Abstract
Vibrational Raman spectroscopy, one of the experimental techniques available, is applied
for characterization and analysis of molecular samples in different areas such as medical,
food and environmental analysis. Application of the Raman technique is mostly similar
to the application of infrared and near-infrared absorption spectroscopy, i.e. only the
spectral distribution is analysed. The goal of the present chapter is to demonstrate that
the amount of molecular information (also for solutions and powders) can be increased
considerably by analysing also the polarization of the Raman and resonance Ramanscattered
light. The goal is achieved through: (1) a discussion of the basic properties of
Raman scattering with special focus on polarization and polarization dispersion. The
discussion includes the rotational invariants of Raman tensors, the non-commuting generator
approach to molecular symmetry as a tool for construction of state and Raman
tensors for single molecules and dimers and higher aggregates and thereby predict the
polarization; (2) a discussion of two illustrative case studies: Case study 1: Aggregation
of haemoglobin in red blood cells (RBC); and Case study 2: In vitro polarization resolved
RRS study of dye-sensitized solar cells.
for characterization and analysis of molecular samples in different areas such as medical,
food and environmental analysis. Application of the Raman technique is mostly similar
to the application of infrared and near-infrared absorption spectroscopy, i.e. only the
spectral distribution is analysed. The goal of the present chapter is to demonstrate that
the amount of molecular information (also for solutions and powders) can be increased
considerably by analysing also the polarization of the Raman and resonance Ramanscattered
light. The goal is achieved through: (1) a discussion of the basic properties of
Raman scattering with special focus on polarization and polarization dispersion. The
discussion includes the rotational invariants of Raman tensors, the non-commuting generator
approach to molecular symmetry as a tool for construction of state and Raman
tensors for single molecules and dimers and higher aggregates and thereby predict the
polarization; (2) a discussion of two illustrative case studies: Case study 1: Aggregation
of haemoglobin in red blood cells (RBC); and Case study 2: In vitro polarization resolved
RRS study of dye-sensitized solar cells.
| Original language | English |
|---|---|
| Title of host publication | Raman Spectroscopy and Applications |
| Editors | Khan Maaz |
| Publisher | InTechOpen |
| Publication date | 2017 |
| Pages | 143 - 162 |
| Chapter | 7 |
| ISBN (Print) | 978-953-51-2907-3 |
| ISBN (Electronic) | 978-953-51-2908-0 |
| DOIs | |
| Publication status | Published - 2017 |