Author(s): Lapointe V; Majewski MB;

The self-assembly of CsPbCl3 perovskite nanocrystals and their Mn2+-enriched analogs into supercrystals is reported. Increasing Mn2+ content in the nanocrystals leads to formation of larger, increasingly uniform cubic supercrystals that eventually become rod-like with higher photoluminescence quantum yields.

Article GUID: 39347586

Author(s): Singh Z; Chiong JD; Ricardo-Noordberg JF; Kamal S; Majewski MB;

A copper(I) donor-chromophore-acceptor triad bearing 1,8-napthalenemonoimide as the electron acceptor and triphenylamine as the electron donor was synthesized. Photophysical and electrochemical characterization suggest stepwise photoinduced charge separation upon excitation of the copper(I)-based metal-to-ligand charge transfer (MLCT) transition. Analyses ...

Article GUID: 39258478

Author(s): Cigana B; Lapointe V; Majewski MB; Forgione P;

A library of 2,5-furan-based phenylene/thiophene oligomers were synthesized starting from 5-bromofurfural, a derivative of biomass-derived furfural. Varied electronic groups are coupled onto the furan motif, followed by the installation of a phenylene or thiophene central linker through a one-pot Pd-catalyzed decarboxylative cross-coupling reaction. Resul ...

Article GUID: 38808994

Author(s): Lapointe V; Green PB; Chen AN; Buonsanti R; Majewski MB;

Superlattice formation afforded by metal halide perovskite nanocrystals has been a phenomenon of interest due to the high structural order induced in these self-assemblies, an order that is influenced by the surface chemistry and particle morphology of the starting building block material. In this work, we report on the formation of superlattices from alu ...

Article GUID: 38516096

Author(s): Singh Z; Chiong JD; Kamal S; Majewski MB;

Dye-sensitized photoelectrodes may be used as heterogeneous components for fuel-forming reactions in photoelectrochemical cells. There has been increasing interest in developing Earth-abundant cheaper photosensitizers based on first-row transition metals. We describe here the synthesis, characterization, and study of the ground and excited state propertie ...

Article GUID: 38497406

Author(s): Lapointe V; Imperiale CJ; Chengadu S; Pomilio CM; Ganesh M; Kéna-Cohen S; Majewski MB;

We report two photonic crystal-perovskite nanocrystal microbead hybrids with photoluminescence matching that of the parent nanocrystals but with increased photoluminescence quantum yields. Time-resolved photoluminescence spectroscopy quantifies the radiative enhancement afforded by the photonic environment of the microbeads. The reported hybrids also demo ...

Article GUID: 37548908

Author(s): Yarur Villanueva F; Green PB; Qiu C; Ullah SR; Buenviaje K; Howe JY; Majewski MB; Wilson MWB;

Kesterite Cu2ZnSnS4 (k-CZTS) nanocrystals have received attention for their tunable optoelectronic properties, as well as the earth abundance of their constituent atoms. However, the phase-pure synthesis of these quaternary NCs is challenging due to their polymorphism, as well as the undesired fo ...

Article GUID: 34705409

Author(s): Zhang X; Wasson MC; Shayan M; Berdichevsky EK; Ricardo-Noordberg J; Singh Z; Papazyan EK; Castro AJ; Marino P; Ajoyan Z; Chen Z; Islamoglu T; Howarth AJ; Liu Y; Majewski MB; Katz MJ; Mondloch JE; Farha OK;

Porphyrins are important molecules widely found in nature in the form of enzyme active sites and visible light absorption units. Recent interest in using these functional molecules as building blocks for the construction of metal-organic frameworks (MOFs) have rapidly increased due to the ease in ...

Article GUID: 33678810

Author(s): Singh Z, Donnarumma PR, Majewski MB

Copper(II)-based electrocatalysts for water oxidation in aqueous solution have been studied previously, but photodriving these systems still remains a challenge. In this work, a bis(diimine)copper(I)-based donor-chromophore-acceptor system is synthesized and applied as the light-harvesting component of a photoanode. This molecular assembly was integrated ...

Article GUID: 32909755