1 "Petru Poni" Institute of Macromolecular Chemistry, Centre Advanced Research in Bionanoconjugates and Biopolymers, 41A, Gr. Ghica Voda, 700487 Iasi, Romania.
Functional G-quartet hydrogels formed from natural guanosine cross linked with benzene-1,4-diboronic acid and Mg2+ support cell growth with no visible signs of gel degradation.