Results 1 to 10 of about 1,053 (173)

Metallocene to metallocene conversion. Synthesis of an oxazoline-substituted pentamethyliridocenium cation from a ferrocenyloxazoline [PDF]

Chemical Communications, 2016
A novel metallocene to metallocene conversion is reported in which an air-stable oxazoline-substituted ferrocene is converted into an air-stable oxazoline-substituted iridocenium ion.
Ross A. Arthurs, Peter N. Horton, Simon J. Coles, Christopher J. Richards   +3 more
openaire   +4 more sources

Research progress on flexible MXene‐based materials in advanced energy storage devices: From preparation strategies to device applications

FlexMat, EarlyView.
This review summarizes MXene synthesis and flexible electrode fabrication for FESDs, highlighting their potential owing to high conductivity and flexibility, and outlines future research directions. Abstract The rapid development of wearable and portable electronics has created demand for flexible energy storage systems (FESDs) that not only exhibit ...
Nanxi Miao, Ying Lu, Xing Gao, Lingzi Pan, Meng Gao, Chenxi Zhang, Ming Liu, Shizhong Wang, Zhongyu Weng, Huan Pang, Huijie Zhou   +10 more
wiley   +1 more source

Rheological Characterization of a Low‐Concentration Water‐Based Collagen Dispersion Under Extensional, Shear, and Oscillatory Deformation

Polymer Engineering &Science, EarlyView.
Combined capillary and oscillatory rheology provided complementary insights into the linear, nonlinear, and extensional flow behavior of a 3 wt% collagen dispersion, improving the understanding of its processing‐relevant rheological characteristics. ABSTRACT This study presents an investigation of the extensional, shear, and oscillatory rheological ...
Fadi Alzarzouri, Xiaohe Xu, Manfred Wilhelm, Jan Skočilas   +3 more
wiley   +1 more source

Alargamento da distribuição de massa molar de polímeros sintetizados com catalisadores metalocênicos dual-site Broadening of molecular weight distribution of polymers synthesized by metallocene-based dual-site catalysts

Química Nova, 2008
The main topics related to the use of dual-site catalysts in the production of polymers with broad molecular weight distribution are reviewed. The polymerization using dual-site catalysts is more economical and allows to produce a higher quality product ...
João H. Z. dos Santos, Adriano G. Fisch, Nilo S. M. Cardozo, Argimiro R. Secchi   +3 more
doaj   +1 more source

Discovery and development of metallocene-based polyolefins with special properties [PDF]

Polyolefins Journal, 2015
Beside Ziegler-Natta and Phillips catalysts the development of methylaluminoxane (MAO) as cocatalyst in combination with metallocenes or other transition metal complexes for the polymerization of olefins has widely increased the possibilities in ...
Walter Kaminsky, Mercia Fernandes
doaj   +1 more source

A novel n‐type dimer dopant for semiconducting polymers

Polymer International, EarlyView.
A novel molecular n‐type dopant (1) with superior capacity to dope conjugated polymers is introduced. After charge transfer the product (2) remains in the polymer. Abstract Efficient and stable doping of organic semiconductors is crucial for adjusting their electrical properties.
Andreas Opitz, Nele Merten, Vasu Malhotra, Anukul Jana, Norbert Koch   +4 more
wiley   +1 more source

Triaminoalkenes Derived from Cyclic (Alkyl)(amino)carbenes with a 1,1′‐Ferrocenylene Backbone and N‐Heterocyclic Carbenes: fcCAAC–NHC Heterodimers

ChemistryOpen
The study addresses triaminoalkenes derived from [3]ferrocenophane‐type cyclic (alkyl)(amino)carbenes (fcCAACs) fc(CPh2CNR) (fc = 1,1′‐ferrocenylene) and N‐heterocyclic carbenes (NHCs). Stable target compounds are obtained in good yields as crystalline
Suman Yadav, Clemens Bruhn, Clemens Lücke, Richard Rudolf, Tabea Pfister, Biprajit Sarkar, Ulrich Siemeling   +6 more
doaj   +1 more source

Dialkyl dicyanofumarates and dicyanomaleates as versatile building blocks for synthetic organic chemistry and mechanistic studies

Beilstein Journal of Organic Chemistry, 2017
The scope of applications of dialkyl dicyanofumarates and maleates as highly functionalized electron-deficient dipolarophiles, dienophiles and Michael acceptors is summarized.
Grzegorz Mlostoń, Heinz Heimgartner
doaj   +1 more source

Catalisadores metalocênicos suportados para a produção de poliolefinas: revisão das estratégias de imobilização

Química Nova, 2011
The inadequacy of strategies used for the heterogeneization of metallocene catalysts is pointed out as one of the main causes of the lack of industrial employability of such polymerization catalysts.
Adriano G. Fisch, Nilo S. M. Cardozo, Argimiro R. Secchi, João H. Z. dos Santos   +3 more
doaj   +1 more source

Impact of Commercial Polyolefin Architecture and Composition on Its Ability to Compatibilize High‐Density Polyethylene/Isotactic Polypropylene Blends

Journal of Polymer Science, EarlyView.
This research elucidates the relationship between the molecular structure of commercially available ethylene–propylene copolymers and an ethylene/1‐olefin copolymer and its ability to compatibilize high‐density polyethylene/isotactic polypropylene blends. These findings indicate that the compatibilization of these blends with random copolymers benefits
Bailey Eberle, Susan K. Houston, Hannah Giffin, Mark Dadmun   +3 more
wiley   +1 more source