Flexible disulfide-bridged hyperbranched poly(amido amine)s based nonconjugated carbonized polymer dots for iron (III) sensing and its application in meat by-product. - 2026
Flexible disulfide-bridged hyperbranched poly(amido amine)s based nonconjugated carbonized polymer dots for iron (III) sensing and its application in meat by-product.
Tian, Xiaoxian; Li, Liang; Yan, Chaorenet al.
2026 • In Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy, 358, p. 127837
[en] Herein, a novel flexible disulfide-bridged hyperbranched poly(amido amine)s based nonconjugated carbonized polymer dots (ssHPA-CPDs) was developed using citric acid and ssHPA with disulfide bonds as precursors. The structure and composition of ssHPA-CPDs were characterized by transmission electron microscopy, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, raman spectroscopy, and small-X-ray scattering. The results show that when the mass ratio of ssHPA-CPDs/citric acid is 0.5, graphite nitrogen and thiophenone/thiazole sulfur occupy a dominant position, with a higher quantum yield (29.08%). The high disulfide bond content increases ssHPA-CPDs flexibility, leading to greater surface roughness and enhanced Fe(III) binding. In addition, the fluorescence intensity of ssHPA-CPDs at 465 nm (λex = 350 nm) was used as the quantitative signal for Fe(III) detection with a limit of detection of 0.07 μM. The ssHPA-CPDs offering a rapid (1.0 min) and reproducible (three times) method by adding ascorbic acid for accurately determining Fe(III) content in liver and blood samples, with spiked recovery rates ranging from 87.47% to 106.01%. This method adopts flexible disulfide-bridged CPDs to regulate quantum yield, offering a rapid and accurate approach to detect Fe(III) content in meat by-products for the evaluation of food safety and human health.
Disciplines :
Materials science & engineering
Author, co-author :
Tian, Xiaoxian; Key Laboratory of Agro-products Quality and Safety Control in Storage and Transport Process, Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193, China
Li, Liang ✱; Université de Liège - ULiège > TERRA Research Centre
Yan, Chaoren; School of Medicine, Key Laboratory for Molecular Genetic Mechanisms and Intervention Research on High Altitude Disease of Tibet Autonomous Region, Engineering Research Center of Tibetan Medicine Detection Technology Ministry of Education, Joint Laboratory for Research on Active Components and Pharmacological Mechanism of Tibetan Materia Medica of Tibetan Medical Research Center of Tibet, Xizang Minzu University, Xianyang, Shaanxi 712082, China
Wang, Zhenyu; Key Laboratory of Agro-products Quality and Safety Control in Storage and Transport Process, Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193, China
Zheng, Xiaochun; Key Laboratory of Agro-products Quality and Safety Control in Storage and Transport Process, Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193, China
Liu, Bai-Tong; School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21, Nanyang Link, 637371, Singapore
Chen, Li; Key Laboratory of Agro-products Quality and Safety Control in Storage and Transport Process, Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193, China
Li, Shaobo; Key Laboratory of Agro-products Quality and Safety Control in Storage and Transport Process, Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193, China
Shang, Mengyu; Key Laboratory of Agro-products Quality and Safety Control in Storage and Transport Process, Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193, China
Li, Cheng; Key Laboratory of Agro-products Quality and Safety Control in Storage and Transport Process, Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193, China. Electronic address: licheng01@caas.cn
Zhang, Dequan; Key Laboratory of Agro-products Quality and Safety Control in Storage and Transport Process, Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193, China
✱ These authors have contributed equally to this work.
Language :
English
Title :
Flexible disulfide-bridged hyperbranched poly(amido amine)s based nonconjugated carbonized polymer dots for iron (III) sensing and its application in meat by-product.
Publication date :
05 October 2026
Journal title :
Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
This work was financially supported by the National Key Research and Development Program of China (2021YFD1600705), and Agricul
ture Research System of China of MOF and MARA CARS-38.
