purine D–A–D′ ligand based ratiometric chemical sensor

Justina Jovaisaite, Dace Cīrule, Andris Jeminejs, Irina Novosjolova, Māris Turks, Paulius Baronas, Regimantas Komskis, Sigitas Tumkevicius, Gediminas Jonusauskas, Saulius Jursenas

1. Materials and Methods ......................................................................................................................................... 3 1.1 Steady-state (absorption, fluorescence and quantum yield) experiments ................................................. 3 1.2 Time-resolved fluorescence and transient absorption experiments ........................................................... 4 1.3 Density Functional Theory (DFT) Calculations .............................................................................................. 4 2. Synthesis and product characterization ................................................................................................................ 5 Results .......................................................................................................................................................................... 16 3. Optical properties ................................................................................................................................................ 16 4. Theoretical calculations ....................................................................................................................................... 23 5. NMR titration experiments ................................................................................................................................. 28 5.1 Titration of compound 3 with Ca(ClO4)2•4H2O ........................................................................................... 28 5.2 Titration of compound 3 with Zn(ClO4)2•6H2O ........................................................................................... 30 5.3 Titration of compound 6 with Zn(ClO4)2•6H2O ........................................................................................... 32 5.4 Titration of compounds 2 and 4 with Zn(ClO4)2•6H2O and Ca(ClO4)2•4H2O .............................................. 34

Date
13.11.2020.
Keywords
purine D–A–D′ ligand based ratiometric chemical sensor
DOI
10.1039/D0CP04091F
Hyperlink
https://pubs.rsc.org/en/content/articlelanding/2020/CP/D0CP04091F#!divAbstract