"The results will be published in high impact factor international scientific journals:
1. Čížková, M.; Cattiaux, L.; Mallet, J.-M.; Labbé, E.; Buriez, O. „Switching Fluorescence Emission in Rhodamine Derivatives"" ChemElectroChem submitted.
2. Čížková, M.; Cattiaux, L.; Mallet, J.-M.; Labbé, E.; Buriez, O. „Rhodamine-Ferrocene based switchable dyad in cell imaging"" Angew. Chem. Int. Ed. in preparation.
3. Čížková, M.; Cattiaux, L.; Mallet, J.-M.; Labbé, E.; Buriez, O. „Redox-controlled fluorescence modulation in NBD-Ferrocene derivative"" Electrochimica Acta in preparation.
The results were also presented in international conferences in order to increase the impact of the work:
1. RACI National Centenary Conference, Melbourne, Australia, 23-28 July, 2017.
2. 231st ECS Meeting, New Orleans, Louisiana, USA, 28 May - 1 June, 2017.
3. PRIME 2016, Honolulu, Hawaii, 2-7 October, 2016.
4. 67th Annual Meeting of the International Society of Electrochemistry, The Hague, Netherlands, 21-26 August, 2016.
Rhodamine derivatives
The photophysical and electrochemical properties of various rhodamine 101 derivatives have been investigated. The commercially available Rh101, used as a reference model, was first examined. Next, Rh101 was modified with an alkyne moiety. Subsequently, it was used for the synthesis of the triazole derivative. All three rhodamine derivatives were investigated by UV-Vis/fluorescence spectroscopy, cyclic voltammetry and UV-Vis/fluorescence spectroelectrochemistry. Fluorescence switching of Rh101 was achieved electrochemically. Electrochemical fluorescence extinction was successfully achieved also with both newly prepared derivatives. Moreover, it was shown that fluorescence of triazole derivative could be recovered electrochemically. This opened new perspectives in the use of rhodamine 101 derivatives as electrofluorochromic probes where the reactive bright fluorescent alkyne derivative could be utilized as a versatile and convenient unit for click functionalization with various partners including biomolecules. TD-DFT calculations were performed on the alkyne derivative and its reduced form.
Rhodamine-ferrocene derivative
Fluorescence of a rhodamine derivative was quenched by the attachment of ferrocene functional group through the photoinduced electron transfer (PET). Possibility to deactivate photoinduced electron transfer electrochemically leading to fluorescence switch on was examinated. First, fundamental optical and electrochemical properties of rhodamine- ferrocene derivative were studied by UV-Vis/fluorescence spectroscopy and cyclic voltammetry. Subsequently, fluorescence spectroelectrochemical experiments proved that PET in rhodamine-ferrocene compound can be electrochemically deactivated and fluorescence can be recovered.
NBD derivatives
"
