Photochromic Free MOF‐Based Near‐Infrared Optical Switch. (4th June 2020)

• Record Type: Journal Article
• Authors: Kulachenkov, Nikita K.; Sun, Dapeng; Mezenov, Yuri A.; Yankin, Andrei N.; Rzhevskiy, Sergey; Dyachuk, Vyacheslav; Nominé, Alexandre; Medjahdi, Ghouti; Pidko, Evgeny A.; Milichko, Valentin A.
• Is Part Of: Angewandte Chemie. Volume 132:Number 36(2020)
• Page Start: 15652
• Page End: 15656
• Publication Date: 2020-06-04
• Subjects: all-optical switch -- HKUST-1 -- metal–organic frameworks -- photoswitching; Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.202004293
• Languages: English
• ISSNs: 0044-8249

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 [Cu2 C4 O8 ] 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. Abstract : Ultrafast near‐infrared laser pulses stimulate reversible blue shift of the absorption band of photochromic‐free MOFs with rates up to hundreds of s −1 . This optical switching can be applied for MOF‐based communication devicesallowing the remote modulation of the intensities of initial photoluminescence and the visible light passing through the MOFs.