Academic Journal
Interfacial Water Molecules as Agents for Phase Change Control and Proton Conductivity Enhancement in the Ammonium Vanadyl Tartrate System
| العنوان: | Interfacial Water Molecules as Agents for Phase Change Control and Proton Conductivity Enhancement in the Ammonium Vanadyl Tartrate System |
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| المؤلفون: | Marko Dunatov, Krešimir Molčanov, Zoran Štefanić, Robert Kruk, Lidija Androš Dubraja |
| سنة النشر: | 2023 |
| مصطلحات موضوعية: | Biophysics, Biochemistry, Biotechnology, Space Science, Environmental Sciences not elsewhere classified, Chemical Sciences not elsewhere classified, Physical Sciences not elsewhere classified, tetragonal structure (<, proton transfer mechanisms, proton conductivity enhancement, observed 5 orders, interfacial water molecules, influencing proton conductivity, hydrogen bonding due, driving structural transformations, ammonium vanadyl (<, phase change control, anhydrous phases exhibit, reversible structural transformation, 1 , hydrate phase compared, 2 , anhydrous phase, hydrate phase, situ <, p <, l <, vacuum conditions, study demonstrates, results highlight |
| الوصف: | This study demonstrates the reversible structural transformation, single-crystal-to-single-crystal, of the ammonium vanadyl ( L -tartrate) complex salt from the hydrate phase to the anhydrous phase. The transformation can be initiated by stimuli, such as temperature, humidity, or vacuum conditions. The hydrate and anhydrous phases exhibit a tetragonal structure ( P 4 1 2 1 2), with marked differences in hydrogen bonding due to the presence or absence of one water molecule per asymmetric unit. The intricate relationship between crystal packing and intermolecular interactions in the hydrate phase was investigated by crystallographic charge density analysis revealing, at the molecular level, the reasons for the observed 5 orders of magnitude higher proton conductivity of the hydrate phase compared to that of the anhydrous phase. To gain further insight into the processes occurring at the surfaces of grain boundaries and the proton transfer mechanisms in this system, rehydration of the complex salt was carried out by using D 2 O instead of H 2 O and monitored by in situ ATR-FTIR spectroscopy. The results highlight the critical role of interfacial water molecules in driving structural transformations and influencing proton conductivity. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | unknown |
| Relation: | https://figshare.com/articles/journal_contribution/Interfacial_Water_Molecules_as_Agents_for_Phase_Change_Control_and_Proton_Conductivity_Enhancement_in_the_Ammonium_Vanadyl_Tartrate_System/24837186 |
| DOI: | 10.1021/acs.inorgchem.3c02605.s001 |
| الاتاحة: | https://doi.org/10.1021/acs.inorgchem.3c02605.s001 https://figshare.com/articles/journal_contribution/Interfacial_Water_Molecules_as_Agents_for_Phase_Change_Control_and_Proton_Conductivity_Enhancement_in_the_Ammonium_Vanadyl_Tartrate_System/24837186 |
| Rights: | CC BY-NC 4.0 |
| رقم الانضمام: | edsbas.6AD600FA |
| قاعدة البيانات: | BASE |
| DOI: | 10.1021/acs.inorgchem.3c02605.s001 |
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