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Hydrophobic Carbon Dots from Aliphatic Compounds with One Terminal Functional Group
The Journal of Physical Chemistry C ( IF 3.3 ) Pub Date : 2019-08-29 , DOI: 10.1021/acs.jpcc.9b04479 Keyang Yin 1, 2 , Dandan Lu 3 , Liping Wang 4 , Quanxin Zhang 1 , Junying Hao 1 , Gaozhan Li 3 , Hongguang Li 3
The Journal of Physical Chemistry C ( IF 3.3 ) Pub Date : 2019-08-29 , DOI: 10.1021/acs.jpcc.9b04479 Keyang Yin 1, 2 , Dandan Lu 3 , Liping Wang 4 , Quanxin Zhang 1 , Junying Hao 1 , Gaozhan Li 3 , Hongguang Li 3
Affiliation
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In the preparation of carbon dots (C dots) through pyrolysis, organic molecules with multiple functional groups are popular, and monosubstituted compounds, such as aliphatic amines, are used only as an auxiliary component. Here, we provide a strategy to transfer aliphatic amines and aliphatic aldehydes to C dots in the absence of any other reagent under mild conditions. In a typical experiment, C dots were facilely obtained by refluxing dodecylamine (C12–NH2) in chlorobenzene, which shows blue emission with wavelength-dependent characteristics. The C dots are soluble in a variety of organic solvents and can be further processed by either gel permeation chromatography or silica gel column chromatography, which gives highly pure C dots with absolute fluorescence quantum yield over 10%. The C dots are photoluminescent in the solvent-free state and can be used as fluorescent ink. They are also compatible with polymers such as poly(methyl methacrylate) and polydimethylsiloxane. Influence of the type of functional group was checked. Blue-emitting C dots were obtained as well by refluxing dodecanal in chlorobenzene, but using a compound bearing a carboxylic or hydroxy group only showed little success.
中文翻译：
具有一个末端官能团的脂肪族化合物的疏水碳点
在通过热解制备碳点（C点）中，具有多个官能团的有机分子是普遍的，并且单取代的化合物例如脂族胺仅用作辅助组分。在这里，我们提供了在温和条件下在没有任何其他试剂的情况下将脂族胺和脂族醛转移到C点的策略。在一个典型的实验中，通过回流十二烷基胺（C 12 -NH 2）在氯苯中，显示出具有与波长相关的特性的蓝色发射。C点可溶于多种有机溶剂，并且可以通过凝胶渗透色谱法或硅胶柱色谱法进行进一步处理，从而得到具有绝对荧光量子产率超过10％的高纯度C点。C点在无溶剂状态下是光致发光的，并且可以用作荧光墨水。它们还与诸如聚甲基丙烯酸甲酯和聚二甲基硅氧烷的聚合物相容。检查了官能团类型的影响。也可以通过使十二烷在氯苯中回流获得发蓝光的C点，但是使用带有羧基或羟基的化合物收效甚微。
更新日期：2019-08-30
中文翻译：
具有一个末端官能团的脂肪族化合物的疏水碳点
在通过热解制备碳点（C点）中，具有多个官能团的有机分子是普遍的，并且单取代的化合物例如脂族胺仅用作辅助组分。在这里，我们提供了在温和条件下在没有任何其他试剂的情况下将脂族胺和脂族醛转移到C点的策略。在一个典型的实验中，通过回流十二烷基胺（C 12 -NH 2）在氯苯中，显示出具有与波长相关的特性的蓝色发射。C点可溶于多种有机溶剂，并且可以通过凝胶渗透色谱法或硅胶柱色谱法进行进一步处理，从而得到具有绝对荧光量子产率超过10％的高纯度C点。C点在无溶剂状态下是光致发光的，并且可以用作荧光墨水。它们还与诸如聚甲基丙烯酸甲酯和聚二甲基硅氧烷的聚合物相容。检查了官能团类型的影响。也可以通过使十二烷在氯苯中回流获得发蓝光的C点，但是使用带有羧基或羟基的化合物收效甚微。
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