Výsledky vyhledávání - "Chris M. Topping"

Ultracompact AWG Using Air-Trench Bends With Perfluorocyclobutyl Polymer Waveguides

Autor: Gregory P. Nordin, John Ballato, Dennis W. Smith, Chris M. Topping, Seunghyun Kim, Nazli Rahmanian, Yongbin Lin

Publikováno v: Journal of Lightwave Technology. 26:3062-3070

Using air-trench bends, an ultracompact 8 times 8 arrayed waveguide grating (AWG) demultiplexer (200-GHz channel spacing) for wavelength-division multiplexing (WDM) has been designed and fabricated with perfluorocyclobutyl (PFCB) core and clad co-pol

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e8e6dfb5c89c1d88cda4e213b19d6484
https://doi.org/10.1109/jlt.2008.920091

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Synthesis and characterization of a bis-(4-trifluoromethanesulfonyloxyphenyl)phenylamine monomer and its polymer for light-emitting applications

Autor: Dennis W. Smith, Gulay Zengin, Huseyin Zengin, Chris M. Topping

Publikováno v: Journal of Polymer Science Part A: Polymer Chemistry. 45:1860-1867

This study focuses on the preparation, polymerization, characterization, and optical properties of a new bis-(4-trifluoromethanesulfonyloxyphenyl)phenylamine monomer. This is the first nitrogen-containing monomer having nitrogen atoms as bridges betw

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3ab58b80fc91b1bb054d8e699c12b303
https://doi.org/10.1002/pola.21950

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First identification of biradicals during thermal [2π + 2π] cyclopolymerization of trifluorovinyl aromatic ethers

Autor: Jianyong Jin, Chris M. Topping, Luis Echegoyen, Veronique Mellon, Nicolas Mifsud, Dennis W. Smith

Publikováno v: Polymer International. 56:1142-1146

The thermal cyclopolymerization of three trifluorovinyl aromatic ether monomers 1,1,1-tris (4-trifluorovinyloxyphenyl)ethane (1), 4,4′-bis(4-trifluorovinyloxy)biphenyl (2) and 2,2-bis(4-trifluorovinyloxy- phenyl)-1,1,1,3,3,3-hexafluoropropane (3) w

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::99e3ad409d05d5df1ddfb07e654c383f
https://doi.org/10.1002/pi.2250

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Preparation and characterization of bis-ortho-diynylarene (BODA)-derived submicrogratings

Autor: Huseyin Zengin, Chris M. Topping, Dennis W. Smith, Stephen H. Foulger, Wensheng Zhou, Gulay Zengin

Publikováno v: Polymer Engineering & Science. 47:2095-2099

The objective of this study was to illustrate how submicrogratings can be prepared from bis-ortho-diynylarene (BODA)-derived polymers. BODA monomers undergo thermal step-growth polymerization and careful control of this conversion, with respect to mo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3229e7b8281250459aa24f6cd39931f1
https://doi.org/10.1002/pen.20929

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Synthesis and characterization of perfluorocyclobutyl (PFCB) polymers containing pendent phenylphosphine oxide

Autor: Norman Rice, Jianyong Jin, Chris M. Topping, Stephen H. Foulger, S. Suresh, Dennis W. Smith, Bob H. Mojazza

Publikováno v: Polymer. 46:6923-6932

Three phenylphosphine oxide (PPO) containing trifluorovinyl aryl ether monomers were synthesized and polymerized via thermal cyclodimerization affording perfluorocyclobutyl (PFCB) polymers containing PPO pendent groups. The new polymers exhibited mod

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::86286c727f1feb7d99be6dd1553705f0
https://doi.org/10.1016/j.polymer.2005.05.111

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Reactivity and Enantioselectivity in the Reactions of Scalemic Stereogenic α-(N-Carbamoyl)alkylcuprates

Autor: Chris M. Topping, Gabriel Oba, Rhett T. Watson, Kishan R. Chandupatla, Kai Lu, R. Karl Dieter

Publikováno v: The Journal of Organic Chemistry. 69:3076-3086

Stereogenic 2-(N-carbamoyl)pyrrolidinylcuprates prepared from scalemic (i.e., enantioenriched) N-Boc-2-lithiopyrrolidine and THF soluble CuCN.2LiCl react with vinyl iodides, vinyl triflates, beta-iodo-alpha,beta-enoates, propargyl mesylates, and ally

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::52440dfcc5a4293ba1389c38cf1e7285
https://doi.org/10.1021/jo035845i

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Synthesis and Thermal Characterization of Perfluorocyclobutyl(PFCB) Polymers Containing Crown Ether Vertebrae

Autor: Darryl D. DesMarteau, Stephen Fallis, Jennifer A. Irvin, Chris M. Topping, Dennis W. Smith, Jianyong Jin, S. Clark Ligon

Publikováno v: Macromolecular Chemistry and Physics. 205:801-805

Summary: The synthesis and polymerization of novel 18-crown-6 and 24-crown-8 bis aryl trifluorovinyl ethers is described. Thermally induced polymerization yields linear crown ether fluoropolymers with hexafluorocyclobutyl linkages. The polymers exhib

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d11f17f3a74e5cd79f2c448888ed9dea
https://doi.org/10.1002/macp.200300101

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Synthesis and comparison of CF3 versus CH3 substituted perfluorocyclobutyl (PFCB) networks for optical applications

Autor: Chris M. Topping, John Ballato, Shengrong Chen, Stephen H. Foulger, Jianyong Jin, Dennis W. Smith

Publikováno v: Journal of Polymer Science Part A: Polymer Chemistry. 42:5292-5300

A novel aryl trifluorovinyl ether monomer, 1,1,1-tris(4-trifluorovinyloxy-phenyl)-2,2,2-trifluoroethane (5), was prepared via a multistep reaction sequence adapted from previously reported procedures. Monomer 5 polymerizes by free-radical mediated th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::31f8a7a82971108109323489017815c0
https://doi.org/10.1002/pola.20342

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Synthesis and Characterization of Phenylphosphine Oxide Containing Perfluorocyclobutyl Aromatic Ether Polymers for Potential Space Applications

Autor: Norman Rice, Chris M. Topping, Jon Nebo, Shengrong Chen, Dennis W. Smith, Stephen H. Foulger, Bob H. Mojazza, S. Suresh, Jianyong Jin

Publikováno v: Macromolecules. 36:9000-9004

A novel class of phenylphosphine oxide (PPO) containing perfluorocyclobutyl (PFCB) polymers has been developed for potential use as multifunctional materials in space environments. The reaction of p-BrArOCFCF2 (for Ar = phenyl and biphenyl) with tert

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b928aef50ef18c4e68e4505657b31ab0
https://doi.org/10.1021/ma035241g

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Perfluorocyclobutyl Copolymers for Microphotonics

Autor: John Ballato, Suresh M. Kumar, Dennis W. Smith, Stephen H. Foulger, Hiren V. Shah, Chris M. Topping, Shengrong Chen

Publikováno v: Advanced Materials. 14:1585-1589

The copolymerization of aryl bis- and tris-trifluorovinyl other monomers aromatic perfluorocyclobutyl (PFCB) polymers, via thermally initiated stepgrowth cycloaddition chemistry. PFCB polymers and their copolymers enjoya unique combination of attribu

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https://doi.org/10.1002/1521-4095(20021104)14:21<1585::aid-adma1585>3.0.co

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