Fig. 7: Light-switchable nanoparticle-based catalytic systems.
From: Switchable aqueous catalytic systems for organic transformations
a Light-triggered dynamic formation of ‘nanoflasks’ based on azobenzene-functionalized Au-NPs—upon UV irradiation, cis-isomer aggregated to provide the nanoflask, which provide suitable atmosphere for acetal hydrolysis. Visible-light-triggered trans-isomer disintegrated the nanoflask and consequently switching ‘off’ the catalysis. Adopted with permission from ref. 127, copyright 2015, Nature Publishing Group. b Light-switchable PE-based system—trans-azobenzene-based catalytic system efficiently catalyzes hydrogenation reaction at ambient condition. UV irradiation results phase separation and switching ‘off’ the catalysis, whereas visible light irradiation and homogenization results emulsification for catalytic reaction. Adopted with permission from ref. 128, copyright 2020 Wiley-VCH GmbH.
