Linked Life Data

16851576

Source:http://linkedlifedata.com/resource/pubmed/id/16851576

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
12
pubmed:dateCreated
2006-7-20
pubmed:abstractText
The synthesis, characterization, and various photophysical properties of axially substituted tetrapyrazinotetraazaporphyrinatotitanium(IV) oxide (Pyz(4)TAPTiO) (1), tetrapyrazinotetraazaporphyrinatovanadium(IV) oxide (Pyz(4)TAPVO) (2), tetrapyrazinotetraazaporphyrinatozirconium(IV) dihydroxide [Pyz(4)TAPZr(OH)(2)] (3) are reported. Nonlinear optical (NLO) properties of Pyz(4)TAPs 1-3 have been evaluated at 532 nm with nanosecond pulses for optical limiting (OL). It is found that 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 (Pcs). In the linear optical regime Pyz(4)TAPs 1-3 display a blue shift (about 50-60 nm) of the main UV-vis absorption bands with respect to Pcs and exhibit orange-red fluorescence, which can be observed with the eye in the case of 1. Frontier electronic orbitals of a Pyz(4)TAP could be depicted from available experimental data and the results of density functional theory (DFT) calculations. In the solid state, Pyz(4)TAPTiO (1) displays photoconducting properties.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
1520-6106
pubmed:author
pubmed:issnType
Print
pubmed:day
31
pubmed:volume
109
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
5425-32
pubmed:meshHeading
pubmed:year
2005
pubmed:articleTitle
Synthesis of axially substituted tetrapyrazinoporphyrazinato metal complexes for optical limiting and study of their photophysical properties.
pubmed:affiliation
Institutes of Organic Chemistry and Physical and Theoretical Chemistry, University of Tübingen, Auf der Morgenstelle 18, D 72076 Tübingen, Germany.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't