کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1264218 1496824 2016 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Side-group engineering: The influence of norbornadienyl substituents on the properties of ethynylated pentacene and tetraazapentacene
ترجمه فارسی عنوان
مهندسی جانبی گروه: تأثیر جایگزین های نوربوردن دینیل بر خواص پنتاآن اتینیل شده و تترازاپنتازن
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی (عمومی)
چکیده انگلیسی


• Introduction of a norbornadienyl substituent in TIPS-PEN and TIPS-TAP.
• Crystal packing, optical, electronic and morphological properties are investigated.
• Improved charge transport for Nor-PEN correlates with increased transfer integrals.
• Nor-TAP exhibits a decreased performance due to smaller LUMO-LUMO interaction.

The chemical modifications of 6,13-bis(triisopropylsilylethynyl)pentacene (TIPS-PEN) and 6,13-bis(triisopropylsilylethynyl)-5,7,12,14-tetraazapentacene (TIPS-TAP) by introduction of a large norbornadienyl substituent at the silyl atom of the side chain were examined and their effect on the charge transport properties in organic field-effect transistors (OFETs) was investigated. While the introduction of the norbornadienyl substituent resulted in only small changes in the crystallographic packing of these materials and did not affect the optical and electronic properties, the effect on the charge carrier mobility is significant. The hole mobility for the norbornadienyl substituted pentacene (Nor-PEN) is increased compared to similarly prepared TIPS-PEN devices, reaching up to 0.75 cm2/Vs. On the other hand, the electron mobility of the tetraaza derivative (Nor-TAP) is reduced by an order of magnitude compared to its parent TIPS-TAP. The strong effect of the norbornadienyl substitution on the charge carrier mobilities can be explained by the calculation of the transfer integrals and the microstructure of the resulting films of the Nor-derivatives.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Organic Electronics - Volume 33, June 2016, Pages 102–109
نویسندگان
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