Thermochromism in polydiacetylene solutions

A novel planar ↔ nonplanar visual thermochromic conformational transition of polydiacetylene molecules in poor solvents is reported

G. N. Patel; J. D. Witt; Y. P. Khanna

2003

Scholarcy highlights

  • A novel planar ↔ nonplanar visual thermochromic conformational transition of polydiacetylene molecules in poor solvents is reported
  • The color transition occurs within a narrow range of temperature and has a large associated hysteresis
  • Fourier-transform infrared studies show that molecules acquire a planar conformation in red or blue gels by formation of intramolecular H bonds between the adjacent substituent groups
  • All H bonds break when the gels turn into yellow solutions

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