High fatigue resistance of a photochromic dithienylethene embedded into the pores of a metal–organic framework (MOF)

Abstract

The incorporation of photochromic dyes into porous metal–organic frameworks (MOFs) is an attractive way to transfer the photochromic properties of the dye to a solid crystalline material.

Fundamental Study of the Optical and Vibrational Properties of Fx-AZB@MOF systems as Functions of Dye Substitution and the Loading Amount

“…The composition of the obtained F8-AZB x @DMOF-1 systems was performed via liquid-state NMR spectroscopy following the procedure previously described for diarylethenes, 11 , 12 spirooxazines, 17 spiropyrans, 16 F4-AZB, 9 and fulgides 18 inside different MOF hosts. For this, the respective compound was digested in DMSO- d 6 and DCl.…”

A photoprogrammable electronic nose with switchable selectivity for VOCs using MOF films

“…We are convinced that such photoprogrammable active sensing materials can also be applied in other sensor setups, in particular in applications where MOFs are already found. 23,24,78,79 While the focus of our work has been on azobenzenes, the concept can also be applied to MOF lms with other photoresponsive groups such as spiropyrans, 80,81 diarylethenes 82,83 or fulgides. 84 In addition to reversible photoisomerization, irreversible light-induced processes in MOFs can also be used.…”

Efficient solid-state photoswitching of methoxyazobenzene in a metal–organic framework for thermal energy storage

“…10 Recently, connement within metal-organic frameworks (MOFs) has been shown as an effective way to impart conformational freedom to photoswitches within bulk solid materials. Using this approach, solid-state photoswitching has been demonstrated for AB derivatives [13][14][15][16][17][18][19][20][21][22] as well as other molecules including dithienylethenes, [23][24][25][26][27] 2-phenylazopyridine, 28 and spiropyrans. [29][30][31][32][33][34][35] In addition to spatial considerations, another requirement for solid-state MOST materials is to ensure a high degree of photoconversion to the metastable state.…”

“…10 Recently, confinement within metal–organic frameworks (MOFs) has been shown as an effective way to impart conformational freedom to photoswitches within bulk solid materials. Using this approach, solid-state photoswitching has been demonstrated for AB derivatives 13–22 as well as other molecules including dithienylethenes, 23–27 2-phenylazopyridine, 28 and spiropyrans. 29–35…”