Multistate / multifunctional

Photochrome flavylium compounds as multistate/multifunction molecular-level systems 99CC107. 

Multistate/Multifunctional Molecular-level Systems-Photochromic Flavylium Compounds... 

In this chapter, we discuss the multistate/multifunctional character of the chemistry of synthetic photochromic flavylium compounds and show that the examination of complex chemical systems from novel viewpoints may reveal very interesting features and may be useful to introduce new concepts in the field of chemical... 

Like anthocyanins,1331 which are one of the most important sources of color in flowers and fruits, synthetic flavylium salts in aqueous solutions undergo various structural transformations 34-371 that can be driven by pH changes and light excitation. Such transformations are often accompanied by quite dramatic color changes or color disappearance. In the last few years, the thermal and photochemical reactions of several synthetic flavylium salts have been investigated in great detail, 17 19,34-43] an(j jlag ]Deen shown that some of these compounds can perform write-lock-read-unlock-erase cycles and can also exhibit multistate/multifunctional behavior. 

NMR spectroscopy of flavan-3-ols and proantocyanidines 97KPS545. Photochrome flavylium compounds as multistate/multifunction molecular-level systems 99CC107. 

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