One-Dimensional Organic-Inorganic Lead Bromide Hybrids with Excitation-Dependent White-Light Emission Templated by Pyridinium Derivatives

Chen, Runan1; Sun, Chen1; Cheng, Xiaohua2; Lin, Yufan2; Zhou, Jiaqian1; Yin, Jun3; Cui, Bin-Bin2; Mao, Lingling1

2023-06-07

10.1021/acs.inorgchem.3c00997

INORGANIC CHEMISTRY   影响因子和分区

0020-1669

1520-510X

["Organic-inorganichybrid metal halides have attracted widespreadattention due to their excellent tunability and versatility. Here,we have selected pyridinium derivatives with different substituentgroups or substitution positions as the organic templating cationsand obtained six 1D chain-like structures. They are divided into threetypes: type I (single chain), type II (double chain), and type III(triple chain), with tunable optical band gaps and emission properties.Among them, only (2,4-LD)PbBr3 (2,4-LD = 2,4-lutidine)shows an exciton-dependent emission phenomenon, ranging from strongyellow-white to weak red-white light. By comparing its photoluminescencespectrum with that of its bromate (2,4-LD)Br, it is found that thestrong yellow-white emission at 534 nm mainly came from the organiccomponent. Furthermore, through a comparison of the fluorescence spectraand lifetimes of (2,4-LD)PbBr3 and (2-MP)PbBr3 (2-MP = 2-methylpyridine) with similar structures at different temperatures,we confirm that the tunable emission of (2,4-LD)PbBr3 comesfrom different photoluminescent sources corresponding to organic cationsand self-trapped excitons. Density functional theory calculationsfurther reveal that (2,4-LD)PbBr3 has a stronger interactionbetween organic and inorganic components compared to (2-MP)PbBr3. This work highlights the importance of organic templatingcations in hybrid metal halides and the new functionalities associatedwith them.","Three types of 1D lead bromidecompounds are synthesizedusing pyridinium derivatives as organic templating cations. Thesecompounds exhibit diverse connections of the Pb-Br inorganicchains: type I (face-sharing single chains), type II (edge-sharingdouble chains), and type III (edge-sharing triple chains), with tunableoptical band gaps and emission properties. Among them, only (2,4-LD)PbBr3 displays exciton-dependent emission from intense yellow-whiteto weak red-white, corresponding to organic cations and self-trappedexcitons."]

SCI ; EI

英语

NI论文

第一 ; 通讯

National Natural Science Foundation of China (NSFC)[22275077] ; Stable Support Plan Program of Shenzhen Natural Science Fund[20220814233319001] ; Hong Kong Polytechnic University[P0042930]

Chemistry

Chemistry, Inorganic & Nuclear

WOS:001008358100001

AMER CHEMICAL SOC

20232714330335

Bromine compounds ; Density functional theory ; Energy gap ; Excitons ; Metal halides ; organic-inorganic materials ; Perovskite ; Photoluminescence spectroscopy ; Positive ions

Minerals:482.2 ; Optical Devices and Systems:741.3 ; Chemical Products Generally:804 ; Probability Theory:922.1 ; Atomic and Molecular Physics:931.3 ; Quantum Theory; Quantum Mechanics:931.4 ; Optical Variables Measurements:941.4

CHEMISTRY

Web of Science

1.Southern Univ Sci & Technol, Dept Chem, Shenzhen 518055, Guangdong, Peoples R China
2.Beijing Inst Technol BIT, Adv Res Inst Multidisciplinary Sci, Sch Mat Sci & Engn, Schools Chem & Chem Engn, Beijing 100081, Peoples R China
3.Hong Kong Polytechn Univ, Dept Appl Phys, Hong Kong 999077, Peoples R China

Chen, Runan,Sun, Chen,Cheng, Xiaohua,et al. One-Dimensional Organic-Inorganic Lead Bromide Hybrids with Excitation-Dependent White-Light Emission Templated by Pyridinium Derivatives[J]. INORGANIC CHEMISTRY,2023,62(24):9722-9731.

Chen, Runan.,Sun, Chen.,Cheng, Xiaohua.,Lin, Yufan.,Zhou, Jiaqian.,...&Mao, Lingling.(2023).One-Dimensional Organic-Inorganic Lead Bromide Hybrids with Excitation-Dependent White-Light Emission Templated by Pyridinium Derivatives.INORGANIC CHEMISTRY,62(24),9722-9731.

Chen, Runan,et al."One-Dimensional Organic-Inorganic Lead Bromide Hybrids with Excitation-Dependent White-Light Emission Templated by Pyridinium Derivatives".INORGANIC CHEMISTRY 62.24(2023):9722-9731.