----------------------------------------------------Dataset for article –------------------------------------------------------ Tetramethylalloxazines as efficient singlet oxygen photosensitizers and potential redox-sensitive agents Last update: 2023 08 17 --------------------Contact-------------------- *Radek Cibulka *ORCID 0000-0002-8584-7715 *Department of Organic Chemistry *University of Chemistry and Technology, Prague *Technická 5, Prague 6 *Czech Republic *Email: cibulkar@vscht.cz *Naisargi Varma *ORCID 0000-0002-1760-5458 *Faculty of Chemistry *Adam Mickiewicz University in Poznań *Uniwersytetu Poznańskiego 8, 61-614 Poznań *Poland *Email: naisargi.varma@amu.edu.pl *Marek Sikorski *ORCID 0000-0002-9527-7322 *Faculty of Chemistry *Adam Mickiewicz University in Poznań *Uniwersytetu Poznańskiego 8, 61-614 Poznań *Poland *Email: sikorski@amu.edu.pl --------------------About the dataset-------------------- *This dataset includes all information about the photophysical data of analysed compounds, techniques used for spectral characterization of prepared compounds. --------------------Methods of data collection-------------------- ***Emission Excitation Matrix*** emission excitation 3D matrix were recorded on Aqualog-UV-800 spectrophotometer from HORIBA Scientific, Model: AQUALOG-UV-800 *Data processing: All Emission Excitation Matrix were processed and assigned using Origin software. Collected data from Aqualog-UV-800 spectrophotometer (emission Excitation matrix) are in origin file. ***Absorption spectra*** (UV-Vis) spectra were recorded on SHIMADZU Corporation - UV-Vis spectrophotometer, MODEL: UV-2550 *Data processing: All UV-Vis spectra were processed and assigned using Origin software. Collected data from UV-Vis spectrophotometer (abs.spectra) are in text file 2a(4aa) in DMF 367nm _22082025.text document. ***Fluorescence spectra*** Fluorescence spectra were obtained on Spectrofluorometer from HORIBA JOBINYVON, MODEL: Jobin Yvon-Sphex Fluorolog 3–221 *Data processing: All fluorescence spectra were processed and assigned using Origin software. Collected data from spectrophotometer (fluorescence spectra) are in origin file. ***Fluorescence lifetime and singlet oxygen lifetime (Decay)*** decays were obtained on Spectrofluorometer from PICOQUANT, MODEL: FluoTime 300 time-resolved fluorescence spectrometer has Time-Correlated Single-Photon Counting (TCSPC) and Multichannel Scaling (MCS) techniques in a wide spectral range (220 – 800 nm with UV-Vis detector and 950 – 1450 nm with a NIR detector) ***Transient absorption spectra and triplet lifetime (Decay)*** All transient absorption spectra and triplet lifetime (Decay) were recorded on Laser Flash Photolysis (LFP), spectra were processed in SpectraWin 3.60 software,saved in text file_processed in origin. --------------------File formats-------------------- *Absorption spectra in text file, processed in origin *Fluorescence spectra - origin file, processed in origin *Fluorescence lifetime - text file, --------------------List of files-------------------- * Structures tetrametyl alloxazine structures - 1367-3a 1368-3b 1379-3c 1389-3d * Experimental notes – protocols List_of_experiments_ * Emission Excitation Matrix_raw origin file_processed origin file *raw data_ FL 1367 IFE FL 1368 IFE FL 1379 IFE FL 1389 IFE *Processed origin file FL 1367 IFE 1st rm FL 1368 IFE 1st rm FL 1379 IFE 1st rm FL 1389 IFE 1st rm folder of abs. spectra for Fluorescence quantum yield_ 1367,1379 1368,1389 folder for Fluo. QY spectra_ processed origin file containing absorption spectra_realated fluorescence spectra_abs. vs integrated fluorescence intensity plot. 1367 1368 and 1389 1379 *Fluorescence lifetime folder_text file