The Experts below are selected from a list of 27 Experts worldwide ranked by ideXlab platform
Meiran Xie - One of the best experts on this subject based on the ideXlab platform.
-
high dielectric performance of Tactic polynorbornene derivatives synthesized by ring opening metathesis Polymerization
Journal of Polymer Science Part A, 2013Co-Authors: Zewang You, Danyi Gao, Ouyue Jin, Meiran XieAbstract:Functional polynorbornenes (PNBEs) containing pyrrolidine moiety and bis(trifluoromethyl)biphenyl side group were synthesized via ring-opening metathesis Polymerization (ROMP), and the microstructure of Polymer chain was characterized by NMR spectroscopy. Poly(N-3,5-bis(trifluoromethyl)biphenyl-norbornene-pyrrolidine) (PTNP) and poly(N-phenyl-norbornene-pyrrolidine) (PPNP) are supposed to have practically trans double bonds and adopt isoTactic syn conformation, whereas poly(N-3,5-bis(trifluoromethyl)biphenyl-norbornene-dicarboximide) (PTNDI) has both trans and cis double bonds and aTactic microstructure. PTNP, PTNDI, and PPNP have much different dielectric constants of 20, 7, and 3, respectively, which is attributed to both the polar 3,5-bis(trifluoromethyl)biphenyl group and the stereoregular chain structure. The existence of rigid pyrrolidine moiety has a positive contribution to form the Tactic Polymer chain during ROMP. Polymers are highly thermal stable up to ∼300 °C. Having good dielectric properties and thermal stability, these functional PNBEs are expected as the potential dielectric material in thin film capacitors. © 2012 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2013
-
High dielectric performance of Tactic polynorbornene derivatives synthesized by ring‐opening metathesis Polymerization
Journal of Polymer Science Part A: Polymer Chemistry, 2012Co-Authors: Zewang You, Danyi Gao, Ouyue Jin, Meiran XieAbstract:Functional polynorbornenes (PNBEs) containing pyrrolidine moiety and bis(trifluoromethyl)biphenyl side group were synthesized via ring-opening metathesis Polymerization (ROMP), and the microstructure of Polymer chain was characterized by NMR spectroscopy. Poly(N-3,5-bis(trifluoromethyl)biphenyl-norbornene-pyrrolidine) (PTNP) and poly(N-phenyl-norbornene-pyrrolidine) (PPNP) are supposed to have practically trans double bonds and adopt isoTactic syn conformation, whereas poly(N-3,5-bis(trifluoromethyl)biphenyl-norbornene-dicarboximide) (PTNDI) has both trans and cis double bonds and aTactic microstructure. PTNP, PTNDI, and PPNP have much different dielectric constants of 20, 7, and 3, respectively, which is attributed to both the polar 3,5-bis(trifluoromethyl)biphenyl group and the stereoregular chain structure. The existence of rigid pyrrolidine moiety has a positive contribution to form the Tactic Polymer chain during ROMP. Polymers are highly thermal stable up to ∼300 °C. Having good dielectric properties and thermal stability, these functional PNBEs are expected as the potential dielectric material in thin film capacitors. © 2012 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2013
Zewang You - One of the best experts on this subject based on the ideXlab platform.
-
high dielectric performance of Tactic polynorbornene derivatives synthesized by ring opening metathesis Polymerization
Journal of Polymer Science Part A, 2013Co-Authors: Zewang You, Danyi Gao, Ouyue Jin, Meiran XieAbstract:Functional polynorbornenes (PNBEs) containing pyrrolidine moiety and bis(trifluoromethyl)biphenyl side group were synthesized via ring-opening metathesis Polymerization (ROMP), and the microstructure of Polymer chain was characterized by NMR spectroscopy. Poly(N-3,5-bis(trifluoromethyl)biphenyl-norbornene-pyrrolidine) (PTNP) and poly(N-phenyl-norbornene-pyrrolidine) (PPNP) are supposed to have practically trans double bonds and adopt isoTactic syn conformation, whereas poly(N-3,5-bis(trifluoromethyl)biphenyl-norbornene-dicarboximide) (PTNDI) has both trans and cis double bonds and aTactic microstructure. PTNP, PTNDI, and PPNP have much different dielectric constants of 20, 7, and 3, respectively, which is attributed to both the polar 3,5-bis(trifluoromethyl)biphenyl group and the stereoregular chain structure. The existence of rigid pyrrolidine moiety has a positive contribution to form the Tactic Polymer chain during ROMP. Polymers are highly thermal stable up to ∼300 °C. Having good dielectric properties and thermal stability, these functional PNBEs are expected as the potential dielectric material in thin film capacitors. © 2012 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2013
-
High dielectric performance of Tactic polynorbornene derivatives synthesized by ring‐opening metathesis Polymerization
Journal of Polymer Science Part A: Polymer Chemistry, 2012Co-Authors: Zewang You, Danyi Gao, Ouyue Jin, Meiran XieAbstract:Functional polynorbornenes (PNBEs) containing pyrrolidine moiety and bis(trifluoromethyl)biphenyl side group were synthesized via ring-opening metathesis Polymerization (ROMP), and the microstructure of Polymer chain was characterized by NMR spectroscopy. Poly(N-3,5-bis(trifluoromethyl)biphenyl-norbornene-pyrrolidine) (PTNP) and poly(N-phenyl-norbornene-pyrrolidine) (PPNP) are supposed to have practically trans double bonds and adopt isoTactic syn conformation, whereas poly(N-3,5-bis(trifluoromethyl)biphenyl-norbornene-dicarboximide) (PTNDI) has both trans and cis double bonds and aTactic microstructure. PTNP, PTNDI, and PPNP have much different dielectric constants of 20, 7, and 3, respectively, which is attributed to both the polar 3,5-bis(trifluoromethyl)biphenyl group and the stereoregular chain structure. The existence of rigid pyrrolidine moiety has a positive contribution to form the Tactic Polymer chain during ROMP. Polymers are highly thermal stable up to ∼300 °C. Having good dielectric properties and thermal stability, these functional PNBEs are expected as the potential dielectric material in thin film capacitors. © 2012 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2013
Danyi Gao - One of the best experts on this subject based on the ideXlab platform.
-
high dielectric performance of Tactic polynorbornene derivatives synthesized by ring opening metathesis Polymerization
Journal of Polymer Science Part A, 2013Co-Authors: Zewang You, Danyi Gao, Ouyue Jin, Meiran XieAbstract:Functional polynorbornenes (PNBEs) containing pyrrolidine moiety and bis(trifluoromethyl)biphenyl side group were synthesized via ring-opening metathesis Polymerization (ROMP), and the microstructure of Polymer chain was characterized by NMR spectroscopy. Poly(N-3,5-bis(trifluoromethyl)biphenyl-norbornene-pyrrolidine) (PTNP) and poly(N-phenyl-norbornene-pyrrolidine) (PPNP) are supposed to have practically trans double bonds and adopt isoTactic syn conformation, whereas poly(N-3,5-bis(trifluoromethyl)biphenyl-norbornene-dicarboximide) (PTNDI) has both trans and cis double bonds and aTactic microstructure. PTNP, PTNDI, and PPNP have much different dielectric constants of 20, 7, and 3, respectively, which is attributed to both the polar 3,5-bis(trifluoromethyl)biphenyl group and the stereoregular chain structure. The existence of rigid pyrrolidine moiety has a positive contribution to form the Tactic Polymer chain during ROMP. Polymers are highly thermal stable up to ∼300 °C. Having good dielectric properties and thermal stability, these functional PNBEs are expected as the potential dielectric material in thin film capacitors. © 2012 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2013
-
High dielectric performance of Tactic polynorbornene derivatives synthesized by ring‐opening metathesis Polymerization
Journal of Polymer Science Part A: Polymer Chemistry, 2012Co-Authors: Zewang You, Danyi Gao, Ouyue Jin, Meiran XieAbstract:Functional polynorbornenes (PNBEs) containing pyrrolidine moiety and bis(trifluoromethyl)biphenyl side group were synthesized via ring-opening metathesis Polymerization (ROMP), and the microstructure of Polymer chain was characterized by NMR spectroscopy. Poly(N-3,5-bis(trifluoromethyl)biphenyl-norbornene-pyrrolidine) (PTNP) and poly(N-phenyl-norbornene-pyrrolidine) (PPNP) are supposed to have practically trans double bonds and adopt isoTactic syn conformation, whereas poly(N-3,5-bis(trifluoromethyl)biphenyl-norbornene-dicarboximide) (PTNDI) has both trans and cis double bonds and aTactic microstructure. PTNP, PTNDI, and PPNP have much different dielectric constants of 20, 7, and 3, respectively, which is attributed to both the polar 3,5-bis(trifluoromethyl)biphenyl group and the stereoregular chain structure. The existence of rigid pyrrolidine moiety has a positive contribution to form the Tactic Polymer chain during ROMP. Polymers are highly thermal stable up to ∼300 °C. Having good dielectric properties and thermal stability, these functional PNBEs are expected as the potential dielectric material in thin film capacitors. © 2012 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2013
Ouyue Jin - One of the best experts on this subject based on the ideXlab platform.
-
high dielectric performance of Tactic polynorbornene derivatives synthesized by ring opening metathesis Polymerization
Journal of Polymer Science Part A, 2013Co-Authors: Zewang You, Danyi Gao, Ouyue Jin, Meiran XieAbstract:Functional polynorbornenes (PNBEs) containing pyrrolidine moiety and bis(trifluoromethyl)biphenyl side group were synthesized via ring-opening metathesis Polymerization (ROMP), and the microstructure of Polymer chain was characterized by NMR spectroscopy. Poly(N-3,5-bis(trifluoromethyl)biphenyl-norbornene-pyrrolidine) (PTNP) and poly(N-phenyl-norbornene-pyrrolidine) (PPNP) are supposed to have practically trans double bonds and adopt isoTactic syn conformation, whereas poly(N-3,5-bis(trifluoromethyl)biphenyl-norbornene-dicarboximide) (PTNDI) has both trans and cis double bonds and aTactic microstructure. PTNP, PTNDI, and PPNP have much different dielectric constants of 20, 7, and 3, respectively, which is attributed to both the polar 3,5-bis(trifluoromethyl)biphenyl group and the stereoregular chain structure. The existence of rigid pyrrolidine moiety has a positive contribution to form the Tactic Polymer chain during ROMP. Polymers are highly thermal stable up to ∼300 °C. Having good dielectric properties and thermal stability, these functional PNBEs are expected as the potential dielectric material in thin film capacitors. © 2012 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2013
-
High dielectric performance of Tactic polynorbornene derivatives synthesized by ring‐opening metathesis Polymerization
Journal of Polymer Science Part A: Polymer Chemistry, 2012Co-Authors: Zewang You, Danyi Gao, Ouyue Jin, Meiran XieAbstract:Functional polynorbornenes (PNBEs) containing pyrrolidine moiety and bis(trifluoromethyl)biphenyl side group were synthesized via ring-opening metathesis Polymerization (ROMP), and the microstructure of Polymer chain was characterized by NMR spectroscopy. Poly(N-3,5-bis(trifluoromethyl)biphenyl-norbornene-pyrrolidine) (PTNP) and poly(N-phenyl-norbornene-pyrrolidine) (PPNP) are supposed to have practically trans double bonds and adopt isoTactic syn conformation, whereas poly(N-3,5-bis(trifluoromethyl)biphenyl-norbornene-dicarboximide) (PTNDI) has both trans and cis double bonds and aTactic microstructure. PTNP, PTNDI, and PPNP have much different dielectric constants of 20, 7, and 3, respectively, which is attributed to both the polar 3,5-bis(trifluoromethyl)biphenyl group and the stereoregular chain structure. The existence of rigid pyrrolidine moiety has a positive contribution to form the Tactic Polymer chain during ROMP. Polymers are highly thermal stable up to ∼300 °C. Having good dielectric properties and thermal stability, these functional PNBEs are expected as the potential dielectric material in thin film capacitors. © 2012 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2013
Charles M. Knobler - One of the best experts on this subject based on the ideXlab platform.
-
Stepwise Collapse of Monolayers of Cyclolinear Poly(organosiloxane)s at the Air/Water Interface: A Brewster-Angle Microscopy and Scanning Force Microscopy Study
The Journal of Physical Chemistry B, 1999Co-Authors: A. I. Buzin, Yu. K. Godovsky, Nataliya N. Makarova, Jiyu Fang, And Xizhang Wang, Charles M. KnoblerAbstract:We report studies of the collapse of monolayers of cyclolinear poly(organosiloxane)s that consist of six-membered rings joined by oxygen bridges and that contain two phenyl groups per monomer unit. Surface pressure−area isotherms show that these films undergo a stepwise collapse. The organization within the films has been examined at different stages of the collapse process by Brewster-angle microscopy. Films transferred to mica by the Langmuir−Blodgett technique have been imaged by scanning force microscopy. Five fractions of an aTactic Polymer with molecular weights (MW) ranging from 8900 to 85 000 and one trans-Tactic Polymer (MW = 8100) have been investigated. Bilayers of the fractions with the highest MW's appear in the form of islands but the bilayers in the other samples have the form of ribbons 50−250 nm wide.
