A simple, fast and highly sensitive colorimetric detection of zein in aqueous ethanol via zein–pyridine–gold interactions

Abstract

Formation of gold nanoparticles in aqueous ethanol in the presence of pyridine-functionalized single-chain nanoparticles allows for the fast and highly sensitive colorimetric detection of zein corn protein.

Glass-Transition Dynamics of Mixtures of Linear Poly(vinyl methyl ether) with Single-Chain Polymer Nanoparticles: Evidence of a New Type of Nanocomposite Materials

“…For SCNP construction, intramolecular cross-linking techniques based on (i) non-covalent, (ii) covalent, and (iii) dynamic covalent bonds have been developed [17,18,19,20]. The above techniques gave rise to folded/collapsed soft nano-objects with very promising applications in different fields, including catalysis [12,21,22], sensing [12,23,24] and nanomedicine [12,25,26,27,28,29], among other applications.…”

Size of Elastic Single-Chain Nanoparticles in Solution and on Surfaces

“…[1][2][3] The self-folding process can be driven by different intramolecular interactions such as non-covalent, covalent and dynamic covalent bonds, by using well-defined precursors decorated with appropriate functional groups and experimental conditions such that inter-chain coupling events are minimized to a large extent. [4][5][6][7][8][9][10][11][12][13] The resulting SCNPs are useful soft nano-objects with potential applications in nanomedicine, [14][15][16][17] biosensing 18,19 and catalysis, [20][21][22][23] among other different fields. [24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40] Theoretical models providing a connection between both the amount of functional groups, x, and precursor molar mass, M, with the size of the resulting SCNPs are of great interest to establish useful structure-property relationships.…”

Recent bioinspired applications of single‐chain nanoparticles

“…the capability for detection of other biomacromolecules) is a promising field of research. The first report on the use of SCNPs as a colorimetric sensor of zein corn protein was by Latorre‐Sanchez and Pomposo based on pyridine‐functionalized SCNPs. In this work, the synergistic sensing capabilities of combining gold nanoparticle generation in the presence of functional SCNPs was exploited for the rapid and efficient colorimetric detection, by the naked eye, of a hydrophobic protein such as zein in a wide concentration range, covering 12–3000 µg mL −1 .…”