Molecular Memory Breakthrough: Entering a New Era of Data Storage

Fulgimide photoswitches can exist in three different forms. This study developed a method to quantitatively switch between the different forms by controlling the multiplicity and photoisomerization conditions. Credit: Lucie Wohlrábová / IOCB Prague

Structural changes in photoswitches are usually manifested as alterations of their macroscopic properties. When exposed to light of certain parameters, a molecule can, for example, change its color, which can even be visible to the naked eye. For instance, blue can turn into yellow and vice versa, and the two colors can be treated as zeroes and ones, respectively. Individual molecules thus function in the same way as memory bits and are also easy to read.

Jakub Copko and Tomáš Slanina, head of the Redox Photochemistry group at IOCB Prague. Credit: Tomáš Belloň / IOCB Prague

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