Structural and spectroscopic characterization of poly(styrene sulfonate) films doped with neodymium ions

Silva, Marcelo C.; Camargo, Andréa Simone Stucchi de; Nunes, L.A.O.; Silva, R.A.; Marletta, Alexandre

doi:10.1016/j.jnoncrysol.2008.07.032

Cited by 17 publications

(13 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Because of these features and the electronic structure, such lanthanides can form complexes with bonds that are mainly ionic (electrostatic) in nature. 6,7 Polymers and polymeric composites have steadily gained importance in our life. Numerous investigations have been conducted on different polymer-metal composites in order to understand their physical properties.…”

Section: Introductionmentioning

confidence: 99%

Dielectric properties of PVDF thin films doped with 3 wt.% of RCl3 (R = Gd or Er)

2014

View full text Add to dashboard Cite

The dielectric permittivity (ɛ′), electric modulus (M″), and ac conductivity (σac) of pure polyvinylidene fluoride (PVDF) and PVDF containing 3 wt.% RCl3 (R = Er or Gd) were measured. The incorporation of 3 wt.% of ErCl3 or GdCl3 within the PVDF matrix is found significantly to increase its ɛ′ and σac. All investigated samples show different relaxation processes within the studied temperature and frequency ranges. The first process is αa-relaxation, which occurs around the glass transition temperature, Tg. The second process is αc-relaxation, which is associated with the molecular motions in the crystalline region of the main polymer chain. Third is the ρ-relaxation which observed for pure PVDF at low temperatures and high frequencies. The frequency dependence of σac shows that the conduction mechanism for pure PVDF and PVDF containing 3 wt.% of RCl3 is correlated barrier hopping (CBH). The binding energy of the carriers was calculated based on the CBH model. Finally, the results obtained in this work are discussed and compared with those for 3 wt.% LaCl3-doped PVDF and similar materials.

show abstract

Section: Introductionmentioning

confidence: 99%

Dielectric properties of PVDF thin films doped with 3 wt.% of RCl3 (R = Gd or Er)

2014

View full text Add to dashboard Cite

show abstract

“…3 deformation out of plane of C-H of aromatic ring at 800 cm − 1 , and iv) symmetric stretching of O-H between 3000 and 3900 cm -1 [6]. In the case of NdCr-PSS, the spectrum shows the similar absorbance bands; which the main difference is the enlargement of the bands in all spectral range.…”

Section: Resultsmentioning

confidence: 89%

“…1b and c, respectively, is related to transitions of the nitrate orbitals and the band above 300 nm (peak at 240 nm -not shown) for PSS (Fig. 1a) is due to the π-π* transition due to the phenyl rings [6].…”

Section: Resultsmentioning

confidence: 99%

“…The poly(styrene sulphonate) (PSS) synthesis followed Reference [6]. Scheme 1 shows the route to obtain the PSS in acid form (H-PSS).…”

Section: Methodsmentioning

confidence: 99%

“…However, up to date little studies has been realized in order to investigate the feasibility of the use of polymeric matrix to host rare earth ions. The difficulty, which is circumventing by the use of synthesis route presented in Reference [6], is that Nd ions cannot be easily dissolved in polymeric matrix [3,7]. It is also known that an increase in the Nd emission efficiency can be obtained through the energy transfer from a sensitizer.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Synthesis and optical characterization of poly(styrene sulphonate) films doped with neodymium (III) and co-doped with chromium (III)

Marletta

Campos

Nogueira

et al. 2010

Journal of Non-Crystalline Solids

Self Cite

View full text Add to dashboard Cite

This work addresses the new synthesis of poly(styrene sulphonate) (PSS) films doped with neodymium ion (Nd 3+ ) and co-doped with chromium ion (Cr 3+ ). NdCr-PSS films were obtained by using the sulphonated polystyrene acid (H-PSS), neodymium nitrate (Nd(NO 3 ) 3 ), and chromium nitrate (Cr(NO 3 ) 3 ) in aqueous solution. Absorption spectrum of NdCr-PSS film shows the characteristic transition bands of Nd 3+ and Cr 3+ in UV-Vis-NIR region. Infrared spectra indicate that the dopant is bounded to the PSS lateral groups SO 3 − . The selective photoluminescence displays spectra blue shift when Nd and Cr ions are incorporated on PSS films. The behavior results corroborate to decrease the interaction between aromatic rings for adjacent PSS monomers, i.e., the aggregation formation.

show abstract

Temperature dependent dielectric properties of self‐standing and flexible poly(vinylidene fluoride) films infused with Er³⁺ doped GeO₂ and SiO₂ nanoparticles

Kar

Bose

Das

et al. 2016

J of Applied Polymer Sci

View full text Add to dashboard Cite

The synthesis of Er3+@GeO2 and Er3+@SiO2 nanoparticle impregnated self‐standing poly(vinylidene fluoride) films by a facile solution casting technique has been reported. The prepared films were thoroughly characterized using X‐ray diffraction technique, field emission scanning electron microscopy, and transmission electron microscopy. The optical properties were evaluated using UV–Vis spectroscopy. Detailed study on the temperature dependent dielectric properties of the composite films with different Er3+ content were also investigated to establish the electrical properties of the same, which revealed the presence of different relaxation processes, namely, and ρ. Due to the smaller size, Er3+@SiO2 was found to disperse better in the PVDF matrix than Er3+@GeO2, which resulted in higher dielectric constant of the former at 300 K. At higher temperature (403 K), the behavior was reversed due to the formation of larger sized low mobility complexes. An investigation on ac conductivity proved the conduction mechanism for neat as well as composite PVDF films to follow the Correlated Barrier Hopping model. The loading of Er3+@GeO2 and Er3+@SiO2 nanoparticles in the PVDF matrix significantly enhances the dielectric properties without losing the flexibility of the composite films. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 44016.

show abstract

Structural and spectroscopic characterization of poly(styrene sulfonate) films doped with neodymium ions

Cited by 17 publications

References 17 publications

Dielectric properties of PVDF thin films doped with 3 wt.% of RCl3 (R = Gd or Er)

Dielectric properties of PVDF thin films doped with 3 wt.% of RCl3 (R = Gd or Er)

Synthesis and optical characterization of poly(styrene sulphonate) films doped with neodymium (III) and co-doped with chromium (III)

Temperature dependent dielectric properties of self‐standing and flexible poly(vinylidene fluoride) films infused with Er³⁺ doped GeO₂ and SiO₂ nanoparticles

Contact Info

Product

Resources

About

Structural and spectroscopic characterization of poly(styrene sulfonate) films doped with neodymium ions

Cited by 17 publications

References 17 publications

Dielectric properties of PVDF thin films doped with 3 wt.% of RCl3 (R = Gd or Er)

Dielectric properties of PVDF thin films doped with 3 wt.% of RCl3 (R = Gd or Er)

Synthesis and optical characterization of poly(styrene sulphonate) films doped with neodymium (III) and co-doped with chromium (III)

Temperature dependent dielectric properties of self‐standing and flexible poly(vinylidene fluoride) films infused with Er3+ doped GeO2 and SiO2 nanoparticles

Contact Info

Product

Resources

About

Temperature dependent dielectric properties of self‐standing and flexible poly(vinylidene fluoride) films infused with Er³⁺ doped GeO₂ and SiO₂ nanoparticles