Carbazoles are an important class of nitrogen-containing heterocycles with a planar tricyclic skeleton consisting of two benzene rings fused on both sides of the central pyrrole ring, with a large aromatic system and a central nitrogen atom, showing broad of electron delocalization. The structure of this compound is based on the indole structure, but in which a second benzene ring is fused to a five-membered ring at positions 2-3 of the indole. Carbazole structural motifs are widely found in, but not limited to, a large number of natural alkaloids of plant or bacterial origin. Since many of these alkaloids are medically useful, exhibit a fairly wide range of biological activities (anticancer, anti-HIV, antibacterial, anti-Alzheimer's disease, anticoagulant, analgesic, antiepileptic, antidiabetic, antioxidant, etc.). Medicinal chemistry also uses carbazole motifs in synthetic drugs to combat hypertension, heart disease, and hepatitis C virus replication.
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Solar Cell Materials refers to the materials used in the construction and functioning of solar cells. These materials play a crucial role in converting sunlight into electrical energy through the photovoltaic effect. Some common solar cell materials include: perovskite-based solar cells (PSCs) materials, dye-sensitized solar cells (DSSCs) materials, organic photovoltaic (OPV) materials. It's important to note that ongoing research and development in solar cell materials aim to improve efficiency, reduce costs, and explore new alternatives for sustainable energy generation.
Hydrogen storage materials are materials which can store and release hydrogen gas. These materials are important for the development of hydrogen fuel cell technology, as they allow for the safe and efficient storage of hydrogen. There are several types of hydrogen storage materials, including: 1. Sorbent Materials. Carbon-based materials such as nanotubes, fullerenes, graphene, mesoporous silica, metal-organic frameworks (MOFs), isoreticular metal-organic frameworks (IRMOFs), covalent-organic frameworks (COFs), and clathrates belong to this category. 2. Complex Hydrides. These consist of light metal hydrides and chemical hydrides. 3. Nanostructured materials. These are composed of functionalized sorbent materials as well as nanoparticles of complex hydrides. The development of efficient and cost-effective hydrogen storage materials is crucial for the widespread adoption of hydrogen fuel cell technology.