Abstract
Copper being an essential nutrient; also pose a risk for human health in excessive amount. A simple and convenient method for the detection of trace amount of copper was employed using an optical probe R1 based on Schiff base. The probe was synthesized by Schiff base condensation of benzyl amine and 2-hydroxy-1-napthaldehyde and characterized by single X-ray diffraction, 1H NMR and FTIR. By screening its fluorescence response in a mixture of DMSO and H2O (20:80, v/v) R1 displayed a pronounced enhancement in fluorescence only upon treatment with copper. Other examined metal ions such as alkali, alkaline and transition had no influence. Within a wide pH range 5–12 R1 could selectively detect copper by interrupting ICT mechanism that results in CHEF. From Job’s plot analysis a 2:1 binding stoichiometry was revealed. The fluorescence response was linear in the range 1–10 × 10−9 M with detection limit 30 × 10−9 M. Association constant was determined as 1 × 1011 M−2 by Benesi-Hilderbrand plot. As a fast responsive probe it possesses good reproducibility and was employed for detection of copper in different water samples.
![](http://media.springernature.com/m312/springer-static/image/art%3A10.1007%2Fs10895-018-2278-4/MediaObjects/10895_2018_2278_Sch1_HTML.png)
![](http://media.springernature.com/m312/springer-static/image/art%3A10.1007%2Fs10895-018-2278-4/MediaObjects/10895_2018_2278_Sch2_HTML.png)
![](http://media.springernature.com/m312/springer-static/image/art%3A10.1007%2Fs10895-018-2278-4/MediaObjects/10895_2018_2278_Fig1_HTML.png)
![](http://media.springernature.com/m312/springer-static/image/art%3A10.1007%2Fs10895-018-2278-4/MediaObjects/10895_2018_2278_Fig2_HTML.png)
![](http://media.springernature.com/m312/springer-static/image/art%3A10.1007%2Fs10895-018-2278-4/MediaObjects/10895_2018_2278_Fig3_HTML.png)
![](http://media.springernature.com/m312/springer-static/image/art%3A10.1007%2Fs10895-018-2278-4/MediaObjects/10895_2018_2278_Fig4_HTML.png)
![](http://media.springernature.com/m312/springer-static/image/art%3A10.1007%2Fs10895-018-2278-4/MediaObjects/10895_2018_2278_Fig5_HTML.png)
![](http://media.springernature.com/m312/springer-static/image/art%3A10.1007%2Fs10895-018-2278-4/MediaObjects/10895_2018_2278_Fig6_HTML.png)
![](http://media.springernature.com/m312/springer-static/image/art%3A10.1007%2Fs10895-018-2278-4/MediaObjects/10895_2018_2278_Fig7_HTML.png)
![](http://media.springernature.com/m312/springer-static/image/art%3A10.1007%2Fs10895-018-2278-4/MediaObjects/10895_2018_2278_Fig8_HTML.png)
![](http://media.springernature.com/m312/springer-static/image/art%3A10.1007%2Fs10895-018-2278-4/MediaObjects/10895_2018_2278_Fig9_HTML.png)
![](http://media.springernature.com/m312/springer-static/image/art%3A10.1007%2Fs10895-018-2278-4/MediaObjects/10895_2018_2278_Fig10_HTML.png)
![](http://media.springernature.com/m312/springer-static/image/art%3A10.1007%2Fs10895-018-2278-4/MediaObjects/10895_2018_2278_Fig11_HTML.png)
![](http://media.springernature.com/m312/springer-static/image/art%3A10.1007%2Fs10895-018-2278-4/MediaObjects/10895_2018_2278_Fig12_HTML.png)
![](http://media.springernature.com/m312/springer-static/image/art%3A10.1007%2Fs10895-018-2278-4/MediaObjects/10895_2018_2278_Fig13_HTML.png)
![](http://media.springernature.com/m312/springer-static/image/art%3A10.1007%2Fs10895-018-2278-4/MediaObjects/10895_2018_2278_Fig14_HTML.png)
![](http://media.springernature.com/m312/springer-static/image/art%3A10.1007%2Fs10895-018-2278-4/MediaObjects/10895_2018_2278_Fig15_HTML.png)
![](http://media.springernature.com/m312/springer-static/image/art%3A10.1007%2Fs10895-018-2278-4/MediaObjects/10895_2018_2278_Fig16_HTML.png)
![](http://media.springernature.com/m312/springer-static/image/art%3A10.1007%2Fs10895-018-2278-4/MediaObjects/10895_2018_2278_Fig17_HTML.png)
Similar content being viewed by others
References
Ivo G, Jean-Marc C, Valmadimir B (2004) New green fluorescent polyvinylcarbazole copolymer with 1,8-naphthalimide side chains as chemosensor for iron cations. Polym Adv Technol 15:382–386
Zhanxian L, Lifeng Z, **aoya L, Yonghai N, Jianhong C, Liube W, Mingming Y (2012) A fluorescent color/intensity changed chemosensor for Fe3+ by photo induced electron transfer (PET) inhibition of fluoranthene derivative. Dyes Pigments 94:60–65
Mani V, Shu-Pao W (2012) A BODIPY-based colorimetric and fluorometric chemosensor for Hg (II) ions and its application to living cell imaging. Org Biomol Chem 10:5410–5416
Li J, Ling W, Bo Z, Rui-Yong W, Gui Y (2011) A fluorescence turn-on Hg2+ probe based on rhodamine with excellent sensitivity and selectivity in living cells. Open J Inorg Chem 1:16–22
Ghandhi S, Thangaraj A, Durajsamy C (2012) Development of a pyrene based “turn on” fluorescent chemosensor for Hg2+. RSC Adv 2:10605–10609
Qianni G, Qingbin Z, **aoxiao Z, **n Z (2014) Highly sensitive detection of mercury (II) in aqueous media by tetraphenylporphyrin with a metal ion receptor. Supramol Chem 26:836–842
Arunabha T, Dipendu M, Pranab D, Bijan M, Sundargopal G (2014) Synthesis of triazole linked fluorescent amino acid and carbohydrate bio-conjugates: a highly sensitive and skeleton selective multi-responsive chemosensor for Cu (II) and Pb (II)/Hg (II) ions. RSC Adv 4:1918–1928
Keyur DB, Hrishikesh SG, Bharat AM, Disha JV, Debdeep M, Vinod KJ (2012) Calix receptor edifice; scrupulous turn off fluorescent sensor for Fe (III), Co (II) and Cu (II). J Fluoresc 22:1493–1500
Shi-Rong L, Shu-Pao W (2011) An NBD-based sensitive and selective fluorescent sensor for copper (II) ion. J Fluoresc 21:1599–1605
Zhihong X, Like Z, Rui G, Tiancheng X, Chanzeng W, Zhi Z, Fengling Y (2011) A highly sensitive and selective colorimetric and off–on fluorescent chemosensor for Cu2+ based on rhodamine B derivative. Sensors Actuators B Chem 156:546–552
Muhammad S, Ki-Hwan L (2014) Selective fluorescence detection of Cu2+ in aqueous solution and living cells. J Lumin 145:843–848
Rakesh KM, Pallavi S (2007) Novel copper (II)-selective electrode based on 2,2′: 5′,2″-terthiophene in PVC matrix. Int J Electrochem Sci 2:832–847
Najua DT, Luqman AC, Zwani Z, Suraya AR (2008) Adsorption of copper from aqueous solutions by elais guineensis kernel activated carbon. J Eng Sci Technol 3:180–189
Aeju L, Jungwook C, Ok PK, Hyun** C, ** WK, Soo-Young Y, Kyeongsoon P (2013) A novel near-infrared fluorescence chemosensor for copper ion detection using click ligation and energy transfer. Chem Commun 49:5969–5971
Yeong KJ, Chang UN, Ha LK, In HH, Cheal K (2013) A Selective colorimetric and fluorescent chemosensor based-on naphthol for detection of Al3+ and Cu2+. Dyes Pigments 99:6–13
Cesar GF (2005) Relevance, essentiality and toxicity of trace elements in human health. Mol Asp Med 26:235–244
Selvaraj R, Younghun K, Cheol KJ, Jongheop Y (2004) Removal of copper from aqueous solutions by aminated and protonated mesoporous aluminas: kinetics and equilibrium. J Colloid Interface Sci 273:14–21
Pragnesh ND, Subrahmanyam N, Surendra S (2009) Kinetics and thermodynamics of copper ions removal from aqueous solution by use of activated charcoal. Indian J chem Technol 16:234–239
Chen Z, Yan S, Ning X, Yapeng L, Jiayuan X (2014) A novel highly sensitive and selective fluorescent sensor for imaging copper (II) in living cells. J Fluoresc 24:1331–1336
Hsuan-Fu W, Shu-Pao W (2013) A Pyrene-based highly selective turn-on fluorescent sensor for copper (II) ions and its application in living cell imaging. Sensors Actuators B 181:743–748
Tae GJ, Yu JN, Jae JL, Myoung ML, Sun YL, Cheal K (2015) A diaminomaleonitrile based selective colorimetric chemosensor for copper (II) and fluoride ions. New J Chem 39:2580–2587
Juanmei Z, Li Z, Wen**g L, Dozhong S, Rilong Z, Dawei P (2011) Determination of trace copper in water samples by anodic strip** voltammetry at gold microelectrode. Int J Electrochem Sci 6:4690–4699
Jafer Ahmad A, Shajudha Begum A (2012) Adsorption of copper from aqueous solution by low cost adsorbent. Arch Appl Sci Res 4:1532–1539
Seul AL, Jae JL, Jong WS, Kil SM, Cheal K (2015) A colorimetric chemosensor for the sequential detection of copper (II) and cysteine. Dyes Pigments 116:131–138
I-Ting H, Jean-Ho C, Wen-Sheng C (2011) Calix[4] arene with lower-rim β-amino α,β-unsaturated ketones containing bis-chelating sites as a highly selective fluorescence turn-On chemosensor for two copper (II) ions. Eur J Org Chem 2011:1472–1481
Shu-Pao W, Zhen-Ming H, Shi-Rong L, Peter KC (2012) A pyrene-based highly selective turn-on fluorescent sensor for copper (II) ion and its application in live cell imaging. J Fluoresc 22:253–259
Manoj K, Nagendra B, Vandana B (2010) Fluorescent chemosensor for Cu2+ ion based on iminoanthryl appended calix[4]arene. J Incl Phenom Macrocycl Chem 66:139–145
Muthaiah S, Yen-Hsing W, Ashutosh S, Mandapati VRR, Hong-Cheu L (2013) Novel pyrene- and anthracene-based Schiff base derivatives as Cu2+ and Fe3+ fluorescence turn-on sensors and for aggregation induced emissions. J Mater Chem A 1:1310–1318
Nur A, Emu H, Ibrahim Y, Alaaddin C (2009) A highly sensitive and selective fluorescent sensor for the determination of copper (II) based on a schiff base. Dyes Pigments 83:211–217
Aixiang D, Fang T, Tao W, Xutang T, Jiaxizng Y (2015) A α-cyanostilbene-modified Schiff base as efficient turn-on fluorescent chemosensor for Zn2+. J Chem Sci 127:375–382
Dehua Z, **aoyan Z (2013) Crystallization and characterization of a new fluorescent molecule based on Schiff base. JCPT 3:28–30
Lei L, Yong-Qiang D, Hong-Wei L, Wa B, Yuqing W (2010) Fluorescent chemosensor based on Schiff base for selective detection of zinc (II) in aqueous solution. Tetrahedron Lett 51:618–621
Supriti S, Titas M, Basab C, Anuradha M, Anupam B, Jaromir M, Pabitra C (2012) A water soluble Al3+ selective colorimetric and fluorescent turn-on chemosensor and its application in living cell imaging. Analyst 137:3975–3981
Mohamed NI, Salah EAS (2007) Synthesis, characterization and use of Schiff bases as fluorimetric analytical reagents. E-J Chem 4:531–535
Vinod KG, Ashok KS, Lokesh KK (2014) A turn-on fluorescent chemosensor for Zn2+ions based on antipyrine schiff base. Sensors Actuators B Chem 204:507–514
Reza A, Tayebe A, Hassan K, Majid R (2013) A new asymmetric Schiff base system as fluorescent chemosensor for Al3+ ion. Inorg Chem Commun 33:63–67
Xavier A, Srividhya N (2014) Synthesis and study of Schiff base ligand. IOSR-J Appl Chem 17:6–15
Vinod KG, Sudhir KS, Lokesh KK, Ajay KJ (2015) A highly selective colorimetric and turn-on fluorescent chemosensor based on 1-(2-pyridylazo)-2-naphthol for the detection of aluminium (III) ions. Sensors Actuators B Chem 209:15–24
Sheldrick GM (2008) A short history of SHELXL. Acta Crystallogr A 64:112–122
Westrip SP (2010) PublCIF: software for editing, validating and formatting crystallographic information files. J Appl Crystallogr 43:920–925
Zhiyuan Z, Chunming S, Aifeng L, Zhenyu Z, Dongmei Z (2015) Highly selective detection of Cr (VI) in water matrix by a simple 1,8-Naphthalimide-based turn-on fluorescent sensor. J Fluoresc 25:335–340
Olimpo G-B, Bruce KC, Claudio P, Natalia M, Marco TN, Natalia PM, Paulina P, Margarita EA (2014) Coumarin-based fluorescent probes for dual recognition of copper (II) and iron (III) ions and their application in bio-imaging. Sensors 14:1358–1371
Hyo SJ, Pil SK, Jeong WL, Jae IK, Chang SH, Jong WK, Shihai Y, ** YL, Jung HL, Taiha J, Jong SK (2009) Coumarin-derived Cu2+-selective fluorescence sensor: synthesis, mechanisms, and applications in living cells. J Am Chem Soc 131:2008–2012
Chunwei Y, Lingxin C, Jun Z, **hua L, ** L, Wenhai W, Bing Y (2011) “Off-On” based fluorescent chemosensor for Cu2+ in aqueous media and living cells. Talanta 85:1627–1633
Yan-Qin W, Ying-Lai T, Fan Y, Yong-Rui Z, Bao-Hui Y (2007) A new selective fluorescent chemosensor for Cu (II) ion based on zinc porphyrin-dipyridylamino. Inorg Chem Commun 10:443–446
Jiun-Ting Y, Wei-Chieh C, Shi-Rong L, Shu-Pao W (2014) A coumarin-based sensitive and selective fluorescent sensor for copper (II) ions. New J Chem 38:4434–4439
Shu-Pao W, Tzu-Hao W, Shi-Rong L (2010) A highly selective turn-on fluorescent chemosensor for copper (II) ion. Tetrahedron 66:9655–9658
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Sadia, M., Naz, R., Khan, J. et al. Synthesis and Evaluation of a Schiff-Based Fluorescent Chemosensors for the Selective and Sensitive Detection of Cu2+ in Aqueous Media with Fluorescence Off-On Responses. J Fluoresc 28, 1281–1294 (2018). https://doi.org/10.1007/s10895-018-2278-4
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10895-018-2278-4