Nitrogen-Doped Carbon Nanodots-Ionogels: Preparation, Characterization, and Radical Scavenging Activity,ACS Nano

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Nitrogen-Doped Carbon Nanodots-Ionogels: Preparation, Characterization, and Radical Scavenging Activity
ACS Nano ( IF 15.8 ) Pub Date : 2018-01-05 00:00:00 , DOI: 10.1021/acsnano.7b07529
Carla Rizzo ₁ , Francesca Arcudi ₂ , Luka Đorđević ₂ , Nadka Tzankova Dintcheva ₃ , Renato Noto ₁ , Francesca D’Anna ₁ , Maurizio Prato _{2,

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Affiliation

Hybrid diimidazolium-based ionogels were obtained by dispersing nitrogen-doped carbon nanodots (NCNDs) in ionic liquid (IL) solutions and by using dicationic organic salts as gelators. The properties of the NCND-ionogels were studied in terms of thermal stability, mechanical strength, morphology, rheological, and microscopic analyses. Insights into the formation of the hybrid soft material were attained from kinetics of sol–gel phase transition and from estimating the size of the aggregates, obtained from opacity and resonance light-scattering measurements. We demonstrate that, on one hand, NCNDs were able to favor the gel formation both in the presence of gelating and nongelating ILs. On the other hand, the gelatinous matrix retains and, in some cases, improves the properties of NCNDs. The NCND-ionogels showed the typical fluorescence emission of the carbon dots and a notable antiradical activity, with higher efficiency as compared to the single components. The presented hybrid materials hold great promise for topical applications in antioxidant fields.

中文翻译：

氮掺杂碳纳米点离子凝胶：制备，表征和自由基清除活性。

通过将掺杂氮的碳纳米点（NCND）分散在离子液体（IL）溶液中并使用有机有机盐作为胶凝剂，可以获得基于杂二咪唑的离子凝胶。从热稳定性，机械强度，形态，流变学和微观分析等方面研究了NCND离子分子的性能。通过溶胶-凝胶相变的动力学和估计聚集体的大小（从不透明度和共振光散射测量获得），可以了解混合软材料的形成。我们证明，一方面，NCNDs能够在存在凝胶化和非凝胶化IL的情况下促进凝胶形成。另一方面，凝胶状基质保留并在某些情况下改善了NCND的性能。NCND离子分子显示出典型的碳点荧光发射和显着的抗自由基活性，与单个组分相比具有更高的效率。提出的混合材料在抗氧化剂领域的局部应用具有广阔的前景。

更新日期：2018-01-05

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