CN108394887A - 一种发橙黄色荧光碳点的制备方法 - Google Patents

一种发橙黄色荧光碳点的制备方法 Download PDF

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CN108394887A
CN108394887A CN201810302092.7A CN201810302092A CN108394887A CN 108394887 A CN108394887 A CN 108394887A CN 201810302092 A CN201810302092 A CN 201810302092A CN 108394887 A CN108394887 A CN 108394887A
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fluorescent carbon
carbon point
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杜甫佑
程珍芳
阮贵华
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Guilin University of Technology
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Guilin University of Technology
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Abstract

本发明公开了一种发橙黄色荧光碳点的制备方法。将0.1~0.5 g邻苯二胺溶于10~20 mL过膜(0.22μm)二次水中，搅匀使其溶解，将混合液转移至体积为15~25mL的聚四氟乙烯不锈钢反应釜中140~200℃进行水热反应4~10小时；反应结束以后，经过离心、过滤、透析、冷冻干燥得到发橙黄色荧光碳点即邻苯二胺量子点。本发明工艺简单，操作简单，制备的发橙黄色荧光碳点形貌可控，粒径分散均匀，相对量子产率为52.29%，具有稳定的荧光性能。

Description

一种发橙黄色荧光碳点的制备方法
技术领域
本发明涉及一种发橙黄色荧光的碳点的制备方法。
背景技术
新型功能纳米材料的开发和应用一直是化学，工程和生物医学等各个研究领域的研究热点。碳，存在于所有有机生命的形式，在纳米材料的发展中起着至关重要的作用。从三维石墨烯、二维石墨烯和氧化石墨烯，到一维碳纳米管，碳基纳米材料继续激发科学界的优秀特性和巨大的潜在应用。作为零维碳基纳米材料之一的碳点（Carbon dots, CDs），作为基于半导体的量子点（QDs）的潜在的无毒的替代品，最近引起了在各个领域的研究人员越来越多的重视。CDs的特征荧光特性开启了其生物成像应用的时代。由于他们的量子产率，水溶性和易于合成，他们优于其他荧光碳纳米颗粒。另外，他们具有良好的物理化学和光化学稳定性；功能化和表面钝化能力进一步从生物成像扩大到生物医学的其他领域，如药物输送，基因输送，生物传感，催化等。通过化学方法调节碳点的结构/功能特性一直是该领域的突出研究方向，旨在控制碳点的激发依赖性发射分布。碳点的多色特性被追踪到碳点表面上功能基团的相对丰度，特别是芳族残基，C = N，C = O，和C-N键。
目前，CDs的制备及其机理的研究还处于初级阶段，因此，探究不同发光特性的CDs的制备以及通过功能化和表面钝化对碳点的结构及性能实现调控具有极大的科研意义和应用价值。
发明内容
本发明目的是提供一种发橙黄色荧光光的碳点材料的制备方法，将邻苯二胺溶液通过水热反应，可实现橙黄色荧光的碳点的制备。
具体步骤为:
将0.1~0.5 g邻苯二胺溶于10~20 mL过膜(0.22μm)二次水中，搅匀使其溶解，将混合液转移至体积为15~25mL的聚四氟乙烯不锈钢反应釜中140~200℃进行水热反应4~10小时；反应结束以后，经过离心、过滤、透析、冷冻干燥得到发橙黄色荧光碳点即邻苯二胺量子点。
与现有技术相比，本发明的有益效果在于：
本发明选择一种原料既作为碳源又是修饰基团，采用简单的水热法合成环保无毒的发橙黄色荧光的碳点，其中经过胺基修饰的零维纳米结构碳点具有较强荧光性能，相对量子产率为52.29%。该方法制备的碳点材料在生物传感和生物成像具有广阔的应用前景。本制备方法安全性好、成本低廉、对环境友好、光学性能优良，适用于工业化生产。本发明工艺简单，操作简单，制备的碳点形貌可控，粒径分散均匀。
附图说明
图1为本发明实施例得到的碳点的扫描发射光谱图。
图2为本发明实施例得到的碳点在紫外灯照射下的图片。
图3为本发明实施例得到的碳点在自然光照射下的图片。
图4为本发明实施例得到的碳点的吸收光谱图。
图5为本发明实施例得到的碳点的荧光发射光谱图。
图6为本发明实施例得到的碳点的傅里叶-红外光谱图。
具体实施方式
实施例：
将0.1 g邻苯二胺和10 mL过膜（0.22 μm）二次水混合均匀，转移到 20 mL聚四氟乙烯不锈钢反应釜中，置于180 ℃烘箱中进行水热反应8小时；反应液冷后，离心、过滤、透析、冷冻干燥得到发橙黄色荧光碳点，配成1 mg/mL的母液，备用。
从图1可以看出，合成的碳点在270nm处有最大发射波长。
从图2可以观察到在 365 nm 紫外灯下可观察到橙黄色荧光。
从图3可以观察到在自然光下可观察到无色碳点水溶液。
从图4可以观察到碳点的水溶液在紫外区有较强的吸收，但没有明显的特征吸收。
从图5可以观察到碳点的最大激发和发射峰分别位于 270 nm 和 380 nm。

Claims (1)

1.一种发橙黄色荧光碳点的制备方法，其特征在于具体步骤为：
将0.1~0.5 g邻苯二胺溶于10~20 mL过0.22μm膜的二次水中，搅匀使其溶解，将混合液转移至体积为15~25mL的聚四氟乙烯不锈钢反应釜中140~200℃进行水热反应4~10小时；反应结束以后，经过离心、过滤、透析、冷冻干燥得到发橙黄色荧光碳点。
CN201810302092.7A 2018-04-04 2018-04-04 一种发橙黄色荧光碳点的制备方法 Pending CN108394887A (zh)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111232952A (zh) * 2020-01-13 2020-06-05 辽宁大学 一种碳纳米点的制备方法和作为酸碱指示剂的应用
CN113563877A (zh) * 2021-07-20 2021-10-29 西安工业大学 N掺杂橙色荧光碳点的制备方法及其在Ag+检测的应用

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Publication number Priority date Publication date Assignee Title
CN106753353A (zh) * 2016-12-01 2017-05-31 吉林大学 一种橙红光及近红外发射聚合物碳纳米点及其制备方法
CN106867525A (zh) * 2017-01-16 2017-06-20 华南农业大学 荧光碳量子点/介孔氧化铝复合发光材料及其制法和在氧气传感方面的应用
CN107686727A (zh) * 2017-09-01 2018-02-13 江苏瓷光光电有限公司 黄色碳量子点荧光粉及制备方法和应用

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106753353A (zh) * 2016-12-01 2017-05-31 吉林大学 一种橙红光及近红外发射聚合物碳纳米点及其制备方法
CN106867525A (zh) * 2017-01-16 2017-06-20 华南农业大学 荧光碳量子点/介孔氧化铝复合发光材料及其制法和在氧气传感方面的应用
CN107686727A (zh) * 2017-09-01 2018-02-13 江苏瓷光光电有限公司 黄色碳量子点荧光粉及制备方法和应用

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111232952A (zh) * 2020-01-13 2020-06-05 辽宁大学 一种碳纳米点的制备方法和作为酸碱指示剂的应用
CN113563877A (zh) * 2021-07-20 2021-10-29 西安工业大学 N掺杂橙色荧光碳点的制备方法及其在Ag+检测的应用

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