Mei, Leixia published the artcileSupramolecular self-assembly of fluorescent peptide amphiphiles for accurate and reversible pH measurement, Quality Control of 42074-68-0, the publication is Organic & Biomolecular Chemistry (2019), 17(4), 939-944, database is CAplus and MEDLINE.
We report the synthesis and self-assembly of fluorescent peptide amphiphiles (NBD-PA) composed of a fluorescent NBD probe and a peptide derivative VVAADD with a C12-alkyl-chain as the linker (NBD-C12-VVAADD). The self-assembly of NBD-PA formed beta-sheet structures at neutral pH in aqueous solution, contributed to an â?0-fold increase in the fluorescence and quantum yield of NBD mols., and conferred a supramol. hydrogel with excellent viscoelastic properties, while gel-to-sol transition of NBD-PA occurred rapidly when the pH value was adjusted to strongly alk. (e.g. pH 11). Through the pH-responsive self-assembly behavior, we further explored the relation between fluorescence of NBD-PA and pH values. Interestingly, the fluorescence of the NBD-PA system exhibited an excellent sigmoidal function relation (R2 = 0.9999) with the alk. pH values, which enabled accurate pH measurement regardless of salt types and ionic strength of solvents. Furthermore, the fluorescence of NBD-PA was fully reversible upon cycles of pH shifts, with the chem. structure of NBD-PA well-maintained throughout the process. These features of NBD-PA would facilitate the design of in situ pH detection systems as well as pH-responsive actuators for various applications in future.
Organic & Biomolecular Chemistry published new progress about 42074-68-0. 42074-68-0 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Benzyl chloride,Benzene, name is 2-Chlorotrityl chloride, and the molecular formula is C19H14Cl2, Quality Control of 42074-68-0.
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