Spectroscopic Evaluation of Novel Adenine/Thymine-Conjugated Naphthalenediimides: Preference of Adenine-Adenine over Thymine-Thymine Intermolecular Hydrogen Bonding in Adenine- and Thymine-Functionalized Naphthalenediimides

NDI based C2‐symmetric Chiral Supramolecular Hydrogels Towards Enhanced Conductivity

“…LNTrp exhibited characteristic UV-Vis absorption bands of Tryptophan at 282 nm, and NDI at 336 nm, 364 nm, and 381 nm. [22] (Figure 3A) In LNTrp compound, the typical tryptophan and NDI chromophore peaks were intact so, the impact of the conjugation of tryptopShan on NDI chromophore absorption was low and it was characteristic of NDI chromophores' π-π* transitions that were polarized along z-axis. [23] To further gain insight into the inter-connections between the NDI chromophores and the tryptophan residues, various concentrations of the tryptophan-conjugated NDI core-based hydrogels can be investigated using UV/Vis analysis in future.…”

“…UV‐Vis absorption spectroscopy was used to investigate the effect of amino acid substituent, bipyridyl functional group isomers, and the involvement of various non‐covalent interactions on the self‐assembly and co‐assembly processes. LNTrp exhibited characteristic UV‐Vis absorption bands of Tryptophan at 282 nm, and NDI at 336 nm, 364 nm, and 381 nm [22] . (Figure 3A) In LNTrp compound, the typical tryptophan and NDI chromophore peaks were intact so, the impact of the conjugation of tryptopShan on NDI chromophore absorption was low and it was characteristic of NDI chromophores’ π–π* transitions that were polarized along z‐axis [23] .…”

The Use of Voltammetry for Sorption Studies of Arsenic (III) Ions by Magnetic Beads Functionalized with Nucleobase Hydrazide Derivatives

“…The synthesis of 9‐(2‐hydrazidoethyl)adenine was initiated from the commercially available adenine ( 1 ) following a reported procedure [20b]. In short, adenine was refluxed with ethyl acrylate in the presence of catalytic amounts of sodium ethoxide in ethanol for 18 hours to afford 3‐(adenine‐9‐yl)propionic acid ethyl ester ( 2 ).…”

“…The mixture was heated under reflux for 24 h and then the solution was cooled down to room temperature and the solvent was removed under reduced pressure. The residue was triturated with cold ethanol, filtered and dried under reduced pressure to obtain the adenine hydrazide as a colorless solid (13.9 g, 99 %) [20b].…”