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Metallo-Supramolecular Gels that are Photocleavable with Visible and Near-Infrared Irradiation.

ABSTRACT: A photolabile ruthenium-based complex, [Ru(bpy)₂ (4AMP)₂ ](PF₆ )₂ , (4AMP=4-(aminomethyl)pyridine) is incorporated into polyurea organo- and hydrogels via the reactive amine moieties on the photocleavable 4AMP ligands. While showing long-term stability in the dark, cleavage of the pyridine-ruthenium bond upon irradiation with visible or near-infrared irradiation (in a two-photon process) leads to rapid de-gelation of the supramolecular gels, thus enabling spatiotemporal micropatterning by photomasking or pulsed NIR-laser irradiation.

SUBMITTER: Theis S

PROVIDER: S-EPMC5725706 | biostudies-literature | 2017 Dec

REPOSITORIES: biostudies-literature

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Metallo-Supramolecular Gels that are Photocleavable with Visible and Near-Infrared Irradiation.

Theis Sabrina S Iturmendi Aitziber A Gorsche Christian C Orthofer Marco M Lunzer Markus M Baudis Stefan S Ovsianikov Aleksandr A Liska Robert R Monkowius Uwe U Teasdale Ian I

Angewandte Chemie (International ed. in English) 20171115 50

A photolabile ruthenium-based complex, [Ru(bpy)2 (4AMP)2 ](PF6 )2 , (4AMP=4-(aminomethyl)pyridine) is incorporated into polyurea organo- and hydrogels via the reactive amine moieties on the photocleavable 4AMP ligands. While showing long-term stability in the dark, cleavage of the pyridine-ruthenium bond upon irradiation with visible or near-infrared irradiation (in a two-photon process) leads to rapid de-gelation of the supramolecular gels, thus enabl ...[more]

PMID: 28941025

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