Complex formation of an amphiphilic benzothiazolium styryl chromoionophore with metal cations in a monolayer at the air-water interface

Igor K. Lednev; Michael C. Petty

doi:10.1021/j100012a044

Complex formation of an amphiphilic benzothiazolium styryl chromoionophore with metal cations in a monolayer at the air-water interface

Igor K. Lednev
, Michael C. Petty

Chemistry

University at Albany

Durham University

Research output: Contribution to journal › Article › peer-review

23 Scopus citations

Abstract

A condensed floating monolayer of an amphiphilic benzothiazolium styryl dye containing a 1,10-dithia-18-crown-6 ether group has been found to complex with Ag⁺ and Hg²⁺ cations in acidic subphases. The efficiency of the processes was more than 2 orders of magnitude greater than expected for homogeneous solutions. This was attributed to the formation of L₂M complexes (L = ligand; M = metal cation) at salt concentrations of 10^-7 to 10^-6 M. "Sandwich" complexes with composition L_nM_n-1 (n > 2) may form at higher salt concentrations. Surface pressure versus area isotherms measured on Ag⁺-containing subphases showed changes for Ag⁺ concentrations in the range 10^-7 to 10^-4 M. However, BTC Langmuir-Blodgett films built up from acidic subphases containing either AgClO₄ or Hg(ClO₄)₂ only exhibited hypsochromic shifts in their long-wavelength absorption peaks for salt concentrations from 10^-7 to 10^-6 M.

Original language	English
Pages (from-to)	4176-4180
Number of pages	5
Journal	Journal of Physical Chemistry
Volume	99
Issue number	12
DOIs	https://doi.org/10.1021/j100012a044
State	Published - 1995

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title = "Complex formation of an amphiphilic benzothiazolium styryl chromoionophore with metal cations in a monolayer at the air-water interface",

abstract = "A condensed floating monolayer of an amphiphilic benzothiazolium styryl dye containing a 1,10-dithia-18-crown-6 ether group has been found to complex with Ag+ and Hg2+ cations in acidic subphases. The efficiency of the processes was more than 2 orders of magnitude greater than expected for homogeneous solutions. This was attributed to the formation of L2M complexes (L = ligand; M = metal cation) at salt concentrations of 10-7 to 10-6 M. {"}Sandwich{"} complexes with composition LnMn-1 (n > 2) may form at higher salt concentrations. Surface pressure versus area isotherms measured on Ag+-containing subphases showed changes for Ag+ concentrations in the range 10-7 to 10-4 M. However, BTC Langmuir-Blodgett films built up from acidic subphases containing either AgClO4 or Hg(ClO4)2 only exhibited hypsochromic shifts in their long-wavelength absorption peaks for salt concentrations from 10-7 to 10-6 M.",

author = "Lednev, \{Igor K.\} and Petty, \{Michael C.\}",

year = "1995",

doi = "10.1021/j100012a044",

language = "English",

volume = "99",

pages = "4176--4180",

journal = "Journal of Physical Chemistry",

issn = "0022-3654",

publisher = "American Chemical Society",

number = "12",

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TY - JOUR

T1 - Complex formation of an amphiphilic benzothiazolium styryl chromoionophore with metal cations in a monolayer at the air-water interface

AU - Lednev, Igor K.

AU - Petty, Michael C.

PY - 1995

Y1 - 1995

N2 - A condensed floating monolayer of an amphiphilic benzothiazolium styryl dye containing a 1,10-dithia-18-crown-6 ether group has been found to complex with Ag+ and Hg2+ cations in acidic subphases. The efficiency of the processes was more than 2 orders of magnitude greater than expected for homogeneous solutions. This was attributed to the formation of L2M complexes (L = ligand; M = metal cation) at salt concentrations of 10-7 to 10-6 M. "Sandwich" complexes with composition LnMn-1 (n > 2) may form at higher salt concentrations. Surface pressure versus area isotherms measured on Ag+-containing subphases showed changes for Ag+ concentrations in the range 10-7 to 10-4 M. However, BTC Langmuir-Blodgett films built up from acidic subphases containing either AgClO4 or Hg(ClO4)2 only exhibited hypsochromic shifts in their long-wavelength absorption peaks for salt concentrations from 10-7 to 10-6 M.

AB - A condensed floating monolayer of an amphiphilic benzothiazolium styryl dye containing a 1,10-dithia-18-crown-6 ether group has been found to complex with Ag+ and Hg2+ cations in acidic subphases. The efficiency of the processes was more than 2 orders of magnitude greater than expected for homogeneous solutions. This was attributed to the formation of L2M complexes (L = ligand; M = metal cation) at salt concentrations of 10-7 to 10-6 M. "Sandwich" complexes with composition LnMn-1 (n > 2) may form at higher salt concentrations. Surface pressure versus area isotherms measured on Ag+-containing subphases showed changes for Ag+ concentrations in the range 10-7 to 10-4 M. However, BTC Langmuir-Blodgett films built up from acidic subphases containing either AgClO4 or Hg(ClO4)2 only exhibited hypsochromic shifts in their long-wavelength absorption peaks for salt concentrations from 10-7 to 10-6 M.

UR - https://www.scopus.com/pages/publications/0001076144

U2 - 10.1021/j100012a044

DO - 10.1021/j100012a044

M3 - Article

SN - 0022-3654

VL - 99

SP - 4176

EP - 4180

JO - Journal of Physical Chemistry

JF - Journal of Physical Chemistry

IS - 12

ER -

Complex formation of an amphiphilic benzothiazolium styryl chromoionophore with metal cations in a monolayer at the air-water interface

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