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Dr Lars- Palsson's Outputs (64)

Experimental and Theoretical Studies of the Photophysical Properties of 2- and 2,7-Functionalized Pyrene Derivatives (2011)
Journal Article
Crawford, A., Dwyer, A., Liu, Z., Steffen, A., Beeby, A., Pålsson, L., …Marder, T. (2011). Experimental and Theoretical Studies of the Photophysical Properties of 2- and 2,7-Functionalized Pyrene Derivatives. Journal of the American Chemical Society, 133(34), 13349-13362. https://doi.org/10.1021/ja2006862

Pyrene derivatives substituted at the 2- and 2,7-positions are shown to display a set of photophysical properties different from those of derivatives substituted at the 1-position. It was found that, in the 2- and 2,7-derivatives, there was little in... Read More about Experimental and Theoretical Studies of the Photophysical Properties of 2- and 2,7-Functionalized Pyrene Derivatives.

Synthesis, Excited State Dynamics, and Optical Characteristics of Oligophenyl-Based Swivel Cruciforms in Solution and Solid State. (2010)
Journal Article
Palsson, L., Nehls, B., Galbrecht, F., Coombs, B., Dias, F., Farrell, T., …Monkman, A. (2010). Synthesis, Excited State Dynamics, and Optical Characteristics of Oligophenyl-Based Swivel Cruciforms in Solution and Solid State. Journal of Physical Chemistry B (Soft Condensed Matter and Biophysical Chemistry), 114(40), 12765-12776. https://doi.org/10.1021/jp1028883

Efficient Intramolecular Charge Transfer in Oligoyne-Linked Donor–π–Acceptor Molecules (2009)
Journal Article
Pålsson, L., Wang, C., Batsanov, A., King, S., Beeby, A., Monkman, A., & Bryce, M. (2009). Efficient Intramolecular Charge Transfer in Oligoyne-Linked Donor–π–Acceptor Molecules. Chemistry - A European Journal, 16(5), 1470-1479. https://doi.org/10.1002/chem.200902099

Studies are reported on a series of triphenylamine–(C[TRIPLE BOND]C)n–2,5-diphenyl-1,3,4-oxadiazole dyad molecules (n=1–4, 1, 2, 3 and 4, respectively) and the related triphenylamine-C6H4–(C[TRIPLE BOND]C)3–oxadiazole dyad 5. The oligoyne-linked D–π–... Read More about Efficient Intramolecular Charge Transfer in Oligoyne-Linked Donor–π–Acceptor Molecules.

Two-photon absorption and photoluminescence of europium based emissive probes for bioactive systems (2007)
Journal Article
Palsson, L., Pal, R., Murray, B., Parker, D., & Beeby, A. (2007). Two-photon absorption and photoluminescence of europium based emissive probes for bioactive systems. Dalton Transactions, 2007(48), 5726-5734. https://doi.org/10.1039/b710717j

Observation of two-photon excitation (760 nm) and emission of two responsive water soluble europium complexes is reported with cross-sections of up to 2 GM. Two-photon excitation spectra have also been measured, acquisition being achieved by the use... Read More about Two-photon absorption and photoluminescence of europium based emissive probes for bioactive systems.

Intramolecular charge transfer assisted by conformational changes in the excited state of fluorene-dibenzothiophene-S,S-dioxide co-oligomers (2006)
Journal Article
Dias, F., Pollock, S., Hedley, G., Palsson, L., Monkman, A., Perepichka, I., …Bryce, M. (2006). Intramolecular charge transfer assisted by conformational changes in the excited state of fluorene-dibenzothiophene-S,S-dioxide co-oligomers. Journal of Physical Chemistry B (Soft Condensed Matter and Biophysical Chemistry), 110(39), 19329-19339. https://doi.org/10.1021/jp0643653

The strong solvatochromism observed for two fluorene-dibenzothiophene-S,S-dioxide oligomers in polar solvents has been investigated using steady-state and time-resolved fluorescence techniques. A low-energy absorption band, attributed to a charge-tra... Read More about Intramolecular charge transfer assisted by conformational changes in the excited state of fluorene-dibenzothiophene-S,S-dioxide co-oligomers.

Polarized optical spectroscopy applied to investigate two poly(phenylene-vinylene) polymers with different side chain structures (2006)
Journal Article
Palsson, L., Vaughan, H., & Monkman, A. (2006). Polarized optical spectroscopy applied to investigate two poly(phenylene-vinylene) polymers with different side chain structures. The Journal of Chemical Physics, 125, 164701-164707. https://doi.org/10.1063/1.2354473

Two related poly(phenylene-vinylene) (PPV) light-emitting polymers have been investigated by means of polarized optical spectroscopy. The purpose of the investigation was to investigate the nature of the interactions in thin films and to examine what... Read More about Polarized optical spectroscopy applied to investigate two poly(phenylene-vinylene) polymers with different side chain structures.

Guest-host interactions between dichroic dyes and anisotropic hosts. (2006)
Journal Article
Palsson, L., Vaughan, H., Smith, A., Szablewski, M., Cross, G., Roberts, T., …Bloor, D. (2006). Guest-host interactions between dichroic dyes and anisotropic hosts. Journal of Luminescence, 117(1), 113-122. https://doi.org/10.1016/j.jlumin.2005.03.017

The guest–host interaction between dichroic dyes and anistropic hosts has been investigated by means of optical spectroscopy. Two different TCNQ adducts; 2-{4-[(2,6-dimethylmorpholin-4-yl)(4-metylpiperidin-1-yl)methylene]cyclohexa-2,5-dien-1-ylidene}... Read More about Guest-host interactions between dichroic dyes and anisotropic hosts..

Matrix dependence of blue light emission from a novel NH2-functionalized dicyanoquinodimethane derivative (2006)
Journal Article
Szablewski, M., Bloor, D., Kagawa, Y., Mosurkal, R., Cole, J., Clark, S., …Palsson, L. (2006). Matrix dependence of blue light emission from a novel NH2-functionalized dicyanoquinodimethane derivative. Journal of Physical Organic Chemistry, 19(3), 206-213. https://doi.org/10.1002/poc.1020

The reactions of primary and secondary amines with (cyclohexa-2,5-diene-1,4-diylidene)-dimalononitrile (TCNQ) lead to mono- and disubstituted dicyanoquinodimethane derivatives and fluorescence emission has been observed for several of these compounds... Read More about Matrix dependence of blue light emission from a novel NH2-functionalized dicyanoquinodimethane derivative.

Absolute measurements of photoluminescence quantum yields of solutions using an integrating sphere (2006)
Journal Article
Porrès, L., Holland, A., -O. Pålsson, L., Monkman, A., Kemp, C., & Beeby, A. (2006). Absolute measurements of photoluminescence quantum yields of solutions using an integrating sphere. Journal of Fluorescence, 16(2), 267-273. https://doi.org/10.1007/s10895-005-0054-8

We demonstrate that absolute measurements of the photoluminescence quantum yield of solutions can be made using an integrating sphere and a conventional fluorimeter. With this method the need for measurements against a luminescence standard is overco... Read More about Absolute measurements of photoluminescence quantum yields of solutions using an integrating sphere.

Molecular wires comprising pi-extended ethynyl- and butadiynyl-2,5-diphenyl-1,3,4 oxidiazole derivatives: synthesis, redox, structural and optoelectronic properties (2006)
Journal Article
Wang, C., Pålsson, L., Batsanov, A., & Bryce, M. (2006). Molecular wires comprising pi-extended ethynyl- and butadiynyl-2,5-diphenyl-1,3,4 oxidiazole derivatives: synthesis, redox, structural and optoelectronic properties. Journal of the American Chemical Society, 128(11), 3789-3799. https://doi.org/10.1021/ja0577600

2,5-Diphenyl-1,3,4-oxadiazole (OXD) derivatives with terminal ethynyl- (4a,b) and butadiynyl- (8a,b) substituents have been synthesized in high yields. 2-Methyl-3,5-hexadiyn-2-ol has not been exploited previously in the synthesis of terminal butadiyn... Read More about Molecular wires comprising pi-extended ethynyl- and butadiynyl-2,5-diphenyl-1,3,4 oxidiazole derivatives: synthesis, redox, structural and optoelectronic properties.

Dibenzothiophene-S,S-dioxide-fluorene co-oligomers. Stable, highly-efficient blue emitters with improved electron affinity (2005)
Journal Article
Perepichka, I., Perepichka, I., Bryce, M., & Palsson, L. (2005). Dibenzothiophene-S,S-dioxide-fluorene co-oligomers. Stable, highly-efficient blue emitters with improved electron affinity. Chemical Communications, 2005(27), 3397-3399. https://doi.org/10.1039/B417717G

Incorporation of dibenzothiophene- S, S-dioxide units into conjugated fluorene oligomers changes the frontier orbital energy levels and presents an effective way to increase the electron affinity of these materials, which are highly fluorescent with... Read More about Dibenzothiophene-S,S-dioxide-fluorene co-oligomers. Stable, highly-efficient blue emitters with improved electron affinity.

Influence Of Molecular Weight On Self-organization, Uniaxial Alignment, And Surface Morphology Of Hairy-rodlike Polyfluorene In Thin Films (2004)
Journal Article
Knaapila, M., Kisko, K., Lyons, B., Stepanyan, R., Foreman, J., Seeck, O., …Monkman, A. (2004). Influence Of Molecular Weight On Self-organization, Uniaxial Alignment, And Surface Morphology Of Hairy-rodlike Polyfluorene In Thin Films. Journal of Physical Chemistry B (Soft Condensed Matter and Biophysical Chemistry), 108(30), 10711-10720. https://doi.org/10.1021/jp049067p

Diffraction analysis of highly ordered smectic supramolecules of conjugated rodlike polymers. (2003)
Journal Article
Knaapila, M., Torkkeli, M., Jokela, K., Kisko, K., Horsburgh, L., Palsson, L., …Serimaa, R. (2003). Diffraction analysis of highly ordered smectic supramolecules of conjugated rodlike polymers. Journal of Applied Crystallography, 36(3), 702-707. https://doi.org/10.1107/s0021889803003881

A small/wide-angle X-ray scattering and grazing incidence diffraction study of comb-shaped supramolecules of conjugated poly(2,5-pyridinediyl), acid dopant and hydrogen bonded amphiphilic side chains is reported. In solution, polymers are dissolved r... Read More about Diffraction analysis of highly ordered smectic supramolecules of conjugated rodlike polymers..

Local field and aggregation dependence of the micro- and macroscopic optical non-linearity of zwitterionic molecules (2003)
Journal Article
Cross, G., Hackman, N., Thomas, P., Szablewski, M., Pålsson, L., & Bloor, D. (2003). Local field and aggregation dependence of the micro- and macroscopic optical non-linearity of zwitterionic molecules. Optical Materials, 21(1-3), 29-37. https://doi.org/10.1016/s0925-3467%2802%2900108-8

When a dipolar-conjugated molecule can lower its energy through gaining aromaticity, there can be a quite dramatic evolution of its polarisation properties dependent on the local reaction field generated in its environment. We have studied conjugated... Read More about Local field and aggregation dependence of the micro- and macroscopic optical non-linearity of zwitterionic molecules.

Synthesis and excited state spectroscopy of tris (distyrylbenzenyl)amine-cored electroluminescent dendrimers (2002)
Journal Article
Palsson, L., Beavington, R., Frampton, M., Lupton, J., Magennis, S., Markham, J., …Samuel, I. (2002). Synthesis and excited state spectroscopy of tris (distyrylbenzenyl)amine-cored electroluminescent dendrimers. Macromolecules, 35(21), 7891-7901. https://doi.org/10.1021/ma011996g

An efficient strategy has been developed for the preparation of four generations of electroluminescent dendrimers that contain tris(distyrylbenzenyl)amine cores, stilbene dendrons, and tert-butyl surface groups. The synthesis involved coupling of ben... Read More about Synthesis and excited state spectroscopy of tris (distyrylbenzenyl)amine-cored electroluminescent dendrimers.