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Garreau C, Chiappisi L, Micciulla S, Morfin I, Trombotto S, Delair T, Sudre G. Preparation of highly stable and ultrasmooth chemically grafted thin films of chitosan. SOFT MATTER 2023; 19:1606-1616. [PMID: 36752562 DOI: 10.1039/d3sm00003f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Chitosan-coated surfaces are of great interest for biomedical applications (antibacterial coatings, implants, would healing, single-cell microfluidics…). However, one major limitation of chitosan-based systems is the high solubility of the polymer under acidic aqueous conditions. Herein, we describe a simple procedure to prepare extremely smooth and stable chitosan coatings. In detail, chitosan films with a low degree of N-acetylation and of thicknesses varying from 40 nm to 10 μm were grafted onto epoxy-functionalized silicon wafers via an optimized water-temperature treatment (WTT). The formation of a grafted chitosan network insoluble in acidic aqueous media (pH 3.5) was evidenced and the films were stable for at least 2 days at pH 3.5. The film morphology and the swelling behavior were characterized by atomic force microscopy (AFM) and neutron reflectivity, which showed that the film roughness was extremely low. The physical cross-linking of the films was demonstrated using infrared spectroscopy, dynamic mechanical analysis (DMA) and wide-angle X-ray scattering (WAXS). Finally, we show that the swelling behavior of such films was largely influenced by the environmental conditions, such as the pH or ionic strength of the solution.
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Affiliation(s)
- Cyrielle Garreau
- Univ Lyon, CNRS, UMR 5223, Ingénierie des Matériaux Polymères, Université Claude Bernard Lyon1, INSA Lyon, Université Jean Monnet, F-69622, Villeurbanne cédex, France.
| | - Leonardo Chiappisi
- Institut Laue-Langevin, 71 Avenue des Martyrs, Grenoble F-38000, Cedex 9, France
| | - Samantha Micciulla
- Institut Laue-Langevin, 71 Avenue des Martyrs, Grenoble F-38000, Cedex 9, France
| | - Isabelle Morfin
- LIPhy, Université Grenoble Alpes CNRS, UMR 5588, 140 Avenue de la Physique, Saint Martin d'Hères F-38402, France
| | - Stéphane Trombotto
- Univ Lyon, CNRS, UMR 5223, Ingénierie des Matériaux Polymères, Université Claude Bernard Lyon1, INSA Lyon, Université Jean Monnet, F-69622, Villeurbanne cédex, France.
| | - Thierry Delair
- Univ Lyon, CNRS, UMR 5223, Ingénierie des Matériaux Polymères, Université Claude Bernard Lyon1, INSA Lyon, Université Jean Monnet, F-69622, Villeurbanne cédex, France.
| | - Guillaume Sudre
- Univ Lyon, CNRS, UMR 5223, Ingénierie des Matériaux Polymères, Université Claude Bernard Lyon1, INSA Lyon, Université Jean Monnet, F-69622, Villeurbanne cédex, France.
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Infrared Spectroscopy–Quo Vadis? APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12157598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Given the exquisite capability of direct, non-destructive label-free sensing of molecular transitions, IR spectroscopy has become a ubiquitous and versatile analytical tool. IR application scenarios range from industrial manufacturing processes, surveillance tasks and environmental monitoring to elaborate evaluation of (bio)medical samples. Given recent developments in associated fields, IR spectroscopic devices increasingly evolve into reliable and robust tools for quality control purposes, for rapid analysis within at-line, in-line or on-line processes, and even for bed-side monitoring of patient health indicators. With the opportunity to guide light at or within dedicated optical structures, remote sensing as well as high-throughput sensing scenarios are being addressed by appropriate IR methodologies. In the present focused article, selected perspectives on future directions for IR spectroscopic tools and their applications are discussed. These visions are accompanied by a short introduction to the historic development, current trends, and emerging technological opportunities guiding the future path IR spectroscopy may take. Highlighted state-of-the art implementations along with novel concepts enhancing the performance of IR sensors are presented together with cutting-edge developments in related fields that drive IR spectroscopy forward in its role as a versatile analytical technology with a bright past and an even brighter future.
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Peters JT, Wechsler ME, Peppas NA. Advanced biomedical hydrogels: molecular architecture and its impact on medical applications. Regen Biomater 2021; 8:rbab060. [PMID: 34925879 PMCID: PMC8678442 DOI: 10.1093/rb/rbab060] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Revised: 09/22/2021] [Accepted: 10/18/2021] [Indexed: 12/13/2022] Open
Abstract
Hydrogels are cross-linked polymeric networks swollen in water, physiological aqueous solutions or biological fluids. They are synthesized by a wide range of polymerization methods that allow for the introduction of linear and branched units with specific molecular characteristics. In addition, they can be tuned to exhibit desirable chemical characteristics including hydrophilicity or hydrophobicity. The synthesized hydrogels can be anionic, cationic, or amphiphilic and can contain multifunctional cross-links, junctions or tie points. Beyond these characteristics, hydrogels exhibit compatibility with biological systems, and can be synthesized to render systems that swell or collapse in response to external stimuli. This versatility and compatibility have led to better understanding of how the hydrogel's molecular architecture will affect their physicochemical, mechanical and biological properties. We present a critical summary of the main methods to synthesize hydrogels, which define their architecture, and advanced structural characteristics for macromolecular/biological applications.
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Affiliation(s)
- Jonathan T Peters
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, 200 E. Dean Keeton, Austin, TX 78712, USA
- Institute for Biomaterials, Drug Delivery, and Regenerative Medicine, The University of Texas at Austin, 107 W. Dean Keeton, Austin, TX 78712, USA
| | - Marissa E Wechsler
- Department of Biomedical Engineering and Chemical Engineering, The University of Texas at San Antonio, One UTSA Circle, San Antonio, TX, 78249, USA
| | - Nicholas A Peppas
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, 200 E. Dean Keeton, Austin, TX 78712, USA
- Institute for Biomaterials, Drug Delivery, and Regenerative Medicine, The University of Texas at Austin, 107 W. Dean Keeton, Austin, TX 78712, USA
- Department of Biomedical Engineering, The University of Texas at Austin, 107 W. Dean Keeton, Austin, TX 78712, USA
- Division of Molecular Pharmaceutics and Drug Delivery, College of Pharmacy, The University of Texas at Austin, 107 W. Dean Keeton, Austin, TX 78712, USA
- Department of Surgery and Perioperative Care, and Department of Pediatrics, Dell Medical School, The University of Texas at Austin, 1601 Trinity St., Bldg. B, Austin, TX 78712, USA
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Hijazi HY, Bottaro CS. Molecularly imprinted polymer thin-film as a micro-extraction adsorbent for selective determination of trace concentrations of polycyclic aromatic sulfur heterocycles in seawater. J Chromatogr A 2020; 1617:460824. [DOI: 10.1016/j.chroma.2019.460824] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 11/28/2019] [Accepted: 12/21/2019] [Indexed: 11/27/2022]
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Mathew D, Thomas B, Devaky KS. Design, synthesis and characterization of enzyme-analogue-built polymer catalysts as artificial hydrolases. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2019; 47:1149-1172. [DOI: 10.1080/21691401.2019.1576703] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Divya Mathew
- School of Chemical Sciences, Mahatma Gandhi University, Kottayam, Kerala, India
| | - Benny Thomas
- School of Chemical Sciences, Mahatma Gandhi University, Kottayam, Kerala, India
- Department of Chemistry, St. Berchmans College, Changanassery, India
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Liu H, Zhou Y, Qi Y, Sun Z, Gong B. Preparation of thiamphenicol magnetic surface molecularly imprinted polymers for its selective recognition of thiamphenicol in milk samples. J LIQ CHROMATOGR R T 2018. [DOI: 10.1080/10826076.2018.1531294] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Huachun Liu
- School of Chemistry and Chemical Engineering, North Minzu University, Yinchuan, China
| | - Yanqiang Zhou
- School of Chemistry and Chemical Engineering, North Minzu University, Yinchuan, China
| | - Yuxia Qi
- School of Chemistry and Chemical Engineering, North Minzu University, Yinchuan, China
| | - Zhian Sun
- School of Chemistry and Chemical Engineering, North Minzu University, Yinchuan, China
| | - Bolin Gong
- School of Chemistry and Chemical Engineering, North Minzu University, Yinchuan, China
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Sonawane SL, Asha SK. Probing cavity versus surface preference of fluorescent template molecules in molecularly imprinted polystyrene microspheres. ACTA ACUST UNITED AC 2017. [DOI: 10.1002/pola.28523] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Swapnil L. Sonawane
- Polymer Science and Engineering Division; CSIR-National Chemical Laboratory; Dr. HomiBhabha Road Pune 411008 India
- Academy of Scientific and Innovative Research; New Delhi India
| | - S. K. Asha
- Polymer Science and Engineering Division; CSIR-National Chemical Laboratory; Dr. HomiBhabha Road Pune 411008 India
- Academy of Scientific and Innovative Research; New Delhi India
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Gupta BD, Shrivastav AM, Usha SP. Surface Plasmon Resonance-Based Fiber Optic Sensors Utilizing Molecular Imprinting. SENSORS (BASEL, SWITZERLAND) 2016; 16:E1381. [PMID: 27589746 PMCID: PMC5038659 DOI: 10.3390/s16091381] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Revised: 08/17/2016] [Accepted: 08/25/2016] [Indexed: 12/25/2022]
Abstract
Molecular imprinting is earning worldwide attention from researchers in the field of sensing and diagnostic applications, due to its properties of inevitable specific affinity for the template molecule. The fabrication of complementary template imprints allows this technique to achieve high selectivity for the analyte to be sensed. Sensors incorporating this technique along with surface plasmon or localized surface plasmon resonance (SPR/LSPR) provide highly sensitive real time detection with quick response times. Unfolding these techniques with optical fiber provide the additional advantages of miniaturized probes with ease of handling, online monitoring and remote sensing. In this review a summary of optical fiber sensors using the combined approaches of molecularly imprinted polymer (MIP) and the SPR/LSPR technique is discussed. An overview of the fundamentals of SPR/LSPR implementation on optical fiber is provided. The review also covers the molecular imprinting technology (MIT) with its elementary study, synthesis procedures and its applications for chemical and biological anlayte detection with different sensing methods. In conclusion, we explore the advantages, challenges and the future perspectives of developing highly sensitive and selective methods for the detection of analytes utilizing MIT with the SPR/LSPR phenomenon on optical fiber platforms.
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Affiliation(s)
- Banshi D Gupta
- Physics Department, Indian Institute of Technology Delhi, New Delhi 110016, India.
| | - Anand M Shrivastav
- Physics Department, Indian Institute of Technology Delhi, New Delhi 110016, India.
| | - Sruthi P Usha
- Physics Department, Indian Institute of Technology Delhi, New Delhi 110016, India.
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Masoumi A, Hemmati K, Ghaemy M. Recognition and selective adsorption of pesticides by superparamagnetic molecularly imprinted polymer nanospheres. RSC Adv 2016. [DOI: 10.1039/c6ra05873f] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Selective adsorption of pesticides phosalone, diazinon, and chlorpyrifos from aqueous solution by superparamagnetic molecularly imprinted polymer nanosphere.
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Affiliation(s)
- Arameh Masoumi
- Polymer Research Laboratory
- Faculty of Chemistry
- University of Mazandaran
- Babolsar
- Iran
| | - Khadijeh Hemmati
- Polymer Research Laboratory
- Faculty of Chemistry
- University of Mazandaran
- Babolsar
- Iran
| | - Mousa Ghaemy
- Polymer Research Laboratory
- Faculty of Chemistry
- University of Mazandaran
- Babolsar
- Iran
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Koetting MC, Peters JT, Steichen SD, Peppas NA. Stimulus-responsive hydrogels: Theory, modern advances, and applications. MATERIALS SCIENCE & ENGINEERING. R, REPORTS : A REVIEW JOURNAL 2015; 93:1-49. [PMID: 27134415 PMCID: PMC4847551 DOI: 10.1016/j.mser.2015.04.001] [Citation(s) in RCA: 543] [Impact Index Per Article: 60.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Over the past century, hydrogels have emerged as effective materials for an immense variety of applications. The unique network structure of hydrogels enables very high levels of hydrophilicity and biocompatibility, while at the same time exhibiting the soft physical properties associated with living tissue, making them ideal biomaterials. Stimulus-responsive hydrogels have been especially impactful, allowing for unprecedented levels of control over material properties in response to external cues. This enhanced control has enabled groundbreaking advances in healthcare, allowing for more effective treatment of a vast array of diseases and improved approaches for tissue engineering and wound healing. In this extensive review, we identify and discuss the multitude of response modalities that have been developed, including temperature, pH, chemical, light, electro, and shear-sensitive hydrogels. We discuss the theoretical analysis of hydrogel properties and the mechanisms used to create these responses, highlighting both the pioneering and most recent work in all of these fields. Finally, we review the many current and proposed applications of these hydrogels in medicine and industry.
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Affiliation(s)
- Michael C. Koetting
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, TX 78712, United States
- Institute for Biomaterials, Drug Delivery, and Regenerative Medicine, The University of Texas at Austin, Austin, TX 78712, United States
| | - Jonathan T. Peters
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, TX 78712, United States
- Institute for Biomaterials, Drug Delivery, and Regenerative Medicine, The University of Texas at Austin, Austin, TX 78712, United States
| | - Stephanie D. Steichen
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX 78712, United States
- Institute for Biomaterials, Drug Delivery, and Regenerative Medicine, The University of Texas at Austin, Austin, TX 78712, United States
| | - Nicholas A. Peppas
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, TX 78712, United States
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX 78712, United States
- College of Pharmacy, The University of Texas at Austin, Austin, TX 78712, United States
- Institute for Biomaterials, Drug Delivery, and Regenerative Medicine, The University of Texas at Austin, Austin, TX 78712, United States
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Kamra T, Zhou T, Montelius L, Schnadt J, Ye L. Implementation of Molecularly Imprinted Polymer Beads for Surface Enhanced Raman Detection. Anal Chem 2015; 87:5056-61. [DOI: 10.1021/acs.analchem.5b00774] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Tripta Kamra
- Division of Pure & Applied Biochemistry, Department of Chemistry, Lund University, Box 124, 221 00 Lund, Sweden
- Division of Synchrotron Radiation Research, Department of Physics, Lund University, Box
118, 221 00 Lund, Sweden
- Division of Solid State Physics, Department of Physics, Lund University, Box
118, 221 00 Lund, Sweden
| | - Tongchang Zhou
- Division of Pure & Applied Biochemistry, Department of Chemistry, Lund University, Box 124, 221 00 Lund, Sweden
| | - Lars Montelius
- Division of Solid State Physics, Department of Physics, Lund University, Box
118, 221 00 Lund, Sweden
| | - Joachim Schnadt
- Division of Synchrotron Radiation Research, Department of Physics, Lund University, Box
118, 221 00 Lund, Sweden
| | - Lei Ye
- Division of Pure & Applied Biochemistry, Department of Chemistry, Lund University, Box 124, 221 00 Lund, Sweden
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12
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An L, Wang J, Pang Z, Xi R. Magnetic molecularly imprinted silica gel for enrofloxacin recognition. Colloids Surf A Physicochem Eng Asp 2014. [DOI: 10.1016/j.colsurfa.2014.03.075] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Development of molecularly imprinted polymer in porous film format for binding of phenol and alkylphenols from water. Int J Mol Sci 2014; 15:1338-57. [PMID: 24447925 PMCID: PMC3907872 DOI: 10.3390/ijms15011338] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2013] [Revised: 01/04/2014] [Accepted: 01/09/2014] [Indexed: 11/30/2022] Open
Abstract
Molecularly imprinted polymers (MIPs) were fabricated on glass slides with a “sandwich” technique giving ~20 μm thick films. Methanol/water as a solvent, and polyethyleneglycol and polyvinylacetate as solvent modifiers, were used to give a porous morphology, which was studied with scanning electron microscopy and gravimetric analysis. Various MIPs were synthesized through non-covalent imprinting with phenol as the template; itaconic acid, 4-vinylpyridine, and styrene as monomers; ethylene glycol dimethacrylate, triethylene glycol dimethacrylate, and pentaerythritol triacrylate (PETA) as cross-linkers. Binding and imprinting properties of the MIPs were evaluated based on phenol adsorption isotherms. Since phenol has only one weakly acidic hydroxyl group and lacks unique structural characteristics necessary for binding specificity, the preparation of selective MIPs was challenging. The recognition of phenol via hydrogen bonding is suppressed in water, while hydrophobic interactions, though promoted, are not specific enough for highly-selective phenol recognition. Nevertheless, the styrene-PETA MIP gave modest imprinting effects, which were higher at lower concentrations (Imprinting Factor (IF) = 1.16 at 0.5 mg·L−1). The isotherm was of a Freundlich type over 0.1–40 mg·L−1 and there was broad cross-reactivity towards other structurally similar phenols. This shows that phenol MIPs or simple adsorbents can be developed based on styrene for hydrophobic binding, and PETA to form a tighter, hydrophilic network.
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Yang J, Shih WY, Meng FC. Development of the Headspace SPME/ATR-IR Method for Detection of Chlorinated Aromatic Compounds in Soils. J CHIN CHEM SOC-TAIP 2013. [DOI: 10.1002/jccs.200400115] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Cheong WJ, Yang SH, Ali F. Molecular imprinted polymers for separation science: a review of reviews. J Sep Sci 2012; 36:609-28. [PMID: 23281278 DOI: 10.1002/jssc.201200784] [Citation(s) in RCA: 322] [Impact Index Per Article: 26.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2012] [Revised: 10/06/2012] [Accepted: 10/06/2012] [Indexed: 11/06/2022]
Abstract
Molecular imprinted polymer is an artificial receptor made by imprinting molecules of a template in a polymer matrix followed by removing the template molecules via thorough washing to give the permanent template grooves. They show favored affinity to the template molecule compared to other molecules, and this property is the basic driving force for such diverse application of this techniques. Such techniques have been increasingly employed in a wide scope of applications such as chromatography, sample pretreatment, purification, catalysts, sensors, and drug delivery, etc., mostly in bioanalytical areas. A major part of them is related to development of new stationary phases and their application in chromatography and sample pretreatment. Embodiments of molecular imprinted polymer materials have been carried out in a variety of forms such as irregularly ground particles, regular spherical particles, nanoparticles, monoliths in a stainless steel or capillary column, open tubular layers in capillaries, surface attached thin layers, membranes, and composites, etc. There have been numerous review articles on molecular imprinted polymer issues. In this special review, the reviews in recent ca. 10 years will be categorized into several subgroups according to specified topics in separation science, and each review in each subgroup will be introduced in the order of date with brief summaries and comments on new developments and different scopes of prospects. Brief summaries of each categories and conclusive future perspectives are also given.
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Affiliation(s)
- Won Jo Cheong
- Department of Chemistry, Inha University, Namku, Incheon, South Korea.
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Computational Approaches in the Design of Synthetic Receptors. SPRINGER SERIES ON CHEMICAL SENSORS AND BIOSENSORS 2012. [DOI: 10.1007/5346_2012_22] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Cela-Pérez M, Castro-López M, Lasagabáster-Latorre A, López-Vilariño J, González-Rodríguez M, Barral-Losada L. Synthesis and characterization of bisphenol-A imprinted polymer as a selective recognition receptor. Anal Chim Acta 2011; 706:275-84. [DOI: 10.1016/j.aca.2011.09.002] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2011] [Revised: 08/31/2011] [Accepted: 09/01/2011] [Indexed: 11/24/2022]
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Vasapollo G, Sole RD, Mergola L, Lazzoi MR, Scardino A, Scorrano S, Mele G. Molecularly imprinted polymers: present and future prospective. Int J Mol Sci 2011; 12:5908-45. [PMID: 22016636 PMCID: PMC3189760 DOI: 10.3390/ijms12095908] [Citation(s) in RCA: 548] [Impact Index Per Article: 42.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2011] [Revised: 08/03/2011] [Accepted: 08/17/2011] [Indexed: 11/16/2022] Open
Abstract
Molecular Imprinting Technology (MIT) is a technique to design artificial receptors with a predetermined selectivity and specificity for a given analyte, which can be used as ideal materials in various application fields. Molecularly Imprinted Polymers (MIPs), the polymeric matrices obtained using the imprinting technology, are robust molecular recognition elements able to mimic natural recognition entities, such as antibodies and biological receptors, useful to separate and analyze complicated samples such as biological fluids and environmental samples. The scope of this review is to provide a general overview on MIPs field discussing first general aspects in MIP preparation and then dealing with various application aspects. This review aims to outline the molecularly imprinted process and present a summary of principal application fields of molecularly imprinted polymers, focusing on chemical sensing, separation science, drug delivery and catalysis. Some significant aspects about preparation and application of the molecular imprinting polymers with examples taken from the recent literature will be discussed. Theoretical and experimental parameters for MIPs design in terms of the interaction between template and polymer functionalities will be considered and synthesis methods for the improvement of MIP recognition properties will also be presented.
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Affiliation(s)
- Giuseppe Vasapollo
- Department of Engineering of Innovation, University of Salento, via per Arnesano km 1, Lecce 73100, Italy; E-Mails: (R.D.S.); (L.M.); (M.R.L.); (A.S.); (S.S.); (G.M.)
| | - Roberta Del Sole
- Department of Engineering of Innovation, University of Salento, via per Arnesano km 1, Lecce 73100, Italy; E-Mails: (R.D.S.); (L.M.); (M.R.L.); (A.S.); (S.S.); (G.M.)
| | - Lucia Mergola
- Department of Engineering of Innovation, University of Salento, via per Arnesano km 1, Lecce 73100, Italy; E-Mails: (R.D.S.); (L.M.); (M.R.L.); (A.S.); (S.S.); (G.M.)
| | - Maria Rosaria Lazzoi
- Department of Engineering of Innovation, University of Salento, via per Arnesano km 1, Lecce 73100, Italy; E-Mails: (R.D.S.); (L.M.); (M.R.L.); (A.S.); (S.S.); (G.M.)
| | - Anna Scardino
- Department of Engineering of Innovation, University of Salento, via per Arnesano km 1, Lecce 73100, Italy; E-Mails: (R.D.S.); (L.M.); (M.R.L.); (A.S.); (S.S.); (G.M.)
| | - Sonia Scorrano
- Department of Engineering of Innovation, University of Salento, via per Arnesano km 1, Lecce 73100, Italy; E-Mails: (R.D.S.); (L.M.); (M.R.L.); (A.S.); (S.S.); (G.M.)
| | - Giuseppe Mele
- Department of Engineering of Innovation, University of Salento, via per Arnesano km 1, Lecce 73100, Italy; E-Mails: (R.D.S.); (L.M.); (M.R.L.); (A.S.); (S.S.); (G.M.)
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Xu ZX, Gao HJ, Zhang LM, Chen XQ, Qiao XG. The biomimetic immunoassay based on molecularly imprinted polymer: a comprehensive review of recent progress and future prospects. J Food Sci 2011; 76:R69-75. [PMID: 21535786 DOI: 10.1111/j.1750-3841.2010.02020.x] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
UNLABELLED Immunoassay, based on a selective affinity of the biological antibody for its antigen, is one of the most usual analytical methods in food safety and environmental chemistry. However, it presents several drawbacks because of the nature of the antibody. Molecular imprinting technique, due to its high selectivity and stability, ease of preparation and low cost, has shown great potential in producing artificial antibodies in biomimetic immunoassays. This article focuses on the recent states, advantages, current problems and outlooks of molecularly imprinted radio, fluoro, enzyme-linked and chemiluminescent immunoassays, and biomimetic immunosensor, with special emphasis on the challenges in developing biomimetic enzyme-linked immunosorbent assays (BELISAs). The biomimetic immunoassay method will provide an important new analysis platform in food safety, although the sensitivity and specificity is relatively low. PRACTICAL APPLICATION As a new simple analysis method, the biomimetic immunoassay has attractive prospect, although some limitations were existed in real-sample assay. In this critical review, some promising solutions for overcoming its drawbacks were put forward, which may promote the more quick development and extensive application of this method in food safety.
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Affiliation(s)
- Z X Xu
- College of Food Science and Engineering, Shandong Agricultural Univ, Taian 271018, China
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Apodaca DC, Pernites RB, Ponnapati R, Del Mundo FR, Advincula RC. Electropolymerized Molecularly Imprinted Polymer Film: EIS Sensing of Bisphenol A. Macromolecules 2011. [DOI: 10.1021/ma2010525] [Citation(s) in RCA: 88] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Dahlia C. Apodaca
- Department of Chemistry and Department of Chemical and Biomolecular Engineering, University of Houston, Houston, Texas 77204-5003, United States
- Institute of Chemistry, University of the Philippines, Diliman, Quezon City Philippines 1101
| | - Roderick B. Pernites
- Department of Chemistry and Department of Chemical and Biomolecular Engineering, University of Houston, Houston, Texas 77204-5003, United States
| | - Ramakrishna Ponnapati
- Department of Chemistry and Department of Chemical and Biomolecular Engineering, University of Houston, Houston, Texas 77204-5003, United States
| | - Florian R. Del Mundo
- Institute of Chemistry, University of the Philippines, Diliman, Quezon City Philippines 1101
| | - Rigoberto C. Advincula
- Department of Chemistry and Department of Chemical and Biomolecular Engineering, University of Houston, Houston, Texas 77204-5003, United States
- Institute of Chemistry, University of the Philippines, Diliman, Quezon City Philippines 1101
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21
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Beardslee LA, Demirci KS, Luzinova Y, Mizaikoff B, Heinrich SM, Josse F, Brand O. Liquid-phase chemical sensing using lateral mode resonant cantilevers. Anal Chem 2011; 82:7542-9. [PMID: 20715842 DOI: 10.1021/ac1010102] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Liquid-phase operation of resonant cantilevers vibrating in an out-of-plane flexural mode has to date been limited by the considerable fluid damping and the resulting low quality factors (Q factors). To reduce fluid damping in liquids and to improve the detection limit for liquid-phase sensing applications, resonant cantilever transducers vibrating in their in-plane rather than their out-of-plane flexural resonant mode have been fabricated and shown to have Q factors up to 67 in water (up to 4300 in air). In the present work, resonant cantilevers, thermally excited in an in-plane flexural mode, are investigated and applied as sensors for volatile organic compounds in water. The cantilevers are fabricated using a complementary metal oxide semiconductor (CMOS) compatible fabrication process based on bulk micromachining. The devices were coated with chemically sensitive polymers allowing for analyte sorption into the polymer. Poly(isobutylene) (PIB) and poly(ethylene-co-propylene) (EPCO) were investigated as sensitive layers with seven different analytes screened with PIB and 12 analytes tested with EPCO. Analyte concentrations in the range of 1-100 ppm have been measured in the present experiments, and detection limits in the parts per billion concentration range have been estimated for the polymer-coated cantilevers exposed to volatile organics in water. These results demonstrate significantly improved sensing properties in liquids and indicate the potential of cantilever-type mass-sensitive chemical sensors operating in their in-plane rather than out-of-plane flexural modes.
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Affiliation(s)
- L A Beardslee
- Microelectronics Research Center, Georgia Institute of Technology, Atlanta, Georgia 30332, USA.
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22
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Bompart M, Haupt K, Ayela C. Micro and Nanofabrication of Molecularly Imprinted Polymers. Top Curr Chem (Cham) 2011; 325:83-110. [DOI: 10.1007/128_2011_308] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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23
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Bompart M, De Wilde Y, Haupt K. Chemical nanosensors based on composite molecularly imprinted polymer particles and surface-enhanced Raman scattering. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2010; 22:2343-8. [PMID: 20354977 DOI: 10.1002/adma.200904442] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Affiliation(s)
- Marc Bompart
- Compiègne University of Technology, UMR CNRS, France
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24
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Computational investigation and synthesis of a sol–gel imprinted material for sensing application of some biologically active molecules. Anal Chim Acta 2010; 667:63-70. [DOI: 10.1016/j.aca.2010.04.005] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2009] [Revised: 10/30/2009] [Accepted: 04/01/2010] [Indexed: 11/22/2022]
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25
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Van Biesen G, Wiseman JM, Li J, Bottaro CS. Desorption electrospray ionization-mass spectrometry for the detection of analytes extracted by thin-film molecularly imprinted polymers. Analyst 2010; 135:2237-40. [DOI: 10.1039/c0an00331j] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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26
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Direct detection of analyte binding to single molecularly imprinted polymer particles by confocal Raman spectroscopy. Biosens Bioelectron 2009; 25:568-71. [DOI: 10.1016/j.bios.2009.01.020] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2008] [Revised: 12/17/2008] [Accepted: 01/13/2009] [Indexed: 11/19/2022]
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27
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Wang S, Xu Z, Fang G, Zhang Y, Liu B, Zhu H. Development of a biomimetic enzyme-linked immunosorbent assay method for the determination of estrone in environmental water using novel molecularly imprinted films of controlled thickness as artificial antibodies. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2009; 57:4528-4534. [PMID: 19489616 DOI: 10.1021/jf900505k] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
We developed a fast and new direct competitive biomimetic enzyme-linked immunosorbent assay (BELISA) method for the determination of estrone in environmental water based on a novel molecularly imprinted film of controlled thickness as an artificial antibody. The imprinted film was directly synthesized on the well surface of MaxiSorp polystyrene 96-well plate by a room temperature ionic liquid-mediated chemical oxidative polymerization in conjunction with molecular imprinting technology. This novel film was characterized, and results showed that it exhibited an antibody-like binding ability, rapid adsorption speed, high stability, and hydrophilicity, which was particularly advantageous and suitable for BELISA development. This BELISA method had a higher selectivity for estrone than for the structurally related compounds, and competitive binding studies demonstrated various degrees of cross-reactivity with five estrogenic compounds ranging from 30 to 47%. Eighty minutes of analysis time was reduced when compared to that of traditional ELISA, while the imprinted film was able to be reused for more than 50 times without loss of sensitivity. The IC(50) (calculated as the concentration giving 50% inhibition of color development) and the detection limit values under optimized experimental conditions were 200 +/- 40 microg L(-1) and 8.0 +/- 0.2 microg L(-1), respectively. This developed method was applied to the determination of estrone in spiked environmental water samples with excellent recoveries ranging from 80 to 95%, and the results correlated well with that obtained using the high performance liquid chromatography method.
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Affiliation(s)
- Shuo Wang
- Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, Tianjin University of Science and Technology, Tianjin, China.
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28
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Matsui J, Takayose M, Akamatsu K, Nawafune H, Tamaki K, Sugimoto N. Molecularly imprinted nanocomposites for highly sensitive SPR detection of a non-aqueous atrazine sample. Analyst 2009; 134:80-6. [DOI: 10.1039/b803350a] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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29
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Bompart M, Haupt K. Molecularly Imprinted Polymers and Controlled/Living Radical Polymerization. Aust J Chem 2009. [DOI: 10.1071/ch09124] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Molecularly imprinted polymers (MIPs) are tailor-made biomimetic receptors that are obtained by polymerization in the presence of molecular templates. They contain binding sites for target molecules with affinities and specificities on a par with those of natural receptors such as antibodies, hormone receptors, or enzymes. A great majority of the literature in the field describes materials based on polymers obtained by free radical polymerization. In order to solve general problems associated with MIPs, in particular their heterogeneity in terms of inner morphology and distribution of binding site affinities, it has been suggested to use modern methods of controlled/living radical polymerization for their synthesis. This also facilitates their generation in the form of nanomaterials, nanocomposites, and thin films, a strong recent trend in the field. The present paper reviews recent advances in the molecular imprinting area, with special emphasis on the use of controlled polymerization methods, their benefits, and current limitations.
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30
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Synthesis of TiO2 Hybrid Molecular Imprinted Polymer for Ethofumesate Linked by Silane Coupling Agent. J Inorg Organomet Polym Mater 2008. [DOI: 10.1007/s10904-008-9227-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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31
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Zhang C, Zhong S, Yang Z. Cellulose acetate-based molecularly imprinted polymeric membrane for separation of vanillin and o-vanillin. BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING 2008. [DOI: 10.1590/s0104-66322008000200014] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
| | - Shian Zhong
- College of Chemistry and Chemical Engineering, China
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32
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33
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Potyrailo RA, Mirsky VM. Combinatorial and High-Throughput Development of Sensing Materials: The First 10 Years. Chem Rev 2008; 108:770-813. [DOI: 10.1021/cr068127f] [Citation(s) in RCA: 214] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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34
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Zhang H, Song T, Zong F, Chen T, Pan C. Synthesis and characterization of molecularly imprinted polymers for phenoxyacetic acids. Int J Mol Sci 2008; 9:98-106. [PMID: 19325723 PMCID: PMC2635595 DOI: 10.3390/ijms9010098] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2007] [Revised: 11/15/2007] [Accepted: 11/29/2007] [Indexed: 11/30/2022] Open
Abstract
2-methylphenoxyacetic acid (2-MPA), 2-methyl-4-chlorophenxyacetic acid (MCPA) and 4-chlorophenoxyacetic acid (4-CPA) were imprinted to investigate the cross-selectivities of molecularly imprinted polymers (MIPs). The result indicates that 2-MPA, which is similar in shape, size and functionality with phenoxyacetic herbicides, are suitable to be used as a suitable template to prepare the MIPs for retaining phenoxyacetic herbicides. To study the ion-pair interactions between template molecules and functional monomer 4-vinylpiridine (4-VP), computational molecular modeling was employed. The data indicate that the cross-selectivities of MIPs for phenoxyacetic acid herbicides depend on the binding energies of complexes.
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Affiliation(s)
- Huiting Zhang
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100094, P.R. China
| | - Tao Song
- College of Chemistry, Beijing Normal University, Beijing 100085; P.R. China
| | - Fulin Zong
- Institute for the Control of Agrochemicals, Ministry of Agriculture, P.R. China
| | - Tiechun Chen
- Institute for the Control of Agrochemicals, Ministry of Agriculture, P.R. China
| | - Canping Pan
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100094, P.R. China
- Author to whom correspondence should be addressed; E-mail:
, Fax: +86 10 62733620
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35
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Ayela C, Vandevelde F, Lagrange D, Haupt K, Nicu L. Combining Resonant Piezoelectric Micromembranes with Molecularly Imprinted Polymers. Angew Chem Int Ed Engl 2007. [DOI: 10.1002/ange.200703881] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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36
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Ayela C, Vandevelde F, Lagrange D, Haupt K, Nicu L. Combining Resonant Piezoelectric Micromembranes with Molecularly Imprinted Polymers. Angew Chem Int Ed Engl 2007; 46:9271-4. [DOI: 10.1002/anie.200703881] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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37
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Development of a sensor prepared by entrapment of MIP particles in electrosynthesised polymer films for electrochemical detection of ephedrine. Biosens Bioelectron 2007; 23:1152-6. [PMID: 17997092 DOI: 10.1016/j.bios.2007.09.020] [Citation(s) in RCA: 102] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2007] [Revised: 09/25/2007] [Accepted: 09/27/2007] [Indexed: 11/23/2022]
Abstract
A voltammetric sensor for (-)-ephedrine has been prepared by a novel approach based on immobilisation of an imprinted polymer for ephedrine (MIPE) in an electrosynthesised polypyrrole (PPY) film. Composite films were grown potentiostatically at 1.0 V vs. Pt (QRE) on a glassy carbon electrode using an unconventional "upside-down" (UD) geometry for the three-electrode cell. As a consequence, a high MIP loading was obtained, as revealed by SEM. The sensor response was evaluated, after overoxidation of PPY matrix, by cyclic voltammetry after pre-concentration in a buffered solution of analyte in 0.5-3 mM concentration range. An ephedrine peak at approximately 0.9 V increasing with concentration and saturating at high concentrations was evident. PPY-modified electrode showed a response, which was distinctly lower than the MIP response for the same concentration of the template. The effect of potential interferences including compounds usually found in human fluids (ascorbic acid, uric acid, urea, glucose, sorbitol, glycine, dopamine) was examined.
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38
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Zhang H, Song T, Zhang W, Hua W, Pan C. Retention behavior of phenoxyacetic herbicides on a molecularly imprinted polymer with phenoxyacetic acid as a dummy template molecule. Bioorg Med Chem 2007; 15:6089-95. [PMID: 17614288 DOI: 10.1016/j.bmc.2007.06.039] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2007] [Revised: 06/13/2007] [Accepted: 06/16/2007] [Indexed: 10/23/2022]
Abstract
Molecular imprinted polymers (MIPs) binding with phenoxyacetic acid (PA) as a dummy template molecule were synthesized via thermal initiation in aqueous medium. The retention behaviors of benzoic acid (BA), PA, 2-methyl-4-chlorophenoxyacetic acid (MCPA), 4-chlorophenoxyacetic acid (4-CPA), and 2,4-dichlorophenoxyacetic acid (2,4-D) on this MIP column indicate that this material can selectively retain phenoxyacetic herbicides. To investigate these recognition mechanisms, the interactions between the functional monomer 4-vinylpyridine (4-VP) and PA or 2,4-D were investigated by computational modeling. (1)H NMR spectroscopy of 2,4-D titrated by 4-VP was recorded. The chemical shift of the 2,4-D acidic proton (12.15-14.32ppm) shows the existence of the ion-pair interaction. This kind of polymers could be useful as stationary phases to extract 2,4-D, 4-CPA or MCPA and avoid leakage of a trace amount of target analyte remaining in the MIPs.
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Affiliation(s)
- Huiting Zhang
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100094, China
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39
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Rao TP, Prasad K, Kala R, Gladis JM. Biomimetic Sensors for Toxic Pesticides and Inorganics based on Optoelectronic/Electrochemical Transducers—An Overview. Crit Rev Anal Chem 2007. [DOI: 10.1080/10408340701244664] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- T. Prasada Rao
- a Regional Research Laboratory (CSIR) , Trivandrum , India
| | - K. Prasad
- a Regional Research Laboratory (CSIR) , Trivandrum , India
| | - R. Kala
- a Regional Research Laboratory (CSIR) , Trivandrum , India
| | - J. Mary Gladis
- a Regional Research Laboratory (CSIR) , Trivandrum , India
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40
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Wei S, Jakusch M, Mizaikoff B. Investigating the mechanisms of 17β-estradiol imprinting by computational prediction and spectroscopic analysis. Anal Bioanal Chem 2007; 389:423-31. [PMID: 17569033 DOI: 10.1007/s00216-007-1358-0] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2007] [Revised: 05/08/2007] [Accepted: 05/10/2007] [Indexed: 10/23/2022]
Abstract
Molecular dynamics simulations combined with spectroscopic analysis were applied to understand the nature of recognition in molecularly imprinted polymers (MIPs), and for optimizing the MIP formulation. The best monomers for synthesizing imprinted materials for 17beta-estradiol (BE2) were selected by evaluating the strength of the template-monomer interaction derived from molecular dynamics simulations. A number of potential functional monomers for BE2 were screened for hydrogen-bonding strength in order to analyze template-monomer interactions favorable for synthesizing noncovalent MIPs, with the simulations revealing that methacrylic acid, 2-(diethylamino)ethyl methacrylate, and methacrylamide provided the highest binding affinity to BE2. These theoretical predictions agree with previously reported results on batch rebinding studies using the corresponding functional monomers for synthesizing a series of MIPs. Molecular analysis such as (1)H NMR was used for experimentally confirming the prevalent template-monomer interactions derived from the modeling results. Molecular dynamics simulations indicating monomer dimerization in the prepolymerization solution correlated with the nature of the porogenic solvent, which was confirmed by NMR studies on hydrogen-bonding interactions of methacrylic acid in different solvents. Furthermore, batch rebinding studies revealed that the specific functionalities of the monomers essential to rebinding are retained after polymerization, which proves that the application of computational methods for modeling the prepolymerization solution provides useful information for optimizing real MIP systems.
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Affiliation(s)
- Shuting Wei
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332-0400, USA
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41
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Legido-Quigley C, Oxelbark J, De Lorenzi E, Zurutuza-Elorza A, Cormack PAG. Chromatographic characterisation, under highly aqueous conditions, of a molecularly imprinted polymer binding the herbicide 2,4-dichlorophenoxyacetic acid. Anal Chim Acta 2007; 591:22-8. [PMID: 17456420 DOI: 10.1016/j.aca.2007.01.022] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2006] [Revised: 01/11/2007] [Accepted: 01/15/2007] [Indexed: 12/01/2022]
Abstract
The affinity of a 2,4-dichlorophenoxyacetic acid (2,4-D) molecularly imprinted polymer (MIP), which was synthesised directly in an aqueous organic solvent, for its template (2,4-D) was studied and compared with the affinity exhibited by two other reference (control) polymers, NIPA and NIPB, for the same analyte. Zonal chromatography was performed to establish the optimal selectivity, expressed as imprinting factor (IF), under chromatographic conditions more aqueous than those described so far in the literature. Frontal analysis (FA) was performed on columns packed with these polymers, using an optimized mobile phase composed of methanol/phosphate buffer (50/50, v/v), to extract adsorption isotherm data and retrieve binding parameters from the best isotherm model. Surprisingly, the template had comparable and strong affinity for both MIP (K = 3.8x10(4) M(-1)) and NIPA (K = 1.9x10(4) M(-1)), although there was a marked difference in the saturation capacities of selective and non-selective sites, as one would expect for an imprinted polymer. NIPB acts as a true control polymer in the sense that it has relatively low affinity for the template (K = 8.0x10(2) M(-1)). This work provides the first frontal chromatographic characterization of such a polymer in a water-rich environment over a wide concentration range. The significance of this work stems from the fact that the chromatographic approach used is generic and can be applied readily to other analytes, but also because there is an increasing demand for well-characterised imprinted materials that function effectively in aqueous media and are thus well-suited for analytical science applications involving, for example, biofluids and environmental water samples.
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Affiliation(s)
- C Legido-Quigley
- Department of Pharmaceutical Chemistry, Viale Taramelli 12, University of Pavia, 27100 Pavia, Italy
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42
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Sreenivasan K. Identification of salicylic acid using surface modified polyurethane film using an imprinted layer of polyaniline. Anal Chim Acta 2007; 583:284-8. [PMID: 17386557 DOI: 10.1016/j.aca.2006.10.019] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2006] [Revised: 10/07/2006] [Accepted: 10/11/2006] [Indexed: 11/29/2022]
Abstract
The surface of polyurethane (PU) was modified by coating a thin layer of polyaniline (PAN) by oxidizing aniline using ammonium persulfate. Affinity sites for salicylic acid (SA) were created in the coated layer by non-covalent imprinting method. The imprinted layer adsorbed SA five times more compared to the nonimprinted surface reflecting the creation of affinity sites specific to SA on the surface. The equilibrium was attained relatively faster indicating that a material of this kind is suitable for sensing applications. The selectivity in recognizing the print molecule by the imprinted surface was assessed by comparing the extent of uptake of other structurally resembling molecules namely O-amino benzoic acid and acetyl salicylic acid. The selectivity factor was found to be 22 and 16.5. The adsorbed SA was detected using the technique of Fourier transform attenuated total internal reflection infrared spectroscopy (FT-ATR-IR). The results show that molecularly imprinted surface in combination with FT-IR is a useful approach for the sensing applications.
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Affiliation(s)
- K Sreenivasan
- Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences & Technology, Poojapura, Trivandrum 695012, India.
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43
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A solid-state and suspended-state magic angle spinning nuclear magnetic resonance spectroscopic investigation of a 9-ethyladenine molecularly imprinted polymer. POLYMER 2007. [DOI: 10.1016/j.polymer.2006.10.036] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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44
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Wei S, Jakusch M, Mizaikoff B. Capturing molecules with templated materials—Analysis and rational design of molecularly imprinted polymers. Anal Chim Acta 2006; 578:50-8. [PMID: 17723694 DOI: 10.1016/j.aca.2006.06.077] [Citation(s) in RCA: 82] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2006] [Revised: 06/19/2006] [Accepted: 06/24/2006] [Indexed: 11/30/2022]
Abstract
The creation of synthetic tailor-made receptors capable of recognizing desired molecular targets with high affinity and selectivity is a persistent long-term goal for researchers in the fields of chemical, biological, and pharmaceutical research. Compared to biomacromolecular receptors, these synthetic receptors promise simplified production and processing, less costs, and more robust receptor architectures. During recent decades, molecularly imprinted polymers (MIPs) are widely considered mimics of natural molecular receptors suitable for a diversity of applications ranging from biomimetic sensors, to separations and biocatalysis. A remaining challenge for the next generation of MIPs is the synthesis of deliberately designed and highly efficient receptor architectures suitable for recognizing biologically relevant molecules, for which natural receptors are either not prevalent, or difficult to isolate and utilize. Hence, this review discusses recent advances in synthetic receptor technology for biomolecules (e.g. drugs, amino acids, steroids, proteins, entire cells, etc.) via molecular imprinting techniques. Surface imprinting methods and epitope imprinting approaches have been introduced for protein recognition at imprinted surfaces. Imprinting techniques in aqueous solution or organic-water co-solvents have been introduced avoiding denaturation of biomolecules during MIP synthesis. In addition, improved bioreactivity of entire enzyme or active site mimics generated by molecular imprinting will be highlighted. Finally, the emerging importance of molecular modeling and molecular dynamics studies detailing the intermolecular interactions between the template species, the porogenic solvent molecules, and the involved monomer and cross-linker in the pre-polymerization solution will be addressed yielding a rational approach toward next-generation MIP technology.
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Affiliation(s)
- Shuting Wei
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332-0400, USA
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45
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Xiong Y, Zhou H, Zhang Z, He D, He C. Determination of hydralazine with flow injection chemiluminescence sensor using molecularly imprinted polymer as recognition element. J Pharm Biomed Anal 2006; 41:694-700. [PMID: 16459047 DOI: 10.1016/j.jpba.2006.01.008] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2005] [Revised: 12/26/2005] [Accepted: 01/03/2006] [Indexed: 11/29/2022]
Abstract
A novel flow injection chemiluminescence (CL) sensor for hydralazine determination using molecularly imprinted polymer (MIP) as recognition element is reported. Hydralazine-MIP was prepared through non-covalent copolymerization using methacrylic acid (MAA) monomer, hydralazine template and ethylene glycol dimethacrylate (EGDMA) cross-linker. Particles of the MIP were packed into a v-shape glass tube for on-line adsorption of the analyte of hydralazine. The adsorbed hydralazine could be sensed by its great enhancing effect on the CL reaction between luminol and periodate. The CL intensity is linear to hydralazine concentration in the range from 2x10(-9) to 8x10(-7) g/mL. The detection limit is 6x10(-10) g/mL (3sigma) and the relative standard deviation is 2.8% (n=7) for 8x10(-9) g/mL hydralazine. The selective experiment showed that the selectivity and sensitivity of the CL method could be greatly improved when MIP was used as recognition element in the flow-injection CL sensor. The sensor was reversible and reusable. It could be used for more than 100 times. It has been used directly to determine the hydralazine in human urine.
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Affiliation(s)
- Yan Xiong
- Institute of Analytical Science, Department of Chemistry, Southwest China University, Beibei, Chongqing 400715, PR China.
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46
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A 9-vinyladenine-based molecularly imprinted polymeric membrane for the efficient recognition of plant hormone 1H-indole-3-acetic acid. Anal Chim Acta 2006. [DOI: 10.1016/j.aca.2006.03.062] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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47
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Potyrailo RA. Polymeric Sensor Materials: Toward an Alliance of Combinatorial and Rational Design Tools? Angew Chem Int Ed Engl 2006; 45:702-23. [PMID: 16419032 DOI: 10.1002/anie.200500828] [Citation(s) in RCA: 160] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Increased selectivity, response speed, and sensitivity in the chemical and biological determinations of gases and liquids are of great interest. Particular attention is paid to polymeric sensor materials, which are applicable to sensors exploiting various energy transduction principles, such as radiant, electrical, mechanical, and thermal energy. Ideally, numerous functional parameters of sensor materials can be tailored to meet specific needs using rational design approaches. However, increasing the structural and functional complexity of polymeric sensor materials makes it more difficult to predict the desired properties. Combinatorial and high-throughput methods have had an impact on all areas of research on polymer-based sensor materials including homo- and copolymers, formulated materials, polymeric structures with engineered morphology, and molecular shape-recognition materials. Herein we report on the state-of-the-art, the development trends, and the remaining knowledge gaps in the area of combinatorial polymeric sensor materials design.
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Affiliation(s)
- Radislav A Potyrailo
- General Electric Company, Global Research Center, Niskayuna, New York 12309, USA.
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Potyrailo RA. Materialien für Sensorpolymere: Möglichkeiten kombinatorischen Designs. Angew Chem Int Ed Engl 2006. [DOI: 10.1002/ange.200500828] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Sreenivasan K. Detection of creatinine enriched on a surface imprinted polystyrene film using FT-ATR-IR. J Mol Recognit 2006; 19:408-12. [PMID: 16927446 DOI: 10.1002/jmr.797] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
The surface of polystyrene (PS) was chemically modified by coating a thin layer of polyaniline (PANI) by oxidizing aniline using ammonium persulfate. Affinity sites for creatinine, a clinically relevant molecule, were created in the coated layer by adding creatinine as print molecules during the oxidation. The imprinted layer adsorbed creatinine was compared to non-imprinted surface reflecting the creation of creatinine-specific sites on the surface. The equilibrium was attained rapidly, indicating that a material of this kind is suitable for sensing applications. The adsorbed creatinine on the surface was detected using the technique of Fourier transform attenuated total internal reflection infra red spectroscopy (FT-ATR-IR). The results show that molecularly imprinted surface can enrich molecules of interest and the enriched molecules can be detected using FT-IR.
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Affiliation(s)
- K Sreenivasan
- Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences & Technology, Poojapura, Trivandrum 695012, India.
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Hunt CE, Ansell RJ. Use of fluorescence shift and fluorescence anisotropy to evaluate the re-binding of template to (S)-propranolol imprinted polymers. Analyst 2006; 131:678-83. [PMID: 16633582 DOI: 10.1039/b518248d] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The binding of (R)- and (S)-propranolol to an (S)-propranolol imprinted polymer in organic and aqueous solutions has been studied using fluorescence. The amount of propranolol that binds can be measured by separating non-bound propranolol from the polymer by centrifugation, and measuring the fluorescence intensity. However, this work demonstrates that other measurements can indicate how much propranolol has bound without the need to separate bound and non-bound analyte. In toluene + 0.5% AcOH, and in aqueous buffer (25 mM citrate pH 6 + 0.5% Triton X100) the fluorescence anisotropy increases as the fraction of analyte bound to the polymer increases. In aqueous buffer, binding to the polymer is also accompanied by a change in the relative intensities of fluorescence at 322 nm and at 352 nm. These non-separation techniques have been used to show that the imprinted polymer binds more (S)-propranolol than a non-imprinted polymer, and at least in organic solvent, shows selectivity for (S)- over (R)-propranolol.
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