Two-dimensional ordering in 1-propanol-graphite-oxide intercalates: isotopic effects

被引:2
作者
Cabrillo, Carlos [1 ]
Barroso-Bujans, Fabienne [1 ,3 ,4 ]
Cerveny, Silvina [2 ,3 ]
Fernandez-Perea, Ricardo [1 ]
Fernandez-Alonso, Felix [5 ]
Bowron, Daniel [5 ]
Bermejo, Francisco Javier [1 ]
机构
[1] CSIC, Inst Estruct Mat, Serrano 123, Madrid 28006, Spain
[2] MPC, CSIC, UPV EHU, Ctr FIs Mat, San Sebastian, Spain
[3] DIPC, San Sebastian, Spain
[4] Basque Fdn Sci, IKERBASQUE, Bilbao, Spain
[5] Rutherford Appleton Lab, ISIS Pulsed Neutron & Muon Source, Didcot, Oxon, England
关键词
Graphite oxide; 1-propanol; intercalation; neutron scattering; 2D ordering transitions; GRAPHITE-OXIDE; POLY(ETHYLENE OXIDE); PHASE-TRANSITIONS; ORGANIC-SOLVENTS; DYNAMICS; WATER; SPECTROSCOPY; CONFINEMENT; ALCOHOLS;
D O I
10.1080/00268976.2019.1638978
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Intercalation of fully deuterated 1-propyl alcohol into graphite oxide is studied by means of the unique capabilities offered by the NIMROD neutron diffractometer. We develop methods to estimate the amount of intercalant present within the neutron irradiated volume using for the purpose of the set of constraints implicit in the outputs of the Gudrun diffraction data treatment software. The results are compared to those from our previous study on of fully hydrogenated 1-propanol intercalation [C. Cabrillo, F. Barroso-Bujans, R. Fernandez-Perea, F. Fernandez-Alonso, D. Bowron and F.J. Bermejo, Carbon 100, 546 (2016)] where a two-dimensional ordering transition under slow heating from 100 K was discovered. The rearrangement of the 1-propanol molecular pillars did allow for the formation of bilayer intercalation. In contrast, sample deuteration leads to remarkable differences in both the intercalation kinetics and intercalate thermal response, avoiding the two-dimensional transition which would lead to bilayer formation. Finally, neutron diffraction results have enabled us to disentangle the highly anomalous behaviour exhibited by hitherto unpublished broad band dielectric spectroscopy studies which are now understood on the basis of the two-dimensional transition just referred to. [GRAPHICS] .
引用
收藏
页码:3434 / 3444
页数:11
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