@misc{10481/70362, year = {2021}, month = {7}, url = {http://hdl.handle.net/10481/70362}, abstract = {Photochemical activation is proposed as a general method for controlling the crystallization of sparingly soluble carbonates in space and time. The photogeneration of carbonate in an alkaline environment is achieved upon photo-decarboxylation of an organic precursor by using a conventional 365 nm UV LED. Local irradiation was conducted focusing the LED light on a 300 μm radius spot on a closed glass crystallization cell. The precursor solution was optimized to avoid the precipitation of the photoreaction organic byproducts and prevent photo-induced pH changes to achieve the formation of calcium carbonate only in the corresponding irradiated area. The crystallization was monitored in real-time by time-lapse imaging. The method is also shown to work in gels. Similarly, it was also shown to photo-activate locally the formation of barium carbonate biomorphs. In the last case, the morphology of these biomimetic structures was tuned by changing the irradiation intensity.}, organization = {European Research Council under the European Union's Seventh Framework Program (FP7/20072013)/ERC grant 340863}, organization = {ERC PoC LACRYS 837874}, organization = {Junta de Andalucia P18-FR-5008}, organization = {German Research Foundation (DFG) CO 194/28-1}, organization = {Ministry of Education, Universities and Research (MIUR)}, organization = {Research Projects of National Relevance (PRIN) 2017E44A9P}, organization = {Projekt DEAL}, publisher = {Wiley-VCH Verlag GmbH}, keywords = {Photo-induced crystallization}, keywords = {Calcium carbonate}, keywords = {Biomorphs}, keywords = {Ketoprofen}, keywords = {Photochemistry}, title = {Local Light-Controlled Generation of Calcium Carbonate and Barium Carbonate Biomorphs via Photochemical Stimulation}, doi = {10.1002/chem.202102321}, author = {Menichetti, Arianna and García Ruiz, Juan Manuel}, }