Amino(oligo)thiophene dyes, preparation thereof, and optical methods of use
申请人:The University of Connecticut
公开号:US08129532B2
公开(公告)日:2012-03-06
Amino(oligo)thiophene dyes useful for studying the electrophysiology of organelles, cells, and tissues are described. Compared to previously known dyes, the amino(oligo)thiophene dyes exhibit improved (faster) response to membrane potential changes, as well as the ability to be excited by 1064 nanometer femtosecond pulses. Methods of preparing the amino( oligo )thiophene dyes are also described.
AMINO(OLIGO)THIOPHENE DYES, PREPARATION THEREOF, AND OPTICAL METHODS OF USE
申请人:Loew Leslie M.
公开号:US20090042227A1
公开(公告)日:2009-02-12
Amino(oligo)thiophene dyes useful for studying the electrophysiology of organelles, cells, and tissues are described. Compared to previously known dyes, the amino(oligo)thiophene dyes exhibit improved (faster) response to membrane potential changes, as well as the ability to be excited by 1064 nanometer femtosecond pulses. Methods of preparing the amino(oligo)thiophene dyes are also described.
Synthesis and Solvatochromic Properties of Donor-Acceptor-Substituted Oligothiophenes
作者:Franz Effenberger、Frank Wuerthner、Felix Steybe
DOI:10.1021/jo00112a032
日期:1995.4
The Pd-catalyzed cross coupling reaction of electron donor-substituted thiophenes 1 with electron acceptor-substituted halothiophenes 2,10 via organozinc intermediates or organotin compounds 5 to give bi-, ter-, and quaterthiophenes 3, 4, 6, 8, 12, 13, and 14 is described. (Dimethylamino)-bithiophenes 8 with acceptor groups of varying reactivity were prepared via 5d in 60-80% yield, whereas bithiophenes 6d,e were obtained as a mixture with phenylthiophenes 7d,e. Symmetrical substituted byproducts 11 were formed in the conversion of 1b with bromothiophenes 10 via organozinc compounds yielding oligothiophenes 6b and 12. The ter- and quaterthiophenes 13 and 14 were isolated in about 50-70% yield. The electronic interactions between donor and acceptor end groups in the conjugated bithiophenes 3, 4, and 8 are expressed in the intensive and markedly solvatochromic CT transitions. The solvatochromic behavior of 3, 4, and 8 was determined by linear regression analyses of absorption maxima in 11 solvents, whereby bithiophene 3d was found to be a very appropriate indicator dye whose absorption wavenumbers ($) over bar nu(max)(3d) in aliphatic and dipolar aprotic and-on consideration of the polarizability correction term d delta-in aromatic and chlorinated solvents excellently correlate with the pi* values defined by Kamlet and Taft.
FLUORESCENT DYE, PREPARATION METHOD AND USES THEREOF
申请人:FLUORESCENCE DIAGNOSIS (SHANGHAI) BIOTECH COMPANY LTD.
公开号:US20220214351A1
公开(公告)日:2022-07-07
A fluorescent dye, as well as a preparation method and uses thereof, wherein the fluorescent dye is sensitive and specific to viscosity and has low background fluorescence; it can also be used as a fluorescent activated and lighted probe used for fluorescent labeling, quantification or monitoring of protein, enzymes or nucleic acid.