The present invention provides organic electroluminescent elements selected from polyacene derivatives represented by general formula (I) below:
[wherein, R
1
, R
2
, R
3
, R
4
, R
5
, R
6
, R
7
, R
8
, R
9
, R
10
, A
1
and A
2
, which are the same or different, each represents hydrogen atom, a hydrocarbon group, etc., and n denotes an integer of not less than 1]. The organic electroluminescent elements of the present invention can provide materials for organic electroluminescent elements and organic electroluminescent elements, which are excellent in stability, durability, luminance and luminance efficiency.
The unusual conformational isomer 1b(2) of 9,10-dihydro-1,2,3,4,5,6,7,8-octapropylanthracene with three continuous propyl groups up was selectively prepared.
The present invention relates to polyacene derivatives represented by general formula (I) below:
1
(wherein R
1
to R
10
, etc. each represents hydrogen atom, hydrocarbon group, or an alkoxy group; A
1
and A
2
are hydrogen atom, a halogen atom, a hydrocarbon group, an alkoxy group, cyano group, etc.; n is an integer of not less than 1; R
6
and R
7
may be linked to each other to form a ring); and a process for preparing the polyacene derivatives from polyhydro compounds as well as electrically conductive materials comprising the polyacene derivatives. According to the process for preparing the polyacene derivatives of the present invention, optional substituents can be introduced into any carbon atoms of the polyacene, and the number of aromatic rings can be increased.
A novel zirconium-mediated synthesis of substituted thiophene-fused acenes is described. A variety of substituents, such as alkyl, aryl, silyl, iodo, and alkynyl groups, could be introduced to the acene skeleton by this method. Moreover, the double coupling with tetraiodothiophene gave the corresponding dianthrathiophene.
Preparation and characterization of 1,1′-diphosphaferrocenes with linearly fused six-membered carbocycles
Zirconacyclopentadiene-mediated homologation method was applied to preparation of a couple of 1,1'-diphosphaferrocene derivatives with linearly fused six-membered carbocycles. The solid-state structure of bis(hexapropyldihydro-iso-naphthophospholyl)iron(II) complex (1) was studied by X-ray single-crystal structure determination. (c) 2006 Elsevier B.V. All rights reserved.