Introduction

CPL-300

Circularly Polarized Luminescence (CPL)
– High sensitivity and wide wavelength range detection
– Eliminate artifacts due to fluorescence anisotropy

Fig.1  CPL-300 CPL spectrophotometer

Features
– Double-prism monochromator
Low stray light, no second-order radiation and no Wood’s anomalies

– 180° sample geometry with unpolarized excitation light
Eliminate the fluorescence anisotropy artifacts that distort CPL spectra

– Excitation (Ex) and emission (Em) monochromators
Possible to set appropriate Ex wavelength and Em spectral bandwidth

– High-throughput optical system and highly sensitive PMT
Increased fluorescence sensitivity

– Data collection and processing
Simultaneous measurements of CPL and fluorescence intensity
One-click data conversion to ΔI and g_lum

Experimental

High sensitivity and accuracy measurements

Fig.2  CPL spectra of camphor

Fig.3  CPL spectra of camphorquinone

High-resolution measurements

Fig.4  High-resolution CPL spectra of Eu(facam)₃

– Similar spectrum shape could be observed between CPL and Fluorescence spectrometer
– Very weak emission peak could be detected