The extent of electronic coupling between a boron dipyrromethene (BODIPY) fluorophore and a diarylethene (DAE) photoswitch has been modulated in a covalently linked moleculardyad by irradiation with either UV or visible light. In the open isomer, both moieties can be regarded as individual chromophores, while in the closed form the lowest electronic (S0→S1) transition of the dyad is slightly shifted
asymmetrical benzo-fused BODIPYdyes were synthesized from the Sonogashira coupling and nucleophilic substitution reactions on the 3-halogenated benzo-fused BODIPY, generated from readily available 3-halogeno-1-formylisoindoles in a two-step synthetic procedure. This novel BODIPY platform provides an easy path for the linking of BODIPY fluorophore to various desired functionalities as demonstrated in this
Three‐in‐one go: One‐pot synthesis of isoindole‐BODIPY dyes was developed based on nucleophilic substitution (SNAr) reactions of in situ formed chlorinated dipyrromethene by pyrrole. These dyes have long wavelengths, sharp absorption and fluorescence, high fluorescence quantum yields, and high photostability. The wavelength is finely tunable over a wide range (590–714 nm) by variation of substituent
Approaches to the stepwise synthesis of benzoporphyrins and phthalocyanines. Part 1. Synthesis of opp-dibenzoporphyrins (dibenzo[g,q]porphyrins)
作者:Raymond Bonnett、Kimberly A. McManus
DOI:10.1039/p19960002461
日期:——
A stepwise synthesis of the opp-dibenzoporphyrin (dibenzo[g,q]porphyrin) system involving isoindole precursors is described. 3-Halogeno-1-formylisoindoles are condensed with various α-unsubstituted pyrroles to give the corresponding benzopyrromethene hydrobromides. Thermal self-condensation of such compounds bearing an α-methyl group gives the corresponding opp-dibenzoporphyrin derivatives in low to
Opp-dibenzoporphyrins from benzopyrromethene derivatives
作者:Raymond Bonnett、Kimberly A. McManus
DOI:10.1039/c39940001129
日期:——
Condensation of 1-formyl-3-haloisoindoles with α-free pyrroles in the presence of hydrogen bromide gives the corresponding benzopyrromethene hydrobromides: heating α-halo-α′-methylbenzopyrromethene hydrobromides in o-dichlorobenzene in air provides an economical synthesis of the opp-dibenzoporphyrin system in acceptable yields.