Title
Orientational Control of Circularly Polarized Luminescence from Pyrene Clusters using a DNA Scaffold.
Author
Hiromu Kashida, Yuka Ito, Takahiro Kakuta, Tomoki Ogoshi, Hiroyuki Asanuma
Year
2023
Journal
Chemistry A Europen Journal
Abstract
We herein investigated chiroptical activities of pyrene clusters incorporated within a DNA duplex. Three pyrene derivatives were prepared on D-threoninol linkers to allow incorporation within a DNA strand. DNA scaffolds were prepared containing dimers, tetramers, and hexamers of the pyrene derivatives. The homo dimers of 1-pyrenecarboxylic acid and of 4-pyrenecarboxylic acid, but not 2-pyrenecarboxylic acid, emitted intense circularly polarized luminescence signals. Although increasing the number of pyrene units weakened the signal, insertion of natural base pairs between two dimers enhanced its intensity. Interestingly, circularly polarized luminescence intensities varied non-monotonically depending on the number of intervening base pairs, indicating the importance of orientation between pyrene dimers. The results presented here will lead to development bright circularly polarized luminescence materials and probes.
Full Article
Instrument
CPL-300, V-530, V-730, FP-8500, J-820
Keywords
chiroptical, DNA, materials