Squaraine Organic Crystals with Strong Dipole Effect Toward Stable Lithium-Organic Batteries

2021 ◽  
Author(s):  
Yunfei Zu ◽  
Ye Xu ◽  
Lijiao Ma ◽  
Qian Kang ◽  
Jingwen Wang ◽  
...  
Author(s):  
Yunfei Zu ◽  
Ye Xu ◽  
Lijiao Ma ◽  
Qian Kang ◽  
Jingwen Wang ◽  
...  

Author(s):  
E. Knapek ◽  
H. Formanek ◽  
G. Lefranc ◽  
I. Dietrich

A few years ago results on cryoprotection of L-valine were reported, where the values of the critical fluence De i.e, the electron exposure which decreases the intensity of the diffraction reflections by a factor e, amounted to the order of 2000 + 1000 e/nm2. In the meantime a discrepancy arose, since several groups published De values between 100 e/nm2 and 1200 e/nm2 /1 - 4/. This disagreement and particularly the wide spread of the results induced us to investigate more thoroughly the behaviour of organic crystals at very low temperatures during electron irradiation.For this purpose large L-valine crystals with homogenuous thickness were deposited on holey carbon films, thin carbon films or Au-coated holey carbon films. These specimens were cooled down to nearly liquid helium temperature in an electron microscope with a superconducting lens system and irradiated with 200 keU-electrons. The progress of radiation damage under different preparation conditions has been observed with series of electron diffraction patterns and direct images of extinction contours.


Author(s):  
L. N. Demianets ◽  
G. A. Emelchenko ◽  
J. Hesse ◽  
N. Karl ◽  
A. N. Lobachev ◽  
...  
Keyword(s):  

2021 ◽  
Vol 2 (3) ◽  
pp. 100354
Author(s):  
Limin Zhou ◽  
Zihe Zhang ◽  
Lianmeng Cui ◽  
Fangyu Xiong ◽  
Qinyou An ◽  
...  

2021 ◽  
pp. 3287-3306
Author(s):  
Lihong Zhao ◽  
Alae Eddine Lakraychi ◽  
Zhaoyang Chen ◽  
Yanliang Liang ◽  
Yan Yao

2021 ◽  
pp. 129171
Author(s):  
Sensen Zhang ◽  
Zheng Li ◽  
Lirong Cai ◽  
Ying Li ◽  
Vilas G. Pol

2021 ◽  
pp. 2003735
Author(s):  
Vikram Singh ◽  
Jaewook Kim ◽  
Bora Kang ◽  
Joonhee Moon ◽  
Sujung Kim ◽  
...  

2019 ◽  
Vol 19 (2) ◽  
pp. 1288-1298 ◽  
Author(s):  
Anuradha R. Pallipurath ◽  
Jonathan M. Skelton ◽  
Andrea Erxleben ◽  
Patrick McArdle

IAWA Journal ◽  
1996 ◽  
Vol 17 (4) ◽  
pp. 393-403 ◽  
Author(s):  
Yuki Kondo ◽  
Tomoyuki Fujii ◽  
Yoshioki Hayashi ◽  
Atsushi Kato

Organic crystals were found in tracheid lumina of some samples of Torreya yunnanensis Chen ' L. K. Fu imported from Yunnan, China. Tracheids with crystals were found in short to long tangential bands along the growth ring boundaries. Because the crystals were rapidly dissolved with ethanol and xylene, cross and tangential sections were mounted in de-ionized water without staining and observed by biological, polarised light, and phase-contrast microscopy. The crystals were sublimated under vacuum during routine sample preparation for conventional SEM and only the peripheral parts remained. With the aid of low vacuum-SEM and modified cryo-SEM procedure, the shape of the crystals was revealed. Some were styloid and large enough to fill tracheid lumina, while others were stacked appearing as slates filling tracheid lumina. X-ray diffraction applied to sections and isolated crystals showed that they were single crystals and orientated along the cell wall. UV spectra on isolated crystals and methanol dissolution of crystals suggested that they were composed of phenolic compounds. Crystals that were recrystallized from methanol were analysed by 1H and l3C nuclear magnetic resonance spectroscopy. These two techniques revealed that the major and minor components were o-methoxy cinnamic acid and o-methoxy cinnamic aldehyde.


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