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But a wagon-wheel molecule – what the researchers call a “π-conjugated spoked-wheel macrocycle” – has an advantage over the spaghetti-design: it is symmetrical. This round shape emits light in not just one direction, but in any direction at random – that is, light is not restricted to a single polarization. The scenario can be imagined as attempting to balance a pencil straight up on its tip: let go, and the pencil will fall over in a random direction each time, the authors said.
