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A surface potential study of ion-uptake by 5,11,17,23-tetra-tert-butyl-25,27-diethoxycarbonyl methyleneoxy-26,28,dihydroxycalix[4]arene and 5,17-(3-nitrobenzylideneamino)-11,23-di-tert-butyl-25,27- diethoxycarbonyl methyleneoxy-26,28-dihydroxycalix[4]arene Langmuir Blodgett (LB) monolayers

A study of surface pressure - area (Π-A) isotherms, surface potential (ΔV) and effective dipole moment () of two calix[4] arenes, 5,11,17,23-tetra-tert-butyl-25,27-diethoxycarbonyl methyleneoxy-26,28,dihydroxycalix[4]arene (calixarene I) and 5,17-(3-nitrobenzylideneamino)-11,23-di-tert-butyl-25,27-d...

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Main Authors: F.L. Supian,, T.H. Richardson,, M. Deasy,, F. Kelleher,, J.P. Ward,
Format: Article
Language:English
Published: Universiti Kebangsaan Malaysia 2010
Online Access:http://journalarticle.ukm.my/7353/1/01_Md_Yeaminhossain.pdf
http://journalarticle.ukm.my/7353/
http://www.ukm.my/jsm/english_journals/vol39num3_2010/contentsVol39num3_2010.html
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spelling my-ukm.journal.73532016-12-14T06:43:50Z http://journalarticle.ukm.my/7353/ A surface potential study of ion-uptake by 5,11,17,23-tetra-tert-butyl-25,27-diethoxycarbonyl methyleneoxy-26,28,dihydroxycalix[4]arene and 5,17-(3-nitrobenzylideneamino)-11,23-di-tert-butyl-25,27- diethoxycarbonyl methyleneoxy-26,28-dihydroxycalix[4]arene Langmuir Blodgett (LB) monolayers F.L. Supian, T.H. Richardson, M. Deasy, F. Kelleher, J.P. Ward, A study of surface pressure - area (Π-A) isotherms, surface potential (ΔV) and effective dipole moment () of two calix[4] arenes, 5,11,17,23-tetra-tert-butyl-25,27-diethoxycarbonyl methyleneoxy-26,28,dihydroxycalix[4]arene (calixarene I) and 5,17-(3-nitrobenzylideneamino)-11,23-di-tert-butyl-25,27-diethoxycarbonyl methyleneoxy-26,28-dihydroxycalix[4] arene (calixarene II) LB films which have the same lower rim but different upper rim has been carried out. This work used a NIMA Surface Potential (S-POT) sensor attached to an LB trough. Space filling model or Corey, Pauling and Koltun (CPK) precision molecular models have been used to estimate the size and the flexibility of both calix[4]arenes, which has been confirmed by X-Ray analysis in one case. The Π-A-isotherms confirmed that both of the calix[4]arenes form a monolayer film and the orientations of the plane of the calix ring are parallel with the air-water interface. The value of limiting area, (Alim) increases as a result of adding Fe3+ salt in the water subphase. For I, the value increases from 1.28 nm2 to 1.44 nm2 while for II, it increases from 1.70 nm2 to 1.86 nm2. ΔV measurements were performed on a water subphase containing Fe3+ salt in the concentration range 0 – 1.25 10–1 mM. ΔV of the compressed monolayer films increased with increasing Fe3+ concentration indicating the presence of Fe3+ salt bound within the calix[4]arenes. Using the ΔV values, the effective dipole moment has been found using the Helmholtz equation. Universiti Kebangsaan Malaysia 2010-06 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/7353/1/01_Md_Yeaminhossain.pdf F.L. Supian, and T.H. Richardson, and M. Deasy, and F. Kelleher, and J.P. Ward, (2010) A surface potential study of ion-uptake by 5,11,17,23-tetra-tert-butyl-25,27-diethoxycarbonyl methyleneoxy-26,28,dihydroxycalix[4]arene and 5,17-(3-nitrobenzylideneamino)-11,23-di-tert-butyl-25,27- diethoxycarbonyl methyleneoxy-26,28-dihydroxycalix[4]arene Langmuir Blodgett (LB) monolayers. Sains Malaysiana, 39 (3). pp. 423-433. ISSN 0126-6039 http://www.ukm.my/jsm/english_journals/vol39num3_2010/contentsVol39num3_2010.html
institution Universiti Kebangsaan Malaysia
building Perpustakaan Tun Sri Lanang Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Kebangsaan Malaysia
content_source UKM Journal Article Repository
url_provider http://journalarticle.ukm.my/
language English
description A study of surface pressure - area (Π-A) isotherms, surface potential (ΔV) and effective dipole moment () of two calix[4] arenes, 5,11,17,23-tetra-tert-butyl-25,27-diethoxycarbonyl methyleneoxy-26,28,dihydroxycalix[4]arene (calixarene I) and 5,17-(3-nitrobenzylideneamino)-11,23-di-tert-butyl-25,27-diethoxycarbonyl methyleneoxy-26,28-dihydroxycalix[4] arene (calixarene II) LB films which have the same lower rim but different upper rim has been carried out. This work used a NIMA Surface Potential (S-POT) sensor attached to an LB trough. Space filling model or Corey, Pauling and Koltun (CPK) precision molecular models have been used to estimate the size and the flexibility of both calix[4]arenes, which has been confirmed by X-Ray analysis in one case. The Π-A-isotherms confirmed that both of the calix[4]arenes form a monolayer film and the orientations of the plane of the calix ring are parallel with the air-water interface. The value of limiting area, (Alim) increases as a result of adding Fe3+ salt in the water subphase. For I, the value increases from 1.28 nm2 to 1.44 nm2 while for II, it increases from 1.70 nm2 to 1.86 nm2. ΔV measurements were performed on a water subphase containing Fe3+ salt in the concentration range 0 – 1.25 10–1 mM. ΔV of the compressed monolayer films increased with increasing Fe3+ concentration indicating the presence of Fe3+ salt bound within the calix[4]arenes. Using the ΔV values, the effective dipole moment has been found using the Helmholtz equation.
format Article
author F.L. Supian,
T.H. Richardson,
M. Deasy,
F. Kelleher,
J.P. Ward,
spellingShingle F.L. Supian,
T.H. Richardson,
M. Deasy,
F. Kelleher,
J.P. Ward,
A surface potential study of ion-uptake by 5,11,17,23-tetra-tert-butyl-25,27-diethoxycarbonyl methyleneoxy-26,28,dihydroxycalix[4]arene and 5,17-(3-nitrobenzylideneamino)-11,23-di-tert-butyl-25,27- diethoxycarbonyl methyleneoxy-26,28-dihydroxycalix[4]arene Langmuir Blodgett (LB) monolayers
author_facet F.L. Supian,
T.H. Richardson,
M. Deasy,
F. Kelleher,
J.P. Ward,
author_sort F.L. Supian,
title A surface potential study of ion-uptake by 5,11,17,23-tetra-tert-butyl-25,27-diethoxycarbonyl methyleneoxy-26,28,dihydroxycalix[4]arene and 5,17-(3-nitrobenzylideneamino)-11,23-di-tert-butyl-25,27- diethoxycarbonyl methyleneoxy-26,28-dihydroxycalix[4]arene Langmuir Blodgett (LB) monolayers
title_short A surface potential study of ion-uptake by 5,11,17,23-tetra-tert-butyl-25,27-diethoxycarbonyl methyleneoxy-26,28,dihydroxycalix[4]arene and 5,17-(3-nitrobenzylideneamino)-11,23-di-tert-butyl-25,27- diethoxycarbonyl methyleneoxy-26,28-dihydroxycalix[4]arene Langmuir Blodgett (LB) monolayers
title_full A surface potential study of ion-uptake by 5,11,17,23-tetra-tert-butyl-25,27-diethoxycarbonyl methyleneoxy-26,28,dihydroxycalix[4]arene and 5,17-(3-nitrobenzylideneamino)-11,23-di-tert-butyl-25,27- diethoxycarbonyl methyleneoxy-26,28-dihydroxycalix[4]arene Langmuir Blodgett (LB) monolayers
title_fullStr A surface potential study of ion-uptake by 5,11,17,23-tetra-tert-butyl-25,27-diethoxycarbonyl methyleneoxy-26,28,dihydroxycalix[4]arene and 5,17-(3-nitrobenzylideneamino)-11,23-di-tert-butyl-25,27- diethoxycarbonyl methyleneoxy-26,28-dihydroxycalix[4]arene Langmuir Blodgett (LB) monolayers
title_full_unstemmed A surface potential study of ion-uptake by 5,11,17,23-tetra-tert-butyl-25,27-diethoxycarbonyl methyleneoxy-26,28,dihydroxycalix[4]arene and 5,17-(3-nitrobenzylideneamino)-11,23-di-tert-butyl-25,27- diethoxycarbonyl methyleneoxy-26,28-dihydroxycalix[4]arene Langmuir Blodgett (LB) monolayers
title_sort surface potential study of ion-uptake by 5,11,17,23-tetra-tert-butyl-25,27-diethoxycarbonyl methyleneoxy-26,28,dihydroxycalix[4]arene and 5,17-(3-nitrobenzylideneamino)-11,23-di-tert-butyl-25,27- diethoxycarbonyl methyleneoxy-26,28-dihydroxycalix[4]arene langmuir blodgett (lb) monolayers
publisher Universiti Kebangsaan Malaysia
publishDate 2010
url http://journalarticle.ukm.my/7353/1/01_Md_Yeaminhossain.pdf
http://journalarticle.ukm.my/7353/
http://www.ukm.my/jsm/english_journals/vol39num3_2010/contentsVol39num3_2010.html
_version_ 1643737100306087936
score 13.211869

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