No abstract

The development of new-type memristors with special performance is of great interest. Herein, an inorganicorganic hybrid crystalline polyoxometalate (POM) with usual dynamic structures is reported and used as active material for fabricating memristor with unique temperature-regulated resistive switching behaviors. The hybrid POM not only exhibits tunable thermochromic properties, but also thermalinduced reversible aggregation and disaggregation reactions, leading to reversible structural transformations in SCSC fashion. Further, the memory device using the hybrid POM as active layer exhibits uncommon performance, which can keep resistive switching silent in the low temperature range of 30-150 8C, but show nonvolatile memory behavior in the high temperature range of 150-270 8C. Particularly, the silent and working states at three special temperatures (30, 150 and 270 8C) can be monitored by chromism. The correlation between structure and resistive switching property of the material has been discussed. The work demonstrates that crystalline inorganic-organic hybrid POMs are promising materials for making memristors with superior performance.Memristors are leading candidates for the next generation non-volatile memory devices owing to their low power consumption, high access speed, multi-state switching and device scalability. [1][2][3][4][5][6][7] The development of memristors with high performance and reliability under special/harsh environments is in great demand so that they can be applied in many promising fields, such as aerospace, geothermal, oil and gas industries. [8] In the past few decades, great efforts have been paid to improve the switching performance of memristors at high temperatures because the working mechanisms of memory devices, including filamentary conduction, space charge trapping, valence and conformation changes and

Die direkte Kombination von {Ni6PW9}‐Baugruppen mit starren Carboxylatbrücken unter Hydrothermalbedingungen führt zu Polyoxometallat‐organischen Netzwerken (POMOFs) mit 1D‐, 2D‐ und 3D‐Strukturen auf der Grundlage von Monomeren, Dimeren oder helikalen Ketten (siehe Bild einer 3D‐Struktur; WO6 rot, NiO6 grün, PO4 gelb, 1,2,4‐Benzoltricarboxylat gold).

A Ni12-substituted POM and a Ni6-substituted POM have been synthesized and characterized. The compounds show a moderate catalytic activity in visible-light-driven CO2 reduction reactions, and can serve as potential proton conduction materials.