ZHAO Qing, CHANG Qing, YANG Jin-long etc. Preparation of Complex Carbon-dot-grafted Calcium Alginate and Its Application as Fluorescent Sensor for Cu<sup>2+</sup>[J]. Chinese Journal of Luminescence, 2014,35(3): 387-392
ZHAO Qing, CHANG Qing, YANG Jin-long etc. Preparation of Complex Carbon-dot-grafted Calcium Alginate and Its Application as Fluorescent Sensor for Cu<sup>2+</sup>[J]. Chinese Journal of Luminescence, 2014,35(3): 387-392 DOI: 10.3788/fgxb20143503.0387.
Preparation of Complex Carbon-dot-grafted Calcium Alginate and Its Application as Fluorescent Sensor for Cu2+
ion was developed based on the fluorescence quenching effect of copper ion on carbon dots (CDs). The fluorescent probe was prepared by grafting reduced carbon dots (rCDs) in calcium alginate to form a calcium alginate film (CA-rCDs). Fluorescence characteristics of the probe and interaction between the probe and metal ions were studied using fluorescence spectrophotometer and UV-Vis spectrophotometer. The results show that the fluorescence intensity of the novel probe is strong and varied with the concentration of Cu
2+
. Moreover
the quenched fluorescence intensity of probe is linearly proportional to the concentration of Cu
2+
in the range from 510
-6
to 10010
-6
molL
-1
. In addition
it is found that the probe can detect Cu
2+
repeatedly by using EDTA. This method is not only suitable for the detection of Cu
2+
but also can realize the immobilization of CDs
ensuring the probe to be recycled and reused.
关键词
Keywords
references
Barnham K J, Masters C L, Bush A I. Neurodegenerative diseases and oxidative stress[J]. Nat. Rev. Drug. Discov., 2004, 3(3):205-214. [2] Huang Q, Zhu W J, Yang L L, et al. Synthesis and properties of a new 4-aminoantipyrine Schiff-base for selective recognition of Cu2+[J]. Chin. J. Lumin.(发光学报), 2013, 34(9):1144-1148 (in Chinese). [3] Georgopoulos P G, Roy A, Yonone-Lioy M J, et al. Environmental copper: Its dynamics and human exposure issues[J]. J. Toxicol. Env. Heal. B, 2001, 4(4):341-394. [4] Ray S C, Saha A, Jana N R, et al. Fluorescent carbon nanoparticles: Synthesis, characterization, and bioimaging application[J]. J. Phys. Chem. C, 2009, 113(43):18546-18551. [5] Li H, He X, Liu Y, et al. One-step ultrasonic synthesis of water-soluble carbon nanoparticles with excellent photoluminescent properties[J]. Carbon, 2011, 49(2):605-609. [6] Bourlinos A B, Stassinopoulos A, Anglos D, et al. Surface functionalized carbogenic quantum dots[J]. Small, 2008, 4(4):455-458. [7] Dong Y, Wang R, Li G, et al. Polyamine-functionalized carbon quantum dots as fluorescent probes for selective and sensitive detection of copper ions[J]. Anal.Chem., 2012, 84(14):6220-6224. [8] Zhou L, Lin Y, Huang Z, et al. Carbon nanodots as fluorescence probes for rapid, sensitive, and label-free detection of Hg2+ and biothiols in complex matrices[J]. Chem. Commun., 2012, 48(8):1147-1149. [9] Li H, Zhai J, Sun X. Sensitive and selective detection of silver (Ⅰ) ion in aqueous solution using carbon nanoparticles as a cheap, effective fluorescent sensing platform[J]. Langmuir, 2011, 27(8):4305-4308. [10] Zhang P, Li Y H, Du Q J, et al. Adsorption of copper ions from aqueous solution by alginate/porous silicon composite material[J]. J. Qingdao Univ.(青岛大学学报), 2011, 24(1):42-47 (in Chinese). [11] Li Y, Liu F, Xia B, et al. Removal of copper from aqueous solution by carbon nanotube/calcium alginate composites[J]. J. Hazard. Mater., 2010, 177(1-3):876-880. [12] Hu S L, Tian R X, Wu L L, et al. Chemical regulation of carbon quantum dots from synthesis to photocatalytic activity[J]. Chem. Asian J., 2013, 8(5):1035-1041. [13] Ma P, Zhu L, Sun S Y, et al. Preparation and pH-sensitive reswelling of calcium alginate gel beads[J]. Chin. J. Marine Drugs (中国海洋药物), 2003, 5:35-37 (in Chinese). [14] Dong Y, Wang R, Li H, et al. Polyamine-functionalized carbon quantum dots for chemical sensing[J]. Carbon, 2012, 50(8):2810-2815. [15] Zheng H, Wang Q, Long Y, et al. Enhancing the luminescence of carbon dots with a reduction pathway[J]. Chem. Commun., 2011, 47(38):10650-10652. [16] Hu S L, Guo Y, Dong Y G, et al. Understanding the effects of the structures on the energy gaps in carbon nanoparticles from laser synthesis[J]. J. Mater. Chem., 2012, 22:12053-12057. [17] Hu S L, Dong Y G, Yang J L, et al. One-step synthesis of graphitic nanoplatelets that are decorated with luminescent carbon nanoparticles as new optical-limiting materials[J]. Chem. Asian J., 2012, 7:2711-2717. [18] Hu S L, Niu K Y, Sun J, et al. One-step synthesis of fluorescent carbon nanoparticles by laser irradiation[J]. J. Mater. Chem., 2009, 19:484-488. [19] Hou M, Na J, Shen K. Determination of sparfloxacin with CdTe/CdS quantum dots as fluorescence probes[J]. J. Acta Chim. Sinica (化学学报), 2010, 68:1437-1442 (in Chinese). [20] Li H, Qu F. Synthesis of CdTe quantum dots in sol-gel-derived composite silica spheres coated with calix arene as luminescent probes for pesticides[J]. Chem. Mater., 2007, 19(17):4148-4154. [21] Koneswaran M, Narayanaswamy R. Mercaptoacetic acid capped CdS quantum dots as fluorescence single shot probe for mercury (Ⅱ)[J]. Sens. Actuat. B: Chem., 2009, 139(1):91-96. [22] Wang H J, Zhang W Z, He C, et al. Synthesis of fluorescent probe based on FRET and its appalication in the determination for Hg2+[J]. Chin.J.Lumin.(发光学报), 2012, 33(9):1030-1036 (in Chinese). [23] Su Z H, Wang Y J, Zhao H, et al. Determination of trace copper(Ⅱ) using CdS quantum dots as a fluorescence probe[J]. Chin. J. Appl. Chem.(应用化学), 2011, 28:842-848 (in Chinese). [24] Chen X, Pradhan T, Wang F, et al. Fluorescent chemosensors based on spiroring-opening of xanthenes and related derivatives[J]. Chem. Rev., 2012, 112(3):1910-1956. [25] Chen X, Jou M J, Lee H, et al. New fluorescent and colorimetric chemosensors bearing rhodamine and binaphthyl groups for the detection of Cu2+[J]. Sens. Actuat. B: Chem., 2009, 137(2):597-602.