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Maximino MD, Martin CS, Pereira MS, Aléssio P. Metallic Phthalocyanines: impact of the film deposition method on its supramolecular arrangement and sensor performance. AN ACAD BRAS CIENC 2019; 91:e20181201. [PMID: 31778456 DOI: 10.1590/0001-3765201920181201] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Accepted: 02/05/2019] [Indexed: 11/21/2022] Open
Abstract
This short review gives a concise overview of the impact of deposition methods on the supramolecular arrangement of metallic phthalocyanine films and their applications. Primarily, an introduction about the possible phthalocyanine molecular structures and derivatives obtained from modification on the phthalocyanine rings was presented. The possibility of perfecting/improving the supramolecular arrangement of metallic phthalocyanine (MPcs) films by using different deposition techniques such as Langmuir-Blodgett (LB), Langmuir-Schaefer (LS), Layer-by-Layer (LbL), physical vapor deposition (PVD) and electrodeposition was discussed in further details. Herein, we highlighted some techniques used on the characterization of supramolecular arrangement (morphology, optical properties, and molecular organization), including the impact on sensing applications. The main scope of this short review is focused on the advances made in this research field in the last five years.
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Affiliation(s)
- Mateus D Maximino
- São Paulo State University (UNESP), School of Technology and Applied Sciences, 305 Roberto Simonsen St, 19060-900 Presidente Prudente, SP, Brazil
| | - Cibely S Martin
- São Paulo State University (UNESP), School of Technology and Applied Sciences, 305 Roberto Simonsen St, 19060-900 Presidente Prudente, SP, Brazil
| | - Matheus S Pereira
- São Paulo State University (UNESP), School of Technology and Applied Sciences, 305 Roberto Simonsen St, 19060-900 Presidente Prudente, SP, Brazil
| | - Priscila Aléssio
- São Paulo State University (UNESP), School of Technology and Applied Sciences, 305 Roberto Simonsen St, 19060-900 Presidente Prudente, SP, Brazil
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2
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Hou Q, Wang X, Ragauskas AJ. Dynamic Self-Assembly of Polyelectrolyte Composite Nanomaterial Film. Polymers (Basel) 2019; 11:E1258. [PMID: 31366006 PMCID: PMC6723539 DOI: 10.3390/polym11081258] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Revised: 07/06/2019] [Accepted: 07/09/2019] [Indexed: 01/01/2023] Open
Abstract
The aim of this study is not only to investigate the feasibility of using PAH (polyallylamine hydrochloride) and PSS (poly styrene-4-sulfonic acid sodium salt) to prepare a film via a layer by layer self-assembly process entrained with silver nanoparticles, but also to show that the silver nanoparticles crystalline structure can be defined and deposited on the surface of the substrate in the desired alignment structure and manner, which is of great help to research on the LBL method in the cellulose field. The effect of outermost layer variation, assembly layers, and composition of multilayers on the formation of the LBL structure on a nanofibrillated cellulose (NFC)/polyvinyl alcohol (PVA) substrate was investigated. The deposition of PAH and PSS was monitored by Fourier-transform infrared spectroscopy (FT-IR). The morphology of the LBL film layers was observed by scanning electron microscope (SEM) and atomic force microscope (AFM). Furthermore, thermal degradation properties were investigated by thermogravimetric analysis (TGA), and physical properties of multilayer films were tested by a universal mechanical tester. The results reveal that PAH and PSS can be readily deposited on a NFC/PVA substrate by using LBL methodology to prepare self-assembled polyelectrolyte multilayer films. The surface morphology of the LBL composite changed from negative to positive charged depending on the final LBL treatment. Also, according to SEM and AFM analysis, silver nanoparticles were well dispersed in the (PAH/PSS) film, which significantly improved the thermal stability of the composite films.
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Affiliation(s)
- Qiupeng Hou
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
| | - Xiwen Wang
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China.
| | - Arthur J Ragauskas
- Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, TN 37996, USA
- Department of Forestry, Wildlife and Fisheries, Center for Renewable Carbon University of Tennessee, Institute of Agriculture, Knoxville, TN 37996, USA
- Joint Institute for Biological Sciences, Biosciences Division, Oak Ridge National Laboratory (ORNL), Knoxville, TN 37831, USA
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Trusso Sfrazzetto G, Millesi S, Pappalardo A, Tomaselli GA, Ballistreri FP, Toscano RM, Fragalà I, Gulino A. Nerve Gas Simulant Sensing by a Uranyl-Salen Monolayer Covalently Anchored on Quartz Substrates. Chemistry 2016; 23:1576-1583. [DOI: 10.1002/chem.201602292] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Indexed: 12/23/2022]
Affiliation(s)
| | - Salvatrice Millesi
- Dipartimento di Scienze Chimiche; Università di Catania; viale A. Doria 6 95125 Catania Italy
- INSTM Udr of Catania; viale A. Doria 6 95125 Catania Italy
| | - Andrea Pappalardo
- Dipartimento di Scienze Chimiche; Università di Catania; viale A. Doria 6 95125 Catania Italy
- INSTM Udr of Catania; viale A. Doria 6 95125 Catania Italy
| | - Gaetano A. Tomaselli
- Dipartimento di Scienze Chimiche; Università di Catania; viale A. Doria 6 95125 Catania Italy
| | | | - Rosa Maria Toscano
- Dipartimento di Scienze Chimiche; Università di Catania; viale A. Doria 6 95125 Catania Italy
| | - Ignazio Fragalà
- Dipartimento di Scienze Chimiche; Università di Catania; viale A. Doria 6 95125 Catania Italy
- INSTM Udr of Catania; viale A. Doria 6 95125 Catania Italy
| | - Antonino Gulino
- Dipartimento di Scienze Chimiche; Università di Catania; viale A. Doria 6 95125 Catania Italy
- INSTM Udr of Catania; viale A. Doria 6 95125 Catania Italy
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4
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The size effect of silver nanocubes on gap-mode surface enhanced Raman scattering substrate. J Taiwan Inst Chem Eng 2016. [DOI: 10.1016/j.jtice.2016.10.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Garcia-Hernandez C, Medina-Plaza C, Garcia-Cabezon C, Martin-Pedrosa F, del Valle I, Antonio de Saja J, Rodríguez-Méndez ML. An Electrochemical Quartz Crystal Microbalance Multisensor System Based on Phthalocyanine Nanostructured Films: Discrimination of Musts. SENSORS (BASEL, SWITZERLAND) 2015; 15:29233-49. [PMID: 26610494 PMCID: PMC4701330 DOI: 10.3390/s151129233] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/10/2015] [Revised: 10/09/2015] [Accepted: 11/13/2015] [Indexed: 12/30/2022]
Abstract
An array of electrochemical quartz crystal electrodes (EQCM) modified with nanostructured films based on phthalocyanines was developed and used to discriminate musts prepared from different varieties of grapes. Nanostructured films of iron, nickel and copper phthalocyanines were deposited on Pt/quartz crystals through the Layer by Layer technique by alternating layers of the corresponding phthalocyanine and poly-allylamine hydrochloride. Simultaneous electrochemical and mass measurements were used to study the mass changes accompanying the oxidation of electroactive species present in must samples obtained from six Spanish varieties of grapes (Juan García, Prieto Picudo, Mencía Regadío, Cabernet Sauvignon, Garnacha and Tempranillo). The mass and voltammetric outputs were processed using three-way models. Parallel Factor Analysis (PARAFAC) was successfully used to discriminate the must samples according to their variety. Multi-way partial least squares (N-PLS) evidenced the correlations existing between the voltammetric data and the polyphenolic content measured by chemical methods. Similarly, N-PLS showed a correlation between mass outputs and parameters related to the sugar content. These results demonstrated that electronic tongues based on arrays of EQCM sensors can offer advantages over arrays of mass or voltammetric sensors used separately.
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Affiliation(s)
- Celia Garcia-Hernandez
- Department of Inorganic Chemistry, Engineers School, University of Valladolid, Valladolid 47011, Spain.
| | - Cristina Medina-Plaza
- Department of Inorganic Chemistry, Engineers School, University of Valladolid, Valladolid 47011, Spain.
| | - Cristina Garcia-Cabezon
- Department of Materials Science, Engineers School, University of Valladolid, Valladolid 47011, Spain.
| | - Fernando Martin-Pedrosa
- Department of Materials Science, Engineers School, University of Valladolid, Valladolid 47011, Spain.
| | - Isabel del Valle
- Department of Electronic Technology, Engineers School, University of Valladolid, Valladolid 47011, Spain.
| | - Jose Antonio de Saja
- Department of Condensed Matter Physics, Faculty of Sciences, University of Valladolid, Valladolid 47011, Spain.
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Priolo MA, Holder KM, Guin T, Grunlan JC. Recent Advances in Gas Barrier Thin Films via Layer-by-Layer Assembly of Polymers and Platelets. Macromol Rapid Commun 2015; 36:866-79. [DOI: 10.1002/marc.201500055] [Citation(s) in RCA: 93] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2015] [Indexed: 12/24/2022]
Affiliation(s)
- Morgan A. Priolo
- 3M Corporate Research Materials Laboratory; 3M Center, Building 201-4N-01, St. Paul Minnesota 55144 USA
| | - Kevin M. Holder
- Department of Mechanical Engineering; Texas A&M University; College Station Texas 77843 USA
| | - Tyler Guin
- Department of Chemical Engineering; Texas A&M University; College Station Texas 77843 USA
| | - Jaime C. Grunlan
- Department of Mechanical Engineering; Texas A&M University; College Station Texas 77843 USA
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Aoki PH, Alessio P, Volpati D, Paulovich FV, Riul A, Oliveira ON, Constantino CJ. On the distinct molecular architectures of dipping- and spray-LbL films containing lipid vesicles. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 41:363-71. [DOI: 10.1016/j.msec.2014.04.067] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2014] [Revised: 04/02/2014] [Accepted: 04/26/2014] [Indexed: 11/30/2022]
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9
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Ohtake T, Tanaka H, Matsumoto T, Kimura M, Ohta A. Redox-Driven Molecular Switches Consisting of Bis(benzodithiolyl)bithienyl Scaffold and Mesogenic Moieties: Synthesis and Complexes with Liquid Crystalline Polymer. J Org Chem 2014; 79:6590-602. [DOI: 10.1021/jo501072u] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Toshihiro Ohtake
- Seiko Epson Corporation, 281
Fujimi, Fujimi-machi, Suwa-gun, Nagano 399-0293, Japan
| | - Hideki Tanaka
- Seiko Epson Corporation, 281
Fujimi, Fujimi-machi, Suwa-gun, Nagano 399-0293, Japan
| | - Tetsuro Matsumoto
- Seiko Epson Corporation, 281
Fujimi, Fujimi-machi, Suwa-gun, Nagano 399-0293, Japan
| | - Mutsumi Kimura
- Division
of Chemistry and Materials, Faculty of Textile Science and Technology, Shinshu University, Ueda, Nagano 386-8567, Japan
| | - Akira Ohta
- Department
of Chemistry, Faculty of Science, Shinshu University, Matsumoto, Nagano 390-8621, Japan
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Volpati D, Aoki PHB, Alessio P, Pavinatto FJ, Miranda PB, Constantino CJL, Oliveira ON. Vibrational spectroscopy for probing molecular-level interactions in organic films mimicking biointerfaces. Adv Colloid Interface Sci 2014; 207:199-215. [PMID: 24530000 DOI: 10.1016/j.cis.2014.01.014] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2013] [Revised: 11/28/2013] [Accepted: 01/13/2014] [Indexed: 01/26/2023]
Abstract
Investigation into nanostructured organic films has served many purposes, including the design of functionalized surfaces that may be applied in biomedical devices and tissue engineering and for studying physiological processes depending on the interaction with cell membranes. Of particular relevance are Langmuir monolayers, Langmuir-Blodgett (LB) and layer-by-layer (LbL) films used to simulate biological interfaces. In this review, we shall focus on the use of vibrational spectroscopy methods to probe molecular-level interactions at biomimetic interfaces, with special emphasis on three surface-specific techniques, namely sum frequency generation (SFG), polarization-modulated infrared reflection absorption spectroscopy (PM-IRRAS) and surface-enhanced Raman scattering (SERS). The two types of systems selected for exemplifying the potential of the methods are the cell membrane models and the functionalized surfaces with biomolecules. Examples will be given on how SFG and PM-IRRAS can be combined to determine the effects from biomolecules on cell membrane models, which include determination of the orientation and preservation of secondary structure. Crucial information for the action of biomolecules on model membranes has also been obtained with PM-IRRAS, as is the case of chitosan removing proteins from the membrane. SERS will be shown as promising for enabling detection limits down to the single-molecule level. The strengths and limitations of these methods will also be discussed, in addition to the prospects for the near future.
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Affiliation(s)
- Diogo Volpati
- São Carlos Institute of Physics, University of São Paulo, CP 369, São Carlos, SP 13560-970, Brazil
| | - Pedro H B Aoki
- Faculty of Science and Technology, UNESP, Presidente Prudente, CEP 19060-900 SP,Brazil
| | - Priscila Alessio
- Faculty of Science and Technology, UNESP, Presidente Prudente, CEP 19060-900 SP,Brazil
| | - Felippe J Pavinatto
- São Carlos Institute of Physics, University of São Paulo, CP 369, São Carlos, SP 13560-970, Brazil
| | - Paulo B Miranda
- São Carlos Institute of Physics, University of São Paulo, CP 369, São Carlos, SP 13560-970, Brazil
| | | | - Osvaldo N Oliveira
- São Carlos Institute of Physics, University of São Paulo, CP 369, São Carlos, SP 13560-970, Brazil.
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11
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Gulino A, Lupo F, Cristaldi DA, Pappalardo S, Capici C, Gattuso G, Notti A, Parisi MF. A Viable Route for Lithium Ion Detection. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201301213] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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12
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Duarte AA, Gomes PJ, Ribeiro JHF, Ribeiro PA, Hoffmann SV, Mason NJ, Oliveira ON, Raposo M. Characterization of PAH/DPPG layer-by-layer films by VUV spectroscopy. THE EUROPEAN PHYSICAL JOURNAL. E, SOFT MATTER 2013; 36:98. [PMID: 24008406 DOI: 10.1140/epje/i2013-13098-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2013] [Revised: 07/03/2013] [Accepted: 07/03/2013] [Indexed: 06/02/2023]
Abstract
The spectroscopic characterization of layer-by-layer (LbL) films containing liposomes is essential not only for determining the precise film architecture but also to guide the design of drug delivery systems. In this study we provide the first report of vacuum ultraviolet spectroscopy (VUV) characterization of LbL films made with liposomes from 1.2-dipalmitoyl-sn-Glycero-3-[Phospho-rac-(1-glycerol)] (Sodium Salt) (DPPG) alternated with poly(allylamine hydrochloride) (PAH). Measurements in the 6.0-9.5eV range allowed us to identify the electronic transitions responsible for the spectra, which were assigned to carboxyl, hydroxyl and phosphate groups in DPPG while the PAH spectra were governed by electronic transitions in the amino groups. The surface mass density of the LbL films could be determined, from which the formation of a DPPG bilayer was inferred. This rupture of the liposomes into bilayers was confirmed with atomic force microscopy measurements. In subsidiary experiments we ensured that the UV irradiation in vacuum had negligible damage in the DPPG liposomes during the course of the VUV measurements. In addition to demonstrating the usefulness of VUV spectroscopy, the results presented here may be exploited in biological applications of liposome-containing films.
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Affiliation(s)
- Andreia A Duarte
- CEFITEC, Departamento de Fısica, Faculdade de Ciências e Tecnologia, FCT, Universidade Nova de Lisboa, 2829-516, Caparica, Portugal
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13
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Tuning the nanostructure of DODAB/nickel tetrasulfonated phthalocyanine bilayers in LbL films. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2013; 33:2937-46. [DOI: 10.1016/j.msec.2013.03.019] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2012] [Revised: 02/11/2013] [Accepted: 03/12/2013] [Indexed: 01/27/2023]
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Aoki PHB, Alessio P, Furini LN, Constantino CJL, Neves TTAT, Paulovich FV, de Oliveira MCF, Oliveira ON. Molecularly designed layer-by-layer (LbL) films to detect catechol using information visualization methods. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:7542-7550. [PMID: 23356548 DOI: 10.1021/la304544d] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The control of molecular architectures has been exploited in layer-by-layer (LbL) films deposited on Au interdigitated electrodes, thus forming an electronic tongue (e-tongue) system that reached an unprecedented high sensitivity (down to 10(-12) M) in detecting catechol. Such high sensitivity was made possible upon using units containing the enzyme tyrosinase, which interacted specifically with catechol, and by processing impedance spectroscopy data with information visualization methods. These latter methods, including the parallel coordinates technique, were also useful for identifying the major contributors to the high distinguishing ability toward catechol. Among several film architectures tested, the most efficient had a tyrosinase layer deposited atop LbL films of alternating layers of dioctadecyldimethylammonium bromide (DODAB) and 1,2-dipalmitoyl-sn-3-glycero-fosfo-rac-(1-glycerol) (DPPG), viz., (DODAB/DPPG)5/DODAB/Tyr. The latter represents a more suitable medium for immobilizing tyrosinase when compared to conventional polyelectrolytes. Furthermore, the distinction was more effective at low frequencies where double-layer effects on the film/liquid sample dominate the electrical response. Because the optimization of film architectures based on information visualization is completely generic, the approach presented here may be extended to designing architectures for other types of applications in addition to sensing and biosensing.
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Affiliation(s)
- Pedro H B Aoki
- Faculdade de Ciências e Tecnologia, UNESP, Presidente Prudente, SP, Brazil
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Aoki PHB, Carreon EGE, Volpati D, Shimabukuro MH, Constantino CJL, Aroca RF, Oliveira ON, Paulovich FV. SERS mapping in Langmuir-Blodgett films and single-molecule detection. APPLIED SPECTROSCOPY 2013; 67:563-569. [PMID: 23643046 DOI: 10.1366/12-06909] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Plasmon-enhanced spectroscopic techniques have expanded single-molecule detection (SMD) and are revolutionizing areas such as bio-imaging and single-cell manipulation. Surface-enhanced (resonance) Raman scattering (SERS or SERRS) combines high sensitivity with molecular-fingerprint information at the single-molecule level. Spectra originating from single-molecule SERS experiments are rare events, which occur only if a single molecule is located in a hot-spot zone. In this spot, the molecule is selectively exposed to a significant enhancement associated with a high, local electromagnetic field in the plasmonic substrate. Here, we report an SMD study with an electrostatic approach in which a Langmuir film of a phospholipid with anionic polar head groups (PO4(-)) was doped with cationic methylene blue (MB), creating a homogeneous, two-dimensional distribution of dyes in the monolayer. The number of dyes in the probed area of the Langmuir-Blodgett (LB) film coating the Ag nanostructures established a regime in which single-molecule events were observed, with the identification based on direct matching of the observed spectrum at each point of the mapping with a reference spectrum for the MB molecule. In addition, advanced fitting techniques were tested with the data obtained from micro-Raman mapping, thus achieving real-time processing to extract the MB single-molecule spectra.
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Affiliation(s)
- Pedro H B Aoki
- Faculdade de Ciências e Tecnologia, UNESP Universidade Estadual Paulista, Presidente Prudente/SP, 19060-900, Brazil
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Spray layer-by-layer films based on phospholipid vesicles aiming sensing application via e-tongue system. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2012. [DOI: 10.1016/j.msec.2012.02.004] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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17
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González H C, Volkmann UG, Retamal MJ, Cisternas M, Sarabia MA, López KA. Thermal behavior of 1,2-dipalmitoyl-sn-3-phosphoglycerocholine bi- and multi-layers, deposited with physical vapor deposition under ellipsometric growth control. J Chem Phys 2012; 136:134709. [PMID: 22482582 DOI: 10.1063/1.3698486] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
1,2-dipalmitoyl-sn-3-phosphoglycerocholine membranes were deposited onto a silicon substrate (Si/SiO(2)) using physical vapor deposition with in situ ellipsometric thickness control. Along several heating cycles it was possible to identify well-defined boundaries for gel, ripple, liquid crystalline, and fluid-disordered phases. Particularly, the second order transition between gel and ripple phase was clearly identified in the range of ~28-34 °C using Raman spectroscopy. Atomic force microscopy and imaging ellipsometry (IE) were used to observe and characterize the ripple phase undulations of period λ = 20.8 nm and average height h = 19.95 nm along the temperature interval of ~34 to 40 °C. Clusters/agglomerations heights of more than twice the membrane thickness were observed with IE, induced by heating cycles.
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Affiliation(s)
- Carmen González H
- Facultad de Física, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860-Santiago, 7820436 Chile.
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Volpati D, Aoki PHB, Dantas CAR, Paulovich FV, de Oliveira MCF, Oliveira ON, Riul A, Aroca RF, Constantino CJL. Toward the optimization of an e-tongue system using information visualization: a case study with perylene tetracarboxylic derivative films in the sensing units. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:1029-1040. [PMID: 22103862 DOI: 10.1021/la203641a] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The wide variety of molecular architectures used in sensors and biosensors and the large amount of data generated with some principles of detection have motivated the use of computational methods, such as information visualization techniques, not only to handle the data but also to optimize sensing performance. In this study, we combine projection techniques with micro-Raman scattering and atomic force microscopy (AFM) to address critical issues related to practical applications of electronic tongues (e-tongues) based on impedance spectroscopy. Experimentally, we used sensing units made with thin films of a perylene derivative (AzoPTCD acronym), coating Pt interdigitated electrodes, to detect CuCl(2) (Cu(2+)), methylene blue (MB), and saccharose in aqueous solutions, which were selected due to their distinct molecular sizes and ionic character in solution. The AzoPTCD films were deposited from monolayers to 120 nm via Langmuir-Blodgett (LB) and physical vapor deposition (PVD) techniques. Because the main aspects investigated were how the interdigitated electrodes are coated by thin films (architecture on e-tongue) and the film thickness, we decided to employ the same material for all sensing units. The capacitance data were projected into a 2D plot using the force scheme method, from which we could infer that at low analyte concentrations the electrical response of the units was determined by the film thickness. Concentrations at 10 μM or higher could be distinguished with thinner films--tens of nanometers at most--which could withstand the impedance measurements, and without causing significant changes in the Raman signal for the AzoPTCD film-forming molecules. The sensitivity to the analytes appears to be related to adsorption on the film surface, as inferred from Raman spectroscopy data using MB as analyte and from the multidimensional projections. The analysis of the results presented may serve as a new route to select materials and molecular architectures for novel sensors and biosensors, in addition to suggesting ways to unravel the mechanisms behind the high sensitivity obtained in various sensors.
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Affiliation(s)
- Diogo Volpati
- Faculdade de Ciências e Tecnologia, UNESP Univ Estadual Paulista, Presidente Prudente/SP, 19060-900, Brazil
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Cristaldi DA, Fragalà I, Pappalardo A, Toscano RM, Ballistreri FP, Tomaselli GA, Gulino A. Sensing of linear alkylammonium ions by a 5-pyrenoylamido-calix[5]arene solution and monolayer using luminescence measurements. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c1jm13475b] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Matharu Z, Bandodkar AJ, Gupta V, Malhotra BD. Fundamentals and application of ordered molecular assemblies to affinity biosensing. Chem Soc Rev 2012; 41:1363-402. [DOI: 10.1039/c1cs15145b] [Citation(s) in RCA: 83] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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A layer-by-layer self-assembled Fe2O3 nanorod-based composite multilayer film on ITO anode in microbial fuel cell. Colloids Surf A Physicochem Eng Asp 2011. [DOI: 10.1016/j.colsurfa.2011.08.056] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Kim YS, Davis R, Cain AA, Grunlan JC. Development of layer-by-layer assembled carbon nanofiber-filled coatings to reduce polyurethane foam flammability. POLYMER 2011. [DOI: 10.1016/j.polymer.2011.04.023] [Citation(s) in RCA: 91] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Electrocatalytic oxidation of GMP on an ITO electrode modified by the photodeposition of Pd nanoparticles onto a monolayer TiO2 nanosheets/[Ru(phen)2(dC18bpy)]2+ hybrid film. Sci China Chem 2011. [DOI: 10.1007/s11426-010-4190-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Alessio P, Aoki PHB, De Saja Saez JA, Rodríguez-Méndez ML, Constantino CJL. Combining SERRS and electrochemistry to characterize sensors based on biomembrane mimetic models formed by phospholipids. RSC Adv 2011. [DOI: 10.1039/c1ra00141h] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Li YC, Mannen S, Schulz J, Grunlan JC. Growth and fire protection behavior of POSS-based multilayer thin films. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c0jm03752d] [Citation(s) in RCA: 94] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Abstract
This minireview describes the main developments of electronic tongues (e-tongues) and taste sensors in recent years, with a summary of the principles of detection and materials used in the sensing units. E-tongues are sensor arrays capable of distinguishing very similar liquids employing the concept of global selectivity, where the difference in the electrical response of different materials serves as a fingerprint for the analysed sample. They have been widely used for the analysis of wines, fruit juices, coffee, milk and beverages, in addition to the detection of trace amounts of impurities or pollutants in waters. Among the various principles of detection, electrochemical measurements and impedance spectroscopy are the most prominent. With regard to the materials for the sensing units, in most cases use is made of ultrathin films produced in a layer-by-layer fashion to yield higher sensitivity with the advantage of control of the film molecular architecture. The concept of e-tongues has been extended to biosensing by using sensing units capable of molecular recognition, as in films with immobilized antigens or enzymes with specific recognition for clinical diagnosis. Because the identification of samples is basically a classification task, there has been a trend to use artificial intelligence and information visualization methods to enhance the performance of e-tongues.
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Affiliation(s)
- Antonio Riul
- UFScar, campus Sorocaba, 18052-780 Sorocaba, SP, Brazil
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Li YC, Schulz J, Mannen S, Delhom C, Condon B, Chang S, Zammarano M, Grunlan JC. Flame retardant behavior of polyelectrolyte-clay thin film assemblies on cotton fabric. ACS NANO 2010; 4:3325-3337. [PMID: 20496883 DOI: 10.1021/nn100467e] [Citation(s) in RCA: 152] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Cotton fabric was treated with flame-retardant coatings composed of branched polyethylenimine (BPEI) and sodium montmorillonite (MMT) clay, prepared via layer-by-layer (LbL) assembly. Four coating recipes were created by exposing fabric to aqueous solutions of BPEI (pH 7 or 10) and MMT (0.2 or 1 wt %). BPEI pH 10 produces the thickest films, while 1 wt % MMT gives the highest clay loading. Each coating recipe was evaluated at 5 and 20 bilayers. Thermogravimetric analysis showed that coated fabrics left as much as 13% char after heating to 500 degrees C, nearly 2 orders of magnitude more than uncoated fabric, with less than 4 wt % coming from the coating itself. These coatings also reduced afterglow time in vertical flame tests. Postburn residues of coated fabrics were examined with SEM and revealed that the weave structure and fiber shape in all coated fabrics were preserved. The BPEI pH 7/1 wt % MMT recipe was most effective. Microcombustion calorimeter testing showed that all coated fabrics reduced the total heat release and heat release capacity of the fabric. Fiber count and strength of uncoated and coated fabric are similar. These results demonstrate that LbL assembly is a relatively simple method for imparting flame-retardant behavior to cotton fabric. This work lays the foundation for using these types of thin film assemblies to make a variety of complex substrates (foam, fabrics, etc.) flame resistant.
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Affiliation(s)
- Yu-Chin Li
- Department of Mechanical Engineering, Materials Science and Engineering Program, Texas A&M University, College Station, Texas 77843, USA
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Malone SM, Trabelsi S, Zhang S, Lee TR, Schwartz DK. Self-Assembly of Linactants: Micelles and Lyotropic Liquid Crystals in Two Dimensions. J Phys Chem B 2010; 114:8616-20. [DOI: 10.1021/jp104375s] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Stephanie M. Malone
- Department of Chemical and Biological Engineering, University of Colorado, Boulder, Colorado 80309-0424, and Department of Chemistry, University of Houston, Houston, Texas 77204-5003
| | - Siwar Trabelsi
- Department of Chemical and Biological Engineering, University of Colorado, Boulder, Colorado 80309-0424, and Department of Chemistry, University of Houston, Houston, Texas 77204-5003
| | - Shishan Zhang
- Department of Chemical and Biological Engineering, University of Colorado, Boulder, Colorado 80309-0424, and Department of Chemistry, University of Houston, Houston, Texas 77204-5003
| | - T. Randall Lee
- Department of Chemical and Biological Engineering, University of Colorado, Boulder, Colorado 80309-0424, and Department of Chemistry, University of Houston, Houston, Texas 77204-5003
| | - Daniel K. Schwartz
- Department of Chemical and Biological Engineering, University of Colorado, Boulder, Colorado 80309-0424, and Department of Chemistry, University of Houston, Houston, Texas 77204-5003
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Aoki PHB, Alessio P, Riul A, De Saja Saez JA, Constantino CJL. Coupling Surface-Enhanced Resonance Raman Scattering and Electronic Tongue as Characterization Tools to Investigate Biological Membrane Mimetic Systems. Anal Chem 2010; 82:3537-46. [DOI: 10.1021/ac902585a] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Pedro H. B. Aoki
- Faculdade de Ciências e Tecnologia, Unesp Univ Estadual Paulista, Presidente Prudente/SP, 19060-900, Brazil, Faculty of Science, University of Valladolid, Valladolid 47011, Spain, and Universidade Federal de São Carlos, campus Sorocaba/SP, 18043-970, Brazil
| | - Priscila Alessio
- Faculdade de Ciências e Tecnologia, Unesp Univ Estadual Paulista, Presidente Prudente/SP, 19060-900, Brazil, Faculty of Science, University of Valladolid, Valladolid 47011, Spain, and Universidade Federal de São Carlos, campus Sorocaba/SP, 18043-970, Brazil
| | - Antonio Riul
- Faculdade de Ciências e Tecnologia, Unesp Univ Estadual Paulista, Presidente Prudente/SP, 19060-900, Brazil, Faculty of Science, University of Valladolid, Valladolid 47011, Spain, and Universidade Federal de São Carlos, campus Sorocaba/SP, 18043-970, Brazil
| | - J. A. De Saja Saez
- Faculdade de Ciências e Tecnologia, Unesp Univ Estadual Paulista, Presidente Prudente/SP, 19060-900, Brazil, Faculty of Science, University of Valladolid, Valladolid 47011, Spain, and Universidade Federal de São Carlos, campus Sorocaba/SP, 18043-970, Brazil
| | - Carlos J. L. Constantino
- Faculdade de Ciências e Tecnologia, Unesp Univ Estadual Paulista, Presidente Prudente/SP, 19060-900, Brazil, Faculty of Science, University of Valladolid, Valladolid 47011, Spain, and Universidade Federal de São Carlos, campus Sorocaba/SP, 18043-970, Brazil
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Alessio P, Rodríguez-Méndez ML, De Saja Saez JA, Constantino CJL. Iron phthalocyanine in non-aqueous medium forming layer-by-layer films: growth mechanism, molecular architecture and applications. Phys Chem Chem Phys 2010; 12:3972-83. [DOI: 10.1039/b922242c] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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Lupo F, Gentile S, Ballistreri FP, Tomaselli GA, Fragalà ME, Gulino A. Viable route for switching of an engineered silica surface using Cu2+ ions at sub-ppm levels. Analyst 2010; 135:2273-9. [DOI: 10.1039/c0an00364f] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Oliveri P, Casolino MC, Forina M. Chemometric brains for artificial tongues. ADVANCES IN FOOD AND NUTRITION RESEARCH 2010; 61:57-117. [PMID: 21092902 DOI: 10.1016/b978-0-12-374468-5.00002-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The last years showed a significant trend toward the exploitation of rapid and economic analytical devices able to provide multiple information about samples. Among these, the so-called artificial tongues represent effective tools which allow a global sample characterization comparable to a fingerprint. Born as taste sensors for food evaluation, such devices proved to be useful for a wider number of purposes. In this review, a critical overview of artificial tongue applications over the last decade is outlined. In particular, the focus is centered on the chemometric techniques, which allow the extraction of valuable information from nonspecific data. The basic steps of signal processing and pattern recognition are discussed and the principal chemometric techniques are described in detail, highlighting benefits and drawbacks of each one. Furthermore, some novel methods recently introduced and particularly suitable for artificial tongue data are presented.
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Affiliation(s)
- Paolo Oliveri
- Department of Drug and Food Chemistry and Technology, University of Genoa, Genoa, Italy.
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Aoki PHB, Alessio P, Rodríguez-Méndez ML, De Saja Saez JA, Constantino CJL. Taking advantage of electrostatic interactions to grow Langmuir-Blodgett films containing multilayers of the phospholipid dipalmitoylphosphatidylglycerol. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:13062-13070. [PMID: 19601609 DOI: 10.1021/la901923v] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The use of phospholipids as mimetic systems for studies involving the cell membrane is a well-known approach. In this context, the Langmuir and Langmuir-Blodgett (LB) methods are among the main techniques used to produce ordered layers of phospholipids structured as mono- or bilayers on water subphase and solid substrates. However, the difficulties of producing multilayer LB films of phospholipids restrict the application of this technique depending on the sensitivity of the experimental analysis to be conducted. Here, an alternative approach is used to produce LB films containing multilayers of the negative phospholipid dipalmitoylphosphatidylglycerol (DPPG). Inspired by the electrostatic layer-by-layer (LbL) technique, DPPG multilayer LB films were produced by transferring the DPPG Langmuir monolayers from the water subphase containing low concentrations of the cationic polyelectrolyte poly(allylamine hydrochloride) (PAH) onto solid substrates. Fourier transform infrared (FTIR) absorption spectroscopy revealed that the interactions between the NH(3)(+) (PAH) and PO(4)(-) (DPPG) groups might be the main driving forces that allow growth of these LB films. Besides, ultraviolet-visible (UV-vis) absorption spectroscopy showed that the multilayer LB films can be grown in a controlled way in terms of thickness at nanometer scale. Cyclic voltammetry showed that DPPG and PAH are more packed in the LB than LbL films. The latter finding is related to the distinct molecular architecture of the films since DPPG is structured as monolayers in the LB films and multilamellar vesicles in the LbL films. Despite the interaction with PAH, cyclic voltammetry also showed that DPPG retains its biological activity in LB films, which is a key factor since this makes DPPG a suitable material in sensing applications. Therefore, multilayer LB films were deposited onto Pt interdigitated electrodes forming sensing units, which were applied in the detection of a phenothiazine compound [methylene blue (MB)] using impedance spectroscopy. The performance of DPPG in single-layer and multilayer LB films was compared to the performance of sensing unities composed of DPPG in single-layer and multilayer LbL films, showing the importance of both the thickness and the molecular architecture of the thin films. As found in a previous work for LbL films, the high sensitivity reached by these sensing units is intimately related to changes in the morphology of the film as evidenced by the micro-Raman technique. Finally, the interaction between MB and the (DPPG+PAH) LB films was complemented by pi-A isotherms and surface-enhanced resonance Raman scattering (SERRS).
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Affiliation(s)
- Pedro H B Aoki
- Departamento de Física, Química e Biologia, Faculdade de Ciências e Tecnologia, UNESP, 19060-900 Presidente Prudente, SP, Brazil
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Li YC, Schulz J, Grunlan JC. Polyelectrolyte/nanosilicate thin-film assemblies: influence of pH on growth, mechanical behavior, and flammability. ACS APPLIED MATERIALS & INTERFACES 2009; 1:2338-2347. [PMID: 20355871 DOI: 10.1021/am900484q] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Thin composite films of branched polyethylenimine (BPEI) and Laponite clay platelets were prepared using layer-by-layer assembly. The film thickness was tailored by altering the pH of the aqueous mixtures used to deposit these films, resulting in growth that ranged from 0.5 to 5 nm/bilayer (BL). High-pH BPEI and low-pH clay produced the thickest films. The microstructure of tilted Laponite clay platelet stacks is observed with transmission electron microscopy when using unadjusted BPEI (pH 10.3) and pH 6 Laponite. This recipe resulted in a film with 83 wt % clay and a hardness of 0.5 GPa. In all films, the clay platelets are uniformly deposited and look analogous to a cobblestone path in atomic force microscopy surface images. Several 40-BL films, with thicknesses of 100 nm or more, exhibit reduced moduli ranging from 7 to 10 GPa and hardness of around 0.5 GPa, suggesting that these transparent films could be useful as hard coatings for plastic films. These thin coatings were also deposited onto cotton fabric. Each individual cotton fiber was uniformly coated, and the fabric has significantly more char left after burning than the uncoated fabric. Thermogravimetric analysis results reveal that fabric coated with 10 BLs of BPEI/Laponite produces up to 6 wt % char at 500 degrees C, which is almost 1 order of magnitude greater than that of untreated fabric. This initial study demonstrates that polymer/clay assemblies could improve the thermal stability of cotton and may be useful for fire safety applications.
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Affiliation(s)
- Yu-Chin Li
- Department of Mechanical Engineering, Texas A&M University, College Station, Texas 77843, USA
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