Controlling molecular helicity: A new approach to constructing chiral nanographenes
Nanographenes with up to eight helicene units can now be selectively synthesized using a two-step process. Researchers from Science Tokyo have developed a strategy to synthesize multi-helical nanographenes containing up to eight helicene units with controlled handedness.
Researchers at Science Tokyo have developed a novel method to synthesize complex chiral nanographenes containing up to eight helicene units with controlled handedness. By employing a two-step process involving [2+2+2] cycloaddition and the Scholl reaction, the team achieved selective construction of these intricate molecular structures.
This advancement offers potential applications in advanced chiroptical materials and optoelectronic devices, as well as the ability to tune the fluorescence of these compounds across the visible spectrum to near-infrared region. The research team, led by Ryota Shimizu, Juntaro Nogami, Futo Morita, Chihiro Maeda, and Ken Tanaka, overcame the challenge of obtaining stereoisomers with uniformly aligned helicities by incorporating helicene units along the edges of nanographenes.
Their approach provides a robust platform for designing chiral optoelectronic materials with tunable optical properties, paving the way for future technologies in polarization-sensitive devices and near-infrared-emitting systems.
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