Finally, identification of other peaks in the AzoGly-Au-2-CNFs sample (Table ) confirmed the material's structural integrity. The following bands support the presence of all crucial components: 𝐶 -𝐶 cellulose ring stretching at 1161 cm -1 , 𝐶 -𝑂 -𝐶 cellulose pyranose ring stretching centred at 1059 cm -1 , and 𝐶 -𝑂 -𝐶 cellulose β-glycosidic linkages at 905 cm -1 (all marked with pale yellow colour), as well as AzoGly bands occurring as a part of the broad 1653 cm -1 peak, namely -𝐶 = 𝑂 amide signal (marked with vivid green), 𝐶 = 𝐶 (in plane, bright yellow), and 𝑁 = 𝑁 (pale purple). These results are pivotal and emphasize the strength and importance of intermolecular electrostatic interactions in the design of advanced materials (Figure ).