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 [Cu2C4O8] 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.

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Data storage, processing, and communications are the backbone of the digital world and focus the innovation efforts of the microelectronics industry. Recent raw material shortages, however, have revealed the danger of sourcing for the digital industry. At a time of a significant increase in demand for data storage systems, it is urgent to consider the sustainability of the resources used for devices. By diluting inorganic elements in an organic matrix, metal-organic frameworks (MOFs) are of substantial interest for sustainable technologies. Moreover, they have shown great potential as active materials for electronic, optical, and magnetic memory devices, paving the way to accessible, sustainable, and recyclable microelectronic devices. Based on the number of fundamental studies of the bistability of MOFs, their scalability, recyclability, and low energy consumption, MOFs are highlighted as sustainable materials for a new generation of memristive devices. Finally, considering the "green" chemistry of specific MOF, their flexibility, as well as the market of microelectronics and mineral consumption, the future development of MOF-based memory devices and socio-economic profits from their utilization is predicted.

The preparative electrosynthetic procedure for gram‐scale preparation of symmetric 4,4′‐dihydroxy‐3,3′‐diformylbiphenyls from salicylic aldehydes via the intermediate formation of ethylene‐bridged bis((2‐hydroxybenzylidene)imino)nickel (II) complexes is reported for the first time. This procedure represents a practical route to the variety of rare bisphenol derivatives. The electrochemical aryl‐aryl coupling via an oxidative CH – activation in NiSalens is exploited for facile and selective C−C bond formation.