Covalent triazine frameworks (CTFs) have attracted a great deal of attention as an attractive new class of visible light-active, metal-free, and polymer-based heterogeneous photocatalysts. CTFs have demonstrated promising characteristics such as synthetic diversity, stability, nontoxicity, pure organic nature, and enhanced ordered structure. In this review, we aim to summarize the recent developments in CTFs ranging from novel preparation methods to critical factors that directly impact their photocatalytic efficiency. Various physical and chemical design strategies for morphology, band structure, charge separation, and transfer optimization described in the literature are discussed. Emphasis is placed on the enhancement and maximization of photocatalytic efficiencies of specific applications such as photoredox organosynthesis, water splitting, CO2 photoreduction, H2O2 generation, etc.

Digital polymers with precisely ordered units acting as the coded 0- or 1-bit, are introduced as a promising option for molecular data storage. However, the pursuit of better performance in terms of high storage capacity and useful functions never stops. Herein, we propose a concept of an information-coded 2D digital dendrimer. The divergent growth via thiol-maleimide Michael coupling allows precise arrangements of the 0- and 1-bits in the uniform dendrimers. A protocol for calculating the storage capacity of non-linear binary digital dendrimer is established based on data matrix barcode, generated by the tandem mass spectrometry decoding and encryption. Furthermore, the generated data matrix barcode can be read by a common hand-held device to cater the applications such as item identification, traceability and anticouterfeiting purpose. This work demonstrates the high data storage capacity of a uniform dendrimer and uncovers good opportunities for the digital polymers.

In the past decades, enormous efforts have been put into visible light–promoted photocatalytic chemical transformations. Among the intensely studied photocatalytic systems, metal‐free, pure organic and heterogeneous photocatalysts based on conjugated microporous polymers (CMPs), a class of organic porous materials featuring π‐conjugated backbone and permanent microporosity, draw much attention. The CMP‐based photocatalysts are highly attractive because of their pure organic nature, ease of synthesis, structural diversity, and nontoxicity, as well as low costs. Over the past years, various CMPs have been synthesized for a broad range of photocatalytic applications. Herein, the aim is to deliver an updated summary of this field with the focus on crucial factors, which largely affect the catalytic performance of CMPs. To name a few, band structure, charge separation and transfer, and morphology are described combined with specific energy‐ and organosynthesis‐related applications such as water splitting, CO2 reduction, organic photoredox reactions, etc.

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The fast recombination of photogenerated electron-hole pairs after charge separation is one of the main limiting factors for achieving high efficiency of organic semiconductor photocatalysts. Herein, we report a conjugated...