Results 41 to 50 of about 56,095 (275)

Mechanisms of base selection by the E.coli mispaired uracil glycosylase [PDF]

, 2008
The repair of the multitude of single-base lesions formed daily in the cells of all living organisms is accomplished primarily by the base-excision repair (BER) pathway that initiates repair through a series of lesion-selective glycosylases.
Darwanto, Agus, Goddard, William, III, Liu, Pingfang, Pascal, Tod, Sowers, Lawrence C., Theruvathu, Jacob A., Valinluck Lao, Victoria   +6 more
core   +2 more sources

Furan‐Substituted Phosphine‐Oxide as an Efficient Interfacial Modifier for Wide‐Bandgap Perovskite Solar Cells

Advanced Functional Materials, EarlyView.
We report phosphine‐oxide interlayers for wide‐bandgap perovskite solar cells, in which tuned P = O Lewis basicity enables selective passivation of buried NiOx/perovskite interfaces and introduces interfacial dipoles that strengthen the built‐in field.
JeeHee Hong, Juan Anthony Prayogo, Soobin Heo, Jae Sung Yun, Dong Ryeol Whang, Dong Wook Chang, Hui Joon Park   +6 more
wiley   +1 more source

Solvent-free synthesis of azomethines, spectral correlations and antimicrobial activities of some E-benzylidene-4-chlorobenzenamines

Bulletin of the Chemical Society of Ethiopia, 2015
Some azomethines including substituted benzylidene-4-chlorobenzenamines (E-imines) have been synthesized by fly-ash: PTS catalyzed microwave assisted condensation of 4-chloroaniline and substituted benzaldehydes under solvent-free conditions.
R. Suresh, S. P. Sakthinathan, D. Kamalakkannan, K. Ranganathan, K. Sathiyamoorthi, V. Mala, R. Arulkumaran, S. Vijayakumar, R. Sundararajan, G. Vanangamudi, M. Subramanian, G. Thirunarayanan, G. Vanaja, P. Kanagambal   +13 more
doaj   +1 more source

The experimental gas-phase structures of 1,3,5-trisilylbenzene and hexasilylbenzene and the theoretical structures of all benzenes with three or more silyl substituents [PDF]

, 2005
The structures of 1,3,5-trisilylbenzene and hexasilylbenzene in the gas phase have been determined by electron diffraction, and that of 1,3,5-trisilylbenzene by X-ray crystallography.
Binkley, Blair F. Johnston, Brown, Caminati, Cassado, Christoph Rüdinger, David W. H. Rankin, Domenicano, Durig, Fleming, Gordon, Gordon, Gordon, Hariharan, Heather E. Robertson, Hedberg, Hehre, Hinchley, Hubert Schmidbaur, Huntley, Keidel, Krigbaum, Lewis, Lister, Minge, Mitzel, Norbert W. Mitzel, Nygaard, Pietro, Portalone, Reiter, Rüdinger, Rüdinger, Sakurai, Scott, Steer, Strand, Strand, Woo, Xie, Yip   +40 more
core   +1 more source

Cross‐Layer Molecular Design for Coherent Interface Passivation in Rigid and Flexible Perovskite Solar Cells

Advanced Functional Materials, EarlyView.
A cross‐layer passivation strategy employing molecularly designed thiazol‐5‐ylmethanamine hydrochloride (TMACl) enables coherent defect regulation at the SnO2/perovskite interface, stabilizes both layers, promotes phase‐pure α‐FAPbI3 formation, and enhances charge extraction, delivering PCEs of 26.44% in rigid and 24.72% in flexible perovskite solar ...
Fan Shen, Chenxu Zhao, Lianghui Li, Jia Xu, Jiale Chen, Xunhui Wang, Huijing Liu, Pengchen Zou, Xuewei Liu, Yao Fu, Huifang Han, Kun Lang, Yijun Wang, Yahan Wu, Xu Pan, Zhaofu Fei, Jianxi Yao   +16 more
wiley   +1 more source

Steric Effects on Reaction Rates Correlation Analysis of Solvolysis Data for Tertiary Carbon Substrates

CHIMIA, 1987
Rate constants for solvolysis of tertiary chlorides and p-nitrobenzoates are compared and converted to Bentley’s unified reactivity scale. For the majority of structures consistent behavior is observed. Deviations are interpreted in terms of F-strain dr,
Paul Müller, Jacky Blanc, Jiri Mareda
doaj   +1 more source

Hammett Correlations of Carbonyl 13C Chemical Shifts in a Series of N-(4-Substituted Phenyl)-6-Chloro-5-Fluoronicotinamides [PDF]

, 1995
A series of nine N-(4-substituted phenyl)-6-chloro-5- fluoronicotinamides exhibited excellent correlations of their carbonyl 13C shifts (5CO,ppm as measured in DMSO) with the standard Hammett substituent constants (c?R) of the substituent inthe 4 ...
Hawley, John W., Setliff, Frank L., Toland, Alan D.   +2 more
core   +1 more source

How the Carrier Mobility and Seebeck Coefficient of Doped Semiconducting Polymers Are Controlled by Counterion Interactions and Mesoscale Order

Advanced Functional Materials, EarlyView.
Conventional doping of P3HT with F4TCNQ results in poor charge transport. However, when F4TCNQ is exchanged with LiTFSI, the transport characteristics are greatly enhanced. We find the increase in charge transport is directly related to an increase in the mesoscale ordering of P3HT, resulting in longer and better‐connected transport pathways.
Quynh M. Duong, Diego Garcia Vidales, Xinyu Liu, Charlene Z. Salamat, Austin Ready, Hashim Al Khunaizi, Mei Matsumoto, Alexander M. Spokoyny, Sarah H. Tolbert, Benjamin J. Schwartz   +9 more
wiley   +1 more source

Electronics and Chemistry: Varying Single Molecule Junction Conductance Using Chemical Substituents

, 2007
We measure the low bias conductance of a series of substituted benzene diamine molecules while breaking a gold point contact in a solution of the molecules.
Hybertsen, Mark S., Nuckolls, Colin, Park, Young S., Steigerwald, Michael L., Venkataraman, Latha, Whalley, Adam C.   +5 more
core   +1 more source

Stepwise On‐Surface Synthesis and Transformations of Two‐Dimensional Covalent Organic Frameworks by Controlled Thermal Stimuli

Advanced Materials, EarlyView.
The seminal transformation of a 2D‐COF (SURFCOF‐IMDEA1) into a 2D porous COF (SURFCOF‐IMDEA2) on Au(111) by a sequential C‐C coupling and ladderization triggered by thermal annealing steps at increasing temperatures is reported. Abstract The development of covalent organic frameworks (COFs) is currently a primary objective in materials science, taking ...
Ana Barragán, Elena Pérez‐Elvira, Diego J. Vicent, Marco Lozano, Diego Soler‐Polo, Koen Lauwaet, José M. Gallego, Rodolfo Miranda, José I. Urgel, Pavel Jelínek, Nazario Martín, David Écija   +11 more
wiley   +1 more source