1306754-00-6Relevant academic research and scientific papers
NIR-Absorbing Dye Based on BF2-Bridged Azafulvene Dimer as a Strong Electron-Accepting Unit
Shimogawa, Hiroyuki,Murata, Yasujiro,Wakamiya, Atsushi
, p. 5135 - 5138 (2018)
BF2-bridged azafulvene dimers designed to be strong electron-accepting units were selectively synthesized using a bulky base. Single-crystal X-ray diffraction analysis revealed that the high electron-accepting ability of this structure stems from the contribution of the ?-conjugation mode of the azafulvene dimer upon formation of B-N coordination bonds. As a result of the low-lying LUMO energy of this electron-accepting unit, the corresponding D-A-D dye exhibits an intense NIR absorption band at 922 nm, which tails up to 1150 nm, while significant absorption bands in the visible region are absent. As a NIR dye this molecule exhibits moreover exceptional photostability and resistance to oxidation by atmospheric oxygen, even in dilute solution.
Push-pull type meso -ester substituted BODIPY near-infrared dyes as contrast agents for photoacoustic imaging
Ni, Yong,Kannadorai, Ravi Kumar,Yu, Sidney W.-K.,Chang, Young-Tae,Wu, Jishan
supporting information, p. 4531 - 4535 (2017/07/10)
A series of push-pull type meso-ester substituted BODIPY dyes 1-4 with intense near-infrared absorption, largely enhanced photoacoustic (PA) activity and excellent photo-stability were synthesized. The impact of the electronic structure on the PA activity was also discussed. Moreover, the in vitro and in vivo PA imaging were investigated, which suggested a passive targeting capacity in the tumor site.
