Double molecular imprinting – a new sensor concept for improving selectivity in the detection of polycyclic aromatic hydrocarbons (PAHs) in water

Dickert, Franz L.; Achatz, Paul; Halikias, Konstantin

doi:10.1007/s002160100955

Cited by 77 publications

(41 citation statements)

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“…[457][458][459][460] The simultaneous imprinting of two different templates in the same material has been reported. 411,461,462 In some cases a template analogue has been used 463,464 and an epitope approach for the imprinting of polypeptides has been described. [465][466][467] Approaches to the imprinting of oligonucleotides in aqueous solvents have been reported.…”

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confidence: 99%

Molecular imprinting science and technology: a survey of the literature for the years up to and including 2003

Andersson²,

et al. 2006

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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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confidence: 99%

Molecular imprinting science and technology: a survey of the literature for the years up to and including 2003

Andersson²,

et al. 2006

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“…The sensitivity patterns obtained for different templates lead to the conclusion that the best re-inclusion can be observed for molecules being slightly larger than the template. To further investigate this phenomenon, mixtures of templates were tested [10]. Figure 6 shows a resulting set of data, where both the ratio between the two template molecules as well as the polymerization temperature is varied.…”

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confidence: 99%

Chemical Sensors – from Molecules, Complex Mixtures to Cells – Supramolecular Imprinting Strategies

Dickert

Lieberzeit

Hayden

et al. 2003

Sensors

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Methods of modern chemistry are a powerful tool in generating functional materials suitable as chemically sensitive layers to be combined with a variety of transducer principles. Molecular pits in polymers are formed by molecular imprinting, by suitable double-imprinting e.g. PAHs can be detected down to the sub-µg/l level. The resulting selectivity patterns depend both on the polymerization temperature and the template/mononomer composition. Organic contaminants in water can be either directly assessed in liquid phase or separated from the matrix by a porous Teflon membrane. Thus the detection limits can be reduced to the ppm-level due to the a much lower noise level in gaseous phase. Even complex processes such as engine oil degradation can be followed by suitably imprinted polymers. Pits on the nm-to µm scale are reached by surface templating polymers with microorganisms. The resulting layers show reversible, antibody-like interactions and thus are optimal sensor layers. The successful on-line detection of tobacco mosaic viruses (TMV) can be achieved by these surface imprinted layers.

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“…The first example was reported by Sreenivasan and Sivakumar (Sreenivasan et al, 1999), who imprinted both salicylic acid and hydrocortisone in the same MIP formulated with hydroxyethylmethacrylate (HEMA) as the functional monomer and ethylene glycol dimethacrylate (EGDMA) as the crosslinker. Dickert et al (2001) described the idea of double "molecular imprinting" using two templates that were simultaneously imprinted in a crosslinked polyurethane thin film.…”

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confidence: 99%

Fabrication and evaluation of multiple template cross-linked molecularly imprinted electro spun nanofibers for selective extraction of nickel and vanadyl tetraphenylporphyrin from organic media

Awokoya¹,

Tshentu²,

Torto³

2015

Afr. J. Pure Appl. Chem.

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A nickel vanadyl molecularly imprinted nanofiber (NVMIN) was developed by the electrospinning technique, employing polyethylene terephthalate (PET) and linear polyethylenimine (L-PEI) as the matrix polymers, nickel tetraphenylporphyrin (NTPP) and vanadyl tetraphenylporphyrin (VTPP) as the mixed-template molecules. The fabricated NVMIN was evaluated as a sorbent for the removal of NTPP and VTPP from organic media. The effects of trifluoroacetic acid (TFA), dichloromethane (DCM), dimethyl sulphoxide (DMSO), pentane (PEN) on electro-spinnability of the PET/L-PEI solutions and the morphological appearance of the PET/L-PEI fibers were investigated qualitatively by means of a scanning electron microscope (SEM). Electrospinning of 14 to 30% w/v PET/L-PEI solutions in TFA produced beaded and smooth fibers, depending on the concentration range. The addition of DCM and PEN as modifiers helped improve the electrospinnability, with PEN being the best, while the addition of DMSO made the solutions not spinnable. The results indicated that the NVMIN showed higher affinity (99% higher) for NTPP than the non-imprinted nanofiber (NIN) indicating that the NVMIN contained a lot of specific binding sites. It was determined that the NVMIN exhibited the same selectivity specialism for both NTPP and VTPP. However, the interaction strength was strongly dependant on the type of solvent, where the strongest interaction was achieved in chloroform. In addition, the thermodynamic parameters calculated from the adsorption data suggested that the adsorption of NTPP onto NVMIN was a spontaneous and exothermic process.

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Double molecular imprinting – a new sensor concept for improving selectivity in the detection of polycyclic aromatic hydrocarbons (PAHs) in water

Cited by 77 publications

References 0 publications

Molecular imprinting science and technology: a survey of the literature for the years up to and including 2003

Molecular imprinting science and technology: a survey of the literature for the years up to and including 2003

Chemical Sensors – from Molecules, Complex Mixtures to Cells – Supramolecular Imprinting Strategies

Fabrication and evaluation of multiple template cross-linked molecularly imprinted electro spun nanofibers for selective extraction of nickel and vanadyl tetraphenylporphyrin from organic media

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