Spectroscopic investigations on butadiene derivatives.1H,13C and15N NMR studies on the π-electron distribution and intramolecular mobility of aminobuta-1,3-dienes
The 1H, 13C and 15N NMR spectra of a series of 5‐alkylthio‐3‐aryl‐2‐cyano‐5‐dialkylaminopenta‐2,4‐dienenitriles (4 and 5) with different amino and aryl substituents were recorded. The NMR chemical shifts are correlated with electronic effects of the substituents on the donor side of the butadiene system and also the para‐phenyl substituents X. Dynamic 1H and 13C NMR measurements showed rotational processes
Viscosity & SO2-sensitive dual colorimetric effect fluorescent sensor enabled imaging detection within plant onion and biological system
作者:Wei-Long Cui、Mao-Hua Wang、Yun-Hao Yang、Xingxiang Ji、Jian-Yong Wang
DOI:10.1016/j.saa.2023.122775
日期:2023.10
viscosity and SO2. The probe monitored viscosity and SO2 separately through dual emission channels with a difference of 135 nm. The probe responded sensitively to SO2 (<1s) and exhibited satisfactory immunity to interference and pH stability. The probe was successfully applied to imaging cellular, intra-zebrafish viscosity and SO2 changes. Interestingly, we took onion epidermal cells as model and explored the