Synthesis and properties of new dibenzoylmethanatoboron difluoride dyads connected by flexible siloxane linkers

Novel DBMBF2-BODIPY dyads connectedviaa flexible linker: synthesis and photophysical properties

“…The optical properties of the DBMBF 2 -BODIPY dyads 5a,b , as well as precursor 4 and model compounds 6a,b , were studied in detail in various solvents at room temperature and are presented in Table 1. The DBMBF 2 derivatives 6a,b , described by us earlier74 were used as monomeric model compounds for a detailed study on the optical properties of synthesized dyads (Fig. 1).…”

“…Functional precursors of DBMBF 2 1a,b were prepared according to the method described previously. 64,74 New dyads DBMBF 2 -BODIPY 5a,b were synthesized in two steps according to the route shown in Scheme 1 from allyl-DBMBF 2 1a,b and meso-decene-BODIPY 4 synthesized by us earlier. 76 Thus, at the first stage, the hydrosilylation reaction between allyl-DBMBF 2 1a,b and excess of 1,1,3,3,5,5-hexamethyltrisiloxane 2 in toluene using the Karstedt's platinum(0) catalyst 74,77 was utilized, and hydride siloxane derivatives of DBMBF 2 3a,b were obtained and used in the next step without purification.…”

“…64,74 New dyads DBMBF 2 -BODIPY 5a,b were synthesized in two steps according to the route shown in Scheme 1 from allyl-DBMBF 2 1a,b and meso-decene-BODIPY 4 synthesized by us earlier. 76 Thus, at the first stage, the hydrosilylation reaction between allyl-DBMBF 2 1a,b and excess of 1,1,3,3,5,5-hexamethyltrisiloxane 2 in toluene using the Karstedt's platinum(0) catalyst 74,77 was utilized, and hydride siloxane derivatives of DBMBF 2 3a,b were obtained and used in the next step without purification. It should be noted that in contrast to our previous study on the hydrosilylation of allyloxy-DBMBF 2 derivatives, this process is much cleaner and only one isomer is formed during the process.…”

“…The introduction of a flexible linker makes it possible not only to observe energy transfer, but also to study intramolecular fluorophore-fluorophore interaction, as was observed in our previous work. 74,75 Herein, we report on the design, synthesis and optical properties of novel DBMBF 2 -BODIPY dyads, demonstrating highly efficient energy transfer from the excited donor unit (DBMBF 2 ) to the acceptor unit (BODIPY). For the first time a flexible linker consisting of methylene and siloxane bonds was chosen to connect these chromophores.…”

Polydimethylsiloxanes with Grafted Dibenzoylmethanatoboron Difluoride: Synthesis and Properties

“…Continuing our study of the behavior of DBMBF 2 derivatives connected through flexible siloxane linker [ 62 , 63 ], in the present work the method for the preparation and properties of polydimethylsiloxanes with grafted dibenzoylmethanatoboron difluoride has been described for the first time. The structures of the prepared polymers were confirmed using NMR, IR spectroscopy and gel permeation chromatography (GPC) methods.…”