Five new polyamideimides (PAI) were synthesized from five diacid chlorides with preformed imide rings and a telechelic ␣,-diamino-polyoxyethylene (Jeffamine JFA ED600). The diacid chloride monomers could be obtained in high yields (77-92%) from chlorinating the corresponding diacids which were obtai
Synthesis and Photophysical Characterization of a New, Highly Hydrophilic Caging Group
✍ Scribed by Klaus Schaper; S. Abdollah Madani Mobarekeh; Christof Grewer
- Publisher
- John Wiley and Sons
- Year
- 2002
- Tongue
- English
- Weight
- 420 KB
- Volume
- 2002
- Category
- Article
- ISSN
- 1434-193X
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✦ Synopsis
o-Nitrobenzyl-protected bioactive compounds are useful tools in biophysics, allowing controlled photorelease of biologically active compounds with high temporal and spatial precision. Thus, it is possible to study biological processes, such as neurotransmitter-receptor interaction, and many other processes, in much more detail than before. In this respect, these caged compounds have become established as extremely useful tools. In some cases, however, their biological properties (the caged compound should not interact with the biological system), their photochemical properties (quantum yield and kinetics of the photorelease), and their physical properties (high hydrophilicity) are not satisfactory. In order
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A new linear gramicidin analog bearing a biotinyl group grafted on C-terminal part was designed to study ligand-receptor interactions. The C-terminal alcohol in the native peptide was first replaced by an amino group. Then the peptide was synthesized on a polystyrene resin functionalized by the 2-ch