Domain-Wall Dynamics of Photo-Induced Phase Transition in Polydiacetylene Single Crystals

Koshihara, Shin‐ya; Akimoto, Kyohei; Tokura, Y.; Takeda, Kenji; Koda, T.

doi:10.1007/978-3-642-60702-8_11

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2006

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“…Similarly, thermally induced B ⇔ R transitions in PDA single crystals do not imply electronic excitation. However, transitions triggered by light have been reported in bulk PDA crystals showing a thermal reversible transition; in addition, an irrreversible B ⇒ R transition has been reported in solid films of the LB film forming PDA 12/8 . I am not aware of any similar result in Langmuir or LB films.…”

Section: Introductionmentioning

confidence: 98%

The Colors of Polydiacetylenes: a Commentary

2006

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Polydiacetylenes (PDA) can take several colors, mostly "red" and "blue", and blue-to-red color transitions are usually considered as transitions from a well ordered state to a disordered one. Recent work on single isolated PDA chains shows that this is not correct: red chains can be quasi-perfect quantum wires. The transition is between two different chain conformations, and each may, or may not, be perfectly ordered. Disorder, when it occurs, is a side-product of the transformation.

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Section: Introductionmentioning

confidence: 98%