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Multicolor Luminescent Carbon Nanoparticles： Synthesis, Supramolecular Assembly with Porphyrin, Intrinsic Peroxidase-Like Catalytic Activity and Applications

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分类：O613.71[理学—无机化学;理学—化学] Q554.6[生物学—生物化学]
作者机构：[1]Division of Biological Inorganic Chemistry, State Key Laboratory of Rare Earth Resource Utilization, Laboratory of Chemical Biology, Changchun Institute Of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China, [2]Graduate School of the Chinese Academy of Sciences, Changchun, Jilin 130022, China
相关基金：This project was supported by the 973 Project （No. 2011CB936004）, the National Natural Science Foundation of China （NSFC）（Nos. 20831003, 90813001, 20833006, and 90913007） and Funds from the Chinese Academy of Sciences.

作者： Xiaohui Wang[1,2], Konggang Qu[1,2], Bailu Xu[1,2], Jinsong Ren[1], Xiaogang Qu[1]

关键词：碳纳米粒子, 过氧化物酶, 超分子组装, 催化活性, 光致发光, 卟啉类, 应用, 合成, Carbon nanoparticles, luminescence, supramolecular assembly, peroxidase, biosensing

中文摘要：

光碳 nanoparticles (CNP ) 是到 nanomaterials 的世界的新来者并且象因为他们的迷人的光致发光和潜力，是为未来 nanodevices 的有希望的积木为传统的 heavy-metals-based 量点用作无毒的代替一样处于健康和环境应用显示出大影响。此处，荧光灯 CNP 被 refluxing 与 HNO3 从蜡烛煤烟准备了并且随后由单个 centrifugation 分开了。CNP 能被实验公式 C1H0.677O0.586N0.015Na0.069 代表，并且有 20100 nm 的一种尺寸， 3.0 nm 的高度， 7.31 ns 汣癯牥的一生吗？

英文摘要：

Luminescent carbon nanoparticles （CNPs） are newcomers to the world of nanomaterials and have shown great impact in health and environmental applications as well as being promising building blocks for future nanodevices because of their fascinating photoluminescence and potential to serve as nontoxic replacements for traditional heavy-metals-based quantum dots. Herein, fluorescent CNPs have been prepared from candle soot by re fluxing with HNO3 and subsequently separated by a single centrifugation. The CNPs can be represented by the empirical formula C1Ho.677Oo.586No.o15Nao.069, and have a size of 20-100 nm, height of 3.0 nm, lifetime of 7.31 ns ＋ 0.06 ns and quantum yield of -1.7%. Further studies demonstrate that：（1）the as-prepared CNPs exhibit excellent stability in biological media and their luminescence intensity does not change with ionic strength or pH in the physiological and pathological range of pH 4.5-8.8; （2） CNPs can act as electron donors and transporters and porphyrin can assemble onto CNPs through electrostatic and ~-stacking interactions to form porphyrin-CNPs supramolecular composites; （3）CNPs have strong intrinsic peroxidase-like activity. Based on this intrinsic peroxidase activity, a simple, cheap, and highly selective and sensitive colorimetric and quantitative assay has been developed for the detection of glucose levels. This assay has been used to analyze real samples, such as diluted blood and fruit juice.