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Metallo‐Supramolecular Gels that are Photocleavable with Visible and Near‐Infrared Irradiation
Author(s) -
Theis Sabrina,
Iturmendi Aitziber,
Gorsche Christian,
Orthofer Marco,
Lunzer Markus,
Baudis Stefan,
Ovsianikov Aleksandr,
Liska Robert,
Monkowius Uwe,
Teasdale Ian
Publication year - 2017
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201707321
Subject(s) - ruthenium , chemistry , irradiation , photochemistry , pyridine , supramolecular chemistry , amine gas treating , self healing hydrogels , raman spectroscopy , polymer chemistry , organic chemistry , molecule , catalysis , physics , nuclear physics , optics
A photolabile ruthenium‐based complex, [Ru(bpy) 2 (4AMP) 2 ](PF 6 ) 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