The influence of substitutes on the room temperature photoluminescence of 2-amino-4-oxobut-2-enoic acid molecular crystals

Highly photoluminescent organic crystals are the cornerstone of organic optoelectronics and photonics. Here we report on rational design of new organic crystal based on 2-amino-4-oxobut-2-enoic acid. An ability to tune the structure of the acid during the synthesis allows obtaining a series of organic crystals with high structural rigidity at ambient conditions. The crystals also demonstrate a chemically driven efficiency and a shape of red photoemission, allowing us to tune their functionalities. Moreover, scaling of the crystals from a single microcrystal to large-scale thin films retains the PL properties, thus makes it possible to utilize them as active nano and macro components in optoelectronics.