Fabrication and evaluation of protein imprinted polymer based on magnetic halloysite nanotubes

RSC Advances ◽  
2015 ◽  
Vol 5 (81) ◽  
pp. 66147-66154 ◽  
Author(s):  
Xiaohong Zhu ◽  
Hui Li ◽  
Hui Zhou ◽  
Shian Zhong
Keyword(s):  
Halloysite Nanotubes ◽  
Selective Separation ◽  
Surface Imprinting ◽  
Imprinted Polymer ◽  
Surface Imprinting Technology ◽  
Template Protein ◽  
Novel Protein

A novel protein imprinted polymer, which combined the surface imprinting technology and magnetic halloysite nanotubes (MHNTs), was prepared for selective separation of a template protein.

scholarly journals Improving Surface Imprinting Effect by Reducing Nonspecific Adsorption on Non-imprinted Polymer Films for 2,4-D Herbicide Sensors

Chemosensors ◽  
2021 ◽  
Vol 9 (3) ◽  
pp. 43
Author(s):  
Jin Chul Yang ◽  
Suck Won Hong ◽  
Jinyoung Park
Keyword(s):  
Morphological Changes ◽  
Unit Weight ◽  
Dichlorophenoxyacetic Acid ◽  
Surface Imprinting ◽  
Imprinted Polymer ◽  
Nonspecific Adsorption ◽  
Chemical Surface ◽  
Silane Modification ◽  
Silanized Silica ◽  
2,4 Dichlorophenoxyacetic Acid

Surface imprinting used for template recognition in nanocavities can be controlled and improved by surface morphological changes. Generally, the lithographic technique is used for surface patterning concerning sensing signal amplification in molecularly imprinted polymer (MIP) thin films. In this paper, we describe the effects of silanized silica molds on sensing the properties of MIP films. Porous imprinted poly(MAA–co–EGDMA) films were lithographically fabricated using silanized or non-treated normal silica replica molds to detect 2,4-dichlorophenoxyacetic acid (2,4-D) herbicide as the standard template. The silanized mold MIP film (st-MIP) (Δf = −1021 Hz) exhibited a better sensing response than the non-treated normal MIP (n-MIP) (Δf = −978 Hz) because the imprinting effects, which occurred via functional groups on the silica surface, could be reduced through silane modification. Particularly, two non-imprinted (NIP) films (st-NIP and n-NIP) exhibited significantly different sensing responses. The st-NIP (Δfst-NIP = −332 Hz) films exhibited lower Δf values than the n-NIP film (Δfn-NIP = −610 Hz) owing to the remarkably reduced functionality against nonspecific adsorption. This phenomenon led to different imprinting factor (IF) values for the two MIP films (IFst-MIP = 3.38 and IFn-MIP = 1.86), which was calculated from the adsorbed 2,4-D mass per poly(MAA–co–EGDMA) unit weight (i.e., QMIP/QNIP). Moreover, it was found that the st-MIP film had better selectivity than the n-MIP film based on the sensing response of analogous herbicide solutions. As a result, it was revealed that the patterned molds’ chemical surface modification, which controls the surface functionality of imprinted films during photopolymerization, plays a role in fabricating enhanced sensing properties in patterned MIP films.

Magnetic Zn (II) ion-imprinted polymer prepared by the surface imprinting technique and its adsorption properties

2015 ◽  
Vol 36 (21) ◽  
pp. 2702-2711 ◽  
Author(s):  
Hui-xin Zhang ◽  
Qian Dou ◽  
Xiu-hong Jin ◽  
Jie Zhang ◽  
Ting-ru Yang ◽  
...  
Keyword(s):  
Adsorption Properties ◽  
Ion Imprinted Polymer ◽  
Surface Imprinting ◽  
Imprinted Polymer ◽  
Surface Imprinting Technique ◽  
Ion Imprinted

scholarly journals Novel ionic surface imprinting technology: design and application for selectively recognizing heavy metal ions

RSC Advances ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 2431-2440 ◽  
Author(s):  
Fu-Qiang An ◽  
Hu-Fei Li ◽  
Xu-Dong Guo ◽  
Bao-Jiao Gao ◽  
Tuo-Ping Hu ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Adsorption Capacity ◽  
Chemical Stability ◽  
Heavy Metal Ions ◽  
Selectivity Coefficient ◽  
Surface Imprinting ◽  
Technology Design ◽  
Surface Imprinting Technology ◽  
Design And Application

SIPs have good chemical stability and reusability. They could be reused without a significant reduction in adsorption capacity and selectivity coefficient.

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