Development of highly active, thermally stable chromophores and polymers for electro-optic applications

1994 ◽  
Author(s):  
Alex K.Y. Jen ◽  
Varanasi P. Rao ◽  
K. J. Drost ◽  
Yongming Cai ◽  
Robert M. Mininni ◽  
...  
Keyword(s):  
Thermally Stable ◽  
Highly Active ◽  
Electro Optic

Highly Active and Thermally Stable Ctlromophores and Polymers for Electro-Optic Applications

1995 ◽  
Vol 392 ◽  
Author(s):  
Alex K-Y. Jen ◽  
Tian-An Chen ◽  
Varanasi Pushkara Rao ◽  
Yong-Ming Cai ◽  
Yue-Jin Liu ◽  
...  
Keyword(s):  
High Temperature ◽  
Nonlinear Optical ◽  
Thermally Stable ◽  
Highly Active ◽  
Electro Optic ◽  
Nlo Chromophores

AbstractWe have developed two new classes of highly active and thermally stable nonlinear optical (NLO) chromophores based on the use of efficient thiophene conjugating units, a N,N-diphenylamino electron-donating group, and a 1,1′-dicyanovinyl substituted electron-accepting group. We have also developed a facile and generally applicable method to functionalize NLO chromophores onto high temperature polymers to demonstrate both high electro-optic (E-O) coefficients and long-term alignment stability at 100 °C.

scholarly journals Synthesis of Thermally Stable and Highly Active Bimetallic Au−Ag Nanoparticles on Inert Supports

2009 ◽  
Vol 21 (2) ◽  
pp. 410-418 ◽  
Author(s):  
Xiaoyan Liu ◽  
Aiqin Wang ◽  
Xiaofeng Yang ◽  
Tao Zhang ◽  
Chung-Yuan Mou ◽  
...  
Keyword(s):  
Ag Nanoparticles ◽  
Thermally Stable ◽  
Highly Active

Co3O4 nanostructures and Co3O4 supported on halloysite nanotubes: New highly active and thermally stable feasible catalysts for CO oxidation

2020 ◽  
Vol 190 ◽  
pp. 105590 ◽  
Author(s):  
Lucy-Caterine Daza-Gómez ◽  
Víctor-Fabián Ruiz-Ruiz ◽  
J. Arturo Mendoza-Nieto ◽  
Heriberto Pfeiffer ◽  
David Díaz
Keyword(s):  
Co Oxidation ◽  
Halloysite Nanotubes ◽  
Thermally Stable ◽  
Highly Active ◽  
Co3o4 Nanostructures

Poled Polyimides for Thermally Stable Electro-Optic Materials

1992 ◽  
Vol 247 ◽  
Author(s):  
J. W. Wu ◽  
J. F. Valley ◽  
M. Stiller ◽  
S. Ermer ◽  
E. S. Binkley ◽  
...  
Keyword(s):  
Electric Field ◽  
Nonlinear Optical ◽  
Room Temperature ◽  
Curing Process ◽  
Thermally Stable ◽  
Excellent Thermal Stability ◽  
Electro Optic ◽  
Poling Temperature ◽  
Electric Field Poling ◽  
Thermal Stability Of

ABSTRACTUsing polyimide as host in a guest-host electro-optic (EO) thin film a thermally stable poled electro-optic response is demonstrated at temperatures at 150 °C and 300 °C. Electric field poling during curing process including imidization (170 -230 °C) and densification (340 -380 °C) accounts for the highly thermally stable EO response. As a room temperature curing process, chemical imidization is employed as a novel curing process. Dehydration occurring through imidization of the polyamic acid is completed chemically after poling rather than thermally during poling. After thermal aging at 155 °C (above the poling temperature) chemically imidized samples retain over 30% of their original poling induced EO signal while similarly poled samples, which have not been chemically imidized, produce a null EO response. For a class of polyimides possessing aliphatic structure, the thermoplastic behavior of cured guest-host polyimide system allowed the electric field poling at temperatures above the glass transition temperature (Tg). One example of polyimide doped with 10% nonlinear optical molecules exhibits Tg near 200 °C, leading to an excellent thermal stability of the poled EO response with a depoling knee-temperature of 150°C.

Highly Active, Thermally Stable, Ethylene-Polymerisation Pre-Catalysts Based on Niobium/TantalumImine Systems

2013 ◽  
Vol 19 (27) ◽  
pp. 8884-8899 ◽  
Author(s):  
Carl Redshaw ◽  
Mark Walton ◽  
Lucy Clowes ◽  
David L. Hughes ◽  
Anna-Marie Fuller ◽  
...  
Keyword(s):  
Thermally Stable ◽  
Highly Active ◽  
Ethylene Polymerisation

Highly Efficient and Thermally Stable Electro-optic Polymer from a Smartly Controlled Crosslinking Process

2003 ◽  
Vol 15 (19) ◽  
pp. 1635-1638 ◽  
Author(s):  
J. Luo ◽  
M. Haller ◽  
H. Li ◽  
T.-D. Kim ◽  
A.K.-Y. Jen
Keyword(s):  
Thermally Stable ◽  
Highly Efficient ◽  
Crosslinking Process ◽  
Electro Optic

Synthesis and Optical Nonlinearity of Thermally Stable Polyimides Incorporated with Electro-Optic Chromophore as Side Chain

2007 ◽  
Vol 249-250 (1) ◽  
pp. 21-28 ◽  
Author(s):  
Hyun Kyung Ju ◽  
Jong Sun Lim ◽  
Sung Cheol Yoon ◽  
Changjin Lee ◽  
Dong Hoon Choi ◽  
...  
Keyword(s):  
Optical Nonlinearity ◽  
Side Chain ◽  
Thermally Stable ◽  
Electro Optic

Highly Active and Thermally Stable Core-Shell Catalysts for Solid Oxide Fuel Cells

2011 ◽  
Vol 158 (6) ◽  
pp. B596 ◽  
Author(s):  
Ju-Sik Kim ◽  
Noah L. Wieder ◽  
Ashley J. Abraham ◽  
Matteo Cargnello ◽  
Paolo Fornasiero ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Solid Oxide ◽  
Core Shell ◽  
Oxide Fuel ◽  
Thermally Stable ◽  
Highly Active ◽  
Stable Core

Thermally stable and highly active Pt/CeO2@SiO2 catalysts with a porous/hollow structure

2018 ◽  
Vol 8 (17) ◽  
pp. 4413-4419 ◽  
Author(s):  
Guozhu Chen ◽  
Ying Yang ◽  
Zeyi Guo ◽  
Daowei Gao ◽  
Wei Zhao ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Catalytic Activity ◽  
Hollow Structure ◽  
Selective Etching ◽  
Thermally Stable ◽  
Highly Active

One robust selective-etching approach is used to encapsulate Pt/CeO2 composites into SiO2 with a porous/hollow structure for enhanced thermal stability and catalytic activity.

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