Moreover, the reaction atmosphere is a critical factor for the resulting properties (Figure ), as laser-patterning involves pyrolysis and combustion processes and the surface polarity induced by oxygenation was found to improve the sorption of CO2. When changing from N2 or air to a pure O2 atmosphere, the resistive response was increased by more than one order of magnitude from ∆R/R0 = -0.22% to -3.2% for LPO2-Ade380, while the LP-NC morphology is only marginally influenced by the reaction atmosphere (SI, p. S3, Figure ).