Double post-synthetic modification is used for the π-extension of perylene based conjugated porous polymers (CPPs) using sequential annulative π-extension (APEX) reactions. This approach allowed us to synthesize new CPPs rendered...

A strategy to synthesize hyper-crosslinked polymers with strong visible-light absorption and abundant ionic sites is discussed. This is achieved in a one-pot reaction via the simultaneous Friedel–Crafts alkylation and quaternization reaction between α,α′-dibromo-p-xylene (DBX) and perylene diimide (PDI) substituted with N,N-dimethyl ethylene to result in hyper-crosslinked ionic polymers (HIPs). These HIPs display good surface areas with strong visible-light absorption (400–650 nm) and dispersibility in polar solvents like water and DMSO. Importantly, our experimental and theoretical studies indicate that PDI-HIPs possess a dynamic network with good uptake of water up to seven times their weight. Notably, PDI in PDI-HIPs is not only responsible for visible-light absorption but also acts as a probe to study their dynamic nature. Moreover, the presence of ultramicropores and CO2-philic functional groups in PDI-HIPs renders good CO2 uptake up to 2.11 mmol/g at 273 K despite their relatively low surface area.

Amphiphiles are widely explored for the solubilization of various hydrophobic molecules especially drugs in water. Recently, aromatic amphiphiles emerged as a new class of molecules for the solubilization of hydrophobic organic semiconductors in water. However, the synthesis of these systems involves several steps and often requires the use of expensive metal catalysts. Here we describe the design and synthesis of a new type of flexible aromatic amphiphilic trication (FAT) and its application for solubilization of hydrophobic organic semiconductors in water. FAT has been synthesized in two steps without the use of any expensive metal catalysts. We observed that FAT self-assembles in water into bilayer two dimensional (2D) nanosheets composed of hydrophobic naphthalimide units. FAT is found to be effective for the solubilization of various hydrophobic organic semiconductors such as perylene, perylene diimide (PDI) and C60 in water by encapsulating them into its hydrophobic domains. Moreover, FAT also explored for the solubilization of 2D conjugated ladder polymer, TQBQ in water.

Organic materials with tunable redox properties have become the versatile charge storage materials due to their abundant precursors and sustainability. Environmentally benign nature and recyclability make them attractive over other...