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Lochab V, Prakash S. Combined electrokinetic and shear flows control colloidal particle distribution across microchannel cross-sections. SOFT MATTER 2021; 17:611-620. [PMID: 33201951 PMCID: PMC7855569 DOI: 10.1039/d0sm01646b] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Recent experimental observations on combined electrokinetic and shear flows of colloidal suspensions in rectangular cross-section microfluidic channels have shown unusual cross-stream colloidal particle migration and dynamic assembly. Although a new electrophoresis-induced lift force has been postulated to cause the lateral migration of colloidal particles, little is known about how fluid properties and flow conditions impact this force and therefore subsequent colloidal particle migration. Furthermore, no experimental quantification of this electrophoresis-induced lift force is available. We report several key advances by demonstrating that the kinematic viscosity of the fluid can be used to modulate the spatial distribution of particles over the entire microchannel cross-section, with suppression of the colloidal particle migration observed with increase in fluid kinematic viscosity. Colloidal particle migration of ∼10 μm from not only the top and bottom microchannel walls but also from the side walls is shown with the corresponding electrophoresis-induced lift force of up to ∼30 fN. The breadth of flow conditions tested capture the channel Reynolds number in the 0.1-1.1 range, with inertial migration of colloidal particles shown in flow regimes where the migration was previously thought to be ineffective, if not for the electrophoresis-induced lift force. The ability of the electrophoresis-induced lift force to migrate colloidal particles across the entire microchannel cross-section establishes a new paradigm for three-dimensional control of colloidal particles within confined microchannels.
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Affiliation(s)
- Varun Lochab
- Department of Mechanical and Aerospace Engineering, The Ohio State University, Columbus, OH 43210, USA.
| | - Shaurya Prakash
- Department of Mechanical and Aerospace Engineering, The Ohio State University, Columbus, OH 43210, USA.
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2
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Xiang J, Liu D, Chen J, Hu D, Song B. Design and synthesis of novel 1,3,4-oxadiazole sulfone compounds containing 3,4-dichloroisothiazolylamide moiety and evaluation of rice bacterial activity. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2020; 170:104695. [PMID: 32980058 DOI: 10.1016/j.pestbp.2020.104695] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 08/19/2020] [Accepted: 08/19/2020] [Indexed: 06/11/2023]
Abstract
In this study, thirty 1,3,4-oxadiazole sulfone derivatives containing 3,4-dichloroisothiazolamide moiety were designed and synthesized, and their antibacterial activities were evaluated. Bioassay results showed that some compounds exhibited excellent antibacterial activities against Xanthomonas oryzae pv. oryzae (Xoo) and Xanthomonas oryzae pv. oryzicola (Xoc) in vitro and in vivo. Notably, the EC50 values of compounds 2 and 3 against Xoo were 0.79 and 0.85 μg/mL, respectively, which were superior to those of the control agents isotianil, bismerthiazol, and thiodiazole copper. In addition, in vivo antibacterial activities revealed that the compound 2 at 50 μg/mL possessed protective and curative activities of 43.99% and 41.06% against Xoo, respectively, which were better than positive controls. Furthermore, the preliminary mechanism study disclosed that compound 2 exhibited effective antibacterial activity against Xoo by inhibiting the formation of extracellular polysaccharides from Xoo, increasing cell permeability, and changing the shape of cells. This study suggested that 1,3,4-oxadiazole sulfone derivatives containing 3,4-dichloroisothiazolamide moiety displayed excellent antibacterial activity and could be further explored and developed as commercial pesticides.
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Affiliation(s)
- Jie Xiang
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Research and Development Center for Fine Chemicals, Guizhou University, Huaxi District, Guiyang 550025, China
| | - Dengyue Liu
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Research and Development Center for Fine Chemicals, Guizhou University, Huaxi District, Guiyang 550025, China
| | - Jixiang Chen
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Research and Development Center for Fine Chemicals, Guizhou University, Huaxi District, Guiyang 550025, China
| | - Deyu Hu
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Research and Development Center for Fine Chemicals, Guizhou University, Huaxi District, Guiyang 550025, China
| | - Baoan Song
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Research and Development Center for Fine Chemicals, Guizhou University, Huaxi District, Guiyang 550025, China.
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3
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van Ravensteijn BGP, Voets IK, Kegel WK, Eelkema R. Out-of-Equilibrium Colloidal Assembly Driven by Chemical Reaction Networks. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:10639-10656. [PMID: 32787015 PMCID: PMC7497707 DOI: 10.1021/acs.langmuir.0c01763] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 08/08/2020] [Indexed: 05/20/2023]
Abstract
Transient assembled structures play an indispensable role in a wide variety of processes fundamental to living organisms including cellular transport, cell motility, and proliferation. Typically, the formation of these transient structures is driven by the consumption of molecular fuels via dissipative reaction networks. In these networks, building blocks are converted from inactive precursor states to active (assembling) states by (a set of) irreversible chemical reactions. Since the activated state is intrinsically unstable and can be maintained only in the presence of sufficient fuel, fuel depletion results in the spontaneous disintegration of the formed superstructures. Consequently, the properties and behavior of these assembled structures are governed by the kinetics of fuel consumption rather than by their thermodynamic stability. This fuel dependency endows biological systems with unprecedented spatiotemporal adaptability and inherent self-healing capabilities. Fascinated by these unique material characteristics, coupling the assembly behavior to molecular fuel or light-driven reaction networks was recently implemented in synthetic (supra)molecular systems. In this invited feature article, we discuss recent studies demonstrating that dissipative assembly is not limited to the molecular world but can also be translated to building blocks of colloidal dimensions. We highlight crucial guiding principles for the successful design of dissipative colloidal systems and illustrate these with the current state of the art. Finally, we present our vision on the future of the field and how marrying nonequilibrium self-assembly with the functional properties associated with colloidal building blocks presents a promising route for the development of next-generation materials.
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Affiliation(s)
- Bas G. P. van Ravensteijn
- Institute
for Complex Molecular Systems, Department of Chemical Engineering
and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands
| | - Ilja K. Voets
- Institute
for Complex Molecular Systems, Department of Chemical Engineering
and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands
| | - Willem K. Kegel
- Van
’t Hoff Laboratory for Physical and Colloid Chemistry, Debye
Institute for NanoMaterials Science, Utrecht
University, 3584 CH Utrecht, The Netherlands
| | - Rienk Eelkema
- Department
of Chemical Engineering, Delft University
of Technology, Van der Maasweg 9, 2629 HZ Delft, The Netherlands
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Feeney MJ, Thomas SW. Combining Top-Down and Bottom-Up with Photodegradable Layer-by-Layer Films. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:13791-13804. [PMID: 31487186 DOI: 10.1021/acs.langmuir.9b02005] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Layer-by-layer (LbL) self-assembly of polymer coatings is a bottom-up fabrication technique with broad applicability across a wide range of materials and applications that require control over interfacial properties. While most LbL coatings are chemically uniform in directions both tangent and perpendicular to their substrate, control over the properties of surface coatings as a function of space can enhance their function. To contribute to this rapidly advancing field, our group has focused on the top-down spatiotemporal control possible with photochemically reactive LbL coatings, harnessed through charge-shifting polyelectrolytes enabled by photocleavable ester pendants. The photolysis of the photocleavable esters degrades LbL films containing these polyelectrolytes. The chemical structures of the photocleavable groups dictate the wavelengths responsible for disrupting these coatings, ranging from ultraviolet to near-infrared in our work. In addition, spatially segregating reactive groups into "compartments" within LbL films has enabled us to fabricate reactive free-standing polymer films and multiheight photopatterned coatings. Overall, by combining bottom-up and top-down approaches, photoreactive LbL films enable precise control over the interfacial properties of polymer and composite coatings.
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Affiliation(s)
- Matthew J Feeney
- Department of Chemistry , Tufts University , 62 Talbot Avenue , Medford , Massachusetts 02155 , United States
| | - Samuel W Thomas
- Department of Chemistry , Tufts University , 62 Talbot Avenue , Medford , Massachusetts 02155 , United States
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Goel M, Singh A, Bhola A, Gupta S. Size-Tunable Assembly of Gold Nanoparticles Using Competitive AC Electrokinetics. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:8015-8024. [PMID: 30879298 DOI: 10.1021/acs.langmuir.8b03963] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Alternating current (AC) electrokinetics is a facile way of patterning colloidal particles into advanced structures. We demonstrate the combined use of AC dielectrophoresis (AC-DEP) and AC electrohydrodynamics (AC-EHD) in a microwell electrode geometry for size-tunable assembly of gold nanoparticles (AuNPs) into one-dimensional microwires and two-dimensional films. The AC-DEP force scales with both particle size and field frequency, whereas the AC-EHD force depends only on the field frequency. So, a critical particle diameter ( dc) exists, below which the EHD phenomenon becomes more important and beyond which the DEP force is dominating. We performed theoretical and experimental studies to determine " dc" and how it gets affected by operating parameters like field frequency, voltage, particle number, electrolyte concentration, electrode size, and geometry. Our results show that the morphologies of the colloidal structures transition from films to microwires as the NP diameters vary from nanometers (< dc) to microns (> dc), and no assembly takes place at intermediate sizes (∼ dc). While the film formation is governed purely by surface EHD flows, microwire synthesis is a result of EHD-assisted DEP phenomenon. Also, a minimum particle number, a low salt concentration, and an optimum frequency range is required to initiate assembly.
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Affiliation(s)
- Meenal Goel
- Department of Chemical Engineering , Indian Institute of Technology Delhi (IITD) , New Delhi 110016 , India
| | - Akshay Singh
- Department of Chemical Engineering , Indian Institute of Technology Delhi (IITD) , New Delhi 110016 , India
| | - Ashwin Bhola
- Department of Chemical Engineering , Indian Institute of Technology Delhi (IITD) , New Delhi 110016 , India
| | - Shalini Gupta
- Department of Chemical Engineering , Indian Institute of Technology Delhi (IITD) , New Delhi 110016 , India
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Vialetto J, Anyfantakis M, Rudiuk S, Morel M, Baigl D. Photoswitchable Dissipative Two‐Dimensional Colloidal Crystals. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201904093] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jacopo Vialetto
- PASTEURDepartment of ChemistryÉcole Normale SupérieurePSL UniversitySorbonne UniversitéCNRS 75005 Paris France
| | - Manos Anyfantakis
- PASTEURDepartment of ChemistryÉcole Normale SupérieurePSL UniversitySorbonne UniversitéCNRS 75005 Paris France
- Physics & Materials Science Research UnitUniversity of Luxembourg 162a Avenue de la Faiencerie Luxembourg 1511 Luxembourg
| | - Sergii Rudiuk
- PASTEURDepartment of ChemistryÉcole Normale SupérieurePSL UniversitySorbonne UniversitéCNRS 75005 Paris France
| | - Mathieu Morel
- PASTEURDepartment of ChemistryÉcole Normale SupérieurePSL UniversitySorbonne UniversitéCNRS 75005 Paris France
| | - Damien Baigl
- PASTEURDepartment of ChemistryÉcole Normale SupérieurePSL UniversitySorbonne UniversitéCNRS 75005 Paris France
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7
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Vialetto J, Anyfantakis M, Rudiuk S, Morel M, Baigl D. Photoswitchable Dissipative Two-Dimensional Colloidal Crystals. Angew Chem Int Ed Engl 2019; 58:9145-9149. [PMID: 31041837 DOI: 10.1002/anie.201904093] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Indexed: 11/09/2022]
Abstract
Control over particle interactions and organization at fluid interfaces is of great importance both for fundamental studies and practical applications. Rendering these systems stimulus-responsive is thus a desired challenge both for investigating dynamic phenomena and realizing reconfigurable materials. Here, we describe the first reversible photocontrol of two-dimensional colloidal crystallization at the air/water interface, where millimeter-sized assemblies of microparticles can be actuated through the dynamic adsorption/desorption behavior of a photosensitive surfactant added to the suspension. This allows us to dynamically switch the particle organization between a highly crystalline (under light) and a disordered (in the dark) phase with a fast response time (crystallization in ≈10 s, disassembly in ≈1 min). These results evidence a new kind of dissipative system where the crystalline state can be maintained only upon energy supply.
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Affiliation(s)
- Jacopo Vialetto
- PASTEUR, Department of Chemistry, École Normale Supérieure, PSL University, Sorbonne Université, CNRS, 75005, Paris, France
| | - Manos Anyfantakis
- PASTEUR, Department of Chemistry, École Normale Supérieure, PSL University, Sorbonne Université, CNRS, 75005, Paris, France.,Physics & Materials Science Research Unit, University of Luxembourg, 162a Avenue de la Faiencerie, Luxembourg, 1511, Luxembourg
| | - Sergii Rudiuk
- PASTEUR, Department of Chemistry, École Normale Supérieure, PSL University, Sorbonne Université, CNRS, 75005, Paris, France
| | - Mathieu Morel
- PASTEUR, Department of Chemistry, École Normale Supérieure, PSL University, Sorbonne Université, CNRS, 75005, Paris, France
| | - Damien Baigl
- PASTEUR, Department of Chemistry, École Normale Supérieure, PSL University, Sorbonne Université, CNRS, 75005, Paris, France
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Xiang J, Ge F, Yu B, Yan Q, Shi F, Zhao Y. Nanocomplexes of Photolabile Polyelectrolyte and Upconversion Nanoparticles for Near-Infrared Light-Triggered Payload Release. ACS APPLIED MATERIALS & INTERFACES 2018; 10:20790-20800. [PMID: 29847100 DOI: 10.1021/acsami.8b05063] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
A new approach to encapsulating charged cargo molecules into a nanovector and subsequently using near-infrared (NIR) light to trigger the release is demonstrated. NIR light-responsive nanovector was prepared through electrostatic interaction-driven complexation between negatively charged silica-coated upconversion nanoparticles (UCNP@silica, 87 nm hydrodynamic diameter, polydispersity index ∼0.05) and a positively charged UV-labile polyelectrolyte bearing pendants of poly(ethylene glycol) and o-nitrobenzyl side groups; whereas charged fluorescein (FLU) was loaded through a co-complexation process. By controlling the amount of polyelectrolyte, UCNP@silica can be covered by the polymer, whereas remaining dispersed in aqueous solution. Under 980 nm laser excitation, UV light emitted by UCNP is absorbed by photolytic side groups within polyelectrolyte, which results in cleavage of o-nitrobenzyl groups and formation of carboxylic acid groups. Such NIR light-induced partial reversal of positive charge to negative charge on the polyelectrolyte layer disrupts the equilibrium among UCNP@silica, polyelectrolyte, and FLU and, consequently, leads to release of FLU molecules.
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Affiliation(s)
- Jun Xiang
- Département de Chimie , Université de Sherbrooke , Sherbrooke , Québec J1K 2R1 , Canada
| | - Feijie Ge
- Département de Chimie , Université de Sherbrooke , Sherbrooke , Québec J1K 2R1 , Canada
| | - Bing Yu
- Département de Chimie , Université de Sherbrooke , Sherbrooke , Québec J1K 2R1 , Canada
| | - Qiang Yan
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science , Fudan University , Shanghai 200433 , China
| | - Feng Shi
- School of Materials Science and Engineering , Shaanxi Normal University , Xi'an 710119 , China
| | - Yue Zhao
- Département de Chimie , Université de Sherbrooke , Sherbrooke , Québec J1K 2R1 , Canada
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9
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Study of the Paternò–Büchi type photolabile protecting group and application to various acids. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.09.065] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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10
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Menon S, Ongungal RM, Das S. Vesicle-to-Rod Transition of Polymer Aggregates upon Irradiation. MACROMOL CHEM PHYS 2015. [DOI: 10.1002/macp.201500262] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Sajith Menon
- Government Polytechnic College; Kodumbu P. O. Palakkad 678 551 Kerala India
| | - Rahul M. Ongungal
- Photosciences and Photonics Section; Chemical Sciences and Technology Division; National Institute for Interdisciplinary Science and Technology (NIIST); CSIR; Trivandrum 695 019 Kerala India
- Academy of Scientific and Innovative Research (AcSIR); New Delhi 110 001 India
| | - Suresh Das
- Photosciences and Photonics Section; Chemical Sciences and Technology Division; National Institute for Interdisciplinary Science and Technology (NIIST); CSIR; Trivandrum 695 019 Kerala India
- Academy of Scientific and Innovative Research (AcSIR); New Delhi 110 001 India
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11
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Chen QB, You YZ. Multistimuli-responsive Hydrogel Particles Prepared via the Self-assembly of PEG-based Hyperbranched Polymers. CHEM LETT 2015. [DOI: 10.1246/cl.150064] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Qian-Bao Chen
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China
| | - Ye-Zi You
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China
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12
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Yeh YC, Rana S, Mout R, Yan B, Alfonso FS, Rotello VM. Supramolecular tailoring of protein-nanoparticle interactions using cucurbituril mediators. Chem Commun (Camb) 2015; 50:5565-8. [PMID: 24728346 DOI: 10.1039/c4cc01257g] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Supramolecular modification of nanoparticle surfaces through threading of cucurbit[7]uril (CB[7]) onto surface ligands is used to regulate protein-nanoparticle interactions.
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Affiliation(s)
- Yi-Cheun Yeh
- Department of Chemistry, University of Massachusetts at Amherst, 710 North Pleasant Street, Amherst, MA 01003, USA.
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13
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Saxena S, Lyon LA. Influence of microgel packing on raspberry-like heteroaggregate assembly. J Colloid Interface Sci 2015; 442:39-48. [DOI: 10.1016/j.jcis.2014.11.033] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2014] [Revised: 11/14/2014] [Accepted: 11/14/2014] [Indexed: 11/16/2022]
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15
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Koylu D, Thapa M, Gumbley P, Thomas SW. Photochemical disruption of polyelectrolyte multilayers. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2012; 24:1451-1454. [PMID: 22311619 DOI: 10.1002/adma.201104865] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2011] [Indexed: 05/31/2023]
Abstract
Photoreactive polyelectrolyte multilayers (PEMs) that dissolve upon UV irradiation are described. Light-induced switching of the formal charge of a photoreactive polycation resulted in repulsive interlayer electrostatic forces, and caused the dissolution of PEM films. Combining both photoreactive and inert polycations in the same film yielded additional control over the light-induced change in film thickness.
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Affiliation(s)
- Damla Koylu
- Department of Chemistry, Tufts University, Medford, MA 02155, USA
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16
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Yang H, Zhou L, Wang P. Development of hydrophilic photolabile hydroxyl protecting groups. Photochem Photobiol Sci 2012; 11:514-7. [DOI: 10.1039/c1pp05281k] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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17
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Bogen O, Milosevic P, Daroszi H, Dreger M, Hecht S, Hucho F. Light-triggered conversion of non-ionic into ionic surfactants: towards chameleon detergents for 2-D gel electrophoresis. Photochem Photobiol Sci 2012; 11:497-9. [DOI: 10.1039/c1pp05316g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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18
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Gumbley P, Koylu D, Thomas SW. Photoresponsive Polymers Containing Nitrobenzyl Esters via Ring-Opening Metathesis Polymerization. Macromolecules 2011. [DOI: 10.1021/ma2015529] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Patricia Gumbley
- Department of Chemistry, Tufts University, 62 Talbot Avenue, Medford, Massachusetts 02155, United States
| | - Damla Koylu
- Department of Chemistry, Tufts University, 62 Talbot Avenue, Medford, Massachusetts 02155, United States
| | - Samuel W. Thomas
- Department of Chemistry, Tufts University, 62 Talbot Avenue, Medford, Massachusetts 02155, United States
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19
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Schinkovitz A, Kenfack GT, Levillain E, Dias M, Helesbeux JJ, Derbré S, Séraphin D, Richomme P. Free and immobilized matrix molecules: impairing ionization by quenching secondary ion formation in laser desorption MS. JOURNAL OF MASS SPECTROMETRY : JMS 2011; 46:884-890. [PMID: 21915952 DOI: 10.1002/jms.1965] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Within the last 25 years, matrix-assisted laser desorption ionization (MALDI) has become a powerful analytical tool in mass spectrometry (MS). While the method has been successfully applied to characterize large organic molecules such as proteins, sugars and polymers, its utilization for small molecules (≤ 600 Da) is significantly impaired by the coformation of matrix ions. Reducing or eliminating matrix-related signals has been subject of many studies. Some of which propose the enhancement of so-called matrix suppression effects, while others suggest the replacement of matrix molecules by materials such as microporous silicon. Alternatively, the immobilization of matrix molecules by utilizing them as self-assembled monolayers (SAMs) has been discussed. In continuation of this research, the current manuscript focuses on the elucidation of ion formation processes occurring on the surface of light absorbing SAMs. Ion yields obtained by free and immobilized matrix molecules as well as those generated by matrix-free gold film-assisted laser desorption ionization (GF-LDI) were compared. Experiments showed that the formation of strong analyte signals essentially required the presence of free matrix molecules, while the immobilization of the latter severely impaired ionization. The observed effect inversely correlated with the surface coverage of SAMs determined by cyclic voltammetry (CV). Based on these findings, the MS signal generated on light absorbing SAMs could be used supplementary to CV for determining the surface coverage of light absorbing SAMs.
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Affiliation(s)
- Andreas Schinkovitz
- Université d'Angers, EA 921 SONAS, IFR 149 QUASAV, 16 bd Daviers, 49100, Angers, France.
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Saha K, Bajaj A, Duncan B, Rotello VM. Beauty is skin deep: a surface monolayer perspective on nanoparticle interactions with cells and bio-macromolecules. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2011; 7:1903-18. [PMID: 21671432 PMCID: PMC3516997 DOI: 10.1002/smll.201100478] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2011] [Indexed: 05/24/2023]
Abstract
Surface recognition of biosystems is a critical component in the development of novel biosensors and delivery vehicles, and for the therapeutic regulation of biological processes. Monolayer-protected nanoparticles present a highly versatile scaffold for selective interaction with bio-macromolecules and cells. Through the engineering of the monolayer surface, nanoparticles can be tailored for surface recognition of biomolecules and cells. This review highlights recent progress in nanoparticle-bio-macromolecule/cellular interactions, emphasizing the effect of the surface monolayer structure on the interactions with proteins, DNA, and cell surfaces. The extension of these tailored interactions to hybrid nanomaterials, biosensing platforms, and delivery vehicles is also discussed.
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Affiliation(s)
- Krishnendu Saha
- Department of Chemistry, University of Massachusetts Amherst 710 North Pleasant Street, Amherst, MA 01003
| | - Avinash Bajaj
- Department of Chemistry, University of Massachusetts Amherst 710 North Pleasant Street, Amherst, MA 01003
- Regional Centre for Biotechnology, 180 Udyog Vihar Phase 1, Gurgaon-122016, Haryana, India
| | - Bradley Duncan
- Department of Chemistry, University of Massachusetts Amherst 710 North Pleasant Street, Amherst, MA 01003
| | - Vincent M. Rotello
- Department of Chemistry, University of Massachusetts Amherst 710 North Pleasant Street, Amherst, MA 01003
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21
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Stimulus-Responsive Heteroaggregation of Colloidal Dispersions: Reversible Systems and Composite Materials. Polymers (Basel) 2011. [DOI: 10.3390/polym3031036] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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22
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Zhou L, Yang H, Wang P. Development of Trityl-Based Photolabile Hydroxyl Protecting Groups. J Org Chem 2011; 76:5873-81. [DOI: 10.1021/jo200692c] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Lei Zhou
- Department of Chemistry, University of Alabama at Birmingham, 901 14th Street South, Birmingham, Alabama 35294, United States
| | - Haishen Yang
- Department of Chemistry, University of Alabama at Birmingham, 901 14th Street South, Birmingham, Alabama 35294, United States
| | - Pengfei Wang
- Department of Chemistry, University of Alabama at Birmingham, 901 14th Street South, Birmingham, Alabama 35294, United States
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Yang H, Zhang X, Zhou L, Wang P. Development of a Photolabile Carbonyl-Protecting Group Toolbox. J Org Chem 2011; 76:2040-8. [DOI: 10.1021/jo102429g] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Haishen Yang
- Department of Chemistry, University of Alabama at Birmingham, 901 14th Street South, Birmingham, Alabama 35294, United States
| | - Xin Zhang
- Department of Chemistry, University of Alabama at Birmingham, 901 14th Street South, Birmingham, Alabama 35294, United States
| | - Lei Zhou
- Department of Chemistry, University of Alabama at Birmingham, 901 14th Street South, Birmingham, Alabama 35294, United States
| | - Pengfei Wang
- Department of Chemistry, University of Alabama at Birmingham, 901 14th Street South, Birmingham, Alabama 35294, United States
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24
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Xu Y, Hoshi Y, Ober CK. Photo-switchable polyelectrolyte brush for dual protein patterning. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c1jm12062j] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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25
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Li F, Josephson DP, Stein A. Colloidal Assembly: The Road from Particles to Colloidal Molecules and Crystals. Angew Chem Int Ed Engl 2010; 50:360-88. [PMID: 21038335 DOI: 10.1002/anie.201001451] [Citation(s) in RCA: 467] [Impact Index Per Article: 33.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Fan Li
- Department of Chemistry, University of Minnesota, 207 Pleasant St. SE, Minneapolis, MN 55455, USA
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26
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Li F, Josephson DP, Stein A. Kolloidale Organisation: der Weg vom Partikel zu kolloidalen Molekülen und Kristallen. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201001451] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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27
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Kung W, Gonzalez-Mozuelos P, Olvera de la Cruz M. A minimal model of nanoparticle crystallization in polar solvents via steric effects. J Chem Phys 2010; 133:074704. [DOI: 10.1063/1.3469863] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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28
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Jun Y, Yu D, George MC, Braun PV. Holographically Defined Nanoparticle Placement in 3D Colloidal Crystals. J Am Chem Soc 2010; 132:9958-9. [DOI: 10.1021/ja1023628] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yoonho Jun
- Department of Materials Science and Engineering, Beckman Institute, and Frederick Seitz Materials Research Laboratory, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801
| | - Dongguk Yu
- Department of Materials Science and Engineering, Beckman Institute, and Frederick Seitz Materials Research Laboratory, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801
| | - Matthew C. George
- Department of Materials Science and Engineering, Beckman Institute, and Frederick Seitz Materials Research Laboratory, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801
| | - Paul V. Braun
- Department of Materials Science and Engineering, Beckman Institute, and Frederick Seitz Materials Research Laboratory, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801
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29
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Wang P, Zhou L, Zhang X, Liang X. Facilitated photochemical cleavage of benzylic C–O bond. Application to photolabile hydroxyl-protecting group design. Chem Commun (Camb) 2010; 46:1514-6. [DOI: 10.1039/b922021f] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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30
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Yu YY, Tian F, Wei C, Wang CC. Facile synthesis of triple-stimuli (photo/pH/thermo) responsive copolymers of 2-diazo-1,2-naphthoquinone-mediated poly(N-isopropylacrylamide-co-N-hydroxymethylacrylamide). ACTA ACUST UNITED AC 2009. [DOI: 10.1002/pola.23357] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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31
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Viehman DC, Schweizer KS. Dynamics of Tracer Particles in Gel-like Media. J Phys Chem B 2008; 112:16110-4. [DOI: 10.1021/jp8060784] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Douglas C. Viehman
- Department of Chemical and Biomolecular Engineering, Department of Materials Science, and Frederick Seitz Materials Research Laboratory, University of Illinois, 1304 West Green Street, Urbana, Illinois 61801
| | - Kenneth S. Schweizer
- Department of Chemical and Biomolecular Engineering, Department of Materials Science, and Frederick Seitz Materials Research Laboratory, University of Illinois, 1304 West Green Street, Urbana, Illinois 61801
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32
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Viehman DC, Schweizer KS. Cooperative activated dynamics in dense mixtures of hard and sticky spheres. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2008; 78:051404. [PMID: 19113127 DOI: 10.1103/physreve.78.051404] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2008] [Indexed: 05/27/2023]
Abstract
The coupled activated dynamics in dense mixtures of repulsive and sticky hard spheres is studied using stochastic nonlinear Langevin equation theory. The effective free energy surface, barriers, saddle point trajectories, and mean first passage times depend in a rich manner on mixture composition, (high) total volume fraction, and attractive interaction strength. In general, there are three types of saddle point trajectories or relaxation pathways: a pure sticky or pure repulsive particle displacement keeping the other species localized, and a cooperative motion involving repulsive and attractive particle displacements. The barrier for activated hopping usually increases with the ratio of sticky to repulsive particle displacement. However, at intermediate values of the displacement ratio it can attain a broad plateau value, and can even exhibit a local maximum, and hence nonmonotonic behavior, at high sticky particle mixture compositions if the attraction strength is modest. The mean first passage, or hopping, times are computed using multidimensional Kramers theory. In most cases the hopping time trends reflect the behavior of the barrier height, especially as the sticky particle attraction strengths become large. However, there are dramatic exceptions associated with cooperative repulsive and attractive particle trajectories where the barriers are high but a greatly enhanced number of such trajectories exist near the saddle point.
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Affiliation(s)
- Douglas C Viehman
- Department of Chemical and Biomolecular Engineering, Frederick Seitz Materials Research Laboratory, University of Illinois, 1304 West Green Street, Urbana, Illinois 61801, USA
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33
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Viehman DC, Schweizer KS. Theory of gelation, vitrification, and activated barrier hopping in mixtures of hard and sticky spheres. J Chem Phys 2008; 128:084509. [PMID: 18315063 DOI: 10.1063/1.2837295] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Naive mode coupling theory (NMCT) and the nonlinear stochastic Langevin equation theory of activated dynamics have been generalized to mixtures of spherical particles. Two types of ideal nonergodicity transitions are predicted corresponding to localization of both, or only one, species. The NMCT transition signals a dynamical crossover to activated barrier hopping dynamics. For binary mixtures of equal diameter hard and attractive spheres, a mixture composition sensitive "glass-melting" type of phenomenon is predicted at high total packing fractions and weak attractions. As the total packing fraction decreases, a transition to partial localization occurs corresponding to the coexistence of a tightly localized sticky species in a gel-like state with a fluid of hard spheres. Complex behavior of the localization lengths and shear moduli exist because of the competition between excluded volume caging forces and attraction-induced physical bond formation between sticky particles. Beyond the NMCT transition, a two-dimensional nonequilibrium free energy surface emerges, which quantifies cooperative activated motions. The barrier locations and heights are sensitive to the relative amplitude of the cooperative displacements of the different species.
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Affiliation(s)
- Douglas C Viehman
- Department of Chemical and Biomolecular Engineering, University of Illinois, 1304 West Green Street, Urbana, Illinois 61801, USA
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34
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Tian F, Yu Y, Wang C, Yang S. Consecutive Morphological Transitions in Nanoaggregates Assembled from Amphiphilic Random Copolymer via Water-Driven Micellization and Light-Triggered Dissociation. Macromolecules 2008. [DOI: 10.1021/ma800142j] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Feng Tian
- Key Laboratory of Molecular Engineering of Polymers (Ministry of Education), Department of Macromolecular Science and Advanced Materials Laboratory, Fudan University, Shanghai 200433, China, and Department of Materials Science and Engineering, University of Pennsylvania, 3231 Walnut Street, Philadelphia, Pennsylvania 19014
| | - Yuanyuan Yu
- Key Laboratory of Molecular Engineering of Polymers (Ministry of Education), Department of Macromolecular Science and Advanced Materials Laboratory, Fudan University, Shanghai 200433, China, and Department of Materials Science and Engineering, University of Pennsylvania, 3231 Walnut Street, Philadelphia, Pennsylvania 19014
| | - Changchun Wang
- Key Laboratory of Molecular Engineering of Polymers (Ministry of Education), Department of Macromolecular Science and Advanced Materials Laboratory, Fudan University, Shanghai 200433, China, and Department of Materials Science and Engineering, University of Pennsylvania, 3231 Walnut Street, Philadelphia, Pennsylvania 19014
| | - Shu Yang
- Key Laboratory of Molecular Engineering of Polymers (Ministry of Education), Department of Macromolecular Science and Advanced Materials Laboratory, Fudan University, Shanghai 200433, China, and Department of Materials Science and Engineering, University of Pennsylvania, 3231 Walnut Street, Philadelphia, Pennsylvania 19014
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35
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Affiliation(s)
- Erik C. Nelson
- The authors are in the Department of Materials Science and Engineering, Beckman Institute and Frederick Seitz Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Paul V. Braun
- The authors are in the Department of Materials Science and Engineering, Beckman Institute and Frederick Seitz Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
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36
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Han G, You CC, Kim BJ, Turingan RS, Forbes NS, Martin CT, Rotello VM. Light-regulated release of DNA and its delivery to nuclei by means of photolabile gold nanoparticles. Angew Chem Int Ed Engl 2007; 45:3165-9. [PMID: 16572498 DOI: 10.1002/anie.200600214] [Citation(s) in RCA: 227] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Gang Han
- Department of Chemistry, University of Massachusetts, 710 North Pleasant Street, Amherst, MA 01003, USA
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37
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López-López JM, Schmitt A, Moncho-Jordá A, Hidalgo-Álvarez R. Stability of binary colloids: kinetic and structural aspects of heteroaggregation processes. SOFT MATTER 2006; 2:1025-1042. [PMID: 32680205 DOI: 10.1039/b608349h] [Citation(s) in RCA: 78] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
This review reports on recent advances in our knowledge about the stability of binary colloids. We focus not only on experimental results but also discuss theoretical and simulation studies regarding kinetic and structural aspects of heteroaggregation processes arising in such systems. In the first part of this work, heteroaggregation of oppositely charged particles is reviewed. When the interactions are short ranged, binary diffusion-limited cluster-cluster aggregation takes place. In this case, the short time behavior of the system follows the Hogg, Healy and Fuerstenau (HHF) theory. At long times, however, stable aggregates may form and remain in the system. Furthermore, cluster discrimination is observed, clusters that differ only by one constituent particle were found to behave quite differently. When the range of the interactions is increased, the latter effects become more pronounced. The fractal dimension of heteroaggregates is, in general, smaller than the values reported for fast and slow homoaggregation processes. In some cases, even values close to unity were obtained. This means that heteroaggregates have an open branched structure that may approach a chain-like morphology. In the second part of this work, we briefly discuss similar effects arising in heteroaggregation phenomena due to differences in particle size and chemical composition. The third part of this review tackles recent developments in the field of equilibrium phase diagrams of binary colloids. In the last section, the relatively small number of papers about heteroaggregation processes in two-dimensional systems is also discussed.
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Affiliation(s)
- J M López-López
- Grupo de Física de Fluidos y Biocoloides, Dpto. Física Aplicada, Facultad de Ciencias, Campus Fuentenueva s/n, Granada, Spain.
| | - A Schmitt
- Grupo de Física de Fluidos y Biocoloides, Dpto. Física Aplicada, Facultad de Ciencias, Campus Fuentenueva s/n, Granada, Spain.
| | - A Moncho-Jordá
- Grupo de Física de Fluidos y Biocoloides, Dpto. Física Aplicada, Facultad de Ciencias, Campus Fuentenueva s/n, Granada, Spain.
| | - R Hidalgo-Álvarez
- Grupo de Física de Fluidos y Biocoloides, Dpto. Física Aplicada, Facultad de Ciencias, Campus Fuentenueva s/n, Granada, Spain.
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38
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Han G, You CC, Kim BJ, Turingan RS, Forbes NS, Martin CT, Rotello VM. Light-Regulated Release of DNA and Its Delivery to Nuclei by Means of Photolabile Gold Nanoparticles. Angew Chem Int Ed Engl 2006. [DOI: 10.1002/ange.200600214] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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39
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You CC, Verma A, Rotello VM. Engineering the nanoparticle-biomacromolecule interface. SOFT MATTER 2006; 2:190-204. [PMID: 32646145 DOI: 10.1039/b517354j] [Citation(s) in RCA: 82] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Monolayer-protected nanoparticles feature tunable size, surface functionality and core material, providing scaffolds for targeting biomacromolecules. This review highlights recent advances in nanoparticle-biomacromolecule interactions, focusing on two key areas: (1) The modulation of structure and function of biomacromolecules through engineered interactions with nanoparticle surfaces; (2) The use of biomacromolecules as building blocks for nanostructured materials.
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Affiliation(s)
- Chang-Cheng You
- Department of Chemistry, University of Massachusetts, 710 North Pleasant Street, Amherst, MA 01003, USA.
| | - Ayush Verma
- Department of Chemistry, University of Massachusetts, 710 North Pleasant Street, Amherst, MA 01003, USA.
| | - Vincent M Rotello
- Department of Chemistry, University of Massachusetts, 710 North Pleasant Street, Amherst, MA 01003, USA.
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