Toward volatile and nonvolatile molecular memories: fluorescence switching based on fluoride-triggered interconversion of simple porphyrin derivatives.
Written in the gel: A fluoride-writable memory system has been demonstrated by using two porphyrin derivatives. Structural modification enabled both volatile and nonvolatile modes. For both porphyrins, fluorescence is quenched by addition of F(-) with only one of the derivatives returning to its initial fluorescent state following removal of F(-) (see scheme). Nonvolatile behaviour is based on anion-induced conversion from porphyrin to oxoporphyrinogen.
Shundo
Atsuomi
A
World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS) 1-1 Namiki, Tsukuba 305-0044, Japan.
Hill
Jonathan P
JP
Ariga
Katsuhiko
K