Cubic susceptibilities of polydiacetylene Langmuir-Blodgett films annealed before photopolymerization

The wave dispersion of cubic susceptibility χ (3) of green-form polydiacetylene, which can be obtained by annealing a diacetylene Langmuir-Blodgett film before photo-polymerization, was measured for the first time and compared with that of a blue form obtained from the same monomer without the annea...

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Bibliographic Details
Published in:Thin solid films 1996-09, Vol.284, p.600-602
Main Authors: Hara, S., Arise, T., Yamamoto, R., Uchimura, M., Sasabe, M., Matsuda, H., Nakanishi, H.
Format: Article
Language:English
Subjects:
Non-linear optical effect
Polydiacetylene
Third harmonic generation
Visible absorption
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Summary:The wave dispersion of cubic susceptibility χ (3) of green-form polydiacetylene, which can be obtained by annealing a diacetylene Langmuir-Blodgett film before photo-polymerization, was measured for the first time and compared with that of a blue form obtained from the same monomer without the anneal. The maximum ¦χ (3)¦ of the green form (0.97 × 10 −10esu) is smaller than that of the blue form (1.2 × 10 −10 esu). This result indicates that though the green form has a highly ordered structure by the anneal, π-electron delocalizability along its polymer main chain decreases.
ISSN:0040-6090
1879-2731
DOI:10.1016/S0040-6090(95)08400-2