SERS and NMR Studies of Typical Aggregation-induced Emission Molecules

Cheng Fang, Yujun Xie, Martin Johnston, Yinlan Ruan, Ben Tang, Qian Peng, Youhong Tang

    Research output: Contribution to journalArticlepeer-review

    12 Citations (Scopus)

    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. (Graph Presented).

    Original languageEnglish
    Pages (from-to)8049-8054
    Number of pages6
    JournalJournal of Physical Chemistry A
    Volume119
    Issue number29
    DOIs
    Publication statusPublished - 2015

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