Pr(H 3 BNMe 2 BH 3 ) 3 and Pr(thd) 3 as Volatile Carriers for Actinium-225. Deposition of Actinium-Doped Praseodymium Boride Thin Films for Potential Use in Brachytherapy.

Authors :: Daly SR
Bellott BJ
McAlister DR
Horwitz EP
Girolami GS
Source :: Inorganic chemistry [Inorg Chem] 2022 May 16; Vol. 61 (19), pp. 7217-7221. Date of Electronic Publication: 2022 May 05.
Publication Year :: 2022
Abstract: Here we show that the praseodymium N , N -dimethylaminodiboranate complex Pr(H <subscript>3</subscript> BNMe <subscript>2</subscript> BH <subscript>3</subscript> ) <subscript>3</subscript> and the 2,2,6,6-tetramethylheptane-3,5-dionate complex Pr(thd) <subscript>3</subscript> can serve as volatile carriers for <superscript>225</superscript> Ac. The actinium coordination complexes Ac(H <subscript>3</subscript> BNMe <subscript>2</subscript> BH <subscript>3</subscript> ) <subscript>3</subscript> and Ac(thd) <subscript>3</subscript> are the likely species subliming with the carrier material. A sample of <superscript>225</superscript> Ac-doped Pr(H <subscript>3</subscript> BNMe <subscript>2</subscript> BH <subscript>3</subscript> ) <subscript>3</subscript> was used to deposit amorphous <superscript>225</superscript> Ac-doped praseodymium boride films on glass and Si(100) at 300 °C. The α emission spectra of the refractory films are well-resolved, suggesting that they could be used as radioactive implants for brachytherapy and related treatments.

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