A solid-state effect responsible for an organic quintet state at room temperature and ambient pressure.

Zheng, Yonghao; Miao, Mao-sheng; Dantelle, Géraldine; Eisenmenger, Nancy D; Wu, Guang; Yavuz, Ilhan; Chabinyc, Michael L; Houk, Ken N et al. · Adv Mater · 2015

basic_science · Level V

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Abstract

A stable organic diradicaloid with an intermolecular quintet at room temperature as a polycrystalline solid is studied. The conclusion is supported by the observation of the ΔMs = ±2 forbidden transition, electron spin resonance (ESR) simulations, and density functional theory (DFT) calculations. In addition, the molecule, as the active component of a device, is an outstanding near-infrared photodetector with detectivity over 10(11) cm Hz(1/2) W(-1) at 1200 nm.