Outputs (10)

An unusual plank-shaped nematogen with a graphene nanoribbon core (2019)
Journal Article
Farias, G., Simeão, D. S., Moreira, T. S., dos Santos, P. L., Bentaleb, A., Girotto, E., …Bechtold, I. H. (2019). An unusual plank-shaped nematogen with a graphene nanoribbon core. Journal of Materials Chemistry C Materials for optical and electronic devices, 7(39), 12080-12085. https://doi.org/10.1039/c9tc03704g

A [12]phenacene exclusively decorated with four lateral hexylester substituents self-assembles into a nematic liquid crystal glass on cooling after melting at high temperature. This uniaxial nematic organization of a plank-shaped nanographene is unpr... Read More about An unusual plank-shaped nematogen with a graphene nanoribbon core.

Molecular Design Strategies for Color Tuning of Blue TADF Emitters (2019)
Journal Article
Stachelek, P., Ward, J. S., dos Santos, P. L., Danos, A., Colella, M., Haase, N., …Brook, P. (2019). Molecular Design Strategies for Color Tuning of Blue TADF Emitters. ACS Applied Materials and Interfaces, 11(30), 27125-27133. https://doi.org/10.1021/acsami.9b06364

New thermally activated delayed fluorescence (TADF) blue emitter molecules based on the known donor−acceptor−donor (D−A−D)- type TADF molecule, 2,7-bis(9,9-dimethylacridin-10-yl)-9,9-dimethylthioxanthene- S,S-dioxide (DDMA-TXO2), are reported. The mo... Read More about Molecular Design Strategies for Color Tuning of Blue TADF Emitters.

Revealing Resonance Effects and Intramolecular Dipole Interactions in the Positional Isomers of Benzonitrile-Core Thermally Activated Delayed Fluorescence Materials (2019)
Journal Article
Kukhta, N., Higginbotham, H., Matulaitis, T., Danos, A., Bismillah, A., Haase, N., …Monkman, A. (2019). Revealing Resonance Effects and Intramolecular Dipole Interactions in the Positional Isomers of Benzonitrile-Core Thermally Activated Delayed Fluorescence Materials. Journal of Materials Chemistry C Materials for optical and electronic devices, 7(30), 9184-9194. https://doi.org/10.1039/c9tc02742d

We report on the properties of the three positional isomers of (2,7-di-tert-butyl-9,9-dimethylacridin-10(9H)-yl)benzonitrile, which are found to have comparable donor steric environments and donor–acceptor dihedral angles. An unexpected intramolecula... Read More about Revealing Resonance Effects and Intramolecular Dipole Interactions in the Positional Isomers of Benzonitrile-Core Thermally Activated Delayed Fluorescence Materials.

Revising of the Purcell effect in periodic metal-dielectric structures: the role of absorption (2019)
Journal Article
Morozov, K. M., Ivanov, K. A., de Sa Pereira, D., Menelaou, C., Monkman, A. P., Pozina, G., & Kaliteevski, M. A. (2019). Revising of the Purcell effect in periodic metal-dielectric structures: the role of absorption. Scientific Reports, 9(1), Article 9604. https://doi.org/10.1038/s41598-019-46071-5

Periodic metal-dielectric structures attract substantial interest since it was previously proposed that the spontaneous emission amplification rates (the Purcell factor) in such structures can reach enormous values up to 105. However, the role of abs... Read More about Revising of the Purcell effect in periodic metal-dielectric structures: the role of absorption.

Identifying the Factors That Lead to PLQY Enhancement in Diluted TADF Exciplexes Based on Carbazole Donors (2019)
Journal Article
Colella, M., Danos, A., & Monkman, A. P. (2019). Identifying the Factors That Lead to PLQY Enhancement in Diluted TADF Exciplexes Based on Carbazole Donors. Journal of Physical Chemistry C, 123(28), 17318-17324. https://doi.org/10.1021/acs.jpcc.9b03538

Here we compare the effects of solid-state dilution on the photophysical and electrical performance of three TADF exciplexes based on carbazole containing donors with a high-performance acceptor PO-T2T. We observe intrinsically different photophysica... Read More about Identifying the Factors That Lead to PLQY Enhancement in Diluted TADF Exciplexes Based on Carbazole Donors.

Delayed Blue Fluorescence via Upper-triplet State Crossing from C-C Bonded Donor-Acceptor Charge-Transfer Molecules with Azatriangulene cores (2019)
Journal Article
Ward, J., Kukhta, N., Dos Santos, P., Congrave, D., Batsanov, A., Monkman, A., & Bryce, M. (2019). Delayed Blue Fluorescence via Upper-triplet State Crossing from C-C Bonded Donor-Acceptor Charge-Transfer Molecules with Azatriangulene cores. Chemistry of Materials, 31(17), 6684-6695. https://doi.org/10.1021/acs.chemmater.9b01184

We report the synthesis and structural and photophysical characterization of two series of molecules with functionalized azatriangulene electron donor cores and three pendant electron acceptor units. The presented donor and acceptor units are joined... Read More about Delayed Blue Fluorescence via Upper-triplet State Crossing from C-C Bonded Donor-Acceptor Charge-Transfer Molecules with Azatriangulene cores.

Electroabsorption Spectroscopy as a Tool to Probe Charge-Transfer and State Mixing in Thermally-Activated Delayed Fluorescence Emitters (2019)
Journal Article
De Sa Pereira, D., Menelaou, C., Danos, A., Marian, C. M., & Monkman, A. P. (2019). Electroabsorption Spectroscopy as a Tool to Probe Charge-Transfer and State Mixing in Thermally-Activated Delayed Fluorescence Emitters. Journal of Physical Chemistry Letters, 10(12), 3205-3211. https://doi.org/10.1021/acs.jpclett.9b00999

Solid-state electroabsorption is demonstrated as a powerful tool to probe the charge-transfer (CT) character and state mixing in the low energy optical transitions of two structurally similar thermally-activated delayed fluorescent (TADF) materials w... Read More about Electroabsorption Spectroscopy as a Tool to Probe Charge-Transfer and State Mixing in Thermally-Activated Delayed Fluorescence Emitters.

Intramolecular Dimerization Quenching of Delayed Emission in Asymmetric D-D’-A TADF Emitters (2019)
Journal Article
Woon, K. L., Yi, C., Pan, K., Etherington, M. K., Wu, C., Wong, K., & Monkman, A. P. (2019). Intramolecular Dimerization Quenching of Delayed Emission in Asymmetric D-D’-A TADF Emitters. Journal of Physical Chemistry C, 123(19), 12400-12410. https://doi.org/10.1021/acs.jpcc.9b01900

Understanding the excited-state dynamics and conformational relaxation in thermallyactivated delayed fluorescence (TADF) molecules, including conformations that potentially support intramolecular through-space charge transfer, can open new avenues fo... Read More about Intramolecular Dimerization Quenching of Delayed Emission in Asymmetric D-D’-A TADF Emitters.

Persistent Dimer Emission in Thermally Activated Delayed Fluorescence Materials (2019)
Journal Article
Etherington, M. K., Kukhta, N. A., Higginbotham, H. F., Danos, A., Bismillah, A. N., Graves, D. R., …Monkman, A. P. (2019). Persistent Dimer Emission in Thermally Activated Delayed Fluorescence Materials. Journal of Physical Chemistry C, 123(17), 11109-11117. https://doi.org/10.1021/acs.jpcc.9b01458

We expose significant changes in emission color of carbazole-based thermally activated delayed fluorescence (TADF) emitters that arise through the presence of persistent dimer states in thin films and organic light-emitting diodes(OLEDs). Direct phot... Read More about Persistent Dimer Emission in Thermally Activated Delayed Fluorescence Materials.

Less Is More: Dilution Enhances Optical and Electrical Performance of a TADF Exciplex (2019)
Journal Article
Colella, M., Danos, A., & Monkman, A. P. (2019). Less Is More: Dilution Enhances Optical and Electrical Performance of a TADF Exciplex. Journal of Physical Chemistry Letters, 10(4), 793-798. https://doi.org/10.1021/acs.jpclett.8b03646

A surprising yet highly practical approach to improve the performance of a TADF exciplex blend is reported. Using the TSBPA donor and PO-T2T acceptor to form an exciplex, we are able to blue shift the emission, increase PLQY from 58 to 80%, and incre... Read More about Less Is More: Dilution Enhances Optical and Electrical Performance of a TADF Exciplex.