Lock-Arm Supramolecular Ordering: A Molecular Construction Set for Cocrystallizing Organic Charge Transfer Complexes
详细信息 查看全文
- 作者：Anthea K. Blackburn ; Andrew C.-H. Sue ; Alexander K. Shveyd ; Dennis Cao ; Alok Tayi ; Ashwin Narayanan ; Brian S. Rolczynski ; Jodi M. Szarko ; Ozgur A. Bozdemir ; Rie Wakabayashi ; Jessica A. Lehrman ; Bart Kahr ; Lin X. Chen ; Majed S. Nassar ; Samuel I. Stupp ; J. Fraser Stoddart
- 刊名：Journal of the American Chemical Society
- 出版年：2014
- 出版时间：December 10, 2014
- 年：2014
- 卷：136
- 期：49
- 页码：17224-17235
- 全文大小：794K
- ISSN：1520-5126
文摘
Organic charge transfer cocrystals are inexpensive, modular, and solution-processable materials that are able, in some instances, to exhibit properties such as optical nonlinearity, (semi)conductivity, ferroelectricity, and magnetism. Although the properties of these cocrystals have been investigated for decades, the principal challenge that researchers face currently is to devise an efficient approach which allows for the growth of high-quality crystalline materials, in anticipation of a host of different technological applications. The research reported here introduces an innovative design, termed LASO鈥攍ock-arm supramolecular ordering鈥攊n the form of a modular approach for the development of responsive organic cocrystals. The strategy relies on the use of aromatic electronic donor and acceptor building blocks, carrying complementary rigid and flexible arms, capable of forming hydrogen bonds to amplify the cocrystallization processes. The cooperativity of charge transfer and hydrogen-bonding interactions between the building blocks leads to binary cocrystals that have alternating donors and acceptors extending in one and two dimensions sustained by an intricate network of hydrogen bonds. A variety of air-stable, mechanically robust, centimeter-long, organic charge transfer cocrystals have been grown by liquid鈥搇iquid diffusion under ambient conditions inside 72 h. These cocrystals are of considerable interest because of their remarkable size and stability and the promise they hold when it comes to fabricating the next generation of innovative electronic and photonic devices.