Controllable Growth of Centimeter-Scale 2D Crystalline Conjugated Polymers for Photonic Synaptic Transistors

Author(s):  
Qing Zhang ◽  
Xin Ye ◽  
Yue Zheng ◽  
Yongshuai Wang ◽  
Lin Li ◽  
...  

Two-dimensional (2D) crystals of conjugated polymers (2DCCPs) have attracted numerous attentions in past few decades due to their superior and intriguing optoelectronic properties. With the rise of brain-inspired neuromorphic computing,...

2019 ◽  
Vol 25 (26) ◽  
pp. 6562-6568 ◽  
Author(s):  
Daniel Becker ◽  
Bishnu P. Biswal ◽  
Paula Kaleńczuk ◽  
Naisa Chandrasekhar ◽  
Lars Giebeler ◽  
...  

Nanoscale ◽  
2020 ◽  
Vol 12 (2) ◽  
pp. 1100-1108 ◽  
Author(s):  
Yu Bai ◽  
Haixin Zhang ◽  
Mingjing Zhang ◽  
Di Wang ◽  
Hui Zeng ◽  
...  

A bottom-up route to fabricate molecularly thin CH3NH3PbX3 (X = Cl, Br, I) perovskite 2D crystals has been discovered and is very promising for superior new optoelectronic devices.


2019 ◽  
Vol 16 (3) ◽  
pp. 253-260 ◽  
Author(s):  
Jieyun Wu ◽  
Qing Li ◽  
Wen Wang ◽  
Kaixin Chen

Organic conjugated materials have shown attractive applications due to their good optoelectronic properties, which enable them solution processing techniques in organic optoelectronic devices. Many conjugated materials have been investigated in polymer solar cells and organic field-effect transistors. Among those conjugated materials, Benzo[1,2-b:4,5-b′]dithiophene (BDT) is one of the most employed fused-ring building groups for the synthesis of conjugated materials. The symmetric and planar conjugated structure, tight and regular stacking of BDT can be expected to exhibit the excellent carrier transfer for optoelectronics. In this review, we summarize the recent progress of BDT-based conjugated polymers in optoelectronic devices. BDT-based conjugated materials are classified into onedimensional (1D) and two-dimensional (2D) BDT-based conjugated polymers. Firstly, we introduce the fundamental information of BDT-based conjugated materials and their application in optoelectronic devices. Secondly, the design and synthesis of alkyl, alkoxy and aryl-substituted BDT-based conjugated polymers are discussed, which enables the construction of one-dimensional and two-dimensional BDTbased conjugated system. In the third part, the structure modification, energy level tuning and morphology control and their influences on optoelectronic properties are discussed in detail to reveal the structure- property relationship. Overall, we hope this review can be a good reference for the molecular design of BDT-based semiconductor materials in optoelectronic devices.


Author(s):  
Jeffry A. Reidler ◽  
John P. Robinson

We have prepared two-dimensional (2D) crystals of tetanus toxin using procedures developed by Uzgiris and Kornberg for the directed production of 2D crystals of monoclonal antibodies at an antigen-phospholipid monolayer interface. The tetanus toxin crystals were formed using a small mole fraction of the natural receptor, GT1, incorporated into phosphatidyl choline monolayers. The crystals formed at low concentration overnight. Two dimensional crystals of this type are particularly useful for structure determination using electron microscopy and computer image refinement. Three dimensional (3D) structural information can be derived from these crystals by computer reconstruction of photographs of toxin crystals taken at different tilt angles. Such 3D reconstructions may help elucidate the mechanism of entry of the enzymatic subunit of toxins into cells, particularly since these crystals form directly on a membrane interface at similar concentrations of ganglioside GT1 to the natural cellular receptors.


Nanoscale ◽  
2015 ◽  
Vol 7 (16) ◽  
pp. 7402-7408 ◽  
Author(s):  
Long Yuan ◽  
Libai Huang

We systematically investigate the exciton dynamics in monolayered, bilayered, and trilayered WS2 two-dimensional (2D) crystals by time-resolved photoluminescence (TRPL) spectroscopy.


2021 ◽  
pp. 413070
Author(s):  
Meiping Liu ◽  
Yong Tang ◽  
Xiangli Zhong ◽  
Zheng Li ◽  
Yingtang Zhou ◽  
...  

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