Photochromic Free MOF‐Based Near‐Infrared Optical Switch
Nikita K. Kulachenkov, Dapeng Sun, Yuri A. Mezenov, Andrei N. Yankin, Sergey S. Rzhevskiy, Vyacheslav Dyachuk, Alexandre Nominé, Ghouti Medjahdi, Evgeny A. Pidko, Valentin A. Milichko
Abstract
Abstract We demonstrate herein an all‐optical switch based on stimuli‐responsive and photochromic‐free metal–organic framework (HKUST‐1). Ultrafast near‐infrared laser pulses stimulate a reversible 0.4 eV blue shift of the absorption band with up to 200 s −1 rate due to dehydration and concomitant shrinking of the structure‐forming [Cu 2 C 4 O 8 ] cages of HKUST‐1. Such light‐induced switching enables the remote modulation of intensities of photoluminescence of single crystals of HKUST‐1 as well visible radiation passing through the crystal by 2 order of magnitude. This opens up the possibility of utilyzing stimuli‐responsive MOFs for all‐optical data processing devices.