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Preparation of tunable full‐color emission carbon dots and their optical applications in ions detection and bio‐imaging
Journal of the American Ceramic Society ( IF 3.5 ) Pub Date : 2020-03-16 , DOI: 10.1111/jace.17112
Chao Xia 1 , Mengmeng Cao 1 , Jinfeng Xia 2 , Danyu Jiang 2 , Guohong Zhou 2 , Caiyan Yu 3 , Huili Li 1
Affiliation  

In this work, we synthesized a series of novel carbon dots (CDs) by using phenylenediamines (three isomers: o‐phenylenediamine, m‐phenylenediamine, and p‐phenylenediamine) as starting materials via facile solvothermal approach. As‐prepared CDs could emit bright blue, green, yellow, orange, and red light with relatively high PLQY, individually. Optical properties could be controlled by simply varying reaction parameters. The luminescent mechanism was investigated and analyzed in detail. Finally, the blue‐emitting CDs and green‐emitting CDs showed many appealing properties, such as high sensitivity (limit of detection = 4.52 and 3.50 nmol/L), quick response (<2 minutes), broad response window (0‐70 nmol/L), and excellent selectivity for detecting Cr6+ and Al3+ cations, respectively. Thus, they have potential to be developed as the corresponding optical probes. While as‐prepared orange‐emitting CDs could be applied as a bio‐imaging reagent due to its long‐wavelength emission, relatively high PLQY, low toxicity, excellent water solubility, and good biocompatibility.

中文翻译:

可调全色发射碳点的制备及其在离子检测和生物成像中的光学应用

在这项工作中,我们以苯二胺(三种异构体:邻苯二胺,间苯二胺和对苯二胺)为原料,通过简便的溶剂热法合成了一系列新颖的碳点(CD)。准备好的CD可以分别发出具有较高PLQY的明亮的蓝色,绿色,黄色,橙色和红色的光。可以通过简单地改变反应参数来控制光学性质。详细研究了发光机理。最后,发蓝光的CD和发绿光的CD具有许多吸引人的特性,例如高灵敏度(检测极限= 4.52和3.50 nmol / L),快速响应(<2分钟),宽响应窗口(0-70 nmol) / L)以及检测Cr 6+和Al 3+的出色选择性阳离子。因此,它们有潜力被开发为相应的光学探针。虽然制备的橙色发光CD由于其长波长发射,相对较高的PLQY,低毒性,优异的水溶性和良好的生物相容性而可以用作生物成像试剂。
更新日期:2020-03-16
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