Establishing new mechanisms with triplet and singlet excited-state hydrogen bonding roles in photoinduced liquid dynamics

Abstract

The interaction between hydrogen donor and acceptor molecules, known well as hydrogen bonding, forms a ubiquitous network in the natural and synthesis world. The hydrogen bonding role has thus been the subject of intensive work in the past. In this article, we discuss and show how the new mechanisms have been established in terms of the hydrogen bonding changes by reviewing some of the combined experimental and theoretical studies that have recently shed light on the intricate role of both triplet and singlet excited-state hydrogen bondings in photoinduced liquid dynamics and phenomena.

Keywords:

• excited-state hydrogen bonding
• photosensitized synthesis
• fluorescence emission
• hydrogen-atom abstracting reaction
• rotational reorientation
• excited-state proton transfer coupled with twisted intramolecular charge transfer