1
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Pathak DK, Dayanand D, Thakur OP, Kumar R. Raman area- and thermal- mapping studies of faceted nano-crystalline α-Fe2O3 thin films deposited by spray pyrolysis. CAN J CHEM 2021. [DOI: 10.1139/cjc-2021-0302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Different advanced techniques including Raman area mapping and Raman thermal imaging has been used to investigate various properties of large area iron oxide thin films deposited by spray pyrolysis, on a large area of crystalline silicon substrates under controlled external parameters. Morphological studies reveal that the obtained films acquire lateral faceted crystalline structure of iron oxide. The Raman and SEM images, in unison, confirm the presence and large area distribution of the nano crystals of Fe2O3 phase. Thermal Raman imaging reveals that the obtained iron oxide thin films are robust and thus can be used for appropriate technological applications like electromagnetic shielding.
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Affiliation(s)
- Devesh K. Pathak
- IIT Indore, 226957, Department of Physics, Indore, Madhya Pradesh, India
| | | | | | - Rajesh Kumar
- IIT Indore, 226957, Physics, POD 1A-211, Khandwa Road, Simrol, Indore, MP, India, 453552
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2
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Chemical Imaging of Single Anisotropic Polystyrene/Poly (Methacrylate) Microspheres with Complex Hierarchical Architecture. Polymers (Basel) 2021; 13:polym13091438. [PMID: 33947036 PMCID: PMC8125276 DOI: 10.3390/polym13091438] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 04/23/2021] [Accepted: 04/26/2021] [Indexed: 01/04/2023] Open
Abstract
Monodisperse polystyrene spheres are functional materials with interesting properties, such as high cohesion strength, strong adsorptivity, and surface reactivity. They have shown a high application value in biomedicine, information engineering, chromatographic fillers, supercapacitor electrode materials, and other fields. To fully understand and tailor particle synthesis, the methods for characterization of their complex 3D morphological features need to be further explored. Here we present a chemical imaging study based on three-dimensional confocal Raman microscopy (3D-CRM), scanning electron microscopy (SEM), focused ion beam (FIB), diffuse reflectance infrared Fourier transform (DRIFT), and nuclear magnetic resonance (NMR) spectroscopy for individual porous swollen polystyrene/poly (glycidyl methacrylate-co-ethylene di-methacrylate) particles. Polystyrene particles were synthesized with different co-existing chemical entities, which could be identified and assigned to distinct regions of the same particle. The porosity was studied by a combination of SEM and FIB. Images of milled particles indicated a comparable porosity on the surface and in the bulk. The combination of standard analytical techniques such as DRIFT and NMR spectroscopies yielded new insights into the inner structure and chemical composition of these particles. This knowledge supports the further development of particle synthesis and the design of new strategies to prepare particles with complex hierarchical architectures.
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3
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Janus particles: from concepts to environmentally friendly materials and sustainable applications. Colloid Polym Sci 2020. [DOI: 10.1007/s00396-020-04601-y] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
AbstractJanus particles represent a unique group of patchy particles combining two or more different physical or chemical functionalities at their opposite sides. Especially, individual Janus particles (JPs) with both chemical and geometrical anisotropy as well as their assembled layers provide considerable advantages over the conventional monofunctional particles or surfactant molecules offering (a) a high surface-to-volume ratio; (b) high interfacial activity; (c) target controlling and manipulation of their interfacial activity by external signals such as temperature, light, pH, or ionic strength and achieving switching between stable emulsions and macro-phase separation; (d) recovery and recycling; (e) controlling the mass transport across the interface between the two phases; and finally (f) tunable several functionalities in one particle allowing their use either as carrier materials for immobilized catalytically active substances or, alternatively, their site-selective attachment to substrates keeping another functionality active for further reactions. All these advantages of JPs make them exclusive materials for application in (bio-)catalysis and (bio-)sensing. Considering “green chemistry” aspects covering biogenic materials based on either natural or fully synthetic biocompatible and biodegradable polymers for the design of JPs may solve the problem of toxicity of some existing materials and open new paths for the development of more environmentally friendly and sustainable materials in the very near future. Considering the number of contributions published each year on the topic of Janus particles in general, the number of contributions regarding their environmentally friendly and sustainable applications is by far smaller. This certainly pinpoints an important challenge and is addressed in this review article. The first part of the review focuses on the synthesis of sustainable biogenic or biocompatible Janus particles, as well as strategies for their recovery, recycling, and reusability. The second part addresses recent advances in applications of biogenic/biocompatible and non-biocompatible JPs in environmental and biotechnological fields such as sensing of hazardous pollutants, water decontamination, and hydrogen production. Finally, we provide implications for the rational design of environmentally friendly and sustainable materials based on Janus particles.
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4
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Jung CW, Lee JS, Jalani G, Hwang EY, Lim DW. Thermally-Induced Actuations of Stimuli-Responsive, Bicompartmental Nanofibers for Decoupled Drug Release. Front Chem 2019; 7:73. [PMID: 30838199 PMCID: PMC6390475 DOI: 10.3389/fchem.2019.00073] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Accepted: 01/28/2019] [Indexed: 01/07/2023] Open
Abstract
Stimuli-responsive anisotropic microstructures and nanostructures with different physicochemical properties in discrete compartments, have been developed as advanced materials for drug delivery systems, tissue engineering, regenerative medicine, and biosensing applications. Moreover, their stimuli-triggered actuations would be of great interest for the introduction of the functionality of drug delivery reservoirs and tissue engineering scaffolds. In this study, stimuli-responsive bicompartmental nanofibers (BCNFs), with completely different polymer compositions, were prepared through electrohydrodynamic co-jetting with side-by-side needle geometry. One compartment with thermo-responsiveness was composed of methacrylated poly(N-isopropylacrylamide-co-allylamine hydrochloride) (poly(NIPAM-co-AAh)), while the counter compartment was made of poly(ethylene glycol) dimethacrylates (PEGDMA). Both methacrylated poly(NIPAM-co-AAh) and PEGDMA in distinct compartments were chemically crosslinked in a solid phase by UV irradiation and swelled under aqueous conditions, because of the hydrophilicity of both poly(NIPAM-co-AAh) and PEGDMA. As the temperature increased, BCNFs maintained a clear interface between compartments and showed thermally-induced actuation at the nanoscale due to the collapsed poly(NIPAM-co-AAh) compartment under the PEGDMA compartment of identical dimensions. Different model drugs, bovine serum albumin, and dexamethasone phosphate were alternately loaded into each compartment and released at different rates depending on the temperature and molecular weight of the drugs. These BCNFs, as intelligent nanomaterials, have great potential as tissue engineering scaffolds and multi-modal drug delivery reservoirs with stimuli-triggered actuation and decoupled drug release.
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Affiliation(s)
| | | | | | | | - Dong Woo Lim
- Department of Bionano Engineering and Bionanotechnology, College of Engineering Sciences, Hanyang University, Ansan, South Korea
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5
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Fan X, Yang J, Loh XJ, Li Z. Polymeric Janus Nanoparticles: Recent Advances in Synthetic Strategies, Materials Properties, and Applications. Macromol Rapid Commun 2018; 40:e1800203. [PMID: 29900609 DOI: 10.1002/marc.201800203] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Revised: 04/17/2018] [Indexed: 12/13/2022]
Abstract
Polymeric Janus nanoparticles with two sides of incompatible chemistry have received increasing attention due to their tunable asymmetric structure and unique material characteristics. Recently, with the rapid progress in controlled polymerization combined with novel fabrication techniques, a large array of functional polymeric Janus particles are diversified with sophisticated architecture and applications. In this review, the most recently developed strategies for controlled synthesis of polymeric Janus nanoparticles with well-defined size and complex superstructures are summarized. In addition, the pros and cons of each approach in mediating the anisotropic shapes of polymeric Janus particles as well as their asymmetric spatial distribution of chemical compositions and functionalities are discussed and compared. Finally, these newly developed structural nanoparticles with specific shapes and surface functions orientated applications in different domains are also discussed, followed by the perspectives and challenges faced in the further advancement of polymeric Janus nanoparticles as high performance materials.
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Affiliation(s)
- Xiaoshan Fan
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, 453007, China
| | - Jing Yang
- Institute of Materials Research and Engineering, A*STAR (Agency for Science Technology and Research), 2 Fusionopolis Way, Innovis, #08-03, Singapore, 138634, Singapore
| | - Xian Jun Loh
- Institute of Materials Research and Engineering, A*STAR (Agency for Science Technology and Research), 2 Fusionopolis Way, Innovis, #08-03, Singapore, 138634, Singapore
| | - Zibiao Li
- Institute of Materials Research and Engineering, A*STAR (Agency for Science Technology and Research), 2 Fusionopolis Way, Innovis, #08-03, Singapore, 138634, Singapore
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6
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Choi A, Seo KD, Kim DW, Kim BC, Kim DS. Recent advances in engineering microparticles and their nascent utilization in biomedical delivery and diagnostic applications. LAB ON A CHIP 2017; 17:591-613. [PMID: 28101538 DOI: 10.1039/c6lc01023g] [Citation(s) in RCA: 78] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Complex microparticles (MPs) bearing unique characteristics such as well-tailored sizes, various morphologies, and multi-compartments have been attempted to be produced by many researchers in the past decades. However, a conventionally used method of fabricating MPs, emulsion polymerization, has a limitation in achieving the aforementioned characteristics and several approaches such as the microfluidics-assisted (droplet-based microfluidics and flow lithography-based microfluidics), electrohydrodynamics (EHD)-based, centrifugation-based, and template-based methods have been recently suggested to overcome this limitation. The outstanding features of complex MPs engineered through these suggested methods have provided new opportunities for MPs to be applied in a wider range of applications including cell carriers, drug delivery agents, active pigments for display, microsensors, interface stabilizers, and catalyst substrates. Overall, the engineered MPs expose their potential particularly in the field of biomedical engineering as the increased complexity in the engineered MPs fulfills well the requirements of the high-end applications. This review outlines the current trends of newly developed techniques used for engineered MPs fabrication and focuses on the current state of engineered MPs in biomedical applications.
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Affiliation(s)
- Andrew Choi
- Department of Mechanical Engineering, Pohang University of Science and Technology, 77, Cheongam-ro, Nam-gu, Pohang City, Gyeongsangbuk-do 37673, South Korea.
| | - Kyoung Duck Seo
- Department of Mechanical Engineering, Pohang University of Science and Technology, 77, Cheongam-ro, Nam-gu, Pohang City, Gyeongsangbuk-do 37673, South Korea.
| | - Do Wan Kim
- Department of Mechanical Engineering, Pohang University of Science and Technology, 77, Cheongam-ro, Nam-gu, Pohang City, Gyeongsangbuk-do 37673, South Korea.
| | - Bum Chang Kim
- Department of Mechanical Engineering, Pohang University of Science and Technology, 77, Cheongam-ro, Nam-gu, Pohang City, Gyeongsangbuk-do 37673, South Korea.
| | - Dong Sung Kim
- Department of Mechanical Engineering, Pohang University of Science and Technology, 77, Cheongam-ro, Nam-gu, Pohang City, Gyeongsangbuk-do 37673, South Korea.
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7
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Sansanaphongpricha K, DeSantis MC, Chen H, Cheng W, Sun K, Wen B, Sun D. Multibuilding Block Janus Synthesized by Seed-Mediated Self-Assembly for Enhanced Photothermal Effects and Colored Brownian Motion in an Optical Trap. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2017; 13:1602569. [PMID: 27873448 DOI: 10.1002/smll.201602569] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Revised: 09/16/2016] [Indexed: 06/06/2023]
Abstract
The asymmetrical features and unique properties of multibuilding block Janus nanostructures (JNSs) provide superior functions for biomedical applications. However, their production process is very challenging. This problem has hampered the progress of JNS research and the exploration of their applications. In this study, an asymmetrical multibuilding block gold/iron oxide JNS has been generated to enhance photothermal effects and display colored Brownian motion in an optical trap. JNS is formed by seed-mediated self-assembly of nanoparticle-loaded thermocleavable micelles, where the hydrophobic backbones of the polymer are disrupted at high temperatures, resulting in secondary self-assembly and structural rearrangement. The JNS significantly enhances photothermal effects compared to their homogeneous counterpart after near-infrared (NIR) light irradiation. The asymmetrical distribution of gold and iron oxide within JNS also generates uneven thermophoretic force to display active colored Brownian rotational motion in a single-beam gradient optical trap. These properties indicate that the asymmetrical JNS could be employed as a strong photothermal therapy mediator and a fuel-free nanoscale Janus motor under NIR light.
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Affiliation(s)
| | - Michael C DeSantis
- Department of Pharmaceutical Sciences, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Hongwei Chen
- Department of Pharmaceutical Sciences, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Wei Cheng
- Department of Pharmaceutical Sciences, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Kai Sun
- Department of Material Sciences and Engineering, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Bo Wen
- Department of Pharmaceutical Sciences, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Duxin Sun
- Department of Pharmaceutical Sciences, University of Michigan, Ann Arbor, MI, 48109, USA
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8
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Rahmani S, Ashraf S, Hartmann R, Dishman AF, Zyuzin MV, Yu CKJ, Parak WJ, Lahann J. Engineering of nanoparticle size via electrohydrodynamic jetting. Bioeng Transl Med 2016; 1:82-93. [PMID: 29313008 PMCID: PMC5689507 DOI: 10.1002/btm2.10010] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2016] [Revised: 05/12/2016] [Accepted: 05/14/2016] [Indexed: 12/27/2022] Open
Abstract
Engineering the physical properties of particles, especially their size, is an important parameter in the fabrication of successful carrier systems for the delivery of therapeutics. Here, various routes were explored for the fabrication of particles in the nanosize regime. It was demonstrated that the use of a charged species and/or solvent with high dielectric constant can influence the size and distribution of particles, with the charged species having a greater effect on the size of the particles and the solvent a greater effect on the distribution of the particles. In addition to the fabrication of nanoparticles, their fractionation into specific size ranges using centrifugation was also investigated. The in vitro particle uptake and intracellular transport of these nanoparticles was studied as a function of size and incubation period. The highest level of intralysosomal localization was observed for the smallest nanoparticle group (average of 174 nm), followed by the groups with increasing sizes (averages of 378 and 575 nm), most likely due to the faster endosomal uptake of smaller particles. In addition, the internalization of nanoparticle clusters and number of nanoparticles per cell increased with longer incubation periods. This work establishes a technological approach to compartmentalized nanoparticles with defined sizes. This is especially important as relatively subtle differences in size can modulate cell uptake and determine intercellular fate. Future work will need to address the role of specific targeting ligands on cellular uptake and intracellular transport of compartmentalized nanoparticles.
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Affiliation(s)
- Sahar Rahmani
- Biointerfaces Institute, University of Michigan Ann Arbor MI 48109.,Biomedical Engineering University of Michigan Ann Arbor MI 48109.,Institute of Functional Interfaces (IFG), Karlsruhe Institute of Technology (KIT) Karlsruhe Germany
| | - Sumaira Ashraf
- Dept. of Physics Philipps University of Marburg Marburg Germany
| | - Raimo Hartmann
- Dept. of Physics Philipps University of Marburg Marburg Germany
| | - Acacia F Dishman
- Biointerfaces Institute, University of Michigan Ann Arbor MI 48109.,Institute of Functional Interfaces (IFG), Karlsruhe Institute of Technology (KIT) Karlsruhe Germany
| | | | - Chris K J Yu
- Biointerfaces Institute, University of Michigan Ann Arbor MI 48109.,Biomedical Engineering University of Michigan Ann Arbor MI 48109.,Institute of Functional Interfaces (IFG), Karlsruhe Institute of Technology (KIT) Karlsruhe Germany
| | | | - Joerg Lahann
- Biointerfaces Institute, University of Michigan Ann Arbor MI 48109.,Biomedical Engineering University of Michigan Ann Arbor MI 48109.,Institute of Functional Interfaces (IFG), Karlsruhe Institute of Technology (KIT) Karlsruhe Germany.,Chemical Engineering University of Michigan Ann Arbor MI 48109
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9
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Tipping WJ, Lee M, Serrels A, Brunton VG, Hulme AN. Stimulated Raman scattering microscopy: an emerging tool for drug discovery. Chem Soc Rev 2016; 45:2075-89. [PMID: 26839248 PMCID: PMC4839273 DOI: 10.1039/c5cs00693g] [Citation(s) in RCA: 151] [Impact Index Per Article: 18.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2015] [Indexed: 12/26/2022]
Abstract
Optical microscopy techniques have emerged as a cornerstone of biomedical research, capable of probing the cellular functions of a vast range of substrates, whilst being minimally invasive to the cells or tissues of interest. Incorporating biological imaging into the early stages of the drug discovery process can provide invaluable information about drug activity within complex disease models. Spontaneous Raman spectroscopy has been widely used as a platform for the study of cells and their components based on chemical composition; but slow acquisition rates, poor resolution and a lack of sensitivity have hampered further development. A new generation of stimulated Raman techniques is emerging which allows the imaging of cells, tissues and organisms at faster acquisition speeds, and with greater resolution and sensitivity than previously possible. This review focuses on the development of stimulated Raman scattering (SRS), and covers the use of bioorthogonal tags to enhance sample detection, and recent applications of both spontaneous Raman and SRS as novel imaging platforms to facilitate the drug discovery process.
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Affiliation(s)
- W. J. Tipping
- EaStCHEM School of Chemistry , The University of Edinburgh , Joseph Black Building , David Brewster Road , Edinburgh , EH9 3FJ , UK .
- Edinburgh Cancer Research Centre , Institute of Genetics and Molecular Medicine , The University of Edinburgh , Crewe Road South , Edinburgh , EH4 2XR , UK
| | - M. Lee
- Edinburgh Cancer Research Centre , Institute of Genetics and Molecular Medicine , The University of Edinburgh , Crewe Road South , Edinburgh , EH4 2XR , UK
| | - A. Serrels
- Edinburgh Cancer Research Centre , Institute of Genetics and Molecular Medicine , The University of Edinburgh , Crewe Road South , Edinburgh , EH4 2XR , UK
| | - V. G. Brunton
- Edinburgh Cancer Research Centre , Institute of Genetics and Molecular Medicine , The University of Edinburgh , Crewe Road South , Edinburgh , EH4 2XR , UK
| | - A. N. Hulme
- EaStCHEM School of Chemistry , The University of Edinburgh , Joseph Black Building , David Brewster Road , Edinburgh , EH9 3FJ , UK .
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10
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Rasheed N, Khorasani AA, Cebral J, Mut F, Löhner R, Salvador-Morales C. Mechanisms Involved in the Formation of Biocompatible Lipid Polymeric Hollow Patchy Particles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:6639-6648. [PMID: 26057588 DOI: 10.1021/acs.langmuir.5b01551] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Patchy polymeric particles have anisotropic surface domains that can be remarkably useful in diverse medical and industrial fields because of their ability to simultaneously present two different surface chemistries on the same construct. In this article, we report the mechanisms involved in the formation of novel lipid-polymeric hollow patchy particles during their synthesis. By cross-sectioning the patchy particles, we found that a phase segregation phenomenon occurs between the core, shell, and patch. Importantly, we found that the shear stress that the polymer blend undergoes during the particle synthesis is the most important parameter for the formation of these patchy particles. In addition, we found that the interplay of solvent-solvent, polymer-solvent, and polymer-polymer-solvent interactions generates particles with different surface morphologies. Understanding the mechanisms involved in the formation of patchy particles allows us to have a better control on their physicochemical properties. Therefore, these fundamental studies are critical to achieve batch control and scalability, which are essential aspects that must be addressed in any type of particle synthesis to be safely used in medicine.
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Affiliation(s)
- Nashaat Rasheed
- †Bioengineering Department, ‡Krasnow Institute for Advanced Study, §Department of Chemistry and Biochemistry, and ∥Center for Computational Fluid Dynamics, College of Sciences, George Mason University, Fairfax, Virginia 22030, United States
| | - Ali A Khorasani
- †Bioengineering Department, ‡Krasnow Institute for Advanced Study, §Department of Chemistry and Biochemistry, and ∥Center for Computational Fluid Dynamics, College of Sciences, George Mason University, Fairfax, Virginia 22030, United States
| | - Juan Cebral
- †Bioengineering Department, ‡Krasnow Institute for Advanced Study, §Department of Chemistry and Biochemistry, and ∥Center for Computational Fluid Dynamics, College of Sciences, George Mason University, Fairfax, Virginia 22030, United States
| | - Fernando Mut
- †Bioengineering Department, ‡Krasnow Institute for Advanced Study, §Department of Chemistry and Biochemistry, and ∥Center for Computational Fluid Dynamics, College of Sciences, George Mason University, Fairfax, Virginia 22030, United States
| | - Rainald Löhner
- †Bioengineering Department, ‡Krasnow Institute for Advanced Study, §Department of Chemistry and Biochemistry, and ∥Center for Computational Fluid Dynamics, College of Sciences, George Mason University, Fairfax, Virginia 22030, United States
| | - Carolina Salvador-Morales
- †Bioengineering Department, ‡Krasnow Institute for Advanced Study, §Department of Chemistry and Biochemistry, and ∥Center for Computational Fluid Dynamics, College of Sciences, George Mason University, Fairfax, Virginia 22030, United States
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11
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Sanoria A, Ulbricht D, Schuster T, Brüll R. Monitoring crosslinking inhomogeneities in ethylene vinyl acetate photovoltaic encapsulants using Raman microscopy. RSC Adv 2015. [DOI: 10.1039/c5ra18988h] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Raman microscopy has been used to develop a method to analyze and spatially profile the variation in crosslinking in EVA used for encapsulation of PV modules.
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Affiliation(s)
- Abhishek Sanoria
- Fraunhofer Institute for Structural Durability and System Reliability
- Division Plastics
- Group Material Analytics
- 64289 Darmstadt
- Germany
| | | | - Tobias Schuster
- Fraunhofer Institute for Structural Durability and System Reliability
- Division Plastics
- Group Material Analytics
- 64289 Darmstadt
- Germany
| | - Robert Brüll
- Fraunhofer Institute for Structural Durability and System Reliability
- Division Plastics
- Group Material Analytics
- 64289 Darmstadt
- Germany
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12
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Ueda M, Uesaka A, Kimura S. Selective disruption of each part of Janus molecular assemblies by lateral diffusion of stimuli-responsive amphiphilic peptides. Chem Commun (Camb) 2015; 51:1601-4. [DOI: 10.1039/c4cc08686d] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Stimuli-responsive Janus-type assemblies with a round-bottom flask shape are prepared from amphiphilic helical peptides using the patchwork self-assembly technique.
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Affiliation(s)
- Motoki Ueda
- Clinical Division of Diagnostic Radiology
- Kyoto University Hospital
- Kyoto
- Japan
| | - Akihiro Uesaka
- Department of Material Chemistry
- Graduate School of Engineering
- Kyoto University Kyoto-Daigaku-Katsura
- Kyoto
- Japan
| | - Shunsaku Kimura
- Department of Material Chemistry
- Graduate School of Engineering
- Kyoto University Kyoto-Daigaku-Katsura
- Kyoto
- Japan
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13
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Khorasani AA, Weaver JL, Salvador-Morales C. Closing the gap: accelerating the translational process in nanomedicine by proposing standardized characterization techniques. Int J Nanomedicine 2014; 9:5729-51. [PMID: 25525356 PMCID: PMC4268909 DOI: 10.2147/ijn.s72479] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
On the cusp of widespread permeation of nanomedicine, academia, industry, and government have invested substantial financial resources in developing new ways to better treat diseases. Materials have unique physical and chemical properties at the nanoscale compared with their bulk or small-molecule analogs. These unique properties have been greatly advantageous in providing innovative solutions for medical treatments at the bench level. However, nanomedicine research has not yet fully permeated the clinical setting because of several limitations. Among these limitations are the lack of universal standards for characterizing nanomaterials and the limited knowledge that we possess regarding the interactions between nanomaterials and biological entities such as proteins. In this review, we report on recent developments in the characterization of nanomaterials as well as the newest information about the interactions between nanomaterials and proteins in the human body. We propose a standard set of techniques for universal characterization of nanomaterials. We also address relevant regulatory issues involved in the translational process for the development of drug molecules and drug delivery systems. Adherence and refinement of a universal standard in nanomaterial characterization as well as the acquisition of a deeper understanding of nanomaterials and proteins will likely accelerate the use of nanomedicine in common practice to a great extent.
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Affiliation(s)
- Ali A Khorasani
- Department of Chemistry and Biochemistry, George Mason University, Fairfax, VA, USA ; Bioengineering Department, George Mason University, Fairfax, VA, USA ; Krasnow Institute for Advanced Study, George Mason University, Fairfax, VA, USA
| | - James L Weaver
- Division of Applied Regulatory Science, Center for Drug Evaluation and Research, Food and Drug Administration, Silver Spring, MD, USA
| | - Carolina Salvador-Morales
- Bioengineering Department, George Mason University, Fairfax, VA, USA ; Krasnow Institute for Advanced Study, George Mason University, Fairfax, VA, USA
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14
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Gurr PA, Scofield JMP, Kim J, Fu Q, Kentish SE, Qiao GG. Polyimide polydimethylsiloxane triblock copolymers for thin film composite gas separation membranes. ACTA ACUST UNITED AC 2014. [DOI: 10.1002/pola.27401] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Paul A. Gurr
- Cooperative Research Centre for Greenhouse Gas Technologies, Department of Chemical and Biomolecular Engineering; The University of Melbourne; Victoria 3010 Australia
- Polymer Science Group, Department of Chemical and Biomolecular Engineering; The University of Melbourne; Victoria 3010 Australia
| | - Joel M. P. Scofield
- Cooperative Research Centre for Greenhouse Gas Technologies, Department of Chemical and Biomolecular Engineering; The University of Melbourne; Victoria 3010 Australia
- Polymer Science Group, Department of Chemical and Biomolecular Engineering; The University of Melbourne; Victoria 3010 Australia
| | - Jinguk Kim
- Cooperative Research Centre for Greenhouse Gas Technologies, Department of Chemical and Biomolecular Engineering; The University of Melbourne; Victoria 3010 Australia
- Polymer Science Group, Department of Chemical and Biomolecular Engineering; The University of Melbourne; Victoria 3010 Australia
| | - Qiang Fu
- Cooperative Research Centre for Greenhouse Gas Technologies, Department of Chemical and Biomolecular Engineering; The University of Melbourne; Victoria 3010 Australia
- Polymer Science Group, Department of Chemical and Biomolecular Engineering; The University of Melbourne; Victoria 3010 Australia
| | - Sandra E. Kentish
- Cooperative Research Centre for Greenhouse Gas Technologies, Department of Chemical and Biomolecular Engineering; The University of Melbourne; Victoria 3010 Australia
| | - Greg G. Qiao
- Cooperative Research Centre for Greenhouse Gas Technologies, Department of Chemical and Biomolecular Engineering; The University of Melbourne; Victoria 3010 Australia
- Polymer Science Group, Department of Chemical and Biomolecular Engineering; The University of Melbourne; Victoria 3010 Australia
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15
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Park TH, Lee KJ, Hwang S, Yoon J, Woell C, Lahann J. Spatioselective growth of metal-organic framework nanocrystals on compositionally anisotropic polymer particles. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2014; 26:2883-2888. [PMID: 24677551 DOI: 10.1002/adma.201305461] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2013] [Revised: 12/04/2013] [Indexed: 06/03/2023]
Abstract
Selective growth of metal organic framework materials on the surface of compartmentalized polymer microparticles is achieved by electro-hydrodynamic co-jetting, selective surface modification, and anisotropic crystal growth.
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Affiliation(s)
- Tae-Hong Park
- Department of Chemical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA
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Costa AMS, Alatorre-Meda M, Oliveira NM, Mano JF. Biocompatible polymeric microparticles produced by a simple biomimetic approach. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:4535-4539. [PMID: 24738655 DOI: 10.1021/la500286v] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The use of superhydrophobic surfaces to produce polymeric particles proves to be biologically friendly since it entails the pipetting and subsequent cross-linking of polymeric solutions under mild experimental conditions. Moreover, it renders encapsulation efficiencies of ∼100%. However, the obtained particles are 1 to 2 mm in size, hindering to a large extent their application in clinical trials. Improving on this technique, we propose the fabrication of polymeric microparticles by spraying a hydrogel precursor over superhydrophobic surfaces followed by photo-cross-linking. The particles were produced from methacrylamide chitosan (MA-CH) and characterized in terms of their size and morphology. As demonstrated by optical and fluorescence microscopy, spraying followed by photo-cross-linking led, for the first time, to the production of spherical particles with diameters on the order of micrometers, nominal sizes not attainable by pipetting. Particles such as these are suitable for medical applications such as drug delivery and tissue engineering.
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Affiliation(s)
- Ana M S Costa
- 3B's Research Group-Biomaterials, Biodegradables and Biomimetics, University of Minho , Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Zona Industrial da Gandra, S. Claudio do Barco, 4806-909 Caldas das Taipas, Guimarães, Portugal and ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal
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Rahmani S, Saha S, Durmaz H, Donini A, Misra AC, Yoon J, Lahann J. Chemically orthogonal three-patch microparticles. Angew Chem Int Ed Engl 2014; 53:2332-8. [PMID: 24574030 PMCID: PMC5550901 DOI: 10.1002/anie.201310727] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2013] [Indexed: 12/24/2022]
Abstract
Compared to two-dimensional substrates, only a few methodologies exist for the spatially controlled decoration of three-dimensional objects, such as microparticles. Combining electrohydrodynamic co-jetting with synthetic polymer chemistry, we were able to create two- and three-patch microparticles displaying chemically orthogonal anchor groups on three distinct surface patches of the same particle. This approach takes advantage of a combination of novel chemically orthogonal polylactide-based polymers and their processing by electrohydrodynamic co-jetting to yield unprecedented multifunctional microparticles. Several micropatterned particles were fabricated displaying orthogonal click functionalities. Specifically, we demonstrate novel two- and three-patch particles. Multi-patch particles are highly sought after for their potential to present multiple distinct ligands in a directional manner. This work clearly establishes a viable route towards orthogonal reaction strategies on multivalent micropatterned particles.
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Affiliation(s)
- Sahar Rahmani
- Department of Biomedical Engineering, Chemical Engineering, Macromolecular Science and Engineering, Material Science and Engineering, University of Michigan, Ann Arbor, 48109 (USA) http://www.umich.edu/∼lahannj/index.htm; Institute of Functional Interfaces, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen (Germany)
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18
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Rahmani S, Saha S, Durmaz H, Donini A, Misra AC, Yoon J, Lahann J. Chemically Orthogonal Three-Patch Microparticles. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201310727] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Jung CW, Jalani G, Ko J, Choo J, Lim DW. Synthesis, characterization, and directional binding of anisotropic biohybrid microparticles for multiplexed biosensing. Macromol Rapid Commun 2013; 35:56-65. [PMID: 24395747 DOI: 10.1002/marc.201300652] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2013] [Revised: 10/13/2013] [Indexed: 12/31/2022]
Abstract
Anisotropic microarchitectures with different physicochemical properties have been developed as advanced materials for challenging industrial and biomedical applications including switchable displays, multiplexed biosensors and bioassays, spatially-controlled drug delivery systems, and tissue engineering scaffolds. In this study, anisotropic biohybrid microparticles (MPs) spatio-selectively conjugated with two different antibodies (Abs) are first developed for fluorescence-based, multiplexed sensing of biological molecules. Poly(acrylamide-co-acrylic acid) is chemically modified with maleimide- or acetylene groups to introduce different targeting biological moieties into each compartment of anisotropic MPs. Modified polymer solutions containing two different fluorescent dyes are separately used for electrohydrodynamic co-jetting with side-by-side needle geometry. The anisotropic MPs are chemically stabilized by thermal imidization, followed by bioconjugation of two different sets of polyclonal Abs with two individual compartments via maleimide-thiol coupling reaction and Huisgen 1,3-dipolar cycloaddition. Finally, two compartments of the anisotropic biohybrid MPs are spatio-selectively associated with the respective monoclonal Ab-immobilized substrate in the presence of the antigen by sandwich-type immunocomplex formation, resulting in their ordered orientation due to the spatio-specific molecular interaction, as confirmed by confocal laser scanning microscopy. In conclusion, anisotropic biohybrid MPs capable of directional binding have great potential as a new fluorescence-based multiplexing biosensing system.
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Affiliation(s)
- Chan Woo Jung
- Department of Bionano Engineering, College of Engineering Sciences, Hanyang University, ERICA Campus, Ansan, 426-791, Korea
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20
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Rahmani S, Park TH, Dishman AF, Lahann J. Multimodal delivery of irinotecan from microparticles with two distinct compartments. J Control Release 2013; 172:239-245. [PMID: 23973814 DOI: 10.1016/j.jconrel.2013.08.017] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2013] [Revised: 08/12/2013] [Accepted: 08/13/2013] [Indexed: 12/13/2022]
Abstract
In the last several decades, research in the field of drug delivery has been challenged with the fabrication of carrier systems engineered to deliver therapeutics to the target site with sustained and controlled release kinetics. Herein, we report the fabrication of microparticles composed of two distinct compartments: i) one compartment containing a pH responsive polymer, acetal-modified dextran, and PLGA (polylactide-co-glycolide), and ii) one compartment composed entirely of PLGA. We demonstrate the complete release of dextran from the microparticles during a 10-hour period in an acidic pH environment and the complete degradation of one compartment in less than 24h. This is in congruence with the stability of the same microparticles in neutral pH over the 24-hour period. Such microparticles can be used as pH responsive carrier systems for drug delivery applications where their cargo will only be released when the optimum pH window is reached. The feasibility of the microparticle system for such an application was confirmed by encapsulating a cancer therapeutic, irinotecan, in the compartment containing the acetal-modified dextran polymer and the pH dependent release over a 5-day period was studied. It was found that upon pH change to an acidic environment, over 50% of the drug was first released at a rapid rate for 10h, similar to that observed for the dextran release, before continuing at a more controlled rate for 4 days. As such, these microparticles can play an important role in the fabrication of novel drug delivery systems due to the selective, controlled, and pH responsive release of their encapsulated therapeutics.
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Affiliation(s)
- Sahar Rahmani
- Department of Biomedical Engineering, University of Michigan, Ann Arbor 48109, USA; Biointerfaces Institute, University of Michigan, Ann Arbor 48109, USA
| | - Tae-Hong Park
- Department of Chemical Engineering, University of Michigan, Ann Arbor 48109, USA
| | - Acacia Frances Dishman
- Department of Biophysics, University of Michigan, Ann Arbor 48109, USA; Biointerfaces Institute, University of Michigan, Ann Arbor 48109, USA
| | - Joerg Lahann
- Department of Biomedical Engineering, University of Michigan, Ann Arbor 48109, USA; Department of Chemical Engineering, University of Michigan, Ann Arbor 48109, USA; Biointerfaces Institute, University of Michigan, Ann Arbor 48109, USA.
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21
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Shah AA, Schultz B, Kohlstedt KL, Glotzer SC, Solomon MJ. Synthesis, assembly, and image analysis of spheroidal patchy particles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:4688-4696. [PMID: 23510525 DOI: 10.1021/la400317t] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
We report a method to synthesize and image Janus spheroid and "kayak" shaped patchy particles that combine both shape and interaction anisotropy. These particles are fabricated by sequentially combining evaporative deposition of chrome and gold with the uniaxial deformation of the colloidal particles into spheroids. We introduce combined reflection and fluorescence confocal microscopy to image each component of the patchy particle. Image analysis algorithms that resolve patch orientation from these image volumes are described and used to characterize self-assembly behavior. Assemblies of the Janus spheroid and kayak particles produced at different salt concentrations demonstrate the functional nature of the patch-to-patch interactions between the particles. Selective gold-to-gold patch bonding is observed at intermediate salt concentrations, while higher salt concentrations yield gel-like structures with nonselective patch-to-patch bonding. At intermediate salt concentrations, differences in the orientational order of the assemblies indicate that both the preferential gold-to-gold patch bonding and the particles' shape anisotropy influence the self-assembled structure.
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Affiliation(s)
- Aayush A Shah
- Macromolecular Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
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Salvador-Morales C, Valencia PM, Gao W, Karnik R, Farokhzad OC. Spontaneous formation of heterogeneous patches on polymer-lipid core-shell particle surfaces during self-assembly. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2013; 9:511-7. [PMID: 23109494 PMCID: PMC4157734 DOI: 10.1002/smll.201201499] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2012] [Revised: 08/29/2012] [Indexed: 05/27/2023]
Abstract
Spontaneous formation of heterogeneous patches on the surface of lipid-based nanoparticles (NPs) and microparticles (MPs) due to the segregation of two different functional groups. Patch formation is observed when tracing the functional groups with quantum dots, gold nanoparticles, and fluorescent dyes. This discovery could have important implications for the future design of self-assembled NPs and MPs for different biomedical applications.
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Affiliation(s)
- Carolina Salvador-Morales
- Laboratory of Nanomedicine and Biomaterials, Department of Anesthesiology, Brigham and Women’s Hospital-Harvard Medical School, Boston, MA 02115, USA
| | - Pedro M. Valencia
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Weiwei Gao
- Laboratory of Nanomedicine and Biomaterials, Department of Anesthesiology, Brigham and Women’s Hospital-Harvard Medical School, Boston, MA 02115, USA
| | - Rohit Karnik
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Omid C. Farokhzad
- Laboratory of Nanomedicine and Biomaterials, Department of Anesthesiology, Brigham and Women’s Hospital-Harvard Medical School, Boston, MA 02115, USA
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Park TH, Lahann* J. Janus Particles with Distinct Compartments via Electrohydrodynamic Co-jetting. JANUS PARTICLE SYNTHESIS, SELF-ASSEMBLY AND APPLICATIONS 2012. [DOI: 10.1039/9781849735100-00054] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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Kaufmann T, Gokmen MT, Rinnen S, Arlinghaus HF, Du Prez F, Ravoo BJ. Bifunctional Janus beads made by “sandwich” microcontact printing using click chemistry. JOURNAL OF MATERIALS CHEMISTRY 2012; 22:6190. [DOI: 10.1039/c2jm16807c] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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Saha S, Copic D, Bhaskar S, Clay N, Donini A, Hart AJ, Lahann J. Chemically Controlled Bending of Compositionally Anisotropic Microcylinders. Angew Chem Int Ed Engl 2011; 51:660-5. [DOI: 10.1002/anie.201105387] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2011] [Revised: 10/12/2011] [Indexed: 11/11/2022]
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Saha S, Copic D, Bhaskar S, Clay N, Donini A, Hart AJ, Lahann J. Chemically Controlled Bending of Compositionally Anisotropic Microcylinders. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201105387] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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27
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Yoon J, Lee KJ, Lahann J. Multifunctional polymer particles with distinct compartments. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c1jm10673b] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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