Releasing the p-conjugated stack in triazine-derived porous materials for highly accessible active sites

Covalent triazine-derived porous materials, a class of nitrogen-rich porous materials, show great potential for a broad scope of applications. How to reduce or reaggregate the pi-conjugated stack among the adjacent layers of covalent triazine-derived porous materials for more accessible active sites, is always the high-profile key point. Herein, we report a facile and mild cross-linking strategy between cyanuric chloride (CC) and octaphenyl polyhedral oligomeric silsesquioxane (POSS-P) to synthesize triazine-derived porous materials. Due to the steric hindrance of POSS-P, the pi-stacking of CC has been released intelligently, making the constructed porous materials with good affinity and highly accessible active sites. Benefiting from these notable merits, prominently pseudocapacitive lithium storage invoking by prolonged cycling has been achieved by using triazine-derived porous materials as the organic electrode of lithium-ion batteries, with the discharge capacity of 817 mAh g(-1) at the current density of 2 A g(-1) after 2000 cycles. Also, these accessible active sites on triazine-derived porous materials have also been proved to be favor for high adsorption capability and fast mass transfer. This work opens a new avenue for ingenious design and simple synthesis of porous materials with more accessible active sites, further promoting their performance in energy and adsorption fields.