Abstract
AbstractTemplated pentaborates have potential application as LEDs. The organically templated pentaborate [C2H8N][B5O6(OH)4] (A) was synthesized by the reaction of dimethylamine with boric acid in pyridine solution and the compound was characterized by elemental analysis, FT‐IR and photoluminescence spectroscopy as well as TG‐DTA analysis and powder X‐ray diffraction. The crystallographic structure of A was determined by single‐crystal X‐ray diffraction. It crystallizes in the monoclinic system, space group P$\bar{1}$ with the parameters of a = 8.893(7) (Å), b = 8.902(7) (Å), c = 16.967(16) (Å), α = 102.620(12)°,β = 102.817(11)°, γ = 99.107(5)°, V = 1247.5(18) Å3 and Z = 4. The luminescent properties of the compound were studied, and a purple‐pink luminescence occurs with an emission maximum at 473 nm. The photoluminescence of A can be changed from purple‐pink to white by means of a simple heat‐treatment process. The white‐light‐emission of the as‐synthesized sample G makes the pentaborate a good candidate for display and lighting applications in white LEDs.
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