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An infrared (940nm) laser desorption coupled with corona beam ionization (LD-CBI) technique was developed for expanding the application of the ambient mass spectrometry (AMS). A black ceramic sample plate was employed to facilitate the non-resonance absorption of laser energy. Solution and powder samples were immobilized in the shallow depression on ceramic plate and desorbed precisely since there...
A new type of flavone-based fluorescent probe (DMAF) capable of cysteine (Cys)/homocysteine (Hcy) sensing with high selectivity over other amino acids was developed. Such type of probe undergoes Cys/Hcy-mediated cyclization reaction with the involvement of its aldehyde group, which suppresses of the photoinduced electron transfer (PET) process of the probe molecule and consequently leads to the enhancement...
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