Octaethyl-porphine platinum

Table 1. Common materials used in quenched-fluorescence oxygen sensing (Ru(dpp)3(C104)2 tris(diphenylphenantroline) ruthenium(II) perchlorate PtOEPK platinum(II)-octaethyl-porphine-ketone PtPFPP platinum(II)-tetrakis(pentafluorophenyl)porphine PS.poly(styrene), PSu poly(sulfone) PSB poly(styrene-butadiene) block co-polymer PVC polyvinylchloride) APET amorphous poly(ethyleneterephthalate) PE poly(ethylene).

Figure 183 Lifetime (open circles) and EPH quantum efficiency (triangles) of the phosphorescent dye 2,3,7,8,12,13,17,18-octaethyl-21H, 23H-porphine platinum (II) (PtOEP) embedded in an Alq3 matrix as a function of current density. Two filled circles are the lifetimes of the phosphorescence taken at increasing photoexcitation pulse (left 160nJ/cm2 right 16pJ/cm2). The data adapted from Ref. 493a by Kalinowski et al. [304] Copyright 2002 American Physical Society, with permission.

Baldo and coworkers [22, 23] were the first to use the red-emitting dye 2,3,7,8,12,13,17,18-octaethyl-21H,23H-porphine platinum (PtOEP, see Fig. 11.2) in an OLED. The absorption of this compound consists of a Soret band (at ca. 

Baldo et al. [ 164] used the platinum complex of 2,3,7,8,12,13,17,18-octaethyl-21 //,23//-porphine (PtOEP, 66) as efficient phosphorescent material. This complex absorbs at 530 nm and exhibits weak fluorescence at 580 nm but strong phosphorescence from the triplet state at 650 nm. Triplet transfer from a host like Alq3 was assumed to follow the Dexter mechanism. Dexter-type excitation transfer is a short-range process involving the exchange of electrons. In contrast to Forster transfer, triplet exciton transfer is allowed. 

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