Extended porphyrinoid chromophores: heteroporphyrins fused to phenanthrene and acenaphthylene
作者:Timothy D. Lash、Patrick J. Rauen
DOI:10.1016/j.tet.2021.132481
日期:2021.11
Fusion of aromaticsubunits onto porphyrin chromophores produces variable results and in some cases only minor bathochromic shifts are observed. In order to extend these observations, a series of oxa-, thia- and selenaporphyrins with fused acenaphthylene or phenanthrene units have been synthesized. Phenanthro[5,6-b]porphyrins were previously prepared via conventional ‘2 + 2’ MacDonald condensations
Pyrrolesannulated with polycyclicaromaticcompounds, which are expected to be good precursormolecules for lowbandgappolymers, are prepared by the reaction of aromatic nitro compounds with ethyl isocyanoacetate and the subsequent deethoxycarbonylation.
Synthesis and Properties of Fused-Ring-Expanded Porphyrins that were Core-Modified with Group 16 Heteroatoms
作者:Hai-Jun Xu、John Mack、Di Wu、Zhao-Li Xue、Ana B. Descalzo、Knut Rurack、Nagao Kobayashi、Zhen Shen
DOI:10.1002/chem.201200956
日期:2012.12.21
applications. The scope for further fine‐tuning of these optical properties based on additional structural modifications, such as the incorporation of fused benzene rings to form ABAB structures by using a thiophene precursor with a fused bicyclo[2.2.2]octadiene ring and the introduction of various substituents onto the meso‐phenyl rings, is also examined.
A series of porphyrins fused with acenaphthylene, phenanthroline, and benzofluoranthene polycyclic aromatic rings were prepared by means of a 3+1 porphyrin synthesis approach and subsequent retro‐Diels–Alder reaction of bicyclo[2.2.2]octadiene‐fused precursors. Analysis of the magnetic circular dichroism spectra and the results of time‐dependent DFT calculations are used to identify the reasons for
OPTICAL FILTER AND ITS APPLICATIONS, AND PORPHYRIN COMPOUND USED IN OPTICAL FILTER
申请人:Mitsui Chemicals, Inc.
公开号:EP1813615A1
公开(公告)日:2007-08-01
An optical filter of the present invention contains at least one tetra-acenaphthoporphyrin compound. The tetra-acenaphthoporphyrin compound has preferably its absorption maximum in a wavelength range of from 530 to 570 nm and a ratio of an absorption coefficient at 550 nm to an absorption coefficient at 525 nm of not less than 1.2. Also, a percentage of light transmittance at 550 nm to light transmittance at 525 nm is preferably not more than 85%.
According to the present invention, it is possible to provide the optical filter which can eliminate an unnecessary light mainly existing in a wavelength of from 520 to 700 nm and is excellent in durability. A display unit using the optical filter of the present invention can improve contrast in a bright place, and improve color purity of luminescent color.