A comprehensive study of Nd:YAG, Nd:YAlO3, Nd:YVO4 and Nd:YGdVO4 lasers operating at wavelengths of 0.9 and 1.3 μm. Part 2: passively mode locked-operation

Krennrich, D.; Knappe, R.; Henrich, B.; Wallenstein, R.; L’huillier, Johannes A.

doi:10.1007/s00340-008-3070-y

Cited by 15 publications

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“…We have chosen terephthalic acid ( H 2 BDC ) which has been used extensively as an organic spacer, and its extended analogue biphenyl-4,4′-dicarboxylic acid ( H 2 biBDC ), because these rigid ligands (i) are able to establish a bridge between metal centers, affording frameworks with large pores, − and (ii) may enhance the fluorescence of the Ln(III) ions, via the so-called antenna effect. , The combination of this mixed-ligand system with rare-earth ions, such as the small Y(III), allows the synthesis of unusual coordination polymers with interesting properties. The yttrium coordination polymers are relatively limited compared with the f-block metal ions, although yttrium is widely used in laser crystals, − and superconductive materials. − …”

Section: Introductionmentioning

confidence: 99%

Metal Organic Frameworks Assembled from Y(III), Na(I), and Chiral Flexible-Achiral Rigid Dicarboxylates

Amghouz¹,

Roces²,

García-Granda³

et al. 2010

Inorg. Chem.

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New chiral metal organic frameworks, assembled from Y(III), Na(I), and chiral flexible-achiral rigid dicarboxylate ligands, formulated as [NaY(Tart)(BDC)(H(2)O)(2)] (1) and [NaY(Tart)(biBDC)(H(2)O)(2)] (2) (H(2)Tart = Tartaric acid; H(2)BDC = Terephthalic acid; H(2)biBDC = Biphenyl-4,4'-dicarboxylic acid), were obtained as single phases under hydrothermal conditions. Their structures were solved by single-crystal X-ray diffraction (XRD), and characterized by (13)C CPMAS NMR, thermal analyses (thermogravimetry-mass spectrometry (TG-MS) and differential scanning calorimetry (DSC)), and X-ray thermodiffractometry. Both compounds crystallize in the orthorhombic chiral space group C222(1) with a = 6.8854(2) A, b = 30.3859(7) A, c = 7.4741(2) A for 1, and a = 6.8531(2) A, b = 39.0426(8) A, c = 7.4976(2) A for 2. 1 and 2 are layered structures whose three-dimensional stability is ensured by strong hydrogen bond interactions. The dehydration of both compounds is accompanied by phase transformation, while the spontaneous rehydration process is characterized by different kinetics, fast in the case of 1 and slow for 2.

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