Photophysical properties of tetrabutylammonium metal chlorides with different inorganic frameworks

Abstract

Single crystals of (TBA)PbCl3, (TBA)2Sb2Cl8, (TBA)3Bi2Cl9 and (TBA)SnCl5·2EtOH (TBA= tetrabutylammonium, EtOH=Ethanol) with luminescence centres of self-trapped excitons (STEs), TBA+, TBA+ and co-emission of STEs and TBA+, respectively, were synthesised. This...

Glass Disorder Modulated Luminescence in Zero-Dimensional Antimony-Chloride Coplanar Dimers for Optical Anti-counterfeiting

“…Dimeric metal halides have been less studied than monomeric metal halides. The highly symmetric cis-dimer [Sb 2 X 8 ] 2− lacks luminescent properties, whereas the trans-dimer [Sb 2 X 8 ] 2− can exhibit near-infrared emission. , However, for [Sb 2 X 7 ] − , we have not found studies on its luminescent properties.…”

“…However, a new peak, located at around 500 nm, begins to occur and overlap with the 585 nm emission during the third cycle for T-RT, which originates from the emission of TBA (Figure S13). This indicates these heating−cooling processes create defects such as TBA interstitials, etc., which should be alleviated to further improve the reliability of anti-counterfeiting in the future.…”

“…Among these configurations, pyramidal Sb-based metal halides have received extensive attention due to their unique optical properties, including near-unity photoluminescence quantum efficiencies, as well as structural and luminescence tunability upon stimulation . Pyramidal Sb-based metal halides contain inorganic framework structures like monomeric [SbX 5 ] 2− , cis- and trans-dimers [Sb 2 X 8 ] 2− , and dimeric [Sb 2 X 7 ] − (X = Cl, Br, I), of which the stimulus response of [SbX 5 ] 2− is the most extensively studied. The luminescent color of [SbX 5 ] 2− can be tuned by modifying the shape of the polyhedron , or through the removal/introduction of solvent molecules such as water, − ethanol, , N , N -dimethylformamide, and acetonitrile .…”

Blue-Light-Excitable Red-Emitting Organic Antimony Halides as a Reversible Humidity Sensor

“…Similar structure as compound 1 has been reported previously. 28 enabling it as an efficient optical sensor for humidity. To the best of our knowledge, there are currently few reports of organic antimony halides as reversible optical humidity sensors.…”