Electrochemical Activation of Diverse Conventional Photoredox Catalysts Induces Potent Photoreductant Activity**
作者:Colleen P. Chernowsky、Alyah F. Chmiel、Zachary K. Wickens
DOI:10.1002/anie.202107169
日期:2021.9.20
Herein, we disclose that electrochemical stimulation induces new photocatalytic activity from a range of structurally diverse conventional photocatalysts. These studies uncover a new electron-primed photoredox catalyst capable of promoting the reductive cleavage of strong C(sp2)−N and C(sp2)−O bonds. We illustrate several examples of the synthetic utility of these deeply reducing but otherwise safe
The symmetrical functionalization at the bay‐positions of terrylenediimides yields near‐infrared absorbing core‐twisted terrylenediimide dyes, which exhibit interesting intermolecularinteractions such as short Br···Br and C‐H···O units.
Synthesis and Modification of Terrylenediimides as High-Performance Fluorescent Dyes
作者:Fabian Nolde、Jianqiang Qu、Christopher Kohl、Neil G. Pschirer、Erik Reuther、Klaus Müllen
DOI:10.1002/chem.200401177
日期:2005.6.20
synthetic approaches to terrylenediimides, highly photostable fluorescentdyes, are described. For the first time terrylenediimide has been synthesised in a straightforward procedure that makes large quantities available. The second route includes an efficient cross-coupling reaction followed by a cyclodehydrogenation. Monofunctionalisation of the imide structure allows terrylenediimides now to be coupled
[DE] VERFAHREN ZUR HERSTELLUNG VON TERRYLEN-3,4:11,12-TETRACARBONSÄUREDIIMIDEN DURCH DIREKTSYNTHESE<br/>[EN] METHOD FOR THE PRODUCTION OF TERYLENE-3,4:11,12-TETRACARBOXYDIIMIDES BY DIRECT SYNTHESIS<br/>[FR] PROCEDE DE PRODUCTION DE DIIMIDES DE TERYLENE-3,4:11,12-ACIDE TETRACARBOXYLIQUE PAR SYNTHESE DIRECTE
申请人:BASF AG
公开号:WO2005070895A1
公开(公告)日:2005-08-04
Verfahren zur Herstellung von Terrylen-3,4:11,12-tetracarbonsäurediimiden (I) mit folgender Bedeutung der Variablen: R, R' unabhängig voneinander Wasserstoff; gewünschtenfalls substituiertes Alkyl oder Cycloalkyl, Aryl oder Hetaryl; R¹ Wasserstoff oder Alkyl; R² Wasserstoff; Alkyl; gewünschtenfalls substituiertes Aryl oder Hetaryl, indem man ein Perylen-3,4-dicarbonsäureimid (II) in Gegenwart eines basenstabilen, hochsiedenden, organischen Lösungsmittels und einer alkali- oder erdalkalimetallhaltigen Base mit einem Naphthalin-1,8-dicarbonsäureimid (III) in der X Wasserstoff, Brom oder Chlor bedeutet, umsetzt.
Flying colours: Molecules with intenseNIR emission are challenging to achieve. A strategy towards the development of new strongly NIR-emissive rylene diimides (RDIs) in quantum yields up to 90 %, having extended conjugation with restricted dynamics is reported. One of the molecules reported here, with conjugated carbazole wings, resembles a Janusbutterfly.