Abstract
At 77 K in the solid state and in ethanol glasses, o-carborane (1,2-C 2B 10H 12) shows a relatively intense ( ϕ ∼ 10 −3 at λ exc = 260 nm) structured photoluminescence ( λ max = 441 nm).In agreement with the rather slow decay of this emission ( τ ∼ 4 s) it is suggested to be a phosphorescence. While it appears to be a genuine property of o-carborane an unknown impurity as origin of this luminescence is not completely excluded.
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