Journal Article

PUBDB-2021-03047

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Unexpected Order–Disorder Transition in Diacetylene Alcohol Langmuir Films

Rego, T.Extern* ; Spagnoli, S. ; Fauré, M.-C.Extern* ; Allain, C. ; Coasne, B. ; Malinge, J. ; Shen, C.Extern*DESY* ; Fontaine, P. ; Goldmann, M. (Corresponding author)Extern*

2021
ACS Publ. Washington, DC

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Please use a persistent id in citations: doi:10.1021/acs.langmuir.1c01038

Abstract: The phase diagram of Langmuir film of diacetylene alcohol – henicosa-5,7-diyn-1-ol – is investigated by means of surface pressure versus surface area isotherms, Brewster Angle Microscopy (BAM), X-Ray Reflectivity (XRR) and Grazing Incident X-ray Diffraction (GIXD). Among the usual phases described in the generic phase diagram of small head group molecules, one observes an unexpected reversible transition from an ordered condensed phase to a disordered one upon increasing the surface pressure. We postulate that the origin of this unusual, unprecedented transition results from the competition between the interactions between the diacetylene blocks in the hydrophobic chain and the hydrogen bonds between head-groups and water.

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Contributing Institute(s):

1. FS Photon Science (PhotonScience)
2. Experimentebetreuung PETRA III (FS-PET-D)

Research Program(s):

1. 631 - Matter – Dynamics, Mechanisms and Control (POF4-631) (POF4-631)
2. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)

Experiment(s):

1. PETRA Beamline P08 (PETRA III)

Appears in the scientific report 2021

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Database coverage:
; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; Essential Science Indicators ; IF < 5 ; JCR ; Nationallizenz ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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