Results 261 to 270 of about 280,815 (357)

Chain-Walking Polymerization of α-Olefins by α-Diimine Ni(II) Complexes: Effect of Reducing the Steric Hindrance of Ortho- and Para-Aryl Substituents on the Catalytic Behavior, Monomer Enchainment, and Polymer Properties

, 2018
Ivana Pierro, Giorgia Zanchin, Emilio Parisini, Javier Martí‐Rujas, Maurizio Canetti, Giovanni Ricci, Fabio Bertini, Giuseppe Leone   +7 more
openalex   +2 more sources

Phase Engineering of Nanogold: Non‐Close Packed Square Planes in A′B′ Stacking with a 0.5 Å Channel

Advanced Materials, EarlyView.
Gold is well known to adopt the face‐centered‐cubic (fcc) structure. This work presents an unusual non‐close‐packed phase attained in a 40‐atom gold nanocluster, which is in contrast with the close‐packed fcc quasi‐isomer. The non‐compact structure exhibits exclusive square planes in a layer‐by‐layer stacking, hence, possessing a unique 0.5 Å channel ...
Yitong Wang, Zhongyu Liu, Christopher G. Gianopoulos, Wei Zhang, Dominic Alfonso, Guiying He, Kristin Kirschbaum, Meng Zhou, Rongchao Jin   +8 more
wiley   +1 more source

A theoretical, dynamical evaluation method of the steric hindrance in nitroxide radicals using transition states of model reactions. [PDF]

Sci Rep, 2019
Yamazaki Y, Naganuma J, Gotoh H.
europepmc   +1 more source

pH sensitivity regulation based on photoinduced electron transfer and steric hindrance effect

Zongjie Zhang, Hongxia Zhang, Qingxin Luan, Chunran Cao, Mingwei Li, Kun Dong, Dagong Jia, T. Liu   +7 more
openalex   +1 more source

Structure and Conformational Studies of Aza‐Crown 8‐Amino‐BODIPY Derivatives: Influence of Steric Hindrance on Their Photophysical Properties

, 2017
Ana M. Costero, Lourdes Betancourt-Mendiola, Pablo Gaviña, Luís E. Ochando, Salvador Gil, Katherine Chulvi, Eduardo Peña‐Cabrera   +6 more
openalex   +2 more sources

Liquid Metal Microrobots for Magnetically Guided Transvascular Navigation

Advanced Materials, EarlyView.
Liquid metal‐based microrobots combine magnetic steering, intrinsic X‐ray visibility and softness, to navigate blood vessels even against flow. Under clinically relevant magnetic fields, liquid metal microrobots roll along vessel walls, cross endothelial barriers, and accumulate in target tissues.
Xiaohui Ju, Roshan Velluvakandy, Xianghua Wu, Miguel Angel Merlos Rodrigo, Zbyněk Heger, Kamila Bendíčková, Jan Frič, Martin Pumera   +7 more
wiley   +1 more source

Aggregation‐Induced Emission Molecular Design for Mitigating Non‐Radiative Energy Loss in Organic Solar Cells

Advanced Materials, EarlyView.
Aggregation‐induced emission strategy is first used to overcome aggregation‐caused quenching in Y‐series acceptors. By integrating tetraphenylethylene, the dTPE exhibits three‐fold PLQY enhancement and significantly suppressed non‐radiative energy loss. An ultra‐low Eloss of 0.130 eV and a record VOC of 0.93 V are achieved, resulting in a PCE over 20.5%
Yingze Zhang, Rongkun Zhou, Mingjie Rong, Xianghao Zeng, Ho Ming Ng, Ruijie Ma, Joshua Yuk Lin Lai, Chao Li, Shuwei Qiu, Heng Liu, Hao Xia, Lei Zhu, Guangye Zhang, Xinhui Lu, Zilong Zheng, Jun Liu, He Yan, Sai Ho Pun, Gang Li   +18 more
wiley   +1 more source

Steric hindrance controls pyridine nucleotide specificity of a flavin-dependent NADH:quinone oxidoreductase. [PDF]

Protein Sci, 2019
Ball J, Reis RAG, Agniswamy J, Weber IT, Gadda G.   +4 more
europepmc   +1 more source

Tuning Pore Size in Porous Graphene Membrane for O2/N2 Separation

Advanced Materials, EarlyView.
Single‐layer graphene membranes featuring N‐functionalized, 0D pores offer a promising platform for O2/N2 separation. The heterogeneity of functional groups at the pore edge is dynamically tunable, enabling precise tuning of the pore limiting diameter and gas transport.
Kuang‐Jung Hsu, Marina Micari, Yueqing Shen, Shaoxian Li, Shuqing Song, Kumar Varoon Agrawal   +5 more
wiley   +1 more source

Shock initiation sensitivity of PETN: A steric hindrance model

, 1991
J. J. Dick
openalex   +1 more source