Oligophenylene 2,4,6-triarylpyridines and analogous diaza-p-terphenyls, diaza-p-quaterphenyls and diaza-p-quinquephenyls with luminiscent activity

Kurfürst, Antonín; Lhoták, Pavel; Petru, M; Kuthan, J.

doi:10.1135/cccc19890462

Cited by 9 publications

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Die erhaltenen Ringsysteme sind unserer Kenntnis nach neu, lediglich bei 7 und 11 existieren die Grundkörper 2,4,6-Triphenylpyridin [13] und 2,4-Diphenyl-6-[4-(4,6-diphenylpyrid-2-yl)phenyl]pyridin [14]. Zur Charakterisierung von 7, 9, 11 und 13a -c wurden 1 Hund 13 C-NMR-spektroskopische Untersuchungen einschließlich von NOE-, INDOR-, 1 H, 13 C-HETCOR-und 1 H, 13 C-long range-HETCOR-Messungen durchgeführt (Tabellen 1 und 2).…”

unclassified

Synthese von Oligo(p-phenylen-m-pyridindiyl)en

Meier

Hormaza

2000

J. prakt. Chem.

View full text Add to dashboard Cite

637Oligomere und Polymere aus Arylen-und Hetarylen-Bausteinen stellen ein aktuelles Gebiet der organischen Synthese und Materialforschung dar [1,2]. Vor kurzer Zeit berichteten wir über gekreuzt konjugierte Oligomere aus Chalkonbausteinen [3,4]. Enon-Gruppen eignen sich in vielfältiger Weise für den Aufbau von 5-, 6und 7-Ring-Heterocyclen. So kann man z.B. aus 2-Propenonen Pyrrol-[5, 6], Pyridin-[5, 7] und 1,4-Diazepin-Derivate [8] herstellen. Aus den Oligochalkonen sollten somit Oligohetarylene entstehen. Stickstoffatome in Hetarylenbausteinen haben den Vorteil, eine einfache Ionenbildung zu erlauben. Eine (partielle) Protonierung gewährleistet einen Ladungstransfer in der Kette und ein "Protonen-Hopping" zwischen den Ketten. Die Protonierung stellt somit eine "Dotierung" dar. Vor einiger Zeit haben wir Oligo-und Poly(pyridin-2,5diylvinylen)e hergestellt und entsprechende Untersuchungen durchgeführt [9 -11]. In der vorliegenden Arbeit wird die Synthese von Oligo(p-phenylen-m-pyridindiyl)en 1 mit gekreuzter Konjugation beschrieben. Zur Verbesserung der Löslichkeit haben wir die Benzolbausteine mit 2,5-ständigen Propoxyketten ausgestattet. Dieses Substitutionsmuster und diese Seitenkettenlänge haben sich bei Leitfähigkeitsuntersuchungen besonders bewährt [12].

show abstract

unclassified

Synthese von Oligo(p-phenylen-m-pyridindiyl)en

Meier

Hormaza

2000

J. prakt. Chem.

View full text Add to dashboard Cite

show abstract

Preparation and Properties of Novel Triphenylpyridine‐Containing Hyperbranched Polyimides Derived from 2,4,6‐Tris(4‐aminophenyl)pyridine under Microwave Irradiation

Chen

et al. 2010

Macro Chemistry & Physics

View full text Add to dashboard Cite

A novel ${\rm BB'}_{{\rm 2}} $‐type triamine was synthesized for the first time and employed to prepare a series of amine‐ and anhydride‐terminated triphenylpyridine‐containing hyperbranched polyimides under microwave irradiation. The structure of the triamine monomer and polymers were verified by FTIR and 1H NMR spectroscopy. The predominantly amorphous polyimides were soluble in m‐cresol, NMP, DMSO, DMAc and DMF at room temperature or upon heating. The polymers showed glass transition temperatures above 310 °C and a 5 and 10% weight‐loss temperature above 482 and 559 °C. Tensile strength and modulus were higher than 53.1 MPa and 1.01 GPa, respectively. AM‐HBPI‐2 and AD‐HBPI‐2 showed UV‐Vis absorptions in the region 200–400 and 200–350 nm and displayed strong purple and blue fluorescence.magnified image

show abstract

Properties and application of aryl-substituted azines (review)

Borovik¹,

Shkurko²

1997

Chem Heterocycl Compd

View full text Add to dashboard Cite

Derivatives of pyridine and di-and triazines containing aryl and heteroaryl groups as substituents exhibit a combination of properties that determine the wide range of their practical applications in scientific investigations, technology, medicine, and agriculture. Interesting properties appear even when phenyl substituents not containing functional groups in the benzene ring are introduced into the azine ring. Thus, 2,3-diphenylpyrazine has a particular smell and taste, making it possible to use it in the food industry as a flavoring additive [1]. Such "aromatic" qualities are also characteristic of other phenylpyrazines with various mutual arrangements of the phenyl and aliphatic substituents in the heterocycle. Their application makes it possible to vary the smell and flavor of food products [2]. They are also used in multicomponent compositions with the mono-, di-, tri-,

show abstract

Oligophenylene 2,4,6-triarylpyridines and analogous diaza-p-terphenyls, diaza-p-quaterphenyls and diaza-p-quinquephenyls with luminiscent activity

Cited by 9 publications

References 0 publications

Synthese von Oligo(p-phenylen-m-pyridindiyl)en

Synthese von Oligo(p-phenylen-m-pyridindiyl)en

Preparation and Properties of Novel Triphenylpyridine‐Containing Hyperbranched Polyimides Derived from 2,4,6‐Tris(4‐aminophenyl)pyridine under Microwave Irradiation

Properties and application of aryl-substituted azines (review)

Contact Info

Product

Resources

About