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Journal articles on the topic 'Polymer sensor; Self-assembly'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Medeiros, E. S., R. Bernardes Filho, R. A. Martinez, R. Gregorio Filho, and L. H. C. Mattoso. "Atomic Force Microscopy (AFM) Studies of Cured Self-Assembled Films for Chemical Sensor Applications." Microscopy and Microanalysis 11, S03 (2005): 114–17. http://dx.doi.org/10.1017/s1431927605051020.

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The use of ultrathin polymer films as sensoactive layers in chemical sensors has received great interest in recent years due to many advantages such as the wide choice of polymeric system (polymer types and/or combination, dopants in conducting polymers, etc), and the possibility of tailoring the properties of these films in terms of sensitivity and selectivity by an efficient control of the film formation process [1]. Among the techniques used for ultrathin films formation, self-assembly (SA) offers several advantages since the substrate can take any form and size, deposition time is independ

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Kim, Soyeon, Huie Zhu, Ali Demirci, Shunsuke Yamamoto, Tokuji Miyashita, and Masaya Mitsuishi. "Cyclosiloxane polymer bearing dynamic boronic acid: synthesis and bottom-up nanocoating." Polymer Chemistry 10, no. 38 (2019): 5228–35. http://dx.doi.org/10.1039/c9py00855a.

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Boronic acid-containing polycyclosiloxane showed unique self-assembly nanofilm formation (6 nm film thickness) on various substrates and provided film-based metal ion sensor capability through dynamic covalent bonding.

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Jambhulkar, Sayli, Weiheng Xu, Rahul Franklin, Dharneedar Ravichandran, Yuxiang Zhu, and Kenan Song. "Integrating 3D printing and self-assembly for layered polymer/nanoparticle microstructures as high-performance sensors." Journal of Materials Chemistry C 8, no. 28 (2020): 9495–501. http://dx.doi.org/10.1039/d0tc02660c.

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4

Hughes, Natalie, Nancy Nguyen, Deanna-Kaye Daley, Justin Grennell, Amira Gee, and Mehnaaz F. Ali. "Comparison of DNAzyme activity for the development of an immobilized heme sensor." MRS Advances 3, no. 26 (2018): 1491–96. http://dx.doi.org/10.1557/adv.2017.637.

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ABSTRACTPoint-of-care systems require highly sensitive, quantitative and selective detection platforms for the real-time multiplexed monitoring of target analytes. To ensure facile development of a sensor, it is preferable for the detection assay to have minimal chemical complexity, contain no wash steps and provide a wide and easily adaptable detection range for multiple targets. Current studies involve label-free detection strategy for relevant clinical molecules such as heme using G-quadruplex based self-assembly. We have explored the measurement of binding and kinetic parameters of various

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Villa, Marco, Myriam Roy, Giacomo Bergamini, Marc Gingras, and Paola Ceroni. "A turn-on phosphorescent sensor of Pb2+ in water by the formation of a coordination polymer." Dalton Transactions 48, no. 12 (2019): 3815–18. http://dx.doi.org/10.1039/c9dt00251k.

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Persulfurated asterisks functionalized with six carboxylic groups form a strongly green phosphorescent coordination polymer upon addition of Pb<sup>2+</sup> ions in aqueous solution. The self-assembly process is selective and reversible, enabling Pb<sup>2+</sup> sensing with a detection limit of 6.0 × 10<sup>−7</sup> M.

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Hou, Zhi-lin, Tong Huang, Cai-yun Cai, et al. "Polymer vesicle sensor through the self-assembly of hyperbranched polymeric ionic liquids for the detection of SO2 derivatives." Chinese Journal of Polymer Science 35, no. 5 (2017): 602–10. http://dx.doi.org/10.1007/s10118-017-1921-x.

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7

Singh, Jyoti, Rintu Banerjee, and Basudam Adhikari. "Poly(aniline-co-m-aminobenzoic acid): A Novel Ester Vapor Sensor and its Thin Film Deposition on Silane Functionalized SAM Glass Surface." Advanced Materials Research 1123 (August 2015): 92–95. http://dx.doi.org/10.4028/www.scientific.net/amr.1123.92.

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In recent years, a great deal of attention has been paid on coating the surface of glass and related inorganic substrate with a layer of polymers having special properties to prepare various functional materials. On a smooth surface of glass, the adhesion of a conductive polymer is generally poor. The increase of the surface adhesion was achieved through a chemical pre-treatment. One of the method is to generate a self-assembly monolayer or patterned SAM monolayer to increase the surface adhesion property of glass surface towards polymer solutions [1,2]. Self-assembled monolayers (SAMs) are mo

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8

Rañola, Rey Alfred G., Isabella Concina, Elisabetta Comini, Fortunato B. Sevilla, and Giorgio Sberveglieri. "Preparation and Characterisation of Surface Adsorbed Reduced Graphene Oxide/Polyaniline Nanocomposite on Polymer Membrane for Trimethylamine Sensing." Advanced Materials Research 1119 (July 2015): 24–28. http://dx.doi.org/10.4028/www.scientific.net/amr.1119.24.

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A graphene/polyaniline (rGO/PANi) nanocomposite was synthesized by solution blending method and deposited on to a nylon-6 membrane via vacuum assisted self-assembly (VASA) method to fabricate a flexible material applied as a chemoresistive gas sensor for trimethylamine (TMA). The morphological and structural characterization of surfaced adsorbed polymer nanocomposite was carried out by FT-IR, SEM, UV-Vis and surface profilometry. While, electrical property was carried out by four-point probe measurement. Prepared rGO/PANi nanocomposite has a percolation threshold around 0.40% vol. fraction, wi

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Zhao, Wei, Bing Li, Sheng Xu, et al. "Electrochemical protein recognition based on macromolecular self-assembly of molecularly imprinted polymer: a new strategy to mimic antibody for label-free biosensing." Journal of Materials Chemistry B 7, no. 14 (2019): 2311–19. http://dx.doi.org/10.1039/c9tb00220k.

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10

Zhang, Dongzhi, Jun Tong, and Bokai Xia. "Humidity-sensing properties of chemically reduced graphene oxide/polymer nanocomposite film sensor based on layer-by-layer nano self-assembly." Sensors and Actuators B: Chemical 197 (July 2014): 66–72. http://dx.doi.org/10.1016/j.snb.2014.02.078.

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11

Jang, A., K. K. Lee, P. L. Bishop, I. S. Kim, and C. H. Ahn. "Development of polymer lab-on-a-chip (LOC) for oxidation-reduction potential (ORP) measurement." Water Science and Technology 63, no. 10 (2011): 2309–15. http://dx.doi.org/10.2166/wst.2011.645.

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Reverse osmosis (RO) desalination has been recognized as a promising method to solve the water shortage problem. Nevertheless, since it is energy intensive and has many problems associated with biofouling/fouling of RO membranes in RO plants, its commercial acceptance is still slow. Especially, as high levels of oxidizing agents negatively affect RO membrane efficiency and life span. So, there is a need to develop sensitive, selective, portable and rapid methods to determine oxidation-reduction potential (ORP) in feed solution. For developing a polymer ORP lab-on-a- chip (LOC), a microchannel

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12

Wu, Han, Zhong Ma, Zixia Lin, Haizeng Song, Shancheng Yan, and Yi Shi. "High-Sensitive Ammonia Sensors Based on Tin Monoxide Nanoshells." Nanomaterials 9, no. 3 (2019): 388. http://dx.doi.org/10.3390/nano9030388.

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Ammonia (NH3) is a harmful gas contaminant that is part of the nitrogen cycle in our daily lives. Therefore, highly sensitive ammonia sensors are important for environmental protection and human health. However, it is difficult to detect low concentrations of ammonia (≤50 ppm) using conventional means at room temperature. Tin monoxide (SnO), a member of IV–VI metal monoxides, has attracted much attention due to its low cost, environmental-friendly nature, and higher stability compared with other non-oxide ammonia sensing material like alkaline metal or polymer, which made this material an idea

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13

Zhou, Zhi, and Zhenzhen Wang. "An Experimental Investigation on Flexural Behavior of Reinforced Concrete Beams Strengthened by an Intelligent CFRP Plate with Built-In Optical Fiber Bragg Grating Sensors." Journal of Sensors 2018 (July 16, 2018): 1–16. http://dx.doi.org/10.1155/2018/4271751.

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The difficulties induced from high-durability package, large-scale measurement, and sensor installation make it a big challenge but an urgent need to predict the mechanical behavior of strengthened reinforced concrete structure with the externally bonded fiber-reinforced polymer (FRP) plate under harsh environments and rough construction process. In an effort to solve this challenge, this paper proposes a novel end anchored self-sensing CFRP plate assembly with built-in optical fiber Bragg grating (FBG) sensor. The self-sensing principle is presented and a demonstration test was carried out in

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14

Tseng, Wei-Bin, Yu-Ting Lu, Shi-Wei Zhan, and Wei-Lung Tseng. "Self-assembly of c-di-GMP, Tb3+, and Ag+ into high-quantum-yield coordination polymer nanoparticles: Mechanism discussion and application as a c-di-GMP sensor." Sensors and Actuators B: Chemical 312 (June 2020): 127960. http://dx.doi.org/10.1016/j.snb.2020.127960.

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15

Kovacs, Balint, and Robert Horvath. "Modeling of Label-Free Optical Waveguide Biosensors with Surfaces Covered Partially by Vertically Homogeneous and Inhomogeneous Films." Journal of Sensors 2019 (March 31, 2019): 1–11. http://dx.doi.org/10.1155/2019/1762450.

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Optical Waveguide Lightmode Spectroscopy (OWLS) is widely applied to monitor protein adsorption, polymer self-assembly, and living cells on the surface of the sensor in a label-free manner. Typically, to determine the optogeometrical parameters of the analyte layer (adlayer), the homogeneous and isotropic thin adlayer model is used to analyze the recorded OWLS data. However, in most practical situations, the analyte layer is neither homogeneous nor isotropic. Therefore, the measurement with two waveguide modes and the applied model cannot supply enough information about the parameters of the p

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16

Zamiri, Golnoush, and A. S. M. A. Haseeb. "Recent Trends and Developments in Graphene/Conducting Polymer Nanocomposites Chemiresistive Sensors." Materials 13, no. 15 (2020): 3311. http://dx.doi.org/10.3390/ma13153311.

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The use of graphene and its derivatives with excellent characteristics such as good electrical and mechanical properties and large specific surface area has gained the attention of researchers. Recently, novel nanocomposite materials based on graphene and conducting polymers including polyaniline (PANi), polypyrrole (PPy), poly (3,4 ethyldioxythiophene) (PEDOT), polythiophene (PTh), and their derivatives have been widely used as active materials in gas sensing due to their unique electrical conductivity, redox property, and good operation at room temperature. Mixing these two materials exhibit

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17

Chen, Yihuang, Zewei Wang, Yanjie He, et al. "Light-enabled reversible self-assembly and tunable optical properties of stable hairy nanoparticles." Proceedings of the National Academy of Sciences 115, no. 7 (2018): E1391—E1400. http://dx.doi.org/10.1073/pnas.1714748115.

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The ability to dynamically organize functional nanoparticles (NPs) via the use of environmental triggers (temperature, pH, light, or solvent polarity) opens up important perspectives for rapid and convenient construction of a rich variety of complex assemblies and materials with new structures and functionalities. Here, we report an unconventional strategy for crafting stable hairy NPs with light-enabled reversible and reliable self-assembly and tunable optical properties. Central to our strategy is to judiciously design amphiphilic star-like diblock copolymers comprising inner hydrophilic blo

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18

Cao, Liu, and Dong Zhang. "Preparation of Graphene/Polymer Composite Sponge for Pressure-Sensing Application." Advanced Composites Letters 27, no. 4 (2018): 096369351802700. http://dx.doi.org/10.1177/096369351802700403.

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The graphene/polymer composite sponge was prepared by self-assembly of water-soluble chloroprene on 3D graphene sponge and freeze drying. The composite sponge possesses 3D interconnected skeleton structure. This unique structure not only maintains the physical properties of graphene sponge, but also effectively transfers load from graphene sponge to polymer skeletons under compressive deformations. The composite sponge shows promising applications in pressure-sensing sensors.

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19

Liu, Kai-Hsi, Danny O’Hare, James L. Thomas, Han-Zhang Guo, Chien-Hsin Yang, and Mei-Hwa Lee. "Self-assembly Synthesis of Molecularly Imprinted Polymers for the Ultrasensitive Electrochemical Determination of Testosterone." Biosensors 10, no. 3 (2020): 16. http://dx.doi.org/10.3390/bios10030016.

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Molecularly imprinted polymers (MIPs) can often bind target molecules with high selectivity and specificity. When used as MIPs, conductive polymers may have unique binding capabilities; they often contain aromatic rings and functional groups, which can undergo π-π and hydrogen bonding interactions with similarly structured target (or template) molecules. In this work, an electrochemical method was used to optimize the synthetic self-assembly of poly(aniline-co-metanilic acid) and testosterone, forming testosterone-imprinted electronically conductive polymers (TIECPs) on sensing electrodes. The

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20

Liu, Yang, Jianchao Deng, Yamei Wang, Xiaoyang Zhan, Deyuan Zhang, and Huawei Chen. "Self-Assembly of Self-Cleaning Polystyrene/Styrene-Butadiene-Styrene Films with Well-Ordered Micro-Structures." Coatings 10, no. 11 (2020): 1133. http://dx.doi.org/10.3390/coatings10111133.

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Well-ordered porous films have been widely applied in various areas, such as chemical sensors, microreactors, and tissue engineering. In this article, we propose a novel air-liquid interface self-assembly method to fabricate well-ordered porous polystyrene (PS)/styrene–butadiene–styrene (SBS) films by simply dipping the PS/SBS chloroform solutions onto the surface of a mixed water/ethanol liquid phase. The proper volume ratio of water/ethanol is necessary for the formation of films with highly uniform pore size. The effect of weight ratio of PS/SBS, the volume ratio of water/ethanol and the co

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21

Zhou, Hong, Xue-guang Qiao, Shao-Jun, Hong-liang Wang, and De-quan Feng. "Influence of coupling agent’s self-assembly upon performance of polymer coated FBG pressure sensors." Optoelectronics Letters 2, no. 5 (2006): 329–33. http://dx.doi.org/10.1007/bf03033514.

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22

Lépinay, Sandrine, Guillaume Laffont, Pierre Ferdinand, Marie Claude Millot, and Benjamin Carbonnier. "Cyclodextrin-Based Supramolecular Multilayer Assemblies for the Design of Chemical Optical Sensors Using Tilted Fiber Bragg Gratings." Key Engineering Materials 495 (November 2011): 49–52. http://dx.doi.org/10.4028/www.scientific.net/kem.495.49.

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In this work, we demonstrate the possibility to use optical fiber incorporating photowritten tilted fiber Bragg gratings (TFBG) as optical detection system for the real time monitoring of interfacial adsorption events. For this purpose, immobilization of cyclodextrin polymers onto the surface of optical fiber was envisioned through the layer-by-layer self-assembly method with the aim of developing sensing layers with well-defined host properties. To verify the feasibility of our strategy, fluorescence microscopy was applied to evidence the effective inclusion of fluorescent molecular, toluene,

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23

Chen, Guoning, Hua Shu, Lu Wang, et al. "Facile one-step targeted immobilization of an enzyme based on silane emulsion self-assembled molecularly imprinted polymers for visual sensors." Analyst 145, no. 1 (2020): 268–76. http://dx.doi.org/10.1039/c9an01777a.

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24

Xu, Jianhua, Yadong Jiang, Yajie Yang, and Junsheng Yu. "Self-assembly of conducting polymer nanowires at air–water interface and its application for gas sensors." Materials Science and Engineering: B 157, no. 1-3 (2009): 87–92. http://dx.doi.org/10.1016/j.mseb.2008.12.015.

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25

Lemon, Christopher M. "Optical oxygen sensing with quantum dot conjugates." Pure and Applied Chemistry 90, no. 9 (2018): 1359–77. http://dx.doi.org/10.1515/pac-2018-0303.

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Abstract The ability to track and quantify changes in oxygen concentration as a function of disease progression or therapy is crucial to advance targeted chemotherapeutics. New non-invasive sensors must be developed that are small enough to penetrate into tissue and monitor dynamic changes with high resolution in real time. One way to address this challenge is with the use of nanoparticle-based sensors. This review details the design, synthesis, and characterization of optical oxygen sensors that combine a fluorescent semiconductor quantum dot (QD) with an oxygen-responsive phosphorescent mole

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26

Lépinay, Sandrine, Guillaume Laffont, Giséle Volet, et al. "Cyclodextrin-Based Supramolecular Multilayer Assemblies for the Design of Biological Optical Sensors Using Tilted Fiber Bragg Gratings." Key Engineering Materials 495 (November 2011): 45–48. http://dx.doi.org/10.4028/www.scientific.net/kem.495.45.

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In this work, we demonstrate the possibility to use optical fiber incorporating photowritten tilted fiber Bragg gratings (TFBG) as optical detection system for the real time monitoring of interfacial adsorption events and biological recognition. For this purpose, immobilization of cyclodextrin polymers onto the surface of optical fiber was envisioned through the layer-by-layer self-assembly method with the aim of developing sensing layers with well-defined host properties. To develop a biological sensor, amphiphilic dextran, acting as intermediate layer between the polyelectrolyte multilayer a

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27

McIntosh, J. Trevor, Ali Nazemi, Colin V. Bonduelle, Sebastien Lecommandoux, and Elizabeth R. Gillies. "Synthesis, self-assembly, and degradation of amphiphilic triblock copolymers with fully photodegradable hydrophobic blocks." Canadian Journal of Chemistry 93, no. 1 (2015): 126–33. http://dx.doi.org/10.1139/cjc-2014-0263.

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The development of stimuli-responsive materials is of significant interest for many applications including drug delivery, medical imaging, sensors, and microfluidic devices. Among the available stimuli, light is particularly attractive as it can be applied with high spatial and temporal resolution. We describe here the synthesis of amphiphilic triblock copolymers composed of poly(ethylene glycol) and a hydrophobic block containing o-nitrobenzyl esters throughout the backbone using copper-catalyzed azide–alkyne cycloaddition chemistry. These materials were designed to have a high weight fractio

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28

Roy, Madhuparna, Phong Tran, Tarik Dickens, and Amanda Schrand. "Composite Reinforcement Architectures: A Review of Field-Assisted Additive Manufacturing for Polymers." Journal of Composites Science 4, no. 1 (2019): 1. http://dx.doi.org/10.3390/jcs4010001.

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The demand for additively manufactured polymer composites with increased specific properties and functional microstructure has drastically increased over the past decade. The ability to manufacture complex designs that can maximize strength while reducing weight in an automated fashion has made 3D-printed composites a popular research target in the field of engineering. However, a significant amount of understanding and basic research is still necessary to decode the fundamental process mechanisms of combining enhanced functionality and additively manufactured composites. In this review, exter

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Ge, Shenguang, Congcong Zhang, Feng Yu, Mei Yan, and Jinghua Yu. "Layer-by-layer self-assembly CdTe quantum dots and molecularly imprinted polymers modified chemiluminescence sensor for deltamethrin detection." Sensors and Actuators B: Chemical 156, no. 1 (2011): 222–27. http://dx.doi.org/10.1016/j.snb.2011.04.024.

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30

Jo, Gyounglyul, Jaehan Jung, and Mincheol Chang. "Controlled Self-Assembly of Conjugated Polymers via a Solvent Vapor Pre-Treatment for Use in Organic Field-Effect Transistors." Polymers 11, no. 2 (2019): 332. http://dx.doi.org/10.3390/polym11020332.

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A facile solution-processing strategy toward well-ordered one-dimensional nanostructures of conjugated polymers via a non-solvent vapor treatment was demonstrated, which resulted in enhancements to the charge transport characteristics of the polymers. The amount of crystalline poly(3-hexylthiophene) (P3HT) nanofibers was precisely controlled by simply varying the exposure time of solutions of P3HT solutions to non-solvent vapor. The effects of non-solvent vapor exposure on the molecular ordering and morphologies of the resultant P3HT films were systematically investigated using ultraviolet-vis

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31

Nazarova, Anastasia A., Alsu I. Gilyazeva, and Ivan I. Stoykov. "The solvent nature influence on the self-assembly of monosubstituted pillar[5]arenes containing N-(aminoalkyl)amide fragment." Butlerov Communications 63, no. 7 (2020): 1–10. http://dx.doi.org/10.37952/roi-jbc-01/20-63-7-1.

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Chemistry of macrocyclic compounds is one of the rapidly developing areas of modern organic chemistry. These macrocycles have become widespread due to the high availability of parents compounds, the possibility of synthesis of ligands based on them for highly selective recognition, ion-selective membranes, electrodes, sensors and nanocontainers for targeted drug delivery. Moreover, in the past few years, attention of researchers has again been riveted on mechanically interlocked molecules (rotaxanes and pseudorotaxans) and supramolecular polymers, which can be explained by their potential appl

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32

Monea, Bogdan Florian, Eusebiu Ilarian Ionete, Stefan Ionut Spiridon, Daniela Ion-Ebrasu, and Emil Petre. "Carbon Nanotubes and Carbon Nanotube Structures Used for Temperature Measurement." Sensors 19, no. 11 (2019): 2464. http://dx.doi.org/10.3390/s19112464.

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Accurate measurement of temperatures with low power consumption with the highest sensitivity and smallest possible elements is still a challenge. The thermal, electrical, and mechanical properties of carbon nanotubes (CNTs) have suggested that their use as a very sensitive sensing element will allow the creation of different sensors, far superior to other devices of similar size. In this paper, we present a short review of different constructive designs of CNTs based resistive sensors used for temperature measurement, available in literature, assembled using different processes, such as self-a

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33

Rodríguez, Rafael, Emilio Quiñoá, Ricardo Riguera, and Félix Freire. "Helical Colorimetric Sensors: Stimuli‐Directed Colorimetric Interconversion of Helical Polymers Accompanied by a Tunable Self‐Assembly Process (Small 13/2019)." Small 15, no. 13 (2019): 1970070. http://dx.doi.org/10.1002/smll.201970070.

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34

Zhang, Huanxia, Wen Wu, Jie Zhou, Xinchao Zhang, Tantan Zhu, and Mingqiong Tong. "Magnetic field-induced self-assembly of chemically modified graphene oxide on cellulose fabrics for the fabrication of flexible conductive devices." Cellulose 28, no. 4 (2021): 2303–14. http://dx.doi.org/10.1007/s10570-020-03653-1.

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AbstractIn this present study, we have successfully fabricated the cellulose fabric with excellent electrical conductivity by depositing the graphene oxide grafted with the modified ferroferric oxide (GOF) upon fabric substrate via layer-by-layer magnetic-field-induced self-assembly apporoach and followed by chemical reduction. The results indicated that the morphologies of graphene oxide nanosheets for three-layer deposited fabrics could form the highly oriented wrinkled structures, which resulted from the synergistic interactions of magnetic induction force on magnetic doublet, hydrogen bond

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Kim, Seokho, Bo-Hyun Kim, Young Ki Hong, et al. "In Situ Enhanced Raman and Photoluminescence of Bio-Hybrid Ag/Polymer Nanoparticles by Localized Surface Plasmon for Highly Sensitive DNA Sensors." Polymers 12, no. 3 (2020): 631. http://dx.doi.org/10.3390/polym12030631.

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We experimentally demonstrate the simultaneous enhancement of Raman and photoluminescence (PL) of core-shell hybrid nanoparticles consisting of Ag (core) and polydiacetylene (PDA, shell) through the assistance of localized surface plasmon (LSP) effect for the effective biosensor. Core-shell nanoparticles (NPs) are fabricated in deionized water through a sequential process of reprecipitation and self-assembly. The Raman signal of PDA on core-shell NPs is enhanced more than 100 times. Also, highly enhanced photoluminescence is observed on Ag/PDA hybrid NPs after coupling of the complementary t-D

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Zhang, Yang, Yan Yang, Chang-Chun Wang, et al. "Cationic water-soluble poly(p-phenylene vinylene) for fluorescence sensors and electrostatic self-assembly nanocomposites with quantum dots." Journal of Applied Polymer Science 110, no. 5 (2008): 3225–33. http://dx.doi.org/10.1002/app.28837.

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37

Suresh, Vignesh, Meiyu Stella Huang, Madapusi P. Srinivasan, and Sivashankar Krishnamoorthy. "High Density Metal Oxide (ZnO) Nanopatterned Platforms for Electronic Applications." MRS Proceedings 1498 (2013): 255–61. http://dx.doi.org/10.1557/opl.2013.344.

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ABSTRACTFabrication methodologies with high precision and tenability for nanostructures of metal and metal oxides are widely explored for engineering devices such as solar cells, sensors, non-volatile memories (NVM) etc. In this direction, metal and metal oxide nanopatterned arrays are the state-of-the-art platforms upon which the device structures are built where the tunable orderly arrangement of the nanostructures enhances the device performance. We describe here a coalition of fabrication protocols that employ block copolymer self-assembly and nanoimprint lithography (NIL) to obtain metal

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Wang, Weizhi, Rui Wang, Chao Zhang, Su Lu, and Tianxi Liu. "Synthesis, characterization and self-assembly behavior in water as fluorescent sensors of cationic water-soluble conjugated polyfluorene-b-poly(N-isopropylacrylamide) diblock copolymers." Polymer 50, no. 5 (2009): 1236–45. http://dx.doi.org/10.1016/j.polymer.2008.12.026.

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39

Matysiak, W., and M. Zaborowska. "Hybrid ZnO/ZnO-NPs nanofibres fabricated via electrospinning." Journal of Achievements in Materials and Manufacturing Engineering 1-2, no. 94 (2019): 5–12. http://dx.doi.org/10.5604/01.3001.0013.5116.

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Purpose: Due to the growing interest and multitude of possible applications, zinc oxide nanowires, including those doped with ZnO nanoparticles, can became, alongside carbon nanotubes, a very desirable material which use is predicted in the construction of nanogenerators, dye sensitized solar cells, optoelectronics or ultrasensitive gas detectors. Design/methodology/approach: The electrospinning process allows for low-cost and scalable production of fibrous mats with diameters from a few to several hundred nanometers. What is more, electrospinning method has gained popularity also due to its v

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Li, Wensi, and Shengyu Feng. "New Functionalized Ionic Liquids Based on POSS for the Detection of Fe3+ Ion." Polymers 13, no. 2 (2021): 196. http://dx.doi.org/10.3390/polym13020196.

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This study reports a novel series of imidazolium ionic liquids (ILs) based on polyhedral oligomeric silsesquioxanes (POSS) towards effective detection of metal ions, especially Fe3+ ion. 1H, 13C, 29Si NMR, high resolution mass spectra (HRMS) and Fourier transform infrared spectra (FTIR) were applied to confirm the structures of the ILs based on POSS (ILs-POSS). The three ILs-POSS were synthesized via a green chemistry approach—a thiol-ene “click” reaction without metal ions as catalysts. Furthermore, the spherical vesicle structures of the ILs-POSS were observed and caused by self-assembly beh

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Qi, Yinghua, Akash Nathani, Jianxin Zhang, Zhengji Song, Chandra Shekhar Sharma, and Sunil K. Varshney. "Synthesis of amphiphilic poly(ethylene glycol)-block-poly(methyl methacrylate) containing trityl ether acid cleavable junction group and its self-assembly into ordered nanoporous thin films." e-Polymers 20, no. 1 (2020): 111–21. http://dx.doi.org/10.1515/epoly-2020-0013.

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AbstractA strategy for the synthesis of well defined poly(ethylene glycol)-block-poly(methyl methacrylate) diblock copolymers containing trityl ether acid cleavable junctions is demonstrated. This approach is achieved by using a combination of poly(ethylene glycol) macroinitiator containing a trityl ether end group, which is susceptible to acid cleavage, and atom transfer radical polymerization technique. The trityl ether linkage between blocks can be readily cleaved in solution or in solid phase under very mild acid condition, which has been confirmed by 1H NMR. These diblock copolymers have

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Gorbachuk, Vladimir V., Anna R. Marysheva, and Ivan I. Stoykov. "Total oxidation of decahydroxypillar[5]arene with copper(II) and iron(III) nitrates." Butlerov Communications 63, no. 7 (2020): 19–23. http://dx.doi.org/10.37952/roi-jbc-01/20-63-7-19.

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Pillar[n]arenes are suitable synthetic platforms for synthesis of functionalized p-cyclophanes, versatile building blocks for creating supramolecular polymers and (pseudo)rotaxanes. The presence of hydroquinone fragments in unsubstituted pillar[n]arene derivatives opens wide opportunities for their application in electrochemical sensors and for their use as reducing agents for synthesis of hybrid materials. Macrocyclic cavity plays the key role in molecular recognition, supramolecular self-assembly of pillararenes, and therefore possibility of switching electron donor properties of aromatic mo

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Henry, Bryan R. "Preface." Pure and Applied Chemistry 81, no. 12 (2009): iv. http://dx.doi.org/10.1351/pac20098112iv.

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IUPAC is a global, scientific organization that contributes to the worldwide understanding of chemistry and the chemical sciences. It is certainly true that young chemists are shaping our science, and it is important for IUPAC to provide encouragement to our young colleagues. IUPAC accomplishes this goal through the IUPAC Prize for Young Chemists. This prestigious annual prize honors four to five chemists for important and outstanding research carried out during recent Ph.D. studies. The work is mainly judged on the basis of a 1000-word essay which is supported by recommendations from the seni

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Ugo, Cataldi, and Buergi Thomas. "Plasmonic coupling induced by growing processes of metal nanoparticles in wrinkled structures and driven by mechanical strain applied to a polidimethisiloxisilane template." Photonics Letters of Poland 9, no. 2 (2017): 45. http://dx.doi.org/10.4302/plp.v9i2.702.

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We report the mechanical control of plasmonic coupling between gold nanoparticles (GNPs) coated onto a large area wrinkled surface of an elastomeric template. Self-assembly and bottom-up procedures, were used to fabricate the sample and to increase the size of GNPs by exploiting the reduction of HAuCl4 with hydroxylamine. The elastic properties of template, the increase of nanostructure size joined with the particular grating configuration of the surface have been exploited to trigger and handle the coupling processes between the nanoparticles. Full Text: PDF ReferencesG. Mie, "Beiträge zur Op

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Aydin, Elif Burcu, Muhammet Aydin, and Mustafa Kemal Sezginturk. "Biosensors in Drug Discovery and Drug Analysis." Current Analytical Chemistry 15, no. 4 (2019): 467–84. http://dx.doi.org/10.2174/1573411014666180912131811.

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Background: The determination of drugs in pharmaceutical formulations and human biologic fluids is important for pharmaceutical and medical sciences. Successful analysis requires low sensitivity, high selectivity and minimum interference effects. Current analytical methods can detect drugs at very low levels but these methods require long sample preparation steps, extraction prior to analysis, highly trained technical staff and high-cost instruments. Biosensors offer several advantages such as short analysis time, high sensitivity, real-time analysis, low-cost instruments, and short pretreatme

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Bishop, A., and P. Gouma. "Self Assembly in Biologically Synthesized Electrospun Electroactive Polymers." MRS Proceedings 889 (2005). http://dx.doi.org/10.1557/proc-0889-w01-06.

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ABSTRACTThe processing parameters of polyaniline (PANI) dictate the desired morphology and overall structural stability of the deposited polymer for biological and chemical sensor applications. Electrospun composites of leucoemeraldine based PANI (LEB-PANI) has exhibited effective separation of aggregates inherent in LEB-PANI powder as a result of charge separation induced on the composite matrix during electrospinning. However it appears the encapsulation of biological (enzyme-Urease E.C.3.5.1.5) in the electrospun matrix intensifies the self assembly process. An investigation of the changes

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Christau, Stephanie, Jan Genzer, and Regine von Klitzing. "Polymer Brush/Metal Nanoparticle Hybrids for Optical Sensor Applications: from Self-Assembly to Tailored Functions and Nanoengineering." Zeitschrift für Physikalische Chemie 229, no. 7-8 (2015). http://dx.doi.org/10.1515/zpch-2014-0573.

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AbstractThis review article summarizes the progress of research in the field of polymer brush/metal nanoparticle hybrid materials. We will discuss the mutual influence of polymer brush matrix and particles. Self-assembly of particles within polymer brushes, and ways to control the loading and location of nanoparticles inside polymer brushes will be described, as well as the possibility to use the brush templates as nanoreactors to generate metal nanoparticles. The combination of stimuli-responsive polymer brushes and nanoparticles exhibiting surface plasmon resonance, such as gold or silver, e

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Ghan, R. C., Y. Lvov, and R. S. Besser. "Characterization of Self-Assembled SnO2 Nanoparticles for Fabrication of a High Sensitivity and High Selectivity Micro-Gas Sensor." MRS Proceedings 707 (2001). http://dx.doi.org/10.1557/proc-707-v7.7.1.

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ABSTRACTIn order to refine further the material technology for tin-oxide based gas sensing we are exploring the use of precision nanoparticle deposition for the sensing layer. Layers of SnO2 nanoparticles were grown on Quartz Crystal Microbalance (QCM) resonators using the layer-by-layer self-assembly technique. Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), and Electron Diffraction Pattern (EDP) analyses were performed on the self-assembled layers of SnO2 nanoparticles. The results showed that SnO2 nanoparticle films are deposited uniformly across the substrate. T

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Wang, Yan, and Wenwen Gao. "A label-free and sensitive fluorescence assay for hyaluronidase activity through electrostatic-controlled quantum dots self-assembly." Journal of Chemical Research, July 7, 2021, 174751982110189. http://dx.doi.org/10.1177/17475198211018973.

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A label-free fluorescence assay for hyaluronidase (HAase) activity based on self-assembly of quantum dots is developed. A cationic polymer (polycation) can induce aggregation of the negatively charged quantum dots through electrostatic interactions and the fluorescence of the quantum dots is quenched. When the polycation is mixed with hyaluronic acid (HA), intense binding of HA to the polycation makes the quantum dots free and recovery of the fluorescence of the quantum dots is observed. However, in the presence of HAase, HA is hydrolyzed into small fragments and the polycation induces reaggre

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Ghan, R. C., Y. Lvov, and R. S. Besser. "Characterization of Self-Assembled SnO 2 Nanoparticles for Fabrication of a High Sensitivity and High Selectivity Micro-Gas Sensor." MRS Proceedings 703 (2001). http://dx.doi.org/10.1557/proc-703-v7.7.

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ABSTRACTIn order to refine further the material technology for tin-oxide based gas sensing we are exploring the use of precision nanoparticle deposition for the sensing layer. Layers of SnO2 nanoparticles were grown on Quartz Crystal Microbalance (QCM) resonators using the layer-by-layer self-assembly technique. Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), and Electron Diffraction Pattern (EDP) analyses were performed on the self-assembled layers of SnO2 nanoparticles. The results showed that SnO2 nanoparticle films are deposited uniformly across the substrate. T

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