Aromatic polyimides for optoelectronic applications

Alanyl glycoconjugate: a selective receptor for free and protein-bound tryptophan

“…Similar observations are documented in the literature in the context of free as well as protein bound Trp recognition. 6,7 In order to understand the solvent effect, a varying amount of methanol was added to the aqueous solution of Trp, and UV-vis studies were performed. Gradual addition of methanol did not cause any shift in the l max position, however, a slight lowering of the absorbance value at the second decimal place was noticed.…”

“…Such a high value of k q is indicative of a static mode of quenching, 6,14,15 and the same is also supported by the UV-vis spectra. 7 Calculations using the Benesie-Hildebrand equation resulted in a binding constant of 1693 mol 21 . The increment in the value (580) with respect to that obtained from the absorption data indicates the strengthening in interaction between L-N2O2 and Trp in the excited state.…”

“…S4 3 ), where the m/z value of 600.9 corresponds to the close association of equimolar amounts of L-N2O2 and Trp. There are limited numbers of reports 5,7,[16][17][18] on Trp recognition by small molecules, and among them, saccharide derived receptors are scarce. We came across only two reports that deal with the interaction between amino acids and sugar containing molecules.…”

An Investigation of Fluorescence Resonance Energy Transfer between Tryptophan and Quinine Sulphate

“…It is extensively applied in medicine, food, and feed stuff and acts as a natural therapy for depression, sleeplessness, hyperactivity, and eating disorders . Indole functional group of Trp plays a significant task in the light sensitivity of biological systems . Fluorescence assets of Trp have been extensively studied due to its significance in the analysis of fluorescence properties of proteins.…”

Exploration of Fluorescence Quenching Mechanism in Tryptophan Induced by Norfloxacin: Analytical Applications

“…It is also used as a precursor for serotonin, melatonin, and quinolic acid. Indole functional group of Trp is mainly responsible in the light sensitivity of biological systems . It is extremely responsive to environment therefore used to investigate the interaction with added molecule and mark out the alterations .…”