Perylen

Abram I I, Auerbaoh R A, Birge R R, Kohler B E and Stevenson J M 1975 Narrow-line fluoresoenoe speotra of perylene as a funotion of exoitation wavelength J. Chem. Phys. 63 2473-8... 

Pirotta M, Renn A, Werts M FI V and Wild U P 1996 Single molecule spectroscopy. Perylene in the Shpol skii matrix n-nonane Chem. Phys. Lett. 250 576-82... 

Other early work, which continues to this day, involved vibronic relaxation [6] of large colored molecules such as chrysene [19], pyrene [20] and perylene [21], due to the relative ease of using visible or near-UV light to pump and probe these systems (see example C3.5.6.5 below). 

Jiang Y J and B G 1994 Vibrational population relaxation of perylene in its ground and exoited eleotronio states J. Phys. Chem. 98 9417-21... 

Naphtho- (naphthalene) Perylo- (perylene) Phenanthro- (phenanthrene)... 

Two typical dye molecules. The europium complex (a) transfers absorbed light to excited-state levels of the complexed Eu , from which lasing occurs. The perylene molecule (b) converts incident radiation into a triplet state, which decays slowly and so allows lasing to occur. 

Decomposition of diphenoylperoxide [6109-04-2] (40) in the presence of a fluorescer such as perylene in methylene chloride at 24°C produces chemiluminescence matching the fluorescence spectmm of the fluorescer with perylene was reported to be 10 5% (135). The reaction follows pseudo-first-order kinetics with the observed rate constant increasing with fluorescer concentration according to = k [flr]. Thus the fluorescer acts as a catalyst for peroxide decomposition, with catalytic decomposition competing with spontaneous thermal decomposition. An electron-transfer mechanism has been proposed (135). 

Hydrogen peroxide has also been analy2ed by its chemiluminescent reaction with bis(2,4,6-trichlorophenyl) oxalate and perylene in a buffered (pH 4—10) aqueous ethyl acetate—methanol solution (284). Using a flow system, intensity was linear from the detection limit of 7 x 10 M to at least 10 M. 

Pigment Red 179 [5521-31-3] 71130 Perylene imidation of perylene 1,6,7,12-tetra-carboxyhc acid dianhydride with methylamine... 

Perylenes. Perylene pigments are either the 3,4,9,10-tetracarboxyhc dianhydride or more often N,N -substituted diknides (Table 7). 

Perylene Pigments. The perylenes ate a class of red and maroon pigments. In the general formula, Rmay represent a simple alkyl, methyl, or a substituted phenyl, eg, PR 123, R = p-ethoxyphenyl. 

Benzanthrone Dyes. Vat dyes derived from benzanthrone may be divided into two groups violanthrones and isoviolanthrones, dyes that have the perylene ring in their molecular stmcture and benzanthrone pyrazolanthrones and benzanthrone acridones, the peri ring closure products of 3-anthra quin onyl amino-ben zanthrone. 

Fig. 6. Classes of charge-generating dyes and pigments (a) perylenes, (b) thiapyrylium, (c) phthalocyanines, (d) squaiaines, and (e) a2o. R and Z are organic...

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