Zarandi, M. A.; Pathak, P.; Beltrami, N.; Walker, J. N.; Zhang, F.; Brodbelt, J. S.; Schmehl, R.; Jayawickramarajah, J. Heteromeric guanosine (G)-quadruplex derived antenna modules with directional energy transfer. Nanoscale 2023, 15, 19069-19073.
Abstract
A heteromeric guanosine (G)-quadruplex centered self-assembly approach is developed to prepare compact light-harvesting antenna modules featuring multiple donor dyes and a single toehold region. Due to the mix-and-match nature of our approach, the number and placement of donor dyes can be readily fine-tuned via quadruplex assembly. Moreover, hybridization of the toehold with an acceptor containing sequence results in directional energy transfer ensembles with effective absorption coefficients in the 105 M−1 cm−1 range. These compact antennas exhibit system efficiencies that are comparable to much larger and elaborate DNA architectures containing numerous DNA strands.