Recently I am researching about FLUORESCENT SENSORS; RECENT PROGRESS; SMALL MOLECULES; ENERGY-TRANSFER; METAL-IONS; IRON; NANOPARTICLES; CHEMOSENSORS; PROBES; FOLDAMERS, Saw an article supported by the IISER Kolkata, India; CSIR, IndiaCouncil of Scientific & Industrial Research (CSIR) – India; IISER-K, India. Published in AMER CHEMICAL SOC in WASHINGTON ,Authors: Podder, D; Sasmal, S; Konar, S; Ghorai, PK; Haldar, D. The CAS is 62-23-7. Through research, I have a further understanding and discovery of 4-Nitrobenzoic acid. Recommanded Product: 4-Nitrobenzoic acid
The effect of topology on the structure, self-assembly, and selective Fe3+ binding of delta-peptides has been investigated. A series of delta-peptides with an amino acid containing dihydropyrimidinone and o-, m-, and p-aminobenzoic acids have been designed to study the structure-function relationship. A new amino acid containing dihydropyrimidinone was synthesized by the Biginelli reaction of ethyl acetoacetate, urea, and o-nitrobenzaldehyde followed by reduction with iron powder and acetic acid. X-ray crystallography sheds some light on the conformations, self-assembly, and the diverse degrees of pi-pi stacking of adjacent delta-peptide molecules. Peptides with o- or m-aminobenzoic acid form eight-membered intramolecular hydrogen-bonded turn conformations and self-assemble through intermolecular hydrogen bonds between dihydropyrimidinone units to form a butterfly-like structure. However, the delta-peptide containing p-aminobenzoic acid forms a water-mediated cage-like structure. Irrespective of the presence of the same functional groups, only the delta-peptide with o-aminobenzoic acid can selectively bind Fe3+ in methanol as well as in water. The topology plays a crucial role in the selective Fe3+ ion binding by the delta-peptide.
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Reference:
Phthalazine – Wikipedia,
,Phthalazine | C8H6N2 – PubChem