Hollow Organic Capsules Assemble into Cellular Semiconductors

Overview

Journal Nat Commun

Specialty Biology

Date 2018 May 18

PMID 29769520

Citations 12

Authors

Boyuan Zhang

Raul Hernandez Sanchez

Yu Zhong

Melissa Ball

Maxwell W Terban

Daniel Paley

Simon J L Billinge

Fay Ng

Michael L Steigerwald

Colin Nuckolls

Affiliations

Soon will be listed here.

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 Å 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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