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HL: Fachverband Halbleiterphysik

HL 90: Poster III

HL 90.41: Poster

Donnerstag, 10. März 2016, 16:00–19:00, Poster A

Characterization of diamondoids by Raman spectroscopy — •Dominique B. Schuepfer¹, Andrey A. Fokin², Peter R. Schreiner², and Peter J. Klar¹ — ¹Institute of Experimental Physics I, Justus Liebig University Giessen, Germany — ²Institute of Organic Chemistry, Justus Liebig University Giessen, Germany

Diamondoids, like adamantane, are the smallest building blocks of diamonds and are currently used to form new molecules by linking these sp³-bonded units to larger cages. Raman spectroscopy is used to characterize various diamondoids as well as the newly formed materials. In particular, in wavelength and polarization dependent Raman experiments the number of modes and their corresponding signal intensity vary, allowing to study the symmetry characteristics and scattering propabilities of the Raman active modes. The vibrational structure of diamondoids and the more complicated coupled diamondoid molecules give insight into the molecule symmetry and electronic structure. Beside this fundamental point of view diamondoids are of great interest as propellant for radiofrequency ion thrusters, because they are available in abundance and match the required properties. Raman spectroscopy could be used to characterize the residual components of the thruster propellant.