Exploration of new chiral hybrid semiconducting palladium halide complexes: [(R)/(S)-2-Methylpiperazinediium]PdCl4 - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Materials Research Bulletin Année : 2023

Exploration of new chiral hybrid semiconducting palladium halide complexes: [(R)/(S)-2-Methylpiperazinediium]PdCl4

Résumé

Chiral organic-inorganic halogenometallate hybrids have attracted significant research interest in various fields from optoelectronic to photovoltaic devices. However, to this day the range of available chiral hybrid metal halides still remains limited. In this context, single crystals of organically templated chiral chloropalladate (II), [(R)/(S)-C5H14N2]PdCl4, have been synthesized. Each of the chiral molecular compound consists of (R) or (S)-2-methylpiperazinediium [C5H14N2](2+) cations and [PdCl4](2-) anions. The complexes, [(R)/(S)-C5H14N2]PdCl4 crystallize in the chiral space group P2(1)2(1)2(1) (No. 19), which exhibits the enantiomorphic crystal class 222 (D2). In the crystal structure, the [PdCl4](2-) anions are linked to the organic cations through N-H center dot center dot center dot Cl and C-H center dot center dot center dot Cl hydrogen bonds to form cation-anion-cation molecular units. The incorporation of a protonated (R) or (S)-2-methylpiperazine cations into the same inorganic halide systems leads to similar properties. The thermal analysis, optical and electric properties of [(R)-C5H14N2]PdCl4 (1) compound have been studied. The title compound [(R)-C5H14N2]PdCl4 (1) reveals thermal stability up to ca. 450 K. Besides, [(R)-C5H14N2]PdC(l)4 (1) shows semi-conducting behavior with an optical band gap of similar to 3.64 eV. The electric properties are investigated and the equivalent circuit is chosen and confirms the contribution of the grain and grain boundaries. The values of AC conductivities (10(-6) Omega(-1)cm(-1)) confirm the gap energy and the semiconducting character of the R enantiomer. The value of activation energy is determinated and shows the ionic conduction type. Such a chiral hybrid metal halide offers a viable strategy for the targeted design and synthesis of non-centrosymmetric metal halide materials for optoelectronic applications.
Fichier principal
Vignette du fichier
Salah et al. - 2023 - Exploration of New Chiral Hybrid Semiconducting Pa.pdf (1.59 Mo) Télécharger le fichier
ScienceDirect_files_12Jun2023_12-59-06.632.zip (2.84 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-04115714 , version 1 (12-06-2023)

Licence

Paternité - Pas d'utilisation commerciale

Identifiants

Citer

Fadhel Hajlaoui, Bochra Ben Salah, Karim Karoui, Nathalie Audebrand, Thierry Roisnel, et al.. Exploration of new chiral hybrid semiconducting palladium halide complexes: [(R)/(S)-2-Methylpiperazinediium]PdCl4. Materials Research Bulletin, 2023, 164, pp.112251. ⟨10.1016/j.materresbull.2023.112251⟩. ⟨hal-04115714⟩
17 Consultations
33 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More