二取代的乙炔的分解聚合含有杂环,如噻吩,呋喃,苯并[ b ]使用NbCl检查噻吩和苯并噻唑5,TACL 5,和WCL 6。含噻吩的单体聚合后以中等收率得到相对较高分子量的聚合物。含苯并[ b ]噻吩的单体也聚合得到具有相对高分子量的聚合物。另一方面,含呋喃和苯并噻唑的单体表现出低的易位聚合性,并且该聚合没有提供高分子量的聚合物。具有杂环[poly(1a)和poly(3a)的聚(1-己基-2-芳基乙炔)),方案1]发出蓝色光,并且发射最大值约为480 nm。含杂环的聚(1-苯基-2-芳基乙炔)[poly(1b)]和聚(1-芴基-2-芳基乙炔)[poly(3d)]显示绿色和黄色发射,且发射最大值分别是520和540 nm。具有杂环的聚(二取代乙炔)的发射波长与没有杂环的相应聚(二取代乙炔)的发射波长几乎相同。但是,与不含杂环的相应聚合物相比,含杂环的聚合物显示出较高的荧光量子产率。二芳基乙炔聚
membranes in DMF lowered membrane densities, and consequently their gas permeability significantly increased. The oxygen permeability coefficients of silanol group-containing membranes (3a and 3b) were 210 and 1300 barrers, respectively. These silanol-functionalized poly(diphenylacetylene) membranes were found to exhibit very high gas permeability irrespective of the presence of the polar silanol groups
Tetraarylcyclobutadienecyclopentadienylcobalt Complexes: Synthesis, Electronic Spectra, Magnetic Circular Dichroism, Linear Dichroism, and TD DFT Calculations
作者:Gregg S. Kottas、Thierry Brotin、Peter F. H. Schwab、Kamal Gala、Zdeněk Havlas、James P. Kirby、John R. Miller、Josef Michl
DOI:10.1021/om400403j
日期:2014.7.14
a series of its new substituted derivatives have been prepared. The electronic states of a few representatives have been characterized by absorption and magneticcirculardichroism. Time-dependent density functional theory has been used to arrive at spectral assignments for several prominent low-energy bands. The absorption spectra of the radical ions of 1 have also been recorded.
showed green-colored and yellow-colored emissions, and the emission maxima were 520 and 540 nm, respectively. The emission wavelengths of poly(disubstitutedacetylene)s having heterocycles were almost the same as those of the corresponding poly(disubstitutedacetylene)s without heterocycles. However, heterocycle-containing polymers showed high fluorescence quantum yields compared to the corresponding polymers
二取代的乙炔的分解聚合含有杂环,如噻吩,呋喃,苯并[ b ]使用NbCl检查噻吩和苯并噻唑5,TACL 5,和WCL 6。含噻吩的单体聚合后以中等收率得到相对较高分子量的聚合物。含苯并[ b ]噻吩的单体也聚合得到具有相对高分子量的聚合物。另一方面,含呋喃和苯并噻唑的单体表现出低的易位聚合性,并且该聚合没有提供高分子量的聚合物。具有杂环[poly(1a)和poly(3a)的聚(1-己基-2-芳基乙炔)),方案1]发出蓝色光,并且发射最大值约为480 nm。含杂环的聚(1-苯基-2-芳基乙炔)[poly(1b)]和聚(1-芴基-2-芳基乙炔)[poly(3d)]显示绿色和黄色发射,且发射最大值分别是520和540 nm。具有杂环的聚(二取代乙炔)的发射波长与没有杂环的相应聚(二取代乙炔)的发射波长几乎相同。但是,与不含杂环的相应聚合物相比,含杂环的聚合物显示出较高的荧光量子产率。二芳基乙炔聚