A differential thermal analysis and ultraviolet photoemission study on surface freezing of n-alkanes

被引：16
|
作者：
Yamamoto, Y
Ohara, H
Kajikawa, K
Ishii, H
Ueno, N
Seki, K
Ouchi, Y [1 ]
机构：
[1] Nagoya Univ, Grad Sch Sci, Dept Chem, Nagoya, Aichi 4648602, Japan
[2] Nagoya Univ, Res Ctr Mat Sci, Nagoya, Aichi 4648602, Japan
[3] Inst Mol Sci, Okazaki, Aichi 4448585, Japan
来源：
CHEMICAL PHYSICS LETTERS | 1999年 / 304卷 / 3-4期
基金：
日本学术振兴会;
关键词：
D O I：
10.1016/S0009-2614(99)00295-X
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：
The surface-freezing effect of pentacontane (n-C50H102) and tetratetracontane (n-C44H90) films evaporated on a copper substrate has been investigated by differential thermal analysis (DTA) simultaneously with measurements of surface-specific ultraviolet (UV) photoemission. Two anomalies in the DTA curve were observed near the bulk melting temperature, one of which has been attributed to bulk melting. Since the temperature dependence of the surface-specific UV photoemission measurement showed a corresponding stepwise increase and decrease in the photoemission current at the two anomalies observed in the DTA, we have concluded that the other phase transition peak originates from surface freezing. (C) 1999 Elsevier Science B.V. All rights reserved.
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页码：231 / 235
页数：5
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