Radiation stability of phosphine oxide functionalized pillar[5]arenes

Author:

Geng Junshan1,Wang Ying1,Cai Yimin1,Yang Bin1,Yuan Lihua1,Feng Wen1

Affiliation:

1. Key Laboratory for Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, College of Chemistry, Sichuan University , Chengdu 610064 , China

Abstract

Abstract The radiation stability of three phosphine oxide functionalized pillar[5]arenes (POP5A) was studied by an electron accelerator with dose up to 5 MGy in air at room temperature. The structures of both irradiated and unirradiated pillar[5]arenes samples were comparatively characterized by Micro-FTIR, NMR, UV-vis, ESI-HRMS and HPLC techniques. The results revealed different degrees of radiation damage at different doses for POP5A, and the degradation products are mainly composed of organic species containing hydroxyl groups and carbonyl groups. The possible radiolytic degradation pathway was proposed. In addition, extraction of uranyl ion with irradiated POP5A samples was examined. The distribution ratio of uranyl ion was found to increase at low radiation dose and decrease until 3000 kGy. This is the first time that the irradiation stability of pillar[5]arenes derivative extractants has been studied in detail and it provides reliable data support for further application of pillar[5]arenes extractants in practical applications.

Funder

National Natural Science Foundation of China

Open Project of Key Laboratory for Radiation Physics and Technology of Ministry of Education

Publisher

Walter de Gruyter GmbH

Subject

Physical and Theoretical Chemistry

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