TY - JOUR
T1 - Aggregation-Induced Fluorescence Enhancement for Efficient X-ray Imaging Scintillators and High-Speed Optical Wireless Communication
AU - Nadinov, Issatay
AU - Yin, Jun
AU - Gutierrez Arzaluz, Luis
AU - Alkhazragi, Omar
AU - Ng, Tien Khee
AU - Eddaoudi, Mohamed
AU - Alshareef, Husam N.
AU - Bakr, Osman
AU - Ooi, Boon S.
AU - Mohammed, Omar F.
N1 - KAUST Repository Item: Exported on 2022-10-31
Acknowledgements: This work was supported by the King Abdullah University of Science and Technology (KAUST). TKN and BSO acknowledge the support from the U.S. Office of Naval Research Global under award number N62909-19-1-2079 (KAUST reference number: RGC/3/4119-01-01).
PY - 2022/7/29
Y1 - 2022/7/29
N2 - Aggregation of some chromophores generates very strong fluorescence signals due to the tight molecular packing and highly restricted vibrational motions in the electronically excited states. Such an aggregation-induced emission enhancement enables great strides in biomedical imaging, security screening, sensing, and light communication applications. Here, we realized efficient utilization of a series of aggregation-induced emission luminogens (AIEgens) in X-ray imaging scintillators and optical wireless communication (OWC) technology. Ultrafast time-resolved laser spectroscopic experiments and high-level density functional theory (DFT) calculations clearly demonstrate that a significant increase in the rotational energy barrier in the aggregated state of AIEgens is observed, leading to highly restricted molecular vibrations and suppressed nonradiative processes. AIEgen-based scintillators exhibit a high X-ray imaging resolution of 16.3 lp mm–1, making them excellent candidates for X-ray radiography and security inspections. In addition, these AIEgens show a broad -3-dB modulation bandwidth of ∼110 MHz and high net data rates of ∼600 Mb/s, demonstrating their high potential for application in the field of high-speed OWC.
AB - Aggregation of some chromophores generates very strong fluorescence signals due to the tight molecular packing and highly restricted vibrational motions in the electronically excited states. Such an aggregation-induced emission enhancement enables great strides in biomedical imaging, security screening, sensing, and light communication applications. Here, we realized efficient utilization of a series of aggregation-induced emission luminogens (AIEgens) in X-ray imaging scintillators and optical wireless communication (OWC) technology. Ultrafast time-resolved laser spectroscopic experiments and high-level density functional theory (DFT) calculations clearly demonstrate that a significant increase in the rotational energy barrier in the aggregated state of AIEgens is observed, leading to highly restricted molecular vibrations and suppressed nonradiative processes. AIEgen-based scintillators exhibit a high X-ray imaging resolution of 16.3 lp mm–1, making them excellent candidates for X-ray radiography and security inspections. In addition, these AIEgens show a broad -3-dB modulation bandwidth of ∼110 MHz and high net data rates of ∼600 Mb/s, demonstrating their high potential for application in the field of high-speed OWC.
UR - http://hdl.handle.net/10754/679990
UR - https://pubs.acs.org/doi/10.1021/acsmaterialslett.2c00498
UR - http://www.scopus.com/inward/record.url?scp=85136097300&partnerID=8YFLogxK
U2 - 10.1021/acsmaterialslett.2c00498
DO - 10.1021/acsmaterialslett.2c00498
M3 - Article
SN - 2639-4979
SP - 1668
EP - 1675
JO - ACS Materials Letters
JF - ACS Materials Letters
ER -