N-Heteroacenes and N-Heteroarenes as N-Nanocarbon Segments

UHF Bunz, J Freudenberg - Accounts of chemical research, 2019 - ACS Publications
Conspectus N-Heteroacenes and N-heteroarenes are the heterocyclic congeners of the
acenes and arenes, in which one or several perimeter C–H bonds have been substituted by …

Quantum chemical approach to study TIPSTAP derivatives with anticipated minimized crystal roughness for photovoltaic application with estimated PCE of over 20%

RA Shehzad, K Ayub, MS Al-Buriahi, N Alfryyan… - Solar Energy, 2022 - Elsevier
In this study, we probed the TIPSTAP molecule, which is highly appropriate for developing
organic photovoltaic cells, but its use was hampered due to crystal brittleness and limpidity …

Singlet fission in tetraaza-TIPS-pentacene oligomers: From fs excitation to μs triplet decay via the biexcitonic state

N Alagna, JL Pérez Lustres, N Wollscheid… - The Journal of …, 2019 - ACS Publications
Generating two long-living low-energy excitations after absorption of a single high-energy
photon has stoked interest in singlet fission (SF) to enhance solar energy conversion in …

Azaacene dimers: Acceptor materials with a twist

L Ahrens, J Butscher, V Brosius… - … A European Journal, 2020 - Wiley Online Library
The synthesis of five spiro‐linked azaacene dimers is reported and their properties are
compared to that of their monomers. Dimerization quenches emission of the longer …

Oxygen-catalysed sequential singlet fission

N Wollscheid, JL Pérez Lustres, O Kefer, S Hahn… - Nature …, 2019 - nature.com
Singlet fission is the photoinduced conversion of a singlet exciton into two triplet states of
half-energy. This multiplication mechanism has been successfully applied to improve the …

Yamamoto Coupling for the Synthesis of Benzophenes and Acene‐Based Cyclooctatetraenes

EC Rüdiger, S Koser, F Rominger… - … A European Journal, 2018 - Wiley Online Library
Two TIPS‐ethynylated dibromoacenes were used in a shotgun Yamamoto‐reaction with 1, 2‐
dibromobenzene or 4, 5‐dibromoveratrol. Four soluble benzononaphenes …

Synthesis and Optoelectronic Properties of a Quinoxalino‐Phenanthrophenazine (QPP) Extended Tribenzotriquinacene (TBTQ)

L Ueberricke, B Punja Benke… - … A European Journal, 2021 - Wiley Online Library
A six‐step synthesis towards a tribenzotriquinacene (TBTQ) bearing three
quinoxalinophenanthrophenazine (QPP) units is presented. The optoelectronic properties …

Dimeric Phenazinothiadiazole Acceptors in Bulk Heterojunction Solar Cells

L Ahrens, YJ Hofstetter, B Celik, JF Butscher… - Organic …, 2021 - thieme-connect.com
Two covalently linked triisopropylsilyl-ethynylated phenazinothiadiazoles were prepared
through condensation of a spirocyclic and a bicyclic tetraketone with a 5, 6 …

Syntheses of linear azapentacenes

GA Zissimou, PA Koutentis - Progress in Heterocyclic Chemistry, 2023 - Elsevier
This chapter surveys the syntheses of linear azapentacenes comprised of six-membered
arenes with 1 to 10 nitrogens in the periphery. Angular azapentacenes and azapentacenes …

Exploring the role of chemical substitution and geometrical changes on singlet fission via time resolved spectroscopy

N Alagna - 2021 - archiv.ub.uni-heidelberg.de
Singlet fission (SF) is a photophysical reaction where a singlet excited organic molecule
shares its energy with a neighbor ground state organic molecule, generating two spin-triplet …