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Thangavel A, Elder IA, Sotiriou-Leventis C, Dawes R, Leventis N. Breaking Aggregation and Driving the Keto-to-gem-Diol Equilibrium of the N,N′-Dimethyl-2,6-diaza-9,10-anthraquinonediium Dication to the Keto Form by Intercalation in Cucurbit[7]uril. J Org Chem 2013; 78:8297-304. [DOI: 10.1021/jo3027577] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Arumugam Thangavel
- Department of Chemistry, Missouri University of Science and Technology, Rolla, Missouri 65409, United
States
| | - Ian A. Elder
- Department of Chemistry, Missouri University of Science and Technology, Rolla, Missouri 65409, United
States
| | - Chariklia Sotiriou-Leventis
- Department of Chemistry, Missouri University of Science and Technology, Rolla, Missouri 65409, United
States
| | - Richard Dawes
- Department of Chemistry, Missouri University of Science and Technology, Rolla, Missouri 65409, United
States
| | - Nicholas Leventis
- Department of Chemistry, Missouri University of Science and Technology, Rolla, Missouri 65409, United
States
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Chuang CJ, Lai CC, Liu YH, Peng SM, Chiu SH. A Two-Stage Molecular Retractable Cable Featuring Push-Button and Rotary Two-Way Switching Modes. Chemistry 2012; 18:16698-707. [DOI: 10.1002/chem.201202820] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2012] [Revised: 09/25/2012] [Indexed: 11/06/2022]
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You YC, Tzeng MC, Lai CC, Chiu SH. Using Oppositely Charged Ions To Operate a Three-Station [2]Rotaxane in Two Different Switching Modes. Org Lett 2012; 14:1046-9. [DOI: 10.1021/ol203401d] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ya-Ching You
- Department of Chemistry and Center for Emerging Material and Advanced Devices, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei, Taiwan, 10617, R.O.C., and Institute of Molecular Biology, National Chung Hsing University and Department of Medical Genetics, China Medical University Hospital, Taichung, Taiwan, R.O.C
| | - Mei-Chun Tzeng
- Department of Chemistry and Center for Emerging Material and Advanced Devices, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei, Taiwan, 10617, R.O.C., and Institute of Molecular Biology, National Chung Hsing University and Department of Medical Genetics, China Medical University Hospital, Taichung, Taiwan, R.O.C
| | - Chien-Chen Lai
- Department of Chemistry and Center for Emerging Material and Advanced Devices, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei, Taiwan, 10617, R.O.C., and Institute of Molecular Biology, National Chung Hsing University and Department of Medical Genetics, China Medical University Hospital, Taichung, Taiwan, R.O.C
| | - Sheng-Hsien Chiu
- Department of Chemistry and Center for Emerging Material and Advanced Devices, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei, Taiwan, 10617, R.O.C., and Institute of Molecular Biology, National Chung Hsing University and Department of Medical Genetics, China Medical University Hospital, Taichung, Taiwan, R.O.C
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Chen NC, Chuang CJ, Wang LY, Lai CC, Chiu SH. Weakly Associated TFPB Anions Are Superior to PF6 Anions When Preparing (Pseudo)Rotaxanes from Crown Ethers and Secondary Dialkylammonium Ions. Chemistry 2012; 18:1896-900. [DOI: 10.1002/chem.201103464] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2011] [Indexed: 11/06/2022]
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Samanta SK, Samanta D, Bats JW, Schmittel M. DABCO as a dynamic hinge between cofacial porphyrin panels and its tumbling inside a supramolecular cavity. J Org Chem 2011; 76:7466-73. [PMID: 21863790 DOI: 10.1021/jo201252q] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
The heteroleptic supramolecular double-decker porphyrin 1 was synthesized with DABCO as a guest between two cofacial porphyrin units as characterized by (1)H NMR and ESI-MS. While DABCO is not seen to tumble inside the cavity, even at higher temperatures (80 °C), such motion was triggered upon addition of various coordinating ligands (quinuclidine, 4-bromopyridine, or excess of DABCO). Different stoichiometric amounts were needed depending on the n donor quality of the added ligands to initiate tumbling of the "inside" DABCO. As demonstrated in an example with excess DABCO, the tumbling was stopped by lowering the temperature to -50 °C.
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Affiliation(s)
- Soumen K Samanta
- Center for Micro- and Nanochemistry and Engineering, Organische Chemie I, Adolf-Reichwein Strasse, Universität Siegen, D-57068 Siegen, Germany
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