Aggregation‐Induced Emission in Group 14 Metalloles (Siloles, Germoles, and Stannoles): Spectroscopic Considerations, Substituent Effects, and Applications

Chapter 2 of Aggregation‐Induced Emission: Fundamentals and Applications, Volume 1 Fundamentals, edited by Anjun Qin and Ben Zhong Tang. Chapter Abstract: Group 14 metalloles, specifically aryl‐substituted siloles, germoles, and stannoles, have been shown to exhibit dramatic aggregation‐induced emission (AIE) in mixed‐solvent systems, polymer films, and other phases, with luminescence emission enhancements of over two orders of magnitude. Considerable research efforts have been devoted to these compounds owing to their potential for use in electrooptical devices and chemical sensors. The characteristics and selected applications of metallole AIE are discussed, as is the hypothesis of its origin. Book Description: Edited by Professor Tang, who first discovered this phenomenon, this 2-volume reference addresses the fundamentals of Aggregation-Induced Emission (AIE). The book presents an overview of this rapidly emerging and exciting area of research, inviting scientists to renew their photophysical knowledge and stimulate new developments in the field. Covering fundamental issues of AIE, this reference work also discusses the design and synthesis of AIE-active molecules; includes an introduction to AIE, polymers with AIE characteristics and crystallization-induced emission enhancement. Mechanistic understanding of AIE processes are included, along with a discussion of the progress in the theoretical investigation of AIE mechanism and understanding of AIE mechanism by time-resolved spectrum measurements.https://digitalcommons.usm.maine.edu/facbooks/1487/thumbnail.jp