Solid phase-enhanced photothermal lensing with mesoporous polymethacrylate matrices for optical-sensing chemical analysis

Dmitry A. Nedosekin, Nadezhda V. Saranchina, Aleksey V. Sukhanov, Nataliya Airatovna Gavrilenko, Ivan V. Mikheev, Mikhail A. Proskurnin

Результат исследований: Материалы для журналаСтатья

13 Цитирования (Scopus)

Выдержка

Procedures for the photothermal lens determination of metals and organic compounds, on the basis of solid-phase mesoporous optical-sensing materials (polymethacrylate [PMA]) matrices with immobilized reagents, were developed. These procedures combine (i) selective and efficient preconcentration of trace substances to be analyzed in specially designed and synthesized transparent mesoporous PMA plates; (ii) sensitive determination with the reliable and traceable photometric reactions previously developed for classical spectrophotometry; and (iii) the sensitivity enhancement of photothermal lens detection in polymers, which provides at least a ten-fold increase in sensitivity compared with solutions due to polymer thermo-optical properties (solid phase-enhanced thermal lensing). It is shown that the overall sensitivity of photothermal lens measurements in PMA matrices is two orders higher than photometric absorbance measurements for the same excitation source power, which is in good agreement with the expected theoretical sensitivity. Changes in the preparation of transparent PMA plates and analytical procedures for photothermal measurements compared with spectrophotometry are discussed. PMA matrices modified with various analytical reagents were applied to trace determination of Hg(II), Fe(II), Ag(I), Cu(II), and ascorbic acid, with subnanomolar to nanomolar limits of detection.

Язык оригиналаАнглийский
Страницы (с-по)709-717
Число страниц9
ЖурналApplied Spectroscopy
Том67
Номер выпуска7
DOI
СостояниеОпубликовано - июл 2013

Отпечаток

chemical analysis
solid phases
Lenses
Spectrophotometry
matrices
Chemical analysis
Ascorbic acid
sensitivity
lenses
Polymers
spectrophotometry
Organic compounds
reagents
Optical properties
matrix materials
thermal lensing
metal compounds
ascorbic acid
Ascorbic Acid
polymers

ASJC Scopus subject areas

  • Spectroscopy
  • Instrumentation

Цитировать

Solid phase-enhanced photothermal lensing with mesoporous polymethacrylate matrices for optical-sensing chemical analysis. / Nedosekin, Dmitry A.; Saranchina, Nadezhda V.; Sukhanov, Aleksey V.; Gavrilenko, Nataliya Airatovna; Mikheev, Ivan V.; Proskurnin, Mikhail A.

В: Applied Spectroscopy, Том 67, № 7, 07.2013, стр. 709-717.

Результат исследований: Материалы для журналаСтатья

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abstract = "Procedures for the photothermal lens determination of metals and organic compounds, on the basis of solid-phase mesoporous optical-sensing materials (polymethacrylate [PMA]) matrices with immobilized reagents, were developed. These procedures combine (i) selective and efficient preconcentration of trace substances to be analyzed in specially designed and synthesized transparent mesoporous PMA plates; (ii) sensitive determination with the reliable and traceable photometric reactions previously developed for classical spectrophotometry; and (iii) the sensitivity enhancement of photothermal lens detection in polymers, which provides at least a ten-fold increase in sensitivity compared with solutions due to polymer thermo-optical properties (solid phase-enhanced thermal lensing). It is shown that the overall sensitivity of photothermal lens measurements in PMA matrices is two orders higher than photometric absorbance measurements for the same excitation source power, which is in good agreement with the expected theoretical sensitivity. Changes in the preparation of transparent PMA plates and analytical procedures for photothermal measurements compared with spectrophotometry are discussed. PMA matrices modified with various analytical reagents were applied to trace determination of Hg(II), Fe(II), Ag(I), Cu(II), and ascorbic acid, with subnanomolar to nanomolar limits of detection.",
keywords = "Optical-sensing materials, Photothermal spectroscopy, Sensitivity comparison, Solid-phase spectrophotometry, Thermal lens spectrometry, Trace determination",
author = "Nedosekin, {Dmitry A.} and Saranchina, {Nadezhda V.} and Sukhanov, {Aleksey V.} and Gavrilenko, {Nataliya Airatovna} and Mikheev, {Ivan V.} and Proskurnin, {Mikhail A.}",
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AU - Nedosekin, Dmitry A.

AU - Saranchina, Nadezhda V.

AU - Sukhanov, Aleksey V.

AU - Gavrilenko, Nataliya Airatovna

AU - Mikheev, Ivan V.

AU - Proskurnin, Mikhail A.

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AB - Procedures for the photothermal lens determination of metals and organic compounds, on the basis of solid-phase mesoporous optical-sensing materials (polymethacrylate [PMA]) matrices with immobilized reagents, were developed. These procedures combine (i) selective and efficient preconcentration of trace substances to be analyzed in specially designed and synthesized transparent mesoporous PMA plates; (ii) sensitive determination with the reliable and traceable photometric reactions previously developed for classical spectrophotometry; and (iii) the sensitivity enhancement of photothermal lens detection in polymers, which provides at least a ten-fold increase in sensitivity compared with solutions due to polymer thermo-optical properties (solid phase-enhanced thermal lensing). It is shown that the overall sensitivity of photothermal lens measurements in PMA matrices is two orders higher than photometric absorbance measurements for the same excitation source power, which is in good agreement with the expected theoretical sensitivity. Changes in the preparation of transparent PMA plates and analytical procedures for photothermal measurements compared with spectrophotometry are discussed. PMA matrices modified with various analytical reagents were applied to trace determination of Hg(II), Fe(II), Ag(I), Cu(II), and ascorbic acid, with subnanomolar to nanomolar limits of detection.

KW - Optical-sensing materials

KW - Photothermal spectroscopy

KW - Sensitivity comparison

KW - Solid-phase spectrophotometry

KW - Thermal lens spectrometry

KW - Trace determination

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