Journal ArticleDOI
Synthesis, characterization, and properties of fully aliphatic polyimides and their derivatives for microelectronics and optoelectronics applications
TLDR
In this paper, the recent research process in synthesizing fully aliphatic polyimides, with improved dimensional stability, high transparency and low e values, as well as the characterizations and future scope for their application in micro electric and photo-electronic industries, is reviewed.Abstract:
Polyimides are one of the most important classes of polymers used in the microelectronics and photoelectronics industries. Because of their high thermal stability, chemical resistance, and good mechanical and electric properties, polyimides are often applied in photoresists, passivation and dielectric films, soft print circuit boards, and alignment films within displays. Recently, fully aliphatic and alicyclic polyimides have found applications as optoelectronics and inter layer dielectric materials, due to their good transparencies and low dielectric constants (e). The low molecular density, polarity and rare probability of forming inter- or intra-molecular charge transfers, resulting in lowering of the dielectric constant and high transparency, are the most striking characteristics of aliphatic polyimide. However, the ultimate end use of polyimides derived from aliphatic monomers is in their targeted applications that need less stringent thermal requirements. Much research effort has been exerted in the development of aliphatic polyimide with increased thermal and mechanical stabilities, while maintaining their transparencies and low dielectric constants, by the incorporation of rigid moieties. In this article, the recent research process in synthesizing fully aliphatic polyimides, with improved dimensional stability, high transparency and low e values, as well as the characterizations and future scope for their application in micro electric and photo-electronic industries, is reviewed.read more
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Journal ArticleDOI
A review on colorless and optically transparent polyimide films: Chemistry, process and engineering applications
TL;DR: In this article, a review of colorless and optically transparent polyimide (CPI) films has been presented, focusing on the applications of CPI films as flexible substrates for optoelectrical devices, such as flexible active matrix organic light emitting display devices (AMOLEDs), flexible printing circuit boards (FPCBs), and flexible solar cells.
Journal ArticleDOI
Polyimides containing aliphatic/alicyclic segments in the main chains
TL;DR: In this paper, a review of the available aliphatic/alicyclic monomers and their potential applications is presented, along with the outlook for the future of polyimides and their advanced applications.
Journal ArticleDOI
Recent Trends on Transparent Colorless Polyimides with Balanced Thermal and Optical Properties: Design and Synthesis
Journal ArticleDOI
Highly Transparent and Refractive Polyimides with Controlled Molecular Structure by Chlorine Side Groups
TL;DR: Transparent polyimides (PIs) that have a high refractive index and low birefringence as well as good thermal and mechanical stability were synthesized by the judicious introduction of di- and tetrachlorinated aromatic diamines with aromatic/aliphatic dianhydrides as discussed by the authors.
Journal ArticleDOI
Preparation and characterization of highly transparent and colorless semi-aromatic polyimide films derived from alicyclic dianhydride and aromatic diamines
Lei Zhai,Shiyong Yang,Lin Fan +2 more
TL;DR: In this paper, a meta- substituted aromatic diamine containing trifluoromethyl and sulfonyl groups in the backbone was synthesized and characterized, and a series of semi-aromatic polyimides were prepared from 1,2,4,5-cyclohexanetetetracarboxylic dianhydride (CHDA) and various aromatic diamines.
References
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Book
X-Ray Diffraction: A Practical Approach
C. Suryanarayana,M. Grant Norton +1 more
TL;DR: In this article, X-Rays and Diffraction Lattices and Crystal Structures and Hexagonal Structures are used for X-Ray Diffraction Experimental Modules: Crystal structure determination, I: Cubic Structures Crystal Structure Determination, II: Hexagonal structures Precise Lattice Parameter Measurements Phase Diagram Determination Detection of Long-Range Ordering Determination of Crystallite Size and Lattite Strain Quantitative Analysis of Powder Mixtures Identification of an Unknown Specimen: Appendices: Plane-Spacing Equations and Unit
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Polyimides: Fundamentals and Applications
Malay K. Ghosh,K. L. Mittal +1 more
TL;DR: The history of the development of polyimides can be found in this article, where the authors describe the development and development of the Polyimides, the synthesis and synthesis of polyamideimides and their application in high-performance electronics Packaging and Optoelectronic Applications.
Journal ArticleDOI
Adamantane: Consequences of the Diamondoid Structure
Journal ArticleDOI
Highly Porous Polyhedral Silsesquioxane Polymers. Synthesis and Characterization
Chunxin Zhang,Florence Babonneau,Christian Bonhomme,Richard M. Laine,Christopher L. Soles,H. A. Hristov,Albert F. Yee +6 more
TL;DR: In this article, polyhedral octahydridosilsesquioxanes were copolymerized with stoichiometric amounts of octavinylsilssioxanes, [vinylSiO1.5]8 (2) and [(vinylMe2O)SiO 1.5]-8 (3) in toluene using platinum divinyltetramethyldisiloxane, “Pt(dvs)”, as catalyst.