D-π-A Triarylboranes as Reversible Fluorescent Probes for CO2 and Temperature.
Hai-Jun LiSoren K MellerupXiang WangSuning WangPublished in: Organic letters (2019)
Alkylamino-functionalized donor-π-acceptor (D-π-A) triarylboranes have been found to be able to capture CO2, forming the carbamic acid derivative. Due to the close proximity of the amine substituent to the boron center, CO2 binding greatly influences the intramolecular charge transfer fluorescence, causing distinct and reversible emission spectral/color change, with a rapid response time, and a detection limit as low as 100 ppm in methanol. In addition, this system is also effective as fluorescence "turn-on" temperature probes due to the dynamic B ← N bond dissociation/association.
Keyphrases
- living cells
- energy transfer
- single molecule
- quantum dots
- loop mediated isothermal amplification
- sensitive detection
- fluorescent probe
- small molecule
- fluorescence imaging
- optical coherence tomography
- label free
- electron transfer
- molecularly imprinted
- mass spectrometry
- carbon dioxide
- computed tomography
- photodynamic therapy
- magnetic resonance
- binding protein
- transcription factor