Persistent luminescence (PersL) in Eu ³⁺ -doped ZrO ₂ was investigated as a potential alternative approach for radiation dosimetry under beta-particle irradiation. ZrO ₂ :Eu ³⁺ powders with different dopant concentrations were synthesized by solid-state reaction and structurally characterized by powder X-ray diffraction, confirming the formation of monoclinic ZrO ₂ and effective Eu ³⁺ incorporation. TL and PersL measurements reveal the presence of shallow trapping centers, mainly associated with a low-temperature TL glow peak at 61 °C, which are responsible for the PersL emission. The sample doped with 5 mol% Eu ³⁺ exhibits enhanced PersL intensity, a nearly linear dose–response in the range of 0.078 to 23.4 Gy, and improved repeatability over multiple irradiation–readout cycles. These results demonstrate that ZrO ₂ :Eu ³⁺ is a promising candidate for persistent luminescence-based radiation dosimetry.

A new tetracyclic morpholine-fused[5,1-c]-triazole, (4aS,5S,6aR,10aR,10bR)-5-methoxy-9,9-dimethyl-4a,5,6a,7,10a,10b-hexahydro-12H-[1,3]dioxino[4′,5′:5,6]pyrano[4,3-b][1,2,3]triazolo[1,5-d][1,4]oxazine, was synthesized via a five-step sequence starting from methyl α-_D-glucopyranoside by using, as a key step, an intramolecular copper(I) catalyzed alkyne-azide cycloaddition (CuAAC). The synthesized compound was fully characterized by ¹H and ¹³C NMR, FT-IR, and HRMS.

A new tetracyclic morpholine-fused [5,1-c]-triazole, (4aS,5S,6aR,10aR,10bR)-5-methoxy-9,9-dimethyl-4a,5,6a,7,10a,10b-hexahydro-12H-[1,3]dioxino[4',5':5,6]pyrano[4,3-b][1,2,3]triazolo[1,5-d][1,4]oxazine, was synthesized via a five-step sequence starting from methyl α-D-glucopyranoside by using as a key step an intramolecular copper(I) cat-alyzed alkyne-azide cycloaddition (CuAAC). The synthesized compound was fully characterized by 1H and 13C NMR, FT-IR, and HRMS.