authors |
Delgado-Pinar, E; Costa, AL; Goncalves, IS; Pineiro, M; Pillinger, M; de Melo, JSS |
nationality |
International |
journal |
JOURNAL OF PHYSICAL CHEMISTRY C |
keywords |
LAYERED DOUBLE HYDROXIDES; HYBRID SOLAR-CELLS; SUPRAMOLECULAR ORGANIZATION; PHOTOPHYSICS; DYNAMICS; OLIGOTHIOPHENES; SPECTROSCOPY; FLUORESCENT; SURFACTANT; LIFETIMES |
abstract |
The synthesis, electronic spectral, and photo-physical properties of a new bithiophene derivative, (2,2'-bithiophene)-3,5,5'-trisulfonic acid, alpha 2-SO3H, were investigated in organic or aqueous solution, in neat oil form, and in the solid state by cointercalation with different amounts of the surfactant 1-heptanesulfonate (HS) into a layered double hydroxide (LDH). In solution the fluorescence quantum yield (phi(F)) of alpha 2-SO3H increases by 1 order of magnitude when compared to the unsubstituted bithiophene (alpha 2) counterpart. However, the most dramatic change is obtained when alpha 2-SO3H is incorporated with HS into a Zn,Al-LDH, where values of phi(F) up to 58% are obtained in comparison with values of 4% for neat alpha 2-SO3H (as an oil) and 2% for an LDH containing only alpha 2-SO3H. In the solid state (LDH), in addition to the monomeric form of alpha 2-SO3H, H- and other types of aggregates are present, which are found to be dependent on the percentage HS content. Time-resolved fluorescence studies further rationalize this behavior with single and double exponential decays mirroring the contributions of monomers and aggregates. The study validates a strategy of increasing fluorescence in the solid state by introduction of electrodonating groups and isolation of the alpha 2-SO3H units within the LDH structure with an appropriate surfactant (HS). |
publisher |
AMER CHEMICAL SOC |
issn |
1932-7447 |
isbn |
1932-7455 |
year published |
2021 |
volume |
125 |
issue |
15 |
beginning page |
8294 |
ending page |
8303 |
digital object identifier (doi) |
10.1021/acs.jpcc.1c00240 |
web of science category |
10 |
subject category |
Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary |
unique article identifier |
WOS:000644438400028
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ciceco authors
impact metrics
journal analysis (jcr 2019):
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journal impact factor |
4.189 |
5 year journal impact factor |
4.404 |
category normalized journal impact factor percentile |
64.576 |
dimensions (citation analysis):
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altmetrics (social interaction):
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