Construction of polymer materials with specific responses to violet and green lights and their potential applications in an artificial visual memory system

Wang, Guan; Li, Hua; Zhang, Qijian; Zhu, Fengfeng; Yuan, Junwei; Wang, Yuxiang; Lu, Jianmei

doi:10.1039/d1tc04803a

Cited by 6 publications

(2 citation statements)

References 51 publications

(48 reference statements)

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“…Thus, we denote this memristive behavior as WORM performance. [ 28‐29 ] More importantly, different from the binary WORM performance that the NIPy‐based device has, the CoNIPy‐based memristive device exhibits two abrupt increases in the current at –1.7 V and –4.2 V, indicating ternary electrical stable states of OFF, ON1 and ON2 states. All these results confirm the variable learning‐memory behavior from π‐conjugate ligand to Co(II) complex‐based memristive device.…”

Section: Resultsmentioning

confidence: 99%

Variable Learning‐Memory Behavior from π‐Conjugated Ligand to Ligand‐Containing Cobalt(II) Complex^†

et al. 2022

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Comprehensive Summary In the information‐explosion era, developing novel algorithms and memristive devices has become a promising concept for next‐generation capacity enlargement technology. Organic small molecule‐based devices displaying superior learning‐memory performance have attracted much attention, except for the existence of poor heat‐resilience and mediocre conductivity. In this paper, a strategy of transforming an organic‐type data‐storage material to metal complex is proposed to resolve these intrinsic issues. A pristine NDI‐derivative (NIPy) and its corresponding Co(II) complex (CoNIPy) are synthesized for the purpose of electrical property investigation. CoNIPy complex‐based memristive device exhibits superior ternary WORM memory performance compared with the binary behavior of NIPy, including >104 s of reading, lower threshold voltage (Vth), 1: 102: 105 of OFF/ON1/ON2 current ratio, and long‐term stability in heating environment. The variable learning‐memory behavior can be attributed to the enhanced ligand‐to‐metal charge transfer (LMCT) and improved redox activity after the introduction of central metal atom and coordination bond. These studies on material innovation and optimal performance are of great importance not only for environmentally‐robust memristive devices but also for practical application of a host of organic electronic devices.

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Section: Resultsmentioning

confidence: 99%

Variable Learning‐Memory Behavior from π‐Conjugated Ligand to Ligand‐Containing Cobalt(II) Complex^†

et al. 2022

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“…gases, fluorescent labels), 4 manufacturing (e.g. 3D printing, lithography), [5][6][7] and other applications [8][9][10] (Figure 1). For instance, over $40 billion was spent on water infrastructure in the United States during 2020, yet there are still 16 million acute gastroenteritis cases due to poor quality drinking water each year.…”

Section: Introductionmentioning

confidence: 99%

Water Additives Improve the Efficiency of Violet Perovskite Light-Emitting Diodes

Fernández

Zhou

et al. 2022

Preprint

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Over the past few years, high external quantum efficiencies (EQE) have been achieved for blue, green, red, and near infrared perovskite light-emitting diodes (PeLEDs), and their energy efficiencies are approaching the efficiencies of III-V based LEDs. Beyond the visible regime, ultraviolet light offers great promise for many applications such as disinfection, which has become increasingly important since the COVID-19 pandemic. However, PeLEDs demonstrate poor performance in the violet/ultraviolet region, with reports of violet PeLED performance hindered by poor thin film quality. In this work, we improve the uniformity of perovskite film by adding water into the precursor solution to engineer the crystallization process of spin-coated 2D perovskite. The PeLEDs deliver bright violet emission at 408 nm, with a maximum external quantum efficiency of 0.41%, a fivefold increase over control devices. This work demonstrates viable steps towards cost-effective, efficient ultraviolet PeLEDs.

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Construction of Perylene‐based Amphiphilic Micelle and Its Efficient Adsorption and In Situ Photodegradation of Bisphenol A in Aqueous Solution

Wang

et al. 2022

Angewandte Chemie

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Low mass-transfer efficiency and reactiondriving force make it difficult to realize thorough purification in traditional low-concentration pollutant treatments. Herein, we propose an "adsorption/catalysis in situ" perylene based bifunctional micelle for efficient, accurate and rapid adsorption and catalytic degradation of low-concentration bisphenol A (BPA). They show super-fast (within 10 s), high capacity (448 mg g À 1 ) and selectivity for BPA adsorption, due to π-π, hydrophobic interactions and hydrogen bonding. The BPA degradation efficiency improves by up to 8 times after forming micelles compared with simple perylene nanorods, which is primarily due to the superior mass-transfer from adsorption. Moreover, self-assembly can optimize the stacking of the perylene moieties and facilitate charge transfer in micelle, and the regular π-π stacking of inside perylene units enhances the response to visible light, resulting in high catalytic capacity and good cycling stability.

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Construction of polymer materials with specific responses to violet and green lights and their potential applications in an artificial visual memory system

Abstract: Artificial retinal materials play an important role in vision repair and robotics. However, the inability to convert characteristic visible light signals into electrical signals has seriously hindered the development and...

Cited by 6 publications

References 51 publications

Variable Learning‐Memory Behavior from π‐Conjugated Ligand to Ligand‐Containing Cobalt(II) Complex^†

Variable Learning‐Memory Behavior from π‐Conjugated Ligand to Ligand‐Containing Cobalt(II) Complex^†

Water Additives Improve the Efficiency of Violet Perovskite Light-Emitting Diodes

Construction of Perylene‐based Amphiphilic Micelle and Its Efficient Adsorption and In Situ Photodegradation of Bisphenol A in Aqueous Solution

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Construction of polymer materials with specific responses to violet and green lights and their potential applications in an artificial visual memory system

Abstract: Artificial retinal materials play an important role in vision repair and robotics. However, the inability to convert characteristic visible light signals into electrical signals has seriously hindered the development and...

Cited by 6 publications

References 51 publications

Variable Learning‐Memory Behavior from π‐Conjugated Ligand to Ligand‐Containing Cobalt(II) Complex†

Variable Learning‐Memory Behavior from π‐Conjugated Ligand to Ligand‐Containing Cobalt(II) Complex†

Water Additives Improve the Efficiency of Violet Perovskite Light-Emitting Diodes

Construction of Perylene‐based Amphiphilic Micelle and Its Efficient Adsorption and In Situ Photodegradation of Bisphenol A in Aqueous Solution

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Product

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Variable Learning‐Memory Behavior from π‐Conjugated Ligand to Ligand‐Containing Cobalt(II) Complex^†

Variable Learning‐Memory Behavior from π‐Conjugated Ligand to Ligand‐Containing Cobalt(II) Complex^†