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Nilsson PH, Al-Majdoub M, Ibrahim A, Aseel O, Suriyanarayanan S, Andersson L, Fostock S, Aastrup T, Tjernberg I, Rydén I, Nicholls IA. Quartz Crystal Microbalance Platform for SARS-CoV-2 Immuno-Diagnostics. Int J Mol Sci 2023; 24:16705. [PMID: 38069027 PMCID: PMC10705953 DOI: 10.3390/ijms242316705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 11/14/2023] [Accepted: 11/22/2023] [Indexed: 12/18/2023] Open
Abstract
Rapid and accurate serological analysis of SARS-CoV-2 antibodies is important for assessing immune protection from vaccination or infection of individuals and for projecting virus spread within a population. The quartz crystal microbalance (QCM) is a label-free flow-based sensor platform that offers an opportunity to detect the binding of a fluid-phase ligand to an immobilized target molecule in real time. A QCM-based assay was developed for the detection of SARS-CoV-2 antibody binding and evaluated for assay reproducibility. The assay was cross-compared to the Roche electrochemiluminescence assay (ECLIA) Elecsys® Anti-SARS-CoV-2 serology test kit and YHLO's chemiluminescence immunoassay (CLIA). The day-to-day reproducibility of the assay had a correlation of r2 = 0.99, p < 0.001. The assay linearity was r2 = 0.96, p < 0.001, for dilution in both serum and buffer. In the cross-comparison analysis of 119 human serum samples, 59 were positive in the Roche, 52 in the YHLO, and 48 in the QCM immunoassay. Despite differences in the detection method and antigen used for antibody capture, there was good coherence between the assays, 80-100% for positive and 96-100% for negative test results. In summation, the QCM-based SARS-CoV-2 IgG immunoassay showed high reproducibility and linearity, along with good coherence with the ELISA-based assays. Still, factors including antibody titer and antigen-binding affinity may differentially affect the various assays' responses.
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Affiliation(s)
- Per H. Nilsson
- Linnaeus University Centre for Biomaterials Chemistry, Department of Chemistry and Biomedical Sciences, Linnaeus University, SE-39182 Kalmar, Sweden; (P.H.N.); (S.S.); (L.A.)
- Department of Immunology, University of Oslo and Oslo University Hospital Rikshospitalet, Sognsvannsveien 20, NO-0372 Oslo, Norway
| | - Mahmoud Al-Majdoub
- Attana AB, Greta Arwidssons Väg 21, SE-11419 Stockholm, Sweden; (M.A.-M.); (A.I.); (S.F.); (T.A.)
| | - Ahmed Ibrahim
- Attana AB, Greta Arwidssons Väg 21, SE-11419 Stockholm, Sweden; (M.A.-M.); (A.I.); (S.F.); (T.A.)
| | - Obaidullah Aseel
- Medical Programme, Faculty of Medicine and Health Sciences, Linköping University, SE-58225 Linköping, Sweden;
| | - Subramanian Suriyanarayanan
- Linnaeus University Centre for Biomaterials Chemistry, Department of Chemistry and Biomedical Sciences, Linnaeus University, SE-39182 Kalmar, Sweden; (P.H.N.); (S.S.); (L.A.)
| | - Linnea Andersson
- Linnaeus University Centre for Biomaterials Chemistry, Department of Chemistry and Biomedical Sciences, Linnaeus University, SE-39182 Kalmar, Sweden; (P.H.N.); (S.S.); (L.A.)
| | - Samir Fostock
- Attana AB, Greta Arwidssons Väg 21, SE-11419 Stockholm, Sweden; (M.A.-M.); (A.I.); (S.F.); (T.A.)
| | - Teodor Aastrup
- Attana AB, Greta Arwidssons Väg 21, SE-11419 Stockholm, Sweden; (M.A.-M.); (A.I.); (S.F.); (T.A.)
| | - Ivar Tjernberg
- Department of Clinical Chemistry and Transfusion Medicine, Region Kalmar County, SE-39185 Kalmar, Sweden;
- Department of Biomedical and Clinical Sciences, Division of Inflammation and Infection, Linköping University, SE-58183 Linköping, Sweden
| | - Ingvar Rydén
- Department of Research, Region Kalmar County, SE-39185 Kalmar, Sweden;
- Department of Biomedical and Clinical Sciences, Division of Clinical Chemistry and Pharmacology, Linköping University, SE-58183 Linköping, Sweden
| | - Ian A. Nicholls
- Linnaeus University Centre for Biomaterials Chemistry, Department of Chemistry and Biomedical Sciences, Linnaeus University, SE-39182 Kalmar, Sweden; (P.H.N.); (S.S.); (L.A.)
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2
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Rong LH, Cheng X, Ge J, Krebs OK, Capadona JR, Caldona EB, Advincula RC. Synthesis of hyperbranched polymer films via electrodeposition and oxygen-tolerant surface-initiated photoinduced polymerization. J Colloid Interface Sci 2023; 637:33-40. [PMID: 36682116 DOI: 10.1016/j.jcis.2023.01.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 01/02/2023] [Accepted: 01/05/2023] [Indexed: 01/11/2023]
Abstract
HYPOTHESIS Hyperbranched polymers, not only possess higher functionality, but are also easier to prepare compared to dendrimers and dendric polymers. Combining electrodeposition and surface-initiated photoinduced electron transfer-reversible addition-fragmentation chain transfer (SI-PET-RAFT) polymerization is hypothesized to be a novel strategy for preparing hyperbranched polymer films on conductive surfaces without degassing. EXPERIMENTS Polymer brush grafted films with four different architectures (i.e. linear, branched, linear-block-branched, and branched-block-linear) were prepared on gold-coated glass substrates using electrodeposition, followed by SI-PET-RAFT polymerization. The resulting film structure and thickness, surface topology, absorption property, and electrochemical behavior were confirmed by spectroscopy, microscopy, microbalance technique, and impedance measurement. FINDINGS These hyperbranched polymer brushes were capable of forming a thicker but more uniformly covered films compared to linear polymer brush films, demonstrating that hyperbranched polymer films can be potentially useful for fabricating protective polymer coatings on various conductive surfaces.
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Affiliation(s)
- Li-Han Rong
- Department of Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, OH 44106, United States; Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN 37830, United States
| | - Xiang Cheng
- Department of Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, OH 44106, United States; Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN 37830, United States
| | - Jin Ge
- Department of Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, OH 44106, United States; Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN 37830, United States
| | - Olivia K Krebs
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH 44106, United States; Advanced Platform Technology Center, Rehabilitation Research and Development, Louis Stokes Cleveland Department of Veterans Affairs Medical Center, Cleveland, OH 44106, United States
| | - Jeffrey R Capadona
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH 44106, United States; Advanced Platform Technology Center, Rehabilitation Research and Development, Louis Stokes Cleveland Department of Veterans Affairs Medical Center, Cleveland, OH 44106, United States
| | - Eugene B Caldona
- Department of Coatings and Polymeric Materials, North Dakota State University, Fargo, ND 58102, United States
| | - Rigoberto C Advincula
- Department of Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, OH 44106, United States; Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN 37830, United States; Department of Chemical and Biomolecular Engineering and Institute for Advanced Materials and Manufacturing, University of Tennessee, Knoxville, TN 37996, United States.
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3
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Wang F, Liu W, Lu R, Huang JH, Zuo B, Wang X. Entropy-Enhanced Mechanochemical Activation for Thermal Degrafting of Surface-Tethered Dry Polystyrene Brushes. ACS Macro Lett 2022; 11:1041-1048. [PMID: 35920565 DOI: 10.1021/acsmacrolett.2c00263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Dry polymer brushes have attracted great attention because of their potential utility in regulating interface properties. However, it is still unknown whether dry polymer brushes will exhibit degrafting behavior as a result of thermal annealing. Herein, a study of the conformational entropy effect on thermal degrafting of dry polystyrene (PS) brushes is presented. For PS brushes with an initial grafting density (σpini) of 0.61 nm-2, degrafting behavior was observed at 393 K, and the equilibrium σp was approximately 0.14 nm-2 at 413 K. However, for brushes with σpini ≤ 0.14 nm-2, thermal degrafting was not observed even if the temperature was increased to 453 K. Furthermore, we found that the degrafting rate was faster for PS brushes with higher σpini and higher molecular weights when σpini > 0.14 nm-2. Our findings confirmed that degrafting is a mechanochemical activation process driven by tension imposed on bonds that anchor the chains to the surface, and the process is amplified by conformational entropy.
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Affiliation(s)
- Fengliang Wang
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Wenqing Liu
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Rongxing Lu
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Jian-Hua Huang
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Biao Zuo
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Xinping Wang
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China
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4
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Zimmermann R, Duval JF, Werner C, Sterling JD. Quantitative insights into electrostatics and structure of polymer brushes from microslit electrokinetic experiments and advanced modelling of interfacial electrohydrodynamics. Curr Opin Colloid Interface Sci 2022. [DOI: 10.1016/j.cocis.2022.101590] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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5
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Wang CC, Wei SC, Luo SC. Recent Advances and Biomedical Applications of Peptide-Integrated Conducting Polymers. ACS APPLIED BIO MATERIALS 2022; 5:1916-1933. [PMID: 35119258 DOI: 10.1021/acsabm.1c01194] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Conducting polymers (CPs) are of great interests to researchers around the world in biomedical applications owing to their unique electrical and mechanical properties. Besides, they are easy to fabricate and have long-term stability. These features make CPs a powerful building block of modern biomaterials. Peptide functionalization has been a versatile tool for the development of CP-based biomaterials. With the aid of peptide modifications, the biocompatibility, target selectivity, and cellular interactions of CPs can be greatly improved. Reflecting these aspects, an increasing number of studies on peptide-integrated conducting polymers have been reported recently. In this review, various kinds of peptide immobilization strategies on CPs are introduced. Moreover, the aims of peptide modification are discussed in three aspects: enhancing the specific selectivity, avoiding nonspecific adhesion, and mimicking the environment of extracellular matrix. We highlighted recent studies in the applications of peptide-integrated CPs in electrochemical sensors, antifouling surfaces, and conductive biointerfaces. These studies have shown great potentials from the integration of peptide and CPs as a versatile platform for advanced biological and clinical applications in the near future.
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Affiliation(s)
- Chi-Cha Wang
- Department of Materials Science and Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei 10617, Taiwan
| | - Shu-Chen Wei
- Department of Internal Medicine, National Taiwan University Hospital and College of Medicine, No.1 Jen Ai Road, Section 1, Taipei 10051, Taiwan
| | - Shyh-Chyang Luo
- Department of Materials Science and Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei 10617, Taiwan.,Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes (NHRI), Miaoli County, 35053 Taiwan
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6
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Gao B, Dou M, Wang J, Zhuang T, Li P, Yang F, Wang D, Ci L, Fu Y. Effect of carbon nitride synthesized by different modification strategies on the performance of carbon nitride/PVDF photocatalytic composite membranes. JOURNAL OF HAZARDOUS MATERIALS 2022; 422:126877. [PMID: 34425428 DOI: 10.1016/j.jhazmat.2021.126877] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 08/05/2021] [Accepted: 08/07/2021] [Indexed: 06/13/2023]
Abstract
Carbon nitride (CN)/polyvinylidene fluoride (PVDF) photocatalytic composite membrane (PCM) is considered as a promising candidate to improve the anti-fouling characteristic of conventional PVDF membrane and overcome the difficulty encountered during recovery of powder catalyst simultaneously. However, the effects of differently-modified CN on PCM and its mechanism are still unclear. In this study, bulk-CN (BCN), carbon defects CN (CCN), nitrogen defect CN (DCN), mesoporous CN (MCN), and nitrogen-rich CN (NCN) were incorporated into PVDF by phase inversion method. The influence of changes in the physical and chemical properties of CN, including hydrophilic groups, photocatalytic activity, and particle size, on the permeability, anti-fouling characteristic, and photocatalytic self-cleaning activity of CN/PVDF was systematically analyzed. The mechanism of excellent performance of PCM was revealed by experimental test and theoretical calculation. The flux of PCM was significantly improved by increasing the hydrophilic group on modified CN. However, the differences in particle size and interaction between different types of modified CN and PVDF chains endowed the CN/PVDF with different porosity. DCN/PVDF showed high porosity and hydrophilicity, leading to high water flux and rejection rate of 293.6 L (m2 h)-1 and 90.1%, respectively. Compared to pure PVDF, the flux recovery rate of DCN30/PVDF increased by 27.6%, and the irreversible fouling decreased from 36.9% to 9.2%. The modified CN/PVDF showed excellent photocatalytic activity for the removal of cefotaxime (CFX) and E. coli. Owing to the narrow band gap of DCN, large specific surface area, and low photogenerated carrier recombination rate, the CFX removal rate reached 99% in 2 h, and E. coli inactivation achieved 3.7 log within 4 h via DCN30/PVDF.
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Affiliation(s)
- Boru Gao
- Department of Municipal and Environmental Engineering, Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water Quality Safeguard, Beijing Jiaotong University, Haidian District, Beijing 100044, China
| | - Mengmeng Dou
- Department of Municipal and Environmental Engineering, Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water Quality Safeguard, Beijing Jiaotong University, Haidian District, Beijing 100044, China
| | - Jin Wang
- Department of Municipal and Environmental Engineering, Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water Quality Safeguard, Beijing Jiaotong University, Haidian District, Beijing 100044, China.
| | - Tao Zhuang
- Jinan Environmental Research Academy, Jinan 250102, China
| | - Pengyang Li
- Department of Municipal and Environmental Engineering, Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water Quality Safeguard, Beijing Jiaotong University, Haidian District, Beijing 100044, China
| | - Fan Yang
- Department of Municipal and Environmental Engineering, Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water Quality Safeguard, Beijing Jiaotong University, Haidian District, Beijing 100044, China
| | - Dongying Wang
- Jinan Environmental Research Academy, Jinan 250102, China
| | - Lin Ci
- Jinan Environmental Research Academy, Jinan 250102, China
| | - Yao Fu
- Jinan Environmental Research Academy, Jinan 250102, China
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7
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Gao X, Cao Z, Li C, Liu J, Liu X, Guo L. Activated carbon fiber modified with hyperbranched polyethylenimine and phytic acid for the effective adsorption and separation of In( iii). NEW J CHEM 2022. [DOI: 10.1039/d2nj03111f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The PA–HPEI–OACF constructed with PA, HPEI, and ACF displays excellent performance in the adsorption and separation of In(iii).
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Affiliation(s)
- Xuezhen Gao
- School of Chemistry & Materials Science, Ludong University, Yantai 264025, P. R. China
| | - Zhiyong Cao
- School of Chemistry & Materials Science, Ludong University, Yantai 264025, P. R. China
| | - Changzhen Li
- School of Chemistry & Materials Science, Ludong University, Yantai 264025, P. R. China
| | - Junshen Liu
- School of Chemistry & Materials Science, Ludong University, Yantai 264025, P. R. China
| | - Xunyong Liu
- School of Chemistry & Materials Science, Ludong University, Yantai 264025, P. R. China
| | - Lei Guo
- School of Chemistry & Materials Science, Ludong University, Yantai 264025, P. R. China
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8
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Chen M, Song Z, Han R, Li Y, Luo X. Low fouling electrochemical biosensors based on designed Y-shaped peptides with antifouling and recognizing branches for the detection of IgG in human serum. Biosens Bioelectron 2021; 178:113016. [DOI: 10.1016/j.bios.2021.113016] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 01/10/2021] [Accepted: 01/15/2021] [Indexed: 01/19/2023]
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9
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Anaspure P, Suriyanarayanan S, Nicholls IA. Palladium nanoparticles immobilized on polyethylenimine-derivatized gold surfaces for catalysis of Suzuki reactions: development and application in a lab-on-a-chip context. RSC Adv 2021; 11:35161-35164. [PMID: 35493148 PMCID: PMC9042875 DOI: 10.1039/d1ra06851b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Accepted: 10/24/2021] [Indexed: 11/21/2022] Open
Abstract
Gold surface-bound hyperbranched polyethyleneimine (PEI) films decorated with palladium nanoparticles have been used as efficient catalysts for a series of Suzuki reactions. This thin film-format demonstrated good catalytic efficiency (TON up to 3.4 × 103) and stability. Incorporation into a quartz crystal microbalance (QCM) instrument illustrated the potential for using this approach in lab-on-a-chip-based synthesis applications. Gold surface-bound hyperbranched polyethyleneimine (PEI) films decorated with palladium nanoparticles have been used as efficient catalysts for a series of Suzuki reactions in a lab-on-a-chip format.![]()
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Affiliation(s)
- Prasad Anaspure
- Linnaeus University Centre for Biomaterials Chemistry, Bioorganic and Biophysical Chemistry Laboratory, Department of Chemistry and Biomedical Sciences, Linnaeus University, SE-39182 Kalmar, Sweden
| | - Subramanian Suriyanarayanan
- Linnaeus University Centre for Biomaterials Chemistry, Bioorganic and Biophysical Chemistry Laboratory, Department of Chemistry and Biomedical Sciences, Linnaeus University, SE-39182 Kalmar, Sweden
| | - Ian A. Nicholls
- Linnaeus University Centre for Biomaterials Chemistry, Bioorganic and Biophysical Chemistry Laboratory, Department of Chemistry and Biomedical Sciences, Linnaeus University, SE-39182 Kalmar, Sweden
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10
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Venkatesh K, Arthanareeswaran G, Bose AC, Kumar PS. Hydrophilic hierarchical carbon with TiO2 nanofiber membrane for high separation efficiency of dye and oil-water emulsion. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.116709] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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11
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Surface Modification of Silicon Nanowire Based Field Effect Transistors with Stimuli Responsive Polymer Brushes for Biosensing Applications. MICROMACHINES 2020; 11:mi11030274. [PMID: 32155794 PMCID: PMC7143225 DOI: 10.3390/mi11030274] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 03/02/2020] [Accepted: 03/04/2020] [Indexed: 12/20/2022]
Abstract
We demonstrate the functionalization of silicon nanowire based field effect transistors (SiNW FETs) FETs with stimuli-responsive polymer brushes of poly(N-isopropylacrylamide) (PNIPAAM) and poly(acrylic acid) (PAA). Surface functionalization was confirmed by atomic force microscopy, contact angle measurements, and verified electrically using a silicon nanowire based field effect transistor sensor device. For thermo-responsive PNIPAAM, the physicochemical properties (i.e., a reversible phase transition, wettability) were induced by crossing the lower critical solution temperature (LCST) of about 32 °C. Taking advantage of this property, osteosarcomic SaoS-2 cells were cultured on PNIPAAM-modified sensors at temperatures above the LCST, and completely detached by simply cooling. Next, the weak polyelectrolyte PAA, that is sensitive towards alteration of pH and ionic strength, was used to cover the silicon nanowire based device. Here, the increase of pH will cause deprotonation of the present carboxylic (COOH) groups along the chains into negatively charged COO− moieties that repel each other and cause swelling of the polymer. Our experimental results suggest that this functionalization enhances the pH sensitivity of the SiNW FETs. Specific receptor (bio-)molecules can be added to the polymer brushes by simple click chemistry so that functionality of the brush layer can be tuned optionally. We demonstrate at the proof-of concept-level that osteosarcomic Saos-2 cells can adhere to PNIPAAM-modified FETs, and cell signals could be recorded electrically. This study presents an applicable route for the modification of highly sensitive, versatile FETs that can be applied for detection of a variety of biological analytes.
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Maziya K, Dlamini BC, Malinga SP. Hyperbranched polymer nanofibrous membrane grafted with silver nanoparticles for dual antifouling and antibacterial properties against Escherichia coli, Staphylococcus aureus and Pseudomonas aeruginosa. REACT FUNCT POLYM 2020. [DOI: 10.1016/j.reactfunctpolym.2020.104494] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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13
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Li M, Xiong Y, Wang D, Liu Y, Na B, Qin H, Liu J, Liang X, Qing G. Biomimetic nanochannels for the discrimination of sialylated glycans via a tug-of-war between glycan binding and polymer shrinkage. Chem Sci 2019; 11:748-756. [PMID: 34123048 PMCID: PMC8145919 DOI: 10.1039/c9sc05319k] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Sialylated glycans that are attached to cell surface mediate diverse cellular processes such as immune responses, pathogen binding, and cancer progression. Precise determination of sialylated glycans, particularly their linkage isomers that can trigger distinct biological events and are indicative of different cancer types, remains a challenge, due to their complicated composition and limited structural differences. Here, we present a biomimetic nanochannels system integrated with the responsive polymer polyethyleneimine-g-glucopyranoside (Glc-PEI) to solve this problem. By using a dramatic “OFF–ON” change in ion flux, the nanochannels system achieves specific recognition for N-acetylneuraminic acid (Neu5Ac, the predominant form of sialic acid) from various monosaccharides and sialic acid species. Importantly, different “OFF–ON” ratios of the conical nanochannels system allows the precise and sensitive discrimination of sialylated glycan linkage isomers, α2–3 and α2–6 linkage (the corresponding ion conductance increase ratios are 96.2% and 264%, respectively). Analyses revealed an unusual tug-of-war mechanism between polymer-glycan binding and polymer shrinkage. The low binding affinity of Glc-PEI for the α2–6-linked glycan caused considerable shrinkage of Glc-PEI layer, but the high affinity for the α2–3-linked glycan resulted in only a slight shrinkage. This competition mechanism provides a simple and versatile materials design principle for recognition or sensing systems that involve negatively charged target biomolecules. Furthermore, this work broadens the application of nanochannel systems in bioanalysis and biosensing, and opens a new route to glycan analysis that could help to uncover the mysterious and wonderful glycoworld. A glycan-responsive polymer-modified nanochannels system enables the precise discrimination of sialylated glycan linkage isomers via the different “OFF–ON” changes resulting from a “tug-of-war” between polymer-glycan binding and polymer shrinkage.![]()
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Affiliation(s)
- Minmin Li
- Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China .,Jiangxi Province Key Laboratory of Polymer Micro/Nano Manufacturing and Devices, East China University of Technology 418 Guanglan Avenue Nanchang 330013 China
| | - Yuting Xiong
- Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China .,Jiangxi Province Key Laboratory of Polymer Micro/Nano Manufacturing and Devices, East China University of Technology 418 Guanglan Avenue Nanchang 330013 China
| | - Dongdong Wang
- Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
| | - Yunhai Liu
- Jiangxi Province Key Laboratory of Polymer Micro/Nano Manufacturing and Devices, East China University of Technology 418 Guanglan Avenue Nanchang 330013 China
| | - Bing Na
- Jiangxi Province Key Laboratory of Polymer Micro/Nano Manufacturing and Devices, East China University of Technology 418 Guanglan Avenue Nanchang 330013 China
| | - Haijuan Qin
- Research Centre of Modern Analytical Technology, Tianjin University of Science and Technology Tianjin 300457 China
| | - Jinxuan Liu
- Institute of Artificial Photosynthesis, State Key Laboratory of Fine Chemicals, Dalian University of Technology Dalian 116024 China
| | - Xinmiao Liang
- Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
| | - Guangyan Qing
- Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
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14
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Liu N, Song J, Lu Y, Davis JJ, Gao F, Luo X. Electrochemical Aptasensor for Ultralow Fouling Cancer Cell Quantification in Complex Biological Media Based on Designed Branched Peptides. Anal Chem 2019; 91:8334-8340. [PMID: 31121092 DOI: 10.1021/acs.analchem.9b01129] [Citation(s) in RCA: 74] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The rapid, convenient, and selective assaying of clinical targets directly in complex biological media brings with it the potential to revolutionize diagnostics. One major hurdle to impact is retention of selectivity and a tight control of nonspecific surface interactions or biofouling. We report herein, the construction of an antifouling interface through the covalent attachment of designed branched zwitterionic peptides onto electrodeposited polyaniline film. The antifouling capability of the designed branched peptide significantly outperforms that of the commonly used PEG and linear peptides. The interfaces modified with branched peptides are exceptionally effective in reducing a nonspecific protein and cell adsorption, as verified by electrochemical and fluorescent characterization. The derived sensors with mucin1 protein (MUC1) aptamer as the recognition element detect MUC1-positive MCF-7 breast cancer cells in human serum with high sensitivity and selectivity. The linear response range of the cytosensor for the MCF-7 cell is from 50 to 106 cells/mL, with a limit of detection as low as 20 cells/mL. More importantly, the assaying performances remain unchanged in human serum owing to the presence of branched antifouling peptide, indicating feasibility of the cytosensor for practical cancer cell quantification in complex samples.
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Affiliation(s)
- Nianzu Liu
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE; Shandong Key Laboratory of Biochemical Analysis; Key Laboratory of Analytical Chemistry for Life Science in Universities of Shandong; College of Chemistry and Molecular Engineering . Qingdao University of Science and Technology , Qingdao 266042 , PR China
| | - Jingyao Song
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE; Shandong Key Laboratory of Biochemical Analysis; Key Laboratory of Analytical Chemistry for Life Science in Universities of Shandong; College of Chemistry and Molecular Engineering . Qingdao University of Science and Technology , Qingdao 266042 , PR China
| | - Yanwei Lu
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE; Shandong Key Laboratory of Biochemical Analysis; Key Laboratory of Analytical Chemistry for Life Science in Universities of Shandong; College of Chemistry and Molecular Engineering . Qingdao University of Science and Technology , Qingdao 266042 , PR China
| | - Jason J Davis
- Department of Chemistry , University of Oxford , Oxford OX1 3QZ , United Kingdom
| | - Fengxian Gao
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE; Shandong Key Laboratory of Biochemical Analysis; Key Laboratory of Analytical Chemistry for Life Science in Universities of Shandong; College of Chemistry and Molecular Engineering . Qingdao University of Science and Technology , Qingdao 266042 , PR China
| | - Xiliang Luo
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE; Shandong Key Laboratory of Biochemical Analysis; Key Laboratory of Analytical Chemistry for Life Science in Universities of Shandong; College of Chemistry and Molecular Engineering . Qingdao University of Science and Technology , Qingdao 266042 , PR China
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15
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Chen L, Liu M, Tang Y, Chen C, Wang X, Hu Z. Preparation and Properties of a Low Fouling Magnetic Nanoparticle and Its Application to the HPV Genotypes Assay in Whole Serum. ACS APPLIED MATERIALS & INTERFACES 2019; 11:18637-18644. [PMID: 31026394 DOI: 10.1021/acsami.9b04147] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Gold magnetic particles as a new carrier of disease diagnosis probes have attracted wide attention but encountered a bottleneck. That is, the interfacial properties of gold magnetic particles are susceptible to the influence of nonspecific biological molecules in actual diagnostic samples. Here, a novel nanoparticle made by the covalent attachment of polyethyleneimine and hyperbranched polyether polyol onto the gold shell surface of a magnetic bead demonstrated not only low fouling properties but also excellent stability in a variety of external environments, especially in complex biological systems. Most importantly, in its application as the probe for sensitive and selective fluorescence detection of high-risk human papillomavirus (HPV) genotypes 18, 16 in buffer, even in 100% serum, a good linear correlation with the concentration of HPV18/16 target DNA ranging from 5 nM to 1 μM was shown with the low detection limits. To our knowledge, this is one of the few successful examples of direct application of magnetic beads to the detection of disease markers in whole serum, suggesting that this material has good commercial potential and value.
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Affiliation(s)
- Lihua Chen
- Key Laboratory of Optic-Electric Sensing and Analytical Chemistry for Life Science, Ministry of Education; Shandong Key Laboratory of Biochemical Analysis; Key Laboratory of Analytical Chemistry for Life Science in Universities of Shandong, Shandong Province; Key Laboratory of Eco-Chemical Engineering; College of Chemistry and Molecular Engineering , Qingdao University of Science and Technology , Qingdao 266042 , P. R. China
- Key Laboratory of Prevention and Control of Animal Disease of Xinjiang Corps. College of Animal Science and Technology , Shihezi University , 832000 Shihezi , Xinjiang , P. R. China
| | - Mingchao Liu
- Key Laboratory of Optic-Electric Sensing and Analytical Chemistry for Life Science, Ministry of Education; Shandong Key Laboratory of Biochemical Analysis; Key Laboratory of Analytical Chemistry for Life Science in Universities of Shandong, Shandong Province; Key Laboratory of Eco-Chemical Engineering; College of Chemistry and Molecular Engineering , Qingdao University of Science and Technology , Qingdao 266042 , P. R. China
| | - Yan Tang
- Key Laboratory of Prevention and Control of Animal Disease of Xinjiang Corps. College of Animal Science and Technology , Shihezi University , 832000 Shihezi , Xinjiang , P. R. China
| | - Chuangfu Chen
- Key Laboratory of Prevention and Control of Animal Disease of Xinjiang Corps. College of Animal Science and Technology , Shihezi University , 832000 Shihezi , Xinjiang , P. R. China
| | - Xingxing Wang
- Key Laboratory of Optic-Electric Sensing and Analytical Chemistry for Life Science, Ministry of Education; Shandong Key Laboratory of Biochemical Analysis; Key Laboratory of Analytical Chemistry for Life Science in Universities of Shandong, Shandong Province; Key Laboratory of Eco-Chemical Engineering; College of Chemistry and Molecular Engineering , Qingdao University of Science and Technology , Qingdao 266042 , P. R. China
| | - Zhiqiang Hu
- Key Laboratory of Optic-Electric Sensing and Analytical Chemistry for Life Science, Ministry of Education; Shandong Key Laboratory of Biochemical Analysis; Key Laboratory of Analytical Chemistry for Life Science in Universities of Shandong, Shandong Province; Key Laboratory of Eco-Chemical Engineering; College of Chemistry and Molecular Engineering , Qingdao University of Science and Technology , Qingdao 266042 , P. R. China
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16
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Increase in Interfacial Adhesion and Electrochemical Charge Storage Capacity of Polypyrrole on Au Electrodes Using Polyethyleneimine. Sci Rep 2019; 9:2169. [PMID: 30778097 PMCID: PMC6379486 DOI: 10.1038/s41598-019-38615-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Accepted: 12/31/2018] [Indexed: 12/18/2022] Open
Abstract
High-performance devices based on conducting polymers (CPs) require the fabrication of a thick CP-coated electrode with high stability. Herein, we propose a method for enhancing the interfacial adhesion strength between a gold electrode and an electropolymerized polypyrrole (pPy) layer by introducing a polyethyleneimine (PEI) layer. Although this insulating layer hinders the initial growth of the pPy layer on the Au surface, it improves the adhesion by up to 250%. Therefore, a thick layer of pPy can be fabricated without delamination during drying. X-ray photoelectron spectroscopy shows that the PEI layer interacts with the Au surface via polar/ionic groups and van der Waals interactions. Scanning electron microscopy reveals that the cohesion of the pPy layer is stronger than the interfacial adhesion between the PEI layer and the pPy layer. Importantly, the electroactivities of pPy and its dopant are unaffected by the PEI layer, and the electrochemical storage capacity of the pPy layers on the PEI-coated Au electrodes increases with thickness, reaching ~530 mC/cm2. Negative potential sweep is detrimental to pPy layer adhesion: pPy layers on a bare Au electrode peel off instantly as the potential is swept from 0.2 to −0.7 V, and most of the charge stored in the layer becomes inaccessible. In contrast, pPy layers deposited on PEI coated Au electrode are mechanically stable and majority of the charge can be accessed, demonstrating that this method is also effective for enhancing electrochemical stability. Our simple approach can find utility in various applications involving CP-coated electrodes, where thickness-dependent performance must be improved without loss of stability.
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17
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Patil R, Miles J, Ko Y, Datta P, Rao BM, Kiserow D, Genzer J. Kinetic Study of Degrafting Poly(methyl methacrylate) Brushes from Flat Substrates by Tetrabutylammonium Fluoride. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b01832] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Rohan Patil
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695-7905, United States
| | - Jason Miles
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695-7905, United States
| | - Yeongun Ko
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695-7905, United States
| | - Preeta Datta
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695-7905, United States
| | - Balaji M. Rao
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695-7905, United States
| | - Douglas Kiserow
- US Army Research
Office, Research Triangle Park, North Carolina 27709-2211, United States
| | - Jan Genzer
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695-7905, United States
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18
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Hierarchical polymeric architectures through molecular imprinting in liquid crystalline environments. Eur Polym J 2018. [DOI: 10.1016/j.eurpolymj.2018.07.036] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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19
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Che HX, Gwee SJ, Ng WM, Ahmad AL, Lim J. Design of core-shell magnetic nanocomposite by using linear and branched polycation as an ad-layer: Influences of the structural and viscoelastic properties. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2017.12.019] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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20
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Panzarasa G, Dübner M, Soliveri G, Edler M, Griesser T. Branched poly(ethyleneimine): a versatile scaffold for patterning polymer brushes by means of remote photocatalytic lithography. NANOTECHNOLOGY 2017; 28:395302. [PMID: 28726677 DOI: 10.1088/1361-6528/aa8108] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Patterning of functional surfaces is one of the cornerstones of nanotechnology as it allows the fabrication of sensors and lab-on-a-chip devices. Here, the patterning of self-assembled monolayers of branched poly(ethyleneimine) (bPEI) on silica was achieved by means of remote photocatalytic lithography. Moreover, when 2-bromoisobutyryl-modified bPEI was used, the resulting pattern could be amplified by grafting polymer brushes by means of surface-initiated atom transfer radical polymerization. In contrast to previous reports for the patterning of bPEI, the present approach can be conducted in minutes instead of hours, reducing the exposure time to UV radiation and enhancing the overall efficiency. Furthermore, our approach is much more user-friendly, allowing a facile fabrication of patterned initiator-modified surfaces and the use of inexpensive instrumentation such as a low-power UV source and a simple photomask. Considering the versatility of bPEI as a scaffold for the development of biosensors, patterning by means of remote photocatalytic lithography will open new opportunities in a broad field of applications.
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Affiliation(s)
- Guido Panzarasa
- Christian Doppler Laboratory for Functional and Polymer Based Ink-Jet Inks, Institute of Chemistry of Polymeric Materials, Montanuniversität, Otto-Glöckel Straβe 2, A-8700 Leoben, Austria
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21
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Akkilic N, Molenaar R, Claessens MMAE, Blum C, de Vos WM. Monitoring the Switching of Single BSA-ATTO 488 Molecules Covalently End-Attached to a pH-Responsive PAA Brush. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:8803-8811. [PMID: 27525503 DOI: 10.1021/acs.langmuir.6b01064] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We describe a novel combination of a responsive polymer brush and a fluorescently labeled biomolecule, where the position of the biomolecule can be switched from inside to outside the brush and vice versa by a change in pH. For this, we grafted ultrathin, amino-terminated poly(acrylic acid) brushes to glass and silicon substrates. Individual bovine serum albumin (BSA) molecules labeled with fluorophore ATTO 488 were covalently end-attached to the polymers in this brush using a bis-N-succinimidyl-(pentaethylene glycol) linker. We investigated the dry layer properties of the brush-protein ensemble, and it is swelling behavior using spectroscopic ellipsometry. Total internal reflection fluorescence (TIRF) microscopy enabled us to study the distance-dependent switching of the fluorescently labeled protein molecules. The fluorescence emission from the labeled proteins ceased (out-state) when the polymer chains stretched away from the interface under basic pH conditions, and fluorescence recurred (in-state) when the chains collapsed under acidic conditions. Moreover, TIRF allowed us to study the fluorescence switching behavior of fluorescently labeled BSA molecules down to the single-molecule level, and we demonstrate that this switching is fast but that the exact intensity during the in-state is the result of a more random process. Control experiments verify that the switching behavior is directly correlated to the responsive behavior of the polymer brush. We propose this system as a platform for switchable sensor applications but also as a method to study the swelling and collapse of individual polymer chains in a responsive polymer brush.
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Affiliation(s)
- Namik Akkilic
- Membrane Science and Technology, and ‡Nanobiophysics, Mesa+ Institute for Nanotechnology, University of Twente , P.O. Box 217, 7500 AE Enschede, The Netherlands
| | - Robert Molenaar
- Membrane Science and Technology, and ‡Nanobiophysics, Mesa+ Institute for Nanotechnology, University of Twente , P.O. Box 217, 7500 AE Enschede, The Netherlands
| | - Mireille M A E Claessens
- Membrane Science and Technology, and ‡Nanobiophysics, Mesa+ Institute for Nanotechnology, University of Twente , P.O. Box 217, 7500 AE Enschede, The Netherlands
| | - Christian Blum
- Membrane Science and Technology, and ‡Nanobiophysics, Mesa+ Institute for Nanotechnology, University of Twente , P.O. Box 217, 7500 AE Enschede, The Netherlands
| | - Wiebe M de Vos
- Membrane Science and Technology, and ‡Nanobiophysics, Mesa+ Institute for Nanotechnology, University of Twente , P.O. Box 217, 7500 AE Enschede, The Netherlands
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22
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Gherasim CV, Luelf T, Roth H, Wessling M. Dual-Charged Hollow Fiber Membranes for Low-Pressure Nanofiltration Based on Polyelectrolyte Complexes: One-Step Fabrication with Tailored Functionalities. ACS APPLIED MATERIALS & INTERFACES 2016; 8:19145-57. [PMID: 27406046 DOI: 10.1021/acsami.6b05706] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
A new nanofiltration (NF) hollow fiber membrane is developed by using two oppositely charged polyelectrolytes coagulating into a polyelectrolyte complex (PEC) onto polyether sulfone base polymer. The particular membrane architecture emerges during a single-step procedure, allowing setting both the porous negatively charged support of the hollow fiber and the separation layer containing also the positive polyelectrolyte (PEI/PDADMAC) through a single layer dry-jet wet spinning process. The novelty is two-pronged: the composition of the hollow fiber membrane itself and its fabrication procedure (one-step fabrication of membranes employing polyelectrolytes). These result in highly permeable hollow fiber membranes with a stable separation layer and performance at par with the membranes reported in literature obtained by multistep processes. More importantly, the membranes are obtained through a simple, very fast (one-step), and less expensive procedure. The best performance among these newly obtained hollow-fiber membranes is achieved by PD5% hollow fiber (MWCO of 300 Da), which showed 7.6 L/m(2)·h·bar permeability and ∼90% rejection of MgCl2, MgSO4, and Na2SO4 at 2 bar pressure. Thus, the resulting membranes not only have the advantages of the hollow-fiber configuration, but perform very well at extremely low pressures (the lowest reported in the literature). The broad impact of the results presented in this Article lies in the potential to dramatically reduce both the fabrication (duration and complexity) and the price and desalination costs of highly performing NF hollow fiber membranes. These might result in interesting potential applications and open new directions toward designing efficient functional NF hollow fibers for water desalination.
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Affiliation(s)
- Cristina Veronica Gherasim
- DWI Leibniz Institute for Interactive Materials Research at RWTH Aachen , Forckenbeckstrasse 50, 52074 Aachen, Germany
- Department of Chemical Process Engineering, RWTH Aachen University , Turmstrasse 46, 52064 Aachen, Germany
| | - Tobias Luelf
- DWI Leibniz Institute for Interactive Materials Research at RWTH Aachen , Forckenbeckstrasse 50, 52074 Aachen, Germany
- Department of Chemical Process Engineering, RWTH Aachen University , Turmstrasse 46, 52064 Aachen, Germany
| | - Hannah Roth
- DWI Leibniz Institute for Interactive Materials Research at RWTH Aachen , Forckenbeckstrasse 50, 52074 Aachen, Germany
- Department of Chemical Process Engineering, RWTH Aachen University , Turmstrasse 46, 52064 Aachen, Germany
| | - Matthias Wessling
- DWI Leibniz Institute for Interactive Materials Research at RWTH Aachen , Forckenbeckstrasse 50, 52074 Aachen, Germany
- Department of Chemical Process Engineering, RWTH Aachen University , Turmstrasse 46, 52064 Aachen, Germany
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23
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Vanzetti L, Pasquardini L, Potrich C, Vaghi V, Battista E, Causa F, Pederzolli C. XPS analysis of genomic DNA adsorbed on PEI-modified surfaces. SURF INTERFACE ANAL 2016. [DOI: 10.1002/sia.5932] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Lia Vanzetti
- Center for Materials and Microsystems; Fondazione Bruno Kessler; MNF-MateC, via Sommarive 18 I-38123 Povo Trento Italy
- Laboratory of Biomolecular Sequence and Structure Analysis for Health; Fondazione Bruno Kessler; via Sommarive 18 I-38123 Povo Trento Italy
| | - L. Pasquardini
- Laboratory of Biomolecular Sequence and Structure Analysis for Health; Fondazione Bruno Kessler; via Sommarive 18 I-38123 Povo Trento Italy
| | - C. Potrich
- Laboratory of Biomolecular Sequence and Structure Analysis for Health; Fondazione Bruno Kessler; via Sommarive 18 I-38123 Povo Trento Italy
- Istituto di Biofisica; CNR - Consiglio Nazionale delle Ricerche; via alla Cascata 56/C, I-38123 Povo Trento Italy
| | - V. Vaghi
- Laboratory of Biomolecular Sequence and Structure Analysis for Health; Fondazione Bruno Kessler; via Sommarive 18 I-38123 Povo Trento Italy
| | - E. Battista
- Center for Advanced Biomaterials for Healthcare@CRIB; Istituto Italiano di Tecnologia (IIT); Largo Barsanti e Matteucci 53, 80125 Naples Italy
| | - F. Causa
- Center for Advanced Biomaterials for Healthcare@CRIB; Istituto Italiano di Tecnologia (IIT); Largo Barsanti e Matteucci 53, 80125 Naples Italy
| | - C. Pederzolli
- Laboratory of Biomolecular Sequence and Structure Analysis for Health; Fondazione Bruno Kessler; via Sommarive 18 I-38123 Povo Trento Italy
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24
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Abstract
This review summarizes recent developments in the field of surfaces functionalized with branched polymers, including the fabrication methods, morphologies, properties and applications.
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Affiliation(s)
- Wei Sun
- Laboratory of Polymer Chemistry
- Department of Polymer Materials
- College of Materials Science and Engineering
- Shanghai University
- Shanghai 200444
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25
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Küchler A, Bleich JN, Sebastian B, Dittrich PS, Walde P. Stable and Simple Immobilization of Proteinase K Inside Glass Tubes and Microfluidic Channels. ACS APPLIED MATERIALS & INTERFACES 2015; 7:25970-80. [PMID: 26536248 DOI: 10.1021/acsami.5b09301] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Engyodontium album proteinase K (proK) is widely used for degrading proteinaceous impurities during the isolation of nucleic acids from biological samples, or in proteomics and prion research. Toward applications of proK in flow reactors, a simple method for the stable immobilization of proK inside glass micropipette tubes was developed. The immobilization of the enzyme was achieved by adsorption of a dendronized polymer-enzyme conjugate from aqueous solution. This conjugate was first synthesized from a polycationic dendronized polymer (denpol) and proK and consisted, on average, of 2000 denpol repeating units and 140 proK molecules, which were attached along the denpol chain via stable bis-aryl hydrazone bonds. Although the immobilization of proK inside the tube was based on nonspecific, noncovalent interactions only, the immobilized proK did not leak from the tube and remained active during prolonged storage at 4 °C and during continuous operation at 25 °C and pH = 7.0. The procedure developed was successfully applied for the immobilization of proK on a glass/PDMS (polydimethylsiloxane) microchip, which is a requirement for applications in the field of proK-based protein analysis with such type of microfluidic devices.
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Affiliation(s)
- Andreas Küchler
- Polymer Chemistry Group, Department of Materials (D-MATL), ETH Zürich , Vladimir-Prelog-Weg 5, 8093 Zürich, Switzerland
| | - Julian N Bleich
- Polymer Chemistry Group, Department of Materials (D-MATL), ETH Zürich , Vladimir-Prelog-Weg 5, 8093 Zürich, Switzerland
| | - Bernhard Sebastian
- Bioanalytics Group, Department of Biosystems Science and Engineering (D-BSSE), ETH Zürich , Vladimir-Prelog-Weg 3, 8093 Zürich, Switzerland
| | - Petra S Dittrich
- Bioanalytics Group, Department of Biosystems Science and Engineering (D-BSSE), ETH Zürich , Vladimir-Prelog-Weg 3, 8093 Zürich, Switzerland
| | - Peter Walde
- Polymer Chemistry Group, Department of Materials (D-MATL), ETH Zürich , Vladimir-Prelog-Weg 5, 8093 Zürich, Switzerland
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26
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Cho TJ, Pettibone JM, Gorham JM, Nguyen TM, MacCuspie RI, Gigault J, Hackley VA. Unexpected Changes in Functionality and Surface Coverage for Au Nanoparticle PEI Conjugates: Implications for Stability and Efficacy in Biological Systems. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:7673-7683. [PMID: 26114747 DOI: 10.1021/acs.langmuir.5b01634] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Cationic polyethylenimine conjugated gold nanoparticles (AuNP-PEI) are a widely studied vector for drug delivery and an effective probe for interrogating NP-cell interactions. However, an inconsistent body of literature currently exists regarding the reproducibility of physicochemical properties, colloidal stability, and efficacy for these species. To address this gap, we systematically examined the preparation, stability, and formation mechanism of PEI conjugates produced from citrate-capped AuNPs. We considered the dependence on relative molar mass, Mr, backbone conformation, and material source. The conjugation mechanism of Au-PEI was probed using attenuated total reflectance FTIR and X-ray photoelectron spectroscopy, revealing distinct fates for citrate when interacting with different PEI species. The differences in residual citrate, PEI properties, and sample preparation resulted in distinct products with differentiated stability. Overall, branched PEI (25 kDa) conjugates exhibited the greatest colloidal stability in all media tested. By contrast, linear PEI (25 kDa) induced agglomeration. Colloidal stability of the products was also observed to correlate with displaced citrate, which supports a glaring knowledge gap that has emerged regarding the role of this commonly used carboxylate species as a "place holder" for conjugation with ligands of broad functionalities. We observed an unexpected and previously unreported conversion of amine functional groups to quaternary ammonium species for 10 kDa branched conjugates. Results suggest that the AuNP surface catalyzes this conversion. The product is known to manifest distinct processes and uptake in biological systems compared to amines and may lead to unintentional toxicological consequences or decreased efficacy as delivery vectors. Overall, comprehensive physicochemical characterization (tandem spectroscopy methods combined with physical measurements) of the conjugation process provides a methodology for elucidating the contributing factors of colloidal stability and chemical functionality that likely influence the previously reported variations in conjugate properties and biological response models.
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Affiliation(s)
- Tae Joon Cho
- Materials Measurement Science Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
| | - John M Pettibone
- Materials Measurement Science Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
| | - Justin M Gorham
- Materials Measurement Science Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
| | - Thao M Nguyen
- Materials Measurement Science Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
| | - Robert I MacCuspie
- Materials Measurement Science Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
| | - Julien Gigault
- Materials Measurement Science Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
| | - Vincent A Hackley
- Materials Measurement Science Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
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27
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Gultekinoglu M, Tunc Sarisozen Y, Erdogdu C, Sagiroglu M, Aksoy EA, Oh YJ, Hinterdorfer P, Ulubayram K. Designing of dynamic polyethyleneimine (PEI) brushes on polyurethane (PU) ureteral stents to prevent infections. Acta Biomater 2015; 21:44-54. [PMID: 25848724 DOI: 10.1016/j.actbio.2015.03.037] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2014] [Revised: 03/20/2015] [Accepted: 03/31/2015] [Indexed: 12/23/2022]
Abstract
Permanent antibacterial coatings have been developed by brush-like polyethyleneimine (PEI) on polyurethane (PU) ureteral stents since bacterial adhesion and biofilm formation with the following encrustation on stent surface limit their long term usage. In order to control or prevent bacterial infections; PEI chains with two different molecular weights (Mn: 1800 or 60,000 Da) were covalently attached on the polyurethane (PU) surface by "grafting to" approach to obtain a brush-like structure. Then, PEI brushes were alkylated with bromohexane to enhance the disruption of bacterial membranes with increasing polycationic character. X-ray Photoelectron and Infrared Spectroscopy investigations confirmed that PEI grafting and alkylation steps were performed successfully. Surface roughness in dry state increased dramatically from 65.8 nm to 277.7 nm and 145.2 nm for short chain PEI and long chain PEI grafted samples, respectively. Both low and high molecular weight PEI grafts exhibited a brush-like structure and potent antibacterial activity by lowering the adherence of Klebsiella pneumonia, Escherichia coli and Proteus mirabilis species up to two orders of magnitude without any cytotoxic effect on L929 and G/G cells. Thus, permanent bactericidal activity was achieved by the contact-active strategy of dynamic PEI brush-like structures on polyurethane ureteral stent.
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28
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Patil RR, Turgman-Cohen S, Šrogl J, Kiserow D, Genzer J. On-demand degrafting and the study of molecular weight and grafting density of poly(methyl methacrylate) brushes on flat silica substrates. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:2372-2381. [PMID: 25654273 DOI: 10.1021/la5044766] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We report on degrafting of surface-anchored poly(methyl methacrylate) (PMMA) brushes from flat silica-based substrates using tetrabutylammonium fluoride (TBAF) and determining their molecular weight distribution (MWD) using size exclusion chromatography (SEC). The grafted PMMA layer was synthesized using surface-initiated atom transfer radical polymerization (SI-ATRP) of MMA for polymerization times ranging from 6 to 24 h. X-ray photoelectron spectroscopy, ellipsometry, and time-of-flight secondary ion mass spectrometry were employed in tandem to characterize the degrafting process. The SEC eluograms were fit to various polymer distributions, namely Zimm-Schulz, ATRP in continuous stirred tank reactor, Wesslau, Schulz-Flory, and Smith et al. The ATRP model gives the best fit to the experimental data. The dry PMMA brush thickness and the number-average molecular weight (obtained from the MWD) suggest that the grafting density of the PMMA grafts is independent of polymerization time, indicating well-controlled/living growth of MMA. The observed polydispersity index (PDI) was higher than that generally observed in bulk grown polymers under similar conditions, indicating an effect due to chain confinement and crowding. We detect small but noticeable dependence of the polymer brush grafting density on the inhibitor/catalyst ratio. Higher inhibitor/catalyst ratio offers better control with lower early terminations, which results in a small increase in the apparent grafting density of the chains.
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Affiliation(s)
- Rohan R Patil
- Department of Chemical and Biomolecular Engineering, North Carolina State University , Raleigh, North Carolina 27695-7905, United States
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29
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Patil RR, Turgman-Cohen S, Šrogl J, Kiserow D, Genzer J. Direct Measurement of Molecular Weight and Grafting Density by Controlled and Quantitative Degrafting of Surface-Anchored Poly(methyl methacrylate). ACS Macro Lett 2015; 4:251-254. [PMID: 35596417 DOI: 10.1021/mz5007188] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We report on quantitative determination of the molecular weight distribution (MWD) and grafting density (σP) of polymer assemblies grown by controlled radical polymerization from flat substrates as a function of polymerization time and the ratio between the inhibitor and catalyst species. Specifically, we grow poly(methyl methacrylate) (PMMA) brushes on flat silica-based surfaces by surface-initiated atom transfer radical polymerization (SI-ATRP), cleave the PMMA grafts quantitatively using tetrabutyl ammonium fluoride (TBAF), and analyze their MWD by size exclusion chromatography equipped with a high-sensitivity differential refractive index detector. The polymer growth and degrafting processes are followed by ellipsometry, X-ray photoelectron spectroscopy, and time-of-flight secondary ion mass spectrometry. The σP is independent of polymerization time and increases with increasing SI-ATRP inhibitor/catalyst ratio. Specifically, σP increases from 0.48 ± 0.06 to 0.58 ± 0.06 chains/nm2 as the inhibitor/catalyst molar ratio increases from 0 to 0.015, respectively, providing evidence that high inhibitor/catalyst ratio offers better control of the SI-ATRP reaction, by lowering number of terminations, and leading to denser PMMA brush assemblies.
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Affiliation(s)
- Rohan R. Patil
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695-7905, United States
| | - Salomon Turgman-Cohen
- Department of Chemical Engineering, Kettering University, Flint, Michigan 48504, United States
| | - Jiří Šrogl
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695-7905, United States
| | - Douglas Kiserow
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695-7905, United States
- US Army Research Office, Research Triangle Park, North Carolina 27709-2211, United States
| | - Jan Genzer
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695-7905, United States
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Abstract
The recent research progress in biological and biomedical applications of hyperbranched polymers has been summarized in this review.
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Affiliation(s)
- Dali Wang
- School of Chemistry and Chemical Engineering
- State Key Laboratory of Metal Matrix Composites
- Shanghai Jiao Tong University
- 200240 Shanghai
- P. R. China
| | - Tianyu Zhao
- Charles Institute of Dermatology
- School of Medicine and Medical Science
- University College Dublin
- Dublin 4
- Ireland
| | - Xinyuan Zhu
- School of Chemistry and Chemical Engineering
- State Key Laboratory of Metal Matrix Composites
- Shanghai Jiao Tong University
- 200240 Shanghai
- P. R. China
| | - Deyue Yan
- School of Chemistry and Chemical Engineering
- State Key Laboratory of Metal Matrix Composites
- Shanghai Jiao Tong University
- 200240 Shanghai
- P. R. China
| | - Wenxin Wang
- Charles Institute of Dermatology
- School of Medicine and Medical Science
- University College Dublin
- Dublin 4
- Ireland
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Tsoufis T, Katsaros F, Sideratou Z, Kooi BJ, Karakassides MA, Siozios A. Intercalation Study of Low-Molecular-Weight Hyperbranched Polyethyleneimine into Graphite Oxide. Chemistry 2014; 20:8129-37. [DOI: 10.1002/chem.201304599] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2013] [Revised: 03/11/2014] [Indexed: 01/08/2023]
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Zhang R, Li Q, Gao Y, Li J, Huang Y, Song C, Zhou W, Ma G, Su Z. Hydrophilic modification gigaporous resins with poly(ethylenimine) for high-throughput proteins ion-exchange chromatography. J Chromatogr A 2014; 1343:109-18. [DOI: 10.1016/j.chroma.2014.03.064] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2013] [Revised: 03/11/2014] [Accepted: 03/22/2014] [Indexed: 01/22/2023]
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Hierarchical Thin Film Architectures for Enhanced Sensor Performance: Liquid Crystal-Mediated Electrochemical Synthesis of Nanostructured Imprinted Polymer Films for the Selective Recognition of Bupivacaine. BIOSENSORS-BASEL 2014; 4:90-110. [PMID: 25587412 PMCID: PMC4264373 DOI: 10.3390/bios4020090] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/11/2014] [Revised: 03/15/2014] [Accepted: 03/28/2014] [Indexed: 01/24/2023]
Abstract
Nanostructured bupivacaine-selective molecularly imprinted 3-aminophenylboronic acid-p-phenylenediamine co-polymer (MIP) films have been prepared on gold-coated quartz (Au/quartz) resonators by electrochemical synthesis under cyclic voltammetric conditions in a liquid crystalline (LC) medium (triton X-100/water). Films prepared in water and in the absence of template were used for control studies. Infrared spectroscopic studies demonstrated comparable chemical compositions for LC and control polymer films. SEM studies revealed that the topologies of the molecularly imprinted polymer films prepared in the LC medium (LC-MIP) exhibit discernible 40 nm thick nano-fiber structures, quite unlike the polymers prepared in the absence of the LC-phase. The sensitivity of the LC-MIP in a quartz crystal microbalance (QCM) sensor platform was 67.6 ± 4.9 Hz/mM under flow injection analysis (FIA) conditions, which was ≈250% higher than for the sensor prepared using the aqueous medium. Detection was possible at 100 nM (30 ng/mL), and discrimination of bupivacaine from closely related structural analogs was readily achieved as reflected in the corresponding stability constants of the MIP-analyte complexes. The facile fabrication and significant enhancement in sensor sensitivity together highlight the potential of this LC-based imprinting strategy for fabrication of polymeric materials with hierarchical architectures, in particular for use in surface-dependent application areas, e.g., biomaterials or sensing.
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Melnik E, Muellner P, Bethge O, Bertagnolli E, Hainberger R, Laemmerhofer M. Streptavidin binding as a model to characterize thiol-ene chemistry-based polyamine surfaces for reversible photonic protein biosensing. Chem Commun (Camb) 2014; 50:2424-7. [PMID: 24448367 DOI: 10.1039/c3cc48640k] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Biotin- and iminobiotin-bonded surfaces obtained by thiol-ene chemistry and subsequent modification with polyamines were characterized with respect to streptavidin-binding capacity and reversibility for photonic biosensing using X-ray photoelectron spectroscopy and Mach-Zehnder-interferometric sensors. The streptavidin-iminobiotin system was exploited for reversible multilayer deposition and determination of affinity constants on each layer.
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Affiliation(s)
- Eva Melnik
- AIT Austrian Institute of Technology GmbH, Health & Environment Department, Molecular Diagnostics, 1220 Vienna, Austria.
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