We aim to investigate the effect of adding hydrophobic alkyl chains substituents to unsymmetrical free base tetra-phenyl porphyrins used for the preparation of dye sensitised solar cells (DSSC). We have used two different unsymmetrical meso-tetraphenyl substituted free base porphyrins attending to two objectives: (1) to observe how the substitution of three para positions of the meso-phenyl groups with hydrophobic alkyl chains influences the formation of molecular aggregates onto the semiconductor nanoparticles and (b) to deduce the influence that the substitution exerts over the e TiO2 /electrolyte + recombination reaction in operating devices. To achieve these goals we have focussed on the study of the electron transfer processes that take place at the different interfaces of the photovoltaic device using electrochemistry, steady-state and time resolved spectroscopic techniques.

It's a wrap! The inclusion of [Rh(nbd)2]BF4 (nbd=norbornadiene) in a deep‐cavity cavitand produces a catalytically active species that promotes the hydrogenation of norbornadiene to norbornene (see picture). The structure of the cavitand acts as a second‐sphere ligand and modifies the stability, selectivity, and reactivity observed for the free organometallic complex in solution.

Effects of atomic layer deposited thin films on dye sensitized solar cell performance J. Vac. Sci. Technol. A 30, 01A157 (2012); 10.1116/1.3670397 Double-layer porous Ti O 2 electrodes for solid-state dye-sensitized solar cells

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[structure: see text] A hybrid cavitand-resorcin[4]arene receptor capable of displaying pH-modulated binding affinity toward trimethylalkylammonium ions is proposed as an alternative to the low selectivity exhibited by other receptors used in supramolecular fluorescent sensor systems for choline.