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Direct investigation of the reorientational dynamics of A-site cations in 2D organic-inorganic hybrid perovskite by solid-state NMR.
Lin, Cheng-Chieh; Huang, Shing-Jong; Wu, Pei-Hao; Chen, Tzu-Pei; Huang, Chih-Ying; Wang, Ying-Chiao; Chen, Po-Tuan; Radeva, Denitsa; Petrov, Ognyan; Gelev, Vladimir M; Sankar, Raman; Chen, Chia-Chun; Chen, Chun-Wei; Yu, Tsyr-Yan.
Affiliation
  • Lin CC; International Graduate Program of Molecular Science and Technology (NTU-MST), National Taiwan University, 10617, Taipei, Taiwan.
  • Huang SJ; Molecular Science and Technology Program, Taiwan International Graduate Program (TIGP), Academia Sinica, 11529, Taipei, Taiwan.
  • Wu PH; Instrumentation Center, National Taiwan University, 10617, Taipei, Taiwan.
  • Chen TP; Institute of Atomic and Molecular Sciences, Academia Sinica, 10617, Taipei, Taiwan.
  • Huang CY; Department of Materials Science and Engineering, National Taiwan University, 10617, Taipei, Taiwan.
  • Wang YC; International Graduate Program of Molecular Science and Technology (NTU-MST), National Taiwan University, 10617, Taipei, Taiwan.
  • Chen PT; Molecular Science and Technology Program, Taiwan International Graduate Program (TIGP), Academia Sinica, 11529, Taipei, Taiwan.
  • Radeva D; Department of Materials Science and Engineering, National Taiwan University, 10617, Taipei, Taiwan.
  • Petrov O; Department of Vehicle Engineering, National Taipei University of Technology, 10608, Taipei, Taiwan.
  • Gelev VM; Department of Chemistry and Pharmacy, Sofia University, 1 James Bourchier Boulevard, 1164, Sofia, Bulgaria.
  • Sankar R; Department of Chemistry and Pharmacy, Sofia University, 1 James Bourchier Boulevard, 1164, Sofia, Bulgaria.
  • Chen CC; Department of Chemistry and Pharmacy, Sofia University, 1 James Bourchier Boulevard, 1164, Sofia, Bulgaria.
  • Chen CW; Institute of Physics, Academia Sinica, 115201, Taipei, Taiwan.
  • Yu TY; Department of Chemistry, National Taiwan Normal University, 11677, Taipei, Taiwan.
Nat Commun ; 13(1): 1513, 2022 Mar 21.
Article in En | MEDLINE | ID: mdl-35314691
Limited methods are available for investigating the reorientational dynamics of A-site cations in two-dimensional organic-inorganic hybrid perovskites (2D OIHPs), which play a pivotal role in determining their physical properties. Here, we describe an approach to study the dynamics of A-site cations using solid-state NMR and stable isotope labelling. 2H NMR of 2D OIHPs incorporating methyl-d3-ammonium cations (d3-MA) reveals the existence of multiple modes of reorientational motions of MA. Rotational-echo double resonance (REDOR) NMR of 2D OIHPs incorporating 15N- and ¹³C-labeled methylammonium cations (13C,15N-MA) reflects the averaged dipolar coupling between the C and N nuclei undergoing different modes of motions. Our study reveals the interplay between the A-site cation dynamics and the structural rigidity of the organic spacers, so providing a molecular-level insight into the design of 2D OIHPs.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Nat Commun Journal subject: BIOLOGIA / CIENCIA Year: 2022 Document type: Article Affiliation country: Taiwán Country of publication: Reino Unido
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Nat Commun Journal subject: BIOLOGIA / CIENCIA Year: 2022 Document type: Article Affiliation country: Taiwán Country of publication: Reino Unido