Two‐Dimensional Fluorinated Covalent Organic Frameworks with Tunable Hydrophobicity for Ultrafast Oil–Water Separation
作者:Yuhao Liu、Wei Li、Chen Yuan、Lei Jia、Yan Liu、Aisheng Huang、Yong Cui
DOI:10.1002/anie.202113348
日期:2022.1.10
Three 2D robust COFs with controllable hydrophobicity and processability were synthesized by introducing mixed hydrophobic substituents. After coating on a stainless-steel net (SSN) substrate, the superhydrophobic COF@SSN coating exhibits an excellent oil/water separation efficiency (>99.5 %), high oil-permeation flux (2.84±0.08)×105 L m−2 h−1, high water-pressure resistance (>15 kPa), and a high degree
通过引入混合疏水取代基,合成了三种具有可控疏水性和可加工性的二维鲁棒 COF。涂覆在不锈钢网(SSN)基材上后,超疏水COF@SSN涂层表现出优异的油水分离效率(>99.5%)、高透油通量(2.84±0.08)×10 5 L m -2 h -1、高耐水压性(>15 kPa)和高度的可重复使用性(>50 次循环)。
Fluorophenylborates and their use as activators in catalyst systems for olefin polymerization
申请人:Rodriguez George
公开号:US20070021575A1
公开(公告)日:2007-01-25
A fluorophenylborate useful as an activator for an olefin polymerization catalyst is represented by the formula:
Ct
+
[B—(Ar
f
R
n
)
4
]
−
where Ct
+
is a cation capable of extracting an alkyl group from, or breaking a carbon-metal bond of, an organo metallic compound; Ar
f
is a fluorophenyl group; n is 1 or 2; and each R is independently selected from a fluorophenyl group and a fluoronaphthyl group, provided that when n=1, each R group is connected at the 3-position relative the connection between the associated Ar
f
group and the boron atom and, when n=2; the R groups are connected at the 3-position and the 5-position respectively relative the connection between the associated Ar
f
group and the boron atom.
Synthesizing Highly Fluorinated Oligophenyls via Negishi Coupling of Fluoroarylzinc Pivalates
作者:Julian Stoesser、Stefan M. Huber、Elric Engelage
DOI:10.1055/a-1647-6973
日期:2022.2
compounds, which are not very stable under reactions conditions and thus need to be used in large excess. Herein, we report an improved general strategy for the synthesis of highly fluorinated biphenyls, terphenyls, and phenyl-substituted terphenyls using organozinc pivalates. The influence of several parameters was investigated: (1) in a series of monodentate phosphine ligands, X-Phos showed the best performance;
PROCESS FOR PREPARATION OF SUBSTITUTED AROMATIC COMPOUND
申请人:——
公开号:US20020161227A1
公开(公告)日:2002-10-31
A substituted aromatic compound substituted with Q is obtained by reacting a phosphazenium compound represented by formula (1)
1
(in the formula,
Q
−
represents an anion in a form derived by elimination of a proton from an inorganic acid, or an active hydrogen compound having an active hydrogen on an oxygen atom, a nitrogen atom or a sulfur atom;
a, b, c and d, each independently, is 0 or 1, but all of them are not 0 simultaneously; and
R groups represent the same or different hydrocarbon groups having 1 to 10 carbon atoms, or two Rs on each common nitrogen atom may be bonded together to form a ring structure) with a halogenated aromatic compound having halogen atoms;
whereby, at least one halogen atom in the halogenated aromatic compound is substituted with
Q
(where, Q represents an inorganic group or an organic group in a form derived by elimination of one electron from Q
−
in formula (1)).
A trigonal donor–acceptor molecule of 1,3,5-tris(4-(diphenylamino)phenyl)-2,4,6-tricyanobenzene (3DPA3CN) was synthesized to exhibit efficient thermally activated delayed fluorescence.