Results 131 to 140 of about 55,441 (308)

Deposition of platinum-group metals in sediment and water bodies along the coastal belt of Ghana [PDF]

Maejo International Journal of Science and Technology, 2011
Water and sediment samples from seven water bodies along the coastal belt of Ghana were assessed for the deposition of platinum-group metals (PGM), i.e. platinum, palladium and rhodium.
David K. Essumang
doaj  

Rhodium- or Iridium-Catalyzed trans-Hydroboration of Terminal Alkynes, Giving (Z)-1-Alkenylboron Compounds

, 2016
Rhodium- or Iridium-Catalyzed trans-Hydroboration of Terminal Alkynes, Giving (Z)-1-Alkenylboron ...
Toshimichi Ohmura (1608064), Yasunori Yamamoto (34512), Norio Miyaura (2143414)   +2 more
core   +1 more source

Accelerated Materials Discovery Through In Situ X‐ray Diffraction: Solvothermal Formation of PdxMy (M═Si, Ge, Sn, Pb) Intermetallic Nanoparticles

Advanced Materials, EarlyView.
In situ PXRD data on solvothermal reactions accelerate materials discovery while simultaneously providing fundamental insights into complex crystal formation processes. Using PdxMy (M = Si, Ge, Sn, Pb) as an example, a general formation mechanism is identified, and specific synthesis strategies for ex situ preparation of SnPd2, Sn13Pd20, and SnPd ...
Anders Bæk Borup, Bo Brummerstedt Iversen   +1 more
wiley   +1 more source

Strong Fully Reprocessable Engineered Wood Composites

Advanced Materials, EarlyView.
Engineering a hyperbranched adhesive with complementary imine‐bond and hydrogen‐bond networks, combining it with wood particles to fabricate the wood composite (WP/HTP) under mild hot‐pressing conditions. The WP/HTP exhibits 100% mechanical strength recovery after three cycles of reprocessing, and the reprocessed modulus of rupture (MOR) and modulus of
Xilin Zhang, Zheng Liu, Zhezhe Zhou, Mark Lynch, Jianzhang Li, Paulomi Burey, Jingchao Li, Cheng Zhang, Qiang Gao, Pingan Song   +9 more
wiley   +1 more source

Enantioselective Access to Trifluoromethylated Spirocyclopropyl Heterocycles. [PDF]

Adv Sci (Weinh)
We report a rhodium‐catalyzed asymmetric [2+1] spirocyclopropanation of methylene azacycles with trifluoromethyl carbenes in situ derived from fluoroalkyl triftosylhydrazones. ABSTRACT Chiral spirocyclopropyl heterocycles have emerged as privileged three‐dimensional structural motifs in medicinal chemistry.
Zhu Y, Xu Y, Zhang W, Ning Y, Jiang Y, Ning Y, Huang G, Cheng J, Sivaguru P, Bi X.   +9 more
europepmc   +2 more sources

Phase‐Engineered MoS2 Quantum Monolayer Catalysts

Advanced Materials, EarlyView.
A new type of catalyst model—phase‐engineered MoS2 quantum‐monolayer catalyst (∼0.8 nm thick, < 6 nm in the lateral size; switchable freely among metallic 1T, semiconducting 2H, and a hybrid phase of metallic‐semiconducting 1T‐2H)—is reported. It can efficiently and stably drive photochemical H2, syngas and ammonia synthesis as a catalyst or co ...
Ruijie Yang, Yingying Fan, Lillian Pernitsky, Mojtaba Ebrahimian Mashhadi, Ningxin Chen, Md. Mehadi Hassan, Zheng Li, Heng Zhao, Liang Mei, Zhiyuan Zeng, Zhangxing Chen, Jinguang Hu, Qingye Lu   +12 more
wiley   +1 more source

Rhodium-Catalyzed Oxidative Amidation of Sterically Hindered Aldehydes and Alcohols

, 2016
A rhodium-catalyzed oxidative amidation reaction has been developed with sterically hindered aldehydes and alcohols for the synthesis of amides containing a quaternary carbon at the α position. A variety of amine nucleophiles, both aliphatic and aromatic,
Trang T. Nguyen (1532980), Kami L. Hull (1493695)   +1 more
core   +1 more source

A Critical Call for Mechanistic Investigations of Metal‐Bacteria Interactions

Advanced Materials, EarlyView.
It is well established that the antibacterial properties of metals have tremendous importance for bioengineering applications. What is not as appreciated, however, is the reproducibility crisis in this field's vast literature. In this perspective, we highlight this reproducibility problem, discuss its sources, and suggest solutions towards focused ...
J. Rackwitz, A. Bandyopadhyay, S. Belkin, S. Bose, N. Eliaz, J. L. Gilbert, T. C. Lowe, F. Mücklich, R. J. Turner, C. C. Tasan   +9 more
wiley   +1 more source

Biomass DNA: An Emerging Building Block for Advanced Materials

Advanced Materials, EarlyView.
Biomass DNA is rapidly emerging from its traditional role as a genetic blueprint to serve as a versatile abundant, highly programmable polymeric building block. This review highlights the transformation of macroscopic bulk biomass DNA into next generation of functional materials, spanning from dynamic hydrogels, sustainable bioplastics, and high ...
Yuwei Hu, Itamar Willner, Li Niu
wiley   +1 more source

Rhodium-Catalyzed C6-Selective C–H Borylation of 2‑Pyridones

, 2016
A pyridine-directed, rhodium-catalyzed C6-selective C–H borylation of 2-pyridones with bis­(pinacolato)­diboron (pinB–Bpin) has been developed. The reaction proceeds smoothly under relatively mild conditions, and the corresponding C6-borylated 2 ...
Wataru Miura (715942), Koji Hirano (1452925), Masahiro Miura (308443)   +2 more
core   +1 more source