New insights into the structure and chemistry of Titan's tholins via13C and 15N solid state nuclear magnetic resonance spectroscopy

► Tholins are complex organic compounds simulating Titan's atmospheric haze. ► 13C and 15N-enriched tholin was synthesized from isotopically enriched N2 and CH4. ► The tholin was analysed using 13C and 15N solid state nuclear magnetic resonance. ► The chemical and structural environment of the C and N atoms was specified.