Spectroscopy and Chemical Dynamics

Abstract

Chemical physics and molecular spectroscopy are topics with a traditionally strong emphasis in the department. Current research focuses on the spectroscopic characterization of transient molecules present in interstellar space and the preparation, control and chemistry of ultracold molecules and ions in the gas phase.

Biofunctionalization of Textile Materials.1. Biofunctionalization of Poly(Propylene) (PP) Nonwovens Fabrics by Alafosfalin

“…Aminophosphonic acids-phosphonic analogs of naturally occurring amino acids ( Figure 1) present a power biological activity, being inhibitors of native amino acid enzymes. The significance of aminophosphonates is illustrated by the multidirectionality of the studies conducted on them: methods of synthesis of aminophosphinic acids (AA PH ), aminophosphonic acids (AA P ) and phosphonopeptides(P-terminal (AA C -AA P ) and N-terminal (AA P -AA C )), occurrence in living matter (e.g., β-Ala P ), biological, pharmacological, industrial and agrochemical properties/applications [18][19][20][21][22][23][24][25][26][27]. AA P AA C -AA P AA P (H) AA P -AA C Phosphonopeptides AA Figure 1.…”

Fullerenes in Space

“…Diatomic species with ad ipole moment are able to attain 2.7 Ki nt he diffuse medium through the spontaneous emission of photons.T his spectroscopic observation was an early indication of the cosmic microwave background. [32] Thus it was decided to use am ethod in which collisional cooling equilibrates the internal degrees of freedom. [6] Forexample,cyclic H 3 + was detected in the diffuse clouds by its infrared transitions [29] and found to have ar otational temperature of 50-80 K. As imilar temperature was inferred for the nonpolar linear chain C 3 based on its electronic spectrum.…”

“…[31] In our earliest studies of the electronic transitions of open-shell organic cations,the emission spectra observed by electron impact ionization of seeded molecular beams also indicated inefficient relaxation of vibrational modes. [32] Thus it was decided to use am ethod in which collisional cooling equilibrates the internal degrees of freedom. Thea dopted approach was to store mass-selected cations in ar adiofrequency( RF) trap where the ions are cooled via collisions with helium atoms at cryogenic temperatures.T he initial experiments utilized a2 2-pole RF trap according to the design [33] and pioneering work of Gerlich.…”