TY - JOUR
T1 - Heterostructural Nanosheets Consisting of Polycyclic Aromatic Hydrocarbon Shields and Layered Perovskite Cores for Optical Image Encryption
AU - Wang, Yanchen
AU - Liu, Jiaxin
AU - Wang, Aifei
AU - Gao, Song
AU - Li, Zihao
AU - Li, Junjie
AU - Yan, Suhao
AU - Cheng, Suwen
AU - Song, Zhicheng
AU - Zhang, Yupeng
AU - Dong, Jingjin
AU - Cao, Jiupeng
AU - Wang, Fangfang
AU - Huang, Wei
AU - Qin, Tianshi
N1 - Publisher Copyright:
© 2023 American Chemical Society
PY - 2023/3/2
Y1 - 2023/3/2
N2 - Optical image encryption technology, in which the emission on/off can be controlled by using specially appointed wavelengths, is useful in information storage and protection. Herein, we report a family of sandwiched heterostructural nanosheets, consisting of three-layered (n = 3) perovskite (PSK) frameworks in center with two different polycyclic aromatic hydrocarbons [triphenylene (Tp) and pyrene (Py)] in periphery. Both heterostructural nanosheets (Tp-PSK and Py-PSK) exhibit blue emissions under UVA-I irradiation; however, different photoluminescent properties are observed under UVA-II. A bright emission of Tp-PSK is attributed to the fluorescence resonance energy transfer (FRET) from Tp-shield to PSK-core, whereas the observed photoquenching phenomenon in Py-PSK is due to the competitive absorption between Py-shield and PSK-core. We exploited the unique photophysical features (on/off emission) of the two nanosheets in a narrow UV window (320-340 nm) for optical image encrypting.
AB - Optical image encryption technology, in which the emission on/off can be controlled by using specially appointed wavelengths, is useful in information storage and protection. Herein, we report a family of sandwiched heterostructural nanosheets, consisting of three-layered (n = 3) perovskite (PSK) frameworks in center with two different polycyclic aromatic hydrocarbons [triphenylene (Tp) and pyrene (Py)] in periphery. Both heterostructural nanosheets (Tp-PSK and Py-PSK) exhibit blue emissions under UVA-I irradiation; however, different photoluminescent properties are observed under UVA-II. A bright emission of Tp-PSK is attributed to the fluorescence resonance energy transfer (FRET) from Tp-shield to PSK-core, whereas the observed photoquenching phenomenon in Py-PSK is due to the competitive absorption between Py-shield and PSK-core. We exploited the unique photophysical features (on/off emission) of the two nanosheets in a narrow UV window (320-340 nm) for optical image encrypting.
UR - http://www.scopus.com/inward/record.url?scp=85148674700&partnerID=8YFLogxK
U2 - 10.1021/acs.jpclett.3c00316
DO - 10.1021/acs.jpclett.3c00316
M3 - 文章
C2 - 36795606
AN - SCOPUS:85148674700
SN - 1948-7185
VL - 14
SP - 2047
EP - 2055
JO - Journal of Physical Chemistry Letters
JF - Journal of Physical Chemistry Letters
IS - 8
ER -