5253-87-2Relevant academic research and scientific papers
Highly resilient polyethylene elastomers prepared using α-diimine nickel catalyst with highly conjugated backbone
He, Feng,Wang, Dan,Wu, Anyang,Jiang, Baiyu,Zhang, Zhen,Cheng, Zhenmei,Fu, Zhisheng,Zhang, Qisheng,Fan, Zhiqiang
, (2018)
An α-diimine nickel catalyst (Cat-1) with highly conjugated acenaphthylene backbone was synthesized and used in ethylene polymerization. Compared with typical Brookhart catalyst B-Cat, Cat-1 could produce polyethylene with both higher molecular weight (up to 5.1?×?105?g?mol?1) and branching density (up to 135 branches per 1000 carbons) in good polymerization activity. The polyethylene prepared using Cat-1 with higher molecular weight and branching density possessed exceptional mechanical properties (ultimate tensile strength and elongation at break could reach 12.08?MPa and 1148%) and outstanding elastomeric recovery as compared with the polymer prepared using B-Cat. Cat-1 was synthesized using a simple reaction route and the polymerization conditions were suitable for the industrial polymerization process. The novel nickel catalyst Cat-1 is promising for producing highly resilient polyethylene elastomers industrially.
ORGANIC COMPOUND, THREE-DIMENSIONAL ORGANIC FRAMEWORK FORMED BY USING ORGANIC COMPOUND, SEPARATION SIEVE AND OPTICAL LAYER, WHICH COMPRISE ORGANIC FRAMEWORK, AND OPTICAL DEVICE COMPRISING OPTICAL LAYER AS OPTICAL AMPLIFICATION LAYER
-
, (2019/02/13)
An organic compound, a three-dimensional organic structure formed by using the organic compound, a separation sieve and an optical layer having the organic structure, and an optical device having the optical layer as an optical amplification layer are provided. The organic structure includes a plurality of organic molecules self-assembled by non-covalent bonding. Each of the unit organic molecules has an aromatic ring, a first pair of substituents being connected to immediately adjacent positions of substitutable positions of the aromatic ring, and a second pair of substituents being connected to immediately adjacent positions of remaining substitutable positions of the aromatic ring. The unit organic molecules are self-assembled by van der Waals interaction, London dispersion interaction or hydrogen bonding between the first and the second pairs of the substituents and by pi-pi interactions between the aromatic rings.
Organic compound and 3-dimensional organic framework formed using the same
-
, (2018/07/07)
Provided is a three-dimensional organic framework. The organic framework comprises a plurality of organic molecules which are self-assembled by non-covalent bonds. Each of the organic molecules comprises: a first pair of substituents which are each bound to an aromatic ring and to immediately adjacent positions among substitutable positions of the aromatic ring; and a second pair of substituents which are each bound to immediately adjacent positions among the rest of the substitutable positions. The organic molecules are self-assembled through Van Der Waals interactions, London dispersion interactions, or hydrogen bonding between the first and second pairs of the substituents, and andpi;-andpi; interactions between the aromatic rings.COPYRIGHT KIPO 2018
