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The Effect of Surface Treatment with Isocyanate and Aromatic Carbodiimide of Thermally Expanded Vermiculite Used as a Functional Filler for Polylactide-Based Composites. Polymers (Basel) 2021; 13:polym13060890. [PMID: 33799352 PMCID: PMC7999904 DOI: 10.3390/polym13060890] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Accepted: 03/11/2021] [Indexed: 01/17/2023] Open
Abstract
In this work, thermally expanded vermiculite (TE-VMT) was surface modified and used as a filler for composites with a polylactide (PLA) matrix. Modification of vermiculite was realized by simultaneous ball milling with the presence of two PLA chain extenders, aromatic carbodiimide (KI), and 4,4’-methylenebis(phenyl isocyanate) (MDI). In addition to analyzing the particle size of the filler subjected to processing, the efficiency of mechanochemical modification was evaluated by Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). The composites of PLA with three vermiculite types were prepared by melt mixing and subjected to mechanical, thermomechanical, thermal, and structural evaluation. The structure of composites containing a constant amount of the filler (20 wt%) was assessed using FTIR spectroscopy and SEM analysis supplemented by evaluating the final injection-molded samples’ physicochemical properties. Mechanical behavior of the composites was assessed by static tensile test and impact strength hardness measurements. Heat deflection temperature (HDT) test and dynamic thermomechanical analysis (DMTA) were applied to evaluate the influence of the filler addition and its functionalization on thermomechanical properties of PLA-based composites. Thermal properties were assessed by differential scanning calorimetry (DSC), pyrolysis combustion flow calorimetry (PCFC), and thermogravimetric analysis (TGA). The use of filler-reactive chain extenders (CE) made it possible to change the vermiculite structure and obtain an improvement in interfacial adhesion and more favorable filler dispersions in the matrix. This translated into an improvement in impact strength and an increase in thermo-mechanical stability and heat release capacity of composites containing modified vermiculites.
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The impact of antifouling layers in fabricating bioactive surfaces. Acta Biomater 2021; 126:45-62. [PMID: 33727195 DOI: 10.1016/j.actbio.2021.03.022] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2020] [Revised: 02/18/2021] [Accepted: 03/09/2021] [Indexed: 12/18/2022]
Abstract
Bioactive surfaces modified with functional peptides are critical for both fundamental research and practical application of implant materials and tissue repair. However, when bioactive molecules are tethered on biomaterial surfaces, their functions can be compromised due to unwanted fouling (mainly nonspecific protein adsorption and cell adhesion). In recent years, researchers have continuously studied antifouling strategies to obtain low background noise and effectively present the function of bioactive molecules. In this review, we describe several commonly used antifouling strategies and analyzed their advantages and drawbacks. Among these strategies, antifouling molecules are widely used to construct the antifouling layer of various bioactive surfaces. Subsequently, we summarize various structures of antifouling molecules and their surface grafting methods and characteristics. Application of these functionalized surfaces in microarray, biosensors, and implants are also introduced. Finally, we discuss the primary challenges associated with antifouling layers in fabricating bioactive surfaces and provide prospects for the future development of this field. STATEMENT OF SIGNIFICANCE: The nonspecific protein adsorption and cell adhesion will cause unwanted background "noise" on the surface of biological materials and detecting devices and compromise the performance of functional molecules and, therefore, impair the performance of materials and the sensitivity of devices. In addition, the selection of antifouling surfaces with proper chain length and high grafting density is also of great importance and requires further studies. Otherwise, the surface-tethered bioactive molecules may not function in their optimal status or even fail to display their functions. Based on these two critical issues, we summarize antifouling molecules with different structures, variable grafting methods, and diverse applications in biomaterials and biomedical devices reported in literature. Overall, we expect to shed some light on choosing the appropriate antifouling molecules in fabricating bioactive surfaces.
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Xing CY, Ma TF, Guo JS, Shen Y, Yan P, Fang F, Chen YP. Bacterially self-assembled encapsulin nanocompartment for removing silver from water. WATER RESEARCH 2021; 191:116800. [PMID: 33433335 DOI: 10.1016/j.watres.2020.116800] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 12/29/2020] [Accepted: 12/30/2020] [Indexed: 06/12/2023]
Abstract
Compartmentalization can protect cells from the interference of external toxic substances by sequestering toxic products. We hypothesized that proteinaceous nanocompartments may be a feasible candidate material to be added to genetically modified bacteria for the sequestration of toxic environmental products, which would open up a new bioremediation pathway. Here, we showed that the model bacterium (Escherichia coli) with self-assembling nanocompartments can remove silver (Ag) from water. Transmission electron microscopy and energy dispersive X-ray (TEM-EDX) analysis showed that the nanocompartments combined stably with silver in vitro. In addition, when exposed to 30 μM AgNO3, the survival rate of genetically modified bacteria (with nanocompartments) was 86%, while it was just 59% in the wild-type bacteria (without nanocompartments). Label-free quantitative proteomics indicated that the nanocompartments enhanced bacterial activity by inducing the up-regulation of protein processing and secondary metabolites, and decreased their intracellular silver concentration, both of which contributed to their increased resistance to toxic silver. This study on nanocompartments has contributed to a deeper understanding of how bacteria respond to environmental stressors like heavy metal pollutants in water. The technology promises to provide a new strategy for recycling heavy metals from sewage.
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Affiliation(s)
- Chong-Yang Xing
- Key Laboratory of Reservoir Aquatic Environment, Chongqing Institute of Green and Intelligence Technology, Chinese Academy of Sciences, Chongqing, 400714, China; Chongqing School, University of Chinese Academy of Sciences, Chongqing, 400714, China
| | - Teng-Fei Ma
- National Base of International Science and Technology Cooperation for Intelligent Manufacturing Service, Chongqing Technology and Business University, Chongqing, 400067, China
| | - Jin-Song Guo
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environments of MOE, Chongqing University, Chongqing, 400045, China
| | - Yu Shen
- National Base of International Science and Technology Cooperation for Intelligent Manufacturing Service, Chongqing Technology and Business University, Chongqing, 400067, China
| | - Peng Yan
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environments of MOE, Chongqing University, Chongqing, 400045, China
| | - Fang Fang
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environments of MOE, Chongqing University, Chongqing, 400045, China
| | - You-Peng Chen
- Key Laboratory of Reservoir Aquatic Environment, Chongqing Institute of Green and Intelligence Technology, Chinese Academy of Sciences, Chongqing, 400714, China; Chongqing School, University of Chinese Academy of Sciences, Chongqing, 400714, China; Key Laboratory of the Three Gorges Reservoir Region's Eco-Environments of MOE, Chongqing University, Chongqing, 400045, China.
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Grancarić AM, Tarbuk A, Sutlović A, Castellano A, Colleoni C, Rosace G, Plutino MR. Enhancement of acid dyestuff salt-free fixation by a cationizing sol-gel based coating for cotton fabric. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2020.125984] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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55
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Cisneros-Covarrubias CA, Palestino G, Gómez-Durán CFA, Rosales-Mendoza S, Betancourt-Mendiola MDL. Optimized microwave-assisted functionalization and quantification of superficial amino groups on porous silicon nanostructured microparticles. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2021; 13:516-525. [PMID: 33443502 DOI: 10.1039/d0ay02083d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
This work presents an optimized microwave (MW)-assisted method for the chemical functionalization of porous silicon particles (PSip). 3-(Aminopropyl)triethoxysilane (APTES) was grafted on previously stabilized PSip. The functionalization efficiency was studied and optimized in terms of reaction time (Rt) and reaction temperature (RT) using a central composite design (CCD). The effect of MW irradiation on the surface coverage was found to strongly depend on the PSip surface chemistry, Rt, RT, and percentage of APTES. Quantification of grafted amino groups was performed by the ninhydrin method (NHIM); confirming the results by thermogravimetric analysis (TGA). Reacting with 5% APTES solution at 95 °C for 26 min was the best functionalization conditions. The efficiency of PSip-APTES prepared under the optimized conditions was compared to those functionalized by the traditional method; MW irradiation increases by 39% the number of functional groups grafted onto the PSip surfaces with the additional benefit of having a drastic reduction in Rt.
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Affiliation(s)
- Cándida Anahy Cisneros-Covarrubias
- Laboratorio de Biopolímeros y Nanoestructuras, Facultad de Ciencias Químicas, Universidad Autónoma de San Luis Potosí, C.P. 78210 San Luis Potosí, Mexico.
| | - Gabriela Palestino
- Laboratorio de Biopolímeros y Nanoestructuras, Facultad de Ciencias Químicas, Universidad Autónoma de San Luis Potosí, C.P. 78210 San Luis Potosí, Mexico. and Sección de Biotecnología, Centro de Investigación en Ciencias de la Salud y Biomedicina, Universidad Autónoma de San Luis Potosí, C.P. 78210 San Luis Potosí, Mexico
| | - César F A Gómez-Durán
- Laboratorio de Biopolímeros y Nanoestructuras, Facultad de Ciencias Químicas, Universidad Autónoma de San Luis Potosí, C.P. 78210 San Luis Potosí, Mexico.
| | - Sergio Rosales-Mendoza
- Sección de Biotecnología, Centro de Investigación en Ciencias de la Salud y Biomedicina, Universidad Autónoma de San Luis Potosí, C.P. 78210 San Luis Potosí, Mexico
| | - María de Lourdes Betancourt-Mendiola
- Sección de Biotecnología, Centro de Investigación en Ciencias de la Salud y Biomedicina, Universidad Autónoma de San Luis Potosí, C.P. 78210 San Luis Potosí, Mexico
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Zarinwall A, Waniek T, Saadat R, Braun U, Sturm H, Garnweitner G. Comprehensive Characterization of APTES Surface Modifications of Hydrous Boehmite Nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:171-179. [PMID: 33355468 DOI: 10.1021/acs.langmuir.0c02682] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Hydrous boehmite (γ-AlOOH) nanoparticles (BNP) show great potential as nanoscale filler for the fabrication of fiber reinforced nanocomposite materials. Notably, the particle-matrix interaction has been demonstrated to be decisive for improving the matrix-dominant mechanical properties in the past years. Tailoring the surface properties of the nanofiller enables to selectively design the interaction and thus to exploit the benefits of the nanocomposite in an optimal way. Here, an extensive study is presented on the binding of (3-aminopropyl)triethoxysilane (APTES), a common silane surface modifier, on BNP in correlation to different process parameters (concentration, time, temperature, and pH). Furthermore, a comprehensive characterization of the modified BNP was performed by using elemental analysis (EA), thermogravimetric analysis (TGA) coupled with mass spectrometry (TGA-MS), and Kaiser's test (KT). The results show an increasing monolayer formation up to a complete surface coverage with rising APTES concentration, time, and temperature, resulting in a maximal grafting density of 1.3 molecules/nm2. Unspecific multilayer formation was solely observed under acidic conditions. Comparison of TGA-MS results with data recorded from EA, TGA, and KT verified that TGA-MS is a convenient and highly suitable method to elucidate the ligand binding in detail.
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Affiliation(s)
- Ajmal Zarinwall
- Institute for Particle Technology, Technische Universität Braunschweig, Volkmaroder Str. 5, 38104 Braunschweig, Germany
| | - Tassilo Waniek
- Bundesanstalt für Materialforschung und -prüfung (BAM), Unter den Eichen 87,12205 Berlin, Germany
| | - Reza Saadat
- Institute for Particle Technology, Technische Universität Braunschweig, Volkmaroder Str. 5, 38104 Braunschweig, Germany
| | - Ulrike Braun
- Bundesanstalt für Materialforschung und -prüfung (BAM), Unter den Eichen 87,12205 Berlin, Germany
| | - Heinz Sturm
- Bundesanstalt für Materialforschung und -prüfung (BAM), Unter den Eichen 87,12205 Berlin, Germany
| | - Georg Garnweitner
- Institute for Particle Technology, Technische Universität Braunschweig, Volkmaroder Str. 5, 38104 Braunschweig, Germany
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Oggianu M, Figus C, Ashoka-Sahadevan S, Monni N, Marongiu D, Saba M, Mura A, Bongiovanni G, Caltagirone C, Lippolis V, Cannas C, Cadoni E, Mercuri ML, Quochi F. Silicon-based fluorescent platforms for copper(ii) detection in water. RSC Adv 2021; 11:15557-15564. [PMID: 35481193 PMCID: PMC9029085 DOI: 10.1039/d1ra02695j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Accepted: 04/19/2021] [Indexed: 12/23/2022] Open
Abstract
The potential of silicon-based fluorescent platforms for the detection of trace toxic metal ions was investigated in an aqueous environment. To this aim, silicon chips were first functionalized with amino groups, and fluorescein organic dyes, used as sensing molecules, were then covalently linked to the surface via formation of thiourea groups. The obtained hybrid heterostructures exhibited high sensitivity and selectivity towards copper(ii), a limit of detection compatible with the recommended upper limits for copper in drinking water, and good reversibility using a standard metal–chelating agent. The fluorophore–analyte interaction mechanism at the basis of the reported fluorescence quenching, as well as the potential of performance improvement, were also studied. The herein presented sensing architecture allows, in principle, tailoring of the selectivity towards other metal ions by proper fluorophore selection, and provides a favorable outlook for integration of fluorescent chemosensors with silicon photonics technology. Covalent linkage of fluorescein to silanized silicon chips yields solid-state platforms for detection of copper(ii) in water. This architecture represents a step forward towards the fabrication of sensors for remote water analysis applications.![]()
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Fang JS, Yang TM, Pan YC, Lai GY, Cheng YL, Chen GS. Chemical-Structure Evolution Model for the Self-Assembling of Amine-Terminated Monolayers on Nanoporous Carbon-Doped Organosilicate in Tightly Controlled Environments. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:15153-15161. [PMID: 33270454 DOI: 10.1021/acs.langmuir.0c02801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Amine-terminated self-assembled monolayers are molecular nanolayers, typically formed via wet-chemical solution on specific substrates for precision surface engineering or interface modification. However, homogeneous assembling of a highly ordered monolayer by the facile, wet method is rather tricky because it involves process parameters, such as solvent type, molecular concentration, soaking time and temperature, and humidity level. Here, we select 3-aminopropyltrimethoxysilane (APTMS) as a model molecule of aminosilane for the silanization of nanoporous carbon-doped organosilicate (p-SiOCH) under tightly controlled process environments. Surface mean roughness (Ra) and the water contact angle (θ) of the p-SiOCH layers upon silanization at a 10% humidity-controlled environment behave similarly and follow a three-stage evolution: a leap to a maximum at 15 min for Ra (from 0.227 to 0.411 nm) and θ (from 25 to 86°), followed by a gradual decrease to 0.225 nm and 69o, finally leveling off at the above values (>60 min). The -NH3+ fraction indicating monolayer disorientation evolves in a similar fashion. The fully grown monolayer is highly oriented yielding an unprecedented low -NH3+ fraction of 0.08 (and 0.92 of upright -NH2 groups). However, while having a similar thickness of approximately 1.4 ± 0.1 nm, the molecular layers grown at 30% relative humidity exhibit a significantly elevated -NH3+ fraction of 0.42, indicating that controlling the humidity is vital to the fabrication of highly oriented APTMS molecular layers. A bonding-structure evolution model, as distinct from those offered previously, is proposed and discussed.
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Affiliation(s)
- Jau-Shiung Fang
- Department of Materials Science and Engineering, National Formosa University, Huwei, Yunlin 632, Taiwan
| | - Tzu-Ming Yang
- Department of Materials Science and Engineering, Feng Chia University, Seatwen, Taichung 40724, Taiwan
| | - Yen-Chang Pan
- Department of Materials Science and Engineering, Feng Chia University, Seatwen, Taichung 40724, Taiwan
| | - Guan-Yu Lai
- Department of Materials Science and Engineering, Feng Chia University, Seatwen, Taichung 40724, Taiwan
| | - Yi-Lung Cheng
- Department of Electrical Engineering, National Chi-Nan University, Puli, Nantou 54561, Taiwan
| | - Giin-Shan Chen
- Department of Materials Science and Engineering, Feng Chia University, Seatwen, Taichung 40724, Taiwan
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59
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Barczewski M, Mysiukiewicz O, Lewandowski K, Nowak D, Matykiewicz D, Andrzejewski J, Skórczewska K, Piasecki A. Effect of Basalt Powder Surface Treatments on Mechanical and Processing Properties of Polylactide-Based Composites. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E5436. [PMID: 33260378 PMCID: PMC7730719 DOI: 10.3390/ma13235436] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Revised: 11/25/2020] [Accepted: 11/26/2020] [Indexed: 12/11/2022]
Abstract
Legislative restrictions and the needs of consumers have created a demand for sustainable materials. Polylactide (PLA) is a biodegradable polyester with advantageous mechanical properties, however, due to its low crystallization rate, it also has low thermomechanical stability. Its range of application temperatures can be widened using nucleating agents and fillers including basalt powder (BP), a waste product from the mining industry. This study analyzed the possibility of enhancing the properties of a PLA-BP composite by chemically treating the filler. Basalt powder was subjected to silanization with 3-aminopropyltriethoxysilane or γ-glycidoxypropyltrimethoxysilane and mixed with PLA at 5-20 wt%. The nucleating effect of a potassium salt of 3,5-bis(methoxycarbonyl) (LAK-301) in the silanized composite was also evaluated. The properties of the materials with silanized BP were compared with the unmodified basalt powder. The miscibility of the filler and the polymer was assessed by oscillatory rheometry. The structure of the composites was studied using scanning electron microscopy and their thermomechanical properties were analyzed using dynamic mechanical thermal analysis. Mechanical properties such as tensile strength, hardness and impact strength, and heat deflection temperature of the materials were also determined. It was concluded that BP-filled nucleated PLA composites presented satisfactory thermomechanical stability without silanization, but chemical treatment could improve the matrix-filler interactions.
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Affiliation(s)
- Mateusz Barczewski
- Institute of Materials Technology, Poznan University of Technology, Piotrowo 3, 61-138 Poznan, Poland; (O.M.); (D.N.); (D.M.); (J.A.)
| | - Olga Mysiukiewicz
- Institute of Materials Technology, Poznan University of Technology, Piotrowo 3, 61-138 Poznan, Poland; (O.M.); (D.N.); (D.M.); (J.A.)
| | - Krzysztof Lewandowski
- Faculty of Chemical Technology and Engineering, UTP University of Science and Technology, Seminaryjna 3, 85-326 Bydgoszcz, Poland; (K.L.); (K.S.)
| | - Daniel Nowak
- Institute of Materials Technology, Poznan University of Technology, Piotrowo 3, 61-138 Poznan, Poland; (O.M.); (D.N.); (D.M.); (J.A.)
| | - Danuta Matykiewicz
- Institute of Materials Technology, Poznan University of Technology, Piotrowo 3, 61-138 Poznan, Poland; (O.M.); (D.N.); (D.M.); (J.A.)
| | - Jacek Andrzejewski
- Institute of Materials Technology, Poznan University of Technology, Piotrowo 3, 61-138 Poznan, Poland; (O.M.); (D.N.); (D.M.); (J.A.)
| | - Katarzyna Skórczewska
- Faculty of Chemical Technology and Engineering, UTP University of Science and Technology, Seminaryjna 3, 85-326 Bydgoszcz, Poland; (K.L.); (K.S.)
| | - Adam Piasecki
- Institute of Materials Engineering, Poznan University of Technology, Jana Pawła II 24, 60-965 Poznan, Poland;
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60
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Pan W, Han Z, Chang Y, Duan X. Three-dimensional biosensor surface based on novel thorns-like polyelectrolytes. Biosens Bioelectron 2020; 167:112504. [DOI: 10.1016/j.bios.2020.112504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 08/05/2020] [Accepted: 08/06/2020] [Indexed: 11/29/2022]
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61
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Extracellular vesicles on demand (EVOD) chip for screening and quantification of cancer-associated extracellular vesicles. Biosens Bioelectron 2020; 168:112535. [DOI: 10.1016/j.bios.2020.112535] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Revised: 08/04/2020] [Accepted: 08/20/2020] [Indexed: 12/25/2022]
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Kamińska A, Gajos K, Woźnicka O, Dłubacz A, Marzec ME, Budkowski A, Stępień EŁ. Using a lactadherin-immobilized silicon surface for capturing and monitoring plasma microvesicles as a foundation for diagnostic device development. Anal Bioanal Chem 2020; 412:8093-8106. [PMID: 32959112 PMCID: PMC7584542 DOI: 10.1007/s00216-020-02938-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 08/28/2020] [Accepted: 09/03/2020] [Indexed: 12/20/2022]
Abstract
Microvesicles (MVs) are found in several types of body fluids and are promising disease biomarkers and therapeutic targets. This study aimed to develop a novel biofunctionalized surface for binding plasma microvesicles (PMVs) based on a lab-on-a-chip (LOC) approach. A new lactadherin (LACT)-functionalized surface was prepared and examined for monitoring PMVs. Moreover, two different strategies of LACT immobilization on a silicon surface were applied to compare different LACT orientations. A higher PMV to LACT binding efficiency was observed for LACT bonded to an αvβ3 integrin-functionalized surface compared with that for LACT directly bonded to a glutaraldehyde-modified surface. Effective binding of PMVs and its components for both LACT immobilization strategies was confirmed using spectral ellipsometry and time-of-flight secondary ion mass spectrometry methods. The proposed PMV capturing system can be used as a foundation to design novel point-of-care (POC) diagnostic devices to detect and characterize PMVs in clinical samples. Graphical Abstract.
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Affiliation(s)
- Agnieszka Kamińska
- Department of Medical Physics, M. Smoluchowski Institute of Physics, Jagiellonian University, 30-348, Kraków, Poland
| | - Katarzyna Gajos
- Department of Molecular and Interfacial Biophysics, M. Smoluchowski Institute of Physics, Jagiellonian University, 30-348, Kraków, Poland.
| | - Olga Woźnicka
- Department of Cell Biology and Imaging, Institute of Zoology and Biomedical Research, Jagiellonian University, 30-387, Kraków, Poland
| | - Anna Dłubacz
- Department of Advanced Materials Engineering, M. Smoluchowski Institute of Physics, Jagiellonian Univeristy, 30-348, Kraków, Poland
| | - Magdalena E Marzec
- Institute of Physics, Cracow University of Technology, 30-084, Kraków, Poland
| | - Andrzej Budkowski
- Department of Molecular and Interfacial Biophysics, M. Smoluchowski Institute of Physics, Jagiellonian University, 30-348, Kraków, Poland
| | - Ewa Ł Stępień
- Department of Medical Physics, M. Smoluchowski Institute of Physics, Jagiellonian University, 30-348, Kraków, Poland.
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Ngouangna EN, Manan MA, Oseh JO, Norddin M, Agi A, Gbadamosi AO. Influence of (3–Aminopropyl) triethoxysilane on silica nanoparticle for enhanced oil recovery. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113740] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Efficient Method for the Concentration Determination of Fmoc Groups Incorporated in the Core-Shell Materials by Fmoc-Glycine. Molecules 2020; 25:molecules25173983. [PMID: 32882948 PMCID: PMC7504793 DOI: 10.3390/molecules25173983] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 08/22/2020] [Accepted: 08/31/2020] [Indexed: 12/11/2022] Open
Abstract
In this paper, we described the synthesis procedure of TiO2@SiO2 core-shell modified with 3-(aminopropyl)trimethoxysilane (APTMS). The chemical attachment of Fmoc-glycine (Fmoc-Gly-OH) at the surface of the core-shell structure was performed to determine the amount of active amino groups on the basis of the amount of Fmoc group calculation. We characterized nanostructures using various methods: transmission electron microscope (TEM), scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA) and X-ray photoelectron spectroscopy (XPS) to confirm the modification effectiveness. The ultraviolet-visible spectroscopy (UV-vis) measurement was adopted for the quantitative determination of amino groups present on the TiO2@SiO2 core-shell surface by determination of Fmoc substitution. The nanomaterials were functionalized by Fmoc-Gly-OH and then the fluorenylmethyloxycarbonyl (Fmoc) group was cleaved using 20% (v/v) solution of piperidine in DMF. This reaction led to the formation of a dibenzofulvene-piperidine adduct enabling the estimation of free Fmoc groups by measurement the maximum absorption at 289 and 301 nm using UV-vis spectroscopy. The calculations of Fmoc loading on core-shell materials was performed using different molar absorption coefficient: 5800 and 6089 dm3 × mol-1 × cm-1 for λ = 289 nm and both 7800 and 8021 dm3 × mol-1 × cm-1 for λ = 301 nm. The obtained results indicate that amount of Fmoc groups present on TiO2@SiO2-(CH2)3-NH2 was calculated at 6 to 9 µmol/g. Furthermore, all measurements were compared with Fmoc-Gly-OH used as the model sample.
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Ashraf K, Roy K, Higgins DA, Collinson MM. On the Importance of Silane Infusion Order on the Microscopic and Macroscopic Properties of Multifunctional Charge Gradients. ACS OMEGA 2020; 5:21897-21905. [PMID: 32905528 PMCID: PMC7469646 DOI: 10.1021/acsomega.0c03068] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Accepted: 08/04/2020] [Indexed: 06/11/2023]
Abstract
Four multicomponent charge gradients containing acidic and basic functionalities were prepared via sol-gel processes and the controlled-rate infusion (CRI) method to more clearly understand how preparation conditions influence macroscopic properties. CRI is used to form gradients by infusing reactive alkoxysilanes into a glass vial housing a vertically oriented modified silicon wafer. The concentration and time of infusion of the silane solutions were kept constant. Only the sequence of infusion of the silane solutions was changed. The first set of samples was prepared by initially infusing a solution containing 3-aminopropyltriethoxysilane (APTES) followed by a mercaptopropyltrimethoxysilane (MPTMS) solution. The individual gradients were formed either in an aligned or opposed fashion with respect to the initial gradient. The second set of samples was prepared by infusing the MPTMS solution first followed by the APTES solution, again in either an aligned or opposed fashion. To create charge gradients (NH3 +, SO3 -), the samples were immersed into H2O2. The extent of modification, the degree of protonation of the amine, and the thicknesses of the individual layers were examined by X-ray photoelectron spectroscopy (XPS) and spectroscopic ellipsometry. The wettability of the individual gradients was assessed via static contact angle measurements. The results demonstrate the importance of infusion order and how it influences the macroscopic and microscopic properties of gradient surfaces including the surface concentration, packing density, degree of protonation, and ultimately wettability. When the gradient materials are prepared via infusion of the APTES sol first, it results in increased deposition of both the amine and thiol groups as evidenced by XPS. Interestingly, the total thickness evaluated from ellipsometry was independent of the infusion order for the aligned gradients, indicative of significant differences in the film density. For the opposed gradients, however, the infusion of APTES first leads to a significantly thicker composite film. Furthermore, it also leads to a more pronounced gradient in the protonation of the amine, which introduces a very different surface wettability. The use of aminosilanes provides a viable approach to create gradient surfaces with different functional group distributions. These studies demonstrate that the controlled placement of functional groups on a surface can provide a new route to prepare gradient materials with improved performance.
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Affiliation(s)
- Kayesh
M. Ashraf
- Department
of Chemistry, Virginia Commonwealth University, Richmond, Virginia 23284-2006, United States
| | - Kallol Roy
- Department
of Chemistry, Virginia Commonwealth University, Richmond, Virginia 23284-2006, United States
| | - Daniel A. Higgins
- Department
of Chemistry, Kansas State University, Manhattan, Kansas 66506-0401, United States
| | - Maryanne M. Collinson
- Department
of Chemistry, Virginia Commonwealth University, Richmond, Virginia 23284-2006, United States
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66
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Bekmurzayeva A, Dukenbayev K, Azevedo HS, Marsili E, Tosi D, Kanayeva D. Optimizing Silanization to Functionalize Stainless Steel Wire: Towards Breast Cancer Stem Cell Isolation. MATERIALS 2020; 13:ma13173693. [PMID: 32825531 PMCID: PMC7504676 DOI: 10.3390/ma13173693] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 08/09/2020] [Accepted: 08/11/2020] [Indexed: 12/03/2022]
Abstract
Chemically modified metal surfaces have been used to recognize and capture specific cell types and biomolecules. In this work, stainless steel wires were functionalized with aptamers against breast cancer stem cell markers. Stainless steel wires were first electropolished and silanized via electrodeposition. Aptamers were then attached to the silanized surface through a cross-linker. The functionalized wires were able to capture the target cells in an in vitro test. During surface modification steps, wires were analyzed by atomic force microscopy, cyclic voltammetry, scanning electron and fluorescence microscopy to determine their surface composition and morphology. Optimized conditions of silanization (applied potential, solution pH, heat treatment temperature) for obtaining an aptamer-functionalized wire were determined in this work together with the use of several surface characterization techniques suitable for small-sized and circular wires. These modified wires have potential applications for the in vivo capture of target cells in blood flow, since their small size allows their insertion as standard guidewires in biomedical devices.
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Affiliation(s)
- Aliya Bekmurzayeva
- Science, Engineering and Technology Program, Nazarbayev University, Nur-Sultan 010000, Kazakhstan;
- National Laboratory Astana, Nazarbayev University, Nur-Sultan 010000, Kazakhstan;
| | - Kanat Dukenbayev
- School of Engineering and Digital Sciences, Nazarbayev University, Nur-Sultan 010000, Kazakhstan; (K.D.); (E.M.)
| | - Helena S. Azevedo
- School of Engineering and Materials Science, Queen Mary University of London, London E1 4NS, UK;
| | - Enrico Marsili
- School of Engineering and Digital Sciences, Nazarbayev University, Nur-Sultan 010000, Kazakhstan; (K.D.); (E.M.)
| | - Daniele Tosi
- National Laboratory Astana, Nazarbayev University, Nur-Sultan 010000, Kazakhstan;
- School of Engineering and Digital Sciences, Nazarbayev University, Nur-Sultan 010000, Kazakhstan; (K.D.); (E.M.)
| | - Damira Kanayeva
- School of Sciences and Humanities, Nazarbayev University, Nur-Sultan 010000, Kazakhstan
- Correspondence:
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67
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Hornos F, Esquembre R, Gómez J. Competitive inhibition of protein adsorption to silica surfaces by their coating with high density charge polyelectrolytes. Colloids Surf B Biointerfaces 2020; 191:110993. [DOI: 10.1016/j.colsurfb.2020.110993] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 03/04/2020] [Accepted: 03/23/2020] [Indexed: 12/23/2022]
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68
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Hassani H, Wolf NR, Yuan X, Wördenweber R, Offenhäusser A. Platinum substrate for surface plasmon microscopy at small angles. OPTICS LETTERS 2020; 45:3292-3295. [PMID: 32538965 DOI: 10.1364/ol.396051] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Accepted: 05/15/2020] [Indexed: 06/11/2023]
Abstract
Platinum is reported as the main component of the substrate in surface plasmon microscopy of the metal-dielectric interface for small-angle measurements. In the absence of a narrow dip in the angular spectrum of platinum, the refractive index of the dielectric medium or the thickness of a deposited layer is proven deducible from the observed sharp peak, close to the critical angle. The sensitivities of refractive index and thickness measurements using platinum are compared with that of a gold surface plasmon resonance chip. Furthermore, the thickness of a structured layer of (3-Aminopropyl)triethoxysilane on the platinum substrate is measured to be 0.7 nm, demonstrating the high sensitivity of the technique.
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69
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Lee TJ, Chau LK, Huang CJ. Controlled Silanization: High Molecular Regularity of Functional Thiol Groups on Siloxane Coatings. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:5935-5943. [PMID: 32388989 DOI: 10.1021/acs.langmuir.0c00745] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A comparative study on deposition and molecular regularity of two organosilanes, i.e., commercially available (3-mercaptopropyl)trimethoxysilane (MPTMS) and newly developed mercaptopropylsilatrane (MPS), was conducted in this work. MPTMS and MPS were applied to modify silicon surfaces to characterize their deposition kinetics, surface morphology, thickness, and elemental composition and the reactivity of thiol end groups based on gold-thiol and thiol-ene chemistries. MPS possesses a tricyclic caged structure and a transannular N → Si dative bond, making it chemically stable and controllable to avoid fast hydrolysis and aggregation in solution. The results indicate that MPS allows faster deposition and better formation of thin and homogeneous films than MPTMS. More importantly, the functional thiol groups on MPS coatings enable immobilization of a large amount of gold nanoparticles and effective thiol-ene photopolymerization with zwitterionic sulfobetaine acrylamide. Postmodification on silanized surfaces with MPS endows excellent plasmonic and antifouling properties, potentially leading to valuable applications to biosensing and biomaterials. The work demonstrated the feasibility and applicability of the functional silatrane molecule for surface silanization in a controlled manner.
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Affiliation(s)
- Tien-Jung Lee
- Department of Chemical and Materials Engineering, National Central University, Jhong-Li, Taoyuan 320, Taiwan
| | - Lai-Kwan Chau
- Department of Chemistry and Biochemistry and Center for Nano Bio-Detection, National Chung Cheng University, Chiayi 621, Taiwan
| | - Chun-Jen Huang
- Department of Biomedical Sciences and Engineering, National Central University, Jhong-Li, Taoyuan 320, Taiwan
- Department of Chemical and Materials Engineering, National Central University, Jhong-Li, Taoyuan 320, Taiwan
- R&D Center for Membrane Technology, Chung Yuan Christian University, 200 Chung Pei Rd., Chung-Li City 32023, Taiwan
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70
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Impact of Silanization Parameters and Antibody Immobilization Strategy on Binding Capacity of Photonic Ring Resonators. SENSORS 2020; 20:s20113163. [PMID: 32498466 PMCID: PMC7309079 DOI: 10.3390/s20113163] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 05/29/2020] [Accepted: 05/31/2020] [Indexed: 12/27/2022]
Abstract
Ring resonator-based biosensors have found widespread application as the transducing principle in “lab-on-a-chip” platforms due to their sensitivity, small size and support for multiplexed sensing. Their sensitivity is, however, not inherently selective towards biomarkers, and surface functionalization of the sensors is key in transforming the sensitivity to be specific for a particular biomarker. There is currently no consensus on process parameters for optimized functionalization of these sensors. Moreover, the procedures are typically optimized on flat silicon oxide substrates as test systems prior to applying the procedure to the actual sensor. Here we present what is, to our knowledge, the first comparison of optimization of silanization on flat silicon oxide substrates to results of protein capture on sensors where all parameters of two conjugation protocols are tested on both platforms. The conjugation protocols differed in the chosen silanization solvents and protein immobilization strategy. The data show that selection of acetic acid as the solvent in the silanization step generally yields a higher protein binding capacity for C-reactive protein (CRP) onto anti-CRP functionalized ring resonator sensors than using ethanol as the solvent. Furthermore, using the BS3 linker resulted in more consistent protein binding capacity across the silanization parameters tested. Overall, the data indicate that selection of parameters in the silanization and immobilization protocols harbor potential for improved biosensor binding capacity and should therefore be included as an essential part of the biosensor development process.
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71
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Miranda A, Martínez L, De Beule PAA. Facile synthesis of an aminopropylsilane layer on Si/SiO 2 substrates using ethanol as APTES solvent. MethodsX 2020; 7:100931. [PMID: 32528863 PMCID: PMC7276439 DOI: 10.1016/j.mex.2020.100931] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 05/06/2020] [Accepted: 05/15/2020] [Indexed: 12/29/2022] Open
Abstract
(3-aminopropyl)triethoxysilane (APTES) is a commonly used organosilane on surface functionalization of silicon oxide surfaces. However, its deposition process from solution-phase usually involves the use of toluene, which has often been identified as crucial for the formation of an aminopropylsilane monolayer. Toluene is ranked as a problematic solvent in the guide developed by a group referred to as the solvent sub-team of CHEM21. In this work, we propose a facile synthetic route for functionalizing a silicon substrate with APTES via solution-phase approach using only solvents that are classified as recommended. The influence of the APTES concentration, reaction times and different post-deposition conditions using acetic acid and methanol were studied in order to evaluate the quality and thickness of the organosilane layers.The method uses ethanol as APTES solvent for functionalizing silicon dioxide surfaces and only uses solvents classified as recommended. The method uses a solution phase approach, does not require complicated equipment and can be prepared at room temperature.
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Affiliation(s)
- Adelaide Miranda
- International Iberian Nanotechnology Laboratory (INL), Avenida Mestre José Veiga s/n, 4715-330 Braga, Portugal
| | - Lidia Martínez
- Instituto de Ciencia de Materiales de Madrid (ICMM-CSIC), Materials Science Factory, c/ Sor Juana Inés de la Cruz, 3, Madrid, 28049, Spain
| | - Pieter A A De Beule
- International Iberian Nanotechnology Laboratory (INL), Avenida Mestre José Veiga s/n, 4715-330 Braga, Portugal
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72
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Ku J, Kim S, Park J, Kim TS, Kharbash R, Shin EC, Char K, Kim Y, Li S. Reactive Polymer Targeting dsRNA as Universal Virus Detection Platform with Enhanced Sensitivity. Biomacromolecules 2020; 21:2440-2454. [PMID: 32233463 DOI: 10.1021/acs.biomac.0c00379] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Reactive poly(pentafluorophenyl acrylate) (PPFPA)-grafted surfaces offer a versatile platform to immobilize biomolecules. Here, we utilize PPFPA-grafted surface and double-stranded RNA (dsRNA) recognizing J2 antibody to construct a universal virus detection platform with enhanced sensitivity. PPFPA on silicon substrates is prepared, and surface hydrophilicity is modulated by partial substitution of the pentafluorophenyl units with poly(ethylene glycol). Following dsRNA antibody immobilization, the prepared surfaces can distinguish long dsRNAs from single-stranded RNAs of the same length and short dsRNAs. As long dsRNAs are common byproducts of viral transcription/replication, these surfaces can detect the presence of different kinds of viruses without prior knowledge of their genomic sequences. To increase dsRNA detection sensitivity, a two-step method is devised where the captured dsRNAs are visualized with multiple fluorophore-tagged J2 antibodies. We show that the developed platform can differentiate foreign long dsRNAs from cellular dsRNAs and other biomolecules present in the cell lysate. Moreover, when tested against cells infected with hepatitis A or C viruses, both viruses are successfully detected using a single platform. Our study shows that the developed PPFPA platform immobilized with J2 antibody can serve as a primary diagnostic tool to determine the infection status for a wide range of viruses.
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Affiliation(s)
- Jayoung Ku
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141 South Korea.,KI for Health Science and Technology (KIHST), KAIST, Daejeon 34141 South Korea
| | - Sura Kim
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141 South Korea
| | - Jaemin Park
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141 South Korea
| | - Tae-Shin Kim
- Graduate School of Medical Science and Engineering, KAIST, Daejeon 34141 South Korea
| | - Raisa Kharbash
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141 South Korea.,KI for Health Science and Technology (KIHST), KAIST, Daejeon 34141 South Korea
| | - Eui-Cheol Shin
- Graduate School of Medical Science and Engineering, KAIST, Daejeon 34141 South Korea
| | - Kookheon Char
- School of Chemical and Biological Engineering, Seoul National University, Seoul 08826, South Korea
| | - Yoosik Kim
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141 South Korea.,KI for Health Science and Technology (KIHST), KAIST, Daejeon 34141 South Korea
| | - Sheng Li
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141 South Korea
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73
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Novel organic/inorganic hybrid nanoparticles as enzyme-triggered drug delivery systems: Dextran and Dextran aldehyde coated silica aerogels. J Drug Deliv Sci Technol 2020. [DOI: 10.1016/j.jddst.2020.101517] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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74
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Buxadera-Palomero J, Godoy-Gallardo M, Molmeneu M, Punset M, Gil FJ. Antibacterial Properties of Triethoxysilylpropyl Succinic Anhydride Silane (TESPSA) on Titanium Dental Implants. Polymers (Basel) 2020; 12:E773. [PMID: 32244655 PMCID: PMC7240528 DOI: 10.3390/polym12040773] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Revised: 03/23/2020] [Accepted: 03/28/2020] [Indexed: 11/16/2022] Open
Abstract
Infections related to dental implants are a common complication that can ultimately lead to implant failure, and thereby carries significant health and economic costs. In order to ward off these infections, this paper explores the immobilization of triethoxysilylpropyl succinic anhydride (TESPSA, TSP) silane onto dental implants, and the interaction of two distinct monospecies biofilms and an oral plaque with the coated titanium samples. To this end, titanium disks from prior machining were first activated by a NaOH treatment and further functionalized with TESPSA silane. A porous sodium titanate surface was observed by scanning electron microscopy and X-ray photoelectron spectroscopy analyses confirmed the presence of TESPSA on the titanium samples (8.4% for Ti-N-TSP). Furthermore, a lactate dehydrogenase assay concluded that TESPSA did not have a negative effect on the viability of human fibroblasts. Importantly, the in vitro effect of modified surfaces against Streptococcus sanguinis, Lactobacillus salivarius and oral plaque were studied using a viable bacterial adhesion assay. A significant reduction was achieved in all cases but, as expected, with different effectiveness against simple mono-species biofilm (ratio dead/live of 0.4) and complete oral biofilm (ratio dead/live of 0.6). Nevertheless, this approach holds a great potential to provide dental implants with antimicrobial properties.
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Affiliation(s)
- Judit Buxadera-Palomero
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Engineering, Technical University of Catalonia (UPC), Av. Eduard Maristany, 10-14, 08019 Barcelona, Spain; (J.B.-P.); (M.M.); (M.P.)
- Barcelona Research Centre in Multiscale Science and Engineering, Technical University of Catalonia (UPC), Av. Eduard Maristany, 10-14, 08019 Barcelona, Spain
| | - Maria Godoy-Gallardo
- Bioengineering Institute of Technology (BIT), Universitat Internacional de Catalunya (UIC), C. Josep Trueta s/n, 08195 Sant Cugat del Vallès, Spain;
- Basic Science Department, Faculty of Medicine and Health Science, Universitat Internacional de Catalunya (UIC), C. Josep Trueta s/n, 08195 Sant Cugat del Vallès, Spain
| | - Meritxell Molmeneu
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Engineering, Technical University of Catalonia (UPC), Av. Eduard Maristany, 10-14, 08019 Barcelona, Spain; (J.B.-P.); (M.M.); (M.P.)
- Barcelona Research Centre in Multiscale Science and Engineering, Technical University of Catalonia (UPC), Av. Eduard Maristany, 10-14, 08019 Barcelona, Spain
| | - Miquel Punset
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Engineering, Technical University of Catalonia (UPC), Av. Eduard Maristany, 10-14, 08019 Barcelona, Spain; (J.B.-P.); (M.M.); (M.P.)
- Barcelona Research Centre in Multiscale Science and Engineering, Technical University of Catalonia (UPC), Av. Eduard Maristany, 10-14, 08019 Barcelona, Spain
- UPC Innovation and Technology Center (CIT-UPC), Technical University of Catalonia (UPC), C. Jordi Girona 3-1, 08034 Barcelona, Spain
| | - Francisco Javier Gil
- Bioengineering Institute of Technology (BIT), Universitat Internacional de Catalunya (UIC), C. Josep Trueta s/n, 08195 Sant Cugat del Vallès, Spain;
- School of Dentistry, Faculty of Medicine and Health Science, Universitat Internacional de Catalunya (UIC), C. Josep Trueta s/n, 08195 Sant Cugat del Vallès, Spain
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75
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Preparation of re-entrant and anti-fouling PVDF composite membrane with omniphobicity for membrane distillation. J Memb Sci 2020. [DOI: 10.1016/j.memsci.2019.117563] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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76
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Zhang B, Wang Y, Zhang J, Qiao S, Fan Z, Wan J, Chen K. Well-defined 3-Aminopropyltriethoxysilane functionalized magnetite nanoparticles and their adsorption performance for partially hydrolyzed polyacrylamide from aqueous solution. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2019.124288] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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77
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Imani SM, Maclachlan R, Rachwalski K, Chan Y, Lee B, McInnes M, Grandfield K, Brown ED, Didar TF, Soleymani L. Flexible Hierarchical Wraps Repel Drug-Resistant Gram-Negative and Positive Bacteria. ACS NANO 2020; 14:454-465. [PMID: 31834780 DOI: 10.1021/acsnano.9b06287] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Healthcare acquired infections are a major human health problem, and are becoming increasingly troublesome with the emergence of drug resistant bacteria. Engineered surfaces that reduce the adhesion, proliferation, and spread of bacteria have promise as a mean of preventing infections and reducing the use of antibiotics. To address this need, we created a flexible plastic wrap that combines a hierarchical wrinkled structure with chemical functionalization to reduce bacterial adhesion, biofilm formation, and the transfer of bacteria through an intermediate surface. These hierarchical wraps were effective for reducing biofilm formation of World Health Organization-designated priority pathogens Gram positive methicillin-resistant Staphylococcus aureus (MRSA) and Gram negative Pseudomonas aeruginosa by 87 and 84%, respectively. In addition, these surfaces remain free of bacteria after being touched by a contaminated surface with Gram negative E. coli. We showed that these properties are the result of broad liquid repellency of the engineered surfaces and the presence of reduced anchor points for bacterial adhesion on the hierarchical structure. Such wraps are fabricated using scalable bottom-up techniques and form an effective cover on a variety of complex objects, making them superior to top-down and substrate-specific surface modification methods.
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Affiliation(s)
- Sara M Imani
- McMaster University , School of Biomedical Engineering , 1280 Main Street West , Hamilton , L8S 4L7 , Canada
| | - Roderick Maclachlan
- McMaster University , Department of Engineering Physics , 1280 Main Street West , Hamilton , L8S 4L7 , Canada
| | - Kenneth Rachwalski
- Department of Biochemistry and Biomedical Sciences , McMaster University , Hamilton , ON L8N 3Z5 , Canada
- Michael G. DeGroote Institute of Infectious Disease Research , McMaster University , Hamilton , ON L8N 3Z5 , Canada
| | - Yuting Chan
- McMaster University , Department of Engineering Physics , 1280 Main Street West , Hamilton , L8S 4L7 , Canada
| | - Bryan Lee
- McMaster University , School of Biomedical Engineering , 1280 Main Street West , Hamilton , L8S 4L7 , Canada
| | - Mark McInnes
- OptiSolve ® , Peterborough , ON K9J 6 × 6 , Canada
| | - Kathryn Grandfield
- McMaster University , School of Biomedical Engineering , 1280 Main Street West , Hamilton , L8S 4L7 , Canada
- Department of Materials Science and Engineering , McMaster University , Hamilton , Ontario Canada
| | - Eric D Brown
- Department of Biochemistry and Biomedical Sciences , McMaster University , Hamilton , ON L8N 3Z5 , Canada
- Michael G. DeGroote Institute of Infectious Disease Research , McMaster University , Hamilton , ON L8N 3Z5 , Canada
| | - Tohid F Didar
- McMaster University , School of Biomedical Engineering , 1280 Main Street West , Hamilton , L8S 4L7 , Canada
- Michael G. DeGroote Institute of Infectious Disease Research , McMaster University , Hamilton , ON L8N 3Z5 , Canada
- Department of Mechanical Engineering , McMaster University , Hamilton , Ontario Canada
| | - Leyla Soleymani
- McMaster University , School of Biomedical Engineering , 1280 Main Street West , Hamilton , L8S 4L7 , Canada
- McMaster University , Department of Engineering Physics , 1280 Main Street West , Hamilton , L8S 4L7 , Canada
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78
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Li Y, Jia P, Xu J, Wu Y, Jiang H, Li Z. The Aminosilane Functionalization of Cellulose Nanofibrils and the Mechanical and CO2 Adsorption Characteristics of Their Aerogel. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.9b04253] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yiwen Li
- College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Peipei Jia
- College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Jing Xu
- College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Yu Wu
- College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Hua Jiang
- College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Zhong Li
- National Engineering Research Center of Biomaterials, Nanjing Forestry University, Nanjing 210037, China
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79
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Saengdee P, Promptmas C, Thanapitak S, Srisuwan A, Pankiew A, Thornyanadacha N, Chaisriratanakul W, Chaowicharat E, Jeamsaksiri W. Optimization of 3-aminopropyltriethoxysilane functionalization on silicon nitride surface for biomolecule immobilization. Talanta 2020; 207:120305. [DOI: 10.1016/j.talanta.2019.120305] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Revised: 08/27/2019] [Accepted: 08/29/2019] [Indexed: 10/26/2022]
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80
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Benne N, Leboux RJT, Glandrup M, van Duijn J, Lozano Vigario F, Neustrup MA, Romeijn S, Galli F, Kuiper J, Jiskoot W, Slütter B. Atomic force microscopy measurements of anionic liposomes reveal the effect of liposomal rigidity on antigen-specific regulatory T cell responses. J Control Release 2019; 318:246-255. [PMID: 31812539 DOI: 10.1016/j.jconrel.2019.12.003] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Revised: 12/03/2019] [Accepted: 12/04/2019] [Indexed: 12/21/2022]
Abstract
Regulatory T cells (Tregs) are vital for maintaining a balanced immune response and their dysfunction is often associated with auto-immune disorders. We have previously shown that antigen-loaded anionic liposomes composed of phosphatidylcholine (PC) and phosphatidylglycerol (PG) and cholesterol can induce strong antigen-specific Treg responses. We hypothesized that altering the rigidity of these liposomes while maintaining their size and surface charge would affect their capability of inducing Treg responses. The rigidity of liposomes is affected in part by the length and saturation of carbon chains of the phospholipids in the bilayer, and in part by the presence of cholesterol. We used atomic force microscopy (AFM) to measure the rigidity of anionic OVA323-containing liposomes composed of different types of PC and PG, with or without cholesterol, in a molar ratio of 4:1(:2) distearoyl (DS)PC:DSPG (Young's modulus (YM) 3611 ± 1271 kPa), DSPC:DSPG:CHOL (1498 ± 531 kPa), DSPC:dipalmitoyl (DP)PG:CHOL (1208 ± 538), DPPC:DPPG:CHOL (1195 ± 348 kPa), DSPC:dioleoyl (DO)PG:CHOL (825 ± 307 kPa), DOPC:DOPG:CHOL (911 ± 447 kPa), and DOPC:DOPG (494 ± 365 kPa). Next, we assessed if rigidity affects the association of liposomes to bone marrow-derived dendritic cells (BMDCs) in vitro. Aside from DOPC:DOPG liposomes, we observed a positive correlation between liposomal rigidity and cellular association. Finally, we show that rigidity positively correlates with Treg responses in vitro in murine DCs and in vivo in mice. Our findings underline the suitability of AFM to measure liposome rigidity and the importance of this parameter when designing liposomes as a vaccine delivery system.
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Affiliation(s)
- Naomi Benne
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research, Leiden, the Netherlands
| | - Romain J T Leboux
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research, Leiden, the Netherlands
| | - Marco Glandrup
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research, Leiden, the Netherlands
| | - Janine van Duijn
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research, Leiden, the Netherlands
| | - Fernando Lozano Vigario
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research, Leiden, the Netherlands
| | - Malene Aaby Neustrup
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research, Leiden, the Netherlands
| | - Stefan Romeijn
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research, Leiden, the Netherlands
| | | | - Johan Kuiper
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research, Leiden, the Netherlands
| | - Wim Jiskoot
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research, Leiden, the Netherlands
| | - Bram Slütter
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research, Leiden, the Netherlands.
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81
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Mohseni-Bandpei A, Eslami A, Kazemian H, Zarrabi M, Sadani M. WITHDRAWN: High density (3-aminopropyl) triethoxysilane grafted silica aerogel-based materials for cefixime adsorption: optimization of preparation and grafting method, experimental design, kinetic and equilibrium study. ARAB J CHEM 2019. [DOI: 10.1016/j.arabjc.2019.12.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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82
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Nayak N, Huertas R, Crespo JG, Portugal CA. Surface modification of alumina monolithic columns with 3-aminopropyltetraethoxysilane (APTES) for protein attachment. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2019.115674] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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83
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Spaltro A, Simonetti S, Laurella S, Ruiz D, Compañy AD, Juan A, Allegretti P. Adsorption of bentazone and imazapyc from water by using functionalized silica: Experimental and computational analysis. JOURNAL OF CONTAMINANT HYDROLOGY 2019; 227:103542. [PMID: 31471099 DOI: 10.1016/j.jconhyd.2019.103542] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 08/06/2019] [Accepted: 08/16/2019] [Indexed: 06/10/2023]
Abstract
In this study, silica and functionalized silica materials (3-aminopropyl and 3-mercapto derivatives) were successfully used for the removal of the pesticides bentazone and imazapyc from aqueous solutions. Adsorbent materials were characterized by BET isotherms and FT-IR spectroscopy (confirming the functionalization), and their equilibrium adsorption capacity was evaluated at different ionic strengths. It is observed that the maximum adsorption capacities decrease in the order 3-aminopropyl-derivative > silica >3-mercaptopropyl derivative. An increase in ionic strength produces an enhancement in the removal of pesticides. All isotherms are Ib-type and follow the Langmuir model, suggesting a monolayer physical adsorption process.
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Affiliation(s)
- Agustín Spaltro
- CEDECOR (Centro de Estudio de Compuestos Orgánicos), Facultad de Ciencias Exactas, Universidad Nacional de La Plata (UNLP), Calle 115 y 47, (1900), La Plata, Argentina; CONICET (Consejo Nacional de Investigaciones Científicas y Técnicas), Argentina
| | - Sandra Simonetti
- Instituto de Física del Sur (IFISUR), Departamento de Física, Universidad Nacional del Sur (UNS), CONICET, Av. L. N. Alem 1253, B8000CPB Bahía Blanca, Argentina; Universidad Tecnológica Nacional(UTN), 11 de Abril 461, B8000LMI Bahía Blanca, Argentina; CONICET (Consejo Nacional de Investigaciones Científicas y Técnicas), Argentina.
| | - Sergio Laurella
- CEDECOR (Centro de Estudio de Compuestos Orgánicos), Facultad de Ciencias Exactas, Universidad Nacional de La Plata (UNLP), Calle 115 y 47, (1900), La Plata, Argentina; CIC-BA (Comisión de Investigaciones Científicas de la Provincia de Buenos Aires), Argentina
| | - Danila Ruiz
- CEDECOR (Centro de Estudio de Compuestos Orgánicos), Facultad de Ciencias Exactas, Universidad Nacional de La Plata (UNLP), Calle 115 y 47, (1900), La Plata, Argentina; CONICET (Consejo Nacional de Investigaciones Científicas y Técnicas), Argentina
| | - Andres Diaz Compañy
- Instituto de Física del Sur (IFISUR), Departamento de Física, Universidad Nacional del Sur (UNS), CONICET, Av. L. N. Alem 1253, B8000CPB Bahía Blanca, Argentina; CIC-BA (Comisión de Investigaciones Científicas de la Provincia de Buenos Aires), Argentina
| | - Alfredo Juan
- Instituto de Física del Sur (IFISUR), Departamento de Física, Universidad Nacional del Sur (UNS), CONICET, Av. L. N. Alem 1253, B8000CPB Bahía Blanca, Argentina; CONICET (Consejo Nacional de Investigaciones Científicas y Técnicas), Argentina
| | - Patricia Allegretti
- CEDECOR (Centro de Estudio de Compuestos Orgánicos), Facultad de Ciencias Exactas, Universidad Nacional de La Plata (UNLP), Calle 115 y 47, (1900), La Plata, Argentina
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84
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A Surface Modifier for the Production of Selectively Activated Amino Surface Groups. COATINGS 2019. [DOI: 10.3390/coatings9110726] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The formation of self-assembled monolayers with the possibility of selective activation is an important goal of surface chemistry. In this work, a new surface modifier which creates amino surfaces based on aminopropylsilatrane (APS) with a protected amino group was obtained. The utilization of protected APS allows producing a self-assembled monolayer (SAM) and obtaining reactive surface amino groups at distinct times. Furthermore, a precise selective deprotection with a further modification of the activated amino groups could be performed without affecting the protected groups. To demonstrate the practical applicability of this modifier, a trinitrotoluene-sensitive sensor based on an ion-sensitive field-effect transistor (ISFET) was obtained.
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85
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In Situ IR Study on Effect of Alkyl Chain Length between Amines on Its Stability against Acidic Gases. Catalysts 2019. [DOI: 10.3390/catal9110910] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
For the CO2 capture process via the cyclic adsorption/desorption method, one emerging catalyst is the use of amine-functionalized silica. This study focused on comparing the CO2 capture performance of diamines with ethyl and propyl spacers and the degradation species formed after long-term exposure to various acidic gases such as SO2 and NO2 at elevated temperatures. Adsorbents were prepared via the incipient wetness technique and then subjected to thermogravimetric measurements and in situ FT-IR analyses. 2NS-P/Kona95, which contains a propyl spacer, showed fewer degradation species formed based on its IR spectra and better stability with its long-term exposure to various acidic gases. Thus, the incorporation of amines with a large number of nitrogen groups of propyl or longer spacer length could be a promising CO2 capture material.
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86
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Brittain WJ, Brandsetter T, Prucker O, Rühe J. The Surface Science of Microarray Generation-A Critical Inventory. ACS APPLIED MATERIALS & INTERFACES 2019; 11:39397-39409. [PMID: 31322854 DOI: 10.1021/acsami.9b06838] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Microarrays are powerful tools in biomedical research and have become indispensable for high-throughput multiplex analysis, especially for DNA and protein analysis. The basis for all microarray processing and fabrication is surface modification of a chip substrate and many different strategies to couple probe molecules to such substrates have been developed. We present here a critical assessment of typical biochip generation processes from a surface science point of view. While great progress has been made from a molecular biology point of view on the development of qualitative assays and impressive results have been obtained on the detection of rather low concentrations of DNA or proteins, quantitative chip-based assays are still comparably rare. We argue that lack of stable and reliable deposition chemistries has led in many cases to suboptimal quantitative reproducibility, impeded further progress in microarray development and prevented a more significant penetration of microarray technology into the diagnostic market. We suggest that surface-attached hydrogel networks might be a promising strategy to achieve highly sensitive and quantitatively reproducible microarrays.
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Affiliation(s)
- William J Brittain
- Department of Chemistry & Biochemistry , Texas State University , 601 University Drive , San Marcos , Texas 78666 , United States
- Department of Microsystems Engineering , University of Freiburg , Georges-Köhler-Allee 103 , Freiburg 79110 , Germany
| | - Thomas Brandsetter
- Department of Microsystems Engineering , University of Freiburg , Georges-Köhler-Allee 103 , Freiburg 79110 , Germany
| | - Oswald Prucker
- Department of Microsystems Engineering , University of Freiburg , Georges-Köhler-Allee 103 , Freiburg 79110 , Germany
| | - Jürgen Rühe
- Department of Microsystems Engineering , University of Freiburg , Georges-Köhler-Allee 103 , Freiburg 79110 , Germany
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87
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Yokota S, Kuramochi H, Okubo K, Iwaya A, Tsuchiya S, Ichiki T. Extracellular vesicles nanoarray technology: Immobilization of individual extracellular vesicles on nanopatterned polyethylene glycol-lipid conjugate brushes. PLoS One 2019; 14:e0224091. [PMID: 31648253 PMCID: PMC6812765 DOI: 10.1371/journal.pone.0224091] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Accepted: 10/04/2019] [Indexed: 12/15/2022] Open
Abstract
Arraying individual extracellular vesicles (EVs) on a chip is expected one of the promising approaches for investigating their inherent properties. In this study, we immobilized individual EVs on a surface using a nanopatterned tethering chip-based versatile platform. A microfluidic device was used to ensure soft, reproducible exposure of the EVs over the whole chip surface. The device is incorporated with a high-density nanoarray chip patterned with 200-nm diameter nanospots composed of polyethylene glycol (PEG)-lipid conjugate brushes. We present a procedure adopted for fabricating high-density PEG-lipid modified nanospots (200 nmϕ, 5.0 × 105 spots/mm2 in 2 × 2 mm2 area). This procedure involves nanopatterning using electron beam lithography, followed by multistep selective chemical modification. Aqueous treatment of a silane coupling agent, used as a linker between PEG-lipid molecules and the silicon surface, was the key step that enabled surface modification using a nanopatterned resist film as a mask. The nanoarray chip was removed from the device for subsequent measurements such as atomic force microscopy (AFM). We developed a prototype device and individually immobilized EVs derived from different cell lines (Sk-Br-3 and HEK293) on tethering nanospots. We characterized EV's morphology using AFM and showed the possibility of evaluating the deformability of EVs using the aspect ratio as an indicator.
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Affiliation(s)
- Shusuke Yokota
- Department of Materials Engineering, School of Engineering, The University of Tokyo, Bunkyo, Tokyo, Japan
| | - Hiromi Kuramochi
- Department of Materials Engineering, School of Engineering, The University of Tokyo, Bunkyo, Tokyo, Japan
| | - Kyohei Okubo
- Department of Materials Engineering, School of Engineering, The University of Tokyo, Bunkyo, Tokyo, Japan
| | - Akiko Iwaya
- Department of Materials Engineering, School of Engineering, The University of Tokyo, Bunkyo, Tokyo, Japan
| | | | - Takanori Ichiki
- Department of Materials Engineering, School of Engineering, The University of Tokyo, Bunkyo, Tokyo, Japan
- Innovation Center of NanoMedicine, Kawasaki, Kanagawa, Japan
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88
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Mascarenhas BC, Tavares FA, Paris EC. Functionalized faujasite zeolite immobilized on poly(lactic acid) composite fibers to remove dyes from aqueous media. J Appl Polym Sci 2019. [DOI: 10.1002/app.48561] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Bruno C. Mascarenhas
- Department of ChemistryFederal University of São Carlos (UFSCAR), Rod. Washington Luiz, s/n São Carlos CEP 13565‐905 Brazil
- Nanotechnology National Laboratory for Agriculture (LNNA)Embrapa Instrumentação, Rua XV de Novembro, 1452 São Carlos CEP 13560‐970 Brazil
| | - Francine A. Tavares
- Department of ChemistryFederal University of São Carlos (UFSCAR), Rod. Washington Luiz, s/n São Carlos CEP 13565‐905 Brazil
- Nanotechnology National Laboratory for Agriculture (LNNA)Embrapa Instrumentação, Rua XV de Novembro, 1452 São Carlos CEP 13560‐970 Brazil
| | - Elaine C. Paris
- Nanotechnology National Laboratory for Agriculture (LNNA)Embrapa Instrumentação, Rua XV de Novembro, 1452 São Carlos CEP 13560‐970 Brazil
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89
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Grzegorzewski F, Benhaim A, Itzhaik Alkotzer Y, Zelinger E, Yaakov N, Mechrez G. In situ Fabrication of Multi-Walled Carbon Nanotubes/Silica Hybrid Colloidosomes by Pickering Emulsion Templating Using Trialkoxysilanes of Opposite Polarity. Polymers (Basel) 2019; 11:E1480. [PMID: 31510082 PMCID: PMC6780190 DOI: 10.3390/polym11091480] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Revised: 09/03/2019] [Accepted: 09/07/2019] [Indexed: 11/16/2022] Open
Abstract
A simple and effective way to prepare multi-walled carbon nanotubes (MWNT)//silica hybrid microcapsules (colloidosomes) is presented. These microcapsules have been generated by emulsion templating in a biphasic oil-in-water (o/w) system. Two trialkoxysilanes of complementary polarity, (3-aminopropyl)triethoxysilane (APTES) and dodecyltriethoxysilane (DTES), were used to chemically immobilize the silica nanoparticles at the o/w interface and stabilize the as-generated Pickering emulsions. The effects of varying the o/w ratio and the concentration of the added solids on the type of emulsion formed, the oil droplet size, as well as the emulsion stability have been investigated. The emulsion phase fraction was dependent on the silica content while the droplet size increased with increasing oil volume percentage. A solid shell emerged around the oil droplets from copolymerization between silane monomers. The thickness of the resulting shells was several hundreds of nm. Although MWNTs and silica nanoparticles both were co-assembled at the o/w interface, silica has shown to be the sole stabilizer, with APTES being crucial for the formation of the shell structure. Drop-casting of the emulsion and air-drying led to hierarchical open porous MWNT-silica nanocomposites. These new structures are promising as electrically conductive thin films for variety of applications, such as electro-optics, encapsulation, or chemical sensing.
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Affiliation(s)
- Franziska Grzegorzewski
- Department of Food Quality & Safety, Institute for Postharvest and Food Sciences, Agricultural Research Organization (ARO), Volcani Center, 68 HaMaccabim Road, Rishon LeZion 7505101, Israel; (F.G.); (A.B.); (Y.I.A.); (N.Y.)
| | - Avital Benhaim
- Department of Food Quality & Safety, Institute for Postharvest and Food Sciences, Agricultural Research Organization (ARO), Volcani Center, 68 HaMaccabim Road, Rishon LeZion 7505101, Israel; (F.G.); (A.B.); (Y.I.A.); (N.Y.)
| | - Yafit Itzhaik Alkotzer
- Department of Food Quality & Safety, Institute for Postharvest and Food Sciences, Agricultural Research Organization (ARO), Volcani Center, 68 HaMaccabim Road, Rishon LeZion 7505101, Israel; (F.G.); (A.B.); (Y.I.A.); (N.Y.)
| | - Einat Zelinger
- The Interdepartmental Equipment Unit, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, POB 12, Rehovot 7610001, Israel;
| | - Noga Yaakov
- Department of Food Quality & Safety, Institute for Postharvest and Food Sciences, Agricultural Research Organization (ARO), Volcani Center, 68 HaMaccabim Road, Rishon LeZion 7505101, Israel; (F.G.); (A.B.); (Y.I.A.); (N.Y.)
| | - Guy Mechrez
- Department of Food Quality & Safety, Institute for Postharvest and Food Sciences, Agricultural Research Organization (ARO), Volcani Center, 68 HaMaccabim Road, Rishon LeZion 7505101, Israel; (F.G.); (A.B.); (Y.I.A.); (N.Y.)
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90
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Lunelli L, Caradonna F, Potrich C, Piotto C, Bettotti P, Vanzetti L, Pederzolli C, Guella G. A new silanizing agent tailored to surface bio-functionalization. Colloids Surf B Biointerfaces 2019; 181:166-173. [PMID: 31132608 DOI: 10.1016/j.colsurfb.2019.05.034] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Revised: 04/18/2019] [Accepted: 05/15/2019] [Indexed: 11/28/2022]
Abstract
Amino-terminated surfaces can be effectively obtained by means of silanizing agents, realizing surfaces suitable for the purification of biomarkers of several pathologies. Since the level of biomarkers, such as microRNAs and cell-free DNA, into circulation may be extremely low, new and ameliorated capturing molecules and protocols are highly required. In this work, a new silane, acetone-imine propyl trimethoxysilane (AIPTMS), is synthesized with a simple and elegant reaction, via the nucleophilic addition of the primary amino group to the carbonyl group of acetone. AIPTMS and APTMS were used to silanize silicon oxide surfaces, which were characterized chemically (XPS) and morphologically (AFM). The two types of surfaces were chemically similar, but behaved very differently both for surface morphology and functional properties. The AIPTMS-modified surface was indeed very smooth and homogeneous with respect to the APTMS-modified surface. Moreover, the AIPTMS surface captured larger amounts of nucleic acids almost immediately after preparation, while APTMS-based functional surfaces needed longer time to reach comparable efficiency. AIPTMS shows several advantages over standard aminosilanes, as it realizes a more homogeneous surface coverage that, in turn, produces an improved response towards the capture of nucleic acids. AIPTMS is a very promising reagent for the reliable and reproducible preparation of active biofunctional surfaces for the purification and analysis of circulating biomarkers.
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Affiliation(s)
- L Lunelli
- Fondazione Bruno Kessler, Center for Materials and Microsystems, Lab. Biomarker Studies and Structure Analysis for Health, via Sommarive 18, I-38123 Povo (Trento), Italy; CNR - Consiglio Nazionale delle Ricerche, Istituto di Biofisica, via alla Cascata 56/C, I-38123 Povo (Trento), Italy
| | - F Caradonna
- Fondazione Bruno Kessler, Center for Materials and Microsystems, Lab. Biomarker Studies and Structure Analysis for Health, via Sommarive 18, I-38123 Povo (Trento), Italy; University of Trento, Department of Physics, Bioorgan Chem Lab, Via Sommarive 14, I-38123 Trento, Italy
| | - C Potrich
- Fondazione Bruno Kessler, Center for Materials and Microsystems, Lab. Biomarker Studies and Structure Analysis for Health, via Sommarive 18, I-38123 Povo (Trento), Italy; CNR - Consiglio Nazionale delle Ricerche, Istituto di Biofisica, via alla Cascata 56/C, I-38123 Povo (Trento), Italy.
| | - C Piotto
- University of Trento, Department of Physics, Nanoscience Laboratory, Via Sommarive 14, I-38123 Trento, Italy
| | - P Bettotti
- University of Trento, Department of Physics, Nanoscience Laboratory, Via Sommarive 14, I-38123 Trento, Italy
| | - L Vanzetti
- Fondazione Bruno Kessler, Center for Materials and Microsystems, via Sommarive 18, I-38123 Povo, Trento, Italy
| | - C Pederzolli
- Fondazione Bruno Kessler, Center for Materials and Microsystems, Lab. Biomarker Studies and Structure Analysis for Health, via Sommarive 18, I-38123 Povo (Trento), Italy
| | - G Guella
- University of Trento, Department of Physics, Bioorgan Chem Lab, Via Sommarive 14, I-38123 Trento, Italy; CNR - Consiglio Nazionale delle Ricerche, Istituto di Biofisica, via alla Cascata 56/C, I-38123 Povo (Trento), Italy
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91
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Hänisch J, Hinrichs K, Rappich J. Surface Functionalization toward Biosensing via Free-Standing Si-OH Bonds on Nonoxidized Silicon Surfaces. ACS APPLIED MATERIALS & INTERFACES 2019; 11:31434-31440. [PMID: 31180638 DOI: 10.1021/acsami.9b03583] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Usually hydroxyl groups present on top of oxidized silicon served as binding centers for a silanization reaction toward surface functionalization. In this study, we developed a novel surface functionalization strategy where hydroxyl functionalization on nonoxidized silicon surfaces are obtained. These surfaces were stable for several weeks even in ambient air at room temperature. This high stability indicates a strong spatial isolation of the hydroxyl groups because they keenly tend to undergo a condensation reaction, forming silicon oxide. To prove the applicability of the obtained hydroxylated silicon surface, we further modified the hydroxyl groups with a commonly used silane molecule, (3-aminopropyl)triethoxysilane (APTES). The functional amino groups of the APTES layer bonded to the surface were subsequently altered by N-maleoyl-β-alanin to generate a surface highly specific for the immobilization of thiol-containing biomolecules (like thiolated single-stranded DNA or cysteine-tagged proteins). All modification steps have been investigated by IR spectroscopic ellipsometry measurements.
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Affiliation(s)
- J Hänisch
- Helmholtz-Zentrum Berlin für Materialien und Energie GmbH , Institut für Silizium-Photovoltaik , Kekuléstraße 5 , 12489 Berlin , Germany
| | - K Hinrichs
- Leibniz-Institut für Analytische Wissenschaften (ISAS) eV , Schwarzschildstraße 8 , 12489 Berlin , Germany
| | - J Rappich
- Helmholtz-Zentrum Berlin für Materialien und Energie GmbH , Institut für Silizium-Photovoltaik , Kekuléstraße 5 , 12489 Berlin , Germany
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92
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Calcium-Mediated Biophysical Binding of Cryptosporidium parvum Oocysts to Surfaces Is Sensitive to Oocyst Age. Appl Environ Microbiol 2019; 85:AEM.00816-19. [PMID: 31253676 DOI: 10.1128/aem.00816-19] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2019] [Accepted: 06/14/2019] [Indexed: 12/19/2022] Open
Abstract
Cryptosporidium parvum causes potentially life-threatening gastrointestinal disease in humans and may not be effectively removed from drinking water via conventional methods. Prior research has shown that environmental biofilms immobilize oocysts from the water column, but the biophysical mechanisms driving this attraction are still under investigation. This study investigates the affinity of C. parvum oocysts to silanized surfaces. Surfaces were prepared with hydroxyl, amine, and carboxyl moieties. Binding forces between the oocysts and these engineered substrates were analyzed, with and without divalent ions, using atomic force microscopy. Binding forces were measured over several weeks to investigate the influence of age on adhesion. C. parvum oocysts bind most strongly to carboxylic acid functional groups, with rupture forces greater than that required to break noncovalent molecular bonds, regardless of oocyst age. This adhesion is shown to be due to divalent cation bridging mechanisms. In addition, the binding strength increases over a 5-week period as the oocysts age, followed by a decrease in the binding strength, which may be related to structural or biochemical changes in the outer wall-bound glycosylated proteins. This study sheds new light on the biochemical parameters that influence C. parvum oocyst binding to surfaces. Increased understanding of how age and water chemistry influence the binding strength of oocysts may inform future developments in environmental detection and drinking water treatment, such as with the development of oocyst-specific sensors that allow for more frequent tracking of oocysts in the environment.IMPORTANCE The mechanisms by which pathogens bind to surfaces are of interest to a wide variety of scientific communities, as these mechanisms drive infectivity, fate, and transport of the pathogenic organisms. This study begins to reveal the mechanism of direct binding of Cryptosporidium parvum to surfaces containing both carboxylic acid and amine moieties, in an attempt to understand how much of the binding ability is due to long-range electrostatic forces versus other mechanisms (specific or nonspecific) of bonding. In addition to improving the scientific understanding of fate and transport of oocysts, an expanded understanding of the binding mechanisms may aid in the development of new tools and sensors designed to detect and track oocysts in waterways. Furthermore, the methods used to examine binding in this study could be translated to other waterborne pathogens of interest.
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93
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Recovery of Polyphenols from Grape Pomace Using Polyethylene Glycol (PEG)-Grafted Silica Particles and PEG-Assisted Cosolvent Elution. Molecules 2019; 24:molecules24122199. [PMID: 31212800 PMCID: PMC6630576 DOI: 10.3390/molecules24122199] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Revised: 06/04/2019] [Accepted: 06/11/2019] [Indexed: 01/07/2023] Open
Abstract
Adsorption on a functionalized surface can be an effective way of purifying polyphenols from complex plant extracts. Polymeric resins that rely on hydrophobic interactions suffer from low selectivity, weak affinity towards polyphenols, and lack tunability therefore making the purification of polyphenols less efficient. In this study, a purification process for the recovery of polyphenols from grape pomace extract was successfully developed using hydrogen bonding affinity ligands grafted on silica particles and PEG-assisted elution solvents. Bare silica (SiO2) and polyethylene glycol (mPEG)-grafted silica microparticles with molecular weights of 2000 and 5000 were tested to determine their polyphenol binding and release characteristics. Functionalizing the surface of bare silica with mPEG ligands increased the adsorption capacity by 7.1- and 11.4-fold for mPEG-2000 and mPEG-5000 compared to bare silica particles, respectively. This was likely due to the introduction of more polyphenol binding sites with mPEG functionalization. Altering the molecular weight (MW) of mPEG grafted on silica surfaces provided tunability in the adsorption capacity. A complete recovery of polyphenols (~99.9%) from mPEG-grafted silica particles was achieved by utilizing PEG–ethanol or PEG–water cosolvent systems. Recovered polyphenols showed up to ~12-fold antioxidant activity compared to grape pomace extract. This study demonstrates that mPEG-grafted silica particles and elution of polyphenols with PEG cosolvents can potentially be used for large-scale purification of polyphenols from complex plant extracts and simplify the use of polyphenols, as PEG facilitates remarkable solvation and is an ideal medium for the final formulation of polyphenols.
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94
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Abstract
This paper describes a simple method to pattern nanoparticles on planar surfaces using the antifouling property of poly(ethylene glycol) monolayers deposited from a solution on the native oxide of titanium. Atomic force microcopy was used to pattern the poly(ethylene glycol) monolayers producing protein active sites on the protein-resistant surface. Patterns with different sizes have been generated by shaving the monolayers with different repetitions. Friction force microscopy was used to image the patterns. The smallest patterns are 50 nm and the largest patterns are 500 nm at full width half maximum. The smallest pattern was produced with one shave, whereas the largest pattern was produced by shaving the monolayers 112 times. Protein-coated nanoparticles were immobilised on the shaved (protein active) part of the monolayers by dipping the patterned samples into a solution that contains 2% by volume protein-functionalized nanoparticles with a nominal diameter of 40 nm. Atomic force microscopy was used to take a topographic image of the samples. The topographic image showed that the protein-functionalized nanoparticles were attached onto the shaved part of the substrate but not on the poly(ethylene glycol)-covered part of the substrate. The level of aggregation of the nanoparticles was also investigated from the topographic image. The section analysis of the topographic image of the nanoparticle patterns showed a height of 40 nm which proved that only a monolayer of particles were deposited on the shaved part of the monolayer.
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95
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Miethe JF, Lübkemann F, Bigall NC, Dorfs D. Photoluminescence Lifetime Based Investigations of Linker Mediated Electronic Connectivity Between Substrate and Nanoparticle. Front Chem 2019; 7:207. [PMID: 31024893 PMCID: PMC6467932 DOI: 10.3389/fchem.2019.00207] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Accepted: 03/18/2019] [Indexed: 12/02/2022] Open
Abstract
The evolution of systems based on nanoparticles as the main component seems to be a self-accelerating process during the last five decades. Hence, an overview across this field gets more and more challenging. It is sometimes rewarding to focus on the fundamental physical phenomenon of the electronic interconnection between the different building blocks of the obtained devices. Therefore, the investigation of charge transport among the utilized particles and their substrate is one of the mandatory steps in the development of semiconductor nanoparticle based devices like e.g., sensors and LEDs. The investigation of the influence of tunneling barriers on the properties of nanoparticle-functionalized surfaces is a challenging task. The different basic influences on the charge transport dynamics are often difficult to separate from each other. Non-invasive and easily viable experiments are still required to resolve the charge distributing mechanisms in the systems. In the presented work, we want to focus on thin and transparent indium tin oxide (ITO) layers covered glass slides since this substrate is frequently utilized in nanoelectronics. CdSe/CdS nanorods (NRs) are applied as an optically addressable probe for the electronic surface states of the conductive glass. The presented experimental design provides the proof of electronic interconnections in ITO coated glass/linker/NR electrodes via easy reproducible functionalization and polishing experiments. UV/Vis absorption and photoluminescence (PL) lifetime measurements revealed changes in the optical properties caused by differences in the charge carrier dynamics between the system. Our work is focused on the modification of charge carrier dynamics due to the application of linker molecules with different functional groups like (3-mercaptopropyl)methoxysilane (MPTMS) and (3-aminopropyl)trimethoxysilane (APTMS). The presented observations are explained with a simple kinetic model.
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Affiliation(s)
- Jan F Miethe
- Institute of Physical Chemistry and Electrochemistry, Leibniz Universität Hannover, Hannover, Germany
| | - Franziska Lübkemann
- Institute of Physical Chemistry and Electrochemistry, Leibniz Universität Hannover, Hannover, Germany
| | - Nadja C Bigall
- Institute of Physical Chemistry and Electrochemistry, Leibniz Universität Hannover, Hannover, Germany
| | - Dirk Dorfs
- Institute of Physical Chemistry and Electrochemistry, Leibniz Universität Hannover, Hannover, Germany
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96
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Rahmati M, Mozafari M. Selective Contribution of Bioactive Glasses to Molecular and Cellular Pathways. ACS Biomater Sci Eng 2019; 6:4-20. [PMID: 33463236 DOI: 10.1021/acsbiomaterials.8b01078] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Over the past few decades, biomedical scientists and surgeons have given substantial attention to bioactive glasses as promising, long-lasting biomaterials that can make chemical connections with the neighboring hard and soft tissues. Several studies have examined the cellular and molecular responses to bioactive glasses to determine if they are suitable biomaterials for tissue engineering and regenerative medicine. In this regard, different ions and additives have been used recently to induce specific characteristics for selective cellular and molecular responses. This Review briefly describes foreign-body response mechanisms and the role of adsorbed proteins as the key players in starting interactions between cells and biomaterials. It then explains the physicochemical properties of the most common bioactive glasses, which have a significant impact on their cellular and molecular responses. It is expected that, with the development of novel strategies, the physiochemical properties of bioactive glasses can be engineered to precisely control proteins' adsorption and cellular functions after implantation.
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Affiliation(s)
- Maryam Rahmati
- Department of Biomaterials, Institute of Clinical Dentistry, University of Oslo, 0317 Oslo, Norway
| | - Masoud Mozafari
- Bioengineering Research Group, Nanotechnology and Advanced Materials Department, Materials and Energy Research Center (MERC), Tehran 14155-4777, Iran.,Cellular and Molecular Research Center, Iran University of Medical Sciences, Tehran 144961-4535, Iran.,Department of Tissue Engineering & Regenerative Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, 144961-4535 Tehran, Iran
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97
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Arreola J, Keusgen M, Schöning MJ. Toward an immobilization method for spore-based biosensors in oxidative environment. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2019.01.148] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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98
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Terracciano M, Stefano L, Tortiglione C, Tino A, Rea I. In Vivo Toxicity Assessment of Hybrid Diatomite Nanovectors Using
Hydra vulgaris
as a Model System. ACTA ACUST UNITED AC 2019; 3:e1800247. [DOI: 10.1002/adbi.201800247] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Revised: 02/08/2019] [Indexed: 11/06/2022]
Affiliation(s)
- Monica Terracciano
- Institute for Microelectronics and MicrosystemsNational Research Council Via P. Castellino 111 80131 Naples Italy
- Materias S.r.l. Corso N. Protopisani 50 80146 Naples Italy
| | - Luca Stefano
- Institute for Microelectronics and MicrosystemsNational Research Council Via P. Castellino 111 80131 Naples Italy
| | - Claudia Tortiglione
- Institute of Applied Sciences and Intelligent SystemsNational Research Council Via Campi Flegrei 34, Pozzuoli 80078 Naples Italy
| | - Angela Tino
- Institute of Applied Sciences and Intelligent SystemsNational Research Council Via Campi Flegrei 34, Pozzuoli 80078 Naples Italy
| | - Ilaria Rea
- Institute for Microelectronics and MicrosystemsNational Research Council Via P. Castellino 111 80131 Naples Italy
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99
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Liang X, Chen M, Wang Q, Guo S, Yang H. Ethanol-Precipitable, Silica-Passivated Perovskite Nanocrystals Incorporated into Polystyrene Microspheres for Long-Term Storage and Reusage. Angew Chem Int Ed Engl 2019; 58:2799-2803. [PMID: 30637894 DOI: 10.1002/anie.201814547] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2018] [Indexed: 11/09/2022]
Abstract
Perovskite nanocrystals (PNCs) are emerging luminescent materials due to their fascinating physic-optical properties. However, their sensitive surface chemistry with organic polar solvents, oxygen, and moisture greatly hinders their developments towards practical applications. Herein we promote silica-passivated PNCs (SP-PNCs) by in situ hydrolyzing the surface ligands of (3-aminopropyl) triethoxysilane. The resultant SP-PNCs possesses a high quantum yield (QY) of 80 % and are precipitable by polar solvents, such as ethanol and acetone, without destroying their surface chemistry or losing QY, which offers an eco-friendly and efficient method for separation, purification, and phase transfer of PNCs. Moreover, we further promoted a swelling-deswelling encapsulation process to incorporate the as-made SP-PNCs into non-crosslinked polystyrene microspheres (PMs), which can largely increase the stability of the SP-PNCs against moisture for long-term storage.
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Affiliation(s)
- Xiao Liang
- Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, 100871, China
| | - Mei Chen
- Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, 100871, China
| | - Qian Wang
- Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, 100871, China
| | - Shaojun Guo
- Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, 100871, China.,BIC-ESAT, College of Engineering, Peking University, Beijing, 100871, China
| | - Huai Yang
- Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, 100871, China
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100
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Liang X, Chen M, Wang Q, Guo S, Yang H. Ethanol‐Precipitable, Silica‐Passivated Perovskite Nanocrystals Incorporated into Polystyrene Microspheres for Long‐Term Storage and Reusage. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201814547] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Xiao Liang
- Department of Materials Science and EngineeringCollege of EngineeringPeking University Beijing 100871 China
| | - Mei Chen
- Department of Materials Science and EngineeringCollege of EngineeringPeking University Beijing 100871 China
| | - Qian Wang
- Department of Materials Science and EngineeringCollege of EngineeringPeking University Beijing 100871 China
| | - Shaojun Guo
- Department of Materials Science and EngineeringCollege of EngineeringPeking University Beijing 100871 China
- BIC-ESATCollege of EngineeringPeking University Beijing 100871 China
| | - Huai Yang
- Department of Materials Science and EngineeringCollege of EngineeringPeking University Beijing 100871 China
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