Download Volume 20, Advances in Photochemistry by Douglas C. Neckers, David H. Volman, G?nther von B?nau PDF
By Douglas C. Neckers, David H. Volman, G?nther von B?nau
Greater than an easy survey of the present literature, Advances in Photochemistry bargains serious reviews written via across the world well-known specialists. those pioneering scientists provide distinct and sundry issues of view of the present facts. Their articles are not easy in addition to provocative and are meant to stimulate dialogue, advertise additional learn, and inspire new advancements within the box.
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Extra info for Volume 20, Advances in Photochemistry
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2–4) Fluorescence after excitation of only Pyþ: (2) after 5-min exchange with Pyþ, (3) after 2 h exchange with Pyþ, (4) after additional 2 h exchange with Oxþ. (5) The same as 4 but after specific excitation of only Oxþ. ) 20 SUPRAMOLECULARLY ORGANIZED LUMINESCENT DYE MOLECULES OF ZEOLITE L 2–4 were excited with light of 470–490 nm where only Pyþ absorbs. In 2, we see how Pyþ penetrates the cylinder from both sides in the direction of the cylinder axis. After an exchange of 5 min under reflux the crystal ends show the typical green fluorescence of Pyþ, while the section in the middle remains dark.
Franke, A. Sobbi, G. Schulz-Ekloff, and D. Wo¨hrle, J. Phys. Chem. 1994, 98, 47. 18. R. Hoppe, G. Schulz-Ekloff, D. Wo¨hrle, C. Kirschhock, and H. Fuess, in Zeolites and Related Microporous Materials: State of the Art 1994. Studies in Surface Science and Catalysis, J. Weitkamp, H. G. Karge, H. Pfeifer, W. , Elsevier, Amsterdam, 1994, Vol. 84, pp. 821–827. 19. J. Caro, F. Marlow, and M. Wu¨bbenhorst, Adv. Mater. 1994, 6, 413. 20. D. Wo¨hrle and G. Schulz-Ekloff, Adv. Mater. 1994, 6, 875. 21. V. Ramamurthy, D.
Right: Front view of a few individual dye-filled channels. The polarization of absorbed and emitted light is indicated. 18 SUPRAMOLECULARLY ORGANIZED LUMINESCENT DYE MOLECULES OF ZEOLITE L The exciting light was not polarized. Obviously, the material is optically very ˚ and therefore anisotropic. 8. Other molecules for which we found the same behavior are POPOP, DMPOPOP, DPH, and MBOXE. 11 where on the right some individual channels are depicted. Surprisingly, case 4 was observed for Oxþ loaded zeolite L.