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Novel Photoactive Spirooxazine Based Switch@MOF Composite Materials
Author(s) -
Schwartz Heidi A.,
Werker Melanie,
Tobeck Christian,
Christoffels Ronja,
Schaniel Dominik,
Olthof Selina,
Meerholz Klaus,
Kopacka Holger,
Huppertz Hubert,
Ruschewitz Uwe
Publication year - 2020
Publication title -
chemphotochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.13
H-Index - 18
ISSN - 2367-0932
DOI - 10.1002/cptc.201900193
Subject(s) - photochromism , materials science , composite number , molecule , metal organic framework , porosity , hybrid material , absorption (acoustics) , smart material , photonics , optoelectronics , nanotechnology , chemical engineering , composite material , chemistry , organic chemistry , adsorption , engineering
Molecules, which reversibly transform between two structural configurations upon excitation with electromagnetic radiation, are attractive candidates for the design of smart materials e. g. memory devices. A possible approach for the development of such smart materials is the construction of hybrid systems that contain these photochromic molecules as well as a porous host matrix, which enables their switching process in the solid state. We herein present the first light‐responsive materials consisting of the photoswitchable spirooxazine 1,3,3‐trimethyl indolinonaphthospirooxazine (SP−O) and crystalline porous MOF (metal–organic framework) hosts, namely MOF‐5, MIL‐68(In), MIL‐68(Ga), and MIL‐53(Al), which were combined to form hybrid SP−O@MOF composites. These systems show a reversible photochromic response and host‐dependent absorption maxima of the incorporated guest molecules. Most remarkably, SP−O is extremely photostable upon repetitive and prolonged UV light exposure especially inside MOF‐5, making these composite materials attractive candidates for potential applications in data storage devices.