Multitrack Linearly Polarized Spectrometer for Simultaneous Kinetic UV–Vis, Polarization-Resolved- Scattering, and Photoluminescence Measurements

Dynamic systems, defined by their continuous temporal evolution, are central to advancements in chemistry, biology, and materials science. Optical techniques that leverage light absorption, scattering, and emission are essential for characterizing structural and property changes in these systems. However, conventional optical tools─such as UV–vis spectroscopy, fluorescence, and scattering techniques─provide fragmented or incomplete insights, making it challenging to comprehensively understand dynamic processes and ensure reliable data interpretation. Herein, we introduce a charge-coupled device (CCD)-based multitrack linearly polarized spectrometer (MLPS) designed for simultaneous kinetic UV–vis, polarization-resolved scattering, and photoluminescence measurements. The MLPS facilitates concurrent quantification of scattering and fluorescence intensities and depolarizations, alongside UV–vis extinction, with subsecond temporal resolution. By integrating high temporal resolution with the ability to capture complementary spectra, the MLPS significantly enhances the functionality of optical spectroscopy, paving the way for broader applications in dynamic system analysis and advancing research across multiple scientific disciplines. Furthermore, the instrument characterization and data preprocessing methodologies presented here provide valuable insights for the future development of multitrack CCD-based spectrometers.