Results 121 to 130 of about 2,064,816 (279)

Synthesis, Electronic Properties, and X-ray Structural Characterization of Tetrarylbenzo[1,2-\u3cem\u3eb\u3c/em\u3e:4,5-\u3cem\u3eb\u3c/em\u3e′]difuran Cation Radicals [PDF]

, 2008
Electroactive tetraarylbenzo[1,2-b:4,5-b′]difuran (BDF) and model diarylbenzofuran derivatives are synthesized and their structures are established by X-ray crystallography.
Lindeman, Sergey V., Rathore, Rajendra, Shukla, Ruchi, Wadumethrige, Shriya   +3 more
core   +1 more source

Crystal structure of CO-bound cytochrome c oxidase determined by serial femtosecond X-ray crystallography at room temperature

Proceedings of the National Academy of Sciences of the United States of America, 2017
Significance A fundamental bioenergetics question is how the redox energy from oxygen reduction in cytochrome c oxidase (CcO) is coupled to proton translocation.
I. Ishigami, N. Zatsepin, Masahide Hikita, C. Conrad, G. Nelson, J. Coe, S. Basu, T. Grant, M. Seaberg, R. Sierra, M. Hunter, P. Fromme, R. Fromme, S. Yeh, D. Rousseau   +14 more
semanticscholar   +1 more source

Single‐Crystal Organic Field‐Effect Transistors Based on 5,15‐Bisaryl‐Tetrabenzoporphyrins: Synthesis, Structure, and Charge Transport Properties

Advanced Materials Interfaces, EarlyView.
This study explores single‐crystal organic field‐effect transistors (SC‐OFETs) based on 5,15‐bisaryl‐tetrabenzoporphyrin derivatives. It highlights the impact of meso‐substituted groups on molecular packing and charge transport. Among the derivatives, C8Ph‐BP achieves the highest hole mobility (1.64 cm2 V−¹ s−¹) due to enhanced π‐stacking with ...
Kazuya Miyazaki, Kento Teranishi, Hiroshi Matsuda, Kyohei Matsuo, Mitsuaki Yamauchi, Yoshiyuki Mizuhata, Nobutaka Shioya, Takeshi Hasegawa, Hiroko Yamada   +8 more
wiley   +1 more source

Challenging nickel-catalysed amine arylations enabled by tailored ancillary ligand design

Nature Communications, 2016
The development of highly effective Earth-abundant catalysts for C(sp2)-N cross-coupling represents an on-going challenge in synthetic chemistry.
Christopher M. Lavoie, Preston M. MacQueen, Nicolas L. Rotta-Loria, Ryan S. Sawatzky, Andrey Borzenko, Alicia J. Chisholm, Breanna K. V. Hargreaves, Robert McDonald, Michael J. Ferguson, Mark Stradiotto   +9 more
doaj   +1 more source

Quantum crystallographic charge density of urea [PDF]

arXiv, 2015
Standard X-ray crystallography methods use free-atom models to calculate mean unit cell charge densities. Real molecules, however, have shared charge that is not captured accurately using free-atom models. To address this limitation, a charge density model of crystalline urea was calculated using high-level quantum theory and was refined against ...
arxiv  

Structure of a photosynthetic reaction centre determined by serial femtosecond crystallography [PDF]

, 2013
Serial femtosecond crystallography is an X-ray free-electron-laser-based method with considerable potential to have an impact on challenging problems in structural biology.
Aquila A., Arnlund D., Barty A., Bogan M. J., Boutet S., Caleman C., Chapman H. N., Davidsson J., Deponte D. P., Doak R. B., Frank M., Fromme P., Fromme R., Galli L., Grotjohann I., Hunter M. S., Johansson L. C., Kassemeyer S., Katona G., Kirian R. A., Kupitz C., Liang M., Lomb L., Malmerberg E., Martin A. V., Messerschmidt M., Nass K., Neutze R., Redecke L., Schlichting I., Seibert M. M., Sharma A., Shoeman R. L., Sjohamn J., Spence J. C. H., Steinbrener J., Stellato F., Wahlgren W. Y., Wang D., Weierstall U., Westenhoff S., White T. A., Wickstrand C., Williams G. J., Zatsepin N. A.   +44 more
core   +1 more source

Radiation damage in protein crystallography at X-ray free-electron lasers

Acta Crystallographica Section D: Structural Biology, 2017
Research in the area of protein crystallography at X-ray free-electron laser sources is summarized from the perspective of radiation damage, including its mechanisms and effects, ways to minimize it and a comparison with the damage observable at ...
K. Nass
semanticscholar   +1 more source

Crystallographic Insights into the Structural Heterogeneities of 2D Ruddlesden‐Popper Perovskite Films

Advanced Materials Interfaces, EarlyView.
2D Ruddlesden‐Popper phase perovskite (RPP) films for applications in photovoltaics are shown to exhibit structural heterogeneities at both microscopic and mesoscopic scales that can affect cross‐film charge carrier transport. The mechanisms of RPP film formation and the possible means to control film structure to optimize 2D perovskite solar cell ...
Fei Zheng, Sergey Rubanov, Christopher Hall, Jingying Liu, Mei Gao, Trevor A. Smith, Dechan Angmo, Kenneth P. Ghiggino   +7 more
wiley   +1 more source

Crystal structure and Hirshfeld surface analysis of a pyridiniminium bromide salt: 1-[2-(adamantan-1-yl)-2-oxoethyl]pyridin-4-iminium bromide

Acta Crystallographica Section E: Crystallographic Communications, 2018
In the cation of the title salt, C17H23N2O+·Br−, the adamantyl moiety and the pyridiniminium ring are inclined to the ketone bridge by torsion angles of −78.1 (2) (C—C—C=O) and 58.3 (2)° (C—C—N—C), respectively, and the ketone bridge has a C—C—C—N ...
Huey Chong Kwong, Imdad Mahmud Pathi, C. S. Chidan Kumar, Ching Kheng Quah, Md. Azharul Arafath   +4 more
doaj   +1 more source

X-Ray Crystallography and its Role in Understanding the Physicochemical Properties of Pharmaceutical Cocrystals

Journal of the Indian Institute of Science, 2017
Properties of a matter are intrinsically dependent on the internal arrangement of molecules in the solid state. Therefore, knowledge of three-dimensional structure of the matter is a prerequisite for structure–property correlations and design of ...
S. Aitipamula, Venu R. Vangala
semanticscholar   +1 more source