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Volumn 43, Issue 46, 2004, Pages 6308-6311

Dipeptides as microporous materials

Author keywords

Chirality; Inclusion compounds; Microporosity; Peptides; Zeolites

Indexed keywords

HYDROGEN BONDS; MICROPOROUS MATERIALS; MOLECULAR STRUCTURE; SORPTION;

EID: 11144241037     PISSN: 14337851     EISSN: None     Source Type: Journal    
DOI: 10.1002/anie.200460952     Document Type: Article
Times cited : (142)

References (59)
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    • n) E. B. Rusanov, V. V. Ponomareva, V. V. Komarchuk, H. Stoeckli-Evans, E. Fernandez-Ibañez, F. Stoeckli, J. Sieler, K. V. Domasevitch, Angew. Chem. 2003, 115, 2603-2605; Angew. Chem. Int. Ed. 2003, 42, 2499-2501;
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    • (Eds.: J. L. Atwood, J. E. D. Davies, D. D. MacNicol), Academic Press, London
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    • Barrer, R.M.1
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    • in Japanese
    • a) K. Ogura, Yukagaku 1994, 43, 779-786 (in Japanese);
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  • 33
    • 11144317042 scopus 로고    scopus 로고
    • note
    • Crystallizations of AV and VA were performed from distilled water without using a template. Crystals suitable for single-crystal XRD analyses were obtained by evaporation of 0.3 M solutions at 60°C. PXRD analyses indicated a total correspondence between the bulk products and the samples studied. The same single-crystal phase for each dipeptide, as confirmed by PXRD, was observed for the as-received samples (Sigma and ICN), solid products of fast crystallizations (evaporation in seconds at RT; evaporation over 2 h at 60°C), very slow crystallizations (evaporation over 2 months at RT), and for crystals exhaustively equilibrated with their supernatant aqueous solutions (8 months at RT).
  • 34
    • 11144265965 scopus 로고    scopus 로고
    • note
    • 2. CCDC-238397 (AV) and CCDC 238398 (VA) contain the supplementary crystallographic data for this paper. These data can be obtained free of charge via www.ccdc.cam.ac.uk/conts/retrieving.html (or from the Cambridge Crystallographic Data Centre, 12 Union Road, Cambridge CB21EZ, UK; fax: (+44)1223-336-033; or deposit@ ccdc.cam.ac.uk).
  • 35
    • 11144261976 scopus 로고    scopus 로고
    • note
    • Low-temperature crystal structures of the compounds were reported: AV at 150 K (ref. [5d]) and VA at 120 K (ref. [9]).
  • 38
    • 11144323954 scopus 로고    scopus 로고
    • note
    • Although the crystal structure of urea shows a chiral hexagonal structure, the channel is almost an ideal cylinder, with its center not deviating significantly from the sixfold crystallographic axis.
  • 46
    • 3843056957 scopus 로고    scopus 로고
    • g) Y. V. Mironov, N. G. Naumov, K. A. Brylev, O. A. Efremova, V. E. Fedorov, K. Hegetschweiler, Angew. Chem. 2004, 116, 1317-1321; Angew. Chem. Int. Ed. 2004, 43, 1297-1300.
    • (2004) Angew. Chem. Int. Ed. , vol.43 , pp. 1297-1300
  • 48
    • 0003592910 scopus 로고
    • University Press, Cambridge
    • The diversity of zeolite structures results from the 16 identified "secondary structural units" which must be fitted together to give the combinations of channels and cavities which yield the repeat unit of the zeolite structures; see W. Meier, D. H. Olson, Atlas of Zeolite Structure Types 2nd ed., University Press, Cambridge, 1987; (the list of the units is given on p 5 therein).
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    • Meier, W.1    Olson, D.H.2
  • 49
    • 11144315074 scopus 로고    scopus 로고
    • note
    • 2; average diameter of the channel, 5.2(1)/5.1(1) Å.
  • 50
    • 11144334930 scopus 로고    scopus 로고
    • note
    • The channel volumes were calculated from single-crystal XRD results by integration of the spatial figure composed of discs having diameters corresponding to the maximum-sized sphere that could be inscribed in the channel and centered on a given level along the crystallographic z axis.
  • 51
    • 11144345197 scopus 로고    scopus 로고
    • note
    • 1 relaxation times of adsorbed xenon in the materials studied were found to be in the range of 50 to 80 s and care was taken to set the delays in the NMR experiments sufficiently long to ensure quantitative results. Equilibrium was reached typically in 2 h and the data were highly reproducable both when approaching equilbrium in the sorption or desorption modes. The sorption isotherms were approximated by a Langmuir equation, and the maximum sorption capacity and sorption constants were calculated as described in Ref. [1h].
  • 53
    • 11144265966 scopus 로고    scopus 로고
    • note
    • -1.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.