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1. 西安交通大学 理学院,陕西 西安,710049
2. 西南科技大学 材料科学与工程学院,四川 绵阳,621010
3. 西安交通大学第一附属医院,陕西 西安,710061
纸质出版日期:2015-8-3,
收稿日期:2015-5-16,
修回日期:2015-7-11,
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任先艳, 刘丽华, 李瑜. 兼具磁共振响应的碳量子点光致发光材料的构筑和性能[J]. 发光学报, 2015,36(8): 861-867
REN Xian-yan, LIU Li-hua, LI Yu. Preparation and Properties of Carbon Quantum Dots-photoluminescence Materials with Magnetic Resonance Response[J]. Chinese Journal of Luminescence, 2015,36(8): 861-867
任先艳, 刘丽华, 李瑜. 兼具磁共振响应的碳量子点光致发光材料的构筑和性能[J]. 发光学报, 2015,36(8): 861-867 DOI: 10.3788/fgxb20153608.0861.
REN Xian-yan, LIU Li-hua, LI Yu. Preparation and Properties of Carbon Quantum Dots-photoluminescence Materials with Magnetic Resonance Response[J]. Chinese Journal of Luminescence, 2015,36(8): 861-867 DOI: 10.3788/fgxb20153608.0861.
碳量子点作为光功能组分和纳米载体用于构筑磁共振-荧光双模态分子探针的研究才刚刚开始.本文首次以兼作Gd
3+
源和碳源的钆喷酸单葡甲胺为前驱体
研究了热裂解温度、保温时间和加热速率对前驱体碳化程度、所得产物量子产率和Gd
3+
掺杂量的影响.结果显示
前驱体在经历合理的热裂解条件(热裂解温度不高于350 ℃)后
可简便地制得Gd
3+
螯合物掺杂的碳量子点.该碳量子点除了具有优异的发光能力外(量子产率~7.6%)
还表现出磁共振响应(纵向弛豫率~6.5 mmol
-1
Ls
-1
)
可用作磁共振-荧光双模态分子影像探针.
The study of carbon quantum dots used as either photoluminescence functional components or nano carriers for magnetic resonance-fluorescence multimodal molecular imaging probe is just beginning. In the paper
the gadopentetate monomeglumine was used as a precursor which provides simultaneously carbon sources and Gd
3+
sources. The influences of pyrolysis temperature
holding time and heating rate on the carbonization degree of the precursor
the quantum yield and the Gd
3+
content of the products were studied. When the precursor was pyrolized under reasonable condition (the pyrolysis temperature was not higher than 350 ℃)
Gd
3+
chelates dopped carbon quantum dots were facilely prepared. The carbon quantum dots not only possessing high luminous power (quantum yield ~7.6%)
but also showing good magnetic resonance response (longitudinal relaxation rate ~6.5 mmol
-1
Ls
-1
) can be used as a magnetic resonance/fluorescence multimodal molecular imaging probe.
碳量子点Gd3+螯合物荧光磁共振分子影像探针
carbon quantum dotsGd3+ chelatesfluorescencemagnetic resonancemolecular imaging probe
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