Two‐Dimensional Metal‐Organic Framework Film for Realizing Optoelectronic Synaptic Plasticity

Liu, Youxing; Wei, Yanan; Liu, Minghui; Bai, Yong; Liu, Guocai; Wang, Xinyu; Shang, Shengcong; Gao, Wenqiang; Du, Changsheng; Chen, Jianyi; Liu, Yunqi

doi:10.1002/ange.202106519

Cited by 6 publications

(1 citation statement)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The light response range of photonic synapses is dependent on the active materials. At present, various materials, including perovskites, [7] metal oxides, [8] two‐dimensional materials, [9] organic semiconductors, [10] and biomaterials, [11] have been employed to construct photonic synapses. Among them, organic semiconductors have great potential due to their advantages of easily tunable light absorption range, solution processability, low‐cost manufacturing, high robustness in their mechanical flexibility, and biocompatibility [4b, 12] .…”

Section: Introductionmentioning

confidence: 99%

Retina‐Inspired Organic Photonic Synapses for Selective Detection of SWIR Light

et al. 2022

Self Cite

View full text Add to dashboard Cite

Photonic synapses with the dual function of optical signal detection and information processing can simulate human visual system. However, photonic synapses with selective detection of short-wavelength infrared (SWIR) light have never been reported, which can not only broaden the human vision region but also integrate neuromorphic computation and infrared optical communication. Here, organic photonic synapses based on a new donor-acceptor copolymer P1 are fabricated, which exhibit excellent synaptic characteristics with selective detection for SWIR and extremely low energy consumption (2.85 fJ). The working mechanism is rooted in energy level barriers and unbalanced charge transportation. Moreover, these photonic synapses demonstrate excellent performance in multi-signal logic editing, letter imaging and memory with noise reduction function. This contribution provides ideas of constructing selective-response synapses for artificial visual system and neuromorphic computing.

show abstract

Section: Introductionmentioning

confidence: 99%

Retina‐Inspired Organic Photonic Synapses for Selective Detection of SWIR Light

et al. 2022

Self Cite

View full text Add to dashboard Cite

show abstract

Near‐Equilibrium Growth of Chemically Stable Covalent Organic Framework/Graphene Oxide Hybrid Materials for the Hydrogen Evolution Reaction

et al. 2021

View full text Add to dashboard Cite

Facile synthesis and post‐processing of covalent organic frameworks (COFs) under mild synthetic conditions are highly sought after and important for widespread utilizations in catalysis and energy storage. Here we report the synthesis of the chemically stable aza‐fused COFs BPT‐COF and PT‐COF by a liquid‐phase method. The process involves the spontaneous polycondensation of vicinal diamines and vicinal diketones, and is driven by the near‐equilibrium growth of COF domains at a very low monomer concentration. The method permits in situ assembly of COFs and COF‐GO hybrid materials and leads to the formation of a uniform conducting film on arbitrary substrates on vacuum filtration. When used as electrocatalysts, the as‐prepared membranes show a fast hydrogen evolution reaction (HER) with a low overpotential (45 mV at 10 mA cm−2) and a small Tafel slope (53 mV dec−1), which are the best among metal‐free catalysts. Our results may open a new route towards the preparation of highly π‐conjugated COFs for multifunctional applications.

show abstract

Maximized Green Photoluminescence in Tb‐Based Metal–Organic Framework via Pressure‐Treated Engineering

et al. 2022

View full text Add to dashboard Cite

Lanthanide metal-organic frameworks are of great interest in the development of photoluminescence (PL) materials owing to their structural tunability and intrinsic features of lanthanide elements. However, there exists some limitations arising from poor matching with metal ions, thereby exhibiting a weak ligand-tometal energy transfer (LMET) process. Here we demonstrate a pressure-treated strategy for achieving high PL performance in green-emitting Tb(BTC)(H 2 O) 6 . The PL quantum yield of pressure-treated sample increased from 50.6 % to 90.4 %. We found that the enhanced hydrogen bonds locked the conjugated configuration formed by two planes of carboxyl group and benzene ring, enabling the promoted intersystem crossing to effectively drive LMET. Moreover, the optimized singlet and triplet states also validated the facilitated LMET process. This work opens the opportunity of structure optimization to improve PL performance in MOFs by pressure-treated engineering.

show abstract

Two‐Dimensional Metal‐Organic Framework Film for Realizing Optoelectronic Synaptic Plasticity

Cited by 6 publications

References 35 publications

Retina‐Inspired Organic Photonic Synapses for Selective Detection of SWIR Light

Retina‐Inspired Organic Photonic Synapses for Selective Detection of SWIR Light

Near‐Equilibrium Growth of Chemically Stable Covalent Organic Framework/Graphene Oxide Hybrid Materials for the Hydrogen Evolution Reaction

Maximized Green Photoluminescence in Tb‐Based Metal–Organic Framework via Pressure‐Treated Engineering

Contact Info

Product

Resources

About