Infrared and laser Raman spectra of bis(DL-methioninium) sulfate

Ramaswamy, S.; Rajaram, R. Κ.; Ramakrishnan, V.

doi:10.1002/jrs.1358

Cited by 4 publications

(4 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This peak is also comparable with the result of Ramaswamy et all. [58]. The optical band gap was calculated by Tauc's equation [59]:…”

Section: Resultsmentioning

confidence: 99%

CHARACTERIZATION OF PbS FILM PRODUCED BY CHEMICAL BATH DEPOSITION AT ROOM TEMPERATURE

Kul¹

2019

Anadolu Üniversitesi Bilim Ve Teknoloji Dergisi - B Teorik Bilimler

View full text Add to dashboard Cite

PbS film has been produced by chemical bath deposition (CBD) method onto glass substrates using aqueous solution containing Pb(NO3)2, Na2SO3, NaOH and SC(NH2)2. The deposition was carried out at room temperature of 26°C and a stirring speed of 60 rpm for an hour. The PbS film has been characterized by x-ray diffraction, field emission scanning electron microscopy, Fourier transform infrared spectroscopy, Raman spectroscopy and optical absorption spectroscopy techniques. The PbS film is polycrystalline face centered cubic phase having randomly preferential orientation in the [101], [200], [220] and [400] directions. The texture coefficient, lattice parameter, strain, crystallite size, and dislocation density were estimated from x-ray diffraction results. Fourier transform infrared result reveals that the presence of PbS and various functional groups in PbS sample. Raman spectrum of the sample shows PbS phase and lead oxysulfates. The optical band gap of the PbS film has been studied using the optical absorbance measurement as a function of wavelength between 200 and 2750 nm. The optical direct band gap of the sample is calculated to be 1.28 eV. The optical band gap of PbS sample exhibited a blue-shift compared with that of bulk PbS.

show abstract

“…This peak is also comparable with the result of Ramaswamy et all. [58]. The optical band gap was calculated by Tauc's equation [59]:…”

Section: Resultsmentioning

confidence: 99%

CHARACTERIZATION OF PbS FILM PRODUCED BY CHEMICAL BATH DEPOSITION AT ROOM TEMPERATURE

Kul¹

2019

Anadolu Üniversitesi Bilim Ve Teknoloji Dergisi - B Teorik Bilimler

View full text Add to dashboard Cite

show abstract

“…*** P < 0.001, ** P < 0.01, * P < 0.05 and NS, non‐significant ( P > 0.05). References for band centre, molecular bond assignment and potential molecules for specific peaks are provided in the reference list .…”

Section: Resultsmentioning

confidence: 99%

Mesoscopic characterization of prostate cancer using Raman spectroscopy: potential for diagnostics and therapeutics

et al. 2018

View full text Add to dashboard Cite

Current diagnostic approaches of PCa using needle biopsies have suboptimal cancer detection rates and a significant risk of infection. Standard non-targeted random sampling results in false-negative biopsies in 15-30% of patients, which affects clinical management. RS, a non-destructive tissue interrogation technique providing vibrational molecular information, resolved the highly complex architecture of the prostate and detect cancer with high accuracy using a fibre optic probe to interrogate radical prostatectomy (RP) specimens from 32 patients (947 spectra). This proof-of-principle paves the way for the development of in vivo tumour targeting spectroscopy tools for informed biopsy collection to address the clinical need for accurate PCa diagnosis and possibly to improve surgical resection during RP as a complement to histopathological analysis.

show abstract

“…Peaks The presence of the amine group was also confirmed by the band at 1489 cm −1 due to the deformation of N-H [55]. A broad band around 3000 cm −1 was assigned to O-H stretching mode of the carboxylic group [75]. Weak sharp features in the wavenumber region 2850-3080 cm −1 were related to C-H stretching vibrations.…”

Section: Preparation and Characterization Of Ldh-samcmentioning

confidence: 82%

Layered Double Hydroxides as a Drug Delivery Vehicle for S-Allyl-Mercapto-Cysteine (SAMC)

et al. 2021

View full text Add to dashboard Cite

The intercalations of anionic molecules and drugs in layered double hydroxides (LDHs) have been intensively investigated in recent years. Due to their properties, such as versatility in chemical composition, good biocompatibility, high density and protection of loaded drugs, LDHs seem very promising nanosized systems for drug delivery. In this work, we report the intercalation of S-allyl-mercapto-cysteine (SAMC), which is a component of garlic that is well-known for its anti-tumor properties, inside ZnAl-LDH (hereafter LDH) nanostructured crystals. In order to investigate the efficacy of the intercalation and drug delivery of SAMC, the intercalated compounds were characterized using X-ray powder diffraction (XRD), Fourier-transform infrared spectroscopy (FT-IR) and scanning electron microscopy (SEM). The increase in the interlayer distance of LDH from 8.9 Å, typical of the nitrate phase, to 13.9 Å indicated the intercalation of SAMC, which was also confirmed using FT-IR spectra. Indeed, compared to that of the pristine LDH precursor, the spectrum of LDH-SAMC was richly structured in the fingerprint region below 1300 cm−1, whose peaks corresponded to those of the functional groups in the SAMC molecular anion. The LDH-SAMC empirical formula, obtained from UV-Vis spectrophotometry and thermogravimetric analysis, was [Zn0.67Al0.33(OH)2]SAMC0.15(NO3)0.18·0.6H2O. The morphology of the sample was investigated using SEM: LDH-SAMC exhibited a more irregular size and shape of the flake-like crystals in comparison with the pristine LDH, with a reduction in the average crystallite size from 3 µm to about 2 µm. In vitro drug release studies were performed in a phosphate buffer solution at pH 7.2 and 37 °C and were analyzed using UV-Vis spectrophotometry. The SAMC release from LDH-SAMC was initially characterized by a burst effect in the first four hours, during which, 32% of the SAMC is released. Subsequently, the release percentage increased at a slower rate until 42% after 48 h; then it stabilized at 43% and remained constant for the remaining period of the investigation. The LDH-SAMC complex that was developed in this study showed the improved efficacy of the action of SAMC in reducing the invasive capacity of a human hepatoma cell line.

show abstract

Infrared and laser Raman spectra of bis(DL-methioninium) sulfate

Cited by 4 publications

References 30 publications

CHARACTERIZATION OF PbS FILM PRODUCED BY CHEMICAL BATH DEPOSITION AT ROOM TEMPERATURE

CHARACTERIZATION OF PbS FILM PRODUCED BY CHEMICAL BATH DEPOSITION AT ROOM TEMPERATURE

Mesoscopic characterization of prostate cancer using Raman spectroscopy: potential for diagnostics and therapeutics

Layered Double Hydroxides as a Drug Delivery Vehicle for S-Allyl-Mercapto-Cysteine (SAMC)

Contact Info

Product

Resources

About