Efficient Synthesis of 1,4-Dialkoxy and 1,4-Dialkyl Substituted 2,5-Divinylbenzenes via the Stille Reaction
作者:Walid A. Daoud、Michael L. Turner
DOI:10.1246/bcsj.78.367
日期:2005.2
An efficient palladium catalyzed cross coupling of tributyl(vinyl)stannane with dialkoxy and dialkyl substituted 1,4-dihalobenzenes is described. This single-step coupling provides an efficient synthesis of functionalized 2,5-divinylbenzenes, which are useful precursors of 1,4-phenylenevinylene copolymers.
Supramolecular Alternate Co-Assembly through a Non-Covalent Amphiphilic Design: Conducting Nanotubes with a Mixed D-A Structure
作者:K. Venkata Rao、Subi J. George
DOI:10.1002/chem.201202168
日期:2012.11.5
Mixing it up! The supramolecularalternate co‐assembly of extended π‐conjugated donor (D) and acceptor (A) molecules (i.e., oligo(phenylenevinylene) and perylenebisimide, respectively), to 1‐D nanotubes with an unprecedented mixed stack D–A molecular structure is presented, through a non‐covalent amphiphilicdesign strategy, which results in the formation of hydrogels with remarkable mechanical properties
Solvent Effects on the Photodegration of a PPV Derivative
作者:FLAVIA MARIA MARCONI、RODRIGO FERNANDO BIANCHI、ROBERTO MENDONçA FARIA、DéBORA TEREZIA BALOGH
DOI:10.1080/10587250210494
日期:2002.1.1
Display device
申请人:Katoh Takashi
公开号:US20070003735A1
公开(公告)日:2007-01-04
A novel display device is disclosed. The display device comprises a plural of liquid crystal layers disposed between a pair of electrodes respectively, wherein each of the liquid crystal layers shows an absorption peak at a different wavelength and comprises at least one dichroic dye and at least one dual-frequency switchable liquid crystal as a host liquid crystal.
LIGHT MODULATING MATERIAL AND LIGHT MODULATING METHOD
申请人:Kato Takashi
公开号:US20090297735A1
公开(公告)日:2009-12-03
A light modulating material comprising at least one kind of dichroic dye having a substituent represented by the following Formula (1) and at least one kind of host liquid crystal between a pair of electrodes, and changing the transmittance of incident light. In the formula (1), Het is oxygen atom or sulfur atom; B
1
and B
2
each independently represent an arylene group, a heteroarylene group or a bivalent cyclic aliphatic hydrocarbon group; Q
1
represents a bivalent linking group; C
1
represents an alkyl group, a cycloalkyl group, an alkoxy group) an alkoxycarbonyl group, an acyl group, or an acyloxy group; j represents 0 or 1; p, q and r each independently represent an integer from 0 to 5; n represents an integer from 1 to 3; (p+r)×n is an integer from 3 to 10.
-(Het)
j
-(B
1
)
p
-(Q
1
)
q
-(B
2
)
r
}
n
—C
1
Formula (1):