Kinetics of chain organization at the thermochromic transition of polysilanes

Chemistry Letters

Volumn , Issue 3, 1998, Pages 255-256

  Sanji, Takanobu ^a,b   Sakamoto, Kenkichi ^b   Sakurai, Hideki ^a,b  

^a TOKYO UNIVERSITY OF SCIENCE   (Japan)

^b TOHOKU UNIVERSITY   (Japan)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0032329864     PISSN: 03667022     EISSN: None     Source Type: Journal    
DOI: 10.1246/cl.1998.255     Document Type: Article

References (27)

1. Chemistry of Organosilicon Compounds 351.
2. For reviews of polysilane, see: a) R. West, J. Organomet. Chem., 300, 327 (1986).
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11. Preliminary results of this paper were presented at "Sendai International Symposium on the Frontiers of Oganosilicon Chemistry", Sendai, Japan, November 4-6, 1994, Abstract p 198. Very recently, related work has been reported: M. M. Despotopoupou, C. W. Frank, R. D. Miller, and J. F. Rabolt, Macromolecules, 29, 5797 (1996).
12. Preliminary results of this paper were presented at "Sendai International Symposium on the Frontiers of Oganosilicon Chemistry", Sendai, Japan, November 4-6, 1994, Abstract p 198. Very recently, related work has been reported: M. M. Despotopoupou, C. W. Frank, R. D. Miller, and J. F. Rabolt, Macromolecules, 29, 5797 (1996).
13. Recently, restrictions of the conformational change of PDHS in ultrathin spincast films less than 150 Å thick have been reported; M. M. Despotopoupou, C. W. Frank, R. D. Miller, and J. F. Rabolt, Macromolecules, 28, 6687 (1995).
14. When the quenching temperature was 28°C, very close to the transition temperature, the peak corresponding to the all-trans forms increased very slowly. Even after several hours, the peak did not reach to the 100 % level.
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19. This equation was derived independently by A. N. Kolmogorov, (Bull. Acad Sci. U. S. S. R. Phys. Ser., 3, 355 (1937).) and M. Avrami, (J. Chem. Phys., 7, 1103 (1939). and 8, 212 (1940). and 9, 177 (1941).)
20. This equation was derived independently by A. N. Kolmogorov, (Bull. Acad Sci. U. S. S. R. Phys. Ser., 3, 355 (1937).) and M. Avrami, (J. Chem. Phys., 7, 1103 (1939). and 8, 212 (1940). and 9, 177 (1941).)
21. This equation was derived independently by A. N. Kolmogorov, (Bull. Acad Sci. U. S. S. R. Phys. Ser., 3, 355 (1937).) and M. Avrami, (J. Chem. Phys., 7, 1103 (1939). and 8, 212 (1940). and 9, 177 (1941).)
22. This equation was derived independently by A. N. Kolmogorov, (Bull. Acad Sci. U. S. S. R. Phys. Ser., 3, 355 (1937).) and M. Avrami, (J. Chem. Phys., 7, 1103 (1939). and 8, 212 (1940). and 9, 177 (1941).)
23. It should be noted that this formulation only works when the nucleation and growth are governed by a single characteristic time.
24. The growth dimension of the crystallization is further supported by analyses of the Avrami equation which is developed for polymer crystallization. All the growth of trans fractions were fit the Avrami equation of homogeneous nucleation. At each quenching temperature the dimension of the nucleation was calculated to be 3.
25. 13
26. a) J. G. Amar, F. E. Sullivan, and R. D. Mountain, Phys. Rev. B., 37, 196 (1988).
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