Yao, Shengxin; Gai, Lizhi; Jiang, Liang; Liu, Hui; Mack, John; Zhao, Yue; Chan, Kin Shing; Shen, Zhen published the artcile< Low-symmetry porphyrin analogues with flexible open-form dithienylethene moieties: Intense near IR Q bands>, Recommanded Product: 2,4,6-Trimethylbromobenzene, the main research area is symmetry porphyrin dithienylethene moiety intense near IR Q band.
Two low-symmetry porphyrinoids with a dithienylethene (DTE) moiety incorporated into the core macrocycle, that contain either a CHO or a bridging Me ether group, have been serendipitously synthesized through a Rothemund condensation reaction. X-ray crystal structures demonstrate that CHO and bridging Me ether groups on the DTE moiety changes the conformation of the macrocycle and significantly influences the relative energies of the frontier orbitals of the porphyrinoid π-system and results in a remarkable enhancement and broadening of the Q bands in the 450-800 nm region compared to those of conventional tetrapyrrolic porphyrins. The introduction of a DTE moiety provides an effective strategy for achieving the intense near-IR region absorption that is required for many of the practical applications of porphyrinoids, through a disruption of the macrocyclic π-system that is similar to that of naturally occurring corrins.
Dyes and Pigments published new progress about Bond angle, dihedral. 576-83-0 belongs to class bromides-buliding-blocks, and the molecular formula is C9H11Br, Recommanded Product: 2,4,6-Trimethylbromobenzene.
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary