pH-sensitive nanocarriers for Ganoderma applanatum polysaccharide release via host–guest interactions

Highly sensitive rhodamine B dye-based electrochemical sensor for lactose detection

“…The bands at 698 and, 653 cm −1 were ascribed to C-H bonding mode [28]. The absorption peaks at 1646, 1606, 1365, 1303 and, 1187 cm −1 were characteristic band of the rhodamine [29]. Also, the absorption bands at 978, 631, 603 and, 445 cm −1 could show the presence of the chemical interaction between NMP and RhB [30].…”

“…The absorption band at 2921 cm −1 was indicative of N-H modes, suggesting the presence of amino or amide groups [26]. Furthermore, the bands observed at 1723, 1646, 1606, and 1365 cm −1 were linked to C=O stretching modes, pointing to the existence of carbonyl groups in the film [27][28][29][30]. Lastly, the absorption bands at 1563 and 1497 cm −1 were assigned to C=N bonds and a combination of C-H, C-C, N-H, and C=C modes, offering valuable information about the diverse molecular constituents of the RhB film [26].…”

Detection of anabolic steroidsviacyclodextrin-promoted fluorescence modulation

“…Nonetheless, the differences in how analytes 1 and 5 induce uorescence modulation are substantial, with analyte 1 leading to markedly higher degrees of uorescence modulation (vide supra). Such differences may be explained not by the Spartan computed structural information, but by the literature-reported photophysical activity of analyte 5, 28 which can interfere with analyte-induced uorescence modulation and complicate the observed results.…”

“…The selected anabolic steroids were chosen because they are included in the lists of banned and misused substances in athletic competitions. 27 Fluorophore 6 was chosen due to its efficiency in uorescence based detection systems, and in particular due to its documented ability to associate with bcyclodextrin 28 and its derivatives, 29 which has been reported both by this group 30 and others. 31 Cyclodextrins were chosen as the supramolecular hosts in this study because of their known ability to bind a variety of guest molecules, including steroids, 32 due to their ability to engage in favorable non-covalent intermolecular interactions including hydrogen bonding, hydrophobic interactions in the interior cavity, and van der Waals interactions.…”

Impact of γ-rays Irradiation on Hybrid TiO2-SiO2 Sol-Gel Films Doped with RHODAMINE 6G

“…This organic dye, from the xanthene family, is extensively used in optics, spectroscopy and in laser fields due to its intense fluorescence namely in the 500–600 nm range [ 22 ]. Moreover, several applications can be found in the literature where the evolution of its luminescent properties can be of interest regarding potential temperature sensing abilities [ 23 ] or in more exotic fields such as biomarkers [ 24 ]. R6G is known to be degraded after intense light exposure inducing a decrease in the fluorescence efficiency [ 18 ] namely after probing in the ultraviolet (UV) region [ 25 ].…”