A ratiometric radio-photoluminescence dosimeter based on a radical excimer for X-ray detection

Abstract

Deliberately blending of tpc− and pba− ligands with the hexanuclear Th4+ cores has given rise to a new radio-photoluminescence nanocluster, which exhibits a fluorochromic response toward ionizing radiation via the formation of a radical-excimer.

Poly(N-isopropylacrylamide) Microgel-Based Sensor for Clinical-Level X-ray Dose Measurements

“…However, dual-wavelength excitation made it difficult to use our systems, and the preparation of polyacrylamide nanogels produced a large amount of organic waste. Ratiometric fluorescent dosimeters, such as quinoline derivative-polymer matrix, organic–inorganic cluster, and BODIPY derivatives, have been widely studied. − However, hydrogel-based ratiometric fluorescent dosimeters are not prevalent.…”

Thorium Cluster Synthesized by a Solvent-Free Flux Approach: The Richest Coordination Diversity and Application Exploration

“…The solvation environment plays a vital role in regulating the stability constant and coordination environment of solutes. − Solvent-free synthesis, such as ionothermal synthesis, , melting of azoles, and the use of deep eutectic solvents, , has been widely applied in coordination chemistry in view of its unique solvation environment. − Solvent-free synthesis represents a greener synthetic approach to eliminating radio-contaminated solvents when handling actinide compounds , and provides a unique solvation environment that may lead to reaction mechanisms different from those of traditional solvothermal methods, , offering a new opportunity to enrich the coordination diversity in Th clusters. Organic azoles, particularly triazoles with low melting point, attract our attention due to its widespread use in coordination chemistry .…”

“…Traditional solvothermal synthesis usually features low viscosity, weak solvation interaction, and low precursor concentration, which leads to a fast reaction equilibrium between Th 4+ (or Th cluster) and capping agents. Consequently, the coordination pattern of each Th 4+ in a Th cluster was homogeneous and uniform (Figure a), resulting in less variety in coordination diversity in Th clusters. − Some strategies have been employed to enrich the coordination diversity: (1) incorporating a second metal with a distinct coordination preference to create a heterometallic cluster or (2) using a mixed ligand (heteroleptic) or a heterotopic ligand to deliberately create different coordination environments. Despite these efforts, the most diverse coordination chemistry in Th clusters is, however, only three coordination modes, to our best knowledge.…”