1
|
Yi HL, Hua CC. Peculiar Aggregation Features in Poly(3-hexylthiophene)/Chlorobenzene Solutions. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b02619] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Han-Liou Yi
- Department of Chemical Engineering, National Chung Cheng University, Chiayi 62102, Taiwan
| | - Chi-Chung Hua
- Department of Chemical Engineering, National Chung Cheng University, Chiayi 62102, Taiwan
| |
Collapse
|
2
|
Grünewald TA, Lassenberger A, van
Oostrum PDJ, Rennhofer H, Zirbs R, Capone B, Vonderhaid I, Amenitsch H, Lichtenegger HC, Reimhult E. Core-Shell Structure of Monodisperse Poly(ethylene glycol)-Grafted Iron Oxide Nanoparticles Studied by Small-Angle X-ray Scattering. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2015; 27:4763-4771. [PMID: 26321792 PMCID: PMC4547501 DOI: 10.1021/acs.chemmater.5b01488] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2015] [Revised: 06/17/2015] [Indexed: 05/04/2023]
Abstract
The promising applications of core-shell nanoparticles in the biological and medical field have been well investigated in recent years. One remaining challenge is the characterization of the structure of the hydrated polymer shell. Here we use small-angle X-ray scattering (SAXS) to investigate iron oxide core-poly(ethylene glycol) brush shell nanoparticles with extremely high polymer grafting density. It is shown that the shell density profile can be described by a scaling model that takes into account the locally very high grafting density near the core. A good fit to a constant density region followed by a star-polymer-like, monotonously decaying density profile is shown, which could help explain the unique colloidal properties of such densely grafted core-shell nanoparticles. SAXS experiments probing the thermally induced dehydration of the shell and the response to dilution confirmed that the observed features are associated with the brush and not attributed to structure factors from particle aggregates. We thereby demonstrate that the structure of monodisperse core-shell nanoparticles with dense solvated shells can be well studied with SAXS and that different density models can be distinguished from each other.
Collapse
Affiliation(s)
- Tilman A. Grünewald
- Department of Material
Sciences and Process Engineering, University
of Natural Resources and Life Sciences, Vienna, Peter-Jordan-Straße 82, A-1190 Vienna, Austria
| | - Andrea Lassenberger
- Department of Nanobiotechnology, University of Natural Resources and Life Sciences, Vienna, Muthgasse 11, A-1190 Vienna, Austria
| | - Peter D. J. van
Oostrum
- Department of Nanobiotechnology, University of Natural Resources and Life Sciences, Vienna, Muthgasse 11, A-1190 Vienna, Austria
| | - Harald Rennhofer
- Department of Material
Sciences and Process Engineering, University
of Natural Resources and Life Sciences, Vienna, Peter-Jordan-Straße 82, A-1190 Vienna, Austria
| | - Ronald Zirbs
- Department of Nanobiotechnology, University of Natural Resources and Life Sciences, Vienna, Muthgasse 11, A-1190 Vienna, Austria
| | - Barbara Capone
- Faculty of Physics, University of Vienna, Boltzmanngasse 5, A-1090 Vienna, Austria
| | - Iris Vonderhaid
- Department of Nanobiotechnology, University of Natural Resources and Life Sciences, Vienna, Muthgasse 11, A-1190 Vienna, Austria
| | - Heinz Amenitsch
- Institute for Inorganic Chemistry, Graz University of Technology, Stremayrgasse 9/V, A-8010 Graz, Austria
| | - Helga C. Lichtenegger
- Department of Material
Sciences and Process Engineering, University
of Natural Resources and Life Sciences, Vienna, Peter-Jordan-Straße 82, A-1190 Vienna, Austria
- E-mail:
| | - Erik Reimhult
- Department of Nanobiotechnology, University of Natural Resources and Life Sciences, Vienna, Muthgasse 11, A-1190 Vienna, Austria
- E-mail:
| |
Collapse
|
3
|
Shtykova EV. Shape determination of polydisperse and polymorphic nanoobjects from small-angle X-ray scattering data (Computer simulation). ACTA ACUST UNITED AC 2015. [DOI: 10.1134/s1995078015030155] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
4
|
Malyutin AG, Cheng H, Sanchez-Felix OR, Carlson K, Stein BD, Konarev PV, Svergun DI, Dragnea B, Bronstein LM. Coat Protein-Dependent Behavior of Poly(ethylene glycol) Tails in Iron Oxide Core Virus-like Nanoparticles. ACS APPLIED MATERIALS & INTERFACES 2015; 7:12089-12098. [PMID: 25989427 DOI: 10.1021/acsami.5b02278] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Here we explore the formation of virus-like nanoparticles (VNPs) utilizing 22-24 nm iron oxide nanoparticles (NPs) as cores and proteins derived from viral capsids of brome mosaic virus (BMV) or hepatitis B virus (HBV) as shells. To accomplish that, hydrophobic FeO/Fe3O4 NPs prepared by thermal decomposition of iron oleate were coated with poly(maleic acid-alt-octadecene) modified with poly(ethylene glycol) (PEG) tails of different lengths and grafting densities. MRI studies show high r2/r1 relaxivity ratios of these NPs that are practically independent of the polymer coating type. The versatility and flexibility of the viral capsid protein are on display as they readily form shells that exceed their native size. The location of the long PEG tails upon shell formation was investigated by electron microscopy and small-angle X-ray scattering. PEG tails were located differently in the BMV and HBV VNPs, with the BMV VNPs preferentially entrapping the tails in the interior and the HBV VNPs allowing the tails to extend through the capsid, which highlights the differences between intersubunit interactions in these two icosahedral viruses. The robustness of the assembly reaction and the protruding PEG tails, potentially useful in modulating the immune response, make the systems introduced here a promising platform for biomedical applications.
Collapse
Affiliation(s)
- Andrey G Malyutin
- †Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Hu Cheng
- §Department of Psychological and Brain Sciences, Indiana University, 1101 East Tenth Street, Bloomington, Indiana 47403, United States
| | - Olivia R Sanchez-Felix
- †Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Kenneth Carlson
- †Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Barry D Stein
- ∥Department of Biology, Indiana University, 1001 East Third Street, Bloomington, Indiana 47405, United States
| | - Petr V Konarev
- ‡EMBL, Hamburg Outstation, Notkestraße 85, D-22603 Hamburg, Germany
| | - Dmitri I Svergun
- ‡EMBL, Hamburg Outstation, Notkestraße 85, D-22603 Hamburg, Germany
| | - Bogdan Dragnea
- †Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Lyudmila M Bronstein
- †Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
- #Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| |
Collapse
|
5
|
Peng E, Wang F, Xue JM. Nanostructured magnetic nanocomposites as MRI contrast agents. J Mater Chem B 2015; 3:2241-2276. [PMID: 32262055 DOI: 10.1039/c4tb02023e] [Citation(s) in RCA: 90] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Magnetic resonance imaging (MRI) has become an integral part of modern clinical imaging due to its non-invasiveness and versatility in providing tissue and organ images with high spatial resolution. With the current MRI advancement, MRI imaging probes with suitable biocompatibility, good colloidal stability, enhanced relaxometric properties and advanced functionalities are highly demanded. As such, MRI contrast agents (CAs) have been an extensive research and development area. In the recent years, different inorganic-based nanoprobes comprising inorganic magnetic nanoparticles (MNPs) with an organic functional coating have been engineered to obtain a suitable contrast enhancement effect. For biomedical applications, the organic functional coating is critical to improve colloidal stability and biocompatibility. Simultaneously, it also provides a building block for generating a higher dimensional secondary structure. In this review, the combinatorial design approach by a self-assembling pre-formed hydrophobic inorganic MNPs core (from non-polar thermolysis synthesis) into various functional organic coatings (e.g. ligands, amphiphilic polymers and graphene oxide) to form water soluble nanocomposites will be discussed. The resultant magnetic ensembles were classified based on their dimensionality, namely, 0-D, 1-D, 2-D and 3-D structures. This classification provides further insight into their subsequent potential use as MRI CAs. Special attention will be dedicated towards the correlation between the spatial distribution and the associated MRI applications, which include (i) coating optimization-induced MR relaxivity enhancement, (ii) aggregation-induced MR relaxivity enhancement, (iii) off-resonance saturation imaging (ORS), (iv) magnetically-induced off-resonance imaging (ORI), (v) dual-modalities MR imaging and (vi) multifunctional nanoprobes.
Collapse
Affiliation(s)
- Erwin Peng
- Department of Materials Science and Engineering, Faculty of Engineering, National University of Singapore, 9 Engineering Drive 1, 117576, Singapore.
| | | | | |
Collapse
|
6
|
Menelaou M, Iatridi Z, Tsougos I, Vasiou K, Dendrinou-Samara C, Bokias G. Magnetic colloidal superparticles of Co, Mn and Ni ferrite featured with comb-type and/or linear amphiphilic polyelectrolytes; NMR and MRI relaxometry. Dalton Trans 2015; 44:10980-90. [DOI: 10.1039/c5dt00372e] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Hydrophobically-modified magnetic superparticles (MSPs) of MFe2O4 NPs were synthesized in the presence of amphiphilic polymers with different architectures and evaluated through NMR and MRI relaxivity measurements.
Collapse
Affiliation(s)
- Melita Menelaou
- Department of Chemistry
- Aristotle University of Thessaloniki
- GR-54124 Thessaloniki
- Greece
| | | | - Ioannis Tsougos
- Department of Medical Physics
- University Hospital of Larissa
- University of Thessaly
- GR-41110 Larisa
- Greece
| | - Katerina Vasiou
- Department of Radiology
- University Hospital of Larissa
- University of Thessaly
- GR-41110 Larisa
- Greece
| | | | - Georgios Bokias
- Department of Chemistry
- University of Patras
- GR-26504 Patras
- Greece
| |
Collapse
|
7
|
Morgan DG, Boris BS, Kuchkina NV, Yuzik-Klimova EY, Sorokina SA, Stein BD, Svergun DI, Spilotros A, Kostopoulou A, Lappas A, Shifrina ZB, Bronstein LM. Multicore iron oxide mesocrystals stabilized by a poly(phenylenepyridyl) dendron and dendrimer: role of the dendron/dendrimer self-assembly. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:8543-8550. [PMID: 24963746 DOI: 10.1021/la502409r] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We report the formation of multicore iron oxide mesocrystals using the thermal decomposition of iron acetyl acetonate in the presence of the multifunctional and rigid poly(phenylenepyridyl) dendron and dendrimer. We thoroughly analyze the influence of capping molecules of two different architectures and demonstrate for the first time that dendron/dendrimer self-assembly leads to multicore morphologies. Single-crystalline ordering in multicore NPs leads to cooperative magnetic behavior: mesocrystals exhibit ambient blocking temperatures, allowing subtle control over magnetic properties using a minor temperature change.
Collapse
Affiliation(s)
- David Gene Morgan
- Department of Chemistry and ‡Department of Biology, Indiana University , Bloomington, Indiana 47405, United States
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
8
|
Moglianetti M, Ong QK, Reguera J, Harkness KM, Mameli M, Radulescu A, Kohlbrecher J, Jud C, Svergun DI, Stellacci F. Scanning tunneling microscopy and small angle neutron scattering study of mixed monolayer protected gold nanoparticles in organic solvents. Chem Sci 2014. [DOI: 10.1039/c3sc52595c] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
|
9
|
Blanchet CE, Svergun DI. Small-Angle X-Ray Scattering on Biological Macromolecules and Nanocomposites in Solution. Annu Rev Phys Chem 2013; 64:37-54. [DOI: 10.1146/annurev-physchem-040412-110132] [Citation(s) in RCA: 152] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Clement E. Blanchet
- European Molecular Biology Laboratory (EMBL) Hamburg, 22603 Hamburg, Germany;
| | - Dmitri I. Svergun
- European Molecular Biology Laboratory (EMBL) Hamburg, 22603 Hamburg, Germany;
| |
Collapse
|
10
|
Petoukhov MV, Franke D, Shkumatov AV, Tria G, Kikhney AG, Gajda M, Gorba C, Mertens HDT, Konarev PV, Svergun DI. New developments in the ATSAS program package for small-angle scattering data analysis. J Appl Crystallogr 2012; 45:342-350. [PMID: 25484842 PMCID: PMC4233345 DOI: 10.1107/s0021889812007662] [Citation(s) in RCA: 1350] [Impact Index Per Article: 112.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2012] [Accepted: 02/20/2012] [Indexed: 11/26/2022] Open
Abstract
New developments in the program package ATSAS (version 2.4) for the processing and analysis of isotropic small-angle X-ray and neutron scattering data are described. They include (i) multiplatform data manipulation and display tools, (ii) programs for automated data processing and calculation of overall parameters, (iii) improved usage of high- and low-resolution models from other structural methods, (iv) new algorithms to build three-dimensional models from weakly interacting oligomeric systems and complexes, and (v) enhanced tools to analyse data from mixtures and flexible systems. The new ATSAS release includes installers for current major platforms (Windows, Linux and Mac OSX) and provides improved indexed user documentation. The web-related developments, including a user discussion forum and a widened online access to run ATSAS programs, are also presented.
Collapse
Affiliation(s)
- Maxim V. Petoukhov
- European Molecular Biology Laboratory, Hamburg Unit, EMBL c/o DESY, Notkestrasse 85, Hamburg 22607, Germany
| | - Daniel Franke
- European Molecular Biology Laboratory, Hamburg Unit, EMBL c/o DESY, Notkestrasse 85, Hamburg 22607, Germany
| | - Alexander V. Shkumatov
- European Molecular Biology Laboratory, Hamburg Unit, EMBL c/o DESY, Notkestrasse 85, Hamburg 22607, Germany
| | - Giancarlo Tria
- European Molecular Biology Laboratory, Hamburg Unit, EMBL c/o DESY, Notkestrasse 85, Hamburg 22607, Germany
| | - Alexey G. Kikhney
- European Molecular Biology Laboratory, Hamburg Unit, EMBL c/o DESY, Notkestrasse 85, Hamburg 22607, Germany
| | - Michal Gajda
- European Molecular Biology Laboratory, Hamburg Unit, EMBL c/o DESY, Notkestrasse 85, Hamburg 22607, Germany
| | - Christian Gorba
- European Molecular Biology Laboratory, Hamburg Unit, EMBL c/o DESY, Notkestrasse 85, Hamburg 22607, Germany
| | - Haydyn D. T. Mertens
- European Molecular Biology Laboratory, Hamburg Unit, EMBL c/o DESY, Notkestrasse 85, Hamburg 22607, Germany
| | - Petr V. Konarev
- European Molecular Biology Laboratory, Hamburg Unit, EMBL c/o DESY, Notkestrasse 85, Hamburg 22607, Germany
| | - Dmitri I. Svergun
- European Molecular Biology Laboratory, Hamburg Unit, EMBL c/o DESY, Notkestrasse 85, Hamburg 22607, Germany
| |
Collapse
|
11
|
Budgin AM, Kabachii YA, Shifrina ZB, Valetsky PM, Kochev SS, Stein BD, Malyutin A, Bronstein LM. Functionalization of magnetic nanoparticles with amphiphilic block copolymers: self-assembled thermoresponsive submicrometer particles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:4142-4151. [PMID: 22303838 DOI: 10.1021/la205056k] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
For the first time the four block copolymers derived from 1-alkyl[2-(acryloyloxy)ethyl]dimethylammonium bromides with hexyl (ADA) or cetyl (ADHA) groups and 2-hydroxyethylacrylate (HEA) or N-isopropylacrylamide (NIPAM) were synthesized and employed for functionalization of monodisperse iron oxide nanoparticles (NPs). The polyADA (pADA) or polyADHA (pADHA) block consists of long hydrophobic tails (C(6) or C(16)) connected to a positively charged quaternary ammonium group, making this block amphiphilic. The second block was either fully hydrophilic (pHEA) or thermoresponsive (pNIPAM). The dependence of the NP coating on the length of the hydrophobic tail in the amphiphilic block, the composition of the hydrophilic block, and the NP sizes have been studied. Unusual self-assembling of iron oxide NPs into well-defined composite submicrometer particles was observed for pADHA-b-pNIPAM in the wide range of concentrations (at the pADHA repeating unit concentrations of 0.065 × 10(-2)-2.91 × 10(-2) mmol/mL per 1 mg/mL NPs) but only two concentrations, 1.62 × 10(-2) and 1.94 × 10(-2) mmol/mL, led to regular spherical particles. The thermoresponsive behavior of these composite particles was tested using ζ-potential and dynamic light scattering measurements, while the morphology of particles was characterized by transmission electron microscopy. Coating of NPs with pADHA-b-pHEA results in the formation of individually coated NPs. The different composite particle morphologies are explained by different properties of pHEA and pNIPAM. It is demonstrated that the composite particles based on pADHA-b-pNIPAM are responsive to a magnetic field and can be recommended as magnetic stoppers in biorelated membrane separations. The incorporation of Pd species in submicrometer particles makes them promising candidates for catalytic applications as magnetically recoverable catalysts with a high magnetic response.
Collapse
Affiliation(s)
- Angela M Budgin
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United States
| | | | | | | | | | | | | | | |
Collapse
|
12
|
Geidel C, Schmachtel S, Riedinger A, Pfeiffer C, Müllen K, Klapper M, Parak WJ. A general synthetic approach for obtaining cationic and anionic inorganic nanoparticles via encapsulation in amphiphilic copolymers. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2011; 7:2929-2934. [PMID: 21990195 DOI: 10.1002/smll.201100509] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2011] [Revised: 04/24/2011] [Indexed: 05/31/2023]
Abstract
A series of amphiphilic copolymers with variable charge densities on their backbone is synthesized. Positively charged N,N,N-trimethylammonium-2-ethyl methacrylate iodide or negatively charged 2-(methacryloyloxy)ethylphosphonic acid and lauryl methacrylate are used as building blocks. When wrapped around hydrophobically capped inorganic nanoparticles (NPs), the latter are able to disperse in aqueous solutions. Using this method, positively as well as negatively charged colloidal NPs can be synthesized in a reliable way. The method presented herein allows the charge on the NPs to be adjusted to different negative and positive values by using polymers with a variable ratio of charged monomers and lauryl methacrylate. Virtually all kinds of hydrophobic inorganic NPs could be coated with these amphiphilic polymers. The coating procedure is demonstrated for Au particles as well as for CdSe/ZnS quantum dots. To date, wrapping amphiphilic polymers around NPs has led only to anionic NPs. The polymers synthesized in this work allow for positively charged NPs with a high colloidal stability.
Collapse
Affiliation(s)
- C Geidel
- Max Planck Institute for Polymer Research, Mainz, Germany
| | | | | | | | | | | | | |
Collapse
|
13
|
Svergun DI, Shtykova EV, Volkov VV, Feigin LA. Small-angle X-ray scattering, synchrotron radiation, and the structure of bio- and nanosystems. CRYSTALLOGR REP+ 2011. [DOI: 10.1134/s1063774511050221] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
14
|
Bronstein LM, Shifrina ZB. Dendrimers as encapsulating, stabilizing, or directing agents for inorganic nanoparticles. Chem Rev 2011; 111:5301-44. [PMID: 21718045 DOI: 10.1021/cr2000724] [Citation(s) in RCA: 250] [Impact Index Per Article: 19.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
|