Synthesis, characterization and electrochemical behavior of ferrocene-containing highly branched polyurethane and its application in biosensing

Xiao, Fang; Gu, Muqing; Liang, Yong; Dong, Meng‐Jie; Zhao, Zhi-Peng; Zhi, Dingwei

doi:10.1016/j.jorganchem.2014.08.016

Cited by 9 publications

(6 citation statements)

References 42 publications

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“…The spectrum for urea‐urethane dendrimer associated on MWNTs is shown in Fig. 1(e), in which two representative bands are observed at 1616 and 1560 cm −1 corresponding to urethane and urea functional groups, respectively 26 . FT‐IR spectrum for PAMAM functionalized MWNT is shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

“…Synthesis of dendrimer urea‐urethane carbon nanotubes was carried out following the procedure reported by Xiao, with some modifications 26 . About 500 mg of O‐MWNTs were dispersed in 50 mL of N, N‐ dimethylformamide (DMF) sonicated by 15 min, and the dispersion was cooled to 5 °C in an ice bath.…”

Section: Methodsmentioning

confidence: 99%

“…25 Poly(urea-co-urethane) carbon nanotubes Synthesis of dendrimer urea-urethane carbon nanotubes was carried out following the procedure reported by Xiao, with some modifications. 26 About 500 mg of O-MWNTs were dispersed in 50 mL of N, N-dimethylformamide (DMF) sonicated by 15 min, and the dispersion was cooled to 5 °C in an ice bath. 3.6 g of hexamethylene diisocyanate (HDI) (0.2 mol) was added in 10 mL DMF and transferred to a flask equipped with a mechanical stirrer containing the dispersed O-MWNTs; the temperature was steadily increased to 60 °C over the course of 3 h. The reaction mixture was cooled again to 5 °C using an bath ice and then diethanolamine (0.2 mol L −1 ) was added dropwise into the mixture over a period of 60 min.…”

Section: Functionalization Of Carbon Nanotubesmentioning

confidence: 99%

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Influence of carbon nanotube functionalization on the physical properties of PCL diol/chitosan blends

Antolín-Cerón¹,

Gonzalez‐Jauregui²,

Astudillo-Sánchez³

et al. 2023

J of Chemical Tech & Biotech

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BACKGROUND Chitosan‐poly(ε)caprolactone diol (PCL) blends were studied for food packaging film applications. The mechanical and thermal properties of blend films can be regulated with different amounts of PCL and the addition of a nanofiller could reinforce specific domains in the blend to generate nanocomposites with desirable properties for food packaging. This is evidence of the selective insertion of functionalized carbon nanotubes in either PCL or chitosan domains, depending on the nature of chemical groups and the structure over the surface nanofiller. RESULTS Multiwalled carbon nanotubes (MWNTs) were functionalized with four different dendritic molecules and were tested as nanofillers to reinforce biodegradable films made from 70 to 30, 80 to 20, and 90 to 10 Chitosan‐PCL blends in an effort to explore their effects on the barrier and mechanical properties of the yielded nanocomposites. PCL was obtained by biocatalysis from ɛ‐caprolactone and diethylene glycol and then blended with commercial chitosan. Blends were prepared from a solution of chitosan in acetic acid (2% wt/wt), adding PCL diol in chloroform dropwise under stirring. The MWNTs were modified with several functional groups (tannic acid via no‐covalent functionalization, poly(citric acid), poly(urea‐urethane), and poly(amino‐amido) dendrimer). Nanocomposites were obtained by adding in situ 0.5 wt/wt functionalized MWNTs during the preparation of blends. The structural interactions, morphological, and mechanical features of MWNTs/Blend nanocomposites were studied by Fourier‐transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), scanning electron microscope (SEM), field emission scanning electron microscopy (FE‐SEM), and strain–stress testing. CONCLUSIONS Preferential interactions between nanofiller and matrix strongly depend on the nature of the nanofiller and the amount of hydrogen bonding species. It was possible to reinforce a particular domain in the blend to generate nanocomposites with desirable/tunable properties by using complementary chemical groups onto MWNTs surface. © 2023 Society of Chemical Industry (SCI).

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Functionalization Of Carbon Nanotubesmentioning

confidence: 99%

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Influence of carbon nanotube functionalization on the physical properties of PCL diol/chitosan blends

Antolín-Cerón¹,

Gonzalez‐Jauregui²,

Astudillo-Sánchez³

et al. 2023

J of Chemical Tech & Biotech

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“…They found that the supramolecular recognition between the hyper-branched polymer and glucose or ATP anion (adenosine-5 0 triphosphate, ATP 2À ) changed the electron transfer during the redox process of ferrocene, making it a promising candidate for biosensing. 249,250 To avoid the leeching of the mediator from the electrode and to get better sensitivity and linearity, Singh et al designed a copolymer through the direct electrochemical polymerization of pyrrole and ferrocenecarboxylate modified pyrrole on indium-tin-oxide (ITO) substrate. By incorporating glucose oxidase into the copolymer film, this film showed fast detection of glucose within 3 s and with linearity up to 16.8 mM.…”

Section: Metal-containing Polymers As Biosensorsmentioning

confidence: 99%

Metal-containing and related polymers for biomedical applications

et al. 2016

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A survey of the most recent progress in the biomedical applications of metal-containing polymers is given. Due to the unique optical, electrochemical, and magnetic properties, at least 30 different metal elements, most of them transition metals, are introduced into polymeric frameworks for interactions with biology-relevant substrates via various means. Inspired by the advance of metal-containing small molecular drugs and promoted by the great progess in polymer chemistry, metal-containing polymers have gained momentum during recent decades. According to their different applications, this review summarizes the following biomedical applications: 1) metal-containing polymers as drug delivery vehicles; 2) metal-containing polymeric drugs and biocides, including antimicrobial and antiviral agents, anticancer drugs, photodynamic therapy agents, radiotherapy and biocide; 3) metal-containing polymers as biosensors, and 4) metal-containing polymers in bioimaging.

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“…The principle of these biosensors was mainly based on the monitoring of oxygen consumption at −0.7 V ( vs. Ag/ACl) [ 10 – 14 , 18 ]. As an alternative to first generation enzymatic biosensors the mediated biosensors have several advantages such as less susceptibility to interfering substances and less dependency on oxygen concentration during measurements [ 19 ]. Mediators can also increase current densities for substrate oxidation and decrease the operating potential.…”

Section: Introductionmentioning

confidence: 99%

Ferrocene-Functionalized 4-(2,5-Di(thiophen-2-yl)-1H-pyrrol-1-yl)aniline: A Novel Design in Conducting Polymer-Based Electrochemical Biosensors

Ayrancı

Demirkol

et al. 2015

Sensors

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Herein, we report a novel ferrocenyldithiophosphonate functional conducting polymer and its use as an immobilization matrix in amperometric biosensor applications. Initially, 4-(2,5-di(thiophen-2-yl)-1H-pyrrol-1-yl)amidoferrocenyldithiophosphonate was synthesized and copolymerized with 4-(2,5-di(thiophen-2-yl)-1H-pyrrol-1-yl)benzenamine at graphite electrodes. The amino groups on the polymer were utilized for covalent attachment of the enzyme glucose oxidase. Besides, ferrocene on the backbone was used as a redox mediator during the electrochemical measurements. Prior to the analytical characterization, optimization studies were carried out. The changes in current signals at +0.45 V were proportional to glucose concentration from 0.5 to 5.0 mM. Finally, the resulting biosensor was applied for glucose analysis in real samples and the data were compared with the spectrophotometric Trinder method.

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Synthesis, characterization and electrochemical behavior of ferrocene-containing highly branched polyurethane and its application in biosensing

Cited by 9 publications

References 42 publications

Influence of carbon nanotube functionalization on the physical properties of PCL diol/chitosan blends

Influence of carbon nanotube functionalization on the physical properties of PCL diol/chitosan blends

Metal-containing and related polymers for biomedical applications

Ferrocene-Functionalized 4-(2,5-Di(thiophen-2-yl)-1H-pyrrol-1-yl)aniline: A Novel Design in Conducting Polymer-Based Electrochemical Biosensors

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