TY - JOUR
T1 - Achieving Ultralong Room-Temperature Phosphorescence in Two-Dimensional Metal Halide Perovskites by Alkyl Chain Engineering
AU - Chen, Xiangyu
AU - Ge, Lei
AU - Tang, Ying
AU - Han, Chaofei
AU - Yu, Yihang
AU - Liu, Siyu
AU - Li, Mingguang
AU - Zhang, Peng
AU - Xu, Ligang
AU - Yin, Jun
AU - Lv, Wenzhen
AU - Chen, Runfeng
N1 - Publisher Copyright:
© 2023 American Chemical Society.
PY - 2023/9/28
Y1 - 2023/9/28
N2 - Two-dimensional (2D) metal halide perovskites with highly efficient ultralong room-temperature phosphorescence (URTP) are rare due to their uncertain structures and complicated intermolecular interactions. Herein, by varying the alkyl length of organic units, we synthesized two single-component 2D metal hybrid perovskites, i.e., B-MACC and B-EACC, with obvious URTP emission. In particular, B-EACC exhibits a green-yellow URTP emission with an ultralong lifetime (579 ms) and a high efficiency (14.86%). It is found that the molecular packing of B-EA+ cations because of the presence one more carbon in the alkyl chain affords strong hydrogen bonding and π-π stacking interactions, which immobilizes and reduces the triplet exciton quenching. Moreover, B-MACC and B-EACC with space-time dual-resolved characteristics can be utilized for dynamic information encryption and optical logic gate applications. This study is the first to disclose the relation between the characteristics of molecular packing and the resultant URTP of 2D metal hybrid perovskites, significantly advancing the development of next-generation URTP materials for versatile applications.
AB - Two-dimensional (2D) metal halide perovskites with highly efficient ultralong room-temperature phosphorescence (URTP) are rare due to their uncertain structures and complicated intermolecular interactions. Herein, by varying the alkyl length of organic units, we synthesized two single-component 2D metal hybrid perovskites, i.e., B-MACC and B-EACC, with obvious URTP emission. In particular, B-EACC exhibits a green-yellow URTP emission with an ultralong lifetime (579 ms) and a high efficiency (14.86%). It is found that the molecular packing of B-EA+ cations because of the presence one more carbon in the alkyl chain affords strong hydrogen bonding and π-π stacking interactions, which immobilizes and reduces the triplet exciton quenching. Moreover, B-MACC and B-EACC with space-time dual-resolved characteristics can be utilized for dynamic information encryption and optical logic gate applications. This study is the first to disclose the relation between the characteristics of molecular packing and the resultant URTP of 2D metal hybrid perovskites, significantly advancing the development of next-generation URTP materials for versatile applications.
UR - http://www.scopus.com/inward/record.url?scp=85174696537&partnerID=8YFLogxK
U2 - 10.1021/acs.jpclett.3c01794
DO - 10.1021/acs.jpclett.3c01794
M3 - Journal article
AN - SCOPUS:85174696537
SN - 1948-7185
VL - 14
SP - 8638
EP - 8647
JO - Journal of Physical Chemistry Letters
JF - Journal of Physical Chemistry Letters
IS - 38
ER -