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Rotations in Excited ICT States – Fluorescence and its Microenvironmental Sensitivity
Author(s) -
Liese David,
Haberhauer Gebhard
Publication year - 2018
Publication title -
israel journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.908
H-Index - 54
eISSN - 1869-5868
pISSN - 0021-2148
DOI - 10.1002/ijch.201800032
Subject(s) - chemistry , excited state , fluorescence , sensitivity (control systems) , photochemistry , nanotechnology , atomic physics , optics , physics , materials science , electronic engineering , engineering
Fluorescence spectroscopy as an analytical tool for various applications as well as fluorescence probes showing a sensitive behavior towards their microenvironmental properties have experienced an increasing interest in research in the last decades. Recently our group has contributed to this field of interest by introducing a novel mechanism where a planarization in the excited state occurs leading to an advantageous allowed emission. Here, we provide an overview of intramolecular charge transfer states where a rotation in the excited state causes a high sensitivity for microenvironmental changes. Furthermore, effects which influence the surroundings of the fluorophores are described in detail. Recent results where t wisted i ntramolecular c harge t ransfer (TICT) and a ggregation‐ i nduced e mission (AIE) effects were combined are described and a promising outlook for further research progress is provided.