Mono- and bis-dialkylaminophenylbuta-l,3-dienyl boron-dipyrromethenes （BODIPYs） 1-12 were synthesized in 36%-42% yields by a Knoevenagel-type condensation. The absorption and emission maxima （λabs = 614-739 rim; ,...Mono- and bis-dialkylaminophenylbuta-l,3-dienyl boron-dipyrromethenes （BODIPYs） 1-12 were synthesized in 36%-42% yields by a Knoevenagel-type condensation. The absorption and emission maxima （λabs = 614-739 rim; ,λem = 655-776 nm in CHCI3） of 1-12 covered from the visible to the near- infrared region. Probe I was ratiometric Vis pH probes. Such probe was almost non-fluorescent. Upon the protonation of the tertiary amine function of 1, the strong fluorescence （φf =0.97） was released and the florescence intensity was dramatically increased by one thousand folds. The sharp isosbestic points were discovered at 590 nm, which was a ratiometric pH probe.展开更多
基金supported by NNSFC (No. 21372063)Program for Changjiang Scholars and Innovative Research Team in University (No. PCS IRT1126)+1 种基金the Foundation of the Education Department of Henan Province for Science and Technology Research Projects (No. 13A150046)the Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry
文摘Mono- and bis-dialkylaminophenylbuta-l,3-dienyl boron-dipyrromethenes （BODIPYs） 1-12 were synthesized in 36%-42% yields by a Knoevenagel-type condensation. The absorption and emission maxima （λabs = 614-739 rim; ,λem = 655-776 nm in CHCI3） of 1-12 covered from the visible to the near- infrared region. Probe I was ratiometric Vis pH probes. Such probe was almost non-fluorescent. Upon the protonation of the tertiary amine function of 1, the strong fluorescence （φf =0.97） was released and the florescence intensity was dramatically increased by one thousand folds. The sharp isosbestic points were discovered at 590 nm, which was a ratiometric pH probe.
