Degradation of Structurally Defined Graphene Nanoribbons by Myeloperoxidase and the Photo‐Fenton Reaction. (18th August 2020)

• Record Type: Journal Article
• Authors: Luan, Xiangfeng; Martín, Cristina; Zhang, Pengfei; Li, Qian; Vacchi, Isabella Anna; Delogu, Lucia Gemma; Mai, Yiyong; Bianco, Alberto
• Is Part Of: Angewandte Chemie. Volume 132:Number 42(2020)
• Page Start: 18673
• Page End: 18679
• Publication Date: 2020-08-18
• Subjects: biodegradability -- carbon materials -- hydroxyl radicals -- peroxidases -- photo-Fenton reaction; Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.202008925
• Languages: English
• ISSNs: 0044-8249

Abstract

Abstract: As an emerging member of the graphene family, structurally defined graphene nanoribbons (GNRs) have shown promising applications in various fields. The evaluation of the degradability of GNRs is particularly important for assessing the persistence level and risk of these materials in living organisms and the environment. However, there is a void in the study of the degradation of GNRs. Here, we report the degradation behavior of GNRs in the presence of human myeloperoxidase (hMPO) or treated with the photo‐Fenton (PF) reaction. With the assistance of potassium hydroxide or imidazole, which facilitates the dispersion of GNRs in the aqueous solution, GNRs underwent only partial degradation after 25‐hour incubation with hMPO, while, the PF reaction degraded GNRs almost completely after 120 hours. These results indicate that structurally precise GNRs can be efficiently degraded under suitable conditions, providing more opportunities for future applications in different fields. Abstract : The effective degradation of structurally defined graphene nanoribbons (GNRs) was achieved by the enzymatic action of human myeloperoxidase and the photo‐Fenton reaction. These findings ensure the potential applications of GNRs in a wide range of fields.