نتایج جستجو برای: metallocene complexes

تعداد نتایج: 137434  

Journal: :Angewandte Chemie 2017
Lucie Rivier Pekka Peljo Laurent A C Vannay Grégoire C Gschwend Manuel A Méndez Clémence Corminboeuf Micheál D Scanlon Hubert H Girault

The photoinduced hydrogen evolution reaction (HER) by decamethylruthenocene, Cp2 *RuII (Cp*=C5 Me5 ), is reported. The use of a metallocene to photoproduce hydrogen is presented as an alternative strategy to reduce protons without involving an additional photosensitizer. The mechanism was investigated by (spectro)electrochemical and spectroscopic (UV/Vis and 1 H NMR) measurements. The photoacti...

2015
Yuelong Tian Min Ge Weigang Zhang Xiaoxu Lv Shouquan Yu

Metallocene of zirconium were used as a catalyst for an insertion polymerization of 1-methylsilene directly into pre-ceramic precursor polyzirconocenecarbosilane (PZCS) during dechlorination of dichlorodimethylesilane by sodium, which exhibits high catalytic effectiveness with the maximum conversion ratio of polycarbosilane up to 91%. The average molecular weights of polymers synthesized are le...

2011
M. Zubaer Hossain

Related Articles Excitation of discrete and continuous spectrum for a surface conductivity model of graphene J. Appl. Phys. 110, 114305 (2011) Abnormal electronic transport and negative differential resistance of graphene nanoribbons with defects Appl. Phys. Lett. 99, 192102 (2011) The effect of doping on the energetics and quantum conductance in graphene nanoribbons with a metallocene adsorbat...

Journal: :Dalton transactions 2012
Matthew Jeletic Frédéric A Perras Serge I Gorelsky Jennifer J Le Roy Ilia Korobkov David L Bryce Muralee Murugesu

A tetralithio salt (1) derived by treating 1,4-bis(trimethylsilyl)-cyclooctatriene with (n)BuLi serves as the first structural evidence for a multi-alkali metallocene. Single-crystal XRD confirms two Li(+) each asymmetrically bind to η(3) and η(4) between two COT'' rings and two Li(+) terminally bind to η(3). Solid-state NMR studies confirm the presence of two distinct lithium ion sites while t...

Journal: :Molecules 2005
Bunjerd Jongsomjit Sutti Ngamposri Piyasan Praserthdam

Activities during ethylene/1-hexene copolymerization were found to increase using the mixed titania/silica-supported MAO with rac-Et[Ind]2ZrCl2 metallocene catalyst. Energy Dispersive X-ray spectorcopy (EDX) indicated that the titania was apparently located on the outer surface of silica and acted as a spacer to anchor MAO to the silica surface. IR spectra revealed the Si-O-Ti stretching at 980...

Journal: :Journal of Physical Chemistry C 2022

Intercalating redox-active molecules into layered materials expands their functionality for emerging energy technologies. However, the mechanism of charge transfer to and from these small within confined environment host material role in storge are largely unexplored. Herein, we examine processes metallocene intercalated transition metal dichalcogenides, including MoS2 WS2. Combining experiment...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز - دانشکده علوم طبیعی 1391

in recent years many researchers have been focused on interaction of small molecules with dna. dna is generally the primary intracellular of anticancer drugs, so the interaction between small molecules and dna can cause dna damage in cancer cells, blocking the division of cancer cells and resulting in cell death. the flavonoids are a large group of polyphenolic natural products that are widely ...

Journal: :Journal of Polymer Science Part A: Polymer Chemistry 2004

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