Formation and characterization of europium bisphthalocyanine nanowires by electrophoretic deposition

Bai, Ru; Chen, Hongzheng; Zhou, Hao; Shi, Minmin; Wang, Mang

doi:10.1016/j.jcrysgro.2005.08.022

Cited by 7 publications

(8 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These results are in good agreement with the previous studies using other phthalocyanine compounds. 24,26 The mechanism of electrophoretic deposition involves two steps. In the first step, protonated LuPc 2 species formed by the action of the acidic media migrate toward the oppositely charged electrode.…”

Section: Resultsmentioning

confidence: 99%

“…EPD films were prepared at deposition times of 40, 60, and 180 s. Initially, the UV−vis spectra of the prepared films showed a purple color (maximum at 520 nm) that corresponded to the protonated species. ,− After preparation, the films were washed with deionized water. Then, spectra were recorded every 2.5 min (Figure a).…”

Section: Resultsmentioning

confidence: 99%

“…Attempts have also been made to prepare nanowires of gadolinium and europium double-decker phthalocyanines. [24][25][26] Lanthanide bisphthalocyanines (LnPc 2 ) are of special interest as sensitive materials due to their rich electrochemistry, which is *Corresponding author. Phone: þ34 983423540.…”

Section: Introductionmentioning

confidence: 99%

“…Studies of their morphology and their optical properties have been done. Attempts have also been made to prepare nanowires of gadolinium and europium double-decker phthalocyanines. − …”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Films of Lutetium Bisphthalocyanine Nanowires As Electrochemical Sensors

Rodrı́guez-Méndez¹,

Saja²

2010

Langmuir

View full text Add to dashboard Cite

Lutetium bisphthalocyanine (LuPc(2)) nanowires have been successfully obtained by electrophoretic deposition (EPD). The influence of the deposition conditions and annealing in the structure of the films has been studied by AFM, SEM, X-ray diffraction (XRD), UV-vis absorption, and near-infrared (NIR). The electrochemical properties of the EDP films immersed in different electrolytic solutions (KCl, MgCl(2), KClO(4), HCl, and NaOH) indicate that anions diffuse inside the film to maintain the electroneutrality and the kinetics follows the Randles-Sevcik equation. The stability of the response increases strongly upon annealing due to the improvement of the adhesion of the sensitive material to the substrate. The EPD films have been successfully used to detect caffeic acid (an antioxidant of interest in the food industry). The anodic peak associated with the oxidation of caffeic acid appears at 0.54 V and is linearly dependent on the caffeic acid concentration in the 6 × 10(-5) M to 5 × 10(-4) M range with a detection limit of 3.12 × 10(-5) M. The electrochemical behavior of the annealed LuPc(2) EPD films is similar to that observed using Langmuir-Blodgett (LB) nanostructured films. However, the different molecular organization of the molecules inside the film causes differences in the shape and position of the peaks. Although LuPc(2) sensors prepared with both EPD and LB techniques provide stable and reproducible responses, the use of EPD is preferred for real sensing applications because of its lower cost, shorter preparation time, and longer lifetime.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Studies of their morphology and their optical properties have been done. Attempts have also been made to prepare nanowires of gadolinium and europium double-decker phthalocyanines. − …”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Films of Lutetium Bisphthalocyanine Nanowires As Electrochemical Sensors

Rodrı́guez-Méndez¹,

Saja²

2010

Langmuir

View full text Add to dashboard Cite

show abstract

“…Arrays of sensors based on the nanostructured layers have been prepared by Langmuir-Blodgett (LB), Layer by Layer (LbL), Self-assembling (SAM) or by electrodeposition (EDP) [17][18][19]. The voltammograms are similar to those obtained in non-nanostructured sensors, but the peaks are better defined and the separation between the anodic and cathodic waves is reduced as a result of the improvement of the reversibility (Fig.2).…”

Section: A Electronic Tongue Based On Nanostructured Filmsmentioning

confidence: 83%