Synthesis and near infrared properties of rare earth ionomers

Rajagopalan, Padmavathy; Tsatsas, Andreas T.; Risen, William M.

doi:10.1002/(sici)1099-0488(19960115)34:1<151::aid-polb13>3.0.co;2-d

Cited by 9 publications

(5 citation statements)

References 2 publications

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“…Materials with large optical nonlinearities can be useful for frequency conversion and the modulation of laser radiation, leading to a wide range of applications, including optical data storage, communications and optical computing systems. Moreover, organic materials can be used in films and coatings [9]. They usually offer easier and lower-cost processing, faster response time and high transparency [10,11].…”

Section: Introductionmentioning

confidence: 99%

Optical spectroscopy of Nd³⁺ions in poly(acrylic acid)

Ramos-Lara

Ramı́rez

Flores

et al. 2006

J. Phys.: Condens. Matter

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Nd3+ dissolved in solid poly(acrylic acid) was synthesized by polymerization of the monomer partially neutralized with neodymium hydroxide in aqueous solution. The monomer modification and the coordination of ligands to Nd3+ were confirmed by 1H NMR spectroscopy. The measured oscillator strengths for transitions from the ground state to the main excited state manifolds compared favourably with calculated electric dipole oscillator strengths. The spontaneous emission rates, the fluorescence branching ratios and the stimulated emission cross sections of the , and transitions, as well as the radiative lifetime and the quantum efficiency of the 4F3/2 emitting level, were determined.

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Section: Introductionmentioning

confidence: 99%

Optical spectroscopy of Nd³⁺ions in poly(acrylic acid)

Ramos-Lara

Ramı́rez

Flores

et al. 2006

J. Phys.: Condens. Matter

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“…1,2 In recent years, a great deal of interest has been made towards the development of polymerbased luminescent optical materials. [3][4][5] Polyvinylpyrrolidone (PVP) has drawn a special attention amongst the conjugated polymers because of its good environmental stability, easy process ability, moderate electrical conductivity and other related properties. 6 Chemically PVP has been found to be inert, nontoxic, and interestingly, it displays a strong tendency for complexes formation with several smaller molecules.…”

Section: Introductionmentioning

confidence: 99%

Emission Analysis Of Pr[sup 3+]: PVP And Nd[sup 3+]: PVP Films

Sivaiah¹,

Buddhudu²

2010

AIP Conference Proceedings

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Here we report on the results concerning the absorption and emission spectra of RE 3+ (Pr 3+ or Nd 3+ ) doped PVP polymer films. The absorption spectrum of Pr 3+ : PVP polymer film has shown three absorption bands at 444nm ( 3 H 4 → 3 P 2 ), 469nm ( 3 H 4 → 3 P 1 ) and 481nm ( 3 H 4 → 3 P 0 ). From the Pr 3+ : PVP polymer film, an emission at 603 nm ( 1 D 2 → 3 H 4 ) has been observed with an excitation at 443 nm ( 3 H 4 → 3 P 2 ). The absorption spectrum of Nd 3+ : PVP polymer film has exhibited eleven absorption bands at 324 nm, 383 nm, 432 nm, 462 nm, 511 nm, 526 nm, 580 nm, 686 nm, 746 nm, 799 nm, and 869 nm which are assigned to the electronic transitions of 4 I 9/

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“…Optically activated dye molecules incorporated into different polymer hosts have been used successfully as tunable frequency lasers for numerous photonic applications 6–10. More recently the optical characterization of polymers containing rare earth ions (RE 3+ ) suggests that exciting possibilities yet remain in developing more efficient and less expensive materials for optical fiber cables, to mention only one area of applied materials research 11–17…”

Section: Introductionmentioning

confidence: 99%

Ligand‐field splitting of the energy levels of Nd³⁺ (4f³) in 2‐hydroxyethyl methacrylate polymer (HEMA)

Gruber

Sardar

Johnson

et al. 2006

Polymer International

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Detailed absorption spectra of trivalent neodymium (Nd 3+ ) in 2-hydroxyethyl methacrylate polymer (HEMA) are reported at cryogenic temperatures and at wavelengths between 440 and 900 nm. The Nd 3+ spectra are confirmed by comparison with spectra of HEMA samples prepared without inclusion of the rare earth ion. The structure observed on the absorption bands can be interpreted in terms of the ligand-field (crystal-field) splitting of the energy levels of Nd 3+ (4f 3 ) for multiplet manifolds, 4 F /2 . The Nd 3+ ions are complexed as species made up of nitrate anions and H 2 O molecules that come from the neodymium nitrate hydrate salt used in the preparation of the doped HEMA sample. The local symmetry of the Nd 3+ ion in HEMA is very low (possibly C S ), and a number of different environments are likely for the neodymium species in the HEMA structure. We have calculated the ligand-field splitting of the Nd 3+ energy levels using a point charge/dipole model for one such possible species, Nd(NO 3 ) 3 · xH 2 O − (x = 5-6). The results of the model give an agreement of 10 cm −1 (rms) between 43 observed-to-calculated ligand-field (Stark) levels. Comparisons between these same calculated levels and observed levels obtained for Nd 3+ in crystalline hydrated nitrate salts and certain Nd 3+ -doped glasses also give good agreement and support a better understanding of the environment of Nd 3+ in a polymeric structure.

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Synthesis and near infrared properties of rare earth ionomers

Cited by 9 publications

References 2 publications

Optical spectroscopy of Nd³⁺ions in poly(acrylic acid)

Optical spectroscopy of Nd³⁺ions in poly(acrylic acid)

Emission Analysis Of Pr[sup 3+]: PVP And Nd[sup 3+]: PVP Films

Ligand‐field splitting of the energy levels of Nd³⁺ (4f³) in 2‐hydroxyethyl methacrylate polymer (HEMA)

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Synthesis and near infrared properties of rare earth ionomers

Cited by 9 publications

References 2 publications

Optical spectroscopy of Nd3+ions in poly(acrylic acid)

Optical spectroscopy of Nd3+ions in poly(acrylic acid)

Emission Analysis Of Pr[sup 3+]: PVP And Nd[sup 3+]: PVP Films

Ligand‐field splitting of the energy levels of Nd3+ (4f3) in 2‐hydroxyethyl methacrylate polymer (HEMA)

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Product

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Optical spectroscopy of Nd³⁺ions in poly(acrylic acid)

Optical spectroscopy of Nd³⁺ions in poly(acrylic acid)

Ligand‐field splitting of the energy levels of Nd³⁺ (4f³) in 2‐hydroxyethyl methacrylate polymer (HEMA)