CN108611090B - 一种荧光碳量子点及其制备方法和应用 - Google Patents
一种荧光碳量子点及其制备方法和应用 Download PDFInfo
- Publication number
- CN108611090B CN108611090B CN201810422282.2A CN201810422282A CN108611090B CN 108611090 B CN108611090 B CN 108611090B CN 201810422282 A CN201810422282 A CN 201810422282A CN 108611090 B CN108611090 B CN 108611090B
- Authority
- CN
- China
- Prior art keywords
- carbon quantum
- quantum dots
- fluorescent
- water
- quantum dot
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 56
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 claims abstract description 30
- 238000000034 method Methods 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 235000010323 ascorbic acid Nutrition 0.000 claims abstract description 14
- 239000011668 ascorbic acid Substances 0.000 claims abstract description 14
- 229960005070 ascorbic acid Drugs 0.000 claims abstract description 14
- OXNIZHLAWKMVMX-UHFFFAOYSA-N picric acid Chemical compound OC1=C([N+]([O-])=O)C=C([N+]([O-])=O)C=C1[N+]([O-])=O OXNIZHLAWKMVMX-UHFFFAOYSA-N 0.000 claims abstract description 10
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims abstract description 9
- 235000011114 ammonium hydroxide Nutrition 0.000 claims abstract description 9
- CBCKQZAAMUWICA-UHFFFAOYSA-N 1,4-phenylenediamine Chemical compound NC1=CC=C(N)C=C1 CBCKQZAAMUWICA-UHFFFAOYSA-N 0.000 claims abstract description 6
- 210000002966 serum Anatomy 0.000 claims abstract description 4
- 238000000799 fluorescence microscopy Methods 0.000 claims abstract description 3
- 238000001514 detection method Methods 0.000 claims description 7
- 239000007850 fluorescent dye Substances 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 4
- 238000001027 hydrothermal synthesis Methods 0.000 claims description 4
- 238000000502 dialysis Methods 0.000 claims description 3
- 238000004108 freeze drying Methods 0.000 claims description 3
- 230000035484 reaction time Effects 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 8
- 229910052799 carbon Inorganic materials 0.000 abstract description 8
- 238000006862 quantum yield reaction Methods 0.000 abstract description 7
- 235000013305 food Nutrition 0.000 abstract description 4
- 239000000825 pharmaceutical preparation Substances 0.000 abstract description 4
- 239000002994 raw material Substances 0.000 abstract description 3
- 239000002904 solvent Substances 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 10
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 9
- 239000011651 chromium Substances 0.000 description 9
- 238000002189 fluorescence spectrum Methods 0.000 description 7
- AKYHKWQPZHDOBW-UHFFFAOYSA-N (5-ethenyl-1-azabicyclo[2.2.2]octan-7-yl)-(6-methoxyquinolin-4-yl)methanol Chemical compound OS(O)(=O)=O.C1C(C(C2)C=C)CCN2C1C(O)C1=CC=NC2=CC=C(OC)C=C21 AKYHKWQPZHDOBW-UHFFFAOYSA-N 0.000 description 6
- 239000001576 FEMA 2977 Substances 0.000 description 6
- LOUPRKONTZGTKE-UHFFFAOYSA-N cinchonine Natural products C1C(C(C2)C=C)CCN2C1C(O)C1=CC=NC2=CC=C(OC)C=C21 LOUPRKONTZGTKE-UHFFFAOYSA-N 0.000 description 6
- 229960003110 quinine sulfate Drugs 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 239000012452 mother liquor Substances 0.000 description 4
- 238000010791 quenching Methods 0.000 description 4
- 230000000171 quenching effect Effects 0.000 description 4
- 238000001228 spectrum Methods 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 239000003651 drinking water Substances 0.000 description 2
- 235000020188 drinking water Nutrition 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 206010073071 hepatocellular carcinoma Diseases 0.000 description 2
- 238000002372 labelling Methods 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 206010007269 Carcinogenicity Diseases 0.000 description 1
- ZZZCUOFIHGPKAK-UHFFFAOYSA-N D-erythro-ascorbic acid Natural products OCC1OC(=O)C(O)=C1O ZZZCUOFIHGPKAK-UHFFFAOYSA-N 0.000 description 1
- 108010043121 Green Fluorescent Proteins Proteins 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- 229930003268 Vitamin C Natural products 0.000 description 1
- 238000000026 X-ray photoelectron spectrum Methods 0.000 description 1
- 238000000862 absorption spectrum Methods 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 235000006708 antioxidants Nutrition 0.000 description 1
- 238000001479 atomic absorption spectroscopy Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
- 230000007670 carcinogenicity Effects 0.000 description 1
- 231100000260 carcinogenicity Toxicity 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000004587 chromatography analysis Methods 0.000 description 1
- 229910001430 chromium ion Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000003013 cytotoxicity Effects 0.000 description 1
- 231100000135 cytotoxicity Toxicity 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 235000006486 human diet Nutrition 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 238000002329 infrared spectrum Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 201000007270 liver cancer Diseases 0.000 description 1
- 208000014018 liver neoplasm Diseases 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 208000020016 psychiatric disease Diseases 0.000 description 1
- 230000005180 public health Effects 0.000 description 1
- 238000002798 spectrophotometry method Methods 0.000 description 1
- 238000001308 synthesis method Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000009210 therapy by ultrasound Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 229940088594 vitamin Drugs 0.000 description 1
- 229930003231 vitamin Natural products 0.000 description 1
- 235000013343 vitamin Nutrition 0.000 description 1
- 239000011782 vitamin Substances 0.000 description 1
- 235000019154 vitamin C Nutrition 0.000 description 1
- 239000011718 vitamin C Substances 0.000 description 1
- 150000003722 vitamin derivatives Chemical class 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/65—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing carbon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/15—Nano-sized carbon materials
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Nanotechnology (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Pathology (AREA)
- Immunology (AREA)
- General Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Analytical Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Manufacturing & Machinery (AREA)
- Crystallography & Structural Chemistry (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
Abstract
本发明提供一种荧光碳量子点及其制备方法,该方法是将对苯二胺和氨水一并放入溶剂水中,在150~250℃下反应6~10小时以合成绿色碳点。该方法制备碳点工艺简单,原料来源广泛且价格便宣,制备条件要求低,所得碳量子点量子产率较高。所制得的碳量子点可用于水体中Cr6+、环境中TNP(2,4,6‑三硝基苯酚)的检测,也可用于食品、药物制剂、人血清样品中AA(抗坏血酸)的检测,还可在活细胞荧光成像中应用。
Description
技术领域
本发明涉及碳发光纳米材料,尤其涉及碳量子点,具体是一种荧光碳量子点及其制备方法和应用。
背景技术
在过去的几十年中,工业和其他人为过程一直不断地向环境中释放重金属离子,其中铬离子Cr(VI)与其他价态相比对公众健康更危险。例如Cr(0)和Cr(III),因为它具有较高的流动性和致癌性。因此,环境样品中Cr(VI)的测定具有重要意义,许多国家将饮用水中Cr(VI)的浓度严格控制在较低的微摩尔水平。为了监测饮用水的质量并降低工业废弃物的风险,高灵敏度和快速响应分析方法对于保证低浓度水平的Cr(VI)测定非常重要。在过去的20年中,已经成功开发了多种用于测定不同样品基质中Cr(VI)的分析技术,包括色谱法,分光光度法和原子吸收光谱法等7种。然而,这些方法大多不太方便而且需要昂贵的设备和复杂的样品预处理。因此,对Cr(VI)检测的简单,灵敏和选择性检测非常需要。碳点(CDs)由于具有高灵敏度,高选择性和操作简便等突出优点,用于检测Cr(VI)是一种很好的选择。另一方面,抗坏血酸(AA)也称为维生素C,是一种抗氧化剂,是人类饮食中重要的维生素,已被用于预防和治疗感冒、精神疾病以及癌症等。因此,对食品和药物制剂中AA含量的分析受到了相当的关注,因此开发一种简单快速的常规分析测定方法至关重要。
发明内容
本发明的目的在于提供一种新型碳量子点及其制备方法,该方法制备碳点工艺简单,原料来源广泛且价格便宣,制备条件要求低且环境友好,在一般实验室均能合成,易于推广。
本发明首先合成氮掺杂的绿色荧光碳量子点,该碳量子点可以灵敏检测Cr(VI),又基于碳量子点-Cr(VI)复合物成功构建了抗坏血酸(AA)的荧光传感器。同时,该碳量子点还可以基于内滤效应灵敏检测2,4,6-三硝基苯酚(TNP)。
本发明提供的一种荧光碳量子点的制备方法,包括如下步骤:
室温下,按质量比0.12-0.35:0.08-1.0将对苯二胺和氨水溶于水中,将溶液转移至水热反应釜中,150~250℃下反应6~10小时,过滤不溶物后得到浅红色溶液;通过500~1000Da的透析袋,在容器中透析处理至少3天,即得到纯净的碳量子点的水溶液;将其冷冻干燥后得到目标碳量子点。
所述的反应温度优选为200~250℃,反应时间优选为7~9小时。
所述对苯二胺和氨水的质量比优选为0.18-0.32:0.26-0.86。
上述方法制备的碳量子点作为荧光探针可用于水体中Cr6+的检测,根据公式cmin=3sb/S求出最低检出限为54.7nmol,线性范围0~300μmol。
所制备的碳量子点作为荧光探针可用于食品、药物制剂、人血清样品中AA的检测,根据公式cmin=3sb/S求出最低检出限为289nmol,线性范围0~500μmol。
所制备的碳量子点作为荧光探针可用于环境中TNP的检测,根据公式cmin=3sb/S求出最低检出限为199nmol,线性范围0~110μmol。
所制备的碳量子点也可在细胞荧光成像中应用。
本发明的优点与效果是:
本发明通过一步水热法即可得到碳量子点溶液,合成方法简单有效,原料廉价易得,反应条件温和且环境友好,在一般实验室均能完成,易于推广。所制备的碳量子点可用于水体中Cr6+检测,也可用于食品、药物制剂、人血清样品中AA的检测,还可用于环境中TNP的检测。
附图说明
图1为实施例1制备的碳量子点的紫外吸收光谱及荧光发射光谱
图2为实施例1制备的碳量子点的红外光谱图,图中横坐标为检测波长,纵坐标为透过率
图3为实施例1制备的碳量子点的XPS光谱图,图3(a)为碳量子点的XPS总谱,图3(b)为碳量子点的C1s谱,图3(c)为碳量子点的O1s谱,图3(d)为碳量子点的N1s谱
图4(a)为Cr6+淬灭实施例1制备的碳量子点的荧光光谱图,图4(b)为AA恢复实施例1制备的碳量子点的荧光光谱图
图5为TNP淬灭实施例1制备的碳量子点的荧光光谱图
图6为实施例1制备的碳量子点对Cr(VI)猝灭以及AA恢复激光共聚焦图,所述的细胞为人体肝癌细胞SMMC7721
图7为实施例1制备的碳量子点被TNP猝灭的激光共聚焦图,所述的细胞为人体肝癌细胞SMMC7721
具体实施方式
下面结合附图以及具体实施例对本发明做出进一步说明,实施例给出了详细的实施方式和具体的操作过程,但本发明的保护范围不限于下述的实施例。
实施例1
步骤1,室温下,将0.216g的对苯二胺和500μL的氨水(浓度25%)溶于20毫升水中,充分搅拌,超声得到澄清溶液。
步骤2,将溶液转移至50mL水热反应釜中。
步骤3,将水热釜置于烘箱中,200℃反应8小时,得到红色溶液。
步骤4,过滤不溶物后得到浅红色溶液。通过1000Da的透析袋,在玻璃容器中透析处理至少3天,即得到纯净的碳量子点的水溶液。
步骤5,将上述荧光碳量子点水溶液冷冻干燥后得到荧光碳量子点,其相对量子产率(以硫酸奎宁为标准)为13.2%。
性质表征和应用见图1
实施例2
除氨水为100μL,其余条件均与实施例1相同。其相对量子产率(以硫酸奎宁为标准)为10.1%。
实施例3
除氨水为300μL,其余条件均与实施例1相同。其相对量子产率(以硫酸奎宁为标准)为9.88%。
实施例4
除氨水为700μL,其余条件均与实施例1相同。其相对量子产率(以硫酸奎宁为标准)为10.3%。
实施例5
除氨水为900μL,其余条件均与实施例1相同。其相对量子产率(以硫酸奎宁为标准)为8.11%。
实施例6
除氨水为1100μL,其余条件均与实施例1相同。其相对量子产率(以硫酸奎宁为标准)9.56%。
实施例7
称取实施例1制备的碳量子点4mg,加入4ml二次水。配成1mg/ml的碳点母液。将0.5ml碳点母液和1.5ml二次水加入荧光比色杯中,然后向荧光杯中滴加Cr6+(0.1mol/L),每次滴加0.3μL,并测其荧光发射光谱,见图4(a)。随后向荧光杯中滴加AA(0.1mol/L),每次滴加10μL,并测其荧光发射光谱,见图4(b)。
实施例8
称取实施例1制备的碳量子点4mg,加入4ml二次水。配成1mg/ml的碳点母液。将0.5ml碳点母液和1.5ml二次水加入荧光比色杯中,然后向荧光杯中滴加TNP(0.01mol/L),每次滴加1μL,并测其荧光发射光谱(见图5)。
实施例10
实施例1制备的荧光碳量子点水溶液(5ng/mL)用于标记的人体肝癌细胞SMMC7721,如图6图7所示,细胞形态良好,可见碳量子点没有细胞毒性,可用于活细胞标记。图6为实施例1制备的碳量子点水溶液对Cr(VI)猝灭以及AA恢复激光共聚焦图,从上到下依次为:明场细胞图,暗场细胞图(绿色),明场和暗场叠加图;图7为实施例1制备的碳量子点被TNP猝灭的激光共聚焦图,从左到右依次为:暗场细胞图(绿色),暗场细胞图(绿色),明场和暗场叠加图。
Claims (8)
1.一种荧光碳量子点的制备方法,其特征在于,包括如下步骤:
室温下,按质量比0.12-0.35 :0.08-1.0将对苯二胺和浓度25%的氨水溶于水中,将溶液转移至水热反应釜中,150~250℃下反应6~10小时,过滤不溶物后得到浅红色溶液;通过500~1000Da的透析袋,在容器中透析处理至少3天,即得到纯净的碳量子点的水溶液;将其冷冻干燥后得到目标碳量子点。
2.如权利要求1所述的一种荧光碳量子点的制备方法,其特征在于,所述对苯二胺和浓度25%的氨水的质量比为0.18-0.32 :0.26-0.86。
3.如权利要求1所述的一种荧光碳量子点的制备方法,其特征在于,所述的反应温度为200~250℃,反应时间为7~9小时。
4.如权利要求3所述的一种荧光碳量子点的制备方法,其特征在于,所述的反应温度为200℃,反应时间为8小时。
5.如权利要求1或2所述方法制备的荧光碳量子点作为荧光探针在水体中检测Cr6+的应用。
6.如权利要求1或2所述方法制备的荧光碳量子点作为荧光探针在人血清样品中检测抗坏血酸的应用。
7.如权利要求1或2所述方法制备的荧光碳量子点作为荧光探针在水体中检测2,4,6-三硝基苯酚的应用。
8.如权利要求1或2所述方法制备的荧光碳量子点在细胞荧光成像中的应用。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201810422282.2A CN108611090B (zh) | 2018-05-04 | 2018-05-04 | 一种荧光碳量子点及其制备方法和应用 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201810422282.2A CN108611090B (zh) | 2018-05-04 | 2018-05-04 | 一种荧光碳量子点及其制备方法和应用 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN108611090A CN108611090A (zh) | 2018-10-02 |
CN108611090B true CN108611090B (zh) | 2020-11-10 |
Family
ID=63661932
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201810422282.2A Expired - Fee Related CN108611090B (zh) | 2018-05-04 | 2018-05-04 | 一种荧光碳量子点及其制备方法和应用 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN108611090B (zh) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109266337A (zh) * | 2018-10-09 | 2019-01-25 | 山西大学 | 一种多色荧光碳点的调控制备方法和应用 |
CN109504373B (zh) * | 2018-11-29 | 2022-01-28 | 山西大学 | 一种基于废弃柚子皮制备的氯氮双掺杂碳量子点及其制备方法和应用 |
CN109297948A (zh) * | 2018-12-15 | 2019-02-01 | 侯槿瑄 | 一种茶叶渣提取的碳量子点制备tnp检测试纸的方法 |
CN110628427A (zh) * | 2019-10-15 | 2019-12-31 | 东北林业大学 | 一种双峰发射碳量子点及其制备方法和应用 |
CN113278415B (zh) * | 2021-04-07 | 2022-10-14 | 长春工业大学 | 一种硫氮共掺杂的黄色荧光碳点的制备方法及其应用 |
CN114316962B (zh) * | 2021-12-02 | 2023-04-14 | 山西大学 | 一种N、S共掺杂碳点及其制备方法和在Cr6+检测中的应用 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106753352A (zh) * | 2016-11-15 | 2017-05-31 | 山西大学 | 一种氮掺杂的荧光碳量子点及其制备方法和应用 |
-
2018
- 2018-05-04 CN CN201810422282.2A patent/CN108611090B/zh not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106753352A (zh) * | 2016-11-15 | 2017-05-31 | 山西大学 | 一种氮掺杂的荧光碳量子点及其制备方法和应用 |
Non-Patent Citations (1)
Title |
---|
Carbon dots with concentration-tunable multicolored photoluminescence for simultaneous detection of Fe3+ and Cu2+ ions;Wang Yanbing;《Sensors and Actuators B-Chemical》;20170710;第253卷;全文 * |
Also Published As
Publication number | Publication date |
---|---|
CN108611090A (zh) | 2018-10-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN108611090B (zh) | 一种荧光碳量子点及其制备方法和应用 | |
Zhang et al. | A fluorescent aptasensor based on DNA-scaffolded silver nanoclusters coupling with Zn (II)-ion signal-enhancement for simultaneous detection of OTA and AFB1 | |
Gul et al. | A novel colorimetric/fluorometric dual-channel sensor based on phenolphthalein and Bodipy for Sn (II) and Al (III) ions in half-aqueous medium and its applications in bioimaging | |
Anton et al. | A study of the factors affecting the aluminum oxide-trihydroxyindole procedure for the analysis of catecholamines | |
CN109342385B (zh) | 一种用于快速检测食品和环境中亚硝酸盐含量的碳量子点及其应用方法 | |
CN109777412B (zh) | 一种双发射荧光碳点及其制备方法和应用 | |
CN109266333A (zh) | 一种荧光银纳米团簇探针的制备方法和应用 | |
Meng et al. | Novel chitosan-based fluorescent materials for the selective detection and adsorption of Fe3+ in water and consequent bio-imaging applications | |
Zhang et al. | Highly fluorescent carbon dots as an efficient nanoprobe for detection of clomifene citrate | |
CN106483112B (zh) | 一种荧光和比色双模式连续检测精氨酸和铜离子的方法 | |
Shang et al. | Silver nanoparticles capped with 8-hydroxyquinoline-5-sulfonate for the determination of trace aluminum in water samples and for intracellular fluorescence imaging | |
Tang et al. | Multicolor nitrogen dots for rapid detection of thiram and chlorpyrifos in fruit and vegetable samples | |
CN113201577A (zh) | 一种基于酶抑制法-碳量子点荧光淬灭效应的有机磷农残快速检测方法 | |
CN110907589B (zh) | 一种基于GQDs光催化可视化检测Cu2+的方法 | |
Tian et al. | Preparation of sulphuric acid-mediated N, S-codoped red emissive carbon dots: Applications in food dyes detection, solid-state luminescence and cell imaging | |
CN111474167B (zh) | 一种Cu-MOF-鲁米诺-H2O2化学发光体系检测Pb2+的方法 | |
CN109053711B (zh) | 一种用于汞离子检测的探针化合物及其制备方法和应用 | |
JP2006340684A (ja) | 微生物の計測方法 | |
CN109705029B (zh) | 羟基吡啶酮类化合物修饰的碳量子点及其制备和应用 | |
Lu et al. | Development and validation of a label-free colorimetric aptasensor based on the HCR and hemin/G-quadruplex DNAzyme for the determination of patulin in fruits and fruit-based products from Xinjiang (China) | |
CN107739337A (zh) | 一种镉、铝、铅离子螯合剂的制备方法 | |
Zhao et al. | Smartphone-integrated paper-based sensing platform for the visualization and quantitative detection of pymetrozine | |
CN106018398B (zh) | 一种快速定性筛查铅离子的方法 | |
CN114853921A (zh) | 一种改性壳聚糖的制备方法及对铬离子污染物检测的应用 | |
CN108444978B (zh) | 一种基于枝状金纳米结构表面增强拉曼光谱的血红素的检测方法及其应用 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201110 |
|
CF01 | Termination of patent right due to non-payment of annual fee |