The complex network of chemical reactions of the compound 6-hydroxyflavylium perchlorate was studied by different techniques including UV-vis absorption spectrophotometry, stopped-flow, electrochemistry, and photochemistry. The network is characterized by the formation of a very reactive zwitterionic base as well as by p-quinoidal chalcones. The trans-chalcone is metastable in very acidic solutions and exhibits reversible redox reactions, allowing to introduce for the first time in the flavylium network an electrochemical input.
The Chemistry of 6-Hydroxyflavylium: Zwitterionic base, and p-Quinoidal Chalcones. A Multiswitchable System Operated by Proton, Electron and Photon Inputs / A. Jimenez; C. Pinheiro; A.J. Parola; M. Maestri; F. Pina. - In: PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES. - ISSN 1474-905X. - STAMPA. - 6:(2007), pp. 372-380. [10.1039/b615464f]
The Chemistry of 6-Hydroxyflavylium: Zwitterionic base, and p-Quinoidal Chalcones. A Multiswitchable System Operated by Proton, Electron and Photon Inputs
MAESTRI, MAURO;
2007
Abstract
The complex network of chemical reactions of the compound 6-hydroxyflavylium perchlorate was studied by different techniques including UV-vis absorption spectrophotometry, stopped-flow, electrochemistry, and photochemistry. The network is characterized by the formation of a very reactive zwitterionic base as well as by p-quinoidal chalcones. The trans-chalcone is metastable in very acidic solutions and exhibits reversible redox reactions, allowing to introduce for the first time in the flavylium network an electrochemical input.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
