Effect of Methylene Chain Length on the Thermodynamic Properties, Ferroelastic Properties, and Molecular Dynamics of the Perovskite-type Layer Crystal [NH3(CH2) n NH3]MnCl4 (n = 2, 3, and 4)
The structures and phase transitions of [NH3(CH2) n NH3]MnCl4 (n = 2, 3, and 4) crystals were confirmed through X-ray diffraction and differential scanning calorimetry (DSC) experiments. Thermodynamic properties, ferroelastic properties, and molecular dynamics of three crystals were studied as a fu...
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description | The structures and phase transitions of [NH3(CH2) n NH3]MnCl4 (n = 2, 3, and 4) crystals were confirmed through X-ray diffraction and differential scanning calorimetry (DSC) experiments. Thermodynamic properties, ferroelastic properties, and molecular dynamics of three crystals were studied as a function of the number (n) of CH2 groups in the alkylene chains. The loss in molecular weight due to a decrease in n marked the onset of the partial thermal decomposition. The thermal decomposition temperature, T d, increased with increasing length of the CH2 chain. While the ferroelastic twin domain walls for n = 2 and 4 were in the same direction at all temperatures, the domain walls for n = 3 were rotated by 45°, and the direction of extinction in phase II was rotated by 45° with respect to phases I and III. The 1H and 13C MAS NMR spectra of the three crystals were recorded as a function of temperature. With increasing length of the CH2 chain, the 1H spin relaxation time decreased, indicating that molecular motions were activated. These results provide insights into the thermodynamic properties and structural dynamics of the [NH3(CH2) n NH3]MnCl4 crystals and are expected to facilitate their potential applications. |
doi_str_mv | 10.1021/acsomega.1c01782 |
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Thermodynamic properties, ferroelastic properties, and molecular dynamics of three crystals were studied as a function of the number (n) of CH2 groups in the alkylene chains. The loss in molecular weight due to a decrease in n marked the onset of the partial thermal decomposition. The thermal decomposition temperature, T d, increased with increasing length of the CH2 chain. While the ferroelastic twin domain walls for n = 2 and 4 were in the same direction at all temperatures, the domain walls for n = 3 were rotated by 45°, and the direction of extinction in phase II was rotated by 45° with respect to phases I and III. The 1H and 13C MAS NMR spectra of the three crystals were recorded as a function of temperature. With increasing length of the CH2 chain, the 1H spin relaxation time decreased, indicating that molecular motions were activated. These results provide insights into the thermodynamic properties and structural dynamics of the [NH3(CH2) n NH3]MnCl4 crystals and are expected to facilitate their potential applications.</description><identifier>ISSN: 2470-1343</identifier><identifier>EISSN: 2470-1343</identifier><identifier>DOI: 10.1021/acsomega.1c01782</identifier><identifier>PMID: 34151117</identifier><language>eng</language><publisher>WASHINGTON: American Chemical Society</publisher><subject>Chemistry ; Chemistry, Multidisciplinary ; Physical Sciences ; Science & Technology</subject><ispartof>ACS omega, 2021-06, Vol.6 (23), p.15392-15399</ispartof><rights>2021 The Authors. Published by American Chemical Society</rights><rights>2021 The Authors. 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Thermodynamic properties, ferroelastic properties, and molecular dynamics of three crystals were studied as a function of the number (n) of CH2 groups in the alkylene chains. The loss in molecular weight due to a decrease in n marked the onset of the partial thermal decomposition. The thermal decomposition temperature, T d, increased with increasing length of the CH2 chain. While the ferroelastic twin domain walls for n = 2 and 4 were in the same direction at all temperatures, the domain walls for n = 3 were rotated by 45°, and the direction of extinction in phase II was rotated by 45° with respect to phases I and III. The 1H and 13C MAS NMR spectra of the three crystals were recorded as a function of temperature. With increasing length of the CH2 chain, the 1H spin relaxation time decreased, indicating that molecular motions were activated. These results provide insights into the thermodynamic properties and structural dynamics of the [NH3(CH2) n NH3]MnCl4 crystals and are expected to facilitate their potential applications.</description><subject>Chemistry</subject><subject>Chemistry, Multidisciplinary</subject><subject>Physical Sciences</subject><subject>Science & Technology</subject><issn>2470-1343</issn><issn>2470-1343</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><sourceid>N~.</sourceid><sourceid>HGBXW</sourceid><sourceid>DOA</sourceid><recordid>eNqNks1uEzEUhUcIRKvSPUsvU5EU_82MZwFSNbSkUgJdlBVC1o19J5kwsYPtKcrL8WxMSECUFSsf-Z77HVk-WfaS0UtGOXsNJvoNLuGSGcpKxZ9kp1yWdMKEFE__0ifZeYxrSikrFFe8eJ6dCMlyxlh5mv24bho0ifiGzDGtdh06JPUKWkdm6JZpRbwjaYXkfoVh4-3OwaY15C74LYbUYhyTGwzBYwcx_TMAZ8ncd2j6DgJ5d1iN-6g98A6Df4hf24STtNsimcEOA6nDLiboyOcPUzGqp_yCODLIL3NXd5KMHHlD-JiIA1xevMieNdBFPD-eZ9mnm-v7ejqZfXx_W1_NJiCUShMmwRjkpRULhqWwjVpYZUBJwZuqhMZWTV4qsJJVeWlKsAq4NAteyZxRVglxlt0euNbDWm9Du4Gw0x5a_evCh6WG4dWmQ02RUsWkFYUcYiGvhFFoLVWFUBXnOLDeHljbfrFBa9ClAN0j6OOJa1d66R-04oxKUQ6A0REQ_LceY9KbNhrsOnDo-6h5PrhoznI6WNXB-h0XvommRWfwT9TQiaIQlcjpXom6TZBa72rfuzSsvvr_1cE9PriHVuq174MbvkMzqvdV1b-rqo9VFT8BJzzZlA</recordid><startdate>20210615</startdate><enddate>20210615</enddate><creator>Lee, Seon Ju</creator><creator>Choi, Moon Young</creator><creator>Lim, Ae Ran</creator><general>American Chemical Society</general><general>Amer Chemical Soc</general><scope>N~.</scope><scope>BLEPL</scope><scope>DTL</scope><scope>HGBXW</scope><scope>7X8</scope><scope>5PM</scope><scope>DOA</scope><orcidid>https://orcid.org/0000-0002-5242-9189</orcidid></search><sort><creationdate>20210615</creationdate><title>Effect of Methylene Chain Length on the Thermodynamic Properties, Ferroelastic Properties, and Molecular Dynamics of the Perovskite-type Layer Crystal [NH3(CH2) n NH3]MnCl4 (n = 2, 3, and 4)</title><author>Lee, Seon Ju ; Choi, Moon Young ; Lim, Ae Ran</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a388t-14acce27d3b1e73df8bd8ca8432f97afd9f578ad41957c7ad8a24cb2945101933</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Chemistry</topic><topic>Chemistry, Multidisciplinary</topic><topic>Physical Sciences</topic><topic>Science & Technology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Lee, Seon Ju</creatorcontrib><creatorcontrib>Choi, Moon Young</creatorcontrib><creatorcontrib>Lim, Ae Ran</creatorcontrib><collection>Access via American Chemical Society (ACS)</collection><collection>Web of Science Core Collection</collection><collection>Science Citation Index Expanded</collection><collection>Web of Science - Science Citation Index Expanded - 2021</collection><collection>MEDLINE - Academic</collection><collection>PubMed Central (Full Participant titles)</collection><collection>DOAJ Directory of Open Access Journals</collection><jtitle>ACS omega</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Lee, Seon Ju</au><au>Choi, Moon Young</au><au>Lim, Ae Ran</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effect of Methylene Chain Length on the Thermodynamic Properties, Ferroelastic Properties, and Molecular Dynamics of the Perovskite-type Layer Crystal [NH3(CH2) n NH3]MnCl4 (n = 2, 3, and 4)</atitle><jtitle>ACS omega</jtitle><stitle>ACS OMEGA</stitle><addtitle>ACS Omega</addtitle><date>2021-06-15</date><risdate>2021</risdate><volume>6</volume><issue>23</issue><spage>15392</spage><epage>15399</epage><pages>15392-15399</pages><issn>2470-1343</issn><eissn>2470-1343</eissn><abstract>The structures and phase transitions of [NH3(CH2) n NH3]MnCl4 (n = 2, 3, and 4) crystals were confirmed through X-ray diffraction and differential scanning calorimetry (DSC) experiments. Thermodynamic properties, ferroelastic properties, and molecular dynamics of three crystals were studied as a function of the number (n) of CH2 groups in the alkylene chains. The loss in molecular weight due to a decrease in n marked the onset of the partial thermal decomposition. The thermal decomposition temperature, T d, increased with increasing length of the CH2 chain. While the ferroelastic twin domain walls for n = 2 and 4 were in the same direction at all temperatures, the domain walls for n = 3 were rotated by 45°, and the direction of extinction in phase II was rotated by 45° with respect to phases I and III. The 1H and 13C MAS NMR spectra of the three crystals were recorded as a function of temperature. With increasing length of the CH2 chain, the 1H spin relaxation time decreased, indicating that molecular motions were activated. These results provide insights into the thermodynamic properties and structural dynamics of the [NH3(CH2) n NH3]MnCl4 crystals and are expected to facilitate their potential applications.</abstract><cop>WASHINGTON</cop><pub>American Chemical Society</pub><pmid>34151117</pmid><doi>10.1021/acsomega.1c01782</doi><tpages>8</tpages><orcidid>https://orcid.org/0000-0002-5242-9189</orcidid><oa>free_for_read</oa></addata></record> |
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subjects | Chemistry Chemistry, Multidisciplinary Physical Sciences Science & Technology |
title | Effect of Methylene Chain Length on the Thermodynamic Properties, Ferroelastic Properties, and Molecular Dynamics of the Perovskite-type Layer Crystal [NH3(CH2) n NH3]MnCl4 (n = 2, 3, and 4) |
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