@phdthesis{Bold2022, author = {Bold, Kevin}, title = {Macrocyclic Oligothiophene Bridged Perylene Bisimide Donor-Acceptor Dyads}, doi = {10.25972/OPUS-27192}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-271926}, school = {Universit{\"a}t W{\"u}rzburg}, year = {2022}, abstract = {A series of donor-acceptor macrocyclic architectures comprising oligothiophene strands that connect the imide positions of a perylene bisimide have been synthesized via a platinum-mediated cross-coupling strategy. The target structures were characterized by steady-state UV/Vis absorption, fluorescence and transient absorption spectroscopy, as well as cyclic and differential pulse voltammetry. Crystal structure analysis of the macrocycles revealed insights into the bridge arrangements. The properties of the macrocyclic bridges were compared to linear oligothiophene reference compounds which itself exhibited an unusual electrochemical effect.}, subject = {Perylenbisdicarboximide}, language = {en} } @article{BoldStolteShoyamaetal.2022, author = {Bold, Kevin and Stolte, Matthias and Shoyama, Kazutaka and Holzapfel, Marco and Schmiedel, Alexander and Lambert, Christoph and W{\"u}rthner, Frank}, title = {Macrocyclic donor-acceptor dyads composed of a perylene bisimide dye surrounded by oligothiophene bridges}, series = {Angewandte Chemie Internationale Edition}, volume = {61}, journal = {Angewandte Chemie Internationale Edition}, number = {1}, doi = {10.1002/anie.202113598}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-256569}, year = {2022}, abstract = {Two macrocyclic architectures comprising oligothiophene strands that connect the imide positions of a perylene bisimide (PBI) dye have been synthesized via a platinum-mediated cross-coupling strategy. The crystal structure of the double bridged PBI reveals all syn-arranged thiophene units that completely enclose the planar PBI chromophore via a 12-membered macrocycle. The target structures were characterized by steady-state UV/Vis absorption, fluorescence and transient absorption spectroscopy, as well as cyclic and differential pulse voltammetry. Both donor-acceptor dyads show ultrafast F{\"o}rster Resonance Energy Transfer and photoinduced electron transfer, thereby leading to extremely low fluorescence quantum yields even in the lowest polarity cyclohexane solvent.}, language = {en} }