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Wu J, Li J, Cheng M, Li L, Yan R, Yue J. Water-soluble near-infrared AgInS 2 quantum dots for Ca 2+ detection and bioimaging. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 322:124859. [PMID: 39047666 DOI: 10.1016/j.saa.2024.124859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2024] [Revised: 07/01/2024] [Accepted: 07/20/2024] [Indexed: 07/27/2024]
Abstract
Calcium ions (Ca2+) are key players in intracellular signaling as second messengers and play a pivotal role in various physiological processes. In this study, near-infrared water-soluble AgInS2 quantum dots (AIS QDs) for Ca2+ detection were synthesized by a one-step hydrothermal method. The fluorescence quantum yield (PL QY) of the quantum dots was as high as 23.99 %. With low cytotoxicity and good fluorescence properties, as well as short reaction time, the ternary AIS QDs have excellent synthesis efficiency and quantum yield, which are advantageous for Ca2+ detection and bioimaging applications. The fluorescence quenching of the quantum dots showed a clear linear relationship with calcium ion concentration in the range of 0-250 μM (detection limit: 0.65 μM). Confocal imaging experiments demonstrate the excellent biofluorescence imaging capability of AIS QDs. By tuning the Ag/In molar ratio, AIS QDs can achieve fluorescence emission in the near-infrared wavelength band (620-700 nm), and the near-infrared fluorescence imaging has deeper tissue penetration, less tissue absorption and photodamage, and lower interference of spontaneous fluorescence, which further expands the potential of QDs for bioimaging applications.
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Affiliation(s)
- Jie Wu
- Nanophotonics and Biophotonics Key Laboratory of Jilin Province, School of Physics, Changchun University of Science and Technology, Changchun 130022, China; CAS Key Laboratory of Bio Medical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, China
| | - Jinhua Li
- Nanophotonics and Biophotonics Key Laboratory of Jilin Province, School of Physics, Changchun University of Science and Technology, Changchun 130022, China.
| | - Mingming Cheng
- CAS Key Laboratory of Bio Medical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, China
| | - Li Li
- CAS Key Laboratory of Bio Medical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, China
| | - Ruhong Yan
- Department of Clinical Laboratory, Suzhou Hospital, Affiliated Hospital of Medical School, Nanjing University, Suzhou 215153, China.
| | - Juan Yue
- CAS Key Laboratory of Bio Medical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, China.
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2
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Chatterjee S, Lou XY, Liang F, Yang YW. Surface-functionalized gold and silver nanoparticles for colorimetric and fluorescent sensing of metal ions and biomolecules. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214461] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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3
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Abstract
Monodispersed cross-linked poly(acrylic acid) (PAA) droplets (PAA X-droplets), prepared using the microfluidic method with in situ ultraviolet curing, were used as small spherical sensors to simultaneously detect both Ca2+ and Mg2+ in human saliva and serum. The PAA X-droplet treated with KOH (PAAKOH X-droplet) was used as a reference droplet because of its highly swollen state. The PAAKOH X-droplets shrunk in response to the presence of divalent metal ions (Ms) by forming a bridged structure of COO-M-OOC. The sizes of the PAAKOH X-droplets were precisely and dynamically monitored in the poly(dimethylsiloxane) (PDMS) channel with passing time when the aqueous metal-ion solutions were flowing at a controlled flow rate. The sizes of the PAAKOH X-droplets continuously decreased to the saturated constant size. The saturated size of the PAAKOH X-droplet did not change; however, the speed of size reduction increased with an increase in the concentration of the divalent metal ion. The saturated size was studied using the saturated diameter ratio (Rsat-dia) with respect to the initial diameter of the PAAKOH X-droplet before the metal-ion treatment, and the speed of the size reduction was investigated using the inverse time to reach half the saturated diameter reduction (T1/2-1). Ca2+ and Mg2+ exhibited Rsat-dia values of 75.9 and 83.6%, respectively, when the flow rate was 5 μL min-1, regardless of the metal concentration. The T1/2-1s for the Ca2+ and Mg2+ linearly increased with an increase in their concentrations. The Rsat-dia of the aqueous Ca2+/Mg2+ mixture solution had a linear relationship with φ [= CCa/(CCa + CMg), where CCa and CMg are the molar concentrations of Ca2+ and Mg2+, respectively]. The T1/2-1 of the aqueous Ca2+, Mg2+ mixture solution was calculated by adding the individual T1/2-1s of pure aqueous Ca2+ and Mg2+ solutions. Using the Rsat-dia and T1/2-1 of the Ca2+/Mg2+ mixture aqueous solution, the individual CCa and CMg in the mixture solution were successfully calculated. This method was applied to the human saliva and serum in which the major metal ions are Ca2+ and Mg2+, and other metal ions existed in undetectable amounts by the PAAKOH X-droplets. This method is simple, cost-effective, and highly accurate and solves the hurdles of separating the interference effect of a Mg2+ ion when a Ca2+ ion is measured in biofluids.
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Affiliation(s)
- Hao Tan
- School of Applied Chemical Engineering, Polymeric Nano Materials Laboratory, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Soo-Young Park
- School of Applied Chemical Engineering, Polymeric Nano Materials Laboratory, Kyungpook National University, Daegu 41566, Republic of Korea
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4
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Pang S. A novel colorimetric assay for calcium ion and calmodulin detection based on gold nanoparticles. INORG NANO-MET CHEM 2020. [DOI: 10.1080/24701556.2020.1802753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Shu Pang
- College of Chemistry, Chemical Engineering and Environmental Engineering, Liaoning Shihua University, Fushun, China
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5
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Mutalik SP, Pandey A, Mutalik S. Nanoarchitectronics: A versatile tool for deciphering nanoparticle interaction with cellular proteins, nucleic acids and phospholipids at biological interfaces. Int J Biol Macromol 2020; 151:136-158. [DOI: 10.1016/j.ijbiomac.2020.02.150] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 02/13/2020] [Accepted: 02/14/2020] [Indexed: 12/12/2022]
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6
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Oh J, Eom MS, Han MS. Co-functionalization with phosphate and carboxylate on polydiacetylene for colorimetric detection of calcium ions in serum. Analyst 2020; 144:7064-7070. [PMID: 31660545 DOI: 10.1039/c9an00855a] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this study, co-functionalization with phosphate and carboxylate on polydiacetylene (PDA) was proposed to detect calcium ions in serum, inspired by biologically abundant phosphate-calcium ion and carboxylate-calcium ion binding. The cooperative interaction of calcium ions with phosphate and carboxylate in PDA induced the change of electronic properties in the backbone without aggregation of liposomes, accompanied by blue-to-purple color transition. The cooperative effect through the introduction of mixed ligands facilitated the selective detection of calcium ions over magnesium ions, which was a source of major interference in many calcium ion probes, and in the presence of major serum metal ions. The sensor system exhibited highly sensitive detection of calcium ions with an estimated limit of detection of 0.97 μM. In addition, the detection method was employed to determine the concentration of calcium ions in various serums.
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Affiliation(s)
- Jinyoung Oh
- Department of Chemistry, Gwangju Institute of Science and Technology, 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea.
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7
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Huang W, Wu T, Shallan A, Kostecki R, Rayner CK, Priest C, Ebendorff-Heidepriem H, Zhao J. A Multiplexed Microfluidic Platform toward Interrogating Endocrine Function: Simultaneous Sensing of Extracellular Ca 2+ and Hormone. ACS Sens 2020; 5:490-499. [PMID: 31939298 DOI: 10.1021/acssensors.9b02308] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Extracellular Ca2+ ([Ca2+]ex) is an important regulator of various physiological and pathological functions, including intercellular communication for synchronized cellular activities (e.g., coordinated hormone secretion from endocrine tissues). Yet it is rarely possible to concurrently quantify the dynamic changes of [Ca2+]ex and related bioactive molecules with high accuracy and temporal resolution. This work aims to develop a multiplexed microfluidic platform to enable monitoring oscillatory [Ca2+]ex and hormone(s) in a biomimetic environment. To this end, a low-affinity fluorescent indicator, Rhod-5N, is identified as a suitable sensor for a range of [Ca2+]ex based on its demonstrated high sensitivity and selectivity to Ca2+ in biomedical samples, including human serum and cell culture medium. A microfluidic chip is devised to allow for the immobilization of microscale subjects (analogous to biological tissues), precise control of the perfusion gradient at sites of interest, and integration of modalities for fluorescence measurement and enzyme-linked immunosorbent assay. As this analytical system is demonstrated to be viable to quantify the dynamic changes of Ca2+ (0.2-2 mM) and insulin (15-150 mU L-1) concurrently, with high temporal resolution, it has the potential to provide key insights into the essential roles of [Ca2+]ex in the secretory function of endocrine tissues and to identify novel therapeutic targets for human diseases.
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Affiliation(s)
- Weikun Huang
- Institute for Photonics and Advanced Sensing, School of Physical Sciences, University of Adelaide, Adelaide, South Australia 5005, Australia
- The ARC Centre of Excellence for Nanoscale BioPhotonics, Adelaide, South Australia 5005, Australia
- Adelaide Medical School, Centre of Research Excellence in Translating Nutritional Science to Good Health, The University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Tongzhi Wu
- Adelaide Medical School, Centre of Research Excellence in Translating Nutritional Science to Good Health, The University of Adelaide, Adelaide, South Australia 5005, Australia
- Institute of Diabetes, School of Medicine, Southeast University, Nanjing 210009, China
| | - Aliaa Shallan
- Future Industries Institute, University of South Australia, Mawson Lakes, South Australia 5095, Australia
- Faculty of Pharmacy, Helwan University, Cairo 11795, Egypt
| | - Roman Kostecki
- Institute for Photonics and Advanced Sensing, School of Physical Sciences, University of Adelaide, Adelaide, South Australia 5005, Australia
- The ARC Centre of Excellence for Nanoscale BioPhotonics, Adelaide, South Australia 5005, Australia
| | - Christopher K. Rayner
- Adelaide Medical School, Centre of Research Excellence in Translating Nutritional Science to Good Health, The University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Craig Priest
- Future Industries Institute, University of South Australia, Mawson Lakes, South Australia 5095, Australia
- School of Engineering, University of South Australia, Mawson Lakes, South Australia 5095, Australia
| | - Heike Ebendorff-Heidepriem
- Institute for Photonics and Advanced Sensing, School of Physical Sciences, University of Adelaide, Adelaide, South Australia 5005, Australia
- The ARC Centre of Excellence for Nanoscale BioPhotonics, Adelaide, South Australia 5005, Australia
| | - Jiangbo Zhao
- Institute for Photonics and Advanced Sensing, School of Physical Sciences, University of Adelaide, Adelaide, South Australia 5005, Australia
- The ARC Centre of Excellence for Nanoscale BioPhotonics, Adelaide, South Australia 5005, Australia
- Leibniz Institute of Photonic Technology, Jena 07745, Germany
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8
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Roopa, Kumar N, Kumar M, Bhalla V. Design and Applications of Small Molecular Probes for Calcium Detection. Chem Asian J 2019; 14:4493-4505. [PMID: 31549484 DOI: 10.1002/asia.201901149] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2019] [Indexed: 12/16/2022]
Abstract
The physiological significance of calcium ions such as the role in cellular signalling, cell growth, etc. have driven the development of methods to detect and monitor the level of Ca2+ ions, both in vivo and in vitro. Although various approaches for the detection of calcium ions have been reported, methods based on small molecular fluorescent probes have unique advantages including small probe size, easy monitoring of detection processes and applicability in biological systems. In this review article, we will discuss the progress in the development of Ca2+ -binding fluorescent probes by taking into account the types of chelating groups that have been employed for Ca2+ binding.
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Affiliation(s)
- Roopa
- Department of Chemical Sciences, IKG-Punjab Technical University, Kapurthala, 144603, Punjab, India
| | - Naresh Kumar
- Department of Chemistry, Kanya Maha Vidyalaya, Jalandhar, 144004, India
| | - Manoj Kumar
- Department of Chemistry, UGC Sponsored Centre for Advanced Studies-1, Guru Nanak Dev University, Amritsar-, 143005, Punjab, India
| | - Vandana Bhalla
- Department of Chemistry, UGC Sponsored Centre for Advanced Studies-1, Guru Nanak Dev University, Amritsar-, 143005, Punjab, India
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9
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Sahu A, Hwang Y, Vilos C, Lim JM, Kim S, Choi WI, Tae G. A novel alendronate functionalized nanoprobe for simple colorimetric detection of cancer-associated hypercalcemia. NANOSCALE 2018; 10:13375-13383. [PMID: 29786742 DOI: 10.1039/c8nr02570c] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The calcium (Ca2+) ion concentration in the blood serum is tightly regulated, and any abnormalities in the level of serum calcium ions are associated with many potentially dangerous diseases. Thus, monitoring of the Ca2+ ion concentration in the blood serum is of fundamental importance. Gold nanoparticle (GNP)-based colorimetric biosensors have enormous potential in clinical diagnostic applications due to their simplicity, versatility, and unique optical properties. In this study, we have developed an alendronate functionalized gold nanoparticle (GNP-ALD) system for the measurement of Ca2+ ion concentration in biological samples. The GNP-ALD system showed higher sensitivity towards the Ca2+ ion compared to adenosine diphosphate (ADP) or adenosine triphosphate (ATP). The strong interaction between the Ca2+ ion and ALD at the GNP/solution interface resulted in significant aggregation of the ALD conjugated GNPs, and induced a color change of the solution from red to blue, which could be visually observed with the naked eye. The interaction between the Ca2+ ion and GNP-ALD was characterized by UV-visible spectroscopy, transmission electron microscopy (TEM) imaging, and dynamic light scattering (DLS) analysis. Under the optimized conditions, the lower limit of Ca2+ ion detection using this method was found to be 25 μM and a linear response range from 25 μM to 300 μM Ca2+ ions was obtained with excellent discrimination against other metal ions. The GNP-ALD nanoprobe could successfully determine the ionized Ca2+ concentration in various serum samples and the results were validated using a commercial calcium assay kit. Moreover, as a practical application, we demonstrated the utility of this nanoprobe for the detection of cancer-associated hypercalcemia in a mouse model.
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Affiliation(s)
- Abhishek Sahu
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, 123 Cheomdan Gwagi-ro, Oryong dong, Buk-gu, Gwangju 61005, Republic of Korea.
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10
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Gao M, Li Y, Chen X, Li S, Ren L, Tang BZ. Aggregation-Induced Emission Probe for Light-Up and in Situ Detection of Calcium Ions at High Concentration. ACS APPLIED MATERIALS & INTERFACES 2018; 10:14410-14417. [PMID: 29671572 DOI: 10.1021/acsami.8b00952] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The fluorescent probe for the detection of calcium ions is an indispensable tool in the biomedical field. The millimolar order of Ca(II) ions is associated with many physiological processes and diseases, such as hypercalcemia, soft tissue calcification, and bone microcracks. However, the conventional fluorescent probes are only suitable for imaging Ca(II) ions in the nanomolar to micromolar range, which can be because of their high affinities toward Ca(II) ions and aggregation-caused quenching drawbacks. To tackle this challenge, we herein develop an aggregation-induced emission (AIE) probe SA-4CO2Na for selective and light-up detection of Ca(II) ions in the millimolar range (0.6-3.0 mM), which can efficiently distinguish between hypercalcemic (1.4-3.0 mM) and normal (1.0-1.4 mM) Ca2+ ion levels. The formation of fibrillar aggregates between SA-4CO2Na and Ca(II) ions was clearly verified by fluorescence, scanning electron microscopy, and transmission electron analysis. Moreover, this AIE-active probe can be used for wash-free and light-up imaging of a high concentration of Ca(II) ions even in the solid analytes, including calcium deposits in psammomatous meningioma slice, microcracks on bovine bone surface, and microdefects on hydroxyapatite-based scaffold. It is thus expected that this AIE-active probe would have broad biomedical applications through light-up imaging and sensing of Ca(II) ions at the millimolar level.
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Affiliation(s)
- Meng Gao
- National Engineering Research Center for Tissue Restoration and Reconstruction , South China University of Technology , Guangzhou 510006 , China
| | - Yunxia Li
- National Engineering Research Center for Tissue Restoration and Reconstruction , South China University of Technology , Guangzhou 510006 , China
| | - Xiaohui Chen
- National Engineering Research Center for Tissue Restoration and Reconstruction , South China University of Technology , Guangzhou 510006 , China
| | | | - Li Ren
- National Engineering Research Center for Tissue Restoration and Reconstruction , South China University of Technology , Guangzhou 510006 , China
| | - Ben Zhong Tang
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction , The Hong Kong University of Science & Technology , Clear Water Bay, Kowloon , Hong Kong, China
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11
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Kim DH, Hur J, Park HG, Il Kim M. Reagentless colorimetric biosensing platform based on nanoceria within an agarose gel matrix. Biosens Bioelectron 2017; 93:226-233. [DOI: 10.1016/j.bios.2016.08.113] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Revised: 08/29/2016] [Accepted: 08/31/2016] [Indexed: 10/21/2022]
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12
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Cytosine triphosphate-capped silver nanoparticles as a platform for visual and colorimetric determination of mercury(II) and chromium(III). Mikrochim Acta 2017. [DOI: 10.1007/s00604-017-2250-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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13
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Yin J, Hu Y, Yoon J. Fluorescent probes and bioimaging: alkali metals, alkaline earth metals and pH. Chem Soc Rev 2016; 44:4619-44. [PMID: 25317749 DOI: 10.1039/c4cs00275j] [Citation(s) in RCA: 417] [Impact Index Per Article: 52.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
All living species and life forms have an absolute requirement for bio-functional metals and acid-base equilibrium chemistry owing to the critical roles they play in biological processes. Hence, a great need exists for efficient methods to detect and monitor biometals and acids. In the last few years, great attention has been paid to the development of organic molecule based fluorescent chemosensors. The availability of new synthetic fluorescent probes has made fluorescence microscopy an indispensable tool for tracing biologically important molecules and in the area of clinical diagnostics. This review highlights the recent advances that have been made in the design and bioimaging applications of fluorescent probes for alkali metals and alkaline earth metal cations, including lithium, sodium and potassium, magnesium and calcium, and for pH determination within biological systems.
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Affiliation(s)
- Jun Yin
- Department of Chemistry and Nano Science, Global Top 5 Research Program, Ewha Womans University, Seoul 120-750, Korea.
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14
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A facile and sensitive detection of organophosphorus chemicals by rapid aggregation of gold nanoparticles using organic compounds. Biosens Bioelectron 2015; 67:408-12. [DOI: 10.1016/j.bios.2014.08.073] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2014] [Revised: 08/27/2014] [Accepted: 08/28/2014] [Indexed: 12/18/2022]
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15
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Guo Y, Tong X, Ji L, Wang Z, Wang H, Hu J, Pei R. Visual detection of Ca2+based on aggregation-induced emission of Au(i)–Cys complexes with superb selectivity. Chem Commun (Camb) 2015; 51:596-8. [DOI: 10.1039/c4cc07592g] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An interesting Au(i)–Cys complex was employed for the optical detection of Ca2+based on an aggregation-induced emission phenomenon. This AIE property of Au(i)–thiol complexes may provide a universal sensing strategy by employing different mercapto-appended ligands.
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Affiliation(s)
- Yahui Guo
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education)
- College of Chemistry & Molecular Sciences
- Wuhan University
- Wuhan
- 430072 China
| | - Xiaoyan Tong
- Key Laboratory for Nano-Bio Interface
- Division of Nanobiomedicine
- Suzhou Institute of Nano-Tech and Nano-Bionics
- Chinese Academy of Sciences
- Suzhou
| | - Liya Ji
- Key Laboratory for Nano-Bio Interface
- Division of Nanobiomedicine
- Suzhou Institute of Nano-Tech and Nano-Bionics
- Chinese Academy of Sciences
- Suzhou
| | - Zhili Wang
- Key Laboratory for Nano-Bio Interface
- Division of Nanobiomedicine
- Suzhou Institute of Nano-Tech and Nano-Bionics
- Chinese Academy of Sciences
- Suzhou
| | - Hongyan Wang
- Key Laboratory for Nano-Bio Interface
- Division of Nanobiomedicine
- Suzhou Institute of Nano-Tech and Nano-Bionics
- Chinese Academy of Sciences
- Suzhou
| | - Jiming Hu
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education)
- College of Chemistry & Molecular Sciences
- Wuhan University
- Wuhan
- 430072 China
| | - Renjun Pei
- Key Laboratory for Nano-Bio Interface
- Division of Nanobiomedicine
- Suzhou Institute of Nano-Tech and Nano-Bionics
- Chinese Academy of Sciences
- Suzhou
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16
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Jiang H, Zhang Y, Wang X. Single cytidine units-templated syntheses of multi-colored water-soluble Au nanoclusters. NANOSCALE 2014; 6:10355-62. [PMID: 25074428 DOI: 10.1039/c4nr02180k] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Ultra-small metallic nanoparticles, or so-called "nanoclusters" (NCs), have attracted considerable interest due to their unique optical properties that are different from both larger nanoparticles and single atoms. To prepare high-quality NCs, the stabilizing agent plays an essential role. In this work, we have revealed and validated that cytidine and its nucleotides (cytidine 5'-monophosphate or cytidine 5'-triphosphate) can act as efficient stabilizers for syntheses of multicolored Au NCs. Interestingly, Au NCs with blue, green and yellow fluorescence emissions are simultaneously obtained using various pH environments or reaction times. The transmission electron microscopy verifies that the size of Au NCs ranges from 1.5 to 3 nm. The X-ray photoelectron spectroscopy confirms that only Au (0) species are present in NCs. Generally, the facile preparation of multicolored Au NCs that are stabilized by cytidine units provides access to promising candidates for multiple biolabeling applications.
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Affiliation(s)
- Hui Jiang
- State Key Laboratory of Bioelectronics, Southeast University, Nanjing 210096, PR China.
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17
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Kim KB, Kim H, Song EJ, Kim S, Noh I, Kim C. A cap-type Schiff base acting as a fluorescence sensor for zinc(II) and a colorimetric sensor for iron(II), copper(II), and zinc(II) in aqueous media. Dalton Trans 2014; 42:16569-77. [PMID: 24067938 DOI: 10.1039/c3dt51916c] [Citation(s) in RCA: 239] [Impact Index Per Article: 23.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A simple and low cost chemosensor is described. This sensor could simultaneously detect three biologically important metal ions through fluorogenic (Zn(2+)) and chromogenic (Fe(2+), Cu(2+), and Zn(2+)) methods in aqueous solution. The sensor could function as a "turn-on" fluorescence receptor only to Zn(2+) ions. In addition, the sensor could be successfully applied to the detection of intracellular Zn(2+). Meanwhile, the sensor displayed an obvious red color upon selective binding with Fe(2+). Therefore, the sensor could serve as a useful tool for the discrimination of Fe(2+) from Fe(3+) in aqueous media. Moreover, the sensor also showed color changes from yellow to colorless upon selective binding with Zn(2+) and Cu(2+), respectively. The detection limit of the sensor for Cu(2+) (1.5 μM) is far below the guidelines of the World Health Organization (30 μM) as the maximum allowable copper concentration in drinking water, and therefore it is capable of being a practical system for the monitoring of Cu(2+) concentrations in aqueous samples. These results provide a new approach for selectively recognizing the most important three trace elements in the human body simultaneously, for Zn(2+) by emission spectra and Fe(2+), Cu(2+), and Zn(2+) by the naked eye.
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Affiliation(s)
- Kyung Beom Kim
- Department of Fine Chemistry, Seoul National University of Science and Technology, Seoul 139-743, Korea.
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18
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A fluorescent and colorimetric chemosensor for selective detection of aluminum in aqueous solution. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.01.021] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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19
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Yang B, Zhang XB, Liu WN, Hu R, Tan W, Shen GL, Yu RQ. Fluorosurfactant-capped gold nanoparticles-based label-free colorimetric assay for Au3+ with tunable dynamic range via a redox strategy. Biosens Bioelectron 2013; 48:1-5. [DOI: 10.1016/j.bios.2013.03.044] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2013] [Revised: 03/15/2013] [Accepted: 03/15/2013] [Indexed: 12/01/2022]
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20
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A parallel G-quadruplex-selective luminescent probe for the detection of nanomolar calcium(II) ion. Methods 2013; 64:212-7. [PMID: 23876936 DOI: 10.1016/j.ymeth.2013.07.021] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2013] [Revised: 07/08/2013] [Accepted: 07/11/2013] [Indexed: 12/25/2022] Open
Abstract
A parallel G-quadruplex-selective iridium(III) complex has been synthesized and employed as a luminescent probe in a label-free G-quadruplex-based detection assay for Ca(2+) ions in aqueous solution. In this assay, a guanine-rich oligonucleotide (G4, 5'-G4T4G4-3') initially exists in an antiparallel G-quadruplex conformation, resulting in a low luminescence signal. Upon incubation with Ca(2+) ions, the antiparallel G-quadruplex is induced into a parallel G-quadruplex conformation, which greatly enhances the luminescence emission of the iridium(III) probe. This method was highly sensitive for Ca(2+) ions with a limit of detection in the nanomolar range, and was selective for Ca(2+) over other metal ions.
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Singh K, Sareen D, Kaur P, Miyake H, Tsukube H. Materials-Based Receptors: Design Principle and Applications. Chemistry 2013; 19:6914-36. [DOI: 10.1002/chem.201300249] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2013] [Indexed: 12/12/2022]
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22
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Wang S, Chen Z, Chen L, Liu R, Chen L. Label-free colorimetric sensing of copper(ii) ions based on accelerating decomposition of H2O2 using gold nanorods as an indicator. Analyst 2013; 138:2080-4. [DOI: 10.1039/c3an36722c] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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A gold nanoparticles-based colorimetric assay for alkaline phosphatase detection with tunable dynamic range. Biosens Bioelectron 2012; 43:366-71. [PMID: 23356994 DOI: 10.1016/j.bios.2012.12.015] [Citation(s) in RCA: 130] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2012] [Revised: 12/03/2012] [Accepted: 12/08/2012] [Indexed: 11/21/2022]
Abstract
In this report, a simple and label-free colorimetric assay was developed for detecting alkaline phosphatase (ALP). Based on the conjugated gold nanoparticle/adenosine triphosphate (AuNP/ATP) sensing system, this assay is highly sensitive and selective. In this system, ATP induces the aggregation of cetyltrimethylammonium bromide (CTAB)-capped AuNPs and ALP stimulates the disaggregation of AuNPs by converting ATP into adenosine through an enzymatic dephosphorylation reaction. Hence, the presence of ALP can be visually observed (gray-to-red color change) and monitored by the shift of the surface plasmon resonance (SPR) absorption band of AuNPs. Furthermore, the dynamic range of the method can be varied by addition of different metal ions (e.g. 100-600unit/L to 5.0-100unit/L and 0.2-20unit/L in the presence of Ca(2+) and Pb(2+), respectively). The feasibility of this sensitive and specific assay with a tunable dynamic range was demonstrated to be consistent even in human serum samples.
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Colorimetric detection of lead (II) based on silver nanoparticles capped with iminodiacetic acid. Mikrochim Acta 2012. [DOI: 10.1007/s00604-012-0832-3] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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Eom MS, Jang W, Lee YS, Choi G, Kwon YU, Han MS. A bi-ligand co-functionalized gold nanoparticles-based calcium ion probe and its application to the detection of calcium ions in serum. Chem Commun (Camb) 2012; 48:5566-8. [DOI: 10.1039/c2cc31724a] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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