1
|
Casas AM, Idris NS, Wen V, Patterson JP, Ge NH. Scattering Elimination in 2D IR Immune from Detector Artifacts. J Phys Chem B 2024; 128:8835-8845. [PMID: 39188212 PMCID: PMC11403676 DOI: 10.1021/acs.jpcb.4c04220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/28/2024]
Abstract
Highly scattering samples, such as polymer droplets or solid-state powders, are difficult to study via coherent two-dimensional infrared (2D IR) spectroscopy. Previously, researchers have employed (quasi-) phase cycling, local-oscillator chopping, and polarization control to reduce scattering, but the latter method poses a limit on polarization-dependent measurements. Here, we present a method for Scattering Elimination Immune from Detector Artifacts (SEIFDA) in pump-probe 2D IR experiments. Our method extends the negative probe delay method of removing scattering from pump-probe spectroscopy to 2D experiments. SEIFDA works well for all polarizations when combined with the optimized noise reduction scheme to remove additive and multiplicative noise. We demonstrate that our method can be employed with any polarization scheme and reliably lowers the scattering at parallel polarization to comparable levels to the conventional 8-frame phase cycling with probe chopping (8FPCPC) at perpendicular polarization. Our system can acquire artifact free spectra in parallel polarization when the signal intensity is as little as 5% of the intensity of the interference between the pump pulses scattered into the detector. It reduces the time required to characterize the scattering term by at least 50% over 8FPCPC. Through detailed analysis of detector nonlinearity, we show that the performance of 8FPCPC can be improved by incorporating nonlinear correction factors, but it is still worse than that of SEIFDA. Application of SEIFDA to study the encapsulation of Nile red in polymer droplets demonstrates that this method will be very useful for probing highly scattering systems.
Collapse
Affiliation(s)
- Anneka Miller Casas
- Department of Chemistry, University of California, Irvine, California 92697-2025, United States
| | - Nehal S Idris
- Department of Chemistry, University of California, Irvine, California 92697-2025, United States
| | - Victor Wen
- Department of Chemistry, University of California, Irvine, California 92697-2025, United States
| | - Joseph P Patterson
- Department of Chemistry, University of California, Irvine, California 92697-2025, United States
| | - Nien-Hui Ge
- Department of Chemistry, University of California, Irvine, California 92697-2025, United States
| |
Collapse
|
2
|
Aliabadi A, Hasannia M, Vakili-Azghandi M, Araste F, Abnous K, Taghdisi SM, Ramezani M, Alibolandi M. Synthesis approaches of amphiphilic copolymers for spherical micelle preparation: application in drug delivery. J Mater Chem B 2023; 11:9325-9368. [PMID: 37706425 DOI: 10.1039/d3tb01371e] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/15/2023]
Abstract
The formation of polymeric micelles in aqueous environments through the self-assembly of amphiphilic polymers can provide a versatile platform to increase the solubility and permeability of hydrophobic drugs and pave the way for their administration. In comparison to various self-assembly-based vehicles, polymeric micelles commonly have a smaller size, spherical morphology, and simpler scale up process. The use of polymer-based micelles for the encapsulation and carrying of therapeutics to the site of action triggered a line of research on the synthesis of various amphiphilic polymers in the past few decades. The extended knowledge on polymers includes biocompatible smart amphiphilic copolymers for the formation of micelles, therapeutics loading and response to external stimuli, micelles with a tunable drug release pattern, etc. Different strategies such as ring-opening polymerization, atom transfer radical polymerization, reversible addition-fragmentation chain-transfer, nitroxide mediated polymerization, and a combination of these methods were employed to synthesize copolymers with diverse compositions and topologies with the proficiency of self-assembly into well-defined micellar structures. The current review provides a summary of the important polymerization techniques and recent achievements in the field of drug delivery using micellar systems. This review proposes new visions for the design and synthesis of innovative potent amphiphilic polymers in order to benefit from their application in drug delivery fields.
Collapse
Affiliation(s)
- Ali Aliabadi
- Student Research Committee, Mashhad University of Medical Sciences, Mashhad, Iran
- Medicinal Chemistry Department, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Maliheh Hasannia
- Student Research Committee, Mashhad University of Medical Sciences, Mashhad, Iran
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran.
| | - Masoume Vakili-Azghandi
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran.
| | - Fatemeh Araste
- Department of Medical Biotechnology, School of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Khalil Abnous
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran.
| | - Seyed Mohammad Taghdisi
- Targeted Drug Delivery Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
- Pharmaceutical Biotechnology Department, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mohammad Ramezani
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran.
- Pharmaceutical Biotechnology Department, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mona Alibolandi
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran.
- Pharmaceutical Biotechnology Department, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| |
Collapse
|
3
|
Ianiro A, Berrocal JA, Tuinier R, Mayer M, Weder C. Computational design of anisotropic nanocomposite actuators. J Chem Phys 2023; 158:014901. [PMID: 36610969 DOI: 10.1063/5.0129105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
This paper presents a theoretical investigation of the design of a new actuator type made of anisotropic colloidal particles grafted with stimuli-responsive polymer chains. These artificial muscles combine the osmotic actuation principle of stimuli-responsive hydrogels with the structural alignment of colloidal liquid crystals to achieve directional motion. The solubility of the stimuli-responsive polymer in the neutral state, its degree of polymerization, the salt concentration, and the grafting density of the polymer chains on the surface of the colloidal particles are investigated and identified as important for actuator performance and tunability. The computational results suggest that the proposed mechanically active material matches or exceeds the performances of natural muscles and provide the guidelines for the realization of artificial muscles with predetermined actuation properties.
Collapse
Affiliation(s)
- Alessandro Ianiro
- Biophysics Group, Adolphe Merkle Institute, Chemin des Verdiers 4, 1700 Fribourg, Switzerland
| | - José Augusto Berrocal
- Polymer Chemistry and Materials Group, Adolphe Merkle Institute, Chemin des Verdiers 4, 1700 Fribourg, Switzerland
| | - Remco Tuinier
- Laboratory of Physical Chemistry, Department of Chemical Engineering and Chemistry and Institute for Complex Molecular Systems, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Michael Mayer
- Biophysics Group, Adolphe Merkle Institute, Chemin des Verdiers 4, 1700 Fribourg, Switzerland
| | - Christoph Weder
- Polymer Chemistry and Materials Group, Adolphe Merkle Institute, Chemin des Verdiers 4, 1700 Fribourg, Switzerland
| |
Collapse
|
4
|
Carro N, Mejía A. Prediction of Micellar Thermodynamics of Nonionic Surfactants Based on the Square Gradient Theory. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:14527-14539. [PMID: 36394511 DOI: 10.1021/acs.langmuir.2c00830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
A geometry-dependent contribution based on the square gradient theory of van der Waals is proposed as a predictive modification of the interfacial energy contribution for the micellar thermodynamic theory. The model has an analytic prediction for the spherical and cylindrical geometries. For ellipsoidal geometry, a simple yet physically meaningful approximation is proposed. The critical micelle concentration (CMC) and the surface tension isotherm under the new contribution are compared with the classical theory. The modified model describes qualitatively the available experimental data and the surface isotherm, showing an improvement in the predictions of the CMC.
Collapse
Affiliation(s)
- Nicolás Carro
- Departamento de Ingeniería Química, Universidad de Concepción, Concepción4030000, Chile
| | - Andrés Mejía
- Departamento de Ingeniería Química, Universidad de Concepción, Concepción4030000, Chile
| |
Collapse
|
5
|
Opdam J, Govers SPW, Melio J, van der Ven LGJ, de With G, Tuinier R, Esteves ACC. Distribution of block copolymers in drying polymer films. J Colloid Interface Sci 2022; 612:617-627. [PMID: 35016021 DOI: 10.1016/j.jcis.2021.12.130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 12/18/2021] [Accepted: 12/20/2021] [Indexed: 11/26/2022]
Abstract
HYPOTHESIS Block copolymers (BCP) consisting of a polar block and a surface active apolar block are widely used for surface functionalization of polymer films. The characteristics of the copolymer blocks determine whether surface segregation and/or phase separation occurs, for a given bulk mixture. This data can be used to find the optimal BCP composition where high surface enrichment is obtained without accumulation of phase separated BCP in the bulk. METHODS The distribution of poly(ethylene oxide)-polydimethylsiloxane (PEO-PDMS) BCP in a polymer formulation relevant for coating applications is systematically investigated. The surface segregation is studied in liquid formulations with surface tension measurements and dried films with X-ray photoelectron spectroscopy (XPS), whereas phase separation is quantified using turbidity measurements. The results are compared with Scheutjens-Fleer self-consistent field (SF-SCF) computations, which are also applied to determine the effect of film drying on BCP phase stability and surface segregation. FINDINGS Longer PDMS blocks result in lower interfacial tension of the liquid polymer mixture, whereas for the cured films, the largest PDMS concentration at the interface was obtained for intermediate PDMS block lengths. This is explained by the observation that phase separation already occurs at very low BCP concentrations for long PDMS blocks. The SCF predictions qualitatively agree with the experimental results and reveal that the BCP distribution changes significantly during film drying.
Collapse
Affiliation(s)
- Joeri Opdam
- Laboratory of Physical Chemistry, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, the Netherlands; Institute for Complex Molecular Systems (ICMS), Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, the Netherlands
| | - Stefan P W Govers
- Laboratory of Physical Chemistry, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, the Netherlands; Institute for Complex Molecular Systems (ICMS), Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, the Netherlands
| | - Julio Melio
- Laboratory of Physical Chemistry, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, the Netherlands; Huygens-Kamerlingh Onnes Laboratory, Leiden University, P.O. Box 9504, 2300 RA Leiden, the Netherlands
| | - Leendert G J van der Ven
- Laboratory of Physical Chemistry, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, the Netherlands
| | - Gijsbertus de With
- Laboratory of Physical Chemistry, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, the Netherlands
| | - Remco Tuinier
- Laboratory of Physical Chemistry, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, the Netherlands; Institute for Complex Molecular Systems (ICMS), Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, the Netherlands.
| | - A Catarina C Esteves
- Laboratory of Physical Chemistry, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, the Netherlands; Institute for Complex Molecular Systems (ICMS), Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, the Netherlands.
| |
Collapse
|
6
|
Klass SH, Gleason JM, Omole AO, Onoa B, Bustamante CJ, Francis MB. Preparation of Bioderived and Biodegradable Surfactants Based on an Intrinsically Disordered Protein Sequence. Biomacromolecules 2022; 23:1462-1470. [PMID: 35238203 DOI: 10.1021/acs.biomac.2c00051] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Surfactants, block copolymers, and other types of micellar systems are used in a wide variety of biomedical and industrial processes. However, most commonly used surfactants are synthetically derived and pose environmental and toxicological concerns throughout their product life cycle. Because of this, bioderived and biodegradable surfactants are promising alternatives. For biosurfactants to be implemented industrially, they need to be produced on a large scale and also have tailorable properties that match those afforded by the polymerization of synthetic surfactants. In this paper, a scalable and versatile production method for biosurfactants based on a hydrophilic intrinsically disordered protein (IDP) sequence with a genetically engineered hydrophobic domain is used to study variables that impact their physicochemical and self-assembling properties. These amphiphilic sequences were found to self-assemble into micelles over a broad range of temperatures, pH values, and ionic strengths. To investigate the role of the IDP hydrophilic domain on self-assembly, variants with increased overall charges and systematically decreased IDP domain lengths were produced and examined for their sizes, morphologies, and critical micelle concentrations (CMCs). The results of these studies indicate that decreasing the length of the IDP domain and consequently the molecular weight and hydrophilic fraction leads to smaller micelles. In addition, significantly increasing the amount of charged residues in the hydrophilic IDP domain results in micelles of similar sizes but with higher CMC values. This represents an initial step in developing a quantitative model for the future engineering of biosurfactants based on this IDP sequence.
Collapse
Affiliation(s)
- Sarah H Klass
- Department of Chemistry, University of California Berkeley, Berkeley, California 94720, United States
| | - Jamie M Gleason
- Department of Chemistry, University of California Berkeley, Berkeley, California 94720, United States
| | - Anthony O Omole
- Department of Chemistry, University of California Berkeley, Berkeley, California 94720, United States
| | - Bibiana Onoa
- Howard Hughes Medical Institute, University of California, Berkeley, California 94720, United States
| | - Carlos J Bustamante
- Howard Hughes Medical Institute, University of California, Berkeley, California 94720, United States.,Institute for Quantitative Biosciences, University of California, Berkeley, California 94720, United States.,Department of Molecular and Cell Biology, University of California, Berkeley, California 94720, United States
| | - Matthew B Francis
- Department of Chemistry, University of California Berkeley, Berkeley, California 94720, United States.,Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| |
Collapse
|
7
|
Zhan QW, Gao J, Li D, Huang Y. High throughput onion-like liposome formation with efficient protein encapsulation under flash antisolvent mixing. J Colloid Interface Sci 2022; 618:185-195. [PMID: 35338925 DOI: 10.1016/j.jcis.2022.03.043] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 01/28/2022] [Accepted: 03/09/2022] [Indexed: 12/12/2022]
Abstract
Achieving a high encapsulation efficiency and loading capacity of proteins in lecithin-based liposomes has always been a challenge. Here, we use Flash Nano-Precipitation (FNP) to produce liposomes and investigated the encapsulation of model protein (Bovine Serum Albumin, BSA). Through rapid turbulent mixing, we obtained liposomes with small size, low polydispersity, and good batch repeatability at a high production rate. We demonstrated that the bilayer of liposomes prepared solely using lecithin was defective, which led to the fusion, and increased size and polydispersity. When cholesterol was added to reach a lecithin-to-cholesterol molar ratio of 5:3, a compact bilayer formed to effectively inhibit liposome fusion. The encapsulation efficiency and loading capacity of BSA was as high as ∼ 68% and ∼ 6% in lecithin-cholesterol liposome, respectively, far exceeding the values reported in the literature. Further study by Quartz Crystal Microbalance with Dissipation (QCM-D) revealed that the highly effective encapsulation was due to the rapid mutual adsorption between BSA and defective/curved lecithin double layers during the liposome formation. Such rapid mutual adsorption leads to the layer-by-layer assembly and formation of onion-like compact liposome structure as revealed by Cryo-TEM. This simple FNP method provides a scalable manufacturing approach for liposomes with efficient protein encapsulation. The revealed adsorption mechanism between protein and lecithin bilayers could also serve as a guide for similar studies.
Collapse
Affiliation(s)
- Qiang-Wei Zhan
- College of Biological Science and Engineering, Fuzhou University, Fuzhou 350108, China
| | - Jun Gao
- College of Biological Science and Engineering, Fuzhou University, Fuzhou 350108, China
| | - Dongcui Li
- InCipirit Tech (Guangzhou) Co., Ltd., Guangzhou, Guangdong, China
| | - Yan Huang
- College of Biological Science and Engineering, Fuzhou University, Fuzhou 350108, China.
| |
Collapse
|
8
|
Yang C, Li Z, Xu J. Single crystals and two‐dimensional crystalline assemblies of block copolymers. JOURNAL OF POLYMER SCIENCE 2022. [DOI: 10.1002/pol.20210866] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Chen Yang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering Zhejiang University Hangzhou China
| | - Zi‐Xian Li
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering Zhejiang University Hangzhou China
| | - Jun‐Ting Xu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering Zhejiang University Hangzhou China
| |
Collapse
|
9
|
Rodichkin ID, Gumerov RA, Potemkin II. Self-assembly of miktoarm palm tree-like star copolymers in a selective solvent. J Colloid Interface Sci 2022; 606:1966-1973. [PMID: 34749445 DOI: 10.1016/j.jcis.2021.09.196] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 06/29/2021] [Accepted: 09/30/2021] [Indexed: 11/25/2022]
Abstract
Amphiphilic miktoarm star copolymers with one long solvophobic arm (a "stem") and several short solvophilic arms (the "leaves") were studied in a selective solvent using mesoscopic computer simulations. The conventional morphologies (spherical, cylindrical and vesicular) as well as the mixed ones were obtained. However, the resulting diagram of states appeared to be different from the diagram of the linear diblock copolymer with the analogous composition. Namely, the increase of the number of leaves at fixed solvophobic-solvophilic ratio leads to the transition from the vesicles to the cylinders, while the latter ones eventually transform into spherical micelles in the case of highly branched copolymers. The observed effect appears due to the increase of the interfacial area between the collapsed and swollen blocks per single macromolecule. In turn, the increase of the solvent selectivity shifts the stability region of the cylindrical micelles to the region of more symmetric copolymer composition. Meanwhile, the compatibility between the blocks has a weak effect on the resulting morphology. Finally, it was found that the increase in the number of leaves and the simultaneous decrease in their length results in the localization of higher amount of solvophilic segments near the core-solvent interface, which in the case of cylindrical micelles significantly affects the shape of the aggregates making them thinner and longer.
Collapse
Affiliation(s)
- Ivan D Rodichkin
- Physics Department, Lomonosov Moscow State University, Leninskie Gory 1-2, Moscow 119991, Russian Federation
| | - Rustam A Gumerov
- Physics Department, Lomonosov Moscow State University, Leninskie Gory 1-2, Moscow 119991, Russian Federation; DWI - Leibniz Institute for Interactive Materials e.V., Forckenbeckstraße 50, Aachen 52056, Germany
| | - Igor I Potemkin
- Physics Department, Lomonosov Moscow State University, Leninskie Gory 1-2, Moscow 119991, Russian Federation; DWI - Leibniz Institute for Interactive Materials e.V., Forckenbeckstraße 50, Aachen 52056, Germany; National Research South Ural State University, Chelyabinsk 454080, Russian Federation.
| |
Collapse
|
10
|
Vena MP, de Moor D, Ianiro A, Tuinier R, Patterson JP. Kinetic state diagrams for a highly asymmetric block copolymer assembled in solution. SOFT MATTER 2021; 17:1084-1090. [PMID: 33289775 DOI: 10.1039/d0sm01596b] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Polymer self-assembly is used to form nanomaterials with a wide range of structures. While self-assembly of polymers in bulk has been thoroughly explored, the same process in solution remains widely used but partially unresolved, due to the formation of structures which are often kinetically trapped. In this paper we report kinetic state diagrams of polystyrene-b-poly(ethylene oxide) block copolymer in water by changing the solvent-switch assembly conditions. We study 36 different conditions for a single block copolymer, exploring three parameters: polymer concentration, temperature and rate addition of selective solvent. The data shows that polymer concentration plays an important role in determining which morphologies are accessible within a given set of experimental parameters and provides evidence that vesicles can evolve into particles with complex internal structures, supportive of recent mechanistic studies. Most importantly, the data shows a complex relationship between all parameters and the resulting kinetically trapped morphologies indicating that combined in situ and ex situ studies are required to gain a fundamental understanding of kinetically controlled block copolymer assembly processes.
Collapse
Affiliation(s)
- M Paula Vena
- Laboratory of Physical Chemistry, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands
| | | | | | | | | |
Collapse
|
11
|
Ma C, Wang Z, Huang X, Lu G, Manners I, Winnik MA, Feng C. Water-Dispersible, Colloidally Stable, Surface-Functionalizable Uniform Fiberlike Micelles Containing a π-Conjugated Oligo(p-phenylenevinylene) Core of Controlled Length. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c01631] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Chen Ma
- Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences 345 Lingling Road, Shanghai 200032, People’s Republic of China
| | - Zhiqin Wang
- Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences 345 Lingling Road, Shanghai 200032, People’s Republic of China
| | - Xiaoyu Huang
- Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences 345 Lingling Road, Shanghai 200032, People’s Republic of China
| | - Guolin Lu
- Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences 345 Lingling Road, Shanghai 200032, People’s Republic of China
| | - Ian Manners
- Department of Chemistry, University of Victoria, 3800 Finnerty Road, Victoria, British Columbia V8P 5C2, Canada
| | - Mitchell A. Winnik
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario M5S 3E2, Canada
| | - Chun Feng
- Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences 345 Lingling Road, Shanghai 200032, People’s Republic of China
| |
Collapse
|
12
|
Urbánek T, Trousil J, Rak D, Gunár K, Konefał R, Šlouf M, Sedlák M, Šebestová Janoušková O, Hrubý M. γ-Butyrolactone Copolymerization with the Well-Documented Polymer Drug Carrier Poly(ethylene oxide)-block-poly(ε-caprolactone) to Fine-Tune Its Biorelevant Properties. Macromol Biosci 2020; 20:e1900408. [PMID: 32174005 DOI: 10.1002/mabi.201900408] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Revised: 01/22/2020] [Indexed: 02/01/2023]
Abstract
Polymeric drug carriers exhibit excellent properties that advance drug delivery systems. In particular, carriers based on poly(ethylene oxide)-block-poly(ε-caprolactone) are very useful in pharmacokinetics. In addition to their proven biocompatibility, there are several requirements for the efficacy of the polymeric drug carriers after internalization, e.g., nanoparticle behavior, cellular uptake, the rate of degradation, and cellular localization. The introduction of γ-butyrolactone units into the hydrophobic block enables the tuning of the abovementioned properties over a wide range. In this study, a relatively high content of γ-butyrolactone units with a reasonable yield of ≈60% is achieved by anionic ring-opening copolymerization using 1,5,7-triazabicyclo[4.4.0]dec-5-ene as a very efficient catalyst in the nonpolar environment of toluene with an incorporated γ-butyrolactone content of ≈30%. The content of γ-butyrolactone units can be easily modulated according to the feed ratio of the monomers. This method enables control over the rate of degradation so that when the content of γ-butyrolactone increases, the rate of degradation increases. These findings broaden the application possibilities of polyester-polyether-based nanoparticles for biomedical applications, such as drug delivery systems.
Collapse
Affiliation(s)
- Tomáš Urbánek
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského náměstí 2, 162 00, Prague 6, Czechia
| | - Jiří Trousil
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského náměstí 2, 162 00, Prague 6, Czechia.,Department of Analytical Chemistry, Charles University, Faculty of Science, Hlavova 8, 128 43, Prague 2, Czechia
| | - Dmytro Rak
- Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 040 01, Košice, Slovakia
| | - Kristýna Gunár
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského náměstí 2, 162 00, Prague 6, Czechia
| | - Rafał Konefał
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského náměstí 2, 162 00, Prague 6, Czechia
| | - Miroslav Šlouf
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského náměstí 2, 162 00, Prague 6, Czechia
| | - Marián Sedlák
- Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 040 01, Košice, Slovakia
| | - Olga Šebestová Janoušková
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského náměstí 2, 162 00, Prague 6, Czechia
| | - Martin Hrubý
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského náměstí 2, 162 00, Prague 6, Czechia
| |
Collapse
|
13
|
González García Á, Ianiro A, Beljon R, Leermakers FAM, Tuinier R. (Homo)polymer-mediated colloidal stability of micellar solutions. SOFT MATTER 2020; 16:1560-1571. [PMID: 31950966 DOI: 10.1039/c9sm01665a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Despite their wide range of applications, there is a remarkable lack of fundamental understanding about how micelles respond to other components in solution. The colloidal stability of micellar solutions in presence of (homo)polymers is investigated here following a theoretical bottom-up approach. A polymer-mediated micelle-micelle interaction is extracted from changes in the micelle-unimer equilibrium as a function of the inter-micelle distance. The homopolymer-mediated diblock copolymer micelle-micelle interaction is studied both for depletion and adsorption of the homopolymer. The fluffy nature of the solvophilic domain (corona) of the micelle weakens the depletion-induced destabilization. Accumulation of polymers into the corona induces bridging attraction between micelles. In fact, both depletion and adsorption phenomena are regulated by the coronal thickness relative to the size of the added polymer. Penetration of guest compounds into the coronal domain of crew-cut micelles, with a narrower yet denser corona, is less pronounced as for starlike micelles (with a more diffuse corona). Therefore, crew-cut micelles are less sensitive to the effect of added compounds, and hence more suitable for applications in multicomponent systems, such as industrial formulations or biological fluids. The trends observed for the colloidal stability of crew-cut micelles qualitatively match with our experimental observations on aqueous dispersions of polycaprolactone-polyethylene glycol (PCL-PEO) micellar suspensions with added PEO chains.
Collapse
Affiliation(s)
- Álvaro González García
- Van't Hoff Laboratory for Physical and Colloid Chemistry, Department of Chemistry & Debye Institute, Utrecht University, Padualaan 8, 3584 CH, The Netherlands.
| | | | | | | | | |
Collapse
|
14
|
Petkau-Milroy K, Ianiro A, Ahn MML, Magana JR, Vleugels MEJ, Lamers BAG, Tuinier R, Voets IK, Palmans ARA, Meijer EW. Architecture-Dependent Interplay between Self-Assembly and Crystallization in Discrete Block Co-Oligomers. ACS Macro Lett 2020; 9:38-42. [PMID: 35638657 DOI: 10.1021/acsmacrolett.9b00814] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Access to versatile and stable nanostructures formed by the self-assembly of block copolymers in water is essential for biomedical applications. These applications require control over the stability, morphology, and size of the formed nanostructures. Here, we study the self-assembly in water of a library of fully discrete and sequence-controlled AB-type block co-oligomers (BCOs) of oligo(l-lactic acid)-b-oligo(ethylene glycol). In this series, we eliminate all the inherent uncertainty associated with molar mass, ratio, and compositional dispersity, but vary the ratio between the water-soluble and water-insoluble parts. The BCO library is designed in such a way that vesicles, spherical micelles, and cylindrical micelles are generated in solution, hereby covering a variety of common morphologies. With the help of self-consistent field (SCF) computations, the thermodynamic structures in water are predicted for all structures. The morphologies formed were experimentally analyzed using a combination of calorimetry and scattering techniques. When comparing the experimentally found structures with those predicted, we find an excellent agreement. Intriguingly, calorimetry showed the presence of crystallized l-lactic acid (LLA) units in the bilayer of the lamellar forming BCO. Despite this crystallinity, there is no mismatch between the predicted and observed bilayer thicknesses upon self-assembly in water. In this case, phase separation driven by the hydrophobic LLA block coincides with crystallization, resulting in stable morphologies. Thus, SCF guided library design and sample preparation can lead toward robust formulations of nanoparticles.
Collapse
|
15
|
Ianiro A, Chi M, Hendrix MMRM, Koç AV, Eren ED, Sztucki M, Petukhov AV, de With G, Esteves ACC, Tuinier R. Block copolymer hierarchical structures from the interplay of multiple assembly pathways. Polym Chem 2020. [DOI: 10.1039/d0py00081g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Structurally complex hierarchical block copolymer assemblies can be formed in solution by controlling the interplay of phase separation, crystallization and block segregation with temperature.
Collapse
Affiliation(s)
- Alessandro Ianiro
- Laboratory of Physical Chemistry
- Department of Chemical Engineering and Chemistry
- Eindhoven University of Technology
- 5600 MB Eindhoven
- The Netherlands
| | - Meng Chi
- Laboratory of Physical Chemistry
- Department of Chemical Engineering and Chemistry
- Eindhoven University of Technology
- 5600 MB Eindhoven
- The Netherlands
| | - Marco M. R. M. Hendrix
- Laboratory of Physical Chemistry
- Department of Chemical Engineering and Chemistry
- Eindhoven University of Technology
- 5600 MB Eindhoven
- The Netherlands
| | - Ali Vala Koç
- Laboratory of Physical Chemistry
- Department of Chemical Engineering and Chemistry
- Eindhoven University of Technology
- 5600 MB Eindhoven
- The Netherlands
| | - E. Deniz Eren
- Laboratory of Physical Chemistry
- Department of Chemical Engineering and Chemistry
- Eindhoven University of Technology
- 5600 MB Eindhoven
- The Netherlands
| | | | - Andrei V. Petukhov
- Van ‘t Hoff Laboratory for Physical and Colloid Chemistry
- Department of Chemistry and Debye Institute
- Utrecht University
- Utrecht
- The Netherlands
| | - Gijsbertus de With
- Laboratory of Physical Chemistry
- Department of Chemical Engineering and Chemistry
- Eindhoven University of Technology
- 5600 MB Eindhoven
- The Netherlands
| | - A. Catarina C. Esteves
- Laboratory of Physical Chemistry
- Department of Chemical Engineering and Chemistry
- Eindhoven University of Technology
- 5600 MB Eindhoven
- The Netherlands
| | - Remco Tuinier
- Laboratory of Physical Chemistry
- Department of Chemical Engineering and Chemistry
- Eindhoven University of Technology
- 5600 MB Eindhoven
- The Netherlands
| |
Collapse
|
16
|
Koochaki A, Moghbeli MR, Nikkhah SJ, Ianiro A, Tuinier R. Dual responsive PMEEECL–PAE block copolymers: a computational self-assembly and doxorubicin uptake study. RSC Adv 2020; 10:3233-3245. [PMID: 35497759 PMCID: PMC9048636 DOI: 10.1039/c9ra09066e] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2019] [Accepted: 01/08/2020] [Indexed: 11/21/2022] Open
Abstract
The self-assembly behaviour of dual-responsive block copolymers and their ability to solubilize the anticancer drug doxorubicin (DOX) has been investigated using all-atom molecular dynamics (MD) simulations, MARTINI coarse-grained (CG) force field simulation and Scheutjens–Fleer self-consistent field (SCF) computations. These diblock copolymers, composed of poly{γ-2-[2-(2-methoxyethoxy)ethoxy]ethoxy-ε-caprolactone} (PMEEECL) and poly(β-amino ester) (PAE) are dual-responsive: the PMEEECL block is thermoresponsive (becomes insoluble above a certain temperature), while the PAE block is pH-responsive (becomes soluble below a certain pH). Three MEEECL20–AEM compositions with M = 5, 10, and 15, have been studied. All-atom MD simulations have been performed to calculate the coil-to-globule transition temperature (Tcg) of these copolymers and finding appropriate CG mapping for both PMEEECL–PAE and DOX. The output of the MARTINI CG simulations is in agreement with SCF predictions. The results show that DOX is solubilized with high efficiency (75–80%) at different concentrations inside the PMEEECL–PAE micelles, although, interestingly, the loading efficiency is reduced by increasing the drug concentration. The non-bonded interaction energy and the RDF between DOX and water beads confirm this result. Finally, MD simulations and SCF computations reveal that the responsive behaviour of PMEEECL–PAE self-assembled structures take place at temperature and pH ranges appropriate for drug delivery. The self-assembly behaviour of dual-responsive block copolymers and their ability to solubilize the drug doxorubicin is demonstrated using molecular dynamics simulations, coarse-grained force field simulations and self-consistent field theory.![]()
Collapse
Affiliation(s)
- Amin Koochaki
- Smart Polymers and Nanocomposites Research Group
- School of Chemical Engineering
- Iran University of Science and Technology
- Tehran 16846-13114
- Iran
| | - Mohammad Reza Moghbeli
- Smart Polymers and Nanocomposites Research Group
- School of Chemical Engineering
- Iran University of Science and Technology
- Tehran 16846-13114
- Iran
| | - Sousa Javan Nikkhah
- Smart Polymers and Nanocomposites Research Group
- School of Chemical Engineering
- Iran University of Science and Technology
- Tehran 16846-13114
- Iran
| | - Alessandro Ianiro
- Laboratory of Physical Chemistry
- Department of Chemical Engineering and Chemistry
- Eindhoven University of Technology
- 5600 MB Eindhoven
- The Netherlands
| | - Remco Tuinier
- Laboratory of Physical Chemistry
- Department of Chemical Engineering and Chemistry
- Eindhoven University of Technology
- 5600 MB Eindhoven
- The Netherlands
| |
Collapse
|
17
|
Vleugels MEJ, de Zwart ME, Magana JR, Lamers BAG, Voets IK, Meijer EW, Petkau-Milroy K, Palmans ARA. Effects of crystallinity and dispersity on the self-assembly behavior of block co-oligomers in water. Polym Chem 2020. [DOI: 10.1039/d0py01161d] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Dispersity and crystallinity affect the dimensions of lamellar structures formed by amphiphilic block co-oligomers in water as well as the reproducibility of sample formation; spherical and cylindrical morphologies are less affected.
Collapse
Affiliation(s)
- Marle E. J. Vleugels
- Laboratory of Macromolecular and Organic Chemistry and Institute for Complex Molecular Systems
- Eindhoven University of Technology
- 5600 MB Eindhoven
- The Netherlands
| | - Marnie E. de Zwart
- Laboratory of Macromolecular and Organic Chemistry and Institute for Complex Molecular Systems
- Eindhoven University of Technology
- 5600 MB Eindhoven
- The Netherlands
| | - Jose Rodrigo Magana
- Laboratory of Self-Organizing Soft Matter and Institute for Complex Molecular Systems
- Eindhoven University of Technology
- 5600 MB Eindhoven
- The Netherlands
| | - Brigitte A. G. Lamers
- Laboratory of Macromolecular and Organic Chemistry and Institute for Complex Molecular Systems
- Eindhoven University of Technology
- 5600 MB Eindhoven
- The Netherlands
| | - Ilja K. Voets
- Laboratory of Self-Organizing Soft Matter and Institute for Complex Molecular Systems
- Eindhoven University of Technology
- 5600 MB Eindhoven
- The Netherlands
| | - E. W. Meijer
- Laboratory of Macromolecular and Organic Chemistry and Institute for Complex Molecular Systems
- Eindhoven University of Technology
- 5600 MB Eindhoven
- The Netherlands
| | - Katja Petkau-Milroy
- Laboratory of Macromolecular and Organic Chemistry and Institute for Complex Molecular Systems
- Eindhoven University of Technology
- 5600 MB Eindhoven
- The Netherlands
| | - Anja R. A. Palmans
- Laboratory of Macromolecular and Organic Chemistry and Institute for Complex Molecular Systems
- Eindhoven University of Technology
- 5600 MB Eindhoven
- The Netherlands
| |
Collapse
|
18
|
Ianiro A, González García Á, Wijker S, Patterson JP, Esteves ACC, Tuinier R. Controlling the Spatial Distribution of Solubilized Compounds within Copolymer Micelles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:4776-4786. [PMID: 30811942 PMCID: PMC6448116 DOI: 10.1021/acs.langmuir.9b00180] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Revised: 02/25/2019] [Indexed: 05/29/2023]
Abstract
The solubilization of lyophobic compounds in block copolymer micelles has been extensively investigated but remains only partially understood. There is a need to understand the fundamental parameters that determine the spatial distribution of the solubilized compounds within the micelles. Controlling this feature is a key aspect in the design of drug delivery systems with tailored release properties. Using Scheutjens-Fleer self-consistent field (SF-SCF) computations, we found that solubilization is regulated by a complex interplay between enthalpic and entropic contributions and that the spatial distribution can be controlled by the concentration and solubility of the guest compound in the dispersion medium. Upon solubilization, a characteristic change in size and mass of the micelles is predicted. This can be used as a fingerprint to indirectly assess the spatial distribution. Based on these findings, we developed two experimental protocols to control and assess the spatial distribution of lyophobic compounds within block copolymer micelles.
Collapse
Affiliation(s)
- Alessandro Ianiro
- Laboratory
of Physical Chemistry, Department of Chemical Engineering
and Chemistry and Institute for Complex Molecular Systems (ICMS), Eindhoven University of Technology,
P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Álvaro González García
- Laboratory
of Physical Chemistry, Department of Chemical Engineering
and Chemistry and Institute for Complex Molecular Systems (ICMS), Eindhoven University of Technology,
P.O. Box 513, 5600 MB Eindhoven, The Netherlands
- Van’t
Hoff Laboratory for Physical and Colloid Chemistry, Department of
Chemistry and Debye Institute, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
| | - Stefan Wijker
- Laboratory
of Physical Chemistry, Department of Chemical Engineering
and Chemistry and Institute for Complex Molecular Systems (ICMS), Eindhoven University of Technology,
P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Joseph P. Patterson
- Department
of Chemistry, University of California,
Irvine, C 92697 Irvine, United States
| | - A. Catarina C. Esteves
- Laboratory
of Physical Chemistry, Department of Chemical Engineering
and Chemistry and Institute for Complex Molecular Systems (ICMS), Eindhoven University of Technology,
P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Remco Tuinier
- Laboratory
of Physical Chemistry, Department of Chemical Engineering
and Chemistry and Institute for Complex Molecular Systems (ICMS), Eindhoven University of Technology,
P.O. Box 513, 5600 MB Eindhoven, The Netherlands
- Van’t
Hoff Laboratory for Physical and Colloid Chemistry, Department of
Chemistry and Debye Institute, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
| |
Collapse
|
19
|
One‐dimensional growth kinetics for formation of cylindrical crystalline micelles of block copolymers. POLYMER CRYSTALLIZATION 2019. [DOI: 10.1002/pcr2.10047] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
|
20
|
Trousil J, Syrová Z, Dal NJK, Rak D, Konefał R, Pavlova E, Matějková J, Cmarko D, Kubíčková P, Pavliš O, Urbánek T, Sedlák M, Fenaroli F, Raška I, Štěpánek P, Hrubý M. Rifampicin Nanoformulation Enhances Treatment of Tuberculosis in Zebrafish. Biomacromolecules 2019; 20:1798-1815. [PMID: 30785284 DOI: 10.1021/acs.biomac.9b00214] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Mycobacterium tuberculosis, the etiologic agent of tuberculosis, is an intracellular pathogen of alveolar macrophages. These cells avidly take up nanoparticles, even without the use of specific targeting ligands, making the use of nanotherapeutics ideal for the treatment of such infections. Methoxy poly(ethylene oxide)- block-poly(ε-caprolactone) nanoparticles of several different polymer blocks' molecular weights and sizes (20-110 nm) were developed and critically compared as carriers for rifampicin, a cornerstone in tuberculosis therapy. The polymeric nanoparticles' uptake, consequent organelle targeting and intracellular degradation were shown to be highly dependent on the nanoparticles' physicochemical properties (the cell uptake half-lives 2.4-21 min, the degradation half-lives 51.6 min-ca. 20 h after the internalization). We show that the nanoparticles are efficiently taken up by macrophages and are able to effectively neutralize the persisting bacilli. Finally, we demonstrate, using a zebrafish model of tuberculosis, that the nanoparticles are well tolerated, have a curative effect, and are significantly more efficient compared to a free form of rifampicin. Hence, these findings demonstrate that this system shows great promise, both in vitro and in vivo, for the treatment of tuberculosis.
Collapse
Affiliation(s)
- Jiří Trousil
- Institute of Macromolecular Chemistry, Czech Academy of Sciences , Heyrovského náměstí 2 , 162 00 Prague 6 , Czech Republic.,Department of Analytical Chemistry, Faculty of Science , Charles University , Hlavova 8 , 128 43 Prague 2 , Czech Republic
| | - Zdeňka Syrová
- Institute of Biology and Medical Genetics, First Faculty of Medicine , Charles University and General University Hospital in Prague , Albertov 4 , 128 00 Prague 2 , Czech Republic
| | - Nils-Jørgen K Dal
- Department of Biosciences , University of Oslo , Blindernveien 31 , 0371 Oslo , Norway
| | - Dmytro Rak
- Institute of Experimental Physics , Slovak Academy of Sciences , Watsonova 47 , 040 01 Košice , Slovakia
| | - Rafał Konefał
- Institute of Macromolecular Chemistry, Czech Academy of Sciences , Heyrovského náměstí 2 , 162 00 Prague 6 , Czech Republic
| | - Ewa Pavlova
- Institute of Macromolecular Chemistry, Czech Academy of Sciences , Heyrovského náměstí 2 , 162 00 Prague 6 , Czech Republic
| | - Jana Matějková
- Department of Medical Microbiology, Second Faculty of Medicine , Charles University and Motol University Hospital , V Úvalu 84 , 150 06 Prague 5 , Czech Republic
| | - Dušan Cmarko
- Institute of Biology and Medical Genetics, First Faculty of Medicine , Charles University and General University Hospital in Prague , Albertov 4 , 128 00 Prague 2 , Czech Republic
| | - Pavla Kubíčková
- Center of Biological Defense , Military Health Institute, Military Medical Agency , 561 66 Těchonín , Czech Republic
| | - Oto Pavliš
- Center of Biological Defense , Military Health Institute, Military Medical Agency , 561 66 Těchonín , Czech Republic
| | - Tomáš Urbánek
- Institute of Macromolecular Chemistry, Czech Academy of Sciences , Heyrovského náměstí 2 , 162 00 Prague 6 , Czech Republic
| | - Marián Sedlák
- Institute of Experimental Physics , Slovak Academy of Sciences , Watsonova 47 , 040 01 Košice , Slovakia
| | - Federico Fenaroli
- Department of Biosciences , University of Oslo , Blindernveien 31 , 0371 Oslo , Norway
| | - Ivan Raška
- Institute of Biology and Medical Genetics, First Faculty of Medicine , Charles University and General University Hospital in Prague , Albertov 4 , 128 00 Prague 2 , Czech Republic
| | - Petr Štěpánek
- Institute of Macromolecular Chemistry, Czech Academy of Sciences , Heyrovského náměstí 2 , 162 00 Prague 6 , Czech Republic
| | - Martin Hrubý
- Institute of Macromolecular Chemistry, Czech Academy of Sciences , Heyrovského náměstí 2 , 162 00 Prague 6 , Czech Republic
| |
Collapse
|
21
|
Liquid–liquid phase separation during amphiphilic self-assembly. Nat Chem 2019; 11:320-328. [DOI: 10.1038/s41557-019-0210-4] [Citation(s) in RCA: 135] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Accepted: 12/26/2018] [Indexed: 11/08/2022]
|
22
|
González García Á, Timmers EM, Romijn N, Song S, Sahebali S, Tuinier R, Voets IK. Micellization of a weakly charged surfactant in aqueous salt solution: Self-consistent field theory and experiments. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2018.10.039] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
23
|
García Á, Ianiro A, Tuinier R. On the Colloidal Stability of Spherical Copolymeric Micelles. ACS OMEGA 2018; 3:17976-17985. [PMID: 30613816 PMCID: PMC6312634 DOI: 10.1021/acsomega.8b02548] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Accepted: 12/07/2018] [Indexed: 06/09/2023]
Abstract
Using self-consistent field (SCF) calculations, we systematically quantify the pair interactions between spherical diblock copolymer micelles following a bottom-up approach. From the equilibrium properties of self-assembling micelles at different separation distances, a simple yet insightful pair interaction can be extracted. The SCF results match with an analytical model based upon closed expressions for the free energy change per diblock copolymer in the micelle. To gain insights into the colloidal stability of dilute micelle suspensions, the second virial coefficient normalized by the undistorted micelle volume (B 2 *) is evaluated. For stable micelles (B 2 * ≳ -6), we find a weak dependence of B 2 * on solvophilic block length for varying core-forming block properties (core solvation and block length). The micelle suspension gets unstable (B 2 * ≲ -6) when the corona-forming block crosses Θ-solvent conditions toward poor solvency. In contrast with what is expected from models where the soft nature of the micelle is not taken into account, increasing the effective grafting density of solvophilic tails from the core then leads to colloidal destabilization of the micelle suspension.
Collapse
Affiliation(s)
- Álvaro
González García
- Van
’t Hoff Laboratory for Physical and Colloid Chemistry, Department
of Chemistry & Debye Institute, Utrecht
University, Padualaan
8, 3584 CH Utrecht, The Netherlands
- Laboratory
of Physical Chemistry, Department of Chemical Engineering and Chemistry,
& Institute for Complex Molecular Systems (ICMS), Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Alessandro Ianiro
- Laboratory
of Physical Chemistry, Department of Chemical Engineering and Chemistry,
& Institute for Complex Molecular Systems (ICMS), Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Remco Tuinier
- Van
’t Hoff Laboratory for Physical and Colloid Chemistry, Department
of Chemistry & Debye Institute, Utrecht
University, Padualaan
8, 3584 CH Utrecht, The Netherlands
- Laboratory
of Physical Chemistry, Department of Chemical Engineering and Chemistry,
& Institute for Complex Molecular Systems (ICMS), Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| |
Collapse
|
24
|
Elizondo-García ME, Márquez-Miranda V, Araya-Durán I, Valencia-Gallegos JA, González-Nilo FD. Self-Assembly Behavior of Amphiphilic Janus Dendrimers in Water: A Combined Experimental and Coarse-Grained Molecular Dynamics Simulation Approach. Molecules 2018; 23:E969. [PMID: 29690495 PMCID: PMC6017225 DOI: 10.3390/molecules23040969] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2018] [Revised: 04/16/2018] [Accepted: 04/16/2018] [Indexed: 11/28/2022] Open
Abstract
Amphiphilic Janus dendrimers (JDs) are repetitively branched molecules with hydrophilic and hydrophobic components that self-assemble in water to form a variety of morphologies, including vesicles analogous to liposomes with potential pharmaceutical and medical application. To date, the self-assembly of JDs has not been fully investigated thus it is important to gain insight into its mechanism and dependence on JDs’ molecular structure. In this study, the aggregation behavior in water of a second-generation bis-MPA JD was evaluated using experimental and computational methods. Dispersions of JDs in water were carried out using the thin-film hydration and ethanol injection methods. Resulting assemblies were characterized by dynamic light scattering, confocal microscopy, and atomic force microscopy. Furthermore, a coarse-grained molecular dynamics (CG-MD) simulation was performed to study the mechanism of JDs aggregation. The obtaining of assemblies in water with no interdigitated bilayers was confirmed by the experimental characterization and CG-MD simulation. Assemblies with dendrimersome characteristics were obtained using the ethanol injection method. The results of this study establish a relationship between the molecular structure of the JD and the properties of its aggregates in water. Thus, our findings could be relevant for the design of novel JDs with tailored assemblies suitable for drug delivery systems.
Collapse
Affiliation(s)
- Mariana E Elizondo-García
- Escuela de Ingeniería y Ciencias, Tecnológico de Monterrey, Av. Eugenio Garza Sada 2501 Sur, Monterrey 64849, Mexico.
| | - Valeria Márquez-Miranda
- Center for Bioinformatics and Integrative Biology (CBIB), Facultad de Ciencias Biológicas, Universidad Andrés Bello, Av. República 330, Santiago 8370186, Chile.
| | - Ingrid Araya-Durán
- Center for Bioinformatics and Integrative Biology (CBIB), Facultad de Ciencias Biológicas, Universidad Andrés Bello, Av. República 330, Santiago 8370186, Chile.
| | - Jesús A Valencia-Gallegos
- Escuela de Ingeniería y Ciencias, Tecnológico de Monterrey, Av. Eugenio Garza Sada 2501 Sur, Monterrey 64849, Mexico.
| | - Fernando D González-Nilo
- Center for Bioinformatics and Integrative Biology (CBIB), Facultad de Ciencias Biológicas, Universidad Andrés Bello, Av. República 330, Santiago 8370186, Chile.
- Centro Interdisciplinario de Neurociencia de Valparaíso, Facultad de Ciencias, Universidad de Valparaíso, Gran Bretaña 1111, Playa Ancha, Valparaíso 2360102, Chile.
| |
Collapse
|