Unveiling the Secrets of a Mysterious Blue Molecule for Enhanced Light Energy Utilization
Scientists from IOCB Prague have unraveled the unique behavior of azulene, a fundamental aromatic molecule known for its distinct blue hue. By violating Kasha's rule, azulene behaves differently from other molecules in terms of emitting light upon transitioning to excited states. The researchers used the concept of (anti)aromaticity to explain this behavior, showing that azulene falls quickly from the first excited state without emitting light, but behaves like a satisfied aromatic substance in the second step, emitting light for a longer duration. This understanding could lead to advances in organic chemistry and the efficient capture of light energy. The researchers also demonstrated that the properties of azulene can be transferred to other aromatic molecules.
