首页|Quinolizinium-based tunable pH fluorescent probes for imaging

Quinolizinium-based tunable pH fluorescent probes for imaging

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A new class of quinolizinium-based tunable pH fluorescent probes for cell imaging was developed.The probes showed turn"On"fluorescence response upon acidification brought by a modulation of photoinduced electron transfer(PET)from the N,N-dialkyl aniline substituent to the quinolizinium core skeleton.These novel PET-based pH fluorescent probes displayed tunable emission properties in between 478 and 509 nm.Also,the probes exhibited tunable pH responsiveness with pKa ranging from<2.1 to 6.1 contributed by the steric effect of N,N-dialkyl anilines.They were successfully applied to in vivo pH sensing in lysosome in live cells.

pH probeQuinoliziniumPhoto-induced electron transferCellular imaging

Hoi-Yi Sit、Jie-Ren Deng、Wing-Cheung Chan

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The Hong Kong Polytechnic University Shenzhen Research Institute,Shenzhen,518057,China

State Key Laboratory of Chemical Biology and Drug Discovery,Department of Applied Biology and Chemical Technology,The Hong Kong Polytechnic University,Hung Horn,Hong Kong,China

2022

Dyes and Pigments

Dyes and Pigments

EISCI
ISSN:0143-7208
年,卷(期):2022.205
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