Showing papers by "Yang Yang published in 1999"
TL;DR: In this paper, Anderson et al. presented a molecular design of Electrode Surface, Techniques of Chemistry, Vol. 5, No. 2, p. 1, this paper.
Abstract: 734 O WILEY-VCH Verlag GmbH, D-69469 Weinheim, 1999 0935-9648/99/0906-0734 $ 17.50+.50/0 Adv. Mater. 1999, 11, No. 9 [16] 1996 Annual Book of ASTM Standards, ASTM, Philadelphia, PA 1996, Vol. 2.05, B571, Vol. 6.01, D3359. [17] C. A. Goss, J. C. Brumfield, E. A. Irene, R. W. Murray, Langmuir 1992, 8, 1459. [18] R. W. Murray, in Molecular Design of Electrode Surface, Techniques of Chemistry, Vol. 22, Wiley, New York 1992, p. 1. [19] P. E. Smolenyak, E. J. Osburn, S.-Y. Chen, L.-K. Chau, D. F. OBrian, N. R. Armstrong, Langmuir 1997, 13, 6568. [20] G. Inzelt, in Electroanalytical Chemistry, A Series of Advances (Eds: A. J. Bard, I. Rubenstein), Marcel Dekker, New York 1994, Vol. 18, p. 90. [21] J. Anderson, J.-P. Dodelet, S. Barlow, S. Thayumanuvan, S. Marder, N. R. Armstrong, unpublished. [22] T. Shida, Electronic Absorption Spectra of Radical Ions, Elsevier, New York 1988, p. 211. [23] M. Redecker, H. Bassler, H. H. Horhold J. Phys. Chem. 1997, 101, 7398. [24] J. E. Malinsky, W. Li, H. Chou, W. Ma, L. Geng, T. J. Marks, G. Jabbour, S. Shaheen, B. Kippelen, N. Peyghambarian, P. Dutta, A. J. Richter, N. R. Armstrong, P. A. Lee, J. D. Anderson, SPIE 1998, 3281, 148. [25] H. Antoniadis, M. R. Hueschen, J. McElvain, J. N. Miller, R. L. Moon, D. B. Roitman, J. R. Sheats, Polym. Prepr. 1997, 38, 382.
241 citations
TL;DR: In this article, the authors demonstrate the generation of luminescence from polymer solutions in a compact polymer solution configuration, which is called a conjugated polymer electroluminescent device (SLED).
Abstract: Traditional conjugated polymer electroluminescent devices are thin-film solid-state devices consisting of a thin polymer film sandwiched between two electrodes. In this letter, we demonstrate the generation of luminescence from polymer solutions in a compact polymer solution configuration. This unique polymer solution light-emitting device (SLED) consists of a thin layer of a polymer solution sandwiched between two transparent indium–tin–oxide/glass substrates. When biased, the device turns on at slightly above the band-gap energy and emits bright luminescence. The emission spectrum is consistent with the photoluminescence spectrum obtained from the polymer solution. We suggest that the mechanism of the SLED is due to the electrogenerated chemiluminescence effect. The SLED combines the advantages of low operating voltage, and easy and low-cost fabrication. The SLED is also a highly transparent emissive device when transparent materials are used for the electrodes and the substrates.
47 citations
TL;DR: In this article, a polymer gel light-emitting device (GLED) was demonstrated. But the authors only used a single cell configuration and the emission spectrum was consistent with the photoluminescence spectrum obtained from the polymer gel.
Abstract: Polymers can be processed into several forms such as solid films, solutions, and gels. Traditional conjugated polymer electroluminescent devices are thin film, solid-state devices consisting of a thin polymer film sandwiched between two electrodes. Recently, a light-emitting device based on polymer solutions has been demonstrated. In this letter, we report the generation of luminescence from a polymer gel in a compact cell configuration. This unique polymer gel light-emitting device (GLED) consists of a thin layer of a polymer gel sandwiched between two electrode/glass substrates. The emission spectrum is consistent with the photoluminescence spectrum obtained from the polymer gel. The device shows an operating mechanism similar to the electrogenerated chemiluminescence.
31 citations
TL;DR: In this paper, the apparent activation energy of Ordinary Portland Cement (OPC) hydration measured by the microwave method is in good agreement (5% difference) with that obtained by the conventional calorimetric method.
Abstract: The apparent activation energy of cement hydration is normally measured using the time-consuming calorimetric method. In this work, a new, quick method of estimating the apparent activation energy of cement hydration using a microwave technique is proposed. The result of the apparent activation energy of the Ordinary Portland Cement (OPC) hydration measured by the microwave method is in good agreement (5% difference) with that obtained by the conventional calorimetric method, indicating that the microwave method can be used as an alternative in the estimation of apparent activation energy of the OPC hydration. The good agreement between the results measured by microwave method and calorimetric method further helps to establish the validity of microwave measurement as a new technique for studying cement hydration proposed in our previous work.
6 citations
24 Sep 1999
TL;DR: The performance of MEH-PPV based light emitting diodes is strongly affected by the morphology of spin-coated polymer films, which can be controlled by varying the solvent and concentration of the polymer solution as well as the spin speed as discussed by the authors.
Abstract: The performance of MEH-PPV based light emitting diodes is strongly affected by the morphology of spin-coated polymer films, which can be controlled by varying the solvent and concentration of the polymer solution as well as the spin-speed.
4 citations
16 Sep 1999
1 citations