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Science 20 December 2002:
Vol. 298. no. 5602, pp. 2366 - 2369
DOI: 10.1126/science.1078663
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Reports

Microporous and Photoluminescent Chalcogenide Zeolite Analogs

Nanfeng Zheng,1 Xianhui Bu,2 Bing Wang,1 Pingyun Feng1*

Crystalline semiconducting sulfide and selenide zeolite analogs were synthesized that possess four-connected, three-dimensional tetrahedral networks built from tetravalent (M4+ = Ge4+ or Sn4+, where M = meta) and trivalent (M3+ = Ga3+ or In3+) cations. Microporous materials were obtained in all four combinations of M4+ and M3+, and some of them were thermally stable up to at least 380°C. These materials exhibit framework topologies with pore size ranging from 12 to 24 tetrahedral atoms, high surface area, high framework charge density and ion exchange capacity, and tunable electronic and optical properties.

1 Department of Chemistry, University of California, Riverside, CA 92521, USA.
2 Department of Chemistry, University of California, Santa Barbara, CA 93106, USA.
*   To whom correspondence should be addressed. E-mail: pingyun.feng{at}ucr.edu

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THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
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Science. ISSN 0036-8075 (print), 1095-9203 (online)