Dr. Kolev received his Ph.D. in 1982 from Institute of Organic Chemistry, Bulgarian Academy of Sciences, Sofia. In 1986 he received an Alexander von Humboldt scholarship and spent a year (1987 to 1988) at the University of Dortmund, Department of Chemistry. There he worked on the field of molecular spectroscopy of aromatic and arylaliphatic carbonyl compounds and also on the field of isotopic labelling with 18O, 15N, 2H. In 1988 he joined the X-ray research group at the University of Dortmund, Department of Chemistry. After a postdoctoral research stay at the University of Dortmund, Organic Structural Chemistry in 1992 he held a position as an associated professor at the Institute of Organic Chemistry, Bulgarian Academy of Sciences, Sofia. In 1994 Dr. Kolev was a visiting professor at the University of Dortmund.
The overall research goal (see my list of publications)is the design, synthesis and characterization of an emphasis on understanding the structure and the properties of novel organic material with large non-linear optical coefficients and enough photochemical resistance against laser beam. This research is directed to compounds with high dipole moments, assimetric conjugated PI-electron systems and producing noncentrosymmetric crystals. The main methods used are infrared, Raman and UV-vis spectroscopy and X-ray analysis. Of particular interest are synthesis and characterization of anion-radicals of 18O labelled aromatic ketones and the carbanions of the 18O arylaliphatic ketones by means of infrared and Raman spectra. The assignment of the vibrational bands is performed using group vibrational concept, isotopic shifts and polarization features of the normal modes. All these species play an important role as intermediates in many chemical reactions.
View a 3D model of Squaric Acid. {42553 bytes}
E-mail kolev@orgchm.bas.bg