Surface modification: PEG / Dextran encapsulation of SPIONs

Pansailom, Nichakorn; Rattanamai, Songsak; Leepheng, Piyawan; Rattanawarinchai, Prapakorn; Chattrairat, Kunanon; Phromyothin, Darinee

doi:10.1016/j.matpr.2017.06.131

Cited by 6 publications

(3 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…With the increasing sensitivity of MIPs, superparamagnetic iron oxide nanoparticles (SPIONs) can enhance the current signal in electrochemical analysis, called magnetic molecularly imprinted polymers (MMIPs). [20][21][22][23][24] The SPIONs, especially magnetite Fe 3 O 4, are iron oxide nanoparticles. SPIONs dispersed in the matrix polymer of MMIPs can decrease electron scattering and resistance in matrix polymer due to alignment of the magnetic moment within the external magnetism of SPIONs.…”

Section: Introductionmentioning

confidence: 99%

Selective electrochemical determination based on magnetic molecularly imprinted polymers for albumin detection

Leepheng

Limthin

Onlaor

et al. 2022

Jpn. J. Appl. Phys.

Self Cite

View full text Add to dashboard Cite

Egg allergy is one of the most allergies in humans. The allergenic egg protein as ovalbumin is found the most abundant protein in egg white. The selective electrode in electrochemical analysis for egg’s white albumin was developed based on magnetic molecularly imprinted polymers (albumin-MMIPs) modified on a screen-printed electrode. The surface modification was applied using methyl methacrylate polymer to create surface specificity for albumin protein. The surface-modified, average pore size and electrochemical analysis were characterized by field emission scanning electron microscope (FE-SEM), Brunauer-Emmett-Teller (BET), and Potentiostat. The albumin-MMIPs electrode was selectivity with albumin, comparison with gluten, glycine, casein, and glucose. The modified electrodes present selectivity as 1.13x104 μAg-1mL and limit of detection as 0.18 mg/ml. the electrode can be applied to albumin protein detection in solution form in food industries.

show abstract

Section: Introductionmentioning

confidence: 99%

Selective electrochemical determination based on magnetic molecularly imprinted polymers for albumin detection

Leepheng

Limthin

Onlaor

et al. 2022

Jpn. J. Appl. Phys.

Self Cite

View full text Add to dashboard Cite

show abstract

“…It reduces electron scattering, reducing electrical resistance in matrix polymer, and quantum mechanical magnetoresistance, which was mentioned in anisotropic magnetoresistance (AMR). [16][17][18][19][20] The MMIP was immobilized on the screen-printed electrode (SPE) for BPA detection in the electrochemical analysis. The modified electrode required high selectivity, high sensitivity, high accuracy and a low detection limit.…”

Section: Introductionmentioning

confidence: 99%

Modification of selective electrode based on magnetic molecularly imprinted polymer for bisphenol A determination

Leepheng¹,

Limthin²,

Onlaor³

et al. 2021

Jpn. J. Appl. Phys.

Self Cite

View full text Add to dashboard Cite

Selective electrodes were modified by using the magnetic molecularly imprinted polymer (MMIP) technique on a screen-printed electrode (SPE) to detect bisphenol A (BPA). Superparamagnetic iron oxide nanoparticles (SPIONs) greatly enhance electrochemical signals due to their superparamagnetic properties. The SPIONs are non-toxic, biocompatible and highly stable. The SPIONs, especially magnetite (Fe3O4), were synthesized from ferrous chloride and ferric chloride using a chemical co-precipitation method. The crystalline structure of the synthesized SPIONs was obtained by X-ray diffractometer, representing cubic inverse spinel structure like magnetite. The synthesized SPIONs had particle sizes of 9.87 ± 2.67 nm, which was confirmed by transmission electron microscope. The magnetic property was measured by a vibrating sample magnetometer, which presented the saturated magnetization, magnetic remanence value and coercivity as 48.76 emu g−1, 0.497 emu g−1 and 6.265 Oe, respectively. The surfaces of modified electrodes were characterized by a scanning electron microscope, which revealed BPA template cavities on the electrode surface. The electrochemical properties were studied by cyclic voltammetry and amperometry. The bisphenol A-magnetic molecularly imprinted polymer electrode (BPA-MMIP/SPE) has a sensitivity of 2.909 with a limit of detection of 2.053 × 10−8 M. The concentration range for BPA detection is 2.5 × 10−8 to 1.00 × 10−4 M, which can be applied to detection in a real sample.

show abstract

“…Cobalt ferrites have a slower magnetic moment relaxation when compared to magnetite. Moreover, when such ferrites are altered by different biocompatible surface modifiers such as pullulan [ 3 ], chitosan [ 4 , 31 , 32 , 33 ], polyethylene glycol [ 2 , 4 , 34 , 35 , 36 ], dextran [ 36 ], etc., then their biocompatibility is further enhanced.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Characterization and Magnetic Hyperthermia of Monodispersed Cobalt Ferrite Nanoparticles for Cancer Therapeutics

et al. 2020

View full text Add to dashboard Cite

Magnetic nanoparticles such as cobalt ferrite are investigated under clinical hyperthermia conditions for the treatment of cancer. Cobalt ferrite nanoparticles (CFNPs) synthesized by the thermal decomposition method, using nonionic surfactant Triton-X100, possess hydrophilic polyethylene oxide chains acting as reducing agents for the cobalt and iron precursors. The monodispersed nanoparticles were of 10 nm size, as confirmed by high-resolution transmission electron microscopy (HR-TEM). The X-ray diffraction patterns of CFNPs prove the existence of cubic spinel cobalt ferrites. Cs-corrected scanning transmission electron microscopy–high-angle annular dark-field imaging (STEM–HAADF) of CFNPs confirmed their multi-twinned crystallinity due to the presence of atomic columns and defects in the nanostructure. Magnetic measurements proved that the CFNPs possess reduced remnant magnetization (MR/MS) (0.86), which justifies cubic anisotropy in the system. Microwave-based hyperthermia studies performed at 2.45 GHz under clinical conditions in physiological saline increased the temperature of the CFNP samples due to the transformation of radiation energy to heat. The specific absorption rate of CFNPs in physiological saline was 68.28 W/g. Furthermore, when triple-negative breast cancer cells (TNBC) in the presence of increasing CFNP concentration (5 mg/mL to 40 mg/mL) were exposed to microwaves, the cell cytotoxicity was enhanced compared to CFNPs alone.

show abstract

Surface modification: PEG / Dextran encapsulation of SPIONs

Cited by 6 publications

References 18 publications

Selective electrochemical determination based on magnetic molecularly imprinted polymers for albumin detection

Selective electrochemical determination based on magnetic molecularly imprinted polymers for albumin detection

Modification of selective electrode based on magnetic molecularly imprinted polymer for bisphenol A determination

Synthesis, Characterization and Magnetic Hyperthermia of Monodispersed Cobalt Ferrite Nanoparticles for Cancer Therapeutics

Contact Info

Product

Resources

About