Director's Message and Videos

Director's Message and Videos

Welcome to our web site. Thr...

Take a look

Take a look

Scientific and Technical Ser...



  Personnel List



Available Positions

Prev Next
Enhanced Thermal Oxidation Stability of Reduced Graphene Oxide by Nitrogen Doping

Enhanced Thermal Oxidation Stability of Reduced Graphene Oxide by Nitrogen Doping

Stefania Sandoval, Nitesh Kumar, Dr.  A. Sundaresan, Prof. C. N. R. Rao*, Prof. Amparo Fuertes and Dr. Gerard Tobias*. Chemistry - A European Journal, Volume 20, Issue 38, pages 11999–12003, September 15, 2014

Tuning the Supramolecular Chirality of One- and Two-Dimensional Aggregates with the Number of Stereogenic Centers in the Component Porphyrins

  • Hits: 1425


D. B. Amabilino, P. Iavicoli,H. Xu, L. N. Feldborg, M. Linares, M. Paradinas, S. Stafström, C. Ocal, B. Nieto-Ortega, J. Casado, J. T. López Navarrete, R. Lazzaroni and S. De Feyter

J. AM. CHEM. SOC. 2010, 132, 9350–9362 (2010) | DOI: 10.1021/ja101533j


A synthetic strategy was developed for the preparation of porphyrins containing between one and four stereogenic centers. The low-dimensional nanoscale aggregates of these compounds reveal the profound effects of this varying molecular chirality on their supramolecular structure and optical activity. A scanning tunneling microscopy study of monolayers on graphite shows that the degree of structural chirality with respect to the surface increases almost linearly with the number of stereogenic centers. In solution, four hydrogen bonds induce the formation of an H-aggregate, and circular dichroism measurements and theoretical studies indicate that the compounds self-assemble into helical structures. Both the chirality and stability of the aggregates depend critically on the number of stereocenters.


Newsletter ICMAB



Sc.&Technical Services

Scientific Highlights

Links of interest


sts banner

logoeugris    mecgris    csicgris
bncbgris          uabgris        uabceigris      pruabgris