Oxygen sensing capabilities of a series luminescent zirconium-based porphyrinic metal–organic frameworks (MOFs) (PCN-222, PCN-223, and PCN-224) have been investigated. Design experiments allowed identification the most sensitive material, PCN-224 MOF. In this luminescence in air is quenched by up to 7.3-fold with bimolecular quenching constant kq 56,000 Pa–1 s–1, which significantly above previ...

Solar-driven water splitting for green hydrogen production has been prospected as an auspicious technology to achieve sustainable energy generation by shifting towards renewable and zero-carbon emission fuels. Recently, N-rich C3N5 allotropes are emerging surpass the intrinsic drawbacks of g-C3N4, which rapid recombination photogenerated charge carriers poor visible light absorption, resulting ...

The metal-to-ligand charge transfer (MLCT) excited states of two related heteroleptic Ru(ii) compounds [Ru(bpy)2(deeb)](2+) and [Ru(bpy)2(deebq)](2+), where bpy is 2,2'-bipyridine, deeb is 4,4'-(CO2CH2CH3)2-2,2'-bipyridine and deebq is 4,4'-(CO2CH2CH3)2-2,2'-biquinoline, were characterized in fluid acetonitrile by temperature dependent photoluminescence spectroscopies as well as quenching by io...

In recent years, interest in using lithium-ion (Li-ion) batteries as power sources for a wide range of devices (particularly portable devices) has grown significantly. There is thus a real need to understand at a fundamental level a wide range of battery performance criteria (energy density, power density, safety, durability, cost). Our working group considered how to model the fundamental elec...

Artificially mediated linear (methylviologen) and cyclic (phenazine methosulfate) electron transport induced zeaxanthin-dependent and independent (constitutive) nonphotochemical quenching in osmotically shocked chloroplasts of pea (Pisum sativum L. cv Oregon). Nonphotochemical quenching was quantitated as Stern-Volmer quenching (SV(N)) calculated as (F(m)/F'(m))-1 where F(m) is the fluorescence...