Verfahren und Verwendung lumineszenter Verbindungen zur Messung einer photokatalytischen Oberflächenaktivität

Die Erfindung stellt ein Verfahren zur Messung der katalytischen Aktivität eines Photokatalysators mit einer lumineszierenden Indikatorverbindung bereit, die einen großen Stokes-Abstand aufweist, im Wesentlichen selbst photostabil ist und mit quasi linearer Degradationsrate von aktivem Katalysator abgebaut wird. Determining the activity of a photocatalytic active compound comprises contacting the active compound with an indicator compound, which is degradable in the presence of the active compound, under irradiation; irradiating the photocatalytic compound contacted with the indicator compound, with a radiation of a catalytic wave length activating the photocatalytic activity of the photocatalytic active compound; irradiating the indicator compound with a radiation of induction wave length inducing its emission; and detecting the radiation, where the indicator compound is a metal complex (I). Determining the activity of a photocatalytic active compound comprises contacting the photocatalytic active compound with an indicator compound, which is degradable in the presence of the photocatalytic active compound, under irradiation; irradiating the photocatalytic compound contacted with the indicator compound, with a radiation of a catalytic wave length activating the photocatalytic activity of the photocatalytic active compound; irradiating the indicator compound with a radiation of induction wave length inducing its emission; and detecting the radiation determined from the photocatalytically degradable compounds, where the indicator compound is a metal complex of formula (I). M : a rare earth metal ion; p, r : 0-3; q : 0-5; m, n, o : 1-4; E, T : a bond or 1-3 atoms of C, O, S, N or Se; X1, X2, Xm, Y1, Y2, Yn, Z1, Z2, Zo : C, O, S, N or Se; A1-A3 : neutral or negatively charged atom comprising C, O, S, N or Se; V1, W1 : C, O, S, N or Se; and U1 : 1-5 atoms of C, N, O or Se. Where: the ligands A and B1 has a charge compensating the charge of M. An independent claim is included for a device for determining the activity of a photocatalytic active compound comprising a first radiation source (4), which is arranged on a support for the absorption of photocatalytic active compound (2) contacted with the photocatalytically degradable compound (1), and a detector (5) arranged on the support, where a second radiation source (6) is arranged on the support. [Image].