The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: 4-(p-Tolyl)-2,2:6,2-terpyridine( cas:89972-77-0 ) is researched.Formula: C22H17N3.Collin, Jean Paul; Guillerez, Stephane; Sauvage, Jean Pierre; Barigelletti, Francesco; De Cola, Luisa; Flamigni, Lucia; Balzani, Vincenzo published the article 《Photoinduced processes in dyads and triads containing a ruthenium(II)-bis(terpyridine) photosensitizer covalently linked to electron donor and acceptor groups》 about this compound( cas:89972-77-0 ) in Inorganic Chemistry. Keywords: photosensitizer ruthenium terpyridine electron donor acceptor; electrochem ruthenium terpyridine electron donor acceptor; luminescence ruthenium terpyridine electron donor acceptor. Let’s learn more about this compound (cas:89972-77-0).
Five supramol. systems containing the Ru(ttp)22+ photosensitizer (P) covalently linked to an electron acceptor (A), MV2+, and/or an electron donor (D), PTZ or DPAA, were synthesized; (ttp = 4′-p-tolyl-2,2′:6′,2”-terpyridine, MV2+ = Me viologen, PTz = phenotiazine, DPAA = di-p-anisylamine). In the D-P-A triads the electron donor and acceptor groups are linked in opposite positions with respect to the photosensitizer. The spectroscopic properties (room-temperature absorption spectra, emission spectra and lifetimes at 90-200 K, and transient absorption spectra and lifetimes at 150 K) and the (room-temperature) electrochem. behavior of the supramol. systems and of their components were investigated. At 90 K, where the solvent is frozen, no quenching of the photosensitizer luminescence is observed for all the supramol. systems. At 150 K, where the solvent is fluid, the results obtained were as follows. In the PTZ-Ru(ttp)22+ dyad, neither quenching of the photosensitizer luminescence nor formation of oxidized donor were observed In the DPAA-Ru(ttp)22+ dyad, luminescence quenching and transient formation of the oxidized donor took place. For the Ru(ttp)22+-MV2+ dyad, transient formation of the reduced acceptor was observed, but the lifetime of the photosensitizer luminescence increases, indicating that charge recombination leads back to the excited photosensitizer. The PTZ-Ru(tpp)22+ triad behaves as the Ru(ttp)22+-MV2+ dyad. For the DPAA-Ru(ttp)22+-MV2+ triad, strong luminescence quenching is observed, and transient absorption spectroscopy shows that charge separation is followed by a fast charge recombination reaction (τ < 100 ns). Thermodn. and kinetic aspects of the photoinduced electron-transfer processes are discussed. Although many compounds look similar to this compound(89972-77-0)Formula: C22H17N3, numerous studies have shown that this compound(SMILES:CC1=CC=C(C2=CC(C3=NC=CC=C3)=NC(C4=NC=CC=C4)=C2)C=C1), has unique advantages. If you want to know more about similar compounds, you can read my other articles.
Reference:
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI