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The aggregations or crystals of Acridine Orange (free base) within the void places of polyvinyl alcohol fibre

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Summary

The visible absorption spectra of dye crystals and the cross-section of the polyvinyl alcohol fibre dyed with Acridine Orange as free base were measured by means of a microspectrophotometer. The spectra of crystals show a sharp and high maximum at 450 nm which will be referred to as the peak from dye crystals. The spectra of the cross-section of dyed fibre show three peaks of 443 nm (crystals-band), 470 nm (β-band) and 499 nm (α-band). These results suggest that crystals, aggregates and monomer of the dye exist within the dyed polyvinyl alcohol fibre.

Zusammenfassung

Mit Hilfe des Mikrospektrophotometers wurden die Absorptionsspektren im Sichtbaren von Farbstoffkristallen und von Querschnitten der mit Acridin-Orange als freie Base gefärbten Polyvinylalkoholfasern gemessen. Die Kristallspektren zeigen ein scharfes und hohes Maximum bei 450 nm, das der Bande des Farbstoffkristalls zugeordnet werden muß. Die Spektren der Querschnitte gefärbter Fasern zeigen drei Banden: bei 443 nm die Kristallbande, bei 470 nm dieβ-Bande und bei 499 nm die α-Bande. Dies läßt vermuten, daß in den Polyvinylalkoholfasern Kristalle, Aggregate und Monomere des Farbstoffs existieren.

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References

  1. Ohtsu, T., K. Nishida, K. Nagumo, andK. Tsuda, Kolloid-Z. u. Z. Polymere249, 1077 (1971).

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  2. Tsuda, K., K. Nishida, H. Watanabe, andT. Hirata, Kolloid-Z. u. Z. Polymere240, 827 (1970).

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The authors acknowledge the help of Prof. S.Nishimura (Tokyo University of Agriculture and Technology) and Mr.S. Mitsuhashi (Research Institute for Polymers and Textiles) with useful suggestions and Mr.T. Horie for experimental work.

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Ohtsu, T., Nishida, K., Nagumo, K. et al. The aggregations or crystals of Acridine Orange (free base) within the void places of polyvinyl alcohol fibre. Kolloid-Z.u.Z.Polymere 250, 860–862 (1972). https://doi.org/10.1007/BF01506237

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  • DOI: https://doi.org/10.1007/BF01506237

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