Hollow organic capsules assemble into cellular semiconductors

Nature Communications
Boyuan ZhangColin Nuckolls

Abstract

Self-assembly of electroactive molecules is a promising route to new types of functional semiconductors. Here we report a capsule-shaped molecule that assembles itself into a cellular semiconducting material. The interior space of the capsule with a volume of ~415 Å3 is a nanoenvironment that can accommodate a guest. To self-assemble these capsules into electronic materials, we functionalize the thiophene rings with bromines, which encode self-assembly into two-dimensional layers held together through halogen bonding interactions. In the solid state and in films, these two-dimensional layers assemble into the three-dimensional crystalline structure. This hollow material is able to form the active layer in field effect transistor devices. We find that the current of these devices has strong response to the guest's interaction within the hollow spaces in the film. These devices are remarkable in their ability to distinguish, through their electrical response, between small differences in the guest.

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Citations

Feb 8, 2020·Chemistry : a European Journal·Colin NuckollsMichael L Steigerwald
Feb 29, 2020·Chemical Science·Melissa L BallMichael L Steigerwald
Jun 15, 2021·Chemical Science·Saber MirzaeiRaúl Hernández Sánchez
Mar 15, 2019·Accounts of Chemical Research·Melissa BallColin Nuckolls
Oct 26, 2018·Organic Letters·Xuejin YangQian Miao
Aug 1, 2018·Journal of the American Chemical Society·Melissa L BallColin Nuckolls
Nov 18, 2021·Chemical Reviews·Maxwell W Terban, Simon J L Billinge

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Methods Mentioned

BETA
circular dichroism
X-ray

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