Metal ion sensing and light activated antimicrobial activity of aloe-vera derived carbon dots
Metal ion sensing and light activated antimicrobial activity of aloe-vera derived carbon dots
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DOI：
10.1007/s10854-018-9819-0
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发表时间：
2018-10-01
影响因子：
2.8
通讯作者：
Kumar, Praveen
中科院分区：
文献类型：
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作者：
Devi, Pooja;Thakur, Anupma;Kumar, Praveen
碳点（CDs）已在碳家族中成为一种具有广泛应用潜力的材料，包括化学/生物传感、光催化、生物成像等。从天然来源绿色合成这些碳点因其广泛的用途而引起了同行的极大兴趣。在此，我们提出一种简便的一步热解法，用于从芦荟提取物合成碳点，该碳点在紫外光下显示出明亮的蓝色发光，量子产率为12.3%。此外，非原位的形态、结构和光学表征揭示了它们的高质量以及在存在羧基、羟基官能团的情况下与激发无关的发射行为。进一步地，研究了这些碳点在无需任何表面修饰的情况下对水中铁（III）的传感，并评估了它们对大肠杆菌和金黄色葡萄球菌的光激活抗菌活性。
Carbon dots (CDs) have emerged out as a potential material amongst the carbon family for a wide range of applications including chemical/biological sensing, photocatalysis, bioimaging, etc. The green synthesis of these CDs from natural sources is gaining the significant interest of peer community for their wide utility. Herein, we present a facile one-step pyrolysis method for CDs synthesis from Aloe-Vera extract, which show bright blue luminescence under UV light with a quantum yield of 12.3%. Further, ex-situ morphological, structural and optical characterizations reveal their high quality and excitation independent emission behavior with the presence of carboxyl, hydroxyl functional groups. Furthermore, these CDs were studied for Fe(III) sensing in water without any surface modifications and assessed for their light activated antibacterial activity against E.Coli and Staphylococcus aureus.