Wang, WeiTong, ShuoWang, Qi-QiangAo, Yu-FeiWang, De-XianZhu, Jieping2022-10-102022-10-102022-10-102022-09-1910.1002/chem.202202507https://infoscience.epfl.ch/handle/20.500.14299/191377WOS:000859163100001The small Stokes shift and weak emission in the solid state are two main shortcomings associated with the boron-dipyrromethene (BODIPY) family of dyes. This study presents the design, synthesis and luminescent properties of boron difluoro complexes of 2-aryl-5-alkylamino-4-alkylaminocarbonylthiazoles. These dyes display Stokes shifts (Delta lambda, 77-101 nm) with quantum yields (phi(FL)) up to 64.9 and 34.7 % in toluene solution and in solid state, respectively. Some of these compounds exhibit dual fluorescence and room-temperature phosphorescence (RTP) emission properties with modulable phosphorescence quantum yields (phi(PL)) and lifetime (tau(p) up to 251 mu s). The presence of intramolecular H-bonds and negligible pi-pi stacking revealed by X-ray crystal structure might account for the observed large Stokes shift and significant solid-state emission of these fluorophores, while the enhanced spin-orbit coupling (SOC) of iodine and the self-assembly driven by halogen bonding, pi-pi and C-H center dot center dot center dot pi interactions could be responsible for the observed RTP of iodine containing phosphors.Chemistry, MultidisciplinaryChemistryboron complexdyeshalogen bondingroom-temperature phosphorescencesolid state emissionaggregation-induced emissionfacile synthesisexcited-statedual-emissionaza-bodipycomplexesdesignligandsfluorophoresluminophorestext::journal::journal article::research article