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Sullivan MV, Nanalal S, Dean BE, Turner NW. Molecularly imprinted polymer hydrogel sheets with metalloporphyrin-incorporated molecular recognition sites for protein capture. Talanta 2024; 266:125083. [PMID: 37598443 DOI: 10.1016/j.talanta.2023.125083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 08/08/2023] [Accepted: 08/14/2023] [Indexed: 08/22/2023]
Abstract
Metalloporphyrins are often found in nature as coordination recognition sites within biological process, and synthetically offer the potential for use in therapeutic, catalytic and diagnostic applications. While porphyrin containing biological recognition elements have stability limitations, molecularly imprinted polymers bearing these structures offer an alternative with excellent robustness and the ability to work in extreme conditions. In this work, we synthesised a polymerizable porphyrin and metalloporphyrin and have incorporated these as co-monomers within a hydrogel thin-sheet MIP for the specific recognition of bovine haemoglobin (BHb). The hydrogels were evaluated using Scatchard analysis, with Kd values of 10.13 × 10-7, 5.30 × 10-7, and 3.40 × 10-7 M, for the control MIP, porphyrin incorporated MIP and the iron-porphyrin incorporated MIP, respectively. The MIPs also observed good selectivity towards the target protein with 73.8%, 77.4%, and 81.2% rebinding of the BHb target for the control MIP, porphyrin incorporated MIP and the iron-porphyrin incorporated MIP, respectively, compared with the non-imprinted (NIP) counterparts. Specificity was determined against a non-target protein, Bovine Serum Albumin (BSA). The results indicate that the introduction of the metalloporphyrin as a functional co-monomer is significantly beneficial to the recognition of a MIP, further enhancing MIP capabilities at targeting proteins.
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Affiliation(s)
- Mark V Sullivan
- Leicester School of Pharmacy, De Montfort University, The Gateway, Leicester, LE1 9BH, United Kingdom; Department of Chemistry, University of Sheffield, Dainton Building, Brook Hill, Sheffield, S3 7HF, United Kingdom
| | - Sakshi Nanalal
- Leicester School of Pharmacy, De Montfort University, The Gateway, Leicester, LE1 9BH, United Kingdom
| | - Bethanie E Dean
- Leicester School of Pharmacy, De Montfort University, The Gateway, Leicester, LE1 9BH, United Kingdom; Department of Chemistry, University of Warwick, Library Road, Coventry, CV4 7AL, United Kingdom
| | - Nicholas W Turner
- Leicester School of Pharmacy, De Montfort University, The Gateway, Leicester, LE1 9BH, United Kingdom; Department of Chemistry, University of Sheffield, Dainton Building, Brook Hill, Sheffield, S3 7HF, United Kingdom.
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Elamin MB, Ali SMA, Essousi H, Chrouda A, Alhaidari LM, Jaffrezic-Renault N, Barhoumi H. An Electrochemical Sensor for Sulfadiazine Determination Based on a Copper Nanoparticles/Molecularly Imprinted Overoxidized Polypyrrole Composite. SENSORS (BASEL, SWITZERLAND) 2023; 23:1270. [PMID: 36772311 PMCID: PMC9919664 DOI: 10.3390/s23031270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 01/12/2023] [Accepted: 01/18/2023] [Indexed: 06/18/2023]
Abstract
To protect consumers from risks related to overexposure to sulfadiazine, total residues of this antibacterial agent in animal-origin foodstuffs not exceed international regulations. To this end, a new electrochemical sensor based on a molecularly imprinted polymer nanocomposite using overoxidized polypyrrole and copper nanoparticles for the detection of sulfadiazine is elaborated. After optimization of the preparation of the electrochemical sensors, their differential pulse voltammetric signal exhibits an excellent stability and reproducibility at 1.05 V, with a large linear range between 10-9 and 10-5 mol L-1 and a low detection limit of 3.1 × 10-10 mol L-1. The produced sulfadiazine sensor was successfully tested in real milk samples. The combination of the properties of the electrical conduction of copper nanoparticles with the properties of the preconcentration of the molecularly imprinted overoxidized polypyrrole allows for the highly sensitive detection of sulfadiazine, even in real milk samples. This strategy is new and leads to the lowest detection limit yet achieved, compared to those of the previously published sulfadiazine electrochemical sensors.
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Affiliation(s)
- Manahil Babiker Elamin
- Department of Chemistry, Faculty of Science Al-Zulfi, Majmaah University, Majmaah 11952, Saudi Arabia
| | | | - Houda Essousi
- Laboratory of Interfaces and Advanced Materials, Faculty of Sciences, Monastir University, Monastir 5000, Tunisia
| | - Amani Chrouda
- Department of Chemistry, Faculty of Science Al-Zulfi, Majmaah University, Majmaah 11952, Saudi Arabia
| | - Laila M. Alhaidari
- Department of Chemistry, Faculty of Science Al-Zulfi, Majmaah University, Majmaah 11952, Saudi Arabia
| | | | - Houcine Barhoumi
- Laboratory of Interfaces and Advanced Materials, Faculty of Sciences, Monastir University, Monastir 5000, Tunisia
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Limaee NY, Rouhani S, Olya ME, Najafi F. Selective 2,4-dichlorophenoxyacetic acid optosensor employing a polyethersulfone nanofiber-coated fluorescent molecularly imprinted polymer. POLYMER 2019. [DOI: 10.1016/j.polymer.2019.05.067] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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4
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Essousi H, Barhoumi H. Electroanalytical application of molecular imprinted polyaniline matrix for dapsone determination in real pharmaceutical samples. J Electroanal Chem (Lausanne) 2018. [DOI: 10.1016/j.jelechem.2018.04.039] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Afsarimanesh N, Mukhopadhyay SC, Kruger M. Molecularly Imprinted Polymer-Based Electrochemical Biosensor for Bone Loss Detection. IEEE Trans Biomed Eng 2017; 65:1264-1271. [PMID: 28858783 DOI: 10.1109/tbme.2017.2744667] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Serum C-terminal telopeptide of type I collagen (CTx-I) assays quantify the fragment of CTx-I released throughout the procedure of bone remodeling. CTx-I is a key bone turnover biomarker where any variation in the level of CTx-I can be an indication of increased bone resorption. This study focuses on a new strategy for the prognosis of bone loss by monitoring the concentration of CTx-I in serum. An interdigital capacitive sensor together with electrochemical impedance spectroscopy was employed to assess the dielectric properties of the test solution. Artificial antibodies have been prepared for CTx-I molecules using the molecular imprinting technique. The sensor was functionalized using the synthesized molecular imprinted polymer in order to introduce the selectivity of CTx-I biomarker to the sensor. Calibration experiments were performed using different known concentration of sample solutions. The proposed biosensor showed a good linear response between 0.1 and 2.5 ng/mL. The detection limit of 0.09 ng/mL was found, encompassing the normal reference ranges required for recognition of bone turnover. Unknown real serum samples obtained from sheep blood were analysed using the proposed biosensor. The validation of the suggested technique was done using enzyme-linked immunosorbent assay (ELISA). The developed biosensor exhibited a good correlation with ELISA.
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TAKEUCHI T, HAYASHI T, ICHIKAWA S, KAJI A, MASUI M, MATSUMOTO H, SASAO R. Molecularly Imprinted Tailor-Made Functional Polymer Receptors for Highly Sensitive and Selective Separation and Detection of Target Molecules. CHROMATOGRAPHY 2016. [DOI: 10.15583/jpchrom.2016.007] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
| | | | | | - Ayaka KAJI
- Graduate School of Engineering, Kobe University
| | | | | | - Reo SASAO
- Graduate School of Engineering, Kobe University
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7
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Affiliation(s)
- Hyungwoo Kim
- Department of Materials Science and Engineering; College of Engineering; Seoul National University; Seoul 151-744 Korea
| | - Youngdo Kim
- Department of Materials Science and Engineering; College of Engineering; Seoul National University; Seoul 151-744 Korea
| | - Ji Young Chang
- Department of Materials Science and Engineering; College of Engineering; Seoul National University; Seoul 151-744 Korea
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Awino JK, Zhao Y. Molecularly imprinted nanoparticles as tailor-made sensors for small fluorescent molecules. Chem Commun (Camb) 2014; 50:5752-5. [DOI: 10.1039/c4cc01516a] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Huang J, Hu Y, Hu Y, Li G. Disposable terbium (III) salicylate complex imprinted membrane using solid phase surface fluorescence method for fast separation and detection of salicylic acid in pharmaceuticals and human urine. Talanta 2013; 107:49-54. [PMID: 23598191 DOI: 10.1016/j.talanta.2012.12.054] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2012] [Revised: 12/26/2012] [Accepted: 12/30/2012] [Indexed: 10/27/2022]
Abstract
In this work, a simple, low cost, selective and sensitive complex imprinted membrane (CIM) for solid-phase fluorescent detection was developed with terbium (III) salicylate as complex template. Terbium-sensitized luminescence was employed for monitoring salicylic acid (SA) based on the fluorescence enhancement effect of benzoic acid derivatives on lanthanide ion Tb (III). The resulting CIM showed good fluorescent response and high selectivity towards SA with Tb as pivot in protic solvents, while demonstrating better analytical performance than the controlled membranes. The optimized adsorption time was 10 min, indicating rapid kinetics of the imprinted membrane. The linear response of CIM to SA was from 0.20 to 10mg/L with limit of detection (LOD) of 0.040 mg/L. The prepared CIM was successfully applied to the analysis of salicylic acid in pharmaceuticals and spiked human urine with recoveries of 80.6%-88.1%. The analytical results of the proposed method were in good agreement with those obtained by high performance liquid chromatography (HPLC) method, indicating that the developed membrane has acceptable practicability for fast determination of SA in real samples.
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Affiliation(s)
- Jianxiang Huang
- School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275, China
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Liu Z, Lv Y, Gao J, Li X, Zhai X, Zhao J, Xu X. Molecularly imprinted poly(MAA-co-AM) composite membranes for selective recognition of nicosulfuron herbicide. J Appl Polym Sci 2012. [DOI: 10.1002/app.36938] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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11
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Ueki T, Watanabe M. Polymers in Ionic Liquids: Dawn of Neoteric Solvents and Innovative Materials. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2012. [DOI: 10.1246/bcsj.20110225] [Citation(s) in RCA: 124] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Takeshi Ueki
- Department of Chemistry and Biotechnology, Yokohama National University
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Turner NW, Holdsworth CI, McCluskey A, Bowyer MC. N-2-Propenyl-(5-dimethylamino)-1-naphthalene Sulfonamide, a Novel Fluorescent Monomer for the Molecularly Imprinted Polymer-Based Detection of 2,4-Dinitrotoluene in the Gas Phase. Aust J Chem 2012. [DOI: 10.1071/ch12155] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Fluorescent molecularly imprinted polymers (MIP) specific for 2,4-dinitrotoluene (DNT) have been synthesised using a novel monomer N-2-propenyl-(5-dimethylamino)-1-naphthalene sulfonamide. Three formats of the polymer were produced: a traditional bulk monolith ground into particles, a flexible, but highly cross-linked plasticiser-modified free standing membrane, and a hybrid material consisting of particles embedded in a poly(acrylonitrile) phase inversed film. Within all materials, a clearly defined imprinting effect was observed upon exposure to DNT vapour at room temperature. In all cases, preferential rebinding of DNT to the molecularly imprinted materials (3–5 times) over their non-imprinted (NIP) equivalents was evident within <10 min of contact with the DNT vapour stream. Fluorographic images of the fluorescent polymers showed the DNT binding-induced quenching to be significantly higher in the MIP material than in the non-imprinted control polymer.
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Phthalocyanine-based molecularly imprinted polymers as nucleoside receptors. Met Based Drugs 2011; 2008:281843. [PMID: 18288245 PMCID: PMC2225506 DOI: 10.1155/2008/281843] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2007] [Accepted: 10/31/2007] [Indexed: 11/27/2022] Open
Abstract
A molecularly imprinted polymer (MIP) for
tri-O-acetyladenosine (TOAA), PPM(TOAA), was
prepared by the combined use of methacrylic acid (MAA) and
Zn(II)tetra(4′-methacryloxyphenoxy) phthalocyanine as functional
monomers. This MIP exhibited a higher binding ability for TOAA
compared to the MIP prepared using only MAA, PM(TOAA), in batch
rebinding tests. Scatchard analysis gave a higher association
constant of PPM(TOAA) for TOAA (2.96×104 M−1) than that of
PM(TOAA) (1.48×104 M−1). The MIP
prepared using only the zinc-phthalocyanine, PP(TOAA), did
not show any binding capacity for TOAA. This means that the
phthalocyanine in the MIP contributes to higher affinities,
although it barely interacts with TOAA. Since selectivity
for this kind of MIPs is more important than binding
affinity, the binding of TOAA and a structurally related
compound,
tri-O-acetyluridine (TOAU), on the polymers was
investigated. Both PPM(TOAA) and PM(TOAA) exhibited binding
affinities for TOAA while they did not show any binding capacity
for TOAU.
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Behavior of phenols and phenoxyacids on a bisphenol-A imprinted polymer. Application for selective solid-phase extraction from water and urine samples. Int J Mol Sci 2011; 12:3322-39. [PMID: 21686187 PMCID: PMC3116193 DOI: 10.3390/ijms12053322] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2011] [Revised: 03/08/2011] [Accepted: 05/10/2011] [Indexed: 11/23/2022] Open
Abstract
A molecularly imprinted polymer (MIP), obtained by precipitation polymerisation with 4-vinylpyridine as the functional monomer, ethylene glycol dimethacrylate as cross-linker, and bisphenol-A (BPA) as template, was prepared. The binding site configuration of the BPA-MIP was examined using Scatchard analysis. Moreover, the behaviour of the BPA-MIP for the extraction of several phenolic compounds (bisphenol-A, bisphenol-F, 4-nitrophenol, 3-methyl-4-nitrophenol) and phenoxyacid herbicides such as 2,4-D, 2,4,5-T and 2,4,5-TP has been studied in organic and aqueous media in the presence of other pesticides in common use. It was possible to carry out the selective preconcentration of the target analytes from the organic medium with recoveries of higher than 70%. In an aqueous medium, hydrophobic interactions were found to exert a remarkably non-specific contribution to the overall binding process. Several parameters affecting the extraction efficiency of the BPA-MIP were evaluated to achieve the selective preconcentration of phenols and phenoxyacids from aqueous samples. The possibility of using the BPA-MIP as a selective sorbent to preconcentrate these compounds from other samples such as urine and river water was also explored.
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Huang J, Hu Y, Hu Y, Li G. Development of metal complex imprinted solid-phase microextraction fiber for 2,2′-dipyridine recognition in aqueous medium. Talanta 2011; 83:1721-9. [DOI: 10.1016/j.talanta.2010.12.001] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2010] [Revised: 11/26/2010] [Accepted: 12/01/2010] [Indexed: 10/18/2022]
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16
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Liu R, Guan G, Wang S, Zhang Z. Core-shell nanostructured molecular imprinting fluorescent chemosensor for selective detection ofatrazine herbicide. Analyst 2011; 136:184-90. [DOI: 10.1039/c0an00447b] [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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17
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Ma J, Yuan L, Ding M, Wang S, Ren F, Zhang J, Du S, Li F, Zhou X. The study of core–shell molecularly imprinted polymers of 17β-estradiol on the surface of silica nanoparticles. Biosens Bioelectron 2011; 26:2791-5. [DOI: 10.1016/j.bios.2010.10.045] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2010] [Revised: 10/21/2010] [Accepted: 10/25/2010] [Indexed: 10/18/2022]
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18
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Zhang SJ, Huang YP, Liu ZS, Duan HQ. Via protoporphyrin to the synthesis of levofloxacin-imprinted polymer. POLYM ADVAN TECHNOL 2010. [DOI: 10.1002/pat.1766] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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19
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Joseph R, Girish Kumar K. Differential pulse voltammetric determination and catalytic oxidation of sulfamethoxazole using [5,10,15,20- tetrakis (3-methoxy-4-hydroxy phenyl) porphyrinato] Cu (II) modified carbon paste sensor. Drug Test Anal 2010; 2:278-83. [DOI: 10.1002/dta.129] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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20
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Holland N, Frisby J, Owens E, Hughes H, Duggan P, McLoughlin P. The influence of polymer morphology on the performance of molecularly imprinted polymers. POLYMER 2010. [DOI: 10.1016/j.polymer.2009.10.035] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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21
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RNA nucleoside recognition by phthalocyanine-based molecularly imprinted polymers. JOURNAL OF POLYMER RESEARCH 2009. [DOI: 10.1007/s10965-009-9356-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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22
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Wang G, Cao Q, Zhu X, Yang X, Yang M, Ding Z. Molecular imprinted solid-phase extraction of huperzine A fromHuperzia Serrata. J Appl Polym Sci 2009. [DOI: 10.1002/app.30247] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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23
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Tominaga Y, Kubo T, Kaya K, Hosoya K. Effective Recognition on the Surface of a Polymer Prepared by Molecular Imprinting Using Ionic Complex. Macromolecules 2009. [DOI: 10.1021/ma802880z] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Yuichi Tominaga
- Graduate School of Environmental Studies, Tohoku University, Aoba 6-6-20, Aramaki, Aobaku, Sendai 9808579, Japan
| | - Takuya Kubo
- Graduate School of Environmental Studies, Tohoku University, Aoba 6-6-20, Aramaki, Aobaku, Sendai 9808579, Japan
| | - Kunimitsu Kaya
- Graduate School of Environmental Studies, Tohoku University, Aoba 6-6-20, Aramaki, Aobaku, Sendai 9808579, Japan
| | - Ken Hosoya
- Graduate School of Environmental Studies, Tohoku University, Aoba 6-6-20, Aramaki, Aobaku, Sendai 9808579, Japan
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24
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Albumin molecularly imprinted polymer prepared with a semi-rigid crosslinker in mixed organic/aqueous media. Mikrochim Acta 2009. [DOI: 10.1007/s00604-009-0151-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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25
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Chou SK, Syu MJ. Via zinc(II) protoporphyrin to the synthesis of poly(ZnPP-MAA-EGDMA) for the imprinting and selective binding of bilirubin. Biomaterials 2009; 30:1255-62. [DOI: 10.1016/j.biomaterials.2008.11.029] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2008] [Accepted: 11/27/2008] [Indexed: 12/13/2022]
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26
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Nguyen TH, Ansell RJ. Fluorescent imprinted polymer sensors for chiral amines. Org Biomol Chem 2009; 7:1211-20. [DOI: 10.1039/b816733h] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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27
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Wang B, Liu MZ, Liang R, Ding SL, Chen ZB, Chen SL, Jin SP. MMTCA Recognition by Molecular Imprinting in Interpenetrating Polymer Network Hydrogels Based on Poly(acrylic acid) and Poly(vinyl alcohol). Macromol Biosci 2008; 8:417-25. [DOI: 10.1002/mabi.200700176] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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28
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Li Q, Zhang WY, Li X. Preparation and Properties of Salicylic Acid-Imprinted Polymers from Emulsions. ACTA ACUST UNITED AC 2008. [DOI: 10.1002/masy.200850112] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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29
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de Jesus Rodrigues Santos W, Lima PR, Tarley CRT, Kubota LT. A catalytically active molecularly imprinted polymer that mimics peroxidase based on hemin: application to the determination of p-aminophenol. Anal Bioanal Chem 2007; 389:1919-29. [PMID: 17901947 DOI: 10.1007/s00216-007-1601-8] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2007] [Revised: 08/20/2007] [Accepted: 08/28/2007] [Indexed: 10/22/2022]
Abstract
Despite the increasing number of applications of molecularly imprinted polymers (MIP) in analytical chemistry, the synthesis of polymers with hemin introduced as the catalytic center to mimic the active site of peroxidase remains as a challenge. In the current work, a new type of molecularly imprinted polymer (MIP) was synthesized with 4-aminophenol (4-APh) as the template and two monomers: hemin, which acts as the catalytic center, and methacrylic acid (MAA), which is used to build the active sites. This work shows that MIP successfully mimics peroxidase. For this purpose, a flow injection analysis system coupled to an amperometric detector was investigated through multivariate analysis. The determination of 4-APh was not affected by the equimolar presence of structurally similar phenol compounds, including catechol, 4-chloro-3-methylphenol, 2-aminophenol, guaiachol, chloroguaiachol and 2-cresol, thus highlighting the good performance of the imprinted polymer. Under the optimized experimental conditions, an analytical curve covering a wide linear response range from 0.8 up to 500 micromol L(-1) (r > 0.999) was obtained, and the method gave satisfactory precisions (n = 8), as evaluated via the relative standard deviation (RSD), of 4.1 and 3.2% for solutions of 4-APh of 50 and 500 micromol L(-1), respectively. Recoveries of 96-111% from water samples (tap water and river water) spiked with 4-APh were achieved, thus illustrating the accuracy of the proposed system.
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30
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Gong FC, Wu DX, Cao Z, He XC. A fluorescence enhancement-based sensor using glycosylated metalloporphyrin as a recognition element for levamisole assay. Biosens Bioelectron 2006; 22:423-8. [PMID: 16701990 DOI: 10.1016/j.bios.2006.04.005] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2005] [Revised: 03/01/2006] [Accepted: 04/04/2006] [Indexed: 11/17/2022]
Abstract
A fluorescence sensor based on the supermolecular recognition by glycosylated metalloporphyrin for levamisole (LEV) assay is reported. For the preparation of a LEV-sensitive active material, 5, 10, 15, 20-tetrakis[2-(2, 3, 4, 6-tetraacetyl-beta-D-glucopyranosyl)-1-O-phenyl] porphyrin and its metal complexes were synthesized and used in an optode membrane prepared by including glycosylated metalloporphyrin in chitosan matrice. The immobilized glycosylated metalloporphyrin is shown to be weakly fluorescent as a result of the inhibiting of the electron tansfer by central metal. The fluorescence enhancement of the metalloporphyrin modified optode membrane by LEV is based on the complexation with the central metal moiety of metalloporphyrin and weakening the inhibiting of the electron tansfer for metalloporphyrin. The glycosylated metalloporphyrin/chitosan optode membrane showed excellent selectivity toward LEV with respect to a number of interferents and exhibited stable response. The calibration graph obtained with the proposed sensor was linear over the range of 1.3x10(-5)-3.5x10(-7)ML(-1), with a detection limit of 3.5x10(-7)ML(-1) for LEV. The prepared sensor is applied for the determination of LEV in pharmaceutical preparations and the results agreed with the values obtained by the pharmacopoeia method.
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Affiliation(s)
- Fu-Chun Gong
- Department of Chemistry and Environmental Engineering, Changsha University of Science and Technology, Changsha, 410076, PR China.
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31
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Tunc Y, Hasirci N, Yesilada A, Ulubayram K. Comonomer effects on binding performances and morphology of acrylate-based imprinted polymers. POLYMER 2006. [DOI: 10.1016/j.polymer.2006.07.043] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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32
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Cheng Z, Li Y. The role of molecular recognition in regulating the catalytic activity of peroxidase-like polymers imprinted by a reductant substrate. ACTA ACUST UNITED AC 2006. [DOI: 10.1016/j.molcata.2006.04.042] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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33
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Hedin-Dahlström J, Rosengren-Holmberg JP, Legrand S, Wikman S, Nicholls IA. A Class II Aldolase Mimic. J Org Chem 2006; 71:4845-53. [PMID: 16776512 DOI: 10.1021/jo060608b] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
[structures: see text] A class II aldolase-mimicking synthetic polymer was prepared by the molecular imprinting of a complex of cobalt (II) ion and either (1S,3S,4S)-3-benzoyl-1,7,7-trimethylbicyclo[2.2.1]heptan-2-one (4a) or (1R,3R,4R)-3-benzoyl-1,7,7-trimethylbicyclo[2.2.1]heptan-2-one (4b) in a 4-vinylpyridine-styrene-divinylbenzene copolymer. Evidence for the formation of interactions between the functional monomer and the template was obtained from NMR and VIS titration studies. The polymers imprinted with the template demonstrated enantioselective recognition of the corresponding template structure, and induced a 55-fold enhancement of the rate of reaction of camphor (1) with benzaldehyde (2), relative to the solution reactions, and were also compared to reactions with a series of reference polymers. Substrate chirality was observed to influence reaction rate, and the reaction could be competitively inhibited by dibenzoylmethane (6). Collectively, the results presented provide the first example of the use of enantioselective molecularly imprinted polymers for the catalysis of carbon-carbon bond formation.
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Affiliation(s)
- Jimmy Hedin-Dahlström
- Bioorganic and Biophysical Chemistry Laboratory, Department of Chemistry and Biomedical Sciences,University of Kalmar, SE-391 82 Kalmar, Sweden
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Garcés JL, Mas F, Puy J. Conditional equilibrium constants in multicomponent heterogeneous adsorption: The conditional affinity spectrum. J Chem Phys 2006; 124:044710. [PMID: 16460203 DOI: 10.1063/1.2162876] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The concept of conditional stability constant is extended to the competitive binding of small molecules to heterogeneous surfaces or macromolecules via the introduction of the conditional affinity spectrum (CAS). The CAS describes the distribution of effective binding energies experienced by one complexing agent at a fixed concentration of the rest. We show that, when the multicomponent system can be described in terms of an underlying affinity spectrum [integral equation (IE) approach], the system can always be characterized by means of a CAS. The thermodynamic properties of the CAS and its dependence on the concentration of the rest of components are discussed. In the context of metal/proton competition, analytical expressions for the mean (conditional average affinity) and the variance (conditional heterogeneity) of the CAS as functions of pH are reported and their physical interpretation discussed. Furthermore, we show that the dependence of the CAS variance on pH allows for the analytical determination of the correlation coefficient between the binding energies of the metal and the proton. Nonideal competitive adsorption isotherm and Frumkin isotherms are used to illustrate the results of this work. Finally, the possibility of using CAS when the IE approach does not apply (for instance, when multidentate binding is present) is explored.
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Affiliation(s)
- Josep L Garcés
- Research Center of Theoretical Chemistry and Physical-Chemistry Department, Universitat de Barcelona, Marti i Franqués 1, 08028 Barcelona, Spain
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Alexander C, Andersson HS, Andersson LI, Ansell RJ, Kirsch N, Nicholls IA, O'Mahony J, Whitcombe MJ. Molecular imprinting science and technology: a survey of the literature for the years up to and including 2003. J Mol Recognit 2006; 19:106-80. [PMID: 16395662 DOI: 10.1002/jmr.760] [Citation(s) in RCA: 776] [Impact Index Per Article: 43.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Over 1450 references to original papers, reviews and monographs have herein been collected to document the development of molecular imprinting science and technology from the serendipitous discovery of Polyakov in 1931 to recent attempts to implement and understand the principles underlying the technique and its use in a range of application areas. In the presentation of the assembled references, a section presenting reviews and monographs covering the area is followed by papers dealing with fundamental aspects of molecular imprinting and the development of novel polymer formats. Thereafter, literature describing attempts to apply these polymeric materials to a range of application areas is presented.
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Affiliation(s)
- Cameron Alexander
- The School of Pharmacy, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
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Burri E, Ohm M, Daguenet C, Severin K. Site-Isolated Porphyrin Catalysts in Imprinted Polymers. Chemistry 2005; 11:5055-61. [PMID: 15977282 DOI: 10.1002/chem.200500375] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
A meso-tetraaryl ruthenium porphyrin complex having four polymerizable vinylbenzoxy groups (2) has been synthesized by reaction of pyrrole with 4-(vinylbenzoxy)benzaldehyde and subsequent metalation with [Ru3(CO)12]. The porphyrin complex was immobilized by copolymerization with ethylene glycol dimethacrylate. The resulting polymer P2 was found to catalyze the oxidation of alcohols and alkanes with 2,6-dichloropyridine N-oxide without activation by mineral acids. Under similar conditions, the homogeneous catalyst 2 was completely inefficient. By using diphenylaminomethane and 1-aminoadamantane as coordinatively bound templates during the polymerization procedure, the molecularly imprinted polymers P3 and P4 have been synthesized. Compared with the polymer P2, the imprinted catalysts displayed a significantly increased activity with rate enhancements of up to a factor of 16.
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Affiliation(s)
- Estelle Burri
- Institut de Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
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37
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Henry OYF, Cullen DC, Piletsky SA. Optical interrogation of molecularly imprinted polymers and development of MIP sensors: a review. Anal Bioanal Chem 2005; 382:947-56. [PMID: 15940451 DOI: 10.1007/s00216-005-3255-8] [Citation(s) in RCA: 105] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2005] [Revised: 04/11/2005] [Accepted: 04/11/2005] [Indexed: 10/25/2022]
Abstract
This article reviews the progress and developments achieved in the past five years (2000-2005) in the application of optical analytical techniques to the evaluation of molecularly imprinted polymer (MIP) characteristics. The MIP binding efficiency, recognition processes and selectivity have been intensively studied by optical means due to the general high sensitivity and simplicity of the utilisation of optical techniques. In addition, recent progress in the covalent linkage of MIPs to optical transducers has allowed for the realisation of highly efficient and robust optical MIP-based molecular recognition sensors. The review provides insight into the various approaches to the optical interrogation of MIPs, and is organised according to the type of optical technique employed (fluorescence, UV/Vis and infrared spectroscopy, surface plasmon resonance, chemiluminescence, refractive interference spectroscopy and Raman scattering) and the detailed strategies applied. The review also covers the recent progress achieved in the area of optical sensors based on MIPs.
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Affiliation(s)
- Olivier Y F Henry
- Institute of Bioscience and Technology, Cranfield University, Silsoe, Bedfordshire MK45 4DT, UK
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38
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Watabe Y, Hosoya K, Tanaka N, Kubo T, Kondo T, Morita M. Novel surface modified molecularly imprinted polymer focused on the removal of interference in environmental water samples for chromatographic determination. J Chromatogr A 2005; 1073:363-70. [PMID: 15909542 DOI: 10.1016/j.chroma.2004.09.016] [Citation(s) in RCA: 85] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Uniformly sized molecularly imprinted polymers (MIPs) for bisphenol A (BPA) with surface modification and immobilized intervals of functional monomers afforded by utilizing 4,4'-methylenebisphenol as a pseudo component have been prepared. MIPs for BPA were prepared using 4-vinyl pyridine immobilized in the most effective interval and ethylene glycol dimethacrylate as a functional monomer and cross-linking agent, respectively. Prepared MIPs showed significant selectivity for BPA retention and removal performance for interference in actual samples as the HPLC stationary phase compared to those of ordinary MIPs. These MIPs were employed as pretreatment media of column switching HPLC and the HPLC system provided a detection limit of 0.36 ppt when electrochemical detection was used. Actual samples, including Suwannee River natural organic matter (NOM), were applied and BPA was detected in the NOM even if widely used UV detection was employed.
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Affiliation(s)
- Yoshiyuki Watabe
- Department of Polymer Science and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
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39
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Lee JD, Greene NT, Rushton GT, Shimizu KD, Hong JI. Carbohydrate Recognition by Porphyrin-Based Molecularly Imprinted Polymers. Org Lett 2005; 7:963-6. [PMID: 15760114 DOI: 10.1021/ol047618o] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[structure: see text] Porphyrin-based molecularly imprinted polymers (MIPs) were prepared for carbohydrate recognition. A urea-appended porphyrin functional monomer was utilized to provide complementary functionality and quality binding sites throughout the polymer. Each porphyrin-based polymer demonstrates high affinity and differential selectivity for closely related carbohydrates that correlate to the structure of the template used in the imprinting process.
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Affiliation(s)
- Jung-Deog Lee
- Department of Chemistry, College of Natural Sciences, Seoul National University, Seoul 151-747, Korea
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40
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Takeuchi T, Seko A, Mukawa T. Molecularly Imprinted Polymers with Signaling Function Based on the UV–Vis Spectral Change by Diastereoselective Binding Events. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2005. [DOI: 10.1246/bcsj.78.356] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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41
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Xu YL, Liu ZS, Wang HF, Yan C, Gao RY. Chiral recognition ability of an (S)-naproxen- imprinted monolith by capillary electrochromatography. Electrophoresis 2005; 26:804-811. [PMID: 15714569 DOI: 10.1002/elps.200410171] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
The racemic naproxen was selectively recognized by capillary electrochromatography (CEC) on an (S)-naproxen-imprinted monolith, which was prepared by an in situ thermal-initiated polymerization. The recognition selectivity of a selected monolith strictly relied on the CEC conditions involved. The factors that influence the imprinting selectivity as well as the electroosmotic flow (EOF), including the applied voltage, organic solvent, salt concentration and pH value of the buffer, column temperature, and surfactant modifiers were systematically studied. Once the column was prepared, the experiment results showed that the successful chiral recognition was dependent on CEC variables. For example: the recognition could be observed in acetonitrile and ethanol electrolytes, while methanol and dimethyl sulfoxide (DMSO) electrolytes had no chiral recognition ability. The buffer with pH values of 2.6 or 3.0 at a higher salt concentration had chiral recognition ability. Column temperatures of 25-35 degrees C were optimal. Three surfactants, sodium dodecyl sulfate (SDS), cetyltrimethylammonium bromide (CTAB), and polyoxyethylene sorbitan monolaurate (Tween 20), can improve the recognition. Baseline resolution was obtained under optimized conditions and the column efficiency of the later eluent (S)-naproxen was 90 000 plates/m.
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Affiliation(s)
- Yan-Li Xu
- State Key Laboratory of Elemento-organic Chemistry, Institute of Element Organic Chemistry, Nankai University, Tianjin, P. R. China
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42
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Kubo H, Yoshioka N, Takeuchi T. Fluorescent Imprinted Polymers Prepared with 2-Acrylamidoquinoline as a Signaling Monomer. Org Lett 2005; 7:359-62. [PMID: 15673239 DOI: 10.1021/ol047992o] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
[structure: see text] A cyclobarbital-selective molecularly imprinted polymer was prepared using a fluorescent functional monomer, 2-acrylamidoquinoline. This monomer was designed to increase in fluorescence intensity upon hydrogen bonding to the cyclobarbital guest. The resultant imprinted polymers exhibited the enhancement of the fluorescence intensity when cyclobarbital was bound. Our results show that this fluorescent responsive imprinting method could be useful in the development of sensors for quantification of nonfluorescent compounds.
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Affiliation(s)
- Hiroyuki Kubo
- Graduate School of Science and Technology, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
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43
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Watabe Y, Hosoya K, Tanaka N, Kubo T, Kondo T, Morita M. Shielded molecularly imprinted polymers prepared with a selective surface modification. ACTA ACUST UNITED AC 2005. [DOI: 10.1002/pola.20674] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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44
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Rathbone DL, Bains A. Tools for fluorescent molecularly imprinted polymers. Biosens Bioelectron 2005; 20:1438-42. [PMID: 15590301 DOI: 10.1016/j.bios.2004.05.021] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2004] [Revised: 05/04/2004] [Accepted: 05/04/2004] [Indexed: 11/25/2022]
Abstract
A linear co-polymer of hexyl acrylate and quinine acrylate was prepared anchored to cellulose filtration membranes. These were used to probe quenching of the tethered fluorophore by test compounds in solution for the validation of imprinted polymer fluorescence studies. The results are compared with simple solution phase quenching studies and also for two membrane-bound imprinted polymers containing the same fluorophore.
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Affiliation(s)
- Daniel L Rathbone
- School of Life and Health Sciences, Aston University, Birmingham, B4 7ET, UK.
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45
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Takeuchi T, Mukawa T, Shinmori H. Signaling molecularly imprinted polymers: molecular recognition-based sensing materials. CHEM REC 2005; 5:263-75. [PMID: 16211586 DOI: 10.1002/tcr.20052] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Molecular imprinting is a template polymerization technique that can easily provide synthetic polymers capable of molecular recognition for given target molecules. In addition to their highly specific recognition ability, we are attempting to introduce signaling functions to molecularly imprinted polymers, enabling them to respond according to specific binding events. Some of our work regarding such signaling molecularly imprinted polymers is presented here, including molecularly imprinted polymers that induce spectral shifts of target compounds because of binding. Such compounds include hydrogen-bonding-based fluorescent imprinted polymers and metalloporphyrin-based signaling molecularly imprinted polymers.
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Affiliation(s)
- Toshifumi Takeuchi
- Graduate School of Science and Technology, Kobe University, 1-1 Rokkodai-cho, Kobe 657-8501, Japan.
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46
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Syu MJ, Deng JH, Nian YM, Chiu TC, Wu AH. Binding specificity of alpha-bilirubin-imprinted poly(methacrylic acid-co-ethylene glycol dimethylacrylate) toward alpha-bilirubin. Biomaterials 2004; 26:4684-92. [PMID: 15722139 DOI: 10.1016/j.biomaterials.2004.11.024] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2004] [Accepted: 11/16/2004] [Indexed: 11/17/2022]
Abstract
alpha-Bilirubin is an important index to determine the liver's functions. Poly(methacrylic acid-co-ethylene glycol dimethylacrylate) (poly(MAA-co-EGDMA)) imprinted with alpha-bilirubin was proposed and shown to be able to bind alpha-bilirubin specifically. The extraction condition was also discussed. Polymers prepared by imprinting bilirubin in poly(MAA-co-EGDMA) and in poly(beta-cyclodextrin-co-EGDMA) were compared. In this work, binding specificity of molecularly imprinted polymer (MIP) toward the target template, alpha-bilirubin, is discussed. Adsorption profile of alpha-bilirubin by bilirubin-imprinted poly(MAA-co-EGDMA) was measured as a function of time, from where the equilibrium could be determined. Two hours was determined to be the proper time for adsorption. Biliverdin as a rather similar analog compound of bilirubin was chosen for comparison of binding specificity in this study. Progesterone as well as testosterone was also chosen for study because they both co-exist in serum with bilirubin and might interfere with binding capacity of imprinted poly(MAA-co-EGDMA) toward alpha-bilirubin. Specificity of this polymer for bilirubin was thus confirmed by tasks carried out in mixture solutions comprised of compounds above. It is true that biliverdin contained in the binary mixture did affect the binding capacity of bilirubin. Nevertheless, polymer's binding specificity for bilirubin was essentially sufficient for recognition of alpha-bilirubin in the presence of other compounds. How MIP identified the target template molecule, alpha-bilirubin, is also elucidated.
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Affiliation(s)
- Mei-Jywan Syu
- Department of Chemical Engineering, National Cheng Kung University, Tainan, Taiwan 70101, Taiwan.
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47
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Kubo T, Hosoya K, Watabe Y, Tanaka N, Takagi H, Sano T, Kaya K. Interval immobilization technique for recognition toward a highly hydrophilic cyanobacterium toxin. J Chromatogr B Analyt Technol Biomed Life Sci 2004; 806:229-35. [PMID: 15171933 DOI: 10.1016/j.jchromb.2004.03.064] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2003] [Revised: 03/31/2004] [Accepted: 03/31/2004] [Indexed: 11/28/2022]
Abstract
A novel adsorption medium containing selective molecular recognition site for one of the powerful cyanobacterium toxins, Cylindrospermopsin (CYN) was developed using a special technique, namely interval immobilization technique. The adsorption medium was prepared using molecular assembly derived from an alternative-template molecule coupled with functional monomers for fixing the interval between the ionic functional groups in CYN. As results of liquid chromatographic evaluations, selective molecular recognition ability for CYN was observed as expected. Further studies proved that the association constant for CYN on this medium was slightly higher than that on blank polymer.
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Affiliation(s)
- Takuya Kubo
- Department of Polymer Science and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
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48
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Watabe Y, Hosoya K, Tanaka N, Kubo T, Kondo T, Morita M. Novel Surface-modified Molecularly Imprinted Polymer Focused on the Removal of Interference in Environmental Water Samples. CHEM LETT 2004. [DOI: 10.1246/cl.2004.806] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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49
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Garcés JL, Mas F, Puy J. Affinity distribution functions in multicomponent heterogeneous adsorption. Analytical inversion of isotherms to obtain affinity spectra. J Chem Phys 2004; 120:9266-76. [PMID: 15267863 DOI: 10.1063/1.1710857] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
An analytical approach for the interpretation of multicomponent heterogeneous adsorption or complexation isotherms in terms of multidimensional affinity spectra is presented. Fourier transform, applied to analyze the corresponding integral equation, leads to an inversion formula which allows the computation of the multicomponent affinity spectrum underlying a given competitive isotherm. Although a different mathematical methodology is used, this procedure can be seen as the extension to multicomponent systems of the classical Sips's work devoted to monocomponent systems. Furthermore, a methodology which yields analytical expressions for the main statistical properties (mean free energies of binding and covariance matrix) of multidimensional affinity spectra is reported. Thus, the level of binding correlation between the different components can be quantified. It has to be highlighted that the reported methodology does not require the knowledge of the affinity spectrum to calculate the means, variances, and covariance of the binding energies of the different components. Nonideal competitive consistent adsorption isotherm, widely used in metal/proton competitive complexation to environmental macromolecules, and Frumkin competitive isotherms are selected to illustrate the application of the reported results. Explicit analytical expressions for the affinity spectrum as well as for the matrix correlation are obtained for the NICCA case.
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Affiliation(s)
- Josep Lluís Garcés
- Research Center of Theoretical Chemistry and Department of Physical Chemistry, Facultat de Química, Barcelona University, C/Martí i Franqués, 1, E-08028 Barcelona, Catalonia, Spain
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50
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Striegler S. Designing selective sites in templated polymers utilizing coordinative bonds. J Chromatogr B Analyt Technol Biomed Life Sci 2004; 804:183-95. [PMID: 15093172 DOI: 10.1016/j.jchromb.2004.01.065] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
This review gives a survey over recent achievements on the design of selective sites in templated polymers. Particularly, coordinative bonds as driving force for the interaction between a substrate and a templated polymer are discussed. Recent achievements on the selective recognition of larger molecules, such as dipeptides and disaccharides, are highlighted that promise a fast development on biomolecule templated material towards enzyme-like catalysis in the up-coming years. Additionally, the achievements on the incorporation of catalytic centers based on transition metal complexes are summarized.
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Affiliation(s)
- Susanne Striegler
- Division of Inorganic Chemistry II, University of Ulm, Albert-Einstein-Allee 11, D-89069 Ulm, Germany.
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