Surface Chemistry
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- Simon R. Bare 2 &
- G. A. Somorjai 2
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This paper reviews classical and modern surface chemistry and discusses the concepts and principles that are unique to two dimensional surfaces. The structure, the composition and the dynamics of atoms and molecules on surfaces are discussed. This is followed by a review of the electronic properties of surfaces. The adsorption of gas atoms and molecules on surfaces and their unique chemical bonding is reviewed. Surface reactions, especially those that are catalytic, are also reviewed.
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Materials and Molecular Research Division Lawrence Berkeley Laboratory and Department of Chemistry, University of California, 94720, Berkeley, CA, USA
Simon R. Bare & G. A. Somorjai
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Department of Chemical Engineering of Processes and Materials, Engineering Faculty, University of Palermo, Palermo, Italy
Mario Schiavello
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Bare, S.R., Somorjai, G.A. (1988). Surface Chemistry. In: Schiavello, M. (eds) Photocatalysis and Environment. NATO ASI Series, vol 237. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-3015-5_3
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Journal of Materials Chemistry C
Low temperature uv cross-linked fluorinated polyurethane for organic thin film transistors †.
* Corresponding authors
a School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China E-mail: [email protected] , [email protected]
b Henan Key Laboratory of Advanced Nylon Materials and Application, Zhengzhou University, Zhengzhou, China
Organic thin film transistors (OTFTs) have attracted extensive research interest in recent years because of their light weight, low cost, and large area preparation at low temperatures, especially organic thin film transistors based on high dielectric constant ( κ ) organic dielectric materials with a flat surface prepared by a low-temperature solution method. Here, a UV cross-linked fluorine-containing polyurethane (PU) dielectric layer quickly curing in only 5 min at room temperature was designed and prepared by adding different contents of hexafluorobutyl acrylate through a thiolene click reaction. The spin-coated films were flat and possessed superior solvent resistance, thermal stability, and dielectric qualities. The C8-BTBT based OTFTs prepared with fluorinated PU (FPU) as the dielectric layer exhibited excellent electrical properties, with the highest mobility of 3.53 cm 2 V −1 s −1 , a switching ratio of 2.8 × 10 6 , the least subthreshold swing of 0.4 V dec −1 , a low threshold voltage of −0.3 V, and almost no hysteresis. The results show that the comprehensive performance of FPU is obviously better than that of pure PU, so polymer fluorination is an effective method to optimize the dielectric constant and device performance. These UV cross-linked FPU dielectric materials can be applied in many applications such as flexible electronic devices in the future.
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Low temperature UV cross-linked fluorinated polyurethane for organic thin film transistors
R. Duan, S. Liu, X. Liu, M. Huang, S. He, H. Liu, W. Liu and C. Zhu, J. Mater. Chem. C , 2024, Advance Article , DOI: 10.1039/D4TC00295D
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