Plasmon-induced near-infrared fluorescence enhancement of single-walled carbon nanotubes

Amirjani, Amirmostafa; Tsoulos, Ted V.; Sajjadi, Sayyed Hashem; Antonucci, Alessandra; Wu, Sheng-Hai; Tagliabue, Giulia; Haghshenas, Davoud Fatmehsari; Boghossian, Ardemis A.

doi:10.1016/j.carbon.2022.03.040

Cited by 22 publications

(15 citation statements)

References 105 publications

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“…This phenomenon is known as surface plasmon resonance (SPR) and has plenty of applications in many disciplines, from sensing to novel therapy approaches. [20][21][22][23][24][25][26][27] The main advantage of plasmonic nanostructures as photosensitizers compared to the other nanomaterials is the tunability of the SPR phenomenon in a broad wavelength range. From an engineering point of view, surface plasmon resonance is highly dependent on the morphology, size, and composition of the plasmonic nanostructure, which can give one the ability to control the wavelength of light-matter interaction.…”

Section: Mechanism Of Nanophotosensitizersmentioning

confidence: 99%

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Plasmon-enhanced nano-photosensitizers: game-changers in photodynamic therapy of cancers

et al. 2023

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Section: Mechanism Of Nanophotosensitizersmentioning

confidence: 99%

“…This phenomenon is known as surface plasmon resonance (SPR) and has plenty of applications in many disciplines, from sensing to novel therapy approaches. 20–27…”

Section: Mechanism Of Nano-photosensitizersmentioning

confidence: 99%

Plasmon-enhanced nano-photosensitizers: game-changers in photodynamic therapy of cancers

et al. 2023

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“…[5][6][7][8][9][10][11][12] However, these complexes suffer from lower QYs (0.1-1%) compared with most conventional fluorophores, which reduces the penetration depth of these sensors. 6,13 Several strategies have been proposed for enhancing the QY of SWCNTs in aqueous solutions, including directed evolution of DNA wrapping, 6 addition of reducing agents, [14][15][16] incorporation of defect quantum states, 17 admixture with electrolytes, 18,19 brightening by a dye through resonance energy transfer, 20 and the use of plasmonic nanoparticles. 13,20 The directed evolution method has been implemented to screen the ssDNA wrapping libraries, leading to a bright ssDNA-SWCNT conjugate.…”

Section: Introductionmentioning

confidence: 99%

“…6,13 Several strategies have been proposed for enhancing the QY of SWCNTs in aqueous solutions, including directed evolution of DNA wrapping, 6 addition of reducing agents, [14][15][16] incorporation of defect quantum states, 17 admixture with electrolytes, 18,19 brightening by a dye through resonance energy transfer, 20 and the use of plasmonic nanoparticles. 13,20 The directed evolution method has been implemented to screen the ssDNA wrapping libraries, leading to a bright ssDNA-SWCNT conjugate. 6 It is a novel approach that can increase the QY of ssDNA-SWCNT by 56% following two evolution cycles.…”

Section: Introductionmentioning

confidence: 99%

Photoluminescence brightening of single-walled carbon nanotubes through conjugation with graphene quantum dots

Sajjadi

Reggente

et al. 2023

Preprint

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Spanning the tissue transparency window, the near-infrared (NIR) photoluminescence (PL) of single-walled carbon nanotubes (SWCNTs) can optically penetrate biological tissue for deep-tissue imaging and optical sensing. SWCNTs are often functionalized with single-stranded DNA (ssDNA) to yield biocompatible, responsive, and selective sensors. However, the low brightness of these ssDNA-wrapped SWCNTs sensors restricts the depth at which such sensors can be implanted in the tissue. This work demonstrates the PL enhancement of ssDNA-wrapped SWCNTs by incorporating biocompatible graphene quantum dots (GQDs). Two kinds of GQDs, pristine (PGQDs) and nitrogen-doped (NGQDs), were fabricated and characterized. Thermodynamically, both GQDs were shown to significantly increase the fluorescence efficiency of ssDNA-SWCNTs with the same degree of PL enhancement after 3 h. Furthermore, a correlation between the diameter of the SWCNTs and the PL enhancement factor was found; the larger the SWCNT diameter, the higher the PL increase upon adding GQDs. For instance, a 30-fold enhancement was achieved for (8,6) chirality while it was only 2-fold for the (6,5) chirality. Our experiments showed that adding GQDs increases the surface coverage of SWCNTs suspended by ssDNA, limiting water molecules’ access to the nanotube surface, thus increasing the fluorescence efficiency. Kinetically, NGQDs brightened SWCNTs much faster than PGQDs. The PL intensity reached a plateau in 2 min following the addition of NGQDs, while it was still increasing even after 1 h upon the addition of PGQDs. We show that NGQDs can act as reducing agents to decrease the amount of dissolved oxygen, which quenches the SWCNTs PL. This advancement provides a promising tool for engineering the brightness of NIR sensors for biomedical applications such as single-molecule imaging of individual SWCNTs using NIR confocal microscopy and deep tissue sensing.

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“…In a similar study, CQD-based nanocomposite with silver nanostructure was used for methimazole determination (an antithyroid drug) . Other mechanisms can also be used to develop a CQD-based fluorometric detection, such as fluorescence enhancement, photo-induced electron transfer (PET), and inner filter effect (IFE). ,− …”

Section: Introductionmentioning

confidence: 99%

Intrinsic Dual-Emitting Carbon Quantum-Dot-Based Selective Ratiometric Fluorescent Mercaptopurine Detection

Saboorizadeh

Zare‐Dorabei

2022

ACS Biomater. Sci. Eng.

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, an immunosuppressive drug, has been widely prescribed for treating leukemia and autoimmune diseases. The level of the 6-MP drug in body fluids is of great interest due to the severe health problems related to its overdose. This study used a facile microwave preparation route to synthesize carbon quantum dots (CQDs) using glutathione and formamide as carbon sources. The obtained monodispersed quantum dots showed dual fluorescence emission with a sensitive affinity toward the 6-MP drug. The sensor's response was optimized by tuning the temperature, pH, and volume ratio of the probe. The prepared ratiometric fluorescence method showed accurate measurements for determining mercaptopurine in aqueous solutions in the concentration range of 1.4−7.6 mg L −1 with the limit of detection of 1.3 mg L −1 . The sensor's performance was assessed in complex solutions, human urine, and human plasma sample and recovery values in the range of 88− 127% were obtained. The reliable dual fluorometric sensor showed promising results for 6-MP determination and potential application for the determination of other chemical and biochemical species.

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Plasmon-induced near-infrared fluorescence enhancement of single-walled carbon nanotubes

Cited by 22 publications

References 105 publications

Plasmon-enhanced nano-photosensitizers: game-changers in photodynamic therapy of cancers

Plasmon-enhanced nano-photosensitizers: game-changers in photodynamic therapy of cancers

Photoluminescence brightening of single-walled carbon nanotubes through conjugation with graphene quantum dots

Intrinsic Dual-Emitting Carbon Quantum-Dot-Based Selective Ratiometric Fluorescent Mercaptopurine Detection

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