Multiphoton Reactive Surfaces Using Ruthenium(II) Photocleavable Cages

Abstract

Photoreactive surfaces derived from a new photocleavable surface modification agent and with photosensitivity in the Vis and IR region are described. A ruthenium(II) caged aminosilane, [Ru(bpy) 2 (PMe 3 ) (APTS)]-(PF 6 ) 2 , was synthesized and attached to silica surfaces. Light irradiation removed the cage and generated surface patterns with reactive amine groups. The photosensitivity of this compound under single (460 nm) and two-photon (900) excitation is demonstrated. Functional patterns with site-selective attachment of other molecular species are described.

Light‐Triggered Multifunctionality at Surfaces Mediated by Photolabile Protecting Groups

“…[ 14 , 28 ] Chemical patterns have also been obtained by the deprotection of caged surfaces using wavelengths > 700 nm. Two-photo uncaging was realized using DMNB [ 70 ] and [Ru(bpy) 2 (PMe) 3 (APTS)](PF 6 ) 2 [ 71 ] complexes as caging groups. Site-selective covalent attachment of polymers chains, fl uorophores, and colloidal particles to the reactive (i.e.…”

Photoactivation of Anticancer Ru Complexes in Deep Tissue: How Deep Can We Go?

“…1 H NMR and COSY spectra of the Ru complexes were measured to prove the successful synthesis of the complexes (Figure S8–S16 in the Supporting Information). The chloride salt of each complex was used for photoreaction experiments performed in H 2 O, which were obtained using an ion exchange resin (DOWEX 22 Cl) according to a reported method . Generally, 20 mg Ru complex was dissolved in 8 mL of a mixture of acetone/water (1:2) and 500 mg of anionic exchange resin (DOWEX 22 Cl) was added.…”

Von Ein‐ zu Zwei‐Photonen‐Sonden: photoaktivierbare Reagentien, Aktuatoren und Photoschalter

“…[62] RuBiPy-Komplexe wurden zur Schützung von Amingruppen in verschiedenen Molekülen eingesetzt. [63] Reagentien dieser Art, z. B.…”