Molecular size-selective vessel: Spherical nano-net

Young Woong Suh, Mayfair C. Kung, Y. M. Wang, Harold H Kung

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A molecular-size cavity that possesses a functionalized interior, where chemical storage or transformation occurs is an essential component in many natural systems, such as an enzyme or a mineral zeolite. A cavity of this type, with a tunable size, enclosed by a porous, net-like shell of one- to two-atom layer thick and accessible by different molecules will have many potential applications such as reservoir for metal ions and molecules for targeted delivery, and as vessel for size-selective chemical and catalytic reactions. We describe a strategy to synthesize such a nano-net structure and demonstrate it with the synthesis of a 2 nm siloxane net with interior amine groups. The structure exhibits molecular size-selectivity, which is demonstrated using different-size chromophores such as ninhydrin and Zn porphyrin that are well-known probes to bind amine groups. The siloxane nano-net is also endowed with an ability to coordinate metal ions in the interior of the cavity. This feature is confirmed using exposure of nano-net to an aqueous Mo- or W-staining solution, followed by high resolution electron microscopy and energy dispersive X-ray analysis. The amine groups are chemically active, which is illustrated with the amine-catalyzed decomposition of acetoacetic acid to acetone and CO2, and their catalytical properties are altered by the nano-net environment. The method can be readily adapted to nano-nets of different dimensions and for different interior functional groups.

Original languageEnglish
Title of host publicationAIChE Annual Meeting, Conference Proceedings
Pages4315
Number of pages1
Publication statusPublished - 2005
Event05AIChE: 2005 AIChE Annual Meeting and Fall Showcase - Cincinnati, OH, United States
Duration: Oct 30 2005Nov 4 2005

Other

Other05AIChE: 2005 AIChE Annual Meeting and Fall Showcase
CountryUnited States
CityCincinnati, OH
Period10/30/0511/4/05

Fingerprint

Amines
Metal ions
Molecules
Energy dispersive X ray analysis
High resolution electron microscopy
Porphyrins
Chromophores
Acetone
Functional groups
Molecular structure
Minerals
Enzymes
Decomposition
Atoms
Acids

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Suh, Y. W., Kung, M. C., Wang, Y. M., & Kung, H. H. (2005). Molecular size-selective vessel: Spherical nano-net. In AIChE Annual Meeting, Conference Proceedings (pp. 4315)

Molecular size-selective vessel : Spherical nano-net. / Suh, Young Woong; Kung, Mayfair C.; Wang, Y. M.; Kung, Harold H.

AIChE Annual Meeting, Conference Proceedings. 2005. p. 4315.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Suh, YW, Kung, MC, Wang, YM & Kung, HH 2005, Molecular size-selective vessel: Spherical nano-net. in AIChE Annual Meeting, Conference Proceedings. pp. 4315, 05AIChE: 2005 AIChE Annual Meeting and Fall Showcase, Cincinnati, OH, United States, 10/30/05.
Suh YW, Kung MC, Wang YM, Kung HH. Molecular size-selective vessel: Spherical nano-net. In AIChE Annual Meeting, Conference Proceedings. 2005. p. 4315
Suh, Young Woong ; Kung, Mayfair C. ; Wang, Y. M. ; Kung, Harold H. / Molecular size-selective vessel : Spherical nano-net. AIChE Annual Meeting, Conference Proceedings. 2005. pp. 4315
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