Syntheses of new functionalized azobenzenes for potential molecular electronic devices
摘要:
New non-symmetrical azobenzene derivatives have been synthesized as potential molecular electronic switching device candidates. The Oxone 0 mediated oxidation of anilines provided nitroso-functionalized arenes, which were then condensed with substituted anilines to provide a series of azobenzene derivatives that could be further converted into oligo(phenylene ethynylene)s or diazonium salts. The resulting thiolacetates, thiols, or diazonium salts are capable of forming molecular layers on the surface of gold or silicon, thereby paving the way for molecular electronics testing. (c) 2006 Elsevier Ltd. All rights reserved.
[EN] DICHROIC AZO-AZOMETHINE DYES FOR LIQUID CRYSTAL COMPOSITIONS<br/>[FR] COLORANTS DICHROÏQUES D'AZO-AZOMÉTHINE POUR COMPOSITIONS À CRISTAUX LIQUIDES
申请人:BASF SE
公开号:WO2020156832A1
公开(公告)日:2020-08-06
Dichroic azo-azomethine dyes of formula (A) or (B), wherein Ar1 to Ar10 are specific (hetero)aromatic moieties and L is a linking group, as defined in the present claims, a dichroic dye mixture comprising said azo-azomethine dyes and a process for preparing the dyes are provided. The dyes are well suited for combination with liquid crystal material for use, inter alia, in a light absorption anisotropic element, for example,in a switchable optical device or an optically anisotropic film.
Tetrapodal Molecular Switches and Motors: Synthesis and Photochemistry
作者:Kuang-Yen Chen、Sander J. Wezenberg、Gregory T. Carroll、Gábor London、Jos C. M. Kistemaker、Thomas C. Pijper、Ben L. Feringa
DOI:10.1021/jo501190f
日期:2014.8.1
The design, synthesis, and dynamic behavior of a series of novel tetrapodal molecular switches and motors containing common functional groups for attachment to various inorganic and organic surfaces are presented. Using a Diels–Alder reaction, an anthracene unit with four functionalized alkyl substituents (“legs”) was coupled to maleimide-functionalized molecular switches or motors under ambient conditions
A compound serving as a dichroic pigment which has a maximum absorption wavelength in a range of 350 nm to 510 nm is represented by the following Formula (1):
In Formula (1), R
1
represents a hydrogen atom or a C1-C20 alkyl group; R
2
through R
4
are substituents which are not hydrogen atoms and each independently represent a C1-C4 alkyl group; n, m, and p are each independently an integer of 0 to 2; and Ar
1
represents a nitrogen-containing saturated heterocyclic group which is a 5 to 8-membered ring and in which (i) N is bonded to a phenylene group and (ii) at least one β-position is an oxygen atom or a sulfur atom.
Verfahren zur Herstellung von gegebenenfalls zelligen Polyurethan-Polyharnstoff-Formkörpern
申请人:BASF Aktiengesellschaft
公开号:EP0109624A2
公开(公告)日:1984-05-30
Die Erfindung betrifft ein Einstufen-Verfahren zur Herstellung von zelligen oder vorzugsweise kompakten Polyurethan-Polyharnstoff-Formkörpern, vorzugsweise mit Hilfe der Reaktionsspritzgußtechnik, durch Umsetzung von organischen Polyisocyanaten, Polyolen und gegebenenfalls substituierten Diaminoazobenzolen, vorzugsweise 4,4'- und/oder 2,4'-Diaminoazobenzolen, Diaminoazopyridinen und/oder deren Oxide in Gegenwart von Katalysatoren sowie gegebenenfalls Treibmitteln, Hilfs- und Zusatzstoffen.
Provided is a composition which is to be a raw material of a polarizing film having excellent light fastness. The composition includes a polymerizable liquid crystal compound and a compound represented by the following formula (1):
wherein E represents an electron attractive group having at least 3 carbon atoms or the following group:
wherein R represents a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms;
Ar represents a group selected from the following groups:
and A represents a group selected from the following groups:
wherein R2, R3 and R4, and l, m, n, p, and q are defined in the specification.
本发明提供了一种组合物,该组合物可作为具有优异耐光性的偏光膜的原料。该组合物包括一种可聚合液晶化合物和一种由下式(1)表示的化合物:
其中 E 代表至少有 3 个碳原子的引电子基团或以下基团:
其中 R 代表氢原子或具有 1 至 20 个碳原子的烃基;
Ar 代表选自以下基团的一个基团:
和 A 代表选自以下组别的一个基团:
其中 R2、R3 和 R4 以及 l、m、n、p 和 q 的定义见说明书。