Tailor-Made Highly Luminescent and Ambipolar Transporting Organic Mixed Stacked Charge-Transfer Crystals: An Isometric Donor鈥揂cceptor Approach

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• 作者：Sang Kyu Park ; Shinto Varghese ; Jong H. Kim ; Seong-Jun Yoon ; Oh Kyu Kwon ; Byeong-Kwan An ; Johannes Gierschner ; Soo Young Park
• 刊名：The Journal of the American Chemical Society
• 出版年：2013
• 出版时间：March 27, 2013
• 年：2013
• 卷：135
• 期：12
• 页码：4757-4764
• 全文大小：524K
• 年卷期：v.135,no.12(March 27, 2013)
• ISSN：1520-5126

文摘

We have rationally designed a densely packed 1:1 donor鈥揳cceptor (D鈥?b>A) cocrystal system comprising two isometric distyrylbenzene- and dicyanodistyrylbenzene-based molecules, forming regular one-dimensional mixed stacks. The crystal exhibits strongly red-shifted, bright photoluminescence originating from an intermolecular charge-transfer state. The peculiar electronic situation gives rise to high and ambipolar p-/n-type field-effect mobility up to 6.7 脳 10^鈥? and 6.7 脳 10^鈥? cm² V^鈥? s^鈥?, respectively, as observed in single-crystalline OFETs prepared via solvent vapor annealing process. The unique combination of favorable electric and optical properties arising from an appropriate design concept of isometric D鈥?b>A cocrystal has been demonstrated as a promising candidate for next generation (opto-)electronic materials.