Covalent Organic Frameworks (COFs) are a class of organic polymers obtained by means of reticular chemistry. They consist of 2D or 3D polymers composed of covalently bound organic building blocks that are arranged into periodic structures in a geometric manner, thus forming well-defined tessellated motifs. By means of facile incorporation of a vast range of functional subunits and the modular control of geometry and topology via molecular linker design, a large variety of 2D or 3D frameworks is available, thus allowing the tailor-made design of COFs with tunable properties and enhanced performance in targeted applications. The incorporation of chromophores gives access to a vast selection of COFs with intriguing physicochemical properties that directly arises from the incorporated dyes. Additional features such as stacking, degree of conjugation or interaction between different monomers triggered by the organic skeleton also directly impact the optoelectronic properties. Borondipyrromethene (BODIPY) derivatives are well-known dye molecules that have been extensively studied and implemented in light-absorbing systems. BODIPYs are robust enough to undergo a broad range of chemical transformations and specific core modifications allow the modulation of the photophysical properties in a precise manner. For instance, alkyl-substitution in α or β position typically lead to narrow absorption and emission bands in the range of 500 to 550 nm, which are typically accompanied by high extinction coefficients and quantum yields up to 81%. The high modularity of BODIPYs is showcased by expansion of the optical features from the visible to the NIR region or the enhancement of intersystem crossing to develop efficient triplet state photosensitizers. Applications of BODIPYs encompass numerous examples in various fields including bioimaging, sensing and detection, optoelectronics, photocatalysis and photodynamic therapy. The robustness and synthetic versatility of these dyes, in combination with their unique photophysical properties, motivated the development of more complex BODIPY-containing structures. Among the reported architectures are a variety of self-assembled structures, macrocycles, cages and polymers, including linear polymers, porous branched polymers and MOFs. More recently, initial examples for the incorporation of such dyes into COFs have been achieved via functionalization of defects and later by direct condensation of suitable BODIPY-based building blocks. Applications of BODIPY-COFs were found in photodynamic therapy, photocatalysis or colorimetric sensing, among others. However, the steric demand at the sp 3 boron atom in the BODIPY core typically hampers the formation of crystalline COF layers, thus affecting the porosity and physicochemical properties. Hence, we purposely designed BDP-TFP-COF by incorporating small methyl groups as meso substituents in the diamino-BODIPY precursor BDP(NH2)2 (Figure ) to facilitate the growth of crystalline structures. In addition, the incorporation of 2,4,6-triformylphloroglucinol (TFP) as cross-linking nodes increases the robustness of the covalent backbone due to the implementation of β-ketoenamine linkages. This enhancement of the stability is beneficial for the use of the COF as a material without losing its structural integrity and properties over time. Just recently, de la Peña O'shea and coworkers combined a shorter amine-containing BODIPY derivative with TFP to obtain a COF with a staggered ABC stacking motif and a BET surface area (SABET) of 362 m 2 g -1 .