Macromolecular structure of cellulose studied by second-harmonic generation imaging microscopy.

@article{Brown2003MacromolecularSO,
  title={Macromolecular structure of cellulose studied by second-harmonic generation imaging microscopy.},
  author={R Malcom Brown and Andrew C. Millard and Paul J Campagnola},
  journal={Optics letters},
  year={2003},
  volume={28 22},
  pages={2207-9}
}
The macromolecular structure of purified cellulose samples is studied by second-harmonic generation (SHG) imaging microscopy. We show that the SHG contrast in both Valonia and Acetobacter cellulose strongly resembles that of collagen from animal tissues, both in terms of morphology and polarization anisotropy. Polarization analysis shows that microfibrils in each lamella are highly aligned and ordered and change directions by 90 degrees in adjacent lamellae. The angular dependence of the SHG… CONTINUE READING

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