Redl, F. X. and Lutz, M. and Daub, Joerg (2001) Chemistry of porphyrin-appended cellulose strands with a helical structure: Spectroscopy, electrochemistry, and in situ circular dichroism spectroelectrochemistry. CHEMISTRY-A EUROPEAN JOURNAL, 7 (24). pp. 5350-5358. ISSN 0947-6539
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Around 100 porphyrin units have been selectively linked at C(6)-O to a cellulose (Avicel(R)). The properties of the metal-free and zincated porphyrin-celluloses 2 and Zn-2 have been determined by optical and electrochemical methods. Circular dichroism indicates a helical arrangement of the porphyrin units and reveals intra-chain coupling reminiscent, in the broadest sense, of strands of nucleic acids. Cyclic voltammetry and spectroelectrochemistry have been used to characterize the radical ions and dianions. The electrochromism of the oxidation of cellulose 2 to porphyrin radical cations of 2 has been employed for both molecular switching and the transduction of an electrochemical input into chiroptical signal expression.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | HOST-GUEST COMPLEXATION; ABSOLUTE-CONFIGURATIONS; PHOTODYNAMIC THERAPY; FREE-BASE; ELECTRONIC COMMUNICATION; SUBSTITUTED PORPHYRINS; HOMOGENEOUS SOLUTION; ACID RECOGNITION; MOLECULAR WIRES; DECKER-SANDWICH; cellulose; circular dichroism; helical structures; in situ spectroelectrochemistry; porphyrinoids |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Organische Chemie > Alumni or Retired Professors > Prof. Dr. Jörg Daub |
| Depositing User: | Petra Gürster |
| Date Deposited: | 19 May 2021 08:37 |
| Last Modified: | 19 May 2021 08:37 |
| URI: | https://pred.uni-regensburg.de/id/eprint/40866 |
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