Fullerenes and fullerene-related molecules have been proposed as explanations for unidentified astronomical features such as the intense UV absorption band at 217 nm and the enigmatic diffuse interstellar bands (DIBs), In order to shed light on the a long-standing DIB’s problem, we search high-resolution and high-quality VLT/UVES optical spectra of the hot R Coronae Borealis (RCB) star DY Cen for electronic transitions of the neutral C 60 fullerene molecule and DIBs. We report the non-detection of the strongest C 60 electronic transitions (e.g., those at ∼376, 398, and 402 nm). DIBs towards
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