Theophylline molecular imprint composite membranes prepared from poly(vinylidene fluoride) (PVDF) substrate

Wang, Jingyu; Liu, Fu; Xu, Zheng; Li, K.

doi:10.1016/j.ces.2010.02.024

Cited by 23 publications

(11 citation statements)

References 22 publications

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“…Likewise, the molecular interactions between the AA-d 4 1 and 1.1.3), and by Wang et al using a similar FTIR method and the same solvent [47]; on the contrary, the K 11 obtained for the CAF:AA-d 4 system is 20 times smaller than the one estimated by Wang et al…”

Section: Binding Constantscontrasting

confidence: 55%

Selective removal of ATP degradation products from food matrices I: Design and characterization of a dummy molecularly imprinted specific sorbent for hypoxanthine

Latorre

Pérez

Fernández

et al. 2015

Reactive and Functional Polymers

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Section: Binding Constantscontrasting

confidence: 55%

Selective removal of ATP degradation products from food matrices I: Design and characterization of a dummy molecularly imprinted specific sorbent for hypoxanthine

Latorre

Pérez

Fernández

et al. 2015

Reactive and Functional Polymers

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“…As earlier presented in Table , 64% and 77% of the TAU added in the feed formulation of chloroform and acetonitrile‐porogenated MIPs, respectively, were incorporated in the monolithic MIPs resulting in a 1:1 stoichiometric T:FM ratio, but only rebound 2.8% (4.1 ± 0.2 μmol/g) and 2.3% (3.6 ± 0.1 μmol/g) of it, respectively. These results suggest that most of the incorporated template was not converted to high fidelity imprints in bulk imprinting, with some possibly destroyed during grinding of the monoliths . Conversely, their respective NIPs also recorded comparable TAU binding of 2.4 ± 0.1 μmol/g (BP‐1:1‐C) and 1.8 ± 0.2 μmol/g (BP‐1:1‐A) giving imprinting factors of 1.7 and 2.0, respectively.…”

Section: Resultsmentioning

confidence: 93%

Assessment of the imprinting efficiency of an imide with a “stoichiometric” pyridine‐based functional monomer in precipitation polymerisation

Lim

Hall

Lettieri

et al. 2017

J of Molecular Recognition

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The efficiency of the stoichiometric non-covalent imprinting of the imide 2,3,5-tri-O-acetyluridine (TAU) with 2,6-bis(acrylamido)pyridine (BAAPy) as functional monomer due to their strong donor-acceptor-donor/acceptor-donor-acceptor (DAD/ADA) hydrogen bond array interaction has been evaluated by bulk imprinting. This study is the first to investigate the imprinting and template rebinding efficiencies of the TAU/BAAPy molecularly imprinted polymeric (MIP) system prepared by precipitation polymerisation. We found that the stoichiometric 1:1 T:FM ratio has not been maintained in precipitation polymerisation and an optimal TAU:BAAPy ratio of 1:2.5 was obtained in acetonitrile without agitation affording an affinity constant (1.7 × 10 M ) and a binding capacity (3.69 μmol/g) higher than its bulk counterpart. Molecular modelling, NMR studies, and selectivity assays against analogues uridine and 2,3,5-tri-O-acetyl cytidine (TAC) indicate that, aside from the DAD/ADA hydrogen bond interaction, BAAPy also interacts with the acetyl groups of TAU. Template incorporation and rebinding in precipitation MIPs are favoured by a moderate initiator concentration, ie, initiator:total monomer (I:TM) ratio of 1:131, while low I:TM ratio (ie, 1:200) drastically reduced template incorporation and binding capacity. Vigorous agitation by stirring showed higher template incorporation but significantly lower template rebinding compared to that prepared without agitation. While the imprinting efficiencies for the best performing bulk and precipitation TAU MIPs generated in this study were moderate, 41% and 60%, respectively, their rebinding capacities were only between 3 and 4% of the incorporated template. We also present quantitative nuclear magnetic resonance spectroscopy as an efficient method for MIP characterisation.

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“…Actually, the non-covalent imprinting method is the most popular owing to its easy operation mode and the wide range of functional monomers, which complement every desired template molecule. In addition, this kind of interaction is the basis of the molecular recognition, which take place in living systems [14,26,62,63]. A weakness of this approach is that the non-covalent interactions are less strong than covalent bonds and are ruled by an equilibrium process.…”

Section: The Concept Of Molecular Imprintingmentioning

confidence: 99%

“…The imprinting technique was also applied by the scientists for the preparation of molecularly imprinted membranes (MIMs) [21][22][23][24][25][26] that can separate and purify a target molecule or selectively recognize an analyte from a mixture of similar compounds. Thanks to their high selective properties, imprinted membranes have potential applications in numerous fields [27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Emerging Tools for Recognition and/or Removal of Dyes from Polluted Sites: Molecularly Imprinted Membranes

Algieri

Drioli

Ahmed

et al. 2014

J. Memb. Separ. Tech.

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Dyes are used in different industries as textile, paper, food processing, cosmetic, leather tanning, rubber, printing and so on. These chemical substances have negative effect on the quality of the water and food, causing human diseases and environmental problems. In view of these aspects, colorant have attracted the interest of the scientists in developing efficient routes for their detection and/or removal from the polluted sites. Although traditional technologies used for removal of dyes are efficient, there is the necessity of developing innovative systems both more cheaply and of easy performance. In this scenario, the integration of the membrane science with the molecular imprinting technology is an alternative way that present many advantages such us the removal or detection of a specific dye or a class of dyes and cost reduction processes. In fact, exploiting the benefits of these two technologies it is possible to develop molecularly imprinted membranes able to recognize a dye of interest in specific mode. This potential is promising for combatting the illegal use of dyes in food, drinks and aquaculture as well as for their removal. The main positive aspects of the imprinted membranes are their chemical stability, reusability, as well as the resistance to the pH and temperature. In addition, their preparation requires short operation time and it is not expensive. All these properties have an encouraging impact in dealing with the problem of dyes contamination. This short review offers a description of the concept of molecular imprinting, starting from the approach of the synthesis of imprinted polymers until the description of the preparation of imprinted membranes. The application of imprinted polymers and membranes for the detection and/or removal of dyes from polluted sites will be also discussed.

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Theophylline molecular imprint composite membranes prepared from poly(vinylidene fluoride) (PVDF) substrate

Cited by 23 publications

References 22 publications

Selective removal of ATP degradation products from food matrices I: Design and characterization of a dummy molecularly imprinted specific sorbent for hypoxanthine

Selective removal of ATP degradation products from food matrices I: Design and characterization of a dummy molecularly imprinted specific sorbent for hypoxanthine

Assessment of the imprinting efficiency of an imide with a “stoichiometric” pyridine‐based functional monomer in precipitation polymerisation

Emerging Tools for Recognition and/or Removal of Dyes from Polluted Sites: Molecularly Imprinted Membranes

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