Safety of 2,4-Dimethyl-1H-pyrrole. The protonation of heteroatoms in aromatic heterocycles can be divided into two categories: lone pairs of electrons are in the aromatic ring conjugated system; and lone pairs of electrons do not participate. Compound: 2,4-Dimethyl-1H-pyrrole, is researched, Molecular C6H9N, CAS is 625-82-1, about p-Pyridine BODIPY-based fluorescence probe for highly sensitive and selective detection of picric acid. Author is Li, Hongda; Jia, Rulin; Wang, Yan.
A novel fluorescence probe p-PBP (I) for PA was synthesized based on a basic N atom as the electronic donor. The probe could detect PA over TNT, CE, PETN, RDX, HMX, NB, NT, DNT, NP, DNP, and common inorganic explosive ions (K+, Ba2+, NH+4, NO-3, ClO-3, and ClO-4), and common ions (Na+, Ca2+, and Mg2+) with high selectivity. The fluorescence quenching was attributed to the photo-induced electron transfer (PET) processes from the excited state of p-PBP to the ground state PA. The detection limit of probe p-PBP for PA was as low as 13.06 nmol/L, which is far lower than the concentration stipulated by the Environmental quality standards for surface water. The response time was less than 30 s. Hence, the fluorescence probe p-PBP was successfully developed to detect the concentration level of PA in real samples, which would provide a novel quant. anal. method of PA in forensic science.
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