: 03/30/2021] [Indexed: 11/11/2022]
Abstract
Two copolymers, one containing a chiral center and another without any asymmetric site are studied regarding their chiro-optical properties. The pure polymers do not show any signal of chiro-optical activity, only a smooth line is observed in the circular dichroism spectra, even for the chiral material. However, blends containing the achiral one as a major component show striking chiro-optical activity, originating by stable supramolecular structures whose size and shape remain unchanged, regardless of the blend composition. Only the number of such structures (composed by the chiral one), vary with blend composition. The results suggest that working with supramolecular morphology can be an important strategy to attain chiro-optical active polymers.
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Affiliation(s)
- Ana Paula Glislere
- Chemistry Department, Paulo Scarpa Polymer Laboratory (LaPPS), Federal University of Parana, Curitiba, Parana, 81531-990, Brazil
| | - Denis Turchetti
- Chemistry Department, Paulo Scarpa Polymer Laboratory (LaPPS), Federal University of Parana, Curitiba, Parana, 81531-990, Brazil
| | - Bruno Nowacki
- Chemistry Department, Paulo Scarpa Polymer Laboratory (LaPPS), Federal University of Parana, Curitiba, Parana, 81531-990, Brazil
| | - Cristiano Zanlorenzi
- Chemistry Department, Paulo Scarpa Polymer Laboratory (LaPPS), Federal University of Parana, Curitiba, Parana, 81531-990, Brazil
| | - Leni Akcelrud
- Chemistry Department, Paulo Scarpa Polymer Laboratory (LaPPS), Federal University of Parana, Curitiba, Parana, 81531-990, Brazil
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15
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Cao Z, Gao H, Qiu M, Jin W, Deng S, Wong KY, Lei D. Chirality Transfer from Sub-Nanometer Biochemical Molecules to Sub-Micrometer Plasmonic Metastructures: Physiochemical Mechanisms, Biosensing, and Bioimaging Opportunities. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1907151. [PMID: 33252162 DOI: 10.1002/adma.201907151] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 06/21/2020] [Indexed: 05/05/2023]
Abstract
Determining the structural chirality of biomolecules is of vital importance in bioscience and biomedicine. Conventional methods for characterizing molecular chirality, e.g., circular dichroism (CD) spectroscopy, require high-concentration specimens due to the weak electronic CD signals of biomolecules such as amino acids. Artificially designed chiral plasmonic metastructures exhibit strong intrinsic chirality. However, the significant size mismatch between metastructures and biomolecules makes the former unsuitable for chirality-recognition-based molecular discrimination. Fortunately, constructing metallic architectures through molecular self-assembly allows chirality transfer from sub-nanometer biomolecules to sub-micrometer, intrinsically achiral plasmonic metastructures by means of either near-field interaction or chirality inheritance, resulting in hybrid systems with CD signals orders of magnitude larger than that of pristine biomolecules. This exotic property provides a new means to determine molecular chirality at extremely low concentrations (ideally at the single-molecule level). Herein, three strategies of chirality transfer from sub-nanometer biomolecules to sub-micrometer metallic metastructures are analyzed. The physiochemical mechanisms responsible for chirality transfer are elaborated and new fascinating opportunities for employing plasmonic metastructures in chirality-based biosensing and bioimaging are outlined.
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Affiliation(s)
- Zhaolong Cao
- State Key Laboratory of Optoelectronic Materials and Technologies, Guangdong Province Key Laboratory of Display Material and Technology, School of Electronics and Information Technology, Sun Yat-sen University, Guangzhou, 510275, China
| | - Han Gao
- Department of Electrical Engineering, The Hong Kong Polytechnic University, Hong Kong, 999077, China
| | - Meng Qiu
- Department of Electrical Engineering, The Hong Kong Polytechnic University, Hong Kong, 999077, China
| | - Wei Jin
- Department of Electrical Engineering, The Hong Kong Polytechnic University, Hong Kong, 999077, China
| | - Shaozhi Deng
- State Key Laboratory of Optoelectronic Materials and Technologies, Guangdong Province Key Laboratory of Display Material and Technology, School of Electronics and Information Technology, Sun Yat-sen University, Guangzhou, 510275, China
| | - Kwok-Yin Wong
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hong Kong, 999077, China
| | - Dangyuan Lei
- Department of Materials Science and Engineering, City University of Hong Kong, Hong Kong, 999077, China
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16
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Mokashi-Punekar S, Zhou Y, Brooks SC, Rosi NL. Construction of Chiral, Helical Nanoparticle Superstructures: Progress and Prospects. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1905975. [PMID: 31815327 DOI: 10.1002/adma.201905975] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Revised: 10/12/2019] [Indexed: 05/27/2023]
Abstract
Chiral nanoparticle (NP) superstructures, in which discrete NPs are assembled into chiral architectures, represent an exciting and growing class of nanomaterials. Their enantiospecific properties make them promising candidates for a variety of potential applications. Helical NP superstructures are a rapidly expanding subclass of chiral nanomaterials in which NPs are arranged in three dimensions about a screw axis. Their intrinsic asymmetry gives rise to a variety of interesting properties, including plasmonic chiroptical activity in the visible spectrum, and they hold immense promise as chiroptical sensors and as components of optical metamaterials. Herein, a concise history of the foundational conceptual advances that helped define the field of chiral nanomaterials is provided, and some of the major achievements in the development of helical nanomaterials are highlighted. Next, the key methodologies employed to construct these materials are discussed, and specific merits that are offered by each assembly methodology are identified, as well as their potential disadvantages. Finally, some specific examples of the emerging applications of these materials are discussed and some areas of future development and research focus are proposed.
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Affiliation(s)
| | - Yicheng Zhou
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA, 15260, USA
| | - Sydney C Brooks
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA, 15260, USA
| | - Nathaniel L Rosi
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA, 15260, USA
- Department of Chemical and Petroleum Engineering, University of Pittsburgh, Pittsburgh, PA, 15260, USA
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17
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Fu C, Chen T, Xiao T, Song Y, Odom T, Liang W, Cai J, Xu H. Formaldehyde Gas Adsorption in High‐Capacity Silver‐Nanoparticle‐Loaded ZIF‐8 and UiO‐66 Frameworks. ChemistrySelect 2020. [DOI: 10.1002/slct.202001094] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Chengming Fu
- College of Chemistry and Chemical Engineering Central South University South Lushan Road Changsha Hunan China
- Changsha Biaolangzhugong Technology Co Ltd East Shanhuan Road, Ningxiang Economic and Development Zone Changsha Hunan China
| | - Tian Chen
- College of Chemistry and Chemical Engineering Central South University South Lushan Road Changsha Hunan China
- Changsha Biaolangzhugong Technology Co Ltd East Shanhuan Road, Ningxiang Economic and Development Zone Changsha Hunan China
| | - Tile Xiao
- Changsha Biaolangzhugong Technology Co Ltd East Shanhuan Road, Ningxiang Economic and Development Zone Changsha Hunan China
| | - Yuecai Song
- School of Physics Science and Electronics Central South University South Lushan Road Changsha Hunan China
| | - Timothy Odom
- Department of Chemistry University of South Florida 4202 East Fowler Avenue Tampa Florida 33620 USA
| | - Wenjie Liang
- College of Chemistry and Chemical Engineering Central South University South Lushan Road Changsha Hunan China
| | - Jianfeng Cai
- Department of Chemistry University of South Florida 4202 East Fowler Avenue Tampa Florida 33620 USA
| | - Hai Xu
- College of Chemistry and Chemical Engineering Central South University South Lushan Road Changsha Hunan China
- Fujian Institute of Research on the Structure Chinese Academy of Sciences 155 Yangqiao West Road Fuzhou Fujian China
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18
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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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19
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Cheng G, Xu D, Lu Z, Liu K. Chiral Self-Assembly of Nanoparticles Induced by Polymers Synthesized via Reversible Addition-Fragmentation Chain Transfer Polymerization. ACS NANO 2019; 13:1479-1489. [PMID: 30702861 DOI: 10.1021/acsnano.8b07151] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Chiral inorganic nanomaterials are of great interest because of their excellent optical properties. Most of the attention has been focused on the utilization of biomolecules or their derivatives as linkers or templates to control the chiral structure of assembled inorganic nanoparticles. Chiral polymers are promising synthetic materials that can be used to replace their biological counterparts. Here, by using poly(methacrylate hydroxyethyl-3-indole propionate) (PIPEMA) and poly(2-hydroxyethyl methacrylate) (PHEMA) synthesized via syndioselective reversible addition-fragmentation chain transfer polymerization, we successfully realized chiral self-assembly of gold nanorods with strong circular dichroism response in the vis-NIR region. Moreover, the intensity of the chiral signal of the assemblies can be regulated by the molecular weight of the polymers. Notably, although the monomers are achiral and no chiral reagents are involved in their synthesis, the main chains of PIPEMA and PHEMA exhibit a preferred-handed helical conformation, which is the origin of chirality of the nanorod assemblies. The preferred-handed helical conformation of polymers is attributed to their syndiotacticity and stabilized by the steric hindrance of the side groups. The addition of chiral carbon atoms at the side groups does not change the preferred-handedness of the polymer main chain, resulting in the assembled nanorod structures with the same chirality. This strategy provides inspiration for the rational design and synthesis of optically active functional synthetic polymers for the preparation of promising chiral nanomaterials.
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Affiliation(s)
- Guiqing Cheng
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry , Jilin University , Changchun , 130012 , People's Republic of China
| | - Duo Xu
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry , Jilin University , Changchun , 130023 , People's Republic of China
| | - Zhongyuan Lu
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry , Jilin University , Changchun , 130012 , People's Republic of China
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry , Jilin University , Changchun , 130023 , People's Republic of China
| | - Kun Liu
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry , Jilin University , Changchun , 130012 , People's Republic of China
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20
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Yu B, Yang Q, Li H, Liu Z, Huang X, Wang Y, Chen H. Gold nanospirals on colloidal gold nanoparticles. J Colloid Interface Sci 2019; 533:304-310. [PMID: 30170280 DOI: 10.1016/j.jcis.2018.08.065] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Revised: 08/20/2018] [Accepted: 08/21/2018] [Indexed: 10/28/2022]
Abstract
Synthesis of asymmetric nanostructures has always been a great challenge. In particular, there are only limited approaches for growing spiral nanowires in solution, and almost all of them require templates. Here, as a step in advancing the synthetic capability at the nanoscale, we report a wet chemistry template-free approach for growing hybrids spiral gold nanowires. The spiral gold nanowires were grown from the surface of colloidal gold nanoparticles, forming hybrid Au nanostructures. As an application of the active surface growth mechanism, the mechanistic understanding enables systematic adjustment of the nanowire morphology. The length and width of the spiral nanowires could be readily adjusted. Furthermore, the number of spiral nanowire on each Au nanoparticle, could be tuned by the pre-hydrolysis of the surface modification reagent. Such versatile system allows creation of complex nanostructures like the octopus-like and spider-like Au hybrids.
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Affiliation(s)
- Beibei Yu
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, PR China
| | - Qian Yang
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, PR China
| | - Hongyan Li
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, PR China
| | - Zhenzhong Liu
- Research Institute of Zhejiang University-Taizhou, Taizhou 318000, PR China
| | - Xiao Huang
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials, Jiangsu National Synergistic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, PR China
| | - Yawen Wang
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, PR China.
| | - Hongyu Chen
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, PR China.
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21
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Kneer LM, Roller EM, Besteiro LV, Schreiber R, Govorov AO, Liedl T. Circular Dichroism of Chiral Molecules in DNA-Assembled Plasmonic Hotspots. ACS NANO 2018; 12:9110-9115. [PMID: 30188691 DOI: 10.1021/acsnano.8b03146] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
The chiral state of a molecule plays a crucial role in molecular recognition and biochemical reactions. Because of this and owing to the fact that most modern drugs are chiral, the sensitive and reliable detection of the chirality of molecules is of great interest to drug development. The majority of naturally occurring biomolecules exhibit circular dichroism (CD) in the UV range. Theoretical studies and several experiments have demonstrated that this UV-CD can be transferred into the plasmonic frequency domain when metal surfaces and chiral biomolecules are in close proximity. Here, we demonstrate that the CD transfer effect can be drastically enhanced by placing chiral molecules, here double-stranded DNA, inside a plasmonic hotspot. By using different particle types (gold, silver, spheres, and rods) and by exploiting the versatility of DNA origami, we were able to systematically study the impact of varying particle distances on the CD transfer efficiency and to demonstrate CD transfer over the whole optical spectrum down to the near-infrared. For this purpose, nanorods were also placed upright on DNA origami sheets, forming strong optical antennas. Theoretical models, demonstrating the intricate relationships between molecular chirality and achiral electric fields, support our experimental findings. From both experimental measurements and theoretical considerations, we conclude that the transferred CD is most intensive for systems with strong plasmonic hotspots, as we find them in relatively small gaps (5-12 nm) between spherical nanoparticles and preferably between the tips of nanorods.
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Affiliation(s)
- Luisa M Kneer
- Fakultät für Physik and Center for Nanoscience , Ludwig-Maximilians-Universität München , Geschwister-Scholl-Platz 1 , 80539 Munich , Germany
| | - Eva-Maria Roller
- Fakultät für Physik and Center for Nanoscience , Ludwig-Maximilians-Universität München , Geschwister-Scholl-Platz 1 , 80539 Munich , Germany
| | - Lucas V Besteiro
- Department of Physics and Astronomy , Ohio University , Athens , Ohio 45701 , United States
| | - Robert Schreiber
- Fakultät für Physik and Center for Nanoscience , Ludwig-Maximilians-Universität München , Geschwister-Scholl-Platz 1 , 80539 Munich , Germany
| | - Alexander O Govorov
- Department of Physics and Astronomy , Ohio University , Athens , Ohio 45701 , United States
- Institute of Fundamental and Frontier Sciences , University of Electronic Science and Technology of China , Chengdu 610054 , China
| | - Tim Liedl
- Fakultät für Physik and Center for Nanoscience , Ludwig-Maximilians-Universität München , Geschwister-Scholl-Platz 1 , 80539 Munich , Germany
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22
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Kulkarni C, Meskers SCJ, Palmans ARA, Meijer EW. Amplifying Chiroptical Properties of Conjugated Polymer Thin-Film Using an Achiral Additive. Macromolecules 2018; 51:5883-5890. [PMID: 30135611 PMCID: PMC6096448 DOI: 10.1021/acs.macromol.8b01077] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Revised: 07/16/2018] [Indexed: 01/05/2023]
Abstract
Chiral conjugated polymers bearing enantiopure side chains offer the possibility to harness the effect of chirality in organic electronic devices. However, its use is hampered by the low degree of circular polarization in absorption (gabs) in most of the conjugated polymer thin-films studied. Here we demonstrate a versatile method to significantly increase the gabs by using a few weight percentages of a commercially available achiral long-chain alcohol as an additive. This additive enhances the chiroptical properties in both absorption and emission by ca. 5-10 times in the thin-films. We envisage that the alcohol additive acts as a plasticizer which enhances the long-range chiral liquid crystalline ordering of the polymer chains, thereby amplifying the chiroptical properties in the thin-film. The application of this methodology to various conjugated polymers has been demonstrated.
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Affiliation(s)
- Chidambar Kulkarni
- Laboratory of Macromolecular and Organic Chemistry and Institute for Complex Molecular Systems, Eindhoven University of Technology, P.O. Box 513, Eindhoven 5600 MB, The Netherlands
| | - Stefan C J Meskers
- Laboratory of Macromolecular and Organic Chemistry and Institute for Complex Molecular Systems, Eindhoven University of Technology, P.O. Box 513, Eindhoven 5600 MB, The Netherlands
| | - Anja R A Palmans
- Laboratory of Macromolecular and Organic Chemistry and Institute for Complex Molecular Systems, Eindhoven University of Technology, P.O. Box 513, Eindhoven 5600 MB, The Netherlands
| | - E W Meijer
- Laboratory of Macromolecular and Organic Chemistry and Institute for Complex Molecular Systems, Eindhoven University of Technology, P.O. Box 513, Eindhoven 5600 MB, The Netherlands
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23
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Liu Y, Wang YM, Zhu WY, Zhang CH, Tang H, Jiang JH. Conjugated polymer nanoparticles-based fluorescent biosensor for ultrasensitive detection of hydroquinone. Anal Chim Acta 2018; 1012:60-65. [PMID: 29475474 DOI: 10.1016/j.aca.2018.01.027] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Revised: 01/04/2018] [Accepted: 01/06/2018] [Indexed: 11/26/2022]
Abstract
This work describes a simple and sensitive fluorescent method for detection of hydroquinone utilizing conjugated polymer nanoparticles (CPNs). The CPNs serve both as a catalyst to accelerate the conversion of hydroquinone to benzoquinone and a fluorescent probe. In the presence of hydroquinone, the fluorescence of CPNs can be effectively quenched by benzoquinone. The detection limit of hydroquinone was down to 5 nM and excellent selectivity toward possible interferences was obtained. This method was successfully applied for hydroquinone detection in lake water and satisfactory results were achieved.
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Affiliation(s)
- Yuan Liu
- State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, PR China
| | - Yu-Min Wang
- State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, PR China
| | - Wu-Yang Zhu
- State Key Laboratory for Infectious Disease Prevention and Control, National Institute for Viral Disease Control and Prevention, Chinese Center for Viral Disease Control and Prevention, Beijing, PR China
| | - Chong-Hua Zhang
- State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, PR China
| | - Hao Tang
- State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, PR China.
| | - Jian-Hui Jiang
- State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, PR China.
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24
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Kulkarni C, Di Nuzzo D, Meijer EW, Meskers SCJ. Pitch and Handedness of the Cholesteric Order in Films of a Chiral Alternating Fluorene Copolymer. J Phys Chem B 2017; 121:11520-11527. [PMID: 29200297 PMCID: PMC6150679 DOI: 10.1021/acs.jpcb.7b10236] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
![]()
The
molecular organization in thermally annealed films of poly(9,9-bis((S)-3,7-dimethyloctyl)-2,7-fluorene-alt-benzothiadiazole)
is investigated using polarized light. Measurement of linear polarization
in transmission and reflection as a function of layer thickness and
orientation directly show a left handed cholesteric organization with
a pitch length of 600 nm. Results are corroborated by measurements
of circularly polarized reflection and generalized ellipsometry and
are compared to calculations of the optical properties based on the
Maugin–Oseen–DeVries model. For wavelengths near the
lowest allowed optical transition, light with the same handedness
as the cholesteric arrangement (left) is found to be reflected and
transmitted with a probability higher than right circularly polarized
light. The high transmission for left polarized light is interpreted
as an optical manifestation of the Borrmann effect.
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Affiliation(s)
- Chidambar Kulkarni
- Department of Chemical Engineering and Chemistry and Institute of Complex Molecular Systems, Eindhoven University of Technology , 5612 AZ Eindhoven, The Netherlands
| | - Daniele Di Nuzzo
- Department of Physics, University of Cambridge , Cambridge CB2 1 TN, United Kingdom
| | - E W Meijer
- Department of Chemical Engineering and Chemistry and Institute of Complex Molecular Systems, Eindhoven University of Technology , 5612 AZ Eindhoven, The Netherlands
| | - Stefan C J Meskers
- Department of Chemical Engineering and Chemistry and Institute of Complex Molecular Systems, Eindhoven University of Technology , 5612 AZ Eindhoven, The Netherlands
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25
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26
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He J, Wang Y, Fan Z, Wang Y, Zhang H, Chen H. Spirals and helices by asymmetric active surface growth. NANOSCALE 2017; 9:18352-18358. [PMID: 29143848 DOI: 10.1039/c7nr06574d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We show that spiral and helical Au nanowires can be directly grown via the active surface growth mechanism. The formation of spiral nanowires as opposed to straight nanowires is not triggered by the presence of a particular reactant, but controlled by the ratio of reactant concentrations. We propose that the asymmetric blocking of the Au-substrate interface induces imbalanced growth of the nanowire, causing it to curve. Blocking a single corner of the active interface leads to spiral nanowires whereas blocking two corners leads to helical nanowires. Spiral and helical nanowires become more frequent when the diffusion of Au is the limiting factor, as the reactant ratio falls below a critical value. The transition from helices to spirals and finally to nearly straight nanowires indicates a gradual loss of the blocked sites, hence supporting the asymmetric blocking mechanism.
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Affiliation(s)
- Jiating He
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371 Singapore.
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27
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Zeng C, Jin R. Chiral Gold Nanoclusters: Atomic Level Origins of Chirality. Chem Asian J 2017; 12:1839-1850. [DOI: 10.1002/asia.201700023] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2017] [Revised: 03/30/2017] [Indexed: 12/27/2022]
Affiliation(s)
- Chenjie Zeng
- Department of Chemistry Carnegie Mellon University Pittsburgh PA 15213 USA
| | - Rongchao Jin
- Department of Chemistry Carnegie Mellon University Pittsburgh PA 15213 USA
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28
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Wu J, Liu Y, Ma X, Liu P, Gu C, Dai B. Cu(II)-Catalyzed Ligand-Free Oxidation of Diarylmethanes and Second Alcohols in Water. CHINESE J CHEM 2017. [DOI: 10.1002/cjoc.201700115] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Jianglong Wu
- School of Chemistry and Chemical Engineering, the Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan; Shihezi University; Shihezi Xinjiang 832003 China
| | - Yan Liu
- School of Chemistry and Chemical Engineering, the Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan; Shihezi University; Shihezi Xinjiang 832003 China
| | - Xiaowei Ma
- School of Chemistry and Chemical Engineering, the Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan; Shihezi University; Shihezi Xinjiang 832003 China
| | - Ping Liu
- School of Chemistry and Chemical Engineering, the Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan; Shihezi University; Shihezi Xinjiang 832003 China
| | - Chengzhi Gu
- School of Chemistry and Chemical Engineering, the Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan; Shihezi University; Shihezi Xinjiang 832003 China
| | - Bin Dai
- School of Chemistry and Chemical Engineering, the Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan; Shihezi University; Shihezi Xinjiang 832003 China
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29
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Hentschel M, Schäferling M, Duan X, Giessen H, Liu N. Chiral plasmonics. SCIENCE ADVANCES 2017; 3:e1602735. [PMID: 28560336 PMCID: PMC5435411 DOI: 10.1126/sciadv.1602735] [Citation(s) in RCA: 321] [Impact Index Per Article: 45.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Accepted: 03/16/2017] [Indexed: 05/19/2023]
Abstract
We present a comprehensive overview of chirality and its optical manifestation in plasmonic nanosystems and nanostructures. We discuss top-down fabricated structures that range from solid metallic nanostructures to groupings of metallic nanoparticles arranged in three dimensions. We also present the large variety of bottom-up synthesized structures. Using DNA, peptides, or other scaffolds, complex nanoparticle arrangements of up to hundreds of individual nanoparticles have been realized. Beyond this static picture, we also give an overview of recent demonstrations of active chiral plasmonic systems, where the chiral optical response can be controlled by an external stimulus. We discuss the prospect of using the unique properties of complex chiral plasmonic systems for enantiomeric sensing schemes.
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Affiliation(s)
- Mario Hentschel
- 4th Physics Institute and Research Center SCoPE, University of Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany
| | - Martin Schäferling
- 4th Physics Institute and Research Center SCoPE, University of Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany
| | - Xiaoyang Duan
- Max Planck Institute for Intelligent Systems, Heisenbergstrasse 3, 70569 Stuttgart, Germany
- Kirchhoff Institute for Physics, University of Heidelberg, Im Neuenheimer Feld 227, 69120 Heidelberg, Germany
| | - Harald Giessen
- 4th Physics Institute and Research Center SCoPE, University of Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany
| | - Na Liu
- Max Planck Institute for Intelligent Systems, Heisenbergstrasse 3, 70569 Stuttgart, Germany
- Kirchhoff Institute for Physics, University of Heidelberg, Im Neuenheimer Feld 227, 69120 Heidelberg, Germany
- Corresponding author.
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30
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Ma W, Xu L, de Moura AF, Wu X, Kuang H, Xu C, Kotov NA. Chiral Inorganic Nanostructures. Chem Rev 2017; 117:8041-8093. [DOI: 10.1021/acs.chemrev.6b00755] [Citation(s) in RCA: 485] [Impact Index Per Article: 69.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
| | | | - André F. de Moura
- Department
of Chemistry, Federal University of São Carlos, CP 676, CEP 13.565-905, São Carlos, SP, Brazil
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31
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Zhao Y, Yin L, Liu J, Chen H, Zhang W. Helical screw sense bias in chiral polyfluorene stimulated by solvent. Chirality 2017; 29:107-114. [DOI: 10.1002/chir.22677] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2016] [Revised: 02/12/2017] [Accepted: 02/14/2017] [Indexed: 11/12/2022]
Affiliation(s)
- Yin Zhao
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science; Soochow University; Suzhou China
| | - Lu Yin
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science; Soochow University; Suzhou China
| | - Jingjing Liu
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science; Soochow University; Suzhou China
| | - Hailing Chen
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science; Soochow University; Suzhou China
| | - Wei Zhang
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science; Soochow University; Suzhou China
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32
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Liu R, Cui Q, Wang C, Wang X, Yang Y, Li L. Preparation of Sialic Acid-Imprinted Fluorescent Conjugated Nanoparticles and Their Application for Targeted Cancer Cell Imaging. ACS APPLIED MATERIALS & INTERFACES 2017; 9:3006-3015. [PMID: 28051302 DOI: 10.1021/acsami.6b14320] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Fluorescent conjugated polymer nanoparticles have attracted great interest for applications in biological imaging owing to their excellent optical properties and low cytotoxicity; however, a lack of effective targeting limits their use. In this work, we design and synthesize a fluorescent conjugated polymer modified with a phenylboronic acid group, which can covalently bind with cis-diol-containing compounds, such as sialic acid (SA), by forming a cyclic ester. However, the obtained conjugated polymer nanoparticles failed to discriminate between cancer cells, with or without SA overexpressed surfaces (such as DU 145 and HeLa cells, respectively). To address this problem, we introduced SA template molecules into the polymer nanoparticles during the reprecipitation process and then removed the template by adjusting the solution pH. The SA-imprinted nanoparticles showed a uniform size around 30 nm and enhanced fluorescence intensity compared with unmodified polymer nanoparticles. The SA-imprinted nanoparticles exhibited selective staining for DU 145 cancer cells and did not enter HeLa cells even after long incubation times. Thus, we present a facile method to prepare fluorescent nanoparticles for applications in targeted cancer cell imaging.
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Affiliation(s)
- Ronghua Liu
- State Key Lab for Advanced Metals and Materials, School of Materials Science and Engineering, University of Science and Technology Beijing , Beijing 100083, China
| | - Qianling Cui
- State Key Lab for Advanced Metals and Materials, School of Materials Science and Engineering, University of Science and Technology Beijing , Beijing 100083, China
| | - Chun Wang
- State Key Lab for Advanced Metals and Materials, School of Materials Science and Engineering, University of Science and Technology Beijing , Beijing 100083, China
| | - Xiaoyu Wang
- State Key Lab for Advanced Metals and Materials, School of Materials Science and Engineering, University of Science and Technology Beijing , Beijing 100083, China
| | - Yu Yang
- State Key Lab for Advanced Metals and Materials, School of Materials Science and Engineering, University of Science and Technology Beijing , Beijing 100083, China
| | - Lidong Li
- State Key Lab for Advanced Metals and Materials, School of Materials Science and Engineering, University of Science and Technology Beijing , Beijing 100083, China
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33
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Shinmori H, Mochizuki C. Strong chiroptical activity from achiral gold nanorods assembled with proteins. Chem Commun (Camb) 2017; 53:6569-6572. [DOI: 10.1039/c7cc03089d] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The optical activity of side-by-side gold nanorod assembly induced by interaction with proteins has the highest anisotropy factor in colloidal solution.
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Affiliation(s)
- Hideyuki Shinmori
- Interdisciplinary Graduate School of Medicine and Engineering
- University of Yamanashi
- Kofu 400-8510
- Japan
| | - Chihiro Mochizuki
- Interdisciplinary Graduate School of Medicine and Engineering
- University of Yamanashi
- Kofu 400-8510
- Japan
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34
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Zhu D, Liu M, Liu X, Liu Y, Prasad PN, Swihart MT. Au–Cu2−xSe heterogeneous nanocrystals for efficient photothermal heating for cancer therapy. J Mater Chem B 2017; 5:4934-4942. [DOI: 10.1039/c7tb01004d] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
In this study, we show that Au–Cu2−xSe heterogeneous nanocrystals have great promise for use in photothermal therapy (PTT).
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Affiliation(s)
- Dewei Zhu
- Department of Chemical and Biological Engineering
- University at Buffalo
- The State University of New York
- Buffalo
- USA
| | - Maixian Liu
- Institute for Lasers
- Photonics, and Biophotonics
- University at Buffalo
- The State University of New York
- Buffalo
| | - Xin Liu
- Department of Chemical and Biological Engineering
- University at Buffalo
- The State University of New York
- Buffalo
- USA
| | - Yang Liu
- Department of Chemical and Biological Engineering
- University at Buffalo
- The State University of New York
- Buffalo
- USA
| | - Paras N. Prasad
- Institute for Lasers
- Photonics, and Biophotonics
- University at Buffalo
- The State University of New York
- Buffalo
| | - Mark T. Swihart
- Department of Chemical and Biological Engineering
- University at Buffalo
- The State University of New York
- Buffalo
- USA
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35
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Wang X, Tang Z. Circular Dichroism Studies on Plasmonic Nanostructures. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2017; 13:1601115. [PMID: 27273904 DOI: 10.1002/smll.201601115] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Revised: 04/22/2016] [Indexed: 06/06/2023]
Abstract
In recent years, optical chirality of plasmonic nanostructures has aroused great interest because of innovative fundamental understanding as well as promising potential applications in optics, catalysis and sensing. Herein, state-of-the-art studies on circular dichroism (CD) characteristics of plasmonic nanostructures are summarized. The hybrid of achiral plasmonic nanoparticles (NPs) and chiral molecules is explored to generate a new CD response at the plasmon resonance as well as the enhanced CD intensity of chiral molecules in the UV region, owing to the Coulomb static and dynamic dipole interactions between plasmonic NPs and chiral molecules. As for chiral assembly of plasmonic NPs, plasmon-plasmon interactions between the building blocks are found to induce generation of intense CD response at the plasmon resonance. Three-dimensional periodical arrangement of plasmonic NPs into macroscale chiral metamaterials is further introduced from the perspective of negative refraction and photonic bandgap. A strong CD signal is also discerned in achiral planar plasmonic nanostructures under illumination of circular polarized plane wave at oblique incidence or input vortex beam at normal incidence. Finally perspectives, especially on future investigation of time-resolved CD responses, are presented.
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Affiliation(s)
- Xiaoli Wang
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing, 100190, P.R. China
| | - Zhiyong Tang
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing, 100190, P.R. China
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36
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Fang W, Wei Y, Shi M. A gold(i)-catalyzed intramolecular tandem cyclization reaction of alkylidenecyclopropane-containing alkynes. Chem Commun (Camb) 2017; 53:11666-11669. [DOI: 10.1039/c7cc07042j] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A novel strategy for the gold(i)-catalyzed intramolecular tandem cyclization reaction of ortho-(arylethynyl)arenemethylenecyclopropanes has been developed, providing a facile access to functionalized 11H-benzo[a]fluorene derivatives.
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Affiliation(s)
- Wei Fang
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- School of Chemistry & Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Yin Wei
- State Key Laboratory of Organometallic Chemistry
- University of Chinese Academy of Sciences
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
| | - Min Shi
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- School of Chemistry & Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
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37
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Jin X, Jiang J, Liu M. Reversible Plasmonic Circular Dichroism via Hybrid Supramolecular Gelation of Achiral Gold Nanorods. ACS NANO 2016; 10:11179-11186. [PMID: 28024330 DOI: 10.1021/acsnano.6b06233] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The fabrication of chiroptical plasmonic nanomaterials such as chiral plasmonic gold nanorods (GNRs) has been attracting great interest. Generally, in order to realize the plasmonic circular dichroism (PCD) from achiral GNRs, it is necessary to partially replace the surface-coated cetyltrimethylammonium bromide with chiral molecules. Here, we present a supramolecular approach to generate and modulate the PCD of GNRs through the hybrid gelation of GNRs with an amphiphilic chiral dendron gelator. Upon gelation, the PCD could be produced and further regulated depending on the ratio of the dendrons to GNRs. It was revealed that the wrapping of the self-assembled nanofibers around the GNRs is crucial for generating the PCD. Furthermore, the hybrid gel underwent a thermotriggered gel-sol and sol-gel transformation, during which the PCD can disappear (solution) and reappear (gel), respectively, and such process can be repeated many times. In addition, the hybrid gel could also undergo shrinkage upon addition of a slight amount of Mg2+ ions, during which the PCD disappeared also. Thus, through the gel formation and subsequent metal ion- or temperature-triggered phase transition, PCD can be reversibly modulated. The results not only clarified the generation mechanism of PCD from the achiral GNRs without the chiral modification on the surface but also offered a simple and efficient way to modulate the PCD.
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Affiliation(s)
- Xue Jin
- Beijing National Laboratory for Molecular Science, CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, People's Republic of China
- University of Chinese Academy of Sciences , Beijing 100049, People's Republic of China
| | - Jian Jiang
- National Center for Nanoscience and Technology, CAS Center for Excellence in Nanoscience , Beijing 100190, People's Republic of China
| | - Minghua Liu
- Beijing National Laboratory for Molecular Science, CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, People's Republic of China
- National Center for Nanoscience and Technology, CAS Center for Excellence in Nanoscience , Beijing 100190, People's Republic of China
- A Collaborative Innovation Center of Chemical Science and Engineering , Tianjin 300072, People's Republic of China
- University of Chinese Academy of Sciences , Beijing 100049, People's Republic of China
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38
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Lomelí-Rosales D, Rangel-Salas II, Zamudio-Ojeda A, Carbajal-Arízaga GG, Godoy-Alcántar C, Manríquez-González R, Alvarado-Rodríguez JG, Martínez-Otero D, Cortes-Llamas SA. Chiral Imidazolium-Functionalized Au Nanoparticles: Reversible Aggregation and Molecular Recognition. ACS OMEGA 2016; 1:876-885. [PMID: 31457170 PMCID: PMC6640785 DOI: 10.1021/acsomega.6b00141] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Accepted: 10/25/2016] [Indexed: 06/10/2023]
Abstract
Gold nanoparticles (AuNPs) stabilized by imidazolium salts derived from amino acids [glycine (1), rac-alanine (2), l-phenylalanine (3), and rac-methionine (4)] were prepared. The AuNPs were stabilized the most by 4, which kept the particles dispersed in water for months at pH > 5.5. These AuNPs exhibited a well-defined absorption band at 517 nm and had an average particle size of 11.21 ± 0.07 nm. The 4-AuNPs were reversibly aggregated by controlling the pH of the solution. Chiral R,R-4-AuNPs and S,S-4-AuNPs were synthesized, and the chiral environment on the nanoparticle surface was confirmed using circular dichroism; these nanoparticles exhibited a molecular recognition of chiral substrates. Furthermore, they showed potential for separating racemic mixtures when supported on a layered double hydroxide.
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Affiliation(s)
- Diego
Alberto Lomelí-Rosales
- Departamento de Química,
Centro Universitario de Ciencias
Exactas e Ingenierías and Departamento de Física, Centro Universitario
de Ciencias Exactas e Ingenierías, Universidad de Guadalajara, Blvd. Marcelino García Barragán #1421, esq. Olímpica, C.P. 44430 Guadalajara, Jalisco, Mexico
| | - Irma Idalia Rangel-Salas
- Departamento de Química,
Centro Universitario de Ciencias
Exactas e Ingenierías and Departamento de Física, Centro Universitario
de Ciencias Exactas e Ingenierías, Universidad de Guadalajara, Blvd. Marcelino García Barragán #1421, esq. Olímpica, C.P. 44430 Guadalajara, Jalisco, Mexico
| | - Adalberto Zamudio-Ojeda
- Departamento de Química,
Centro Universitario de Ciencias
Exactas e Ingenierías and Departamento de Física, Centro Universitario
de Ciencias Exactas e Ingenierías, Universidad de Guadalajara, Blvd. Marcelino García Barragán #1421, esq. Olímpica, C.P. 44430 Guadalajara, Jalisco, Mexico
| | - Gregorio Guadalupe Carbajal-Arízaga
- Departamento de Química,
Centro Universitario de Ciencias
Exactas e Ingenierías and Departamento de Física, Centro Universitario
de Ciencias Exactas e Ingenierías, Universidad de Guadalajara, Blvd. Marcelino García Barragán #1421, esq. Olímpica, C.P. 44430 Guadalajara, Jalisco, Mexico
| | - Carolina Godoy-Alcántar
- Centro
de Investigaciones Químicas, IICBA, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, Col. Chamilpa, Cuernavaca, Morelos 62209, Mexico
| | - Ricardo Manríquez-González
- Departamento
de Madera, Celulosa y Papel, Centro Universitario
de Ciencias Exactas e Ingenierías, Universidad de Guadalajara, km 15.5 de la Carretera Guadalajara-Nogales, C.P. 45220 Zapopan, Jalisco, Mexico
| | - José Guadalupe Alvarado-Rodríguez
- Universidad
Autónoma del Estado de Hidalgo, Unidad Universitaria, km 4.5 Carretera Pachuca-Tulancingo, C.P. 42184 Mineral de la Reforma, Hidalgo, Mexico
| | - Diego Martínez-Otero
- Centro Conjunto
de Investigación en Química Sustentable, UAEM-UNAM, Carretera Toluca-Atlacomulco km 14.5, C.P. 50200 Toluca, Estado de
México, Mexico
| | - Sara Angélica Cortes-Llamas
- Departamento de Química,
Centro Universitario de Ciencias
Exactas e Ingenierías and Departamento de Física, Centro Universitario
de Ciencias Exactas e Ingenierías, Universidad de Guadalajara, Blvd. Marcelino García Barragán #1421, esq. Olímpica, C.P. 44430 Guadalajara, Jalisco, Mexico
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39
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Kumar J, Thomas KG, Liz-Marzán LM. Nanoscale chirality in metal and semiconductor nanoparticles. Chem Commun (Camb) 2016; 52:12555-12569. [PMID: 27752651 PMCID: PMC5317218 DOI: 10.1039/c6cc05613j] [Citation(s) in RCA: 107] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Accepted: 08/17/2016] [Indexed: 12/21/2022]
Abstract
The field of chirality has recently seen a rejuvenation due to the observation of chirality in inorganic nanomaterials. The advancements in understanding the origin of nanoscale chirality and the potential applications of chiroptical nanomaterials in the areas of optics, catalysis and biosensing, among others, have opened up new avenues toward new concepts and design of novel materials. In this article, we review the concept of nanoscale chirality in metal nanoclusters and semiconductor quantum dots, then focus on recent experimental and theoretical advances in chiral metal nanoparticles and plasmonic chirality. Selected examples of potential applications and an outlook on the research on chiral nanomaterials are additionally provided.
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Affiliation(s)
- Jatish Kumar
- CIC biomaGUNE, Paseo de Miramón 182, 20009 Donostia - San Sebastián, Spain. and School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram (IISER-TVM), CET Campus, Thiruvananthapuram, 695 016, India
| | - K George Thomas
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram (IISER-TVM), CET Campus, Thiruvananthapuram, 695 016, India
| | - Luis M Liz-Marzán
- CIC biomaGUNE, Paseo de Miramón 182, 20009 Donostia - San Sebastián, Spain. and Ikerbasque, Basque Foundation for Science, 48013 Bilbao, Spain
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40
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Lim CK, Cho MJ, Singh A, Li Q, Kim WJ, Jee HS, Fillman KL, Carpenter SH, Neidig ML, Baev A, Swihart MT, Prasad PN. Manipulating Magneto-Optic Properties of a Chiral Polymer by Doping with Stable Organic Biradicals. NANO LETTERS 2016; 16:5451-5455. [PMID: 27518762 DOI: 10.1021/acs.nanolett.6b01874] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We report the first example of tuning the large magneto-optic activity of a chiral polymer by addition of stable organic biradicals. The spectral dispersion of Verdet constant, which quantifies magneto-optic response, differs substantially between the base polymer and the nanocomposite. We employed a microscopic model, supported by atomistic calculations, to rationalize the behavior of this nanocomposite system. The suggested mechanism involves magnetic coupling between helical conjugated polymer fibrils, with spatially delocalized helical π-electron density, and the high density of spin states provided by the biradical dopants, which leads to synergistic enhancement of magneto-optic response. Our combined experimental and theoretical studies reveal that the manipulation of magnetic coupling in this new class of magneto-optic materials offers an opportunity to tailor the magnitude, sign, and spectral dispersion of the Verdet constant over a broad range of wavelengths, from the UV to the near-IR. This provides a new strategy for creating conformable materials with extraordinary magneto-optic activity, which can ultimately enable new applications requiring spatially and temporally resolved measurement of extremely weak magnetic fields. In particular, magneto-optic materials, presently employed in technologies like optical isolators and optical circulators, could be used in ultrasensitive optical magnetometers. This, in turn, could open a path toward mapping of brain activity via optical magnetoencephalography.
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Affiliation(s)
- Chang-Keun Lim
- The Institute for Lasers, Photonics and Biophotonics, State University of New York at Buffalo , Buffalo, New York 14260, United States
| | - Min Ju Cho
- The Institute for Lasers, Photonics and Biophotonics, State University of New York at Buffalo , Buffalo, New York 14260, United States
| | - Ajay Singh
- The Institute for Lasers, Photonics and Biophotonics, State University of New York at Buffalo , Buffalo, New York 14260, United States
| | - Qi Li
- Department of Chemical and Biological Engineering, State University of New York at Buffalo , Buffalo, New York 14260, United States
| | - Won Jin Kim
- The Institute for Lasers, Photonics and Biophotonics, State University of New York at Buffalo , Buffalo, New York 14260, United States
| | - Hong Sub Jee
- The Institute for Lasers, Photonics and Biophotonics, State University of New York at Buffalo , Buffalo, New York 14260, United States
| | - Kathlyn L Fillman
- Department of Chemistry, University of Rochester , Rochester, New York 14627, United States
| | - Stephanie H Carpenter
- Department of Chemistry, University of Rochester , Rochester, New York 14627, United States
| | - Michael L Neidig
- Department of Chemistry, University of Rochester , Rochester, New York 14627, United States
| | - Alexander Baev
- The Institute for Lasers, Photonics and Biophotonics, State University of New York at Buffalo , Buffalo, New York 14260, United States
| | - Mark T Swihart
- The Institute for Lasers, Photonics and Biophotonics, State University of New York at Buffalo , Buffalo, New York 14260, United States
- Department of Chemical and Biological Engineering, State University of New York at Buffalo , Buffalo, New York 14260, United States
| | - Paras N Prasad
- The Institute for Lasers, Photonics and Biophotonics, State University of New York at Buffalo , Buffalo, New York 14260, United States
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41
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Kuang X, Ye S, Li X, Ma Y, Zhang C, Tang B. A new type of surface-enhanced Raman scattering sensor for the enantioselective recognition of d/l-cysteine and d/l-asparagine based on a helically arranged Ag NPs@homochiral MOF. Chem Commun (Camb) 2016; 52:5432-5. [DOI: 10.1039/c6cc00320f] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
For the first time, we report the synthesis of Ag NPs arranged in a helical structure on a chiral MOF. This material can serve as a new type of SERS sensor for the efficient recognition of enantiomers.
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Affiliation(s)
- Xuan Kuang
- College of Chemistry
- Chemical Engineering and Materials Science
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
| | - Sujuan Ye
- College of Chemistry
- Chemical Engineering and Materials Science
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
| | - Xiangyuan Li
- College of Chemistry
- Chemical Engineering and Materials Science
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
| | - Yu Ma
- College of Chemistry
- Chemical Engineering and Materials Science
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
| | - Caiyun Zhang
- College of Chemistry
- Chemical Engineering and Materials Science
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
| | - Bo Tang
- College of Chemistry
- Chemical Engineering and Materials Science
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
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Liang Z, Bernardino K, Han J, Zhou Y, Sun K, de Moura AF, Kotov NA. Optical anisotropy and sign reversal in layer-by-layer assembled films from chiral nanoparticles. Faraday Discuss 2016; 191:141-157. [DOI: 10.1039/c6fd00064a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Chiral anisotropy and related optical effects at the nanoscale represent some of the most dynamic areas of nanomaterials today. Translation of optical activity of chiral semiconductor and metallic nanoparticles (NPs) into optoelectronic devices requires preparation of thin films from chiral NPs on both flat and curved surfaces. In this paper we demonstrate that chiral NP films can be made via layer-by-layer assembly (LBL) using negatively charged chiral CdS NPs, stabilized by d- and l-cysteine and positively charged polyelectrolytes, as building blocks. LBL coatings from NPs combine simplicity of preparation and strong optical activity. Circular extinction measurements using circular dichroism instruments indicate that the film possess four chiroptical bands at 280, 320, 350, and 390 nm. The latter two bands at 390 and 350 nm are associated with the band gap transitions (chiral excitons), while the former two are attributed to transitions involving surface ligands. When NPs are assembled in LBL films, the rotatory activity and the sign for circular extinction associated with the electronic transition in the inorganic core of the NPs is conserved. However, this is not true for circular extinction bands at short wavelengths: the sign of the rotatory optical activity is reversed. This effect is attributed to the change of the conformation of surface ligands in the polyelectrolyte matrix, which was confirmed both by semi-empirical and density functional (DFT) quantum mechanical calculations. Circular dichroism spectra calculated using a DFT algorithm closely match the experimental spectra of CdS NPs. These findings indicate that the spectroscopic methods sensitive to chirality of the surface ligands can be used to investigate fine structural changes in the surface layer of nanocolloids. Strong rotatory optical activity of nanostructured semiconductor films opens the possibilities for new polarization-based optical devices.
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Affiliation(s)
- Zhumei Liang
- Department of Chemical Engineering
- University of Michigan
- Ann Arbor
- USA
- Biointerfaces Institute
| | - Kalil Bernardino
- Department of Chemistry
- Federal University of São Carlos
- São Carlos
- Brazil
| | - Jishu Han
- Department of Chemical Engineering
- University of Michigan
- Ann Arbor
- USA
- Biointerfaces Institute
| | - Yunlong Zhou
- Department of Chemical Engineering
- University of Michigan
- Ann Arbor
- USA
- Biointerfaces Institute
| | - Kai Sun
- Department of Materials Science and Engineering
- University of Michigan
- Ann Arbor
- USA
| | - André F. de Moura
- Department of Chemistry
- Federal University of São Carlos
- São Carlos
- Brazil
| | - Nicholas A. Kotov
- Department of Chemical Engineering
- University of Michigan
- Ann Arbor
- USA
- Biointerfaces Institute
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Mäsing F, Mardyukov A, Doerenkamp C, Eckert H, Malkus U, Nüsse H, Klingauf J, Studer A. Kontrollierte lichtvermittelte Synthese von Gold-Nanopartikeln über Norrish-Typ-I-Reaktion in photoaktiven Polymeren. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201505133] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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44
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Mäsing F, Mardyukov A, Doerenkamp C, Eckert H, Malkus U, Nüsse H, Klingauf J, Studer A. Controlled Light-Mediated Preparation of Gold Nanoparticles by a Norrish Type I Reaction of Photoactive Polymers. Angew Chem Int Ed Engl 2015; 54:12612-7. [DOI: 10.1002/anie.201505133] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2015] [Revised: 07/20/2015] [Indexed: 12/22/2022]
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45
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Chulhai DV, Jensen L. Plasmonic circular dichroism of 310- and α-helix using a discrete interaction model/quantum mechanics method. J Phys Chem A 2015; 119:5218-23. [PMID: 25474537 DOI: 10.1021/jp5099188] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Plasmonic circular dichroism (CD) of chiral molecules in the near field of plasmonic nanoparticles (NPs) may be used to enhance molecular CD signatures or to induce a CD signal at the plasmon resonance. A recent few-states theory explored these effects for model systems and showed an orientation dependence of the sign of the induced CD signal for spherical NPs. Here, we use the discrete interaction model/quantum mechanical (DIM/QM) method to simulate the CD and plasmonic CD of the 310- and α-helix conformations of a short alanine peptide. We find that the interactions between the molecule and the plasmon lead to significant changes in the CD spectra. In the plasmon region, we find that the sign of the CD depends strongly on the orientation of the molecule as well as specific interactions with the NP through image dipole effects. A small enhancement of the CD is found in the molecular region of the spectrum, however, the molecular signatures may be significantly altered through interactions with the NP. We also show that the image dipole effect can result in induced plasmonic CD even for achiral molecules. Overall, we find that the specific interactions with the NP can lead to large changes to the CD spectrum that complicates the interpretation of the results.
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Affiliation(s)
- Dhabih V Chulhai
- Department of Chemistry, The Pennsylvania State University, 104 Chemistry Building, University Park, Pennsylvania 16802, United States
| | - Lasse Jensen
- Department of Chemistry, The Pennsylvania State University, 104 Chemistry Building, University Park, Pennsylvania 16802, United States
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46
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Senthilkumar T, Asha SK. An easy ‘Filter-and-Separate’ method for enantioselective separation and chiral sensing of substrates using a biomimetic homochiral polymer. Chem Commun (Camb) 2015; 51:8931-4. [DOI: 10.1039/c5cc01532d] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new homochiral polyfluorene appended with l-glutamic acid demonstrated successful heterogeneous enatioselective separation of a wide variety of enantiomers from their aqueous racemic mixtures by selective uptake of l-enantiomer into the polymer.
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Affiliation(s)
- T. Senthilkumar
- Polymer Science and Engineering Division
- CSIR-National Chemical Laboratory
- Pune-411008
- India
| | - S. K. Asha
- Polymer Science and Engineering Division
- CSIR-National Chemical Laboratory
- Pune-411008
- India
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47
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Shi H, Yang F, Li W, Zhao W, Nie K, Dong B, Liu Z. A review: fabrications, detections and applications of peptide nucleic acids (PNAs) microarray. Biosens Bioelectron 2014; 66:481-9. [PMID: 25499661 DOI: 10.1016/j.bios.2014.12.010] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2014] [Revised: 11/25/2014] [Accepted: 12/02/2014] [Indexed: 01/24/2023]
Abstract
Peptide nucleic acid (PNA) is a mimic of DNA that shows a high chemical stability and can survive the enzymatic degradation of nucleases and proteases. The superior binding properties of PNA enable the formation of PNA/DNA or PNA/RNA duplex with excellent thermal stability and unique ionic strength effect. The introduction of microarray makes it possible to achieve accurate, high throughput parallel analysis of DNA or RNA with a highly integrated and low reagents consuming device. This powerful tool expands the applications of PNA in genotyping based on single nucleotide polymorphism (SNP) detection, the monitoring of disease-related miRNA expression and pathogen detection. This review paper discusses the fabrications of PNA microarrays through in situ synthesis strategy or spotting method by automatic devices, the various detection methods for the microarray-based hybridization and the current applications of PNA microarrays.
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Affiliation(s)
- Huanhuan Shi
- Institute of Biomedical Engineering, School of Geosciences and Info-Physics, Central South University, Changsha 410083, China
| | - Feipeng Yang
- Institute of Biomedical Engineering, School of Geosciences and Info-Physics, Central South University, Changsha 410083, China
| | - Wenjia Li
- Institute of Biomedical Engineering, School of Geosciences and Info-Physics, Central South University, Changsha 410083, China
| | - Weiwei Zhao
- Institute of Biomedical Engineering, School of Geosciences and Info-Physics, Central South University, Changsha 410083, China
| | - Kaixuan Nie
- Institute of Biomedical Engineering, School of Geosciences and Info-Physics, Central South University, Changsha 410083, China
| | - Bo Dong
- Institute of Biomedical Engineering, School of Geosciences and Info-Physics, Central South University, Changsha 410083, China
| | - Zhengchun Liu
- Institute of Biomedical Engineering, School of Geosciences and Info-Physics, Central South University, Changsha 410083, China.
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48
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Iocozzia J, Xu H, Pang X, Xia H, Bunning T, White T, Lin Z. Star-like polymer click-functionalized with small capping molecules: an initial investigation into properties and improving solubility in liquid crystals. RSC Adv 2014. [DOI: 10.1039/c4ra09597a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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49
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Li X, Zhu L, Duan S, Zhao Y, Ågren H. Aggregation-induced chiral symmetry breaking of a naphthalimide–cyanostilbene dyad. Phys Chem Chem Phys 2014; 16:23854-60. [DOI: 10.1039/c4cp04070h] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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50
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Hao C, Xu L, Ma W, Wang L, Kuang H, Xu C. Assembled plasmonic asymmetric heterodimers with tailorable chiroptical response. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2014; 10:1805-1812. [PMID: 24523129 DOI: 10.1002/smll.201303755] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2013] [Indexed: 06/03/2023]
Abstract
Directed nanocrystal (NC) heteroassemblies could potentially achieve tailorable multiplex circular dichroism (CD) bands. Here, for the first time, we developed assembly of nanoparticle (NP)-nanorod (NR) chiral heterodimers with chiral molecules to explore their chiroptical activities. The experimental results revealed that plasmonic CD responses were in the region from 520 to 750 nm, which was in agreement with the theoretical simulation. Importantly, the CD band could be regulated by controlling the gaps between adjacent NCs and altering the building blocks of the assemblies. These results show that the plasmonic chiroptical response of NP-NR heterodimers could come from the finger-crossed chiral construction of adjacent NC in the heterodimers and the formation of plasmonic hot-spots in the assemblies could further enhance the plasmonic CD. This work provides a new opportunity to create heterogeneous nanoscale plasmonic objects with tailorable chiroptical response for application in biosensors, in vivo chiral medical carriers and negative refractive index materials.
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Affiliation(s)
- Changlong Hao
- State Key Lab of Food Science & Technology, School of Food Science & Technology, Jiangnan University, Wuxi, 214122, China
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