Detection of formaldehyde (HCHO) in solution based on the autocatalytic oxidation reaction of o-phenylenediamine (OPD) induced by silver ions (Ag+)

Highly Sensitive Measurement of Horseradish Peroxidase Using Surface-Enhanced Raman Scattering of 2,3-Diaminophenazine

“…At a lower oPD concentration (0.1 mM), a noticeable fraction of oPD is oxidized; thus, the relative spectrum of oxidized oPD becomes stronger. It is known that both ions of silver (I) [ 66 , 67 ] and silver nanoparticles [ 68 , 69 ] facilitate the oxidation of oPD to DAP. However, the band positions of set B have very little in common with the SERS spectrum of neutral or protonated DAP ( Figure A8 ).…”

“…It is known that both ions of silver (I) [ 66 , 67 ] and silver nanoparticles [ 68 , 69 ] facilitate the oxidation of oPD to DAP. However, the band positions of set B have very little in common with the SERS spectrum of neutral or protonated DAP ( Figure A8 ).…”

Fluorinated 2,3-diaminophenazines: synthesis, mechanism of formation, and properties

“…19 Methods that use the remarkable luminescence of DAPs for analytical and biochemical applications have been intensively studied. [20][21][22][23][24][25][26][27][28][29][30][31] As fragments of complex molecules, DAPs are being studied as fluorescent sensors for the long-term monitoring Fig. 1 DAP and its derivatives with antiproliferative activities against the A549 and HCT116 cell lines.…”

“…Methods that use the remarkable luminescence of DAPs for analytical and biochemical applications have been intensively studied. 20–31 As fragments of complex molecules, DAPs are being studied as fluorescent sensors for the long-term monitoring of physiological processes associated with various metabolic diseases and cancer. 32,33 Screening for new potent, selective and less toxic compounds to inhibit PKs has been proved to be a promising cancer treatment strategy.…”