Synthesis and optical characterization of poly(styrene sulfonate) films doped with Nd(III)

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

“…4 displays the infrared (FTIR) spectra for Nd07 and H-PSS film and Table 2 lists the corresponding vibrational modes for polymeric matrix. In comparison with the spectrum of H-PSS, the presence of Nd in Nd07 introduces a change of intensity of all peaks, as verified in other polymeric systems by Cristovan et al [11] and Sun et al [2]. This feature can be attributed to the complex formation between the polymer units and the Nd ions.…”

“…Nonetheless, the incorporation does not have a significant variation from 11.9% to 19.3%. This variation is less than that observed when the PSS is doped with NdCl 3 (from 3.5% to 14.5%) [11]. Another important observation is the range in which the Nd-PSS films can be synthesized using the neodymium chloride, from 0.2 to 1.3 mol/L.…”

“…Hence, various synthesis routes have been proposed [2,[8][9][10], to contour this drawback. Recently we have been working on the development of a successful, simplified synthesis route, for the obtainment of neodymium (Nd 3+ ) doped poly(styrene sulfonate) (PSS) films [11]. One large advantage of this method is that it allows a significant increase in the concentration range of doping ions, in the precursor solution.…”

Judd–Ofelt analysis of Nd3+ ions in poly(styrene sulfonate) films

“…[10,11], the IR spectra of H-PSS and Nd-PSS present the common bands of PSS monomer: (i) symmetric stretching of S@O at 1190 cm À1 , (ii) symmetric stretching of O-S-O from 1000 to 1030 cm À1 , (iii) angular deformation out of plane of C-H of aromatic ring at 800 cm À1 and (iv) symmetric stretching of O-H between 3000 and 3900 cm À1 . In the case of Nd-PSS, the spectrum shows the same absorbance bands with an enlargement in all range and a decrease in the intensity at about 3423 cm À1 (O-H mode).…”

“…We used the NdCl 3 solution concentrations equal to 0.3 mol l À1 (S 1 ), 0.5 mol l À1 (S 2 ), 0.7 mol l À1 (S 3 ), 0.9 mol l À1 (S 4 ) and 1.1 mol l À1 (S 5 ) and the H-PSS equal to 0.15 mol l À1 (S 0 ). Scheme 1 shows ionic exchange reaction between H-PSS and NdCl 3 [10,11]. The initial solution was reposed overnight at 5°C and the liquid phase was removed.…”