Chain-like uranyl-coordination polymer as a bright green light emitter for sensing and sunlight driven photocatalysis

Abstract

<p>A new uranyl-organic framework (UOF) has been designed and solvothermally synthesized employing succinic acid and 1,10-phenanthroline (phen) as ligands. The obtained compound with formula [U2(phen)(succ)0.5(OH)(O)4(μ3-O)(H2O)]∙H2O (UNSL-1), is classified as 1D...</p>

Chain, Network and Framework Formation in Uranyl Ion Complexes with 1,1′‐Biphenyl‐3,3′,4,4′‐Tetracarboxylate

“…Taking a broader viewpoint, an eclectic selection from the recent literature [13,[48][49][50][51][52][53] illustrates that the solid state coordination chemistry of uranyl carboxylates continues to be an active area of research concerned with a variety of possible applications. In our own work in this area, largely focussed on anionic coordination polymers, it has been apparent that hydrogen bonding interactions can have a major influence on the form of the complexes and even upon the coordination sphere of the uranyl ion.…”

Highlighting Recent Crystalline Engineering Aspects of Luminescent Coordination Polymers Based on F-Elements and Ditopic Aliphatic Ligands

“…Moreover, studies of An-CPs based on uranyl or thorium ions have been explored in the last decade, mostly due to their potential applications as light emitters for sensing and photocatalysis, and the variety of novel achieved architectures [22,[40][41][42][43][44][45][46][47][48][49]. Furthermore, the rational combination of O-donor with the uranyl cation [UO 2 ] 2+ coordination modes has led to the formation of an important number of new organic-inorganic connectivity with different dimensionalities and nuclearities of uranyl-centered building units [50][51][52][53][54].…”

“…In this case, we can highlight the UNSL-1 (Universidad Nacional de San Luis) compound, [(UO 2 ) 2 (phen)(succ) 0.5 (OH) (µ 3 -O)(H 2 O)]•H 2 O, which corresponds to a 1D coordination polymer formed by tetramer units of uranyl ions, decorated by coordinated 1,10-phenanthroline molecules and connected by succinate ligands into the [-1 0 1] direction [22]. The phen plays the role of a suitable antenna molecule to store UV energy and then transfer it to the uranyl ions, yielding a bright green emission into the visible region (see Figure 6).…”

“…Moreover, the use of metallic connectors from 4f and 5f metals allows the development of materials with unique optical properties derived from their pure color emission, fine line f-transitions, and variable lifetime values depending on the desirable applications [12,15,22,23]. Additionally, the high coordination numbers and the oxophilic nature of these metallic centers [24,25] allow us to combine these ions with flexible carboxylate aliphatic ligands and build a "toolbox" to construct families of novel crystalline structures [26].…”