Control of electron-transfer and DNA binding properties by the tolyl spacer group in viologen linked acridines
Article Abstract:
Novel water soluble viologen and pyridinium linked tolyacrudunes 1a, b and 2a,b was synthesized and their photophysical and DNA binding properties including the photoinduced electron-transfer reactions were investigated. The fluorescence quantum yields of the viologen linked tolyacridines were found to be lower when compared to those of the pyridinium linked and unsubstituted tolyacridine derivatives, suggesting thereby the fluorescence of the acridine chromophore is efficiently quenched by the viologen moiety in these systems.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2003
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Novel bifunctional viologen-linked pyrene conjugates: Synthesis and study of their interactions with nucleosides and DNA
Article Abstract:
A new series of viologen linked pyrene conjugates with the general formula [PYL.sub.n][V.sup.2} having a different number of methylene spacer units (Ln) was synthesized and investigated with the objective of developing efficient DNA oxidizing agents. The results show that the pyrene moiety in these molecules constitutes an interesting variation and plays a major role in controlling the electron-transfer pathways, which lead to the efficient photooxidation of DNA.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2006
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Novel bifunctional acridine-acridinium conjugates: Synthesis and study of their chromophore-selective electron-transfer and DNA-binding properties
Article Abstract:
A novel bifunctional acridine-acridinium conjugates with varying polymethylene spacer groups were synthesized and their DNA interactions were investigated using various biophysical techniques. The results demonstrate that these novel water-soluble system that exhibit quantitative fluorescence yields, chromophore-selective electron transfer.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2005
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