Work

Addressing Synthetic Complexity in Conjugated Polymers: New Synthetic Methods for the Acceptor Units 2,1,3‐Benzothiadiazole, 2,3‐Dihexylquinoxaline, and 2 H ‐Benzotriazole

Year: 2025

Type: article

Abstract: In an attempt to address the growing problem of synthetic complexity in conjugated organic polymers, the synthesis of the common acceptor units 2,1,3‐benzothiadiazole (BTD), quinoxaline (Qx), and 2 H ‐benzotriazole (BTA) have been revisited, along with their dibromo derivatives necessary for use in catalytic cross‐coupling. In addition to reducing the total number of synthetic steps, efforts have been made to reduce hazardous reagents and simplify purification. Synthetic complexity index values for both established and newly reported methods are then generated in order to provide a qualitative evaluation of the reduced contribution of these common building blocks to the synthetic complexity of all materials that contain them.

Source: European Journal of Organic Chemistry

DOI: 10.1002/ejoc.202500379

Authors: Wyatt D. Wilcox, Hunter V. Hanson, Maxwell Bultman, Seth C. Rasmussen

Institution: North Dakota State University

Language: English

Topic: Organic Electronics and Photovoltaics

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: bronze

Funders: National Science Foundation, North Dakota State University, Division of Chemistry

Awards: G3007791085, REU Site: CAS: Green Chemistry at North Dakota State University, A New Design Paradigm in Low Band Gap Conjugated Polymers