Synthesis of Thiophene-Based Building Blocks via Facile <i>α</i>-Monoiodination
作者:Ulrik Boas、Anantharaman Dhanabalan、Daniel R. Greve、E. W. Meijer
DOI:10.1055/s-2001-13361
日期:——
A new procedure to selectively α-monoiodinate symmetrical thiophene-capped segments is described. The monoiodinated derivatives are further modified, giving access to a variety of thiophene-based building blocks, which are useful for e.g. oligomer synthesis via segmental coupling.
The synthesis of 3H-naphtho[2,1-b]pyrans linked to mono-, di-, or terthiophene via an acetylenic junction is described (Schemes 2 and 3). The synthetic approaches involve successive Sonogashira coupling reactions. The photochromic properties in solution of these novel materials were investigated under continuous irradiation.
Charge Transfer through Terthiophene End-Capped Poly(arylene ethynylene)s
作者:Alison M. Funston、Eric E. Silverman、John R. Miller、Kirk S. Schanze
DOI:10.1021/jp0364396
日期:2004.2.1
Two poly(aryleneethynylene)s (PAEs) that are end-capped with α-terthiophene (T3) groups were prepared and structurally characterized by proton NMR, GPC, and optical spectroscopy. One of the polymers (T3PPE13) features a backbone structure that alternates phenylene ethynylene and bis(alkoxy)phenylene ethynylene repeat units. The second T3 end-capped polymer (T3PBpE12) features an alternating structure
制备了两种用 α-三噻吩 (T3) 基团封端的聚 (亚芳基乙炔基) (PAE),并通过质子 NMR、GPC 和光学光谱对其结构进行了表征。其中一种聚合物 (T3PPE13) 具有交替亚苯基亚乙炔基和双(烷氧基)亚苯基亚乙炔基重复单元的主链结构。第二种 T3 封端聚合物 (T3PBpE12) 具有交替结构,具有亚联苯乙炔基和双(烷氧基)亚苯基亚乙炔基重复序列。T3 封端聚合物的吸收光谱与缺少 T3 端基的相应“母体聚合物”(分别为 PPE164 和 PBpE21)的吸收光谱几乎相同。相比之下,虽然母体聚合物的荧光光谱主要是蓝色荧光,λmax = 425 nm,封端聚合物的发射光谱包含显着的绿色荧光贡献(λ = 500-550 nm)。这表明单线态激子被 T3 端基有效捕获。脉冲放射分解研究...
Highly sensitive oligothiophene-phenylamine-based dual-functional fluorescence “turn-on” sensor for rapid and simultaneous detection of Al 3+ and Fe 3+ in environment and food samples
作者:Zongrang Guo、Qingfen Niu、Tianduo Li
DOI:10.1016/j.saa.2018.04.022
日期:2018.7
"turn-on" sensor 3TP based on oligothiophene-phenylamine Schiffbase has been synthesized for discrimination and simultaneous detection of both Al3+ and Fe3+ ions with high selectivity and anti-interference over other metal ions. Sensor 3TP displayed a very fast fluorescence-enhanced response towards Al3+ and Fe3+ ions with low detection limits (0.177μM for Al3+ and 0.172μM for Fe3+) and wide pH response
THIOPHENE COMPOUND HAVING SULFONYL GROUP AND PROCESS FOR PRODUCING THE SAME
申请人:Kakiuchi Nobuyuki
公开号:US20090127491A1
公开(公告)日:2009-05-21
A thiophene compound having sulfonyl groups which is represented by the formula [1]. It has high heat resistance and high unsusceptibility to oxidation and can improve solubility and dispersibility in various solvents.
[In the formula, R
1
and R
2
each independently represents hydrogen, halogeno, cyano, etc.; and R
3
and R
3′
each independently represents C
1-20
alkyl, C
1-20
haloalkyl, phenyl optionally substituted by W, thienyl optionally substituted by W, etc. (W represents chlorine, etc.).]