A general high-yielding method for the preparation of monosubstituted β-cyclodextrin derivatives which have attached a thiol group in position 6 is described. The thiol group is attached through linkers of different lengths and repeating units (ethylene glycol or methylene). The target compounds were characterized by IR, MS and NMR spectra. A simple method for their complete conversion to the c...

High-resolution mass spectrometry (HRMS) continues to play an important role in the compositional characterization of larger organic molecules. In the field of polymer characterization, however, the application of HRMS has made only slow progress because of lower compatibility between matrix-assisted laser desorption/ionization (MALDI) and ultrahigh-resolution Fourier transform ion cyclotron re...

Two different mesogenic units, namely biphenyl and azobenzene, were installed centrally within the polymer backbone pendant alkylene segments; purpose was to examine if chain folding of occurs so as segregate azobenzene units in adjacent layers a smectic-type ordering. sets isomeric main-chain side-chain liquid crystalline polymers (MCSC-LCPs), SC-AzoCx-MC-BPCx SC-BPCx-MC-AzoCx (x=6 or 10), syn...