International Journal of Molecular Sciences (IF 4.9) run the entitled Special Issue, belonging to the section "Physical Chemistry and Chemical Physics" to create collection of papers on relevant specific topics.

Dear Colleagues,

Experimental science understands natural processes via empirical methods; it constructs hypotheses tested via experiments. Molecular spectroscopy and structural analysis produce justification. Methods are crafted for the practice of chemistry and physics, Earth and environmental sciences, social sciences, biology, agricultural research, and health. Empirically evidenced phenomena connect with the concept of the molecule; they explain how molecules produce food, materials, and living systems. Despite all of the above, no progress in understanding matter’s constitution can be achieved by utilizing only empirical approaches. Theoretical modeling is a crucial step with which to jump from a phenomenon’s observation to its prediction. It is with the aid of molecular spectroscopy, involving vibration, UV-Vis, CD-, fluorescence, or rotational transition spectroscopy, crystallography, Förster resonance energy transfer, EPR, cryogenic electron microscopy, atomic force spectroscopy, and electrochemistry, among other methods, that we are able to study matter in different aggregation states in bulk and at interfaces. Despite the indispensability of these methods, there are limitations. Our empirical knowledge derives from their complementary utilization, producing several thousand variables that are assessed chemometrically.

I am pleased to invite you to contribute your innovative original research and review articles, allowing you to disseminate your achievements. The research areas may include (but are not limited to) molecular spectroscopic and analyses concerning chemistry, biology, and medicine.

Please, consider detail on: [https://www.mdpi.com/journal/ijms/special_issues/8340R9V4SI].

Dr. Bojidarka Ivanova Guest Editor