Glassy carbon electrodes modified with composites of starburst-PAMAM dendrimers containing metal nanoparticles for amperometric detection of dopamine in urine

Bustos, Erika; Jiménez, Ma. Guadalupe García; Díaz-Sánchez, Blanca R.; Juaristi, Eusebio; Chapman, Thomas W.; Godı́nez, Luis A.

doi:10.1016/j.talanta.2007.02.017

Cited by 59 publications

(27 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Electrochemical techniques show promise for the analysis of neurotransmitters in general because of the possibility of direct measurement of the analytes in vivo [492][493][494][495][496][497][498] and phthalocyanines play an important role in the development of electrodes for sensing purposes. Non-electrochemical techniques involve withdrawing samples from the subject followed by rigorous separation, conditioning and other forms of sample pretreatment methods prior to analysis.…”

Section: Catecholaminesmentioning

confidence: 99%

Metallophthalocyanine-based molecular materials as catalysts for electrochemical reactions

Zagal¹,

Griveau²,

Silva³

et al. 2010

Coordination Chemistry Reviews

538

415

View full text Add to dashboard Cite

Section: Catecholaminesmentioning

confidence: 99%

Metallophthalocyanine-based molecular materials as catalysts for electrochemical reactions

Zagal¹,

Griveau²,

Silva³

et al. 2010

Coordination Chemistry Reviews

538

415

View full text Add to dashboard Cite

“…Subsequently, the electrode was placed in contact with a 20 mM dendrimer solution and a 5 mM EDC solution for during 12 hours, at room temperature to promote the amide bond formation between acid and amino groups. Amide bond formations were confirmed by recording [Ru(NH 3 ) 6 ]Cl 3 couple redox [45].…”

Section: The Modification Of Au Electrodesmentioning

confidence: 95%

“…Godínez et al [42,44,45] reported electrostatic adsorption and covalent of Poly (amidoamine) (PAMAM) dendrimers on thiol-modified gold surfaces for the development of dopamines sensors, demonstrating that these materials constitute a good alternative for electrochemical sensor development.…”

Section: Introductionmentioning

confidence: 99%

Amperometric Detection and Quantification of 8‐Hydroxy‐2′‐deoxyguanosine (8‐OHdG) Using Dendrimer Modified Electrodes

et al. 2008

View full text Add to dashboard Cite

8-Hydroxy-2'-deoxyguanosine (8-OHdG) detection by high performance liquid chromatography (HPLC) with amperometric detection was studied using a Au electrode modified with different dendrimer based thin films. Gold electrode is thiol-modified, forming self-assembled monolayers on which different generation PAMAM dendrimers with terminal functional groups ÀCOOH and ÀNH 2 have been attached using peptidic bonds. Results obtained in synthetic samples show low limits of detection and quantification for 8-OHdG (1.2 Â 10 À9 and 3.7 Â 10 À9 M respectively), with matrix interference elimination, thus avoiding sample pretreatment. Best results are obtained with electrodes modified with aliphatic amino thiols and 3.5 and 4.5 generation carboxylated dendrimers (Au/AET/DG 3.5 and Au/AET/DG 4.5 ), demonstrating that these materials constitute a good alternative for 8-OHdG determination in biological fluids.

show abstract

“…The reason may be that electrocatalytic surfaces can be used to accelerate the electron-transfer reactions of species with slow electron-transfer kinetics. For example, this approach also relied on the fact that polymer dendrimers [35], being structured macromolecules capable of forming thin porous films on electrode surfaces, can absorb organic target species but block undesired. So modifying the electrode surface with monolayers of special polymer dendrimers that can interact specifically with the target molecules and exclude interfering species from the surface was a promising approach for eliminating matrix effects in an electrochemical detector.…”

Section: Amperometric Detectormentioning

confidence: 99%

Electrochemical Detection Coupled with High-Performance Liquid Chromatography in Pharmaceutical and Biomedical Analysis: A Mini Review

Wang¹,

Xu²,

Zhou³

et al. 2007

CCHTS

View full text Add to dashboard Cite

Recent advances in electrochemical detection techniques coupled with high-performance liquid chromatography (HPLC-ECD) in pharmaceutical and biomedical analysis are reviewed. ECD classification and modes including common amperometric, coulometric, conductimetric, and potentiometric detector, are outlined and the some typical examples of determinations in pharmaceutical and biomedical analysis are described. The electrochemical detection system can offer superior merits over other detectors commonly used with HPLC. These techniques have great potential owing to their prominent characteristics in high-throughput screening procedures of drugs in various matrices. Fundamental 67 references from last 5 years related with a field are cited in this review.

show abstract

Glassy carbon electrodes modified with composites of starburst-PAMAM dendrimers containing metal nanoparticles for amperometric detection of dopamine in urine

Cited by 59 publications

References 16 publications

Metallophthalocyanine-based molecular materials as catalysts for electrochemical reactions

Metallophthalocyanine-based molecular materials as catalysts for electrochemical reactions

Amperometric Detection and Quantification of 8‐Hydroxy‐2′‐deoxyguanosine (8‐OHdG) Using Dendrimer Modified Electrodes

Electrochemical Detection Coupled with High-Performance Liquid Chromatography in Pharmaceutical and Biomedical Analysis: A Mini Review

Contact Info

Product

Resources

About