دورية أكاديمية
Nanoscale architectures for molecular electronics: Vibrational spectroscopy and structure of solid hexa-n-dodecyl-hexa-peri-hexabenzocoronene.
| العنوان: | Nanoscale architectures for molecular electronics: Vibrational spectroscopy and structure of solid hexa-n-dodecyl-hexa-peri-hexabenzocoronene. |
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| المؤلفون: | Carminati, Marta, Brambilla, Luigi, Zerbi, Giuseppe, Muellen, Klaus, Wu, Jishan |
| المصدر: | Journal of Chemical Physics; 10/8/2005, Vol. 123 Issue 14, p144706, 13p, 7 Diagrams, 1 Chart, 17 Graphs |
| مصطلحات موضوعية: | MOLECULAR electronics, MICROELECTRONICS, SPECTRUM analysis, PHASE transitions, PHASE equilibrium, STATISTICAL physics |
| مستخلص: | The solid columnar discotic and liquid-crystalline phases formed by hexa-n-dodecyl-hexa-peri-hexabenzocoronene (HBC-C12) have been investigated by IR and Raman vibrational spectroscopies. IR spectra clearly show the two phase transitions at 42 and at 107 °C already reported in literature and allow us to understand the conformational modifications of the n-alkyl chains that take place through the transitions. Thanks to the collected data, we propose a model of the structure of HBC-C12 in the solid-crystalline phase below 42 °C which includes the structure of the alkyl chains. This model is also confirmed by dichroic infrared microscopy measurements on highly oriented samples. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: | Complementary Index |
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