WFRF:(Kazemi Mehdi)
Sökning: WFRF:(Kazemi Mehdi) > (2017) > Influence of the al...
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| Fältnamn | Indikatorer | Metadata |
|---|---|---|
| 000 | 03316naa a2200361 4500 | |
| 001 | oai:DiVA.org:umu-137627 | |
| 003 | SwePub | |
| 008 | 170719s2017 | |||||||||||000 ||eng| | |
| 024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-1376272 URI |
| 024 | 7 | a https://doi.org/10.1039/c7cp02686b2 DOI |
| 040 | a (SwePub)umu | |
| 041 | a engb eng | |
| 042 | 9 SwePub | |
| 072 | 7 | a ref2 swepub-contenttype |
| 072 | 7 | a art2 swepub-publicationtype |
| 100 | 1 | a Kazemi, Mehdi Mohammad4 aut |
| 245 | 1 0 | a Influence of the alkyl side-chain length on the ultrafast vibrational dynamics of 1-alkyl-3-methylimidazolium bis(trifluoromethylsulfonyl) amide (C(n)mimNTf(2)) ionic liquids |
| 264 | c 2017 | |
| 264 | 1 | b Royal Society of Chemistry,c 2017 |
| 338 | a print2 rdacarrier | |
| 520 | a Probing the vibrational dynamics of 1-alkyl-3-methylimidazolium bis(trifluoromethylsulfonyl)amide (CnmimNTf2) ionic liquids (ILs) using femtosecond time-resolved coherent anti-Stokes Raman scattering (fs-CARS) has indicated the ultrafast vibrational energy transfer between counter ions which is governed by interionic interactions and facilitated by hydrogen bonds. In this study, fs-CARS is used to investigate the ultrafast dynamics of the vibrational modes of the CnmimNTf2 ILs with n = 6, 8, 10, and 12 in a spectral region, which involves the imidazolium ring and the alkyl side-chain vibrations. The vibrational Raman modes with wavenumbers around 1418 cm−1 are excited through the CARS process and the ultrafast time evolution of the consequently excited vibrational modes is monitored. The investigation of the life times of the fs-CARS transient signals indicates that the time scale of the dynamics becomes much faster when the alkyl side-chain length of the CnmimNTf2 is longer than n = 8. This observation suggests an increase in the hydrogen bonding interactions due to the nano-structuring of the ionic liquids, which became evident with an increasing length of the alkyl side-chain. This behavior is also found in molecular dynamics simulations. There, an increase of the oxygen density around the C(2)–H moiety of the imidazolium ring, which is the predominant site for hydrogen bond formation, is observed. In other words, the longer the alkyl side-chain, the more reorganization of the ionic liquid into polar and non-polar domains occurs and the higher the probability of finding interionic hydrogen bonds at the C(2)–H position becomes. | |
| 650 | 7 | a NATURVETENSKAPx Kemix Fysikalisk kemi0 (SwePub)104022 hsv//swe |
| 650 | 7 | a NATURAL SCIENCESx Chemical Sciencesx Physical Chemistry0 (SwePub)104022 hsv//eng |
| 700 | 1 | a Namboodiri, Maheshu Umeå universitet,Institutionen för integrativ medicinsk biologi (IMB)4 aut0 (Swepub:umu)mana0103 |
| 700 | 1 | a Donfack, Patrice4 aut |
| 700 | 1 | a Materny, Arnulf4 aut |
| 700 | 1 | a Kerle, Daniela4 aut |
| 700 | 1 | a Rathke, Bernd4 aut |
| 700 | 1 | a Kiefer, Johannes4 aut |
| 710 | 2 | a Umeå universitetb Institutionen för integrativ medicinsk biologi (IMB)4 org |
| 773 | 0 | t Physical Chemistry, Chemical Physics - PCCPd : Royal Society of Chemistryg 19:24, s. 15988-15995q 19:24<15988-15995x 1463-9076x 1463-9084 |
| 856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-137627 |
| 856 | 4 8 | u https://doi.org/10.1039/c7cp02686b |
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