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Modulation of internal charge transfer (ICT) in a bay region hydroxylated perylenediimide (PDI) chromophore: a chromogenic chemosensor for pH
Date
2005-08-29
Author
Yukruk, F
Akkaya, EU
Metadata
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A novel perylenediimide derivative which has a bay region hydroxyl function behaves as a pH-sensitive dye. The deprotonation of the aryl-OH yields a green solution with a lambda(max) x of 692 nm and this deprotonated form has strong internal charge transfer characteristics. On reprotonation in acidic solutions, the typical PDI absorbance spectrum is restored. The experimentally determined pK(a) (7.45) is very close to physiological pH, therefore the most significant changes in color take place in the vicinity of this pH value.
Subject Keywords
Organic Chemistry
,
Biochemistry
,
Drug Discovery
URI
https://hdl.handle.net/11511/65566
Journal
TETRAHEDRON LETTERS
DOI
https://doi.org/10.1016/j.tetlet.2005.06.122
Collections
Department of Chemistry, Article
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F. Yukruk and E. Akkaya, “Modulation of internal charge transfer (ICT) in a bay region hydroxylated perylenediimide (PDI) chromophore: a chromogenic chemosensor for pH,”
TETRAHEDRON LETTERS
, pp. 5931–5933, 2005, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/65566.