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Chemical and Petrochemical
Technologies Dept

Chromogen-polymeric composite systems for photoinduced surface structures and selective ion sensors (CROMOPOL)
Techological processes
for organic
products synthesis


  • The research project proposes the preparation of chromogenes with azo and azomethine structure derived from the sinton 2-(4-amino-benzenesulfonyil)-ethanol, the modification of the structures by transforming the ?-hydroxyethyl-sulfatoethylsulfone, chloroethylsulfone or vinylsulfone for functionalizing with a “bifunctional anchoring agent” (alkyltrialcoxysilane derivatives with nucleophile groups - NH2, SH, OH, vinyl or isocyanate). The covalent linking of the modified chromogenes with alcoxysilane residues will be made either on a silica gel substrate obtained “in situ” by the hydrolysis of tetralcoxysilane, either using other inorganic oxide type substrates (iron oxides, aluminium oxides, titanium dioxide) obtained by hydro(solvato)thermal procedures finally hybrid organic – inorganic chromogen – polymer filmogen materials being obtained.
  • It is expected that by structural characterization of the chromogenes, of the oxide type substrates, of the filmogen materials as well as by investigating the structure and morphology of the film surface that is obtained using hybrid chromogen – polymers, of the interaction substrate – film and of the influences of the structure – neighborhoods interactions on the optical properties or ion selective of the obtained composite materials important aspects regarding such materials are to be obtained and their applications in the field of ion selective sensor and optic memories.
  • It is expected also to valorize all the structural attributes specific for the azo and azomethine chromogenes, the cis-trans isomerization of the azo and azomethine groups respectively, which generate photochromism having applications in the optical storage of information, or, mostly because of the substituents in the chromogen structure by hydroxiazo – ketohydrazo tautomerism, halochromism or the presence of complexing groups in showing ion selective properties. In respect to this the testing and evaluation of the ion selective sensor properties of some of the types of materials is proposed as well as in other cases the photoinduced anisotropies upon irradiation with a laser beam should be checked. The chromogens and the composite materials that result will be tested and evaluated also from the point of view of classic uses in dyeing processes, determining thus the resistances properties, some of these being necessary also for the unconventional uses.

  • National Research and Development Institute for Chemistry and Petrochemistry
  • University Politehnica of Bucharest
  • National Institute of Materials Physics
  • National Institute for Laser Plasma and Radiation Physics
  • "Costin D. Neniţescu" Institute of Organic Chemistry – Romanian Academy
  • Institute of Physical Chemistry Ilie Murgulescu – Romanian Academy

  1. Modelation of the structure, preparation and characterisation of new donor-acceptor cromogenes, azo and azomethine that posses functional groups capable to be linked to polymere structures and evaluation of the performancies of these substances in dying applications.
  2. Preparation and characterization of derived polymer structures by reaction with donor-acceptor type chromogenes and evaluation of the properties of the synthesized compounds.
  3. Preparation of composite materials with potential ion selective sensor properties by preparing inorganic supports and deposition on these by Langmuir-Blodgett layers of the organic-inorganic hybrids functionalized with chromogenes, characterization of the composites and evaluation of ion selective sensor properties.
  4. Preparation and characterization of some organic-inorganic hybrids functionalized with photochromic materials, testing and evaluation of the optic switch properties and their performances in data recording processes.
  5. Dissemination on a large scale of scientific results of the project and promotion of the obtained technologies and products.


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