Microspectroscopic Analyses of Dye Distribution Characteristics in Single Microcapsules

Analytical Chemistry

Volumn 70, Issue 1, 1998, Pages 111-116

  Kim, Haeng Boo ^a   Yoshida, Shuri ^a   Miura, Atsushi ^a   Kitamura, Noboru ^a  

^a HOKKAIDO UNIVERSITY   (Japan)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0000919543     PISSN: 00032700     EISSN: None     Source Type: Journal    
DOI: 10.1021/ac970743b     Document Type: Article

References (22)

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2. (b) Kondo, A. Microcapsule Process and Technology, Marcel Dekker: New York, 1979.
3. (a) Muramatsu, N.; Kondo, T. J. Biomed. Mater. Res. 1980, 14, 211-224.
4. (b) Kidokoro, M.; Ohshima, H.; Kondo, T. J. Microencapsulation 1991, 8, 63-70.
5. Watarai, H.; Hatakeyama, S. Anal. Sci. 1991, 7, 487-489.
6. Koshioka, M.; Misawa, H.; Sasaki, K.; Kitamura, N.; Masuhara, H. J. Phys. Chem. 1992, 96, 2909-2914.
7. Preliminary results have been reported: Kim, H.-B.; Yoshida, S.; Miura, A.; Kitamura, N. Chem. Lett. 1996, 923-924.
8. Masuhara, H., De Schryver, F. C., Kitamura, N., Tamai, N., Eds. Microchemistry-Spectroscopy and Chemistry in Small Domains; North Holland: Amsterdam, 1994.
9. Kitamura, N.; Hayashi, M.; Kim, H.-B.; Nakatani, K. Anal. Sci. 1996, 12, 49-54.
10. Kitamura, N.; Nakatani, K.; Kim, H.-B. Pure Appl. Chem. 1995, 67, 79-86.
11. Kim, H.-B.; Yoshida, S.; Kitamura, N. Anal. Chem. 1998, 70, 51-57 (in this issue).
12. Misawa, H.; Koshioka, M.; Sasaki, K.; Kitamura, N.; Masuhara, H. J. Appl. Phys. 1991, 70, 3829-3836.
13. 7.9 However, since the absorption spectral band shape of the dye was independent of the capsule size with the d range of 8-30 μm, such an effect is neglected in the present experiments.
14. Misawa, H.; Kitamura, N.; Masuhara, H. J. Am. Chem. Soc. 1991, 113, 7859-7863.
15. 2TPP, respectively.
16. 0.
17. For this equation to be applied, the radius of a probe beam (h) must be small compared with the radius of a capsule (r): h/r < 0.2. In the present experiments, the diameter of the probe beam was set to ∼1 μm, while that of the capsules studied ranged between d = 8 and 25 μm. Therefore, this condition of h < < r is safely satisfied. See also ref 9.
18. The γ value was almost independent of [MTPP] at 5 ± 1 μm for three derivatives.
19. Chemical Society of Japan, Ed. Kagaku Sousetsu; Gakkai Shuppan Center: Tokyo, 1978; No. 20 (in Japanese).
20. Sasaki, T. Heterocyclic Compounds; Tokyo Kagaku Dojin: Tokyo, 1972 (in Japanese).
21. Cyclic voltammetry measurements of a DO13/acetonitrile solution indicate that the oxidation potential of the compound is more positive than ∼+1.4 V (vs SCE).
22. Kim, H.-B.; Hayashi, M.; Nakatani, K.; Kitamura, N.; Sasaki, K.; Hotta, J.; Masuhara, H. Anal. Chem. 1996, 68, 409-414.