Langmuir films of an oligo(p-phenylene vinylene) functionalized with a diaminotriazine headgroup

被引:17
|
作者
Balogh, DT
Dhanabalan, A
Dynarowicz-Latka, P
Schenning, APHJ
Oliveira, ON
Meijer, EW
Janssen, RAJ
机构
[1] Eindhoven Univ Technol, Lab Macromol & Organ Chem, NL-5600 MB Eindhoven, Netherlands
[2] Univ Sao Paulo, Inst Fis Sao Carlos, BR-13560970 Sao Carlos, SP, Brazil
[3] Jagiellonian Univ, Fac Chem, PL-30060 Krakow, Poland
关键词
D O I
10.1021/la001356r
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
A detailed investigation is presented on the Langmuir film characteristics of a novel substituted oligo(p-phenylene vinylene) with a diaminotriazine headgroup, namely, 6-[4-{4-(3,4,5-tridodecyloxystyryl)-2,5-bis[(S)-2-methylbutoxy]styryl}-2,5-bis[(S)-2-methylbutoxy]styryl]phenyl-2,4-diamino-1,3,5-triazine (OPVT). The films were characterized by recording surface pressure (pi -A) and surface potential(DeltaV-A) isotherms, in addition to Brewster angle microscopy (BAM). The limiting mean molecular area indicates formation of a monomolecular Langmuir film of OPVT at the air-water interface. The dependence of a plateau transition in the pi -A isotherm on experimental conditions is studied. The critical area for the increase in surface potential revealed the interaction of OPVT molecules even at a large area per molecule, supported by BAM images. On the basis of the data, we propose a model for the organization of OPVT molecules at different stages of film compression.
引用
收藏
页码:3281 / 3285
页数:5
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