Solvation and dynamic behavior of cyclodextrins in dimethyl sulfoxide solution

Journal of Physical Chemistry B

Volumn 110, Issue 37, 2006, Pages 18112-18114

  Shikata, Toshiyuki ^a   Takahashi, Rintaro ^a   Onji, Takeshi ^a   Satokawa, Yuichi ^a   Harada, Akira ^a  

^a OSAKA UNIVERSITY   (Japan)

Author keywords

[No Author keywords available]

Indexed keywords

DIELECTRIC RELAXATION; HYDROGEN; HYDROGEN BONDS; MOLECULAR DYNAMICS; NATURAL FREQUENCIES;

DIMETHYL SULFOXIDE; METHYLATED CYCLODEXTRINS; ROTATIONAL RELAXATION MODES;

SULFUR COMPOUNDS;

EID: 33749637855     PISSN: 15206106     EISSN: None     Source Type: Journal    
DOI: 10.1021/jp0645667     Document Type: Article

References (22)

1. Szejtli, J. Comprehensive Supramolecular Chemistry; Szejtli, J., Osa, T., Ed.; Pergamon: Oxford, 1996; Vol. 3, Chapter 5.
2. Szejtli, J. Chem. Rev. 1998, 98, 1743-1753.
3. (a) Harada, A.; Li, J.; Kamachi, M. Nature 1992, 356, 325-327.
4. (b) Harada, A.; Li, J.; Kamachi, M. Nature 1993, 364, 516-518.
5. (c) Harada, A.; Li, J.; Kamachi, M. Nature 1994, 370, 126-128.
6. Bar, R. Comprehensive Supramolecular Chemistry, Szejtli, J., Osa, T., Ed.; Pergamon: Oxford, 1996; Vol. 3, Chapter 13.
7. (a) Okumura, Y.; Ito, K. Adv. Mater. 2001, 13, 485-487.
8. (b) Karino, T.; Okumura, Y.; Ito, K.; Shibayama, M. Macromolecules 2004, 37, 6177-6182.
9. (a) Nandi, N.; Bhattacharyya, K.; Bagchi, B. Chem. Rev. 2000, 100, 2013-2045.
10. (b) Nandi, N.; Bagchi, B. J. Phys. Chem. B 1997, 101, 10954-10961.
11. (c) Ono, Y.; Shikata, T. J. Am. Chem. Soc. 2006, 128, 10030-10031.
12. Sen, S.; Suluk, D.; Dutta, P.; Bhattacharyya, K. J. Phys. Chem. A 2001, 105, 10635-10639.
13. Sen, P.; Roy, D.; Mondal, S. K.; Sahu, K.; Ghosh, S.; Bhattacharyya, K. J. Phys. Chem, A 2005, 109, 9716-9722.
14. α-, β-, γ-CD, and 62mβ-CD were purchased from Wacker Chemicals Co. (Adrian), pmα-, pmβ-, and pmγ-CD were synthesized from each plain CD through reaction with sodium hydride and methyl iodide according to Boger, J.; Corcoran, R. J.; Lehn, J.-M. Helv. Chim. Acta 1978, 61, 219-2218. The purity of the obtained permethylated CDs and the degree methylation for 62mβ-CD were confirmed using NMR measurements.
15. dc are the capacitance of a (vacant) used electrode cell, that of a sample, conductivity of the sample, and direct current conductivity of the sample due to ionic impurities, respectively. In a frequency range from 50 M to 20 GHz, ε′ and ε″ were determined by using a dielectric material probe system (Hewlett-Packard, 85070B), consisting of a network analyzer (Hewlett-Packard, 8720ES). Details were described elsewhere (Imai, S.; Shiokawa, M; Shikata, T. J. Phys. Chem. B 2001, 105, 4495-4502).
16. ∞" = 3.95.
17. Ono, Y.; Shikata, T. J. Phys. Chem. B 2006, 110, 9426-9433.
18. ∞ - 1) were simply assumed.
19. V̄CD was evaluated via density measurements of sample solutions at 25.0 °C using a DMA5000 density meter (Anton Paar, Graz, Austria). Because CDs contained small amounts of unremovable water molecules due to strong hydration, the obtained V̄CD values possibly include error bounds less than 2%.
20. -1 = Φ = (1.1 - φ)/(1.1 + φ/2).
21. ex1 mode is presumably assigned to die exchange mode of DMSO molecules hydrogen bonded to OH groups.
22. Debye, P. Polar Molecules; The Chemical Catalog Co., Inc.: New York, 1929; Chapter 5.