- Synthesis and properties of cyclic ethylene-bridged 3,6-fluorene dimer and its linear analogues
-
Three oligomers of ethylene-bridged 3,6-fluorene were synthesized starting from phenanthrenequinone. McMurry reaction was applied to synthesize the cyclic compound. Horner-Emmons reaction was used to synthesize the linear compounds with all-trans configuration. The crystal structure of the cyclic compound was described. The optical and electronic properties of these compounds were fully characterized and compared.
- Song, Yabin,Xu, Wei,Zhu, Daoben
-
-
Read Online
- Oligo(3,6-phenanthrene ethynylenes): Synthesis, characterization, and photoluminescence
-
A series of highly fluorescent, oligo(3,6-phenanthrene ethynylenes) (F1-F7) were synthesized, and their photophysical behavior was systematically investigated. They emitted light with highly emissive quantum yields, up to 0.92. Emissive wavelengths of these compounds relied on the number of phenanthrene blocks existing in the oligomers. Red-shifted emissions were observed as the number of phenanthrenes increased. On the basis of theoretical calculations, helical structures could be formed for F4-F7, indicating that the excimer emissions might be observed for F4-F7 due to the intramolecular π-π stackings of phenanthrenes in the helical structures. However, excimer emissions were only observed for F5-F7 in dilute cyclohexane and for F6 and F7 in dilute methylene chloride, respectively. No excimer emission was observed for F4-F7 in dilute tetrahydrofuran due to the degree of solvation.
- Li, Jichao,Hu, Gongfang,Wang, Ningning,Hu, Tao,Wen, Qiaodong,Lu, Ping,Wang, Yanguang
-
-
Read Online
- COMPOUND FOR ORGANIC ELECTRONIC ELEMENT, ORGANIC ELECTRONIC ELEMENT USING THE SAME, AND A ELECTRONIC DEVICE THEREOF
-
The present invention relates to a compound for an organic electronic element containing triphenylene derivatives, and an organic electronic element and an electronic device using the same. By the present invention, the luminance efficiency, color purity, and lifetime of the element can be increased, and the driving voltage can be decreased. [Reference numerals] (401) Substrate;(402) Anode;(404) Hole transporting layer;(405) Light-emitting layer;(406) Electron transporting layer;(408) Cathode
- -
-
Paragraph 0084-0088
(2019/02/28)
-
- DICYANO N-HETEROCYCLIC COMPOUND, LIGHT-EMITTING MATERIAL, AND LIGHT-EMITTING ELEMENT IN WHICH SAME IS USED
-
Provided are: a dicyano N-heterocyclic compound represented by formula (I) (in the formula, R3 represents an electron-donating group, and n represents the number of repetitions of the content in brackets and is 0 or 1), the compound having exce
- -
-
Paragraph 0181-0184
(2019/11/11)
-
- Novel pyrazino-phenanthroline based rigid donor-π-acceptor compounds: A detail study of optical properties, acidochromism, solvatochromism and structure-property relationship
-
Donor-π-acceptor-π-auxiliary acceptor type compounds have been designed and synthesized to study their rigidity and structural effects on optical properties. Structural variation is achieved by changing the central π-conjugated core with naphthalene, acen
- Kothavale, Shantaram,Sekar, Nagaiyan
-
-
- With dibenzo [f, h] quinaline * [...] electroluminescent metal complexes
-
This invention relates to electroluminescent metal complexes of the formula (I), or (II), a process for their preparation, electronic devices comprising the metal complexes and their use in electronic devices, especially organic light emitting diodes (OLE
- -
-
Paragraph 0343; 0344
(2016/10/10)
-
- 2-(PHENYL OR HETEROCYCLIC) - 1H-PHENANTHRO [9,10-D] IMIDAZOLES
-
The invention encompasses novel compounds of Formula (I) or pharmaceutically acceptable salts thereof. These compounds are inhibitors of the microsomal prostaglandin E synthase-1 (mPGES-1) enzyme and are therefore useful to treat pain and/or inflammation from a variety of diseases or conditions, such as osteoarthritis, rheumatoid arthritis and acute or chronic pain. Methods of treating diseases or conditions mediated by the mPGES-1 enzyme and pharmaceutical compositions are also encompassed.
- -
-
Page/Page column 50
(2008/06/13)
-