IR spectroscopy of PAHs

Oomens

Introduction

- astrophysical observations

- UIR bands

- possible carriers, why PAHs?

- emission process

- PAH characteristics

- UV absorption

- UV photostability and ionization

- neutral vs ionic PAHs

Experimental methods

- laboratory spectroscopic methods

- neutral

- cation

- computational

PAH IR spectra

- spectra of neutrals

- matrix isolation data

- Far IR spectra

- cation spectra

- matrix isolation

- comparison between experimental methods

- matrix isolation vs. gas-phase

- IRMPD vs linear absorption spectroscopy

- relevance to emission spectra

- Related species

- Fe+PAHs

- N-substituted PAHs

- (de)hydrogenated PAHs

- diamondoids

- neutrals

- ions

Astrophysical relevance & implications of the spectra

- Matching the lab spectra with UIR bands

- spectral trends

- average PAH spectra

- size and charge state of interstellar PAHs

- toward giant PAHs

- Open issues