The effect of inosine on the spectroscopic properties and crystal structure of a NIR-emitting DNA-stabilized silver nanocluster.
Cerretani, C., Liisberg, M.B., Ruck, V., Kondo, J., Vosch, T.(2022) Nanoscale Adv 4: 3212-3217
- PubMed: 36132821 
- DOI: https://doi.org/10.1039/d2na00325b
- Primary Citation of Related Structures:  
7XLV, 7XLW - PubMed Abstract: 
The effect of replacing guanosines with inosines in the two stabilizing strands (5'-CACCTAGCGA-3') of the NIR emissive DNA-Ag 16 NC was investigated. The spectroscopic behavior of the inosine mutants is position-dependent: when the guanosine in position 7 was exchanged, the nanosecond fluorescence decay time shortened, while having the inosine in position 9 made the decay time longer. Thanks to structural information gained from single crystal X-ray diffraction measurements, it was possible to propose a mechanistic origin for the observed changes.
Organizational Affiliation: 
Nanoscience Center and Department of Chemistry, University of Copenhagen Universitetsparken 5 2100 Copenhagen Denmark tom@chem.ku.dk.