Related Experiment Video
Updated: Feb 22, 2026

Chemiluminescence-based Assays for Detection of Nitric Oxide and its Derivatives from Autoxidation and Nitrosated Compounds
Published on: February 16, 2022
Blue-shifted aggregation-induced emission of siloles by simple structural modification and their application as nitro
Jiwon Lee1, Yoona Park, Joori Jung
1Department of Chemistry, Seoul Women's University, Seoul 01797, South Korea. wshan@swu.ac.kr.
Abstract:
To induce blue-shifted emission of siloles, two tolyl-substituted derivatives - 1,1-diphenyl-2,3,4,5-tetra(m-tolyl)-1H-silole (m-TS) and 1,1-diphenyl-2,3,4,5-tetra(o-tolyl)-1H-silole (o-TS) - were prepared, and their photophysical properties were compared with those of a reference compound, hexaphenylsilole (HPS). By substituting methyl groups at ortho positions of peripheral tetraphenyl rings on the silacyclopentadiene ring, intramolecular rotations could be successfully controlled and the photophysical properties were varied, while substituting methyl groups at meta positions showed similar photophysical properties compared with the case of HPS. That is, simple structural modification at the ortho position significantly affects the geometry and the photophysical properties of silole, which leads to blue-shifted emission. Finally, two tolyl-substituted siloles and HPS were employed as chemosensors for the detection of nitro explosives, and o-TS showed the highest sensing ability.
Related Concept Videos
Photoluminescence: Applications
Aryldiazonium Salts to Azo Dyes: Diazo Coupling
NMR Spectroscopy: Chemical Shift Overview
For instance, the proton...
2° Amines to N-Nitrosamines: Reaction with NaNO2

