Enhanced Raman Scattering by Molecular Nanoaggregates

The formation of a molecular aggregate in a confined, nanodimensioned region of space leads to what might be termed a ‘molecular nanoaggregate’. The present review deals with a theoretical formulation termed ‘aggregation-enhanced Raman scattering’ (AERS), and its use in discussion of relative Raman...

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Main Author: Daniel L. Akins
Format: Article
Language:English
Published: Wiley 2014-02-01
Series:Nanomaterials and Nanotechnology
Subjects:
Online Access:http://www.intechopen.com/journals/nanomaterials_and_nanotechnology/enhanced-raman-scattering-by-molecular-nanoaggregates
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author Daniel L. Akins
author_facet Daniel L. Akins
author_sort Daniel L. Akins
collection DOAJ
description The formation of a molecular aggregate in a confined, nanodimensioned region of space leads to what might be termed a ‘molecular nanoaggregate’. The present review deals with a theoretical formulation termed ‘aggregation-enhanced Raman scattering’ (AERS), and its use in discussion of relative Raman band intensities and selection rules for nanoaggregates. AERs represents a concept for discussion of nanoaggregates that is different from those provided by resonance Raman scattering, surface-enhanced Raman scattering and Mie scattering, all of which ignore the impact of aggregation of molecules on Raman scattering. Beyond the theoretical formulation behind the AERS phenomenon, also outlined in this review are representative samples of the publications of other authors and researchers using AERS to provide explanations for experimental findings. In addition to clarifying issues regarding the use of nanocomposites involving aggregated molecules, it is found that increasing use of AERS concepts is being made to rationalize Raman spectral observations in a range of other disciplines that fall in both the physical sciences and the medical fields.
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spelling doaj-art-93e88a9f9d73413592cd4600cdece9da2025-08-20T02:10:13ZengWileyNanomaterials and Nanotechnology1847-98042014-02-0144http://dx.doi.org/10.5772/5840346289Enhanced Raman Scattering by Molecular NanoaggregatesDaniel L. AkinsThe formation of a molecular aggregate in a confined, nanodimensioned region of space leads to what might be termed a ‘molecular nanoaggregate’. The present review deals with a theoretical formulation termed ‘aggregation-enhanced Raman scattering’ (AERS), and its use in discussion of relative Raman band intensities and selection rules for nanoaggregates. AERs represents a concept for discussion of nanoaggregates that is different from those provided by resonance Raman scattering, surface-enhanced Raman scattering and Mie scattering, all of which ignore the impact of aggregation of molecules on Raman scattering. Beyond the theoretical formulation behind the AERS phenomenon, also outlined in this review are representative samples of the publications of other authors and researchers using AERS to provide explanations for experimental findings. In addition to clarifying issues regarding the use of nanocomposites involving aggregated molecules, it is found that increasing use of AERS concepts is being made to rationalize Raman spectral observations in a range of other disciplines that fall in both the physical sciences and the medical fields.http://www.intechopen.com/journals/nanomaterials_and_nanotechnology/enhanced-raman-scattering-by-molecular-nanoaggregatesAggregationNanoRamanCyaninesPorphyrins
spellingShingle Daniel L. Akins
Enhanced Raman Scattering by Molecular Nanoaggregates
Nanomaterials and Nanotechnology
Aggregation
Nano
Raman
Cyanines
Porphyrins
title Enhanced Raman Scattering by Molecular Nanoaggregates
title_full Enhanced Raman Scattering by Molecular Nanoaggregates
title_fullStr Enhanced Raman Scattering by Molecular Nanoaggregates
title_full_unstemmed Enhanced Raman Scattering by Molecular Nanoaggregates
title_short Enhanced Raman Scattering by Molecular Nanoaggregates
title_sort enhanced raman scattering by molecular nanoaggregates
topic Aggregation
Nano
Raman
Cyanines
Porphyrins
url http://www.intechopen.com/journals/nanomaterials_and_nanotechnology/enhanced-raman-scattering-by-molecular-nanoaggregates
work_keys_str_mv AT daniellakins enhancedramanscatteringbymolecularnanoaggregates