[Excerpt] Colour-changing materials with con - trollable properties obtained by low cost and biotechnological means are highly desirable for smart innovative products and applications such as anti-counterfeiting and security printing. Protein-based nanotechno - logy is an ever-growing research field due to the versatility and adap - tability of these biomolecule building blocks and the innovative functiona - lities and applications that can be achieved. [1, 2 ] This work explores the development of a new generation of eco-sustainable inks that take ad - vantage of the unique optical properties of selected reversibly switchab - le fluorescent molecules (RSFMs) for the fabrication of innovative textiles with photocontrolable and photoswitching fluorescent properties.This work was developed in the framework of EcoBioInks4SMartTextiles project (refs. POCI-01-0145-FEDER-030298 and PTDC/CTM-TEX/30298/2017), co-financed by the European Regional Development Fund (ERDF), through the Operational Programme for Competitiveness and Internationalization (COMPETE 2020), under Portugal 2020, and by national funds through FCT - Fundação para a Ciência e a Tecnologia, I.P..info:eu-repo/semantics/publishedVersio
