Xiaozhou Ji

All Publications

• Thiazole fused S,N-heteroacene step-ladder polymeric semiconductors for organic transistors. Chemical science Attar, S., Yang, R., Chen, Z., Ji, X., Comí, M., Banerjee, S., Fang, L., Liu, Y., Al-Hashimi, M. 2022; 13 (41): 12034-12044

  Abstract

  Ladder-type thiazole-fused S,N-heteroacenes with an extended π-conjugation consisting of six (SN6-Tz) and nine (SN9-Tz) fused aromatic rings have been synthesized and fully characterized. To date, the synthesis of well-defined fused building blocks and polymers of π-conjugated organic compounds based on the thiazole moiety is a considerable synthetic challenge, due to the difficulty in their synthesis. Acceptor-donor building blocks M1 and M2 were successfully polymerized into ladder homopolymers P1-P2 and further copolymerized with a diketopyrrolopyrrole unit to afford step-ladder copolymer P3. The optical, electronic, and thermal properties, in addition to their charge transport behavior in organic thin-film transistors (OTFTs), were investigated. The results showed an interesting effect on the molecular arrangement of the thiazole-based ladder-type heteroacene in the crystal structure revealing skewed π-π-stacking, and expected to possess better p-type semiconducting performance. The polymers all possess good molecular weights and excellent thermal properties. All the polymer-based OTFT devices exhibit annealing temperature dependent performance, and among the polymers P3 exhibits the highest mobility of 0.05 cm2 V-1 s-1.

  View details for DOI 10.1039/d2sc04661j

  View details for PubMedID 36349116

  View details for PubMedCentralID PMC9600222

• Thiazole fused S,N-heteroacene step-ladder polymeric semiconductors for organic transistors CHEMICAL SCIENCE Attar, S., Yang, R., Chen, Z., Ji, X., Comi, M., Banerjee, S., Fang, L., Liu, Y., Al-Hashimi, M. 2022

  View details for DOI 10.1039/d2sc04661j

  View details for Web of Science ID 000860952700001

• Molecular mechanism of rigidity- and planarity-promoted, state-dependent doping of conjugated ladder-type molecules MATERIALS CHEMISTRY FRONTIERS Lee, J., Li, S., Ji, X., Che, S., Cao, Y., Tabor, D. P., Fang, L. 2022

  View details for DOI 10.1039/d2qm00789d

  View details for Web of Science ID 000863349100001

• Tuning the Mechanical and Electric Properties of Conjugated Polymer Semiconductors: Side-Chain Design Based on Asymmetric Benzodithiophene Building Blocks ADVANCED FUNCTIONAL MATERIALS Liu, D., Lei, Y., Ji, X., Wu, Y., Lin, Y., Wang, Y., Zhang, S., Zheng, Y., Chen, Y., Lai, J., Zhong, D., Cheng, H., Chiong, J. A., Gu, X., Gam, S., Yun, Y., Tok, J., Bao, Z. 2022

  View details for DOI 10.1002/adfm.202203527

  View details for Web of Science ID 000843763400001