Synthesis of axially substituted tetrapyrazinoporphyrazinato metal complexes for optical limiting and study of their photophysical properties
Article Abstract:
The synthesis, characterization, and various photophysical properties of axially substituted tetratyrazinotetraazaporphyrinatotitanium(IV) oxide, tetrapyrazinotetraazaporphyrinatovanadium (IV) oxide, tetrapyrazinotetraazaporphyrinatozirconium(IV) dihydroxide are reported. The introduction of nitrogen atoms in the condensed rings of the tetrapyrrolic macrocycles together with the presence of axial substituents lead to an improvement of the excited state absorption properties in comparison to phthalocyanines.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2005
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Oxygen sites and network coordination in sodium germanate glasses and crystals: High-resolution oxygen-17 and sodium-23 NMR
Article Abstract:
High resolution (super 17)O results, including triple-quantum magic angle spinning NMR (3QMAS) on a series of crystalline model compounds that allow the definition of ranges of chemical shifts corresponding to oxygens bonded to various coordinations of Ge, is presented. The results as well as comparison of molar volumes of glasses and high-temperature liquids, suggest the possibility of significant temperature effects on liquid structure.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2006
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Solid-state (super 91)Zr NMR of Bis(cyclopentadienyl)diclorozirconium(IV)
Article Abstract:
The use of signal enhancement schemes such as bis(cyclopentadienyl)diclorozirconium(IV) DFS/QCPMG, QCPMG for the acquisition of (super 91) ZR NMR spectra permits the study of an organometallic Cp2ZrCl2 as well as inorganic material with a large quadrupolar interaction, a ceramic zirconium oxide NMR rotor.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2004
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