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Type: Journal article
Title: SERS and NMR studies of typical aggregation-induced emission molecules
Author: Fang, C.
Xie, Y.
Johnston, M.
Ruan, Y.
Tang, B.
Peng, Q.
Tang, Y.
Citation: The Journal of Physical Chemistry A: Isolated Molecules, Clusters, Radicals, and Ions; Environmental Chemistry, Geochemistry, and Astrochemistry; Theory, 2015; 119(29):8049-8054
Publisher: American Chemical Society
Issue Date: 2015
ISSN: 1089-5639
Statement of
Cheng Fang, Yujun Xie, Martin R. Johnston, Yinlan Ruan, Ben Zhong Tang, Qian Peng, and Youhong Tang
Abstract: Over recent decades, aggregation-induced emission (AIE) molecules have attracted increasing attention. Restriction of intramolecular rotation (RIR) has been widely accepted as the cause of the emission when AIE molecules aggregate into clusters. The intramolecular rotation of AIE molecules can be monitored by molecular vibration spectra such as nuclear magnetic resonance (NMR), infrared, and Raman, especially surface-enhanced Raman scattering (SERS) which has high sensitivity down to a single molecule. We employed SERS and NMR to study the AIE emission mechanism and compared experimental results with simulation data to monitor the RIR. Interestingly, we found that intramolecular rotation was also restricted for individual AIE molecules loaded onto SERS substrate surfaces due to the laid-down configuration.
Rights: © 2015 American Chemical Society
DOI: 10.1021/acs.jpca.5b05478
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