journal article·2024-10

Multifunctional Thermally Activated Delayed Fluorescence Carbon Dots for Temperature‐Responsive Sensor, Information Encryption, and Organelle Imaging

Hao Li, Chengming Sun, Mengling Zhang, Wei Yan, Zhenhui Kang

Advanced Functional Materials· Volume 34· Issue 40
Publisher page

Abstract

Abstract Thermally activated delay fluorescence (TADF) has great potential for information encryption, temperature detection, and bioimaging due to its long‐lived luminescence, temperature‐sensitive and high signal‐to‐noise ratio. However, it is still a challenge to establish TADF in aqueous environments. In this study, the composite with TADF (M‐FNCDs) is prepared using fluorine‐nitrogen co‐doped carbon dots (FNCDs) and melamine. It is worth mentioning that the M‐FNCDs show stable TADF under long‐wavelength excitation (470 nm) in aqueous environments. Moreover, the M‐FNCDs has distinctive temperature‐responsive properties and exhibit good linear relationships in the temperature range of 77–370 K. Simultaneously, M‐FNCDs suspension as the ink is utilized to realize information encryption/decryption due to their afterglow cannot be quenched in an aqueous solution. More importantly, M‐FNCDs with biocompatibility can target the mitochondria and lysosomes of living cells, and for the first time achieve the high signal‐to‐noise ratio and low background signal afterglow imaging of organelles. This work proposes a new strategy to prepare the stable TADF in aqueous solutions under long‐wavelength excitation and extend the TADF material potential applications in the future.
Source: crossref · Quality: baseline

Research context

OpenAlex topics: Carbon and Quantum Dots Applications · Luminescence and Fluorescent Materials · Nanocluster Synthesis and Applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Key Laboratory of Crop Cultivation and Physiology (Agricultural College of Yangzhou University) Research Institute of Smart Agriculture (Agricultural College of Yangzhou University) Jiangsu Co‐Innovation Center for Modern Production Technology of Grain Crops Yangzhou University Yangzhou 225009 China

Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province Shenzhen Key Laboratory of Photonics and Biophotonics College of Physics and Optoelectronic Engineering Shenzhen University Shenzhen 518060 China

Institute of Functional Nano and Soft Materials (FUNSOM) Jiangsu Key Laboratory for Carbon‐based Functional Materials and Devices Soochow University Suzhou 215123 China

Macao Institute of Materials Science and Engineering (MIMSE) MUST‐SUDA Joint Research Center for Advanced Functional Materials Macau University of Science and Technology Taipa Macau 999078 China

Funding

National Natural Science Foundation of China · Natural Science Foundation of Jiangsu Province · Basic and Applied Basic Research Foundation of Guangdong Province · Shenzhen Science and Technology Innovation Program

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