# Strong Acceptors Based on Derivatives of Benzothiadiazoloimidazole

## TL;DR

This paper introduces a new strong acceptor material that could improve air-stable n-type organic semiconductors.

## Contribution

The novel benzothiadiazoloimidazole-based acceptor BTI-NDI-BTI-a shows high electron affinity and air stability.

## Key findings

- BTI-NDI-BTI-a has a high electron affinity of 3.94 eV and good solubility.
- The material forms 1D slipped-stacking crystals, which is promising for semiconductor applications.
- It shows potential for air-stable n-type organic semiconductors.

## Abstract

Despite the rapid progression of organic semiconductors, developing high-air-stability n-type organic semiconductors are still challenging. Herein, novel strong acceptors based on benzothiadiazoloimidazole units are reported. The results reveal that the strong acceptor BTI-NDI-BTI-a has good solubility and high electron affinity (3.94 eV), accompanied by 1D slipped-stacking crystals. Notably, the material presents promising potential for developing into air-stable n-type organic semiconductor materials.