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Emission spectra of non-crystalline tetracene films

✍ Scribed by H. Müller; H. Bässler; G. Vaubel

Book ID
103011456
Publisher
Elsevier Science
Year
1974
Tongue
English
Weight
385 KB
Volume
29
Category
Article
ISSN
0009-2614

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✦ Synopsis

R&d manuscript received 21 June 1974

Measkments of deay time, temperature dependence and spectrum of the fluorescence emission of vacuum-deposite+ tetracene f&ns are reported. It is concluded that the emitting species is a molecular pair in sandwich con-Iiguration.

In general organic molecular crystals exhibit extimer fluorescence if .ihe crystal structure is dimeric. in-nature as in pyrene and perylene in its /3-modification' [l] . In monomeric crystals excimer emission on-Ii appears if the crystal structure is rne~hanically perturbed, e.g., by applying external pressure [2,3] . In

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Low temperature emission spectra of trap
Low temperature emission spectra of trapped tetracene pairs from ditetracene
✍ Mark A. Iannone; Gary W. Scott 📂 Article 📅 1990 🏛 Elsevier Science 🌐 English ⚖ 559 KB

Interacting pairs of tetracene molecules are prepared in a PMMA host matrix by photodecomposition of ditetracene at 15 K. Excitation and emission spectra of these pairs are red-shifted and broadened relative to those of isolated tetracene molecules under the same conditions. No differences are seen