Lin, Ching-Yao published the artcilePreparation and Spectral, Electrochemical, and Photovoltaic Properties of Acene-Modified Zinc Porphyrins, Recommanded Product: 9,10-Diethynylanthracene, the publication is Journal of Physical Chemistry C (2010), 114(1), 687-693, database is CAplus.
Acene-modified Zn porphyrins (I; E = 1,4-phenylene, 1,4-naphthalenediyl, 9,10-anthacenediyl, 5,12-tetracenediyl, 6,13-pentacenediyl, denoted as LAC-1 to LAC-5, resp.) were prepared to study their absorption spectra, electrochem. properties, and photovoltaic properties. For the absorption spectral changes in THF, porphyrin B bands are red shifted and broadened from 449 to 501 nm for LAC-1 to LAC-3, showing the effect of addnl. Ï-conjugation. In contrast, the B bands of LAC-4 and LAC-5 are blue-shifted. The tetracenyl group of LAC-4 gives rise to absorption bands in between B and Q bands. However, the Q bands of LAC-1 to LAC-5 are systematically broadened and red shifted from 629 to 751 nm. By comparison, the absorption bands of LAC porphyrins on TiO2 films are broadened and slightly shifted. Fluorescence emission maxima of LAC porphyrins in THF are also systematically red shifted from LAC-1 to LAC-5. Cyclic voltammetry experiments in THF/TBAP show that the 1st reductions are systematically pos.-shifted from -1.16 to -0.85 V vs. SCE for LAC-1 to LAC-5, indicating the effect of increasing Ï-conjugation. As for the performance of DSSCs using LAC porphyrins, the overall efficiencies are LAC-1 (2.95%), LAC-2 (3.31%), LAC-3 (5.44%), LAC-4 (2.82%), and LAC-5 (0.10%). Overall efficiency of a LAC-3-sensitized solar cell is nearly twice of that of a LAC-1-sensitized solar cell and is â?1% overall efficiency of N719-sensitized solar cells under the same exptl. conditions. The conversion efficiency of incident photons to current (IPCE) experiments shows that the broadened absorption bands of LAC-3 effectively minimizes the gap between B and Q bands, contributing to the improved DSSC performance. The very poor performance of LAC-5 probably is caused by rapid nonradiative relaxation of the mol. in the singlet excited state.
Journal of Physical Chemistry C published new progress about 18512-55-5. 18512-55-5 belongs to naphthyridine, auxiliary class Alkynyl,Anthracene, name is 9,10-Diethynylanthracene, and the molecular formula is C18H10, Recommanded Product: 9,10-Diethynylanthracene.
Referemce:
https://en.wikipedia.org/wiki/1,8-Naphthyridine,
1,8-Naphthyridine | C8H6N2 – PubChem