Nanoporous Low-Dielectric Constant Polyimide Films via Poly(amic acid)s with RAFT-Graft Copolymerized Methyl Methacrylate Side Chains

2004 ◽  
Vol 43 (21) ◽  
pp. 6723-6730 ◽  
Author(s):  
G. D. Fu ◽  
B. Y. Zong ◽  
E. T. Kang ◽  
K. G. Neoh ◽  
C. C. Lin ◽  
...  
Keyword(s):  
Dielectric Constant ◽  
Methyl Methacrylate ◽  
Amic Acid ◽  
Low Dielectric Constant ◽  
Side Chains ◽  
Polyimide Films ◽  
Low Dielectric

Novel soluble polyimides containing pyridine and fluorinated units: preparation, characterization, and optical and dielectric properties

RSC Advances ◽  
2016 ◽  
Vol 6 (26) ◽  
pp. 21662-21671 ◽  
Author(s):  
Weibing Dong ◽  
Yue Guan ◽  
Dejing Shang
Keyword(s):  
Dielectric Constant ◽  
Thermal Properties ◽  
Dielectric Properties ◽  
Low Dielectric Constant ◽  
Mechanical And Thermal Properties ◽  
Polyimide Films ◽  
Low Dielectric

To acquire low dielectric constant polyimide films with good mechanical and thermal properties and low CTE applied in microelectronic fields, three novel polyimides containing pyridine and –C(CF3)2– groups were firstly designed and synthesized.

Concluding remarks

1967 ◽  
Vol 167 (1009) ◽  
pp. 448-448 ◽  
Keyword(s):  
Dielectric Constant ◽  
Catalytic Activity ◽  
Active Sites ◽  
Low Dielectric Constant ◽  
Side Chains ◽  
Polar Medium ◽  
Active Centre ◽  
Low Dielectric ◽  
Globin Chains ◽  
First Time

For the first time we have been able to interpret the catalytic activity of an enzyme in stereochemical terms. It seems rash to generalize from the structure of one enzyme, but we may broaden our base by elevating myoglobin and haemoglobin to the rank of honorary enzymes, as Monod has suggested, and call the haem groups their active sites. What these three proteins have in common is the distribution of polar and nonpolar side chains; the interior of the lysozyme as well as that of the globin chains is made up largely of hydrocarbons, providing a medium of low dielectric constant. In each case the active centre lies in a pocket formed by this non-polar medium, and the pocket contains some polar residues which are essential for activity.

Heat resistant polyimide films with low dielectric constant by vapor deposition polymerization

1997 ◽  
Vol 308-309 ◽  
pp. 475-479 ◽  
Author(s):  
Sadayuki Ukishima ◽  
Masayuki Iijima ◽  
Masatoshi Sato ◽  
Yoshikazu Takahashi ◽  
Eiichi Fukada
Keyword(s):  
Dielectric Constant ◽  
Vapor Deposition ◽  
Low Dielectric Constant ◽  
Polyimide Films ◽  
Heat Resistant ◽  
Low Dielectric

Highly transparent, strong, and flexible fluorographene/fluorinated polyimide nanocomposite films with low dielectric constant

2018 ◽  
Vol 6 (24) ◽  
pp. 6378-6384 ◽  
Author(s):  
Xiaodong Yin ◽  
Yiyu Feng ◽  
Qiang Zhao ◽  
Yu Li ◽  
Shuangwen Li ◽  
...  
Keyword(s):  
Dielectric Constant ◽  
Dielectric Constants ◽  
Nanocomposite Films ◽  
Low Dielectric Constant ◽  
Polyimide Films ◽  
Low Dielectric ◽  
Fluorinated Polyimide ◽  
Polyimide Nanocomposite

Transparent and flexible fluorinated polyimide films with loading of well-dispersed fluorographene exhibit low dielectric constants.

A new glass-forming molecule having a fluorene skeleton: synthesis and conversion to the polymer with a low dielectric constant, high hydrophobicity and thermostability

2016 ◽  
Vol 7 (38) ◽  
pp. 5925-5929 ◽  
Author(s):  
Yuanqiang Wang ◽  
Jiajia Wang ◽  
Kaikai Jin ◽  
Jing Sun ◽  
Qiang Fang
Keyword(s):  
Dielectric Constant ◽  
Low Dielectric Constant ◽  
Side Chains ◽  
Glass Forming ◽  
Low Dielectric ◽  
Trifluorovinyl Ether

A new glass-forming molecule having a fluorene skeleton and thermally cross-linkable trifluorovinyl-ether side chains is reported here.

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