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Featured researches published by Rolf Tünnemann.


Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy | 2003

Small interacting peptides. Part I. Interaction of cyclohexapeptides with an unspecific SiOH surface: comparison of infrared investigations and force field calculations

Frauke Palmer; Christiane Stingel; Rolf Tünnemann; Hans-Georg Mack; Günther Jung; Volker H. Hoffmann

The interaction of cyclohexapeptides c(X(1)(1)K(2)X(2)(3)K(4)X(3)(5)K(6)) in water with hydrolysed silicon surfaces were studied by attenuated total reflection Fourier transform infrared (ATR FTIR) spectroscopy and by force field calculations. The band sequences (1800-1500 cm(-1)) for dissolved and adsorbed cyclohexapeptides were recorded and compared with those obtained after flushing with distilled water in order to eliminate the background signal of the peptides in solution. Band analyses and principal component analyses were carried out for the characteristic peptide vibrations in order to evaluate the spectra. In addition, force field calculations were performed to study the binding energies to the surface and to illustrate the possible structures of the cyclohexapeptides. The positively charged lysine side chains of the cyclohexapeptides interact with the OH groups of the surface, as indicated by band shifts. This also was verified by the force field calculations. The bonding stability increases with the number of interacting sites (lysine side chains and other peptide residues) to the surface. These sites are determined by structure and polarity of the cyclohexapeptides.


Analytical Chemistry | 2002

Label-free parallel screening of combinatorial triazine libraries using reflectometric interference spectroscopy.

Oliver Birkert; Rolf Tünnemann; Günther Jung; Günter Gauglitz


Analytical Chemistry | 2001

Optical biosensors. Monitoring studies of glycopeptide antibiotic fermentation using white light interference.

Rolf Tünnemann; Martin Mehlmann; Roderich D. Süssmuth; Bernd Buhler; Stefan Pelzer; Wolfgang Wohlleben; Hans-Peter Fiedler; Karl-Heinz Wiesmüller; Günter Gauglitz; Günther Jung


Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy | 2004

Small interacting peptides: Part II: Interaction of cyclohexapeptides with immobilised model peptides. Comparison of infrared investigations, principal components analysis and force field calculations

Frauke Palmer; Christiane Stingel; Rolf Tünnemann; Hans-Georg Mack; Günther Jung; Volker H. Hoffmann


Analytical Biochemistry | 2002

Online monitoring of solid-phase peptide syntheses on glass-type surfaces using white light interference.

Hans-Martin Haake; Rolf Tünnemann; Andreas Brecht; Volkhard Austel; Günther Jung; Günter Gauglitz


Journal of Molecular Structure | 2001

Cyclic peptides and their interaction with peptide coated surfaces

Frauke Palmer; Rolf Tünnemann; D Leipert; Christiane Stingel; Günther Jung; Volker H. Hoffmann


Nachrichten Aus Der Chemie | 2000

Kombinatorische Ansätze zu molekularen Rezeptoren für die Chemosensorik

Rolf Tünnemann; Günther Jung


ChemInform | 2007

Combinatorial Approaches to Molecular Receptors for Chemosensors

Dietmar Leipert; Jürgen Mack; Rolf Tünnemann; Günther Jung


Archive | 2001

Charakterisierung einer Triazin-Bibliothek mittels markierungsfreier HTS-Reflektometrischen Interferenzspektroskopie

Oliver Birkert; Rolf Tünnemann; Günther Jung; Günter Gauglitz


Archive | 2001

Online-Überwachung eines Fermentationsprozesses mit Reflektometrischer Interferenzspektroskopie

Martin Mehlmann; Rolf Tünnemann; H. P. Fiedler; Stefan Pelzer; Wolfgang Wohlleben; Günther Jung; Günter Gauglitz

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