Solvent co-assembly in lead-free perovskite scintillators for stable and large-area X-ray imaging?
Journal of Materials Chemistry A Pub Date: 2022-06-27 DOI: 10.1039/D2TA03468A
Abstract
Perovskite scintillators have emerged as good candidates for next-generation X-ray detectors due to their excellent scintillation efficiency and controllable properties by compositions. However, moisture stability and large-area X-ray imaging are still major concerns. Here, we report two 0D lead-free perovskite structures with different ionic arrangements formed by co-assembling solvent molecules with perovskite ions. Different solvent molecules of hydrogen oxide (H2O) and acetonitrile (CH3CN) were self-assembled into a crystal lattice to modulate the ion arrangements of two new single crystals 4-diethylaminobenzoic acid manganese(II) bromide hydrogen oxide ((DABA)2MnBr4·H2O) and 4-diethylaminobenzoic acid manganese(II) bromide acetonitrile ((DABA)2MnBr4·CH3CN). The solvent co-assembled perovskite single crystal exhibits excellent moisture stability under ambient conditions for one month without any encapsulation, and is a good candidate for a low-cost and high-performance scintillator. The multiple supramolecular interactions within the two single crystals offer efficient driving forces for self-assembly, and the excitons are better confined in the (DABA)2MnBr4·H2O crystals than that in (DABA)2MnBr4·CH3CN crystals, resulting in a higher photoluminescence (PL) quantum yield of 51%. The light yield of (DABA)2MnBr4·H2O to 120 keV can reach 28?333 photons MeV?1. In addition, constructed strong hydrogen bonds in (DABA)2MnBr4·H2O ensure good capability to suppress thermal PL quenching due to the reduced electron-phonon interactions. Large-area scintillators with a dimension size of 2.4 cm × 3.0 cm exhibit comparable X-ray imaging capability with spatial resolutions up to 5.0 lp mm?1, providing a new design route for the perovskite scintillator family.
Recommended Literature
- [1] An intermolecular C–H oxidizing strategy to access highly fused carbazole skeletons from simple naphthylamines? Christian K. Rank,Alexander W. Jones,Tatjana Wall,Patrick Di Martino-Fumo,Sarah Schr?ck,Markus Gerhards,Frederic W. PatureauChem. Commun., 2019,55, 13749-13752 10.1039/C9CC05240B
- [2] An artificial enzyme cascade amplification strategy for highly sensitive and specific detection of breast cancer-derived exosomes? Huiying Xu,Lu Zheng,Yu Zhou,Bang-Ce YeAnalyst, 2021,146, 5542-5549 10.1039/D1AN01071A
- [3] Acetyl group orientation modulates the electronic ground-state asymmetry of the special pair in purple bacterial reaction centers P. K. Wawrzyniak,M. T. P. Beerepoot,H. J. M. de Groot,F. BudaPhys. Chem. Chem. Phys., 2011,13, 10270-10279 10.1039/C1CP20213H
- [4] An atlas of endohedral Sc2S cluster fullerenes? Li-Hua Gan,Rui Wu,Jian-Lei Tian,Patrick W. FowlerPhys. Chem. Chem. Phys., 2017,19, 419-425 10.1039/C6CP07370K
- [5] An approach to C–N activation: coupling of arenesulfonyl hydrazides and arenesulfonyl chlorides with tert-amines via a metal-, oxidant- and halogen-free anodic oxidation?? M. Sheykhan,S. Khani,S. Shaabanzadeh,M. JoafshanGreen Chem., 2017,19, 5940-5948 10.1039/C7GC03141F
- [6] An insight into the hybridization mechanism of hairpin DNA physically immobilized on chemically modified graphenes Adeline Huiling Loo,Alessandra Bonanni,Martin PumeraAnalyst, 2013,138, 467-471 10.1039/C2AN36199J
- [7] Alternative mixtures to R-600a. Theoretical assessment and experimental energy evaluation of binary mixtures in a commercial cooler: Mélanges alternatifs au R-600a. évaluation théorique et évaluation énergétique expérimentale de mélanges binaires dans un refroidisseur commercial. DanielCalleja-Anta,DanielSánchez,LauraNebot-Andres,RamónCabello,RodrigoLlopis 10.1016/j.ijrefrig.2023.05.009
- [8] An all-solid-state asymmetric device based on a polyaniline hydrogel for a high energy flexible supercapacitor? Hamid Heydari,Mohammad B. GholivandNew J. Chem., 2017,41, 237-244 10.1039/C6NJ02266A
- [9] An atom efficient route to N-aryl and N-alkyl pyrrolines by transition metal catalysis? Supaporn Sawadjoon,Joseph S. M. SamecOrg. Biomol. Chem., 2011,9, 2548-2554 10.1039/C0OB00383B
- [10] Alumina coating on 5 V lithium cobalt fluorophosphate cathode material for lithium secondary batteries – synthesis and electrochemical properties? S. Amaresh,K. Karthikeyan,K. J. Kim,Y. S. LeeRSC Adv., 2014,4, 23107-23115 10.1039/C4RA02318H
Journal Name：Journal of Materials Chemistry A
research_products
-
CAS no.: 89640-58-4
![1,2,3,4,5,6-Hexahydro-[2,3]bipyridinyl-6-ol](https://ossimg.kuujia.com/scimg/1271000/1270529-38-8x500.png)
![N-(3-cyanothiolan-3-yl)-2-[(2,2,2-trifluoroethyl)sulfanyl]pyridine-4-carboxamide](https://ossimg.kuujia.com/scimg/1444500/1444113-98-7x500.png)
![2,2-Difluoro-3-[methyl(2-methylbutyl)amino]propanoic acid](https://ossimg.kuujia.com/scimg/2138500/2138166-62-6x500.png)
![2-(1H-indol-3-yl)-N-{[6-(thiophen-2-yl)-[1,2,4]triazolo[4,3-b]pyridazin-3-yl]methyl}acetamide](https://ossimg.kuujia.com/scimg/2034500/2034271-14-0x500.png)