π-Plasmon absorption of carbon nanotubes for the selective and sensitive detection of Fe<sup>3+</sup> ions

Cheung, William; Patel, Mehulkumar; Ma, Yufeng; Chen, Yuan; Xie, Qiaoqiao; Lockard, Jenny V.; Gao, Yuan; He, Huixin

doi:10.1039/c6sc00006a

Cited by 59 publications

(42 citation statements)

References 62 publications

(65 reference statements)

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“…The blue shifting observed in the characteristic band of CNTs in CNTs‐PLA could be owing to presence of PLA with CNTs. An additional band is revealed in the spectrum of CNTs‐PLA at 267 nm and it was reported for functionalized CNTs . The spectrum of Pd nanoparticles (Figure c) demonstrated an increasing absorption with an optical responsive shoulder band around 270 nm .…”

Section: Resultssupporting

confidence: 60%

Contribution of Polylactic Acid and Pd Nanoparticles in the Enhanced Photothermal Effect of Carbon Nanotubes

Neelgund

Oki

2020

ChemistrySelect

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The carbon nanotubes (CNTs) have been successfully modified to absorb in near‐infrared (NIR) region by synergetic functionalization with an important biopolymer, polylactic acid (PLA) and subsequent in‐situ deposition of Pd nanoparticles. This process has also extended the absorption ability of Pd nanoparticles towards NIR region apart from its classical absorption in UV and visible regions. Thus fabricated CNTs‐PLA‐Pd demonstrated excellent photothermal effect under exposure to 980 nm laser and significant stability against photo‐bleaching and corrosiveness. A stepwise increment in the photothermal effect of CNTs was attained by covalent grafting of PLA and successive deposition of Pd nanoparticles. The photothermal effect of CNTs‐PLA‐Pd was proportional to its concentration level and photothermal conversion efficiency calculated for CNTs‐PLA‐Pd was 26.5 %. The photothermal effect of CNTs‐PLA‐Pd under illumination to 980 nm laser was higher than that of 808 nm laser. The temperature attained during photothermal effect for CNTs‐PLA‐Pd was beyond 60 °C, which far exceeds the temperature survival level of cancer cells. Overall, the rational integration of CNTs, PLA and Pd nanoparticles in CNTs‐PLA‐Pd by reported strategy could offer a suitable avenue for advancement of cancer therapy.

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Section: Resultssupporting

confidence: 60%

Contribution of Polylactic Acid and Pd Nanoparticles in the Enhanced Photothermal Effect of Carbon Nanotubes

Neelgund

Oki

2020

ChemistrySelect

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“…The powder XRD peaks of the Eu 0.47 Tb 0.53 -CTP-COOH PVA film incorporated with different metal ions have no obvious changes as compared with the original one, indicating that the framework of the Ln-MOFs was not changed during the sensing process. The last, the competitive energy absorption between Fe 3+ ion and organic ligand CTP-COOH was another possible reason for this phenomenon 55,56 . There might be a competitive energy absorption process between ligand CTP-COOH and Fe 3+ ion in aqueous solution when the excitation spectra between the donor and receptor have a certain degree of overlap.…”

Section: Resultsmentioning

confidence: 99%

Versatile bimetallic lanthanide metal-organic frameworks for tunable emission and efficient fluorescence sensing

et al. 2018

Commun Chem

165

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Developing novel lanthanide metal-organic frameworks (Ln-MOFs) to rapidly and reliably differentiate both metal ions in solution and volatile organic compounds (VOCs) in vapor is highly challenging. Here, we describe versatile Eu 3+ /Tb 3+ -MOFs based on a flexible ligand. It is noteworthy that the film fabricated using bimetallic Eu 0.47 Tb 0.63 -MOF and polyvinyl alcohol could serve as an easy and convenient luminescent platform for distinguishing different metal ions and VOCs. The luminescent film exhibits notable fingerprint correlation between the metal ions/VOCs and the emission intensity ratio of Eu 3+ /Tb 3+ ions in Ln-MOFs. As a result, the bimetallic Ln-MOFs show fast recognition of Fe 3+ ion with a response time of <10 s, and can effectively probe styrene vapor within 4 min. Since the developed Ln-MOF film is stable and reliable, this work presents a promising strategy to explore luminescent platforms capable of effectively sensing different metal ions and VOCs.

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“…In another approach, the π plasmon absorption of carbon-based nanomaterials in the UV-region was utilized for SWCNTs for a sensitive and selective binding of ions [76]. It was observed that the strong π plasmon absorption of SWCNTs in the UV region is far more sensitive to plasmonic properties in visible and NIR regimes.…”

Section: Carbon Nanomaterials-based Plasmonic Sensorsmentioning

confidence: 99%

Carbon-Based Nanomaterials for Plasmonic Sensors: A Review

Gupta

Pathak

Semwal

2019

Sensors

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The surface plasmon resonance (SPR) technique is a remarkable tool, with applications in almost every area of science and technology. Sensing is the foremost and majorly explored application of SPR technique. The last few decades have seen a surge in SPR sensor research related to sensitivity enhancement and innovative target materials for specificity. Nanotechnological advances have augmented the SPR sensor research tremendously by employing nanomaterials in the design of SPR-based sensors, owing to their manifold properties. Carbon-based nanomaterials, like graphene and its derivatives (graphene oxide (GO)), (reduced graphene oxide (rGO)), carbon nanotubes (CNTs), and their nanocomposites, have revolutionized the field of sensing due to their extraordinary properties, such as large surface area, easy synthesis, tunable optical properties, and strong compatible adsorption of biomolecules. In SPR based sensors carbon-based nanomaterials have been used to act as a plasmonic layer, as the sensitivity enhancement material, and to provide the large surface area and compatibility for immobilizing various biomolecules, such as enzymes, DNA, antibodies, and antigens, in the design of the sensing layer. In this review, we report the role of carbon-based nanomaterials in SPR-based sensors, their current developments, and challenges.

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π-Plasmon absorption of carbon nanotubes for the selective and sensitive detection of Fe³⁺ ions

Abstract: The π-plasmon band of SWNTs can be used to selectively and sensitively detect Fe3+via the conjugation of Fe3+ selective siderophores.

Cited by 59 publications

References 62 publications

Contribution of Polylactic Acid and Pd Nanoparticles in the Enhanced Photothermal Effect of Carbon Nanotubes

Contribution of Polylactic Acid and Pd Nanoparticles in the Enhanced Photothermal Effect of Carbon Nanotubes

Versatile bimetallic lanthanide metal-organic frameworks for tunable emission and efficient fluorescence sensing

Carbon-Based Nanomaterials for Plasmonic Sensors: A Review

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π-Plasmon absorption of carbon nanotubes for the selective and sensitive detection of Fe3+ ions

Abstract: The π-plasmon band of SWNTs can be used to selectively and sensitively detect Fe3+via the conjugation of Fe3+ selective siderophores.

Cited by 59 publications

References 62 publications

Contribution of Polylactic Acid and Pd Nanoparticles in the Enhanced Photothermal Effect of Carbon Nanotubes

Contribution of Polylactic Acid and Pd Nanoparticles in the Enhanced Photothermal Effect of Carbon Nanotubes

Versatile bimetallic lanthanide metal-organic frameworks for tunable emission and efficient fluorescence sensing

Carbon-Based Nanomaterials for Plasmonic Sensors: A Review

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Product

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π-Plasmon absorption of carbon nanotubes for the selective and sensitive detection of Fe³⁺ ions