Very Recently, polymeric memory materials have achieved dramatic attention since the first reported by Sliva et al.1 in 1970. Compared with conventional inorganic memory materials, polymeric materials have advantages in the ease of miniaturization and tailorable energy levels through structural modification. Moreover, polymeric memory materials store information in the form of high (ON) and low (OFF) current states in place of the amount of charges stored in memory devices and possess the advantages of low-cost, solution processability, flexibility, and three-dimensional stacking capability for practical applications.2 In this contribution, a series of 2D donor-donor and donor-acceptor conjugated polymers consist of benzo[1,2-b:4,5-b']dithiophene as common building blocks in the main chain with different side groups were synthesized3 and used for memory device application. Performance of these memory devices reveals strong correlation between on-off ratio and energetics (differences between HOMO and LUMOs energy levels). Combined theoretical and experimental studies of our donor-acceptor and donor-donor conjugated systems offer valuable insights to improve memory devices by rational design of molecular structures. Our results suggest the feasibility of tailoring the memory device properties through control synthesis of conjugated polymers with backbone and side chains allowing fine-tuning the energetics and degree of conjugation.Reference: 1. Sliva, P. O.; Dir, G.; Griffiths, C. J. Non-Cryst. Solids 1970,  2, 316�333.2. Stikeman A. Technol. Rev. 2002 , 105, 31.3. Kuo, C. Y.; Nie, W.; Tsai, H.; Yen, H. J.; Mohite,A. D.; Gupta,  G.; Dattelbaum, A. M.; William, D. J.; Cha, K. C.; Yang, Y.; Wang, L.; Wang, H. L. Macromolecules 2014 , 47, 1008-1020.

Flexible nonvolatile polymer memory devices derived from donor-donor and donor-acceptor conjugated polymers

248th National Meeting (2014)

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