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EMBEDDING JACOBSEN MANGANESE(III) SALEN COMPLEX INTO NANOPOROUS MOLECULAR SIEVES: SPECTROSCOPIC CHARACTERISATION OF HOST-GUEST INTERACTIONS

L. Frunza1,* , I. Zgura1, I. Nicolaie1, A. Dittmar2, H. Kosslick2, R. Fricke2

Affiliation

  1. National Institute of Materials Physics, 077125-Bucharest-Magurele, P.O. Box Mg 7, Romania
  2. Institute of Applied Chemistry, Berlin, Germany

Abstract

We report some spectroscopic arguments showing the guest-host interactions in the case of the composites containing Jacobsen salen complex and nanoporous molecular sieves of different types: SBA-15, MCM-48, MCM-41. The complex was embedded by impregnation, but care was given for washing out the weakly anchored part. Siliceous nanoporous materials lead to a weaker interaction than Al containing forms. Thermal analysis has shown that at least in the case of the composite containing MCM-41 the embedded complex still contain chloride ions, therefore the bonding to the surface was apical. In situ experiments indicate that the thermal stability of the embedded complex is higher than in the free state. The differences among the composites coming from the structure of the molecular sieves are discussed..

Keywords

Manganese salen complex, Molecular sieves, Host-guest interactions, FTIR spectroscopy, UV-vis spectroscopy.

Submitted at: July 4, 2005
Accepted at: July 21, 2005

Citation

L. Frunza, I. Zgura, I. Nicolaie, A. Dittmar, H. Kosslick, R. Fricke, EMBEDDING JACOBSEN MANGANESE(III) SALEN COMPLEX INTO NANOPOROUS MOLECULAR SIEVES: SPECTROSCOPIC CHARACTERISATION OF HOST-GUEST INTERACTIONS, Journal of Optoelectronics and Advanced Materials Vol. 7, Iss. 4, pp. 2141-2148 (2005)