Dr Fernando Dias' Outputs (7)

Synthesis and investigation of intra-molecular charge transfer state properties of novel donor-acceptor-donor pyridine derivatives: the effects of temperature and environment on molecular configurations and the origin of delayed fluorescence (2015)
Journal Article
Aydemir, M., Haykir, G., Turksoy, F., Gumus, S., Dias, F., & Monkman, A. (2015). Synthesis and investigation of intra-molecular charge transfer state properties of novel donor-acceptor-donor pyridine derivatives: the effects of temperature and environment on molecular configurations and the origin of delayed fluorescence. Physical Chemistry Chemical Physics, 17(38), 25572-25582. https://doi.org/10.1039/c5cp03937a

A novel series of donor-acceptor-donor (D-A-D) structured pyridine derivatives were synthesised and detailed photo-physical investigations were made using mainly steady-state and time-resolved spectroscopy techniques at varying temperatures. The inve... Read More about Synthesis and investigation of intra-molecular charge transfer state properties of novel donor-acceptor-donor pyridine derivatives: the effects of temperature and environment on molecular configurations and the origin of delayed fluorescence.

Effect of Singlet Triplet Recycling in the Charge Transfer State Manifold and Molecular Geometry on Thermally Activated Delayed Fluorescence (2015)
Journal Article
Dias, F., Graves, D., Jankus, V., & Monkman, A. (2015). Effect of Singlet Triplet Recycling in the Charge Transfer State Manifold and Molecular Geometry on Thermally Activated Delayed Fluorescence. SID Symposium Digest of Technical Papers, 46(1), https://doi.org/10.1002/sdtp.10440

Generating Light from Upper Excited Triplet States: A Contribution to the Indirect Singlet Yield of a Polymer OLED, Helping to Exceed the 25% Singlet Exciton Limit (2015)
Journal Article
Jankus, V., Aydemir, M., Dias, F. B., & Monkman, A. P. (2016). Generating Light from Upper Excited Triplet States: A Contribution to the Indirect Singlet Yield of a Polymer OLED, Helping to Exceed the 25% Singlet Exciton Limit. Advanced Science, 3(1), Article 1500221. https://doi.org/10.1002/advs.201500221

The mechanisms by which light is generated in an organic light emitting diode have slowly been elucidated over the last ten years. The role of triplet annihilation has demonstrated how the “spin statistical limit” can be surpassed, but it cannot acco... Read More about Generating Light from Upper Excited Triplet States: A Contribution to the Indirect Singlet Yield of a Polymer OLED, Helping to Exceed the 25% Singlet Exciton Limit.

Spectroscopic studies of different poly3hexylthiophene chain environments in a polyfluorene matrix (2015)
Journal Article
Santos, P. L., Cury, L. A., Dias, F. B., & Monkman, A. P. (2016). Spectroscopic studies of different poly3hexylthiophene chain environments in a polyfluorene matrix. Journal of Luminescence, 172, 118-123. https://doi.org/10.1016/j.jlumin.2015.11.045

Optical properties of blends made of poly(9,9-dioctyl-fluorene-2,7-diyl) (PFO) and poly(3-hexylthiophene-2,5-diyl) (P3HT) were investigated and compared to those of poly(9,9-dioctylfluorene-alt-bithiophene) (F8T2) by steady state optical spectroscopy... Read More about Spectroscopic studies of different poly3hexylthiophene chain environments in a polyfluorene matrix.

High efficiency OLEDs based on anthracene derivatives: The impact of electron donating and withdrawing group on the performance of OLED (2015)
Journal Article
Aydemir, M., Haykır, G., Battal, A., Jankus, V., Sugunana, S., Dias, F., …Monkman, A. (2016). High efficiency OLEDs based on anthracene derivatives: The impact of electron donating and withdrawing group on the performance of OLED. Organic Electronics, 30, https://doi.org/10.1016/j.orgel.2015.11.026

Kinetics of thermal-assisted delayed fluorescence in blue organic emitters with large singlet–triplet energy gap (2015)
Journal Article
Dias, F. B. (2015). Kinetics of thermal-assisted delayed fluorescence in blue organic emitters with large singlet–triplet energy gap. Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 373(2044), Article 20140447. https://doi.org/10.1098/rsta.2014.0447

The kinetics of thermally activated delayed fluorescence (TADF) is investigated in dilute solutions of organic materials with application in blue light-emitting diodes (OLEDs). A method to accurately determine the energy barrier (ΔEa) and the rate of... Read More about Kinetics of thermal-assisted delayed fluorescence in blue organic emitters with large singlet–triplet energy gap.

Inter/intrachain interactions behind the formation of charge transfer states in polyspirobifluorene: A case study for complex excited-state dynamics in different polarity index solvents (2015)
Journal Article
Aydemir, M., Jankus, V., Dias, F. B., & Monkman, A. P. (2015). Inter/intrachain interactions behind the formation of charge transfer states in polyspirobifluorene: A case study for complex excited-state dynamics in different polarity index solvents. Journal of Physical Chemistry C, 119(11), 5855-5863. https://doi.org/10.1021/jp512467g

In this work, we demonstrate the complex excited-state nature of the conjugated polymer, polyspirobifluorene (PSBF), using steady-state and time-resolved spectroscopy techniques to understand the origin of excited charge transfer state (CT) formation... Read More about Inter/intrachain interactions behind the formation of charge transfer states in polyspirobifluorene: A case study for complex excited-state dynamics in different polarity index solvents.