Fast thermal evaporation in purification of 1,4-Di(pyren-1-ly)benzene

Chung Yi Hsu, Hung Yin Lin, Xuan You Yan, Tsung Syun Huang, Yan Kuin Su, Thou-Jen Whang

Research output: Contribution to journalArticle

3 Citations (Scopus)


This work presents a fast purification system that involves a vertical quartz tube and vacuum sublimation for separation without dilution. This system produced re-crystallized 1,4-di(pyren-1-yl)benzene (DPB) in a few hours following the synthesis of pyrene derivatives with a mole yield ratio of 1,4-di(pyrene-1-yl)benzene to 1-phenylpyrene (1PP) of 5:1. Differential scanning calorimetry (DSC) and X-ray diffractometry (XRD) were utilized to identify the products. Finally, the lifetimes of pyrene derivatives DPB and 1PP were determined by exponential regression to be 10.0 ± 0.14 and 3.3 ± 0.15 ns, respectively. From the lifetime measurements, the purity of the photo-responsive materials could be easily determined. To prevent red-shift of electro-luminescence (EL) spectra by the energy transfer mechanism, it has acquired to elect transfer layers for pure electroluminescence. Aco-catalytic reaction reduced the amount of impurities and eliminated the need for the use of a solvent in the purification step.

Original languageEnglish
Pages (from-to)289-296
Number of pages8
JournalJournal of the Chinese Chemical Society
Issue number3
Publication statusPublished - 2012 Mar 1

All Science Journal Classification (ASJC) codes

  • Chemistry(all)

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