Fig. 3: Structural characterization of 3D-Sp-COFs by different microscopic techniques. | Nature Communications

Fig. 3: Structural characterization of 3D-Sp-COFs by different microscopic techniques.

From: Self-templated synthesis of uniform hollow spheres based on highly conjugated three-dimensional covalent organic frameworks

Fig. 3

a FE-SEM images. b TEM images, 72 h (1)–(4) represents 3D-Sp-COF@72 h synthesized from different experimental batches. c SEM-energy-dispersive spectrum (EDS) elemental mapping images: solid sphere (left), full hollowing sphere (middle), and homogeneous core–shell sphere (right).

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