Carbon quantum dot-based fluorescent vesicles and chiral hydrogels with biosurfactant and biocompatible small molecule†,Soft Matter

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Carbon quantum dot-based fluorescent vesicles and chiral hydrogels with biosurfactant and biocompatible small molecule†
Soft Matter ( IF 2.9 ) Pub Date : 2018-06-20 00:00:00 , DOI: 10.1039/c8sm01155a
Xiaofeng Sun _{1,

2,

3,

4,

5} , Guihua Li _{5,

6,

7,

8} , Yanji Yin _{1,

2,

3,

4,

5} , Yiqiang Zhang _{1,

2,

3,

4,

5} , Hongguang Li _{1,

2,

3,

4,

5}

Affiliation

In recent years, it is heartening to witness that carbon quantum dots (CQDs), a rising star in the family of carbon nanomaterials, have displayed tremendous applications in bioimaging, biosensing, drug delivery, optoelectronics, photovoltaics and photocatalysis. However, the investigations toward self-assembly of CQDs are still in their infancy. The participation of CQDs can bring additional functions to supramolecular self-assemblies, with photoluminescent property as the most exciting aspect. Here, we introduce CQDs into two types of classic colloidal systems containing low molecular weight surfactant and gelator to construct fluorescent vesicles and chiral hydrogels. The CQD-based vesicles were constructed through electrostatic interaction between the positively charged CQDs with peripherally substituted imidazolium cations and a negatively-charged biosurfactant, i.e., sodium deoxycholate (NaDC). The chiral hydrogels were prepared by increasing the concentration of NaDC and addition of a tripeptide (glutathione, GSH). It was found that both the hydrogels and corresponding xerogels are highly photoluminescent. A solid sensing system was prepared by coating a uniform layer of the hydrogel onto the silica gel plates by doctor blade technique followed by air-drying, which was then utilized to semiquantitatively detect Cu²⁺ in aqueous solutions.

中文翻译：

具有生物表面活性剂和生物相容性小分子的基于碳量子点的荧光囊泡和手性水凝胶†

近年来，令人振奋的是，碳量子点（CQDs）是碳纳米材料家族中的一颗冉冉升起的新星，在生物成像，生物传感，药物输送，光电，光电和光催化领域已显示出巨大的应用。但是，有关CQD自组装的研究仍处于起步阶段。CQD的参与可以为超分子自组装带来更多功能，其中光致发光特性是最令人兴奋的方面。在这里，我们将CQDs引入两种类型的经典胶体系统中，这些系统包含低分子量表面活性剂和胶凝剂，以构建荧光囊泡和手性水凝胶。即脱氧胆酸钠（NaDC）。通过增加NaDC的浓度并添加三肽（谷胱甘肽，GSH）来制备手性水凝胶。已经发现水凝胶和相应的干凝胶都是高度光致发光的。通过刮刀技术将水凝胶的均匀层涂覆在硅胶板上，然后进行风干，然后将其用于半定量检测水溶液中的Cu ²⁺，从而制备了固体传感系统。

更新日期：2018-06-20

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