1
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Chattopadhyay S, Lipok M, Pfaffenberger ZJ, Olesiak-Bańska J, Biteen JS. Single-Particle Photoluminescence Measures a Heterogeneous Distribution of Differential Circular Absorbance of Gold Nanoparticle Aggregates near Constricted Thioflavin T Molecules. J Phys Chem Lett 2024; 15:1618-1622. [PMID: 38306468 DOI: 10.1021/acs.jpclett.3c03450] [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: 02/04/2024]
Abstract
The chirality of biomacromolecules is critical for their function, but the optical signal of this chirality is small in the visible range. Plasmonic nanoparticles are antennas that can couple to this chiral signal. Here, we examine the molecular-scale mechanism behind the induced circular dichroism of gold nanorods (AuNRs) in solution with insulin fibrils and the fibril-intercalating dye thioflavin T (ThT) with polarization-resolved single-molecule fluorescence and single-particle photoluminescence (PL) imaging. We compared the PL upon excitation by left- and right-handed circularly polarized light to calculate the differential absorbance of AuNRs near insulin fibrils with and without ThT. Overall, our results indicate that AuNRs do not act as chiral absorbers near constricted ThT molecules. Instead, we hypothesize that fibrils promote AuNR aggregation, and this templating is mediated by subtle changes in the solution conditions; under the right conditions, only a few chiral aggregates with significantly higher circular dichroism signal contribute to a large net circular dichroism.
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Affiliation(s)
- Saaj Chattopadhyay
- Applied Physics Program, University of Michigan, Ann Arbor, Michigan 48104, United States
| | - Maciej Lipok
- Institute of Advanced Materials, Wroclaw University of Science and Technology, 50-37044 Wroclaw, Poland
| | | | - Joanna Olesiak-Bańska
- Institute of Advanced Materials, Wroclaw University of Science and Technology, 50-37044 Wroclaw, Poland
| | - Julie S Biteen
- Applied Physics Program, University of Michigan, Ann Arbor, Michigan 48104, United States
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48104, United States
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2
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MCD and Induced CD of a Tetraphenoxyperylene-Based Dye in Chiral Solvents: An Experimental and Computational Study. Symmetry (Basel) 2022. [DOI: 10.3390/sym14061108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
The magnetic circular dichroism (MCD) spectrum of N,N′-bis(2,6-diisopropylphenyl)-1,6,7,12-tetraphenoxyperylene-3,4:9,10-tetracarboxydiimide, also known as Lumogen Red 300 or ROT-300, has been recorded both in achiral and chiral solvents. The induced CD spectra in chiral solvents have, similarly, been recorded. A discussion of the spectroscopic response, both in CD and in MCD experiments, is presented in this paper. Both types of spectra have been predicted most satisfactorily by DFT calculations; the CD spectra were obtained by assuming the prevalence of one “enantiomeric” conformer and the same set of conformers could also be used for MCD, since “enantiomeric” structures present identically in MCD spectra.
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3
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Li M, Liu M, Sha Y. Induced and Inversed Circularly Polarized Luminescence of Achiral Thioflavin T Assembled on Peptide Fibril. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2106130. [PMID: 34881501 DOI: 10.1002/smll.202106130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2021] [Revised: 11/09/2021] [Indexed: 06/13/2023]
Abstract
Chiroptical inversion of amyloid fibrils is a novel phenomenon and is of fundamental importance; however, the underlying structural basis remains poorly understood. Here, the co-assembly of Thioflavin T (ThT) with T1 amyloid fibril and the induced supramolecular chirality is investigated by induced circular dichroism (ICD) and circularly polarized luminescence (CPL), followed by direct morphological helicity observation of the fibril by an atomic force microscope (AFM). ThT exhibits negative ICD and CPL when assembled on the left-handed T1 fibril. Interestingly, when ThT dynamically interacts with the T1 fibril, the left-handed fibril partially converts into right-handed, accompanied with the inversion of CD and CPL signals. These results indicate that the morphological helicity of template fibril cannot be arbitrarily distinguished by the sign of chiroptical spectra of the dye/peptide assemblies.
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Affiliation(s)
- Meijun Li
- Department of Biochemistry and Biophysics, School of Basic Medical Sciences, Peking University, Beijing, 100191, China
| | - Minghua Liu
- Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, China
| | - Yinlin Sha
- Department of Biochemistry and Biophysics, School of Basic Medical Sciences, Peking University, Beijing, 100191, China
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4
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Shen Y, Wang Y, Hamley IW, Qi W, Su R, He Z. Chiral self-assembly of peptides: Toward the design of supramolecular polymers with enhanced chemical and biological functions. Prog Polym Sci 2021. [DOI: 10.1016/j.progpolymsci.2021.101469] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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5
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Li Q, Zhang J, Wang Y, Zhang G, Qi W, You S, Su R, He Z. Self-Assembly of Peptide Hierarchical Helical Arrays with Sequence-Encoded Circularly Polarized Luminescence. NANO LETTERS 2021; 21:6406-6415. [PMID: 34014681 DOI: 10.1021/acs.nanolett.1c00697] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Self-assembled peptide materials with sequence-encoded properties have attracted great interest. Despite their intrinsic chirality, the generation of circularly polarized luminescence (CPL) based on the self-assembly of simple peptides has been rarely reported. Here, we report the self-assembly of peptides into hierarchical helical arrays (HHAs) with controlled supramolecular handedness. The HHAs can emit full-color CPL signals after the incorporation of various achiral fluorescent molecules, and the glum value is 40 times higher than that of the CPL signal from the solutions. By simply changing the amino acid sequence of the peptides, CPL signals with opposite handedness can be generated within the HHAs. The peptide HHAs can provide hydrophobic pockets to accommodate the fluorescent molecules with helical arrangement through strong aromatic stacking interactions, which are responsible for the CPL signals. This work provides a pathway to construct highly ordered chiral materials, which have broad applications in the chiroptical field.
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Affiliation(s)
- Qing Li
- School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, P.R. China
| | - Jiaxing Zhang
- School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, P.R. China
| | - Yuefei Wang
- School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, P.R. China
- Tianjin Key Laboratory of Membrane Science and Desalination Technology, Tianjin University, Tianjin 300072, P.R. China
| | - Gong Zhang
- School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, P.R. China
| | - Wei Qi
- School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, P.R. China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, P.R. China
- Tianjin Key Laboratory of Membrane Science and Desalination Technology, Tianjin University, Tianjin 300072, P.R. China
| | - Shengping You
- School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, P.R. China
- Tianjin Key Laboratory of Membrane Science and Desalination Technology, Tianjin University, Tianjin 300072, P.R. China
| | - Rongxin Su
- School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, P.R. China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, P.R. China
- Tianjin Key Laboratory of Membrane Science and Desalination Technology, Tianjin University, Tianjin 300072, P.R. China
| | - Zhimin He
- School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, P.R. China
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6
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Wang X, Zhi W, Ma C, Zhu Z, Qi W, Huang J, Yan Y. Not by Serendipity: Rationally Designed Reversible Temperature-Responsive Circularly Polarized Luminescence Inversion by Coupling Two Scenarios of Harata-Kodaka's Rule. JACS AU 2021; 1:156-163. [PMID: 34467281 PMCID: PMC8395654 DOI: 10.1021/jacsau.0c00061] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Indexed: 05/13/2023]
Abstract
Intelligent control over the handedness of circularly polarized luminescence (CPL) is of special significance in smart optoelectronics, information storage, and data encryption; however, it still remains a great challenge to rationally design a CPL material that displays reversible handedness inversion without changing the system composition. Herein, we show this comes true by coupling the two scenarios of Harata-Kodaka's rule on the same supramolecular platform of crystalline microtubes self-assembled from surfactant-cyclodextrin host-guest complexes. Upon coassembling a linear dye with its electronic transition dipole moment outside of the cavity of β-CyD, the chirality transfer from the induced chirality of SDS in the SDS@2β-CyD microtubes to the dye generates left-handed CPL at room temperature. Upon elevating temperature, the dye forms inclusion complex with β-CyD, so that right-handed CPL is induced because the polar group of the dye is outside of the cavity of β-CyD. This process is completely reversible. We envision that host-guest chemistry would be very promising in creating smart CPL inversion materials for a vast number of applications.
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7
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Rimac H, Tandarić T, Vianello R, Bojić M. Indomethacin Increases Quercetin Affinity for Human Serum Albumin: A Combined Experimental and Computational Study and Its Broader Implications. Int J Mol Sci 2020; 21:ijms21165740. [PMID: 32785199 PMCID: PMC7460863 DOI: 10.3390/ijms21165740] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 08/06/2020] [Accepted: 08/08/2020] [Indexed: 12/17/2022] Open
Abstract
Human serum albumin (HSA) is the most abundant carrier protein in the human body. Competition for the same binding site between different ligands can lead to an increased active concentration or a faster elimination of one or both ligands. Indomethacin and quercetin both bind to the binding site located in the IIA subdomain. To determine the nature of the HSA-indomethacin-quercetin interactions, spectrofluorometric, docking, molecular dynamics studies, and quantum chemical calculations were performed. The results show that the indomethacin and quercetin binding sites do not overlap. Moreover, the presence of quercetin does not influence the binding constant and position of indomethacin in the pocket. However, binding of quercetin is much more favorable in the presence of indomethacin, with its position and interactions with HSA significantly changed. These results provide a new insight into drug-drug interactions, which can be important in situations when displacement from HSA or other proteins is undesirable or even desirable. This principle could also be used to deliberately prolong or shorten the xenobiotics' half-life in the body, depending on the desired outcomes.
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Affiliation(s)
- Hrvoje Rimac
- Department of Medicinal Chemistry, University of Zagreb Faculty of Pharmacy and Biochemistry, 10000 Zagreb, Croatia;
- Laboratory of Computational Modelling of Drugs, South Ural State University, 454008 Chelyabinsk, Russia
- Correspondence:
| | - Tana Tandarić
- Division of Organic Chemistry and Biochemistry, Ruđer Bošković Institute, 10000 Zagreb, Croatia; (T.T.); (R.V.)
| | - Robert Vianello
- Division of Organic Chemistry and Biochemistry, Ruđer Bošković Institute, 10000 Zagreb, Croatia; (T.T.); (R.V.)
| | - Mirza Bojić
- Department of Medicinal Chemistry, University of Zagreb Faculty of Pharmacy and Biochemistry, 10000 Zagreb, Croatia;
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8
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Stsiapura VI. Solvent effect on excited state potential energy surfaces of Thioflavin T. Qualitatively different results by TDDFT and SA-2-CASSCF methods. J Comput Chem 2020; 41:1874-1884. [PMID: 32516484 DOI: 10.1002/jcc.26358] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Accepted: 05/22/2020] [Indexed: 11/12/2022]
Abstract
Thioflavin T (ThT) is a viscosity-sensitive fluorescent dye and its emission intensity undergoes a significant enhancement upon binding to DNA or amyloid fibrils. This fluorescence light-up feature has been attributed earlier to restriction of structural rearrangements in the excited state that are coupled to an intramolecular charge transfer (ICT) reaction. In this work TDDFT (using B3LYP and CAM-B3LYP functionals) and SA-2-CASSCF calculations were carried out to obtain relaxed excited-state potential energy surfaces (PES) along twisting φ and wagging δ angles that describe mutual orientation of benzothiazole (BTZ) and dimethylaniline (DMA) fragments in ThT. For isolated ThT molecule both methods predict that during structural rearrangements of the initially excited Franck-Condon state, besides twisting along CC bond which connects BTZ and DMA fragments, a considerable wagging motion is expected to occur. Account for solvent effect using polarized continuum model showed qualitative differences in the excited state PES features calculated by SA-2-CASSCF and TDDFT methods. Single-reference TDDFT calculations failed to describe solvation of TICT state and predicted increase of its energy in more polar media.
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9
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Pretorius E, Page MJ, Hendricks L, Nkosi NB, Benson SR, Kell DB. Both lipopolysaccharide and lipoteichoic acids potently induce anomalous fibrin amyloid formation: assessment with novel Amytracker™ stains. J R Soc Interface 2019; 15:rsif.2017.0941. [PMID: 29445039 PMCID: PMC5832738 DOI: 10.1098/rsif.2017.0941] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Accepted: 01/24/2018] [Indexed: 12/11/2022] Open
Abstract
In recent work, we discovered that the presence of highly substoichiometric amounts (10−8 molar ratio) of lipopolysaccharide (LPS) from Gram-negative bacteria caused fibrinogen clotting to lead to the formation of an amyloid form of fibrin. We here show that the broadly equivalent lipoteichoic acids (LTAs) from two species of Gram-positive bacteria have similarly (if not more) potent effects. Using thioflavin T fluorescence to detect amyloid as before, the addition of low concentrations of free ferric ion is found to have similar effects. Luminescent conjugated oligothiophene dyes (LCOs), marketed under the trade name Amytracker™, also stain classical amyloid structures. We here show that they too give very large fluorescence enhancements when clotting is initiated in the presence of the four amyloidogens (LPS, ferric ions and two LTA types). The staining patterns differ significantly as a function of both the amyloidogens and the dyes used to assess them, indicating clearly that the nature of the clots formed is different. This is also the case when clotting is measured viscometrically using thromboelastography. Overall, the data provide further evidence for an important role of bacterial cell wall products in the various coagulopathies that are observable in chronic, inflammatory diseases. The assays may have potential in both diagnostics and therapeutics.
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Affiliation(s)
- Etheresia Pretorius
- Department of Physiological Sciences, Stellenbosch University, Stellenbosch Private Bag X1, Matieland 7602, South Africa
| | - Martin J Page
- Department of Physiological Sciences, Stellenbosch University, Stellenbosch Private Bag X1, Matieland 7602, South Africa
| | - Lisa Hendricks
- Department of Physiological Sciences, Stellenbosch University, Stellenbosch Private Bag X1, Matieland 7602, South Africa
| | - Nondumiso B Nkosi
- Department of Physiological Sciences, Stellenbosch University, Stellenbosch Private Bag X1, Matieland 7602, South Africa
| | - Sven R Benson
- Department of Physiological Sciences, Stellenbosch University, Stellenbosch Private Bag X1, Matieland 7602, South Africa
| | - Douglas B Kell
- Department of Physiological Sciences, Stellenbosch University, Stellenbosch Private Bag X1, Matieland 7602, South Africa .,School of Chemistry, The University of Manchester, 131 Princess Street, Manchester, Lancs M1 7DN, UK.,The Manchester Institute of Biotechnology, The University of Manchester, 131 Princess Street, Manchester, Lancs M1 7DN, UK.,Centre for Synthetic Biology of Fine and Speciality Chemicals, The University of Manchester, 131 Princess Street, Manchester, Lancs M1 7DN, UK
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10
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Krupová M, Kapitán J, Bouř P. Induced Lanthanide Circularly Polarized Luminescence as a Probe of Protein Fibrils. ACS OMEGA 2019; 4:1265-1271. [PMID: 31459399 PMCID: PMC6648570 DOI: 10.1021/acsomega.8b03175] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Accepted: 12/27/2018] [Indexed: 06/10/2023]
Abstract
Protein fibrils are involved in a number of biological processes. Because their structure is very complex and not completely understood, different spectroscopic methods are used to monitor different aspects of fibril structure. We have explored circularly polarized luminescence (CPL) induced in lanthanide compounds to indicate fibril growth and discriminate among fibril types. For hen egg-white lysozyme and polyglutamic acid-specific CPL, spectral patterns were obtained and could be correlated with vibrational circular dichroism (VCD) spectra and thioflavin T fluorescence. The CPL spectra were measured on a Raman optical activity spectrometer, and its various polarization modes are discussed. The experiments indicate that the induced CPL is sensitive to more local aspects of the fibril structure than VCD. For CPL, smaller amounts of the sample are required for the analysis, and thus this method appears to be a good candidate for future spectroscopic characterization of these peptide and protein aggregates.
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Affiliation(s)
- Monika Krupová
- Institute
of Organic Chemistry and Biochemistry, Academy of Sciences, Flemingovo náměstí
2, 16610 Prague, Czech Republic
- Faculty
of Mathematics and Physics, Charles University, Ke Karlovu 3, 12116 Prague 2, Czech Republic
| | - Josef Kapitán
- Department
of Optics, Palacký University, 17. listopadu 12, 77146 Olomouc, Czech Republic
| | - Petr Bouř
- Institute
of Organic Chemistry and Biochemistry, Academy of Sciences, Flemingovo náměstí
2, 16610 Prague, Czech Republic
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11
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Pretorius E, Bester J, Page MJ, Kell DB. The Potential of LPS-Binding Protein to Reverse Amyloid Formation in Plasma Fibrin of Individuals With Alzheimer-Type Dementia. Front Aging Neurosci 2018; 10:257. [PMID: 30186156 PMCID: PMC6113936 DOI: 10.3389/fnagi.2018.00257] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Accepted: 08/03/2018] [Indexed: 12/28/2022] Open
Abstract
Many studies indicate that there is a (mainly dormant) microbial component in the progressive development of Alzheimer-type dementias (ADs); and that in the case of Gram-negative organisms, a chief culprit might be the shedding of the highly inflammagenic lipopolysaccharide (LPS) from their cell walls. We have recently shown that a highly sensitive assay for the presence of free LPS [added to platelet poor plasma (PPP)] lies in its ability (in healthy individuals) to induce blood to clot into an amyloid form. This may be observed in a SEM or in a confocal microscope when suitable amyloid stains (such as thioflavin T) are added. This process could be inhibited by human lipopolysaccharide-binding protein (LBP). In the current paper, we show using scanning electron microscopy and confocal microscopy with amyloid markers, that PPP taken from individuals with AD exhibits considerable amyloid structure when clotting is initiated with thrombin but without added LPS. Furthermore, we could show that this amyloid structure may be reversed by the addition of very small amounts of LBP. This provides further evidence for a role of microbes and their inflammagenic cell wall products and that these products may be involved in pathological clotting in individuals with AD.
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Affiliation(s)
- Etheresia Pretorius
- Department of Physiological Sciences, Faculty of Science, Stellenbosch University, Stellenbosch, South Africa
| | - Janette Bester
- Department of Physiology, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
| | - Martin J Page
- Department of Physiological Sciences, Faculty of Science, Stellenbosch University, Stellenbosch, South Africa
| | - Douglas B Kell
- Department of Physiological Sciences, Faculty of Science, Stellenbosch University, Stellenbosch, South Africa.,School of Chemistry, The University of Manchester, Manchester, United Kingdom.,The Manchester Institute of Biotechnology, The University of Manchester, Manchester, United Kingdom
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12
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Tanaka H, Inoue Y, Mori T. Circularly Polarized Luminescence and Circular Dichroisms in Small Organic Molecules: Correlation between Excitation and Emission Dissymmetry Factors. CHEMPHOTOCHEM 2018. [DOI: 10.1002/cptc.201800015] [Citation(s) in RCA: 349] [Impact Index Per Article: 58.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Hiroki Tanaka
- Department of Applied Chemistry, Graduate School of Engineering; Osaka University; 2-1 Yamada-oka Suita 565-0871 Japan
| | - Yoshihisa Inoue
- Department of Applied Chemistry, Graduate School of Engineering; Osaka University; 2-1 Yamada-oka Suita 565-0871 Japan
| | - Tadashi Mori
- Department of Applied Chemistry, Graduate School of Engineering; Osaka University; 2-1 Yamada-oka Suita 565-0871 Japan
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13
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Carmo dos Santos NA, Badetti E, Licini G, Abbate S, Longhi G, Zonta C. A stereodynamic fluorescent probe for amino acids. Circular dichroism and circularly polarized luminescence analysis. Chirality 2017; 30:65-73. [DOI: 10.1002/chir.22780] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Revised: 09/28/2017] [Accepted: 10/02/2017] [Indexed: 01/09/2023]
Affiliation(s)
| | - Elena Badetti
- Dipartimento di Scienze Chimiche; Università degli Studi di Padova; Padova PD Italy
| | - Giulia Licini
- Dipartimento di Scienze Chimiche; Università degli Studi di Padova; Padova PD Italy
| | - Sergio Abbate
- Department of Molecular and Translational Medicine; Università di Brescia; Brescia BS Italy
| | - Giovanna Longhi
- Department of Molecular and Translational Medicine; Università di Brescia; Brescia BS Italy
| | - Cristiano Zonta
- Dipartimento di Scienze Chimiche; Università degli Studi di Padova; Padova PD Italy
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14
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Mukherjee P, Das A, Sen P. Ultrafast excited state deactivation channel of thioflavin T adsorbed on SDS micelle: A combined femtosecond fluorescence and transient absorption study. J Photochem Photobiol A Chem 2017. [DOI: 10.1016/j.jphotochem.2017.08.059] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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15
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Górecki M, Zinna F, Biver T, Di Bari L. Induced circularly polarized luminescence for revealing DNA binding with fluorescent dyes. J Pharm Biomed Anal 2017; 144:6-11. [DOI: 10.1016/j.jpba.2017.02.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Revised: 01/13/2017] [Accepted: 02/04/2017] [Indexed: 11/28/2022]
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16
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Jong K, Grisanti L, Hassanali A. Hydrogen Bond Networks and Hydrophobic Effects in the Amyloid β30–35 Chain in Water: A Molecular Dynamics Study. J Chem Inf Model 2017; 57:1548-1562. [DOI: 10.1021/acs.jcim.7b00085] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- KwangHyok Jong
- Condensed
Matter and Statistical Physics, International Centre for Theoretical Physics, Strada Costiera 11, Trieste 34151, Italy
- SISSA-Scuola Internazionale Superiore di Studi Avanzati, via Bonomea 265, Trieste 34136, Italy
- Department
of Physics, Kim II Sung University, RyongNam Dong, TaeSong District, Pyongyang, D.P.R., Korea
| | - Luca Grisanti
- Condensed
Matter and Statistical Physics, International Centre for Theoretical Physics, Strada Costiera 11, Trieste 34151, Italy
- SISSA-Scuola Internazionale Superiore di Studi Avanzati, via Bonomea 265, Trieste 34136, Italy
| | - Ali Hassanali
- Condensed
Matter and Statistical Physics, International Centre for Theoretical Physics, Strada Costiera 11, Trieste 34151, Italy
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17
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Goto T, Okazaki Y, Ueki M, Kuwahara Y, Takafuji M, Oda R, Ihara H. Induction of Strong and Tunable Circularly Polarized Luminescence of Nonchiral, Nonmetal, Low-Molecular-Weight Fluorophores Using Chiral Nanotemplates. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201612331] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Taisei Goto
- Department of Applied Chemistry and Biochemistry; Kumamoto University; 2-39-1 Kurokami, Chuo-ku Kumamoto 860-8555 Japan
| | - Yutaka Okazaki
- Department of Applied Chemistry and Biochemistry; Kumamoto University; 2-39-1 Kurokami, Chuo-ku Kumamoto 860-8555 Japan
| | - Masahiro Ueki
- Department of Applied Chemistry and Biochemistry; Kumamoto University; 2-39-1 Kurokami, Chuo-ku Kumamoto 860-8555 Japan
| | - Yutaka Kuwahara
- Department of Applied Chemistry and Biochemistry; Kumamoto University; 2-39-1 Kurokami, Chuo-ku Kumamoto 860-8555 Japan
| | - Makoto Takafuji
- Department of Applied Chemistry and Biochemistry; Kumamoto University; 2-39-1 Kurokami, Chuo-ku Kumamoto 860-8555 Japan
- Kumamoto Institute for Photo-Electro Organics (PHOENICS); 3-11-38 Higashimachi, Higashi-ku Kumamoto 862-0901 Japan
| | - Reiko Oda
- Institute of Chemistry and Biology of Membranes and Nanoobjects (UMR5248 CBMN); CNRS-Université de Bordeaux-Bordeaux INP; 2 rue Robert Escarpit 33607 P essac France
| | - Hirotaka Ihara
- Department of Applied Chemistry and Biochemistry; Kumamoto University; 2-39-1 Kurokami, Chuo-ku Kumamoto 860-8555 Japan
- Kumamoto Institute for Photo-Electro Organics (PHOENICS); 3-11-38 Higashimachi, Higashi-ku Kumamoto 862-0901 Japan
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18
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Goto T, Okazaki Y, Ueki M, Kuwahara Y, Takafuji M, Oda R, Ihara H. Induction of Strong and Tunable Circularly Polarized Luminescence of Nonchiral, Nonmetal, Low-Molecular-Weight Fluorophores Using Chiral Nanotemplates. Angew Chem Int Ed Engl 2017; 56:2989-2993. [PMID: 28146313 DOI: 10.1002/anie.201612331] [Citation(s) in RCA: 155] [Impact Index Per Article: 22.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Indexed: 01/01/2023]
Abstract
A new strategy is described for generating strong circularly polarized luminescence with highly tunable emission bands through chiral induction in nonchiral, totally organic, low-molecular-weight fluorescent dyes by chiral nanotemplate systems. Our approach allows the first systematic investigation to clarify the correlation between the circular dichroism and circularly polarized luminescence intensities. As a result, a dilute solution system with the highest circularly polarized luminescence intensity achieved to date and a dissymmetry factor of over 0.1 was identified.
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Affiliation(s)
- Taisei Goto
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto, 860-8555, Japan
| | - Yutaka Okazaki
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto, 860-8555, Japan
| | - Masahiro Ueki
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto, 860-8555, Japan
| | - Yutaka Kuwahara
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto, 860-8555, Japan
| | - Makoto Takafuji
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto, 860-8555, Japan.,Kumamoto Institute for Photo-Electro Organics (PHOENICS), 3-11-38 Higashimachi, Higashi-ku, Kumamoto, 862-0901, Japan
| | - Reiko Oda
- Institute of Chemistry and Biology of Membranes and Nanoobjects (UMR5248 CBMN), CNRS-Université de Bordeaux-Bordeaux INP, 2 rue Robert Escarpit, 33607 P, essac, France
| | - Hirotaka Ihara
- Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto, 860-8555, Japan.,Kumamoto Institute for Photo-Electro Organics (PHOENICS), 3-11-38 Higashimachi, Higashi-ku, Kumamoto, 862-0901, Japan
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Longhi G, Castiglioni E, Koshoubu J, Mazzeo G, Abbate S. Circularly Polarized Luminescence: A Review of Experimental and Theoretical Aspects. Chirality 2016; 28:696-707. [DOI: 10.1002/chir.22647] [Citation(s) in RCA: 263] [Impact Index Per Article: 32.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2016] [Revised: 08/26/2016] [Accepted: 08/26/2016] [Indexed: 12/23/2022]
Affiliation(s)
- Giovanna Longhi
- Department of Molecular and Translational Medicine; Università di Brescia; Brescia Italy
| | - Ettore Castiglioni
- Department of Molecular and Translational Medicine; Università di Brescia; Brescia Italy
- JASCO Europe; Cremella (LC) Italy
| | - Jun Koshoubu
- JASCO Corporation; Ishikawa-machi, Hachioji Tokyo Japan
| | - Giuseppe Mazzeo
- Department of Molecular and Translational Medicine; Università di Brescia; Brescia Italy
| | - Sergio Abbate
- Department of Molecular and Translational Medicine; Università di Brescia; Brescia Italy
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20
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Orsini S, Zinna F, Biver T, Di Bari L, Bonaduce I. Circularly polarized luminescence reveals interaction between commercial stains and protein matrices used in paintings. RSC Adv 2016. [DOI: 10.1039/c6ra14795j] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Here we show that circularly polarized luminescence (CPL) can give unique insight into interactions between fluorescent commercial stains and protein-based materials used in painting. CPL can complement information from ECD and fluorescence.
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Affiliation(s)
- Sibilla Orsini
- Dipartimento di Chimica e Chimica Industriale
- Università di Pisa
- I-56126 Pisa
- Italy
| | - Francesco Zinna
- Dipartimento di Chimica e Chimica Industriale
- Università di Pisa
- I-56126 Pisa
- Italy
| | - Tarita Biver
- Dipartimento di Chimica e Chimica Industriale
- Università di Pisa
- I-56126 Pisa
- Italy
| | - Lorenzo Di Bari
- Dipartimento di Chimica e Chimica Industriale
- Università di Pisa
- I-56126 Pisa
- Italy
| | - Ilaria Bonaduce
- Dipartimento di Chimica e Chimica Industriale
- Università di Pisa
- I-56126 Pisa
- Italy
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