β-Cyclodextrin and calix[4]arene-25,26,27,28-tetrol capped carbon dots for selective and sensitive detection of fluoride

被引：64

作者：

Baruah, Upama ^{[1
]}

Gogoi, Neelam ^{[1
]}

Majumdar, Gitanjali ^{[2
]}

Chowdhury, Devasish ^{[1
]}

机构：

[1] Inst Adv Study Sci & Technol, Mat Nanochem Lab, Div Phys Sci, Garchuk 781035, Guwahati, India

[2] Assam Engn Coll, Dept Chem, Jalukbari 781013, Guwahati, India

来源：

CARBOHYDRATE POLYMERS | 2015年 / 117卷

关键词：

Chitosan; Carbon dots; Capping; Fluorescence quenching; Fluorescence enhancement; Sensing; FLUORESCENT SENSING PLATFORM; QUANTUM DOTS; CROWN-ETHER; METAL-IONS; C-DOTS; PROBES;

D O I：

10.1016/j.carbpol.2014.09.083

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

In this work we have designed a novel system based on carbon dots prepared from chitosan gel capped with beta-cyclodextrin and calix[4]arene-25,26,27,28-tetrol for sensitive and selective detection of fluoride ions in aqueous media. Fluorescent carbon dots prepared from chitosan gel when capped with beta-cyclodextrin and calix[4]arene-25,26,27,28-tetrol results in quenching of its fluorescence intensity. Introduction of F- ions to carbon dots capped with beta-cyclodextrin and calix[4]arene-25,26,27,28-tetrol system results in enhancement and restoration of fluorescence intensity leading to detection of F- ion. Minimum detection limit was determined to be similar to 6.6 mu M. The detection is selective as with other halide ions i.e. Cl-, Br- and I- and hydroxyl ion (OH-), there is observed decrease of fluorescence intensity. A possible mechanism to justify the observation is also discussed in the paper. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：377 / 383

页数：7

共 37 条

[1] FLUORESCENCE DETECTION IN CAPILLARY ELECTROPHORESIS - EVALUATION OF DERIVATIZING REAGENTS AND TECHNIQUES [J].

ALBIN, M ;

WEINBERGER, R ;

SAPP, E ;

MORING, S .

ANALYTICAL CHEMISTRY, 1991, 63 (05) :417-422

[2] Recent Trends in Macro-, Micro-, and Nanomaterial-Based Tools and Strategies for Heavy-Metal Detection [J].

Aragay, Gemma ;

Pons, Josefina ;

Merkoci, Arben .

CHEMICAL REVIEWS, 2011, 111 (05) :3433-3458

[3] Properties of surface-cross-linked micelles probed by fluorescence spectroscopy and their catalysis of phosphate ester hydrolysis [J].

Chadha, Geetika ;

Zhao, Yan .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2013, 390 :151-157

[4] Synthesis of novel nanocrystals as fluorescent sensors for Hg2+ ions [J].

Chen, B ;

Ying, Y ;

Zhou, ZT ;

Zhong, P .

CHEMISTRY LETTERS, 2004, 33 (12) :1608-1609

[5] Luminescent CdS quantum dots as selective ion probes [J].

Chen, YF ;

Rosenzweig, Z .

ANALYTICAL CHEMISTRY, 2002, 74 (19) :5132-5138

[6] Fluorescent carbon dots obtained from chitosan gel [J].

Chowdhury, Devasish ;

Gogoi, Neelam ;

Majumdar, Gitanjali .

RSC ADVANCES, 2012, 2 (32) :12156-12159

[7] Fluorescent diaza crown ether sensitive to complexation, conformation and microenvironment [J].

Collins, GE ;

Choi, LS .

CHEMICAL COMMUNICATIONS, 1997, (12) :1135-1136

[8] A surface enhanced Raman scattering probe for highly selective and ultra sensitive detection of iodide in water and salt samples [J].

Dasary, Samuel S. R. ;

Ray, Paresh Chandra ;

Singh, Anant Kumar ;

Arbneshi, Tahir ;

Yu, Hongtao ;

Senapati, Dulal .

ANALYST, 2013, 138 (04) :1195-1203

[9] Polyamine-Functionalized Carbon Quantum Dots as Fluorescent Probes for Selective and Sensitive Detection of Copper Ions [J].

Dong, Yongqiang ;

Wang, Ruixue ;

Li, Geli ;

Chen, Congqiang ;

Chi, Yuwu ;

Chen, Guonan .

ANALYTICAL CHEMISTRY, 2012, 84 (14) :6220-6224

[10] Carbon dots-based fluorescent probes for sensitive and selective detection of iodide [J].

Du, Fangkai ;

Zeng, Fang ;

Ming, Yunhao ;

Wu, Shuizhu .

MICROCHIMICA ACTA, 2013, 180 (5-6) :453-460

← 1 2 3 4 →