Synthesis, Structure, Photophysical Properties, and Photostability of Benzodipyrenes

Autor:	Ana de Bettencourt-Dias, Wesley A. Chalifoux, Jorge H. S. K. Monteiro, Vincent J. Catalano, Wenlong Yang
Rok vydání:	2018
Předmět:	chemistry.chemical_classification 010405 organic chemistry Chemistry Singlet oxygen Organic Chemistry Alkyne General Chemistry 010402 general chemistry Ring (chemistry) Photochemistry 01 natural sciences Catalysis 0104 chemical sciences Pentacene chemistry.chemical_compound
Zdroj:	Chemistry – A European Journal. 25:1441-1445
ISSN:	1521-3765 0947-6539
Popis:	This work explores the syntheses, structures, photophysical properties, and photostability of benzodipyrenes (BDPs). BDPs were synthesized through an InCl3 -AgNTf2 -catalyzed, four-fold alkyne benzannulation reaction. The structures of BDP 4 a and its corresponding endoperoxide product were unambiguously confirmed by X-ray crystallography. The BDPs reported here can also be recognized as peri- and cata-benzannulated pentacenes with a non-functionalized central ring. Unlike the previous reported pentacene-based polycyclic aromatic hydrocarbons, the absorbances of the BDPs were blueshifted by ca. 40 nm relative to pentacene, even after extension of π-conjugation. The newly synthesized BDP products exhibit relatively good stability with half-lives as high as 4612 min in THF.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7b02b3293a47424daaa4c4755ec4e37b https://doi.org/10.1002/chem.201805248 Zobrazit plný text záznamu Plný text