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In this thesis, the synthesis of oligomers of β-amino acids (β-peptides) is described. Their secondary structure is investigated by several techniques, in particular nuclear magnetic resonance (NMR) spectroscopy, but also circular dichroism and infrared sp ...
We present a theoretical framework for the use of continuously phase modulated radio-frequency pulses for homonuclear decoupling in solid-state NMR. Within this framework, we have derived new families of decoupling sequences using numerical optimization. O ...
The concentration of reduced glutathione (GSH), an antioxidant, may be altered in various brain diseases. MEGA-PRESS was used to edit for the (1)H NMR signal from GSH in the occipital lobe of 12 normal humans. In all studies, GSH was clearly detected with ...
The detn. of residual dipolar couplings (RDCs) by quant. J spectroscopy methods such as heteronuclear single quantum correlation with phase encoded coupling (HSQC-PEC) is prone to systematic errors that may be caused by differential attenuation during the ...
The detn. of residual dipolar couplings (RDCs) by quant. J spectroscopy methods such as heteronuclear single quantum correlation with phase encoded coupling (HSQC-PEC) is prone to systematic errors that may be caused by differential attenuation during the ...
The variable-speed magic-angle sample spinning (VSMAS) technique was extended to two-dimensional spectroscopy in solids yielding two-dimensional spectra free of spinning sidebands. [on SciFinder (R)] ...
The insertion of acetals that exhibit variable structural features into complex peptides such as cyclosporin C (CsC) results in oxazolidine derivatives (pseudoprolines, Psi Pro) of tailored physico-chemical and biological properties. N,O-Acetalation of the ...
A new femtosecond pump-probe spectroscopy technique is demonstrated that permits the high-speed, parallel acquisition of pump-probe measurements at multiple wavelengths. This is made possible by use of a novel, two-dimensional smart pixel detector array th ...
The dynamics of electron bubble formation upon excitation of the A(3ss) Rydberg orbital of NO in solid Ne was studied by conventional spectroscopy and fs pump-probe spectroscopy. The fs pump pulse initiates the formation of a bubble by the expansion of the ...
We present the design, fabrication and test of high-Q factor radiofrequency planar microcoils for nuclear magnetic resonance (NMR) spectroscopy in small volume samples. The coils are fabricated on glass wafers using high-aspect ratio SU-8 photoepoxy and co ...
