Quality Control of 1,4,7,10,13-Pentaoxa-16-azacyclooctadecane. So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic. Compound: 1,4,7,10,13-Pentaoxa-16-azacyclooctadecane, is researched, Molecular C12H25NO5, CAS is 33941-15-0, about Towards a background-free neutrinoless double beta decay experiment based on a fluorescent bicolor sensor.
Neutrinoless double beta decay (ββ0v) is a putative nuclear decay that can occur if, and only if, neutrinos are their own antiparticles. Due to the smallness of neutrino masses, the lifetime of ββ0v is expected to be larger than 1 × 1026 yr, and the tiny expected signals are deeply buried in backgrounds associated with the natural radioactive chains, whose characteristic lifetime is sixteen orders of magnitude faster. Since no known background processes converts xenon to barium, detection of the daughter ion in candidate decay events effectively eliminates backgrounds. It has been recently proposed that a xenon gas time projection chamber could unambiguously tag the ββ0v decay 136Xe → Ba2+ + 2e-(+2v) by detecting the resulting Ba2+ ion in a single-atom sensor made of a monolayer of mol. indicators. The Ba2+ would be captured by one of the mols. in the sensor, and the presence of the single chelated indicator would be subsequently revealed by a strong fluorescent response from repeated interrogation with a suitable laser system. Here we describe a fluorescent bicolor indicator that binds strongly to Ba2+ and shines very brightly, shifting its emission color from green to blue when chelated in dry medium, thus providing a discrimination factor with respect to the unchelated species in excess of 104.
As far as I know, this compound(33941-15-0)Quality Control of 1,4,7,10,13-Pentaoxa-16-azacyclooctadecane can be applied in many ways, which is helpful for the development of experiments. Therefore many people are doing relevant researches.
Reference:
Benzoxazole – Wikipedia,
Benzoxazole | C7H5NO – PubChem