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Triplet state properties of the benzo[α]pyrene-DNA complex as determined by optically detected zero-field magnetic resonance

✍ Scribed by Pierre A. Chiha; Richard H. Clarke; Erich Kramer

Publisher: Elsevier Science
Year: 1977
Tongue: English
Weight: 427 KB
Volume: 50
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(77)80680-5

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✦ Synopsis

The rero-f~cld trmsltious in the photoexcitcd triplet st:lte of bcn~o[a] pyrenc bound to DNA II.IVC been ob~rved by optical detection of rnaguet~c resondncc dt 2 K. The trJnsitlorr frequenclc\ .md indlvldmd spm sublcvcl mtcrqstem crossmq rates were measured by nlonltormg the rlllcrowave-lnduc~:tl intcnGty chnng~ of the trlplct -trIplet ab\orptlon at 465 8 nm. The trIplet state zero-flcld splittmg ad dynarnxs for the benro[rz] pyrcne -DNA complex .1x compared with thae prnpertla _ nlcawrcd for bcn&x)pyrcne in other sqlvmt systcrw.

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