On-surface synthesis of one-type pore single-crystal porous covalent organic frameworks

2019 ◽  
Vol 55 (72) ◽  
pp. 10800-10803
Author(s):  
Zhenliang Hao ◽  
Lingling Song ◽  
Cuixia Yan ◽  
Hui Zhang ◽  
Zilin Ruan ◽  
...  
Keyword(s):  
Single Crystal ◽  
Large Scale ◽  
Single Layer ◽  
Covalent Organic Frameworks

A 1,3,5-tris(4-bromophenyl)benzene precursor was employed to fabricate large-scale, one-type pore and single-layer pCOFs on the Ag(111) surface in a controllable manner.

Single-Layer MoS2 Grown on Atomically Flat SrTiO3 Single Crystal for Enhanced Trionic Luminescence

ACS Nano ◽  
2021 ◽  
Author(s):  
Chenxi Huang ◽  
Jun Fu ◽  
Miaomiao Xiang ◽  
Jiefu Zhang ◽  
Hualing Zeng ◽  
...  
Keyword(s):  
Single Crystal ◽  
Single Layer ◽  
Atomically Flat

scholarly journals Fast synthesis of large-scale single-crystal graphene with well-defined edges upon sodium chloride addition

Carbon ◽  
2020 ◽  
Vol 158 ◽  
pp. 904-911 ◽  
Author(s):  
Su Han Kim ◽  
Jie Jiang ◽  
Suhee Jang ◽  
Jae Hyung Lee ◽  
Dong Won Yang ◽  
...  
Keyword(s):  
Sodium Chloride ◽  
Single Crystal ◽  
Large Scale ◽  
Fast Synthesis

scholarly journals Nanotransfer Printing: Inkjet-Assisted Nanotransfer Printing for Large-Scale Integrated Nanopatterns of Various Single-Crystal Organic Materials (Adv. Mater. 15/2016)

2016 ◽  
Vol 28 (15) ◽  
pp. 2846-2846
Author(s):  
Kyung Sun Park ◽  
Jangmi Baek ◽  
Yoonkyung Park ◽  
Lynn Lee ◽  
Yong-Eun Koo Lee ◽  
...  
Keyword(s):  
Single Crystal ◽  
Large Scale ◽  
Organic Materials

Large-scale synthesis of single-crystal molybdenum trioxide nanobelts by hot-wire chemical vapour deposition

2015 ◽  
Vol 619 ◽  
pp. 406-410 ◽  
Author(s):  
Jianjun Chen ◽  
Mingming Wang ◽  
Xin Liao ◽  
Zhaoxiang Liu ◽  
Judong Zhang ◽  
...  
Keyword(s):  
Single Crystal ◽  
Chemical Vapour Deposition ◽  
Large Scale ◽  
Vapour Deposition ◽  
Molybdenum Trioxide ◽  
Chemical Vapour ◽  
Hot Wire ◽  
Large Scale Synthesis

scholarly journals Temperature-Dependent Raman Scattering of Large Size Hexagonal Bi2Se3 Single-Crystal Nanoplates

2018 ◽  
Vol 8 (10) ◽  
pp. 1794 ◽  
Author(s):  
Fang Zhou ◽  
Yujing Zhao ◽  
Weichang Zhou ◽  
Dongsheng Tang
Keyword(s):  
Electron Microscope ◽  
Single Crystal ◽  
Temperature Coefficient ◽  
Thermoelectric Materials ◽  
Large Scale ◽  
X Ray Diffraction ◽  
Temperature Dependent ◽  
Large Size ◽  
Transmission Electron ◽  
High Figure

Bi 2 Se 3 has extensive application as thermoelectric materials. Here, large-scale Bi 2 Se 3 single-crystal hexagonal nanoplates with size 7.50–10.0 μ m were synthesized successfully by hydrothermal method. X-ray diffraction (XRD), scanning electron microscope (SEM), and transmission electron microscope (TEM) were used to characterize the Bi 2 Se 3 nanoplates, which confirm the single-crystal quality and smooth surface morphology with large size. Micro-Raman spectra over a temperature range of 83–603 K were furthermore used to investigate the lattice dynamics of Bi 2 Se 3 nanoplates. Both 2A g 1 and 1E g 2 modes shift evidently with reduced temperature. The line shape demonstrates a significant broadening of full width at half maximum (FWHM) and red-shift of frequency with increased temperature. The temperature coefficient of A 1 g 1 , E g 2 , A 1 g 2 modes were determined to be −1.258 × 10 − 2 cm − 1 /K, −1.385 × 10 − 2 cm − 1 /K, −2.363 × 10 − 2 cm − 1 /K, respectively. Such low temperature coefficient may favor the obtaining of a high figure of merit (ZT) and indicate that Bi 2 Se 3 nanoplates were used as excellent candidates of thermoelectric materials.

scholarly journals Controlled direct synthesis of single- to multiple-layer MWW zeolite

2020 ◽  
Author(s):  
Jie-Qiong Chen ◽  
Yu-Zhao Li ◽  
Qing-Qing Hao ◽  
Huiyong Chen ◽  
Zhao-Tie Liu ◽  
...  
Keyword(s):  
Large Scale ◽  
Direct Synthesis ◽  
Single Layer ◽  
Strong Acid ◽  
Acid Sites ◽  
Synthesis Conditions ◽  
Alkylation Of Benzene ◽  
Controlled Structure ◽  
Strong Acid Sites ◽  
Mww Zeolite

ABSTRACT The minimized diffusion limitation and completely exposed strong acid sites of the ultrathin zeolites make it an industrially important catalyst especially for converting bulky molecules. However, the structure-controlled and large-scale synthesis of the material is still a challenge. In this work, the direct synthesis of the single-layer MWW zeolite was demonstrated by using hexamethyleneimine and amphiphilic organosilane as structure-directing agents. Characterization results confirmed the formation of the single-layer MWW zeolite with high crystallinity and excellent thermal/hydrothermal stability. The formation mechanism was rigorously revealed as the balanced rates between the nucleation/growth of the MWW nanocrystals and the incorporation of the organosilane into the MWW unit cell, which is further supported by the formation of MWW nanosheets with tunable thickness via simply changing synthesis conditions. The commercially available reagents, well-controlled structure and the high catalytic stability for the alkylation of benzene with 1-dodecene make it an industrially important catalyst.

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