Porphyrins and metalloporphyrins as starting materials for multifunctional nanocomposites based on s

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Porphyrins and metalloporphyrins as starting
materials for multifunctional nanocomposites
based on supramolecular architectures exhibiting
optoelectronic, photochemical, electrochemical
and biological properties

• The scientific partnership was set up between
  research and development institutes and
  universities with different domains of interest,
  having the purpose of connecting to the
  priorities and high objectives of European
  research interests regarding multifunctional
  advanced materials.
• Institute of Chemistry -Timisoara of Romanian
  Academy
• Technical University of Cluj-Napoca
• Institute of Physical Chemistry "Ilie Murgulescu"
  - Bucuresti West University of Timisoara
• Research Development National Institute for
  Isotopic and Molecular Technology - Cluj-Napoca
  "Politehnica" University of Timisoara
• ALL THIS INSTITUTES ARE PARTNERS IN AN EXCELLENCE
  RESEARCH CEEX-MATNANTECH PROGRAM

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Calls (topics) of Interest for 2007 on ICT and
NMP NMP-2007-1.1-1 Nano-scale mechanisms of
bio/non-bio interactions NMP-2007-1.1-2
Self-assembling and self-organisation
NMP-2007-1.3-1 Specific, easy-to-use portable
devices for measurement and analysis
ICT-2007.3.6 Micro/nanosystems
micro-/nano-scale devices
INSTITUTE OF CHEMISTRY-TIMISOARA OF ROMANIAN
ACADEMY Contact Persons Dr. chim. OTILIA
COSTISOR, ocostisor_at_acad-icht.tm.edu.ro Dr. ing.
EUGENIA FAGADAR-COSMA, efagadar_at_yahoo.com
The relevant core competencies are based on the
fact that state-of-the-art research involves
interdisciplinarity Inorganic and organic
chemistry Supramolecular chemistry Material
science Electrochemistry Analytical
chemistry Physics Bioinorganic Biology
Human resources Highly qualified researchers and
young Master and PHD students Equipments for
Synthesis and analysis UV-vis, 1H-NMR, 13C-NMR,
RES, FT-IR and fluorescence spectroscopy,
Scanning microscopy techniques (AFM), Thermal
analysis, Cyclic voltammetry, Conductibility
measurements
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The purpose of this project is the research and
implementation of new materials, composites and
state-of-the-art techniques bounded by a central
element the synthesis and utilizations of
porphyrinic macrocycles. These are molecules
capable of drastically changing or adjusting
their properties by reconfiguring the electron
distribution of the aromatic ring in order to
develop supramolecular structures, thus allowing
the accomplishment of some strategic objectives
related to the development of fundamental
sciences (physics and chemistry),
nanotechnologies, highly strategically technology
domains (photovoltaic cells), safety and
durability for building engineering (corrosion
inhibition), monitoring the quality of the
environment (electrochemical sensors) and
competitive health treatments (PDT therapy of
cancer). The porphyrin molecules will be
assembled by different means (electrode-deposition
, immobilization in polymeric membranes,
functionalization etc.), as supramolecular
architectures.
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• Multicomponent synthesis of asymmetric porphyrins
  as new sources of ionophores, photosensitizers
  and dyes.
• Supramolecular structures of meso-tetraphenylporph
  yrin peripherally diverse substituted and of
  their metallic complexes, as sensibility
  enhancers for renewable energy systems

R1R2R3R4 3, 4-di MeO (1) R1R2R33, 4-di
MeO R43-OH (2) R1R2 3, 4-di MeO R3R4 3-OH
(cis) (3) R1R33, 4-di MeO R2R43-OH (trans)
(4) R1R2R33-OH R43, 4-di MeO (5)
R1R2R3R43-OH (6)
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• The formulation of porphyrin and
  metalloporphyrin-based sensitive polymeric
  membranes with the focus on electrochemical new
  sensors for anions or heavy metals building
  functional devices (target on nano-scale devices)
  and monitoring life and food quality as well as
  the degree of pollution in the environment

Thiocyanate-selective electrodes based
on 5,10,15,20-Tetrakis-(4-methoxyphenyl)-porphyri
n-Co(II) The most important characteristics of
the electrodes having the optimum composition of
the membrane are slope ?(65.8 1.0) mV/decade
linear range 110?1110?5 M detection limit
610?6 M response time 20 s. 5,10,15,20-Tetraph
enyl)-porphyrin-Rh(III)chloride Membrane
electrodes with added lipophilic cationic sites
exhibit reversible and near-Nernstian response
toward thiocyanate ions in the concentration
range of 10-510-1 M, with a good stability in
time. The electrodes were successfully applied to
the potentiometric determination of thiocyanate
in human biological samples.
Iodide-selective electrode, based
on 5,10,15,20-Tetrakis(4-pyridyl)-21,23H-porphyri
n-Zn(II) The sensor exhibited a near Nernstian
response with a slope of -52.2 0.4 mV/decade
for iodide ions over a wide concentration range
from 1.010-1 to 7.410-6 M and a fast response
time of 15 s.
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• New inorganic-organic hybrid silica-porphyrin
  materials for development of applications in
  optics, electronics and catalysis.