2D oriented covalent organic frameworks for alcohol-sensory synapses

Abstract

Resistive random access memories (RRAMs) based on electrochemical metallization mechanism (ECM) have potential applications in high-density data storage and efficient neuromorphic computing. However, the high variability of ECM device still...

Redox‐Active Azulene‐based 2D Conjugated Covalent Organic Framework for Organic Memristors

“…From this figure, one can clearly see that the conductance distributions between the 16 states are non‐overlapping, suggesting the outstanding reliability of multi‐level performance. As one the most important deep neural networks, convolutional neural networks (CNNs) can be employed to perform such tasks as image recognition, object detection, image segmentation and others [27–31] . For this reason, we utilized the 16‐non‐overlapping states as the weight parameters that can be modulated to build a simple memristor‐based CNN for image recognition and achieved an image recognition accuracy of 80 % after 8 epochs of training.…”

Resistive Memory Devices Based on Reticular Materials for Electrical Information Storage

“…Lately, Li et al 78 demonstrated in 2021 a 2D COF-based synaptic system fabricated with a sandwiched oriented 2D COF-5 between ITO and Ag electrodes (Ag/COF-5/ITO) (Figure 12a). The aligned 2D COF-5 opened its 1D porous channels out-of-plane between the two electrodes of ITO and Ag, which efficiently transferred Ag + cations and alcohol vapors rapidly.…”

“…Thus, the research has been enthusiastically exploited to develop novel emulated human recognition systems with oxides, , phase change materials, , polymers, and perovskites from a decade ago. Recently, Li et al first reported successful mimicking the human nervous system of alcohol inhibition stimulation with 2D COFs in 2021; yet, that is only one published research article related to reticular materials-based memristors exhibiting synaptic plasticity. Thus, we will introduce the analog-type memristive system based on the reticular materials, but reticular materials-based RRAMs for high-density electrical information storage will be mostly focused on in this review.…”

“…(f) Real-time PSC responses of the Ag/COF-5/ITO device under 1000 ppm methanol. Reproduced with permission from ref . Copyright Royal Chemical Society 2021.…”

Photoresponse of CVD grown crystalline quantum dot-embedded covalent organic framework thin film

“…This has opened new horizons for the exploration and innovation of new 2D materials. Covalent organic frameworks (COF) are novel smart materials with well-dened and adjustable porosity, 1 large surface area, intrinsic crystalline framework, high thermal stabilities, 2 conductive 3 /semiconductive properties, and ease of modifying the chemical structure, which has attracted intense attention in various applications ranging from gas adsorption/ separation, 4,5 energy storage, 6,7 advanced sensing, [8][9][10][11][12][13] semiconductive device, [14][15][16][17][18] biological applications, [19][20][21][22] photocatalysis 23,24 etc. These materials have p-electronic blocks covalently bonded and arranged in periodic planar networks stacked in layered 2 or 3-dimensional (2D or 3D) network structures with atomic precision.…”