Pregled bibliografske jedinice broj: 267855
Thermal Polymerization of Diphenylbutadiyne and Dehydrobenzoannulenes
Thermal Polymerization of Diphenylbutadiyne and Dehydrobenzoannulenes // 1st Eropean Chemistry Congress Abstract Book / Naray-Szabo, Gabor ; Lehn, Jean-Marie (ur.).
Budimpešta: EuCheMS, 2006. (poster, međunarodna recenzija, sažetak, znanstveni)
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Naslov
Thermal Polymerization of Diphenylbutadiyne and Dehydrobenzoannulenes
Autori
Zimmermann, Boris ; Baranović, Goran
Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni
Izvornik
1st Eropean Chemistry Congress Abstract Book
/ Naray-Szabo, Gabor ; Lehn, Jean-Marie - Budimpešta : EuCheMS, 2006
Skup
1st Eropean Chemistry Congress
Mjesto i datum
Budimpešta, Mađarska, 27.08.2006. - 31.08.2006
Vrsta sudjelovanja
Poster
Vrsta recenzije
Međunarodna recenzija
Ključne riječi
Phenyldiacetylenes; Infrared; Thermal polymerization
Sažetak
Diphenylbutadiyne 1, octadehydrodibenzo[12]annulenes 2 and dodecadehydrotribenzo[18]annulenes 3 can be used as models for predicting thermal stability of theoretical phenyldiacetylenic all-carbon networks. Regarding their highly conjugated structure these compounds have intensively been studied as promising candidates for innovative electronic and photonic materials. On the grounds of vibrational assignment of mentioned compounds [1-3], significant features in temperature dependent FTIR spectra of these systems allow more detailed investigation of temperature induced inter- and intramolecular interactions. The obtained FTIR measurements were also studied by two-dimensional infrared (2D-IR) correlation spectroscopy in order to simplify visualization and simultaneously highlight characteristics in infrared spectra. In addition to 2D correlation analysis, infrared measurements were also used for temperature-derivative spectroscopy (TDS). Activation energy of reaction of annulenes 2 was determined by using the TDS procedure and theoretical model for TDS line shape. Thermal polymerization of 1 is of intermolecular nature resulting in linear polymers of polyacenic and 1, 2-addition structure [3]. On the other hand, polymerization of macrocycles 2 and 3, with bulky substituents that inhibit intermolecular polymerization, is governed by intramolecular cycloaromatization reactions. Results suggest that various pentacyclic and heptacyclic polyaromatic structures are present in the bulk material.
Izvorni jezik
Engleski
Znanstvena područja
Kemija
