Pre-carbonization of molecular precursors is a requirement for laser-carbonization, as it condenses the precursors and supports the formation of a conductive LP-C film (Figure ). In a temperature range of 300-400 °C, adenine undergoes condensation, which is revealed by a color change and a reduction of the N-content (formation of carbon-network forming agent: CNFA) (SI, p. S2, Figure ). Among those CNFAs, adenine pyrolyzed at 380 °C (Ade380)