Journal
ANALYTICAL METHODS
Volume 11, Issue 31, Pages 3974-3980Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9ay01115c
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Funding
- Emphases science and technology research program of Jilin Province Science and Technology Development Plan [20180201060SF]
- Jilin Province Bureau of Quality and Technical Supervision project [DBXM146-2016, DBXM109-2017, DBXM114-2017]
- Jilin Provincial Health Special project [sczsy201605]
- Excellent Talents Training Program of China-Japan Union Hospital of Jilin University [YXQ1-201906]
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It is of great significance to construct fluorescence-based nanothermometers via a convenient method. Herein, based on the opposite surface charges of carbon dots (CDs) and gold nanoclusters (Au NCs), a simple and facile self-assemble strategy was developed to obtain the CD/Au NC fluorescent hybrid nanomaterials via electrostatic interactions. At the excitation of 380 nm, the hybrid nanomaterials displayed a typical dual-emission behavior (455 nm and 600 nm). Because of the different thermal sensitivities of CDs and Au NCs, the dual-emission nanomaterials achieved the colorimetric detection of temperature in the range from 20 degrees C to 80 degrees C and showed high reproducibility. Furthermore, by taking advantage of the high stability and biocompatibility, the CD/Au NC fluorescent hybrid nanomaterials were further applied to achieve intracellular temperature detection. We expect that this dual-emission fluorescent nanothermometer will be a promising candidate for intracellular imaging and temperature sensing at the subcellular level.
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