1
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Oyarce E, Cantero-López P, Roa K, Boulett A, Yáñez O, Santander P, Del C Pizarro G, Sánchez J. Removal of highly concentrated methylene blue dye by cellulose nanofiber biocomposites. Int J Biol Macromol 2023; 238:124045. [PMID: 36934817 DOI: 10.1016/j.ijbiomac.2023.124045] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 02/16/2023] [Accepted: 03/11/2023] [Indexed: 03/19/2023]
Abstract
The contamination of water by dyes in high concentrations is a worldwide concern, and it has prompted the development of efficient, economical, and environmentally friendly materials and technologies for water purification. The hydration and adsorption capacity for methylene blue (MB) in biocomposites (BCs) based on cellulose nanofiber (CNF) (0 to 2 wt%) were studied. BCs were synthesized through a simple and straightforward route and characterized by spectroscopy, microscopic techniques and thermogravimetric analysis, among others. Hydration studies showed that BCs prepared with 2 wt% of CNF can absorb large volumes of water, approximately 2274 % in the case of poly 2-acrylamide-2-methyl-1-propanesulfonic acid (PAMPS)-CNF and 2408 % in poly sodium 4-styrene sulfonate (PSSNa)-CNF. These BCs showed outstanding adsorption capacity for highly concentrated MB solutions (4536 mg g-1 PAMPS-CNF and 11,930 mg g-1 PSSNa-CNF). It was confirmed that the adsorption mechanism is through electrostatic interactions. Finally, BCs showed high MB adsorption efficiency after several sorption-desorption cycles and on a simulated textile effluent. Furthermore, the theoretical results showed a preferential interaction between MB and the semiflexible polymer chains at the lowest energy setting. The development and study of a new adsorbent material with high MB removal performance that is easy to prepare, economical and reusable for potential use in water purification treatments was successfully achieved.
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Affiliation(s)
- Estefanía Oyarce
- Universidad de Santiago de Chile (USACH), Facultad de Química y Biología, Departamento de Ciencias del Ambiente, Santiago, Chile
| | - Plinio Cantero-López
- Universidad Andres Bello, Facultad de Ciencias Exactas, Departamento de Ciencias, Químicas, Viña del Mar, Chile; Center of Applied Nanoscience (CANS), Facultad de Ciencias Exactas, Universidad Andres Bello, Santiago, Chile; Relativistic Molecular Physics Group (ReMoPh), PhD program in Molecular Physical Chemistry, Facultad de Ciencias Exactas, Universidad Andres Bello, Santiago, Chile
| | - Karina Roa
- Universidad de Santiago de Chile (USACH), Facultad de Química y Biología, Departamento de Ciencias del Ambiente, Santiago, Chile
| | - Andrés Boulett
- Universidad de Santiago de Chile (USACH), Facultad de Química y Biología, Departamento de Ciencias del Ambiente, Santiago, Chile
| | - Osvaldo Yáñez
- Facultad de Ingeniería y Negocios, Universidad de las Américas, Santiago, Chile; Center of New Drugs for Hypertension (CENDHY), Santiago, Chile
| | - Paola Santander
- Universidad de Santiago de Chile (USACH), Facultad de Química y Biología, Departamento de Ciencias del Ambiente, Santiago, Chile
| | - Guadalupe Del C Pizarro
- Departamento de Química, Universidad Tecnológica Metropolitana, J. P. Alessandri 1242, Santiago, Chile
| | - Julio Sánchez
- Universidad de Santiago de Chile (USACH), Facultad de Química y Biología, Departamento de Ciencias del Ambiente, Santiago, Chile.
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2
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Detection and quantification of carrageenan in jelly candies using lectin histochemistry and photometric titration. Eur Food Res Technol 2022. [DOI: 10.1007/s00217-022-04112-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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3
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Concentration Dependent Single Chain Properties of Poly(sodium 4-styrenesulfonate) Subjected to Aromatic Interactions with Chlorpheniramine Maleate Studied by Diafiltration and Synchrotron-SAXS. Polymers (Basel) 2021; 13:polym13203563. [PMID: 34685324 PMCID: PMC8538281 DOI: 10.3390/polym13203563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 09/26/2021] [Accepted: 10/01/2021] [Indexed: 11/17/2022] Open
Abstract
The polyelectrolyte poly(sodium 4-styrenesulfonate) undergoes aromatic–aromatic interaction with the drug chlorpheniramine, which acts as an aromatic counterion. In this work, we show that an increase in the concentration in the dilute and semidilute regimes of a complex polyelectrolyte/drug 2:1 produces the increasing confinement of the drug in hydrophobic domains, with implications in single chain thermodynamic behavior. Diafiltration analysis at polymer concentrations between 0.5 and 2.5 mM show an increase in the fraction of the aromatic counterion irreversibly bound to the polyelectrolyte, as well as a decrease in the electrostatic reversible interaction forces with the remaining fraction of drug molecules as the total concentration of the system increases. Synchrotron-SAXS results performed in the semidilute regimes show a fractal chain conformation pattern with a fractal dimension of 1.7, similar to uncharged polymers. Interestingly, static and fractal correlation lengths increase with increasing complex concentration, due to the increase in the amount of the confined drug. Nanoprecipitates are found in the range of 30–40 mM, and macroprecipitates are found at a higher system concentration. A model of molecular complexation between the two species is proposed as the total concentration increases, which involves ion pair formation and aggregation, producing increasingly confined aromatic counterions in hydrophobic domains, as well as a decreasing number of charged polymer segments at the hydrophobic/hydrophilic interphase. All of these features are of pivotal importance to the general knowledge of polyelectrolytes, with implications both in fundamental knowledge and potential technological applications considering aromatic-aromatic binding between aromatic polyelectrolytes and aromatic counterions, such as in the production of pharmaceutical formulations.
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4
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Talbot D, Queiros Campos J, Checa-Fernandez BL, Marins J, Lomenech C, Hurel C, Godeau GD, Raboisson-Michel M, Verger-Dubois G, Obeid L, Kuzhir P, Bee A. Adsorption of Organic Dyes on Magnetic Iron Oxide Nanoparticles. Part I: Mechanisms and Adsorption-Induced Nanoparticle Agglomeration. ACS OMEGA 2021; 6:19086-19098. [PMID: 34337247 PMCID: PMC8320151 DOI: 10.1021/acsomega.1c02401] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Accepted: 07/05/2021] [Indexed: 06/01/2023]
Abstract
This series of two papers is devoted to the effect of organic dye (methylene blue, MB; or methyl orange, MO) adsorption on the surface of either bare or citrate-coated magnetic iron oxide nanoparticles (IONPs) on their primary agglomeration (in the absence of an applied magnetic field) and secondary field-induced agglomeration. The present paper (Part I) is focused on physicochemical mechanisms of dye adsorption and adsorption-induced primary agglomeration of IONPs. Dye adsorption to oppositely charged IONPs is found to be mostly promoted by electrostatic interactions and is very sensitive to pH and ionic strength variations. The shape of adsorption isotherms is correctly reproduced by the Langmuir law. For the particular MB/citrated IONP pair, the maximum surface density of adsorbed MB seems to correspond to the packing density of an adsorbed monolayer rather than to the surface density of the available adsorption sites. MB is shown to form H-aggregates on the surface of citrate-coated IONPs. The effective electric charge on the IONP surface remains nearly constant in a broad range of surface coverages by MB due to the combined action of counterion exchange and counterion condensation. Primary agglomeration of IONPs (revealed by an exponential increase of hydrodynamic size with surface coverage by MB) probably comes from correlation attractions or π-stacking aromatic interactions between adsorbed MB molecules or H-aggregates. From the application perspective, the maximum adsorption capacity is 139 ± 4 mg/g for the MB/citrated IONP pair (pH = 4-11) and 257 ± 16 mg/g for the MO/bare IONP pair (pH ∼ 4). Citrated IONPs have shown a good potential for their reusability in water treatment, with the adsorption efficiency remaining about 99% after nine adsorption/desorption cycles.
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Affiliation(s)
- Delphine Talbot
- Sorbonne
Université, CNRS, UMR 8234, PHENIX, 4 place Jussieu, 75252 Paris Cedex 5, France
| | - Jordy Queiros Campos
- Université
Côte d’Azur, CNRS UMR 7010 Institute of Physics of Nice
(INPHYNI), Parc Valrose, 06108 Nice, France
| | - Blanca L. Checa-Fernandez
- Department
of Applied Physics, University of Granada, Avenida de la Fuente Nueva, 18071 Granada, Spain
- CEIT-Basque
Research and Technology Alliance (BRTA) and Tecnun, University of Navarra, 20018 Donostia/San Sebastián, Spain
| | - Jéssica
A. Marins
- Université
Côte d’Azur, CNRS UMR 7010 Institute of Physics of Nice
(INPHYNI), Parc Valrose, 06108 Nice, France
| | - Claire Lomenech
- Université
Côte d’Azur, CNRS UMR 7010 Institute of Physics of Nice
(INPHYNI), Parc Valrose, 06108 Nice, France
| | - Charlotte Hurel
- Université
Côte d’Azur, CNRS UMR 7010 Institute of Physics of Nice
(INPHYNI), Parc Valrose, 06108 Nice, France
| | - Guilhem D. Godeau
- Université
Côte d’Azur, CNRS UMR 7010 Institute of Physics of Nice
(INPHYNI), Parc Valrose, 06108 Nice, France
| | - Maxime Raboisson-Michel
- Université
Côte d’Azur, CNRS UMR 7010 Institute of Physics of Nice
(INPHYNI), Parc Valrose, 06108 Nice, France
- Axlepios
Biomedical, 1ere Avenue
5eme rue, 06510 Carros, France
| | | | - Layaly Obeid
- Sorbonne
Université, CNRS, UMR 8234, PHENIX, 4 place Jussieu, 75252 Paris Cedex 5, France
| | - Pavel Kuzhir
- Université
Côte d’Azur, CNRS UMR 7010 Institute of Physics of Nice
(INPHYNI), Parc Valrose, 06108 Nice, France
| | - Agnès Bee
- Sorbonne
Université, CNRS, UMR 8234, PHENIX, 4 place Jussieu, 75252 Paris Cedex 5, France
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5
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Flores ME, Ancalaf D, Rolleri A, Nishide H, Lisoni JG, Moreno‐Villoslada I. Porous polyelectrolyte materials with controlled luminescence properties based on aromatic‐aromatic interactions with rhodamine B. POLYM ADVAN TECHNOL 2021. [DOI: 10.1002/pat.5308] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Mario E. Flores
- Instituto de Ciencias Químicas, Facultad de Ciencias Universidad Austral de Chile Valdivia Chile
| | - Daniel Ancalaf
- Instituto de Ciencias Químicas, Facultad de Ciencias Universidad Austral de Chile Valdivia Chile
| | - Aldo Rolleri
- Instituto de Bosques y Sociedad, Facultad de Ciencias Forestales Universidad Austral de Chile Valdivia Chile
| | - Hiroyuki Nishide
- Department of Applied Chemistry School of Science and Engineering, Waseda University Tokyo Japan
| | - Judit G. Lisoni
- NM MultiMat, Instituto de Ciencias Físicas y Matemáticas, Facultad de Ciencias Universidad Austral de Chile Valdivia Chile
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6
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Luo W, Wu C, Huang S, Luo X, Yuan R, Yang X. Liquid Phase Interfacial Surface-Enhanced Raman Scattering Platform for Ratiometric Detection of MicroRNA 155. Anal Chem 2020; 92:15573-15578. [PMID: 33166461 DOI: 10.1021/acs.analchem.0c03633] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The self-assembly of gold nanoparticles (Au NPs) on a liquid phase interface is often employed as a surface-enhanced Raman scattering (SERS) platform with advantages of simple preparation, high reproducibility, and a defect-free character, but they are limited to only detect a target with Raman signals. To overcome this problem, microRNA 155 without a Raman signal can be detected by a liquid phase interfacial ratiometric SERS platform. Compared with the typical solid phase SERS platform, we propose a distinctive strategy not only owning the advantages of the liquid phase interfacial platform but also breaking the limitation of recent liquid-liquid interfacial SERS analysis. This platform presents a fabulous sensitivity with a limit of detection (LOD) of 1.10 aM for microRNA 155. By simply altering the duplex-specific nuclease (DSN) enzyme amplification, our strategy can realize detection of a variety of microRNAs, paving the way to practical applications of a liquid phase SERS platform.
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Affiliation(s)
- Wei Luo
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Caijun Wu
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Siqi Huang
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Xiliang Luo
- Shandong Key Laboratory of Biochemical Analysis; College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, PR China
| | - Ruo Yuan
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Xia Yang
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
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7
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Fuenzalida Werner JP, Huang Y, Mishra K, Janowski R, Vetschera P, Heichler C, Chmyrov A, Neufert C, Niessing D, Ntziachristos V, Stiel AC. Challenging a Preconception: Optoacoustic Spectrum Differs from the Optical Absorption Spectrum of Proteins and Dyes for Molecular Imaging. Anal Chem 2020; 92:10717-10724. [PMID: 32640156 DOI: 10.1021/acs.analchem.0c01902] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Optoacoustic (photoacoustic) imaging has seen marked advances in detection and data analysis, but there is less progress in understanding the photophysics of common optoacoustic contrast agents. This gap blocks the development of novel agents and the accurate analysis and interpretation of multispectral optoacoustic images. To close it, we developed a multimodal laser spectrometer (MLS) to enable the simultaneous measurement of optoacoustic, absorbance, and fluorescence spectra. Herein, we employ MLS to analyze contrast agents (methylene blue, rhodamine 800, Alexa Fluor 750, IRDye 800CW, and indocyanine green) and proteins (sfGFP, mCherry, mKate, HcRed, iRFP720, and smURFP). We found that the optical absorption spectrum does not correlate with the optoacoustic spectrum for the majority of the analytes. We determined that for dyes, the transition underlying an aggregation state has more optoacoustic signal generation efficiency than the monomer transition. For proteins we found a favored optoacoustic relaxation that stems from the neutral or zwitterionic chromophores and unreported photoswitching behavior of tdTomato and HcRed. We then crystalized HcRed in its photoswitch optoacoustic state, confirming structurally the change in isomerization with respect to HcReds' fluorescence state. Finally, on the example of the widely used label tdTomato and the dye indocyanine green, we show the importance of correct photophysical (e.g., spectral and kinetic) information as a prerequisite for spectral-unmixing for in vivo imaging.
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Affiliation(s)
| | - Yuanhui Huang
- Institute of Biological and Medical Imaging (IBMI), Helmholtz Zentrum München, D-85764 Neuherberg, Germany.,Chair of Biological Imaging, Technische Universitat München, D-81675 Munich, Germany
| | - Kanuj Mishra
- Institute of Biological and Medical Imaging (IBMI), Helmholtz Zentrum München, D-85764 Neuherberg, Germany.,Chair of Biological Imaging, Technische Universitat München, D-81675 Munich, Germany
| | - Robert Janowski
- Intracellular Transport and RNA Biology Group, Institute of Structural Biology, Helmholtz Zentrum München, D-85764 Neuherberg, Germany
| | - Paul Vetschera
- Institute of Biological and Medical Imaging (IBMI), Helmholtz Zentrum München, D-85764 Neuherberg, Germany.,Chair of Biological Imaging, Technische Universitat München, D-81675 Munich, Germany
| | - Christina Heichler
- First Department of Medicine, Universitaetsklinikum Erlangen, Friedrich-Alexander-Universitaet Erlangen-Nuernberg, D-89081 Erlangen, Germany
| | - Andriy Chmyrov
- Institute of Biological and Medical Imaging (IBMI), Helmholtz Zentrum München, D-85764 Neuherberg, Germany.,Chair of Biological Imaging, Technische Universitat München, D-81675 Munich, Germany.,Center for Translational Cancer Research (TranslaTUM), Technische Universitat München, D-81675 Munich, Germany
| | - Clemens Neufert
- First Department of Medicine, Universitaetsklinikum Erlangen, Friedrich-Alexander-Universitaet Erlangen-Nuernberg, D-89081 Erlangen, Germany
| | - Dierk Niessing
- Intracellular Transport and RNA Biology Group, Institute of Structural Biology, Helmholtz Zentrum München, D-85764 Neuherberg, Germany.,Institute of Pharmaceutical Biotechnology, Ulm University, 89081 Ulm, Germany
| | - Vasilis Ntziachristos
- Institute of Biological and Medical Imaging (IBMI), Helmholtz Zentrum München, D-85764 Neuherberg, Germany.,Chair of Biological Imaging, Technische Universitat München, D-81675 Munich, Germany.,Center for Translational Cancer Research (TranslaTUM), Technische Universitat München, D-81675 Munich, Germany
| | - Andre C Stiel
- Institute of Biological and Medical Imaging (IBMI), Helmholtz Zentrum München, D-85764 Neuherberg, Germany
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8
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Klučáková M. Agarose Hydrogels Enriched by Humic Acids as the Complexation Agent. Polymers (Basel) 2020; 12:polym12030687. [PMID: 32204449 PMCID: PMC7182926 DOI: 10.3390/polym12030687] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 03/16/2020] [Accepted: 03/17/2020] [Indexed: 01/27/2023] Open
Abstract
The transport properties of agarose hydrogels enriched by humic acids were studied. Methylene blue, rhodamine 6G and Cu(II) ions were incorporated into hydrogel as diffusion probes, and then their release into water was monitored. Cu(II) ions as well as both the dyes studied in this work have high affinity to humic substances and their interactions strongly affected their diffusion in hydrogels. It was confirmed that humic acids retarded the transport of diffusion probes. Humic acids' enrichment caused the decrease in the values of effective diffusion coefficients due to their complexation with diffusion probes. In general, the diffusion of dyes was more affected by the complexation with humic acids in comparison with Cu(II) ions. The effect of complexation was selective for the particular diffusion probe. The strongest effect was obtained for the diffusion of methylene blue. It was assumed that metal ions interacted preferentially with acidic functional groups. In contrast to Cu(II) ions, dyes can interact with acidic functional groups, and the condensed cyclic structures of the dye probes supported their interactions with the hydrophobic domains of humic substances.
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Affiliation(s)
- Martina Klučáková
- Faculty of Chemistry, Brno University of Technology, Purkyňova 118/464, 612 00 Brno, Czech Republic
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9
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Villamizar-Sarmiento MG, Molina-Soto EF, Guerrero J, Shibue T, Nishide H, Moreno-Villoslada I, Oyarzun-Ampuero FA. A New Methodology to Create Polymeric Nanocarriers Containing Hydrophilic Low Molecular-Weight Drugs: A Green Strategy Providing a Very High Drug Loading. Mol Pharm 2019; 16:2892-2901. [DOI: 10.1021/acs.molpharmaceut.9b00097] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- María Gabriela Villamizar-Sarmiento
- Department of Sciences and Pharmaceutical Technology, University of Chile, Santiago de Chile 8380494, Chile
- Instituto de Ciencias Químicas, Facultad de Ciencias, Universidad Austral de Chile, Casilla 567, Valdivia 5110033, Chile
- Advanced Center for Chronic Diseases (ACCDiS), Santiago 8380494, Chile
| | - Elton F. Molina-Soto
- Instituto de Ciencias Químicas, Facultad de Ciencias, Universidad Austral de Chile, Casilla 567, Valdivia 5110033, Chile
| | - Juan Guerrero
- Facultad de Química y Biología, Universidad de Santiago de Chile, Casilla 40 Santiago 9170124, Chile
| | - Toshimichi Shibue
- Materials Characterization Central Laboratory; School of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo 169-8555, Japan
| | - Hiroyuki Nishide
- Research Institute for Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 165-8555, Japan
| | - Ignacio Moreno-Villoslada
- Instituto de Ciencias Químicas, Facultad de Ciencias, Universidad Austral de Chile, Casilla 567, Valdivia 5110033, Chile
| | - Felipe A. Oyarzun-Ampuero
- Department of Sciences and Pharmaceutical Technology, University of Chile, Santiago de Chile 8380494, Chile
- Advanced Center for Chronic Diseases (ACCDiS), Santiago 8380494, Chile
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10
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Stîngă G, Băran A, Iovescu A, Aricov L, Anghel DF. Monitoring the confinement of methylene blue in pyrene labeled poly(acrylic acid). J Mol Liq 2019. [DOI: 10.1016/j.molliq.2018.10.023] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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11
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A simple and green methodology to assemble poly(4-vinylpyridine) and a sulfonated azo-dye for obtaining stable polymeric nanoparticles. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.09.062] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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12
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Araya-Hermosilla E, Catalán-Toledo J, Muñoz-Suescun F, Oyarzun-Ampuero F, Raffa P, Polgar LM, Picchioni F, Moreno-Villoslada I. Totally Organic Redox-Active pH-Sensitive Nanoparticles Stabilized by Amphiphilic Aromatic Polyketones. J Phys Chem B 2018; 122:1747-1755. [PMID: 29337559 DOI: 10.1021/acs.jpcb.7b11254] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Amphiphilic aromatic polymers have been synthesized by grafting aliphatic polyketones with 4-(aminomethyl)benzoic acid at different molar ratios via the Paal-Knorr reaction. The resulting polymers, showing diketone conversion degree of 16%, 37%, 53%, and 69%, have been complexed with the redox-active 2,3,5-triphenyl-2H-tetrazolium chloride, a precursor molecule with which aromatic-aromatic interactions are held. Upon addition of ascorbic acid to the complexes, in situ reduction of the tetrazolium salt produced 1,3,5-triphenylformazan nanoparticles stabilized by the amphiphilic polymers. The stabilized nanoparticles display highly negative zeta potential [-(35-70) mV] and hydrodynamic diameters in the submicron range (100-400 nm). Nonaromatic polyelectrolytes or hydrophilic aromatic copolymers showing low linear aromatic density and high linear charge density such as acrylate/maleate and sulfonate/maleate-containing polymers were unable to stabilize formazan nanoparticles synthesized by the same method. The copolymers studied here bear uncharged nonaromatic comonomers (unreacted diketone units) as well as charged aromatic comonomers, which furnish amphiphilia. Thus, the linear aromatic density and the maximum linear charge density have the same value for each copolymer, and the hydrophilic/hydrophobic balance varies with the diketone conversion degree. The amphiphilia of the copolymers allows the stabilization of the nanoparticles, even with the copolymers showing a low linear aromatic density. The method of nanoparticle synthesis constitutes a simple, cheap, and green method for the production of switchable totally organic, redox-active, pH-sensitive nanoparticles that can be reversibly turned into macroprecipitates upon pH changing.
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Affiliation(s)
- Esteban Araya-Hermosilla
- Department of Chemical Engineering-Product Technology, University of Groningen , Nijenborgh 4, NL-9747 AG Groningen, The Netherlands
| | - José Catalán-Toledo
- Instituto de Ciencias Químicas, Facultad de Ciencias, Universidad Austral de Chile , Casilla 567, 5090000 Valdivia, Chile
| | - Fabián Muñoz-Suescun
- Facultad de Ciencias de la Salud, Universidad Colegio Mayor de Cundinamarca , Bogotá DC, Colombia
| | - Felipe Oyarzun-Ampuero
- Department of Sciences and Pharmaceutical Technologies, Universidad de Chile , Santiago, Chile
| | - Patrizio Raffa
- Department of Chemical Engineering-Product Technology, University of Groningen , Nijenborgh 4, NL-9747 AG Groningen, The Netherlands
| | - Lorenzo Massimo Polgar
- Department of Chemical Engineering-Product Technology, University of Groningen , Nijenborgh 4, NL-9747 AG Groningen, The Netherlands
| | - Francesco Picchioni
- Department of Chemical Engineering-Product Technology, University of Groningen , Nijenborgh 4, NL-9747 AG Groningen, The Netherlands
| | - Ignacio Moreno-Villoslada
- Instituto de Ciencias Químicas, Facultad de Ciencias, Universidad Austral de Chile , Casilla 567, 5090000 Valdivia, Chile
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13
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Kutz A, Mariani G, Schweins R, Streb C, Gröhn F. Self-assembled polyoxometalate-dendrimer structures for selective photocatalysis. NANOSCALE 2018; 10:914-920. [PMID: 29177296 DOI: 10.1039/c7nr07097g] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We present a novel, self-assembled nanostructure with selective photocatalytic activity formed from anionic polyoxometalate clusters and cationic dendrimers by electrostatic self-assembly. The association of the components in aqueous solution is driven by ionic interaction and steric factors yielding stable aggregates of a defined size with a coil-like structure. The assemblies show high potential for the application in solar-energy conversion systems due to their enhanced and substrate specific photocatalytic activity.
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Affiliation(s)
- A Kutz
- Department of Chemistry and Pharmacy, Interdisciplinary Center for Molecular Materials (ICMM), Friedrich-Alexander Universität Erlangen-Nürnberg, Egerlandstr. 3, 91058 Erlangen, Germany.
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14
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Flores ME, Shibue T, Sugimura N, Nishide H, Moreno-Villoslada I. Aggregation Number in Water/n-Hexanol Molecular Clusters Formed in Cyclohexane at Different Water/n-Hexanol/Cyclohexane Compositions Calculated by Titration 1H NMR. J Phys Chem B 2017; 121:10285-10291. [DOI: 10.1021/acs.jpcb.7b08848] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Mario E. Flores
- Instituto
de Ciencias Químicas, Facultad de Ciencias, Universidad Austral de Chile, Valdivia 52017, Chile
| | | | | | | | - Ignacio Moreno-Villoslada
- Instituto
de Ciencias Químicas, Facultad de Ciencias, Universidad Austral de Chile, Valdivia 52017, Chile
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15
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Fabrication of semisynthetic collagenic materials for mere/synergistic adsorption: A model approach of determining dye allocation by systematic characterization and optimization. Int J Biol Macromol 2017; 102:438-456. [DOI: 10.1016/j.ijbiomac.2017.04.044] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2016] [Revised: 04/10/2017] [Accepted: 04/11/2017] [Indexed: 01/01/2023]
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16
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Díaz C, Catalán-Toledo J, Flores ME, Orellana SL, Pesenti H, Lisoni J, Moreno-Villoslada I. Dispersion of the Photosensitizer 5,10,15,20-Tetrakis(4-Sulfonatophenyl)-porphyrin by the Amphiphilic Polymer Poly(vinylpirrolidone) in Highly Porous Solid Materials Designed for Photodynamic Therapy. J Phys Chem B 2017; 121:7373-7381. [PMID: 28692270 DOI: 10.1021/acs.jpcb.7b04727] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The ability of the amphiphilic and biocompatible poly(vinylpyrrolidone) to avoid self-aggregation of the photosensitizer 5,10,15,20-tetrakis(4-sulfonatophenyl)porphyrin in aqueous solution in the presence of the biocompatible polycation chitosan, polymer that induces the dye self-aggregation, is shown. This is related to the tendency of the dye to undergo preferential solvation by the amphiphilic polymer. Importantly, the dispersant ability of this polymer is transferred to the solid state. Thus, aerogels made of the biocompatible polymers chitosan and chondroitin sulfate, and containing the photosensitizer dispersed by the amphiphilic polymer have been synthesized. Production of reactive oxygen species by the aerogel containing the amphiphilic polymer was faster than when the polymer was absent, correlating with the relative concentration of dyes dispersed as monomers. The aerogels presented here constitute low cost biocompatible materials bearing a conventional photosensitizer for photodynamic therapy, easy to produce, store, transport, and manage in clinical practice.
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Affiliation(s)
- Claudia Díaz
- Instituto de Ciencias Químicas, Facultad de Ciencias, Universidad Austral de Chile , Isla Teja, Casilla, 567 Valdivia, Chile
| | - José Catalán-Toledo
- Instituto de Ciencias Químicas, Facultad de Ciencias, Universidad Austral de Chile , Isla Teja, Casilla, 567 Valdivia, Chile
| | - Mario E Flores
- Instituto de Ciencias Químicas, Facultad de Ciencias, Universidad Austral de Chile , Isla Teja, Casilla, 567 Valdivia, Chile
| | - Sandra L Orellana
- Instituto de Ciencias Químicas, Facultad de Ciencias, Universidad Austral de Chile , Isla Teja, Casilla, 567 Valdivia, Chile
| | - Héctor Pesenti
- Escuela de Ingeniería de Procesos Industriales, Facultad de Ingeniería, Universidad Católica de Temuco , Temuco, Chile
| | - Judit Lisoni
- Instituto de Ciencias Física y Matemáticas, Universidad Austral de Chile , Región de los Ríos, 641 Valdivia, Chile
| | - Ignacio Moreno-Villoslada
- Instituto de Ciencias Químicas, Facultad de Ciencias, Universidad Austral de Chile , Isla Teja, Casilla, 567 Valdivia, Chile
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17
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Determination of carrageenan by means of photometric titration with Methylene Blue and Toluidine Blue dyes. Carbohydr Polym 2017; 165:1-6. [DOI: 10.1016/j.carbpol.2017.02.029] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Revised: 02/08/2017] [Accepted: 02/08/2017] [Indexed: 12/17/2022]
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18
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Flores ME, Martínez F, Olea AF, Shibue T, Sugimura N, Nishide H, Moreno-Villoslada I. Water-Induced Phase Transition in Cyclohexane/n-Hexanol/Triton X-100 Mixtures at a Molar Composition of 1/16/74 Studied by NMR. J Phys Chem B 2017; 121:876-882. [DOI: 10.1021/acs.jpcb.6b11752] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Mario E. Flores
- Departamento
de Ciencia de los Materiales, Facultad de Ciencias Físicas
y Matemáticas, Universidad de Chile, Avenida Tupper 2069, Santiago 8370451, Chile
- Instituto
de Ciencias Químicas, Facultad de Ciencias, Universidad Austral de Chile, Las Encinas 220, Valdivia 5090000, Chile
| | - Francisco Martínez
- Departamento
de Ciencia de los Materiales, Facultad de Ciencias Físicas
y Matemáticas, Universidad de Chile, Avenida Tupper 2069, Santiago 8370451, Chile
| | - Andrés F. Olea
- Instituto
de Ciencias Químicas Aplicadas, Facultad de Ingeniería, Universidad Autónoma de Chile, El Llano Subercaseaux 2801, Santiago 8320325, Chile
| | - Toshimichi Shibue
- Material
Characterization Central Laboratory, School of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo 169-8555, Japan
| | - Natsuhiko Sugimura
- Material
Characterization Central Laboratory, School of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo 169-8555, Japan
| | - Hiroyuki Nishide
- Department
of Applied Chemistry, School of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo 169-8555, Japan
| | - Ignacio Moreno-Villoslada
- Instituto
de Ciencias Químicas, Facultad de Ciencias, Universidad Austral de Chile, Las Encinas 220, Valdivia 5090000, Chile
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19
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Singha NR, Karmakar M, Mahapatra M, Mondal H, Dutta A, Roy C, Chattopadhyay PK. Systematic synthesis of pectin-g-(sodium acrylate-co-N-isopropylacrylamide) interpenetrating polymer network for superadsorption of dyes/M(ii): determination of physicochemical changes in loaded hydrogels. Polym Chem 2017. [DOI: 10.1039/c7py00316a] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Superadsorbent hydrogel with excellent physicochemical properties is used for mere/synergic chemisorption of dyes and M(ii).
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Affiliation(s)
- Nayan Ranjan Singha
- Department of Polymer Science and Technology
- Government College of Engineering and Leather Technology (Post-Graduate)
- Maulana Abul Kalam Azad University of Technology
- Kolkata – 700106
- India
| | - Mrinmoy Karmakar
- Department of Polymer Science and Technology
- Government College of Engineering and Leather Technology (Post-Graduate)
- Maulana Abul Kalam Azad University of Technology
- Kolkata – 700106
- India
| | - Manas Mahapatra
- Department of Polymer Science and Technology
- Government College of Engineering and Leather Technology (Post-Graduate)
- Maulana Abul Kalam Azad University of Technology
- Kolkata – 700106
- India
| | - Himarati Mondal
- Department of Polymer Science and Technology
- Government College of Engineering and Leather Technology (Post-Graduate)
- Maulana Abul Kalam Azad University of Technology
- Kolkata – 700106
- India
| | - Arnab Dutta
- Department of Polymer Science and Technology
- Government College of Engineering and Leather Technology (Post-Graduate)
- Maulana Abul Kalam Azad University of Technology
- Kolkata – 700106
- India
| | - Chandan Roy
- Department of Polymer Science and Technology
- Government College of Engineering and Leather Technology (Post-Graduate)
- Maulana Abul Kalam Azad University of Technology
- Kolkata – 700106
- India
| | - Pijush Kanti Chattopadhyay
- Department of Leather Technology
- Government College of Engineering and Leather Technology (Post-Graduate)
- Maulana Abul Kalam Azad University of Technology
- Kolkata – 700106
- India
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20
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Flores ME, Garcés-Jerez P, Fernández D, Aros-Perez G, González-Cabrera D, Álvarez E, Cañas I, Oyarzun-Ampuero F, Moreno-Villoslada I. Facile Formation of Redox-Active Totally Organic Nanoparticles in Water by In Situ Reduction of Organic Precursors Stabilized through Aromatic-Aromatic Interactions by Aromatic Polyelectrolytes. Macromol Rapid Commun 2016; 37:1729-1734. [PMID: 27616076 DOI: 10.1002/marc.201600339] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Revised: 07/12/2016] [Indexed: 01/24/2023]
Abstract
The formation of redox-active, totally organic nanoparticles in water is achieved following a strategy similar to that used to form metal nanoparticles. It is based on two fundamental concepts: i) complexation through aromatic-aromatic interactions of a water-soluble precursor aromatic molecule with polyelectrolytes bearing complementary charged aromatic rings, and ii) reduction of the precursor molecule to achieve stabilized nanoparticles. Thus, formazan nanoparticles are synthesized by reduction of a tetrazolium salt with ascorbic acid using polyelectrolytes bearing benzene sulfonate residues of high linear aromatic density, but cannot be formed in the presence of nonaromatic polyelectrolytes. The red colored nanoparticles are efficiently encapsulated in calcium alginate beads, showing macroscopic homogeneity. Bleaching kinetics with chlorine show linear rates on the order of tenths of milli-meters per minute. A linear behavior of the dependence of the rate of bleaching on the chlorine concentration is found, showing the potential of the nanoparticles for chlorine sensing.
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Affiliation(s)
- Mario E Flores
- Instituto de Ciencias Químicas, Facultad de Ciencias, Universidad Austral de Chile, Las Encinas 220, Valdivia, 5110033, Chile
| | - Pablo Garcés-Jerez
- Instituto de Ciencias Químicas, Facultad de Ciencias, Universidad Austral de Chile, Las Encinas 220, Valdivia, 5110033, Chile
| | - Daniel Fernández
- Instituto de Ciencias Químicas, Facultad de Ciencias, Universidad Austral de Chile, Las Encinas 220, Valdivia, 5110033, Chile
| | - Gustavo Aros-Perez
- Instituto de Ciencias Químicas, Facultad de Ciencias, Universidad Austral de Chile, Las Encinas 220, Valdivia, 5110033, Chile
| | - Diego González-Cabrera
- Instituto de Ciencias Químicas, Facultad de Ciencias, Universidad Austral de Chile, Las Encinas 220, Valdivia, 5110033, Chile
| | - Eduardo Álvarez
- Instituto de Ciencias Químicas, Facultad de Ciencias, Universidad Austral de Chile, Las Encinas 220, Valdivia, 5110033, Chile
| | - Ignacio Cañas
- Instituto de Ciencias Químicas, Facultad de Ciencias, Universidad Austral de Chile, Las Encinas 220, Valdivia, 5110033, Chile
| | - Felipe Oyarzun-Ampuero
- Departamento de Ciencias y Tecnología Farmaceútica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santos Dumont 964, Santiago, 8380494, Chile
| | - Ignacio Moreno-Villoslada
- Instituto de Ciencias Químicas, Facultad de Ciencias, Universidad Austral de Chile, Las Encinas 220, Valdivia, 5110033, Chile.
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21
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Hoffmann S, Fuenzalida Werner JP, Moreno-Villoslada I, Goycoolea FM. New insights into the nature of the Cibacron brilliant red 3B-A – Chitosan interaction. PURE APPL CHEM 2016. [DOI: 10.1515/pac-2016-0712] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
AbstractCibacron brilliant red 3B-A (CBR) has been introduced to determine chitosan (CS) concentrations in solution, and several studies applied it to measure chitosan content in pharmaceutical formulations. So far, studies have relied on the absorbance band shift to 570 nm to determine the extent of the CBR – CS interaction. In this study, we show that CBR forms micro- to nanometer sized aggregates with CS, depending on their charge ratio and that other photophysical changes in CBR are induced by this interaction. We found that, besides the bathochromic band shift, aggregation induces emission at 600 nm and emission quenching at 360 nm. We compared changes CS induced in absorbance and fluorescence emission of CBR with the CS monomer glucosamine and poly(allylamine) hydrochloride, which both contain amino groups, and found that similar but less intense photophysical changes also occur. Furthermore, CS-induced circular dichroism in CBR suggests a twisted, chiral structure of these aggregates that should match with the previously published in silico simulations of the structure of CS in solution. The low linear charge density of CS and its chiral conformation are considered responsible for the enhanced photophysical response of CBR interacting with the polycation.
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Affiliation(s)
- Stefan Hoffmann
- 1IBBP, Westfälische Wilhelms-Universität Münster, Schloßgarten 3, 48149 Münster, Germany
| | | | - Ignacio Moreno-Villoslada
- 2Instituto de Ciencias Químicas, Facultad de Ciencias, Universidad Austral de Chile, Casilla 567, Valdivia, Chile
| | - Francisco M. Goycoolea
- 1IBBP, Westfälische Wilhelms-Universität Münster, Schloßgarten 3, 48149 Münster, Germany
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22
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Sanhueza L, Castro J, Urzúa E, Barrientos L, Oyarzun-Ampuero F, Pesenti H, Shibue T, Sugimura N, Tomita W, Nishide H, Moreno-Villoslada I. Photochromic Solid Materials Based on Poly(decylviologen) Complexed with Alginate and Poly(sodium 4-styrenesulfonate). J Phys Chem B 2015; 119:13208-17. [DOI: 10.1021/acs.jpcb.5b05963] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | | | - Lorena Barrientos
- Departamento
de Química, Facultad de Ciencias Básicas, Universidad Metropolitana de Ciencias de la Educación, Avenida José Pedro Alessandri
774, Ñuñoa, Santiago, Chile
- Center
for the Development of Nanoscience and Nanotechnology, CEDENNA, Santiago, Chile
| | - Felipe Oyarzun-Ampuero
- Department
of Science and Pharmaceutical Technology, Universidad de Chile, Santiago, Chile
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23
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Araya-Hermosilla E, Orellana SL, Toncelli C, Picchioni F, Moreno-Villoslada I. Novel polyketones with pendant imidazolium groups as nanodispersants of hydrophobic antibiotics. J Appl Polym Sci 2015. [DOI: 10.1002/app.42363] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Esteban Araya-Hermosilla
- Instituto de Ciencias Químicas; Facultad de Ciencias; Universidad Austral de Chile; Casilla 567 Valdivia Chile
- Department of Chemical Engineering/Product technology; University of Groningen; Nijenborgh 4 9747AG Groningen The Netherlands
| | - Sandra L. Orellana
- Instituto de Ciencias Químicas; Facultad de Ciencias; Universidad Austral de Chile; Casilla 567 Valdivia Chile
| | - Claudio Toncelli
- Department of Chemical Engineering/Product technology; University of Groningen; Nijenborgh 4 9747AG Groningen The Netherlands
| | - Francesco Picchioni
- Department of Chemical Engineering/Product technology; University of Groningen; Nijenborgh 4 9747AG Groningen The Netherlands
| | - Ignacio Moreno-Villoslada
- Instituto de Ciencias Químicas; Facultad de Ciencias; Universidad Austral de Chile; Casilla 567 Valdivia Chile
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24
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Orellana SL, Torres-Gallegos C, Araya-Hermosilla R, Oyarzun-Ampuero F, Moreno-Villoslada I. Association Efficiency of Three Ionic Forms of Oxytetracycline to Cationic and Anionic Oil-In-Water Nanoemulsions Analyzed by Diafiltration. J Pharm Sci 2015; 104:1141-52. [DOI: 10.1002/jps.24255] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2014] [Revised: 10/07/2014] [Accepted: 10/13/2014] [Indexed: 11/11/2022]
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25
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Flores ME, Shibue T, Sugimura N, Nishide H, Martínez F, Olea AF, Moreno-Villoslada I. n-Hexanol association in cyclohexane studied by NMR and NIR spectroscopies. J Mol Liq 2014. [DOI: 10.1016/j.molliq.2014.09.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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26
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Fuenzalida JP, Flores ME, Móniz I, Feijoo M, Goycoolea F, Nishide H, Moreno-Villoslada I. Immobilization of hydrophilic low molecular-weight molecules in nanoparticles of chitosan/poly(sodium 4-styrenesulfonate) assisted by aromatic-aromatic interactions. J Phys Chem B 2014; 118:9782-91. [PMID: 25054833 DOI: 10.1021/jp5037553] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The immobilization of the hydrophilic low molecular-weight cationic molecules rhodamine 6G, methylene blue, and citidine in nanoparticles composed of two opposite charged polyelectrolytes, poly(sodium 4-styrenesulfonate) and chitosan, is studied, and the results correlated with their physicochemical properties. Nanoparticles containing both polyelectrolytes have been synthesized showing hydrodynamic diameters of around 200 nm and tunable zeta potential. It was found that the strength of binding of the cationic molecules to the polyanion bearing charged aromatic groups poly(sodium 4-styrenesulfonate) by means of short-range aromatic-aromatic interactions increases with their hydrophobicity and polarizability, as seen by (1)H NMR and UV-vis spectroscopies, and diafiltration. Consequently, association efficiencies of 45, 21, and 12% have been found for the three molecules, respectively, revealing the different ability of the molecules to be immobilized in the nanoparticles. These results provide a proof of concept on a new strategy of immobilization of hydrophilic low molecular-weight molecules based on aromatic-aromatic interactions between polyelectrolytes and their aromatic counterions.
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Affiliation(s)
- Juan Pablo Fuenzalida
- IBBP, Westfälische Wilhelms-Universität Münster , Schlossgarten 3, 48149 - Münster, Germany
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27
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Araya-Hermosilla E, Muñoz D, Orellana S, Yáñez A, Olea AF, Oyarzun-Ampuero F, Moreno-Villoslada I. Immobilization of rhodamine 6G in calcium alginate microcapsules based on aromatic–aromatic interactions with poly(sodium 4-styrenesulfonate). REACT FUNCT POLYM 2014. [DOI: 10.1016/j.reactfunctpolym.2014.03.017] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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28
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Araya-Hermosilla R, Araya-Hermosilla E, Torres-Gallegos C, Alarcón-Alarcón C, Moreno-Villoslada I. Sensing Cu2+ by controlling the aggregation properties of the fluorescent dye rhodamine 6G with the aid of polyelectrolytes bearing different linear aromatic density. REACT FUNCT POLYM 2013. [DOI: 10.1016/j.reactfunctpolym.2013.07.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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29
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Basílio N, Piñeiro Á, Da Silva JP, García-Río L. Cooperative Assembly of Discrete Stacked Aggregates Driven by Supramolecular Host–Guest Complexation. J Org Chem 2013; 78:9113-9. [DOI: 10.1021/jo401307c] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Nuno Basílio
- Departamento
de Química Física, Centro de Investigación en
Química Biológica y Materiales Moleculares (CIQUS), Universidad de Santiago de Compostela, 15782 Santiago
de Compostela, Spain
| | - Ángel Piñeiro
- Departamento
de Física Aplicada, Facultad de Física, Universidad de Santiago de Compostela, Campus Vida, 15782 Santiago de
Compostela, Spain
| | - José P. Da Silva
- Faculdade
de Ciências e Tecnologia, CIQA, Universidade do Algarve, Campus de Gambelas, 8005-139 Faro, Portugal
| | - Luis García-Río
- Departamento
de Química Física, Centro de Investigación en
Química Biológica y Materiales Moleculares (CIQUS), Universidad de Santiago de Compostela, 15782 Santiago
de Compostela, Spain
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30
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Moldenhauer D, Gröhn F. Nanoassemblies with light-responsive size and density from linear flexible polyelectrolytes. ACTA ACUST UNITED AC 2013. [DOI: 10.1002/polb.23276] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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31
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Pizarro GDC, Jeria-Orell M, Marambio OG, Olea AF, Valdés DT, Geckeler KE. Synthesis of functional poly(styrene)-block-(methyl methacrylate/methacrylic acid) by homogeneous reverse atom transfer radical polymerization: Spherical nanoparticles, thermal behavior, self-aggregation, and morphological properties. J Appl Polym Sci 2013. [DOI: 10.1002/app.38923] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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32
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Sontag EM, Lotz GP, Agrawal N, Tran A, Aron R, Yang G, Necula M, Lau A, Finkbeiner S, Glabe C, Marsh JL, Muchowski PJ, Thompson LM. Methylene blue modulates huntingtin aggregation intermediates and is protective in Huntington's disease models. J Neurosci 2012; 32:11109-19. [PMID: 22875942 PMCID: PMC3546821 DOI: 10.1523/jneurosci.0895-12.2012] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2012] [Revised: 06/08/2012] [Accepted: 06/22/2012] [Indexed: 12/20/2022] Open
Abstract
Huntington's disease (HD) is a devastating neurodegenerative disorder with no disease-modifying treatments available. The disease is caused by expansion of a CAG trinucleotide repeat and manifests with progressive motor abnormalities, psychiatric symptoms, and cognitive decline. Expression of an expanded polyglutamine repeat within the Huntingtin (Htt) protein impacts numerous cellular processes, including protein folding and clearance. A hallmark of the disease is the progressive formation of inclusions that represent the culmination of a complex aggregation process. Methylene blue (MB), has been shown to modulate aggregation of amyloidogenic disease proteins. We investigated whether MB could impact mutant Htt-mediated aggregation and neurotoxicity. MB inhibited recombinant protein aggregation in vitro, even when added to preformed oligomers and fibrils. MB also decreased oligomer number and size and decreased accumulation of insoluble mutant Htt in cells. In functional assays, MB increased survival of primary cortical neurons transduced with mutant Htt, reduced neurodegeneration and aggregation in a Drosophila melanogaster model of HD, and reduced disease phenotypes in R6/2 HD modeled mice. Furthermore, MB treatment also promoted an increase in levels of BDNF RNA and protein in vivo. Thus, MB, which is well tolerated and used in humans, has therapeutic potential for HD.
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Affiliation(s)
- Emily Mitchell Sontag
- Departments of Biological Chemistry
- Psychiatry and Human Behavior
- Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, California 92697
| | - Gregor P. Lotz
- Gladstone Institute of Neurological Disease, San Francisco, California 94158
- Departments of Neurology and
| | | | - Andrew Tran
- Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, California 92697
| | - Rebecca Aron
- Gladstone Institute of Neurological Disease, San Francisco, California 94158
- Departments of Neurology and
| | - Guocheng Yang
- Gladstone Institute of Neurological Disease, San Francisco, California 94158
- Departments of Neurology and
| | | | | | - Steven Finkbeiner
- Gladstone Institute of Neurological Disease, San Francisco, California 94158
- Departments of Neurology and
- Taube-Koret Center for Huntington's Disease Research, University of California, San Francisco, California 94158
- Medical Scientist Training Program and
- Neuroscience Program, University of California, San Francisco, California 94141, and
- Department of Physiology, University of California, San Francisco, California 94143
| | - Charles Glabe
- Molecular Biology and Biochemistry, and
- Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, California 92697
| | | | - Paul J. Muchowski
- Gladstone Institute of Neurological Disease, San Francisco, California 94158
- Departments of Neurology and
- Biochemistry and Biophysics and
- Taube-Koret Center for Huntington's Disease Research, University of California, San Francisco, California 94158
| | - Leslie M. Thompson
- Departments of Biological Chemistry
- Psychiatry and Human Behavior
- Neurobiology and Behavior and
- Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, California 92697
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33
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Spectroscopic investigations on the binding of Methylene Blue and Nile Blue to negatively charged gold nanorods. J Mol Struct 2012. [DOI: 10.1016/j.molstruc.2012.04.012] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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34
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Chien RH, Lai CT, Hong JL. Complexation of Tetraphenylthiophene-Derived Ammonium Chloride to Poly(sodium vinylsulfonate) Polyelectrolytes: Aggregation-Induced Emission Enhancement and Long-Range Interaction. MACROMOL CHEM PHYS 2012. [DOI: 10.1002/macp.201100634] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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35
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Willerich I, Gröhn F. Molecular structure encodes nanoscale assemblies: understanding driving forces in electrostatic self-assembly. J Am Chem Soc 2011; 133:20341-56. [PMID: 22050129 DOI: 10.1021/ja207565m] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Supramolecular nanoparticles represent a key field in recent research as their synthesis through self-assembly is straightforward and they often can respond to external triggers. A fundamental understanding of structure-directing factors is highly desirable for a targeted structure design. This contribution demonstrates a quantitative relation between the size of supramolecular self-assembled nanoparticles and the free energy of association. Nanoparticles are prepared by electrostatic self-assembly of cationic polyelectrolyte dendrimers as model macroions and oppositely charged di- and trivalent organic dye molecules relying on the combination of electrostatic and π-π-interactions. A systematic set of sulfonate-group carrying azo-dyes was synthesized. Light scattering and ζ-potential measurements on the resulting nanoparticles yield hydrodynamic radii between 20 nm < R(H) < 50 nm and positive ζ-potential values indicating a positive particle charge. Studies on dye self-aggregation and dendrimer-dye association by isothermal titration calorimetry (ITC) and UV-vis spectroscopy allow for the correlation of the thermodynamic parameters of dendrimer-dye association with the size of the particles, showing that at least a free energy gain of ΔG ≈ - 32 kJ mol(-1) is necessary to induce dendrimer interconnection. Structural features of the azo dyes causing these to favor or prevent nanoparticle formation have been identified. The dye-dye-interaction was found to be the key factor in particle size control. A simple model yields a quantitative relation between the free energy and the particle sizes, allowing for predicting the latter based on thermodynamic measurements. Hence, a set of different molecular "building bricks" can be defined where the choice of building block determines the resulting assembly size.
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Affiliation(s)
- Immanuel Willerich
- Department of Chemistry and Pharmacy and Interdisciplinary Center for Molecular Materials, Friedrich-Alexander-University Erlangen-Nürnberg, Egerlandstrasse 3, 91058 Erlangen, Germany
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Willerich I, Schindler T, Gröhn F. Effect of Polyelectrolyte Architecture and Size on Macroion–Dye Assemblies. J Phys Chem B 2011; 115:9710-9. [DOI: 10.1021/jp204368t] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Immanuel Willerich
- Department of Chemistry and Pharmacy and Interdisciplinary Center for Molecular Materials, Friedrich-Alexander University Erlangen-Nürnberg, Egerlandstrasse 3, 91058 Erlangen, Germany
| | - Torben Schindler
- Department of Chemistry and Pharmacy and Interdisciplinary Center for Molecular Materials, Friedrich-Alexander University Erlangen-Nürnberg, Egerlandstrasse 3, 91058 Erlangen, Germany
| | - Franziska Gröhn
- Department of Chemistry and Pharmacy and Interdisciplinary Center for Molecular Materials, Friedrich-Alexander University Erlangen-Nürnberg, Egerlandstrasse 3, 91058 Erlangen, Germany
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Willerich I, Gröhn F. Thermodynamics of Photoresponsive Polyelectrolyte–Dye Assemblies with Irradiation Wavelength Triggered Particle Size. Macromolecules 2011. [DOI: 10.1021/ma200538e] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Immanuel Willerich
- Department of Chemistry and Pharmacy and Interdisciplinary Center for Molecular Materials, Friedrich-Alexander-University Erlangen-Nürnberg, Egerlandstrasse 3, 91058 Erlangen, Germany
| | - Franziska Gröhn
- Department of Chemistry and Pharmacy and Interdisciplinary Center for Molecular Materials, Friedrich-Alexander-University Erlangen-Nürnberg, Egerlandstrasse 3, 91058 Erlangen, Germany
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Ruthard C, Maskos M, Kolb U, Gröhn F. Polystyrene sulfonate-porphyrin assemblies: influence of polyelectrolyte and porphyrin structure. J Phys Chem B 2011; 115:5716-29. [PMID: 21491935 DOI: 10.1021/jp1078357] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
In this study, electrostatic self-assembly of different polystyrene sulfonates and a set of tetravalent cationic porphyrins is investigated. It is shown that association of linear polystyrene sulfonates of different molar masses yields finite size nanoscale assemblies that are stable in aqueous solution. Aggregates are compared to the ones of cylindrical brushes, revealing that both form assemblies in the 100 nm range with the charge ratio (molar ratio of porphyrin charges to polyelectrolyte charges) being determining, while the morphology of the resulting network-like assemblies is different for both polyelectrolyte architectures. For the smallest 8k polystyrene sulfonate, in addition, stoichiometric conditions differ. The influence of the molecular porphyrin structure was investigated by comparing meso-tetrakis(4-(trimethyl-ammonium)phenyl)porphyrin (TAPP) with its Cu(II) and Zn(II) loaded analogues and meso-tetrakis(4-N-methylpyridinium)porphyrin (TMPyP), revealing differences in stacking tendency and geometry. Additionally, the TMPyP accumulates more in the inside of the brush than the other porphyrins, likely due to the different position of its charged groups. The supramolecular nanostructures formed were characterized by UV-vis spectroscopy, light scattering, atomic force microscopy, cryo transmission electron microscopy, and small-angle neutron scattering. Results may build a valuable basis for the use of polyelectrolyte-porphyrin assemblies in medicine, catalysis, or energy conversion.
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Affiliation(s)
- Christian Ruthard
- Max Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz, Germany
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Willerich I, Gröhn F. Photoswitchable nanoassemblies by electrostatic self-assembly. Angew Chem Int Ed Engl 2011; 49:8104-8. [PMID: 20799308 DOI: 10.1002/anie.201003271] [Citation(s) in RCA: 84] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Immanuel Willerich
- Department of Chemistry and Pharmacy, Interdisciplinary Center for Molecular Materials, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstrasse 3, 91058 Erlangen, Germany
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Ruthard C, Maskos M, Yildiz H, Gröhn F. Association of a Cylindrical Polyelectrolyte Brush with Tetravalent Counterions. Macromol Rapid Commun 2011; 32:523-7. [DOI: 10.1002/marc.201000622] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2010] [Revised: 11/01/2010] [Indexed: 11/10/2022]
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Moreno-Villoslada I, Fuenzalida JP, Tripailaf G, Araya-Hermosilla R, Pizarro GDC, Marambio OG, Nishide H. Comparative study of the self-aggregation of rhodamine 6G in the presence of poly(sodium 4-styrenesulfonate), poly(N-phenylmaleimide-co-acrylic acid), poly(styrene-alt-maleic acid), and poly(sodium acrylate). J Phys Chem B 2010; 114:11983-92. [PMID: 20806945 DOI: 10.1021/jp104340k] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The interaction between rhodamine 6G and different polyelectrolytes is analyzed. Structural aspects differentiate these polyelectrolytes, such as the presence of aromatic groups and the number and localization of their respective charges, which may be directly attached to the aromatic groups or to the polymeric main chain. In the case of poly(sodium acrylate), which does not bear aromatic groups, the polyelectrolyte induces cooperative self-stacking between the dyes which is highly sensitive to the ionic strength, due to the predominance of long-range electrostatic interactions between the polymer and the dye. In the case of poly(sodium 4-styrenesulfonate), whose charge is directly attached to the aromatic groups, a high dispersant ability of the dyes is found and the interaction is less dependent on the ionic strength, due to the predominance of short-range aromatic-aromatic interactions between the dye and the polymer. Among the two polyelectrolytes studied for which the polymeric charge is directly attached to the main chain, and separated from the aromatic group, poly(styrene-alt-maleic acid) shows a lower dependence of the interaction on the ionic strength than poly(N-phenylmaleimide-co-acrylic acid) at a comonomer composition of 1:2, due to a higher linear aromatic density and a lower linear charge density, indicating the importance of hydrophobic forces. Both copolymers exhibit a high ability to induce cooperative self-aggregation of the dye.
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Affiliation(s)
- Ignacio Moreno-Villoslada
- Instituto de Química, Facultad de Ciencias, Universidad Austral de Chile, Casilla 567, Valdivia, Chile.
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Willerich I, Li Y, Gröhn F. Influencing Particle Size and Stability of Ionic Dendrimer−Dye Assemblies. J Phys Chem B 2010; 114:15466-76. [DOI: 10.1021/jp107358q] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Immanuel Willerich
- Department of Chemistry and Pharmacy and Interdisciplinary Center for Molecular Materials, Friedrich-Alexander-University Erlangen-Nürnberg, Egerlandstrasse 3, 91058 Erlangen, Germany and Max Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz, Germany
| | - Yi Li
- Department of Chemistry and Pharmacy and Interdisciplinary Center for Molecular Materials, Friedrich-Alexander-University Erlangen-Nürnberg, Egerlandstrasse 3, 91058 Erlangen, Germany and Max Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz, Germany
| | - Franziska Gröhn
- Department of Chemistry and Pharmacy and Interdisciplinary Center for Molecular Materials, Friedrich-Alexander-University Erlangen-Nürnberg, Egerlandstrasse 3, 91058 Erlangen, Germany and Max Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz, Germany
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Willerich I, Gröhn F. Photoschaltbare Nanostrukturen durch elektrostatische Selbstorganisation. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201003271] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Moreno-Villoslada I, Flores ME, Marambio OG, Pizarro GDC, Nishide H. Polyaromatic-Anion Behavior of Different Polyelectrolytes Containing Benzenecarboxylate Units. J Phys Chem B 2010; 114:7753-9. [DOI: 10.1021/jp101684w] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Ignacio Moreno-Villoslada
- Instituto de Química, Facultad de Ciencias, Universidad Austral de Chile, Casilla 567, Valdivia, Chile; Departamento de Química, Universidad Tecnológica Metropolitana, Santiago de Chile, Chile; and Department of Applied Chemistry, School of Science and Engineering, Waseda University, Tokyo 169-8555, Japan
| | - Mario E. Flores
- Instituto de Química, Facultad de Ciencias, Universidad Austral de Chile, Casilla 567, Valdivia, Chile; Departamento de Química, Universidad Tecnológica Metropolitana, Santiago de Chile, Chile; and Department of Applied Chemistry, School of Science and Engineering, Waseda University, Tokyo 169-8555, Japan
| | - Oscar G. Marambio
- Instituto de Química, Facultad de Ciencias, Universidad Austral de Chile, Casilla 567, Valdivia, Chile; Departamento de Química, Universidad Tecnológica Metropolitana, Santiago de Chile, Chile; and Department of Applied Chemistry, School of Science and Engineering, Waseda University, Tokyo 169-8555, Japan
| | - Guadalupe del C. Pizarro
- Instituto de Química, Facultad de Ciencias, Universidad Austral de Chile, Casilla 567, Valdivia, Chile; Departamento de Química, Universidad Tecnológica Metropolitana, Santiago de Chile, Chile; and Department of Applied Chemistry, School of Science and Engineering, Waseda University, Tokyo 169-8555, Japan
| | - Hiroyuki Nishide
- Instituto de Química, Facultad de Ciencias, Universidad Austral de Chile, Casilla 567, Valdivia, Chile; Departamento de Química, Universidad Tecnológica Metropolitana, Santiago de Chile, Chile; and Department of Applied Chemistry, School of Science and Engineering, Waseda University, Tokyo 169-8555, Japan
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