Spectroscopic behavior differences between lumazine and alloxazine in the DMSO-water mixture

Truksa, Jan; Kratochvíl, Matouš; Richtar, Jan; Ivanová, Lucia; Weiter, Martin; Krajčovič, Jozef; Lukeš, Vladimı́r

doi:10.1016/j.saa.2023.122998

Cited by 2 publications

(5 citation statements)

References 35 publications

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“…From Figure 3b, the absorption spectrum showed that the DMSO organic ligand with C−H, C−S, and S�O chemical bonds exhibited strong optical absorption characteristic in the 200−300 nm wavelength range, which was caused by the absorption of S�O chemical bond. 39 From Figure 3c, compared with PbS QDs, the absorption intensity of PbS-DMSO nanoparticles was significantly enhanced in the 400− 1000 nm wavelength range and increased with the decrease of wavelength. For the optical absorption enhancement of PbS-DMSO nanoparticles at high energies, the influence of residual DMSO was first excluded, as it can be seen from the absorption spectra of DMSO organic ligands that they had almost no absorption characteristics for light with wavelengths >300 nm.…”

Section: ■ Results and Discussionmentioning

confidence: 92%

“…From Figure b,c, the absorption spectra of the DMSO organic ligand, PbS QDs, and PbS-DMSO nanoparticles showed that the surface of PbS QDs modified with the DMSO organic ligand not only maintained great long-term colloidal stability but also greatly improved the optical absorption of PbS QDs, which can increase the filtering cutoff depth and slope of the filter. From Figure b, the absorption spectrum showed that the DMSO organic ligand with C–H, C–S, and SO chemical bonds exhibited strong optical absorption characteristic in the 200–300 nm wavelength range, which was caused by the absorption of SO chemical bond . From Figure c, compared with PbS QDs, the absorption intensity of PbS-DMSO nanoparticles was significantly enhanced in the 400–1000 nm wavelength range and increased with the decrease of wavelength.…”

Section: Resultsmentioning

confidence: 99%

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Linear Variable PbS-DMSO Filter with Potentiality for Hyperspectral Imaging Applications

Zhao,

Hou,

Bai

et al. 2024

ACS Appl. Nano Mater.

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Under the synergistic effect of Mie scattering and dimethyl sulfoxide (DMSO) ligand modification, a novel linear variable PbS-DMSO filter obtained by regulating the quantity and spacing of PbS-DMSO nanoparticles exhibits continuous variable filtering capability in the wide spectral range of 500−1100 nm, with significant slope and cutoff depth of filtering. The surface modification of PbS quantum dots (QDs) with DMSO drastically enhances the light absorption, thereby increasing the cutoff depth and slope of filtering. Moreover, the modification of PbS QDs with DMSO also results in the aggregation of PbS QDs into nanoparticles with an average diameter of ∼100 nm, providing conditions for the generation of the Mie scattering effect. Based on the Mie scattering effect, by regulating the quantity and spacing of PbS-DMSO nanoparticles, not only can the absorption characteristics of PbS-DMSO nanoparticles be further enhanced to improve the cutoff depth and slope of filtering but also the absorption wavelength range can be well adjusted to achieve arbitrary adjustment of the filtering spectral range. Combined with an image sensor, the spectral reconstruction ability of the linear variable PbS-DMSO filter is further demonstrated, which provides a research idea for breaking through the limitation of the number of sampling points in traditional array QD filters.

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Section: ■ Results and Discussionmentioning

confidence: 92%

Section: Resultsmentioning

confidence: 99%

Linear Variable PbS-DMSO Filter with Potentiality for Hyperspectral Imaging Applications

Zhao,

Hou,

Bai

et al. 2024

ACS Appl. Nano Mater.

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show abstract

“…The wavelength-swept laser is the key for our HER-NIRF technique due to its superior performance compared to other available light sources [ 16 ]. Being low-cost, fast in the spectral scan, and able to perform coherent light amplification, this wavelength-swept laser can be a very powerful light source for real-time measurement in various DSMO sensing/mapping applications.…”

Section: Discussionmentioning

confidence: 99%

“…Establishing a regular solvatochromic response to various DSMO concentrations can serve as a technique for DMSO sensing. Truksa et al recently investigated the change in absorption and emission spectra of lumazine, alloxazine, and their cyanated or fluorinated derivatives with DSMO [ 16 ]. They measured the modulated spectroscopic properties by varying the water concentration in DMSO solutions.…”

Section: Introductionmentioning

confidence: 99%

“…It seemed like water–DMSO trimers were formed at this particular concentration and this sensitivity was the manifestation of changes in the local structure of the solvent, i.e., the formation or dissolution of H 2 O clusters. The authors concluded that together with its enhanced water solubility, the cyanated lumazine derivate could be used for non-destructive DMSO detection in vitro for applications [ 16 ].…”

Section: Introductionmentioning

confidence: 99%

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Monitoring Distribution of the Therapeutic Agent Dimethyl Sulfoxide via Solvatochromic Shift of Albumin-Bound Indocyanine Green

Cho,

Nouizi,

Kim

et al. 2023

Sensors

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We recently developed a novel hyperspectral excitation-resolved near-infrared fluorescence imaging system (HER-NIRF) based on a continuous-wave wavelength-swept laser. In this study, this technique is applied to measure the distribution of the therapeutic agent dimethyl sulfoxide (DMSO) by utilizing solvatochromic shift in the spectral profile of albumin-bound Indocyanine green (ICG). Using wide-field imaging in turbid media, complex dynamics of albumin-bound ICG are measured in mixtures of dimethyl sulfoxide (DMSO) and water. Phantom experiments are conducted to evaluate the performance of the HER-NIRF system. The results show that the distribution of DMSO can be visualized in the wide-field reflection geometry. One of the main purposes of the DMSO is to act as a carrier for other drugs, enhancing their effects by facilitating skin penetration. Understanding the solubility and permeability of drugs in vivo is very important in drug discovery and development. Hence, this HER-NIRF technique has great potential to advance the utilization of the therapeutic agent DMSO by mapping its distribution via the solvatochromic shift of ICG. By customizing the operational wavelength range, this system can be applied to any other fluorophores in the near-infrared region and utilized for a wide variety of drug delivery studies.

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Spectroscopic behavior differences between lumazine and alloxazine in the DMSO-water mixture

Cited by 2 publications

References 35 publications

Linear Variable PbS-DMSO Filter with Potentiality for Hyperspectral Imaging Applications

Linear Variable PbS-DMSO Filter with Potentiality for Hyperspectral Imaging Applications

Monitoring Distribution of the Therapeutic Agent Dimethyl Sulfoxide via Solvatochromic Shift of Albumin-Bound Indocyanine Green

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