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To obtain precisely controllable, robust as well as reproduceable memristorfor efficient neuromorphic computing still very challenging. Moleculartailoring aims at obtaining the much more flexibly tuning plasticity hasrecently generated significant interest as new paradigms toward the realizationof novel memristor-based synapses. Herein, inspired by the deliberate oxygentransport carried by the hemoglobin in our blood circulation, we report a novelmolecular-regulated electronic/ionic semiconducting (MEIS) platformITO/MTPP/Al2O3-x/Al with a series of metallophorphyrins (MTPPs) to delicatelyregulate the ionic migration for robust molecular multimedia memristors. Thestable pinched hysteresis resulted from the coordination-regulated ionicmigration was verified by different device structures, operation modes, as wellas the characterizations of scanning transmission electron microscopy withenergy-dispersive X-ray spectroscopy (STEM-EDX) and X-ray photoelectronspectroscopy (XPS). Metal coordination-dependent device parameters such aspotential and depression as well as retention curves further support thecorrelation between the coordination and stimulating flux-dependent memristivebehaviors. In the 5,10,15,20-tetraphenyl-21H,23H-porphyrin zinc(II) (ZnTPP)synapse, we implement versatile emulations, mainly including transition fromshort-term memory (STM) to long-term-memory (LTM), learning experience andactivity-dependent learning-memory process in integrated neuromorphicconfigurations based on the biological Hebbian rules, and develop the freshSpike-Amplitude-Dependent-Plasticity (SADP) with the applications of signalfiltering and habituation and sensitization which are beyond the prevalentHebbian rules.

Filtering Signal Processes in Molecular Multimedia Memristors