Cross-Linked Polyamide Chains Enhanced the Fluorescence of Polymer Carbon Dots

Autor:	Sijia Lu, Yanmin Zhang, Chuan-Fan Ding, Lin Yang, Yuyan Xue, Shaoning Yu, Huayan Yang, Shouning Yang
Jazyk:	angličtina
Rok vydání:	2020
Předmět:	chemistry.chemical_classification General Chemical Engineering Chemical structure chemistry.chemical_element General Chemistry Polymer Photochemistry Photobleaching Fluorescence Article Chemistry chemistry Polyamide Particle size Luminescence Carbon QD1-999
Zdroj:	ACS Omega, Vol 5, Iss 14, Pp 8219-8229 (2020) ACS Omega
ISSN:	2470-1343
Popis:	Carbon dots (CDs) have attracted tremendous attention for their outstanding advantages in luminescence. Here, α-amino-substituted lysine derivatives with the determined chemical structure were employed as precursors to obtain bright and highly stable fluorescent CDs through a facile hydrothermal route. The relationships among the chemical structure of precursors, CD fluorescence, and particle size were investigated. The results indicated that increased numbers of functional groups in precursors could promote the degree of cross-linking and lead to a smaller size, better fluorescent properties, and stronger stability of CDs. The C-CDs that were prepared from lysine derivatives with most functional groups showed excitation-dependent dual excitation and dual emission (DE2), high-stability luminescence, strong resistance to photobleaching, and high selectivity to Fe3+ and could be used as a sensitive probe for Fe3+ detection.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e93fdc7efbcd8cd3e31ea2c080d41a14 https://doaj.org/article/7f6f79bdefcc4d3ca82fb229461f1438 Zobrazit plný text záznamu