Zero-Dimensional (Piperidinium)2MnBr4: Ring Puckering-Induced Isostructural Transition and Strong Electron-Phonon Coupling- Mediated Self-Trapped Exciton Emission

被引：13

作者：

Panda, Debendra Prasad ^{[1
,2
]}

Swain, Diptikanta ^{[3
]}

Sundaresan, A. ^{[1
,2
]}

机构：

[1] Jawaharlal Nehru Ctr Adv Sci Res, Sch Adv Mat, Bangalore 560064, India

[2] Jawaharlal Nehru Ctr Adv Sci Res, Chem & Phys Mat Unit, Bangalore 560064, India

[3] Inst Chem Technol, IndianOil Odisha Campus, Bhubaneswar 751013, India

来源：

INORGANIC CHEMISTRY | 2022年 / 61卷 / 29期

关键词：

HYBRID METAL HALIDE; LIGHT EMISSION; PEROVSKITE; PHOTOLUMINESCENCE; DYNAMICS; TEMPERATURE;

D O I：

10.1021/acs.inorgchem.2c01601

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

We report on the synthesis, structure, and photo physical properties of a lead-free organic-inorganic hybrid halide, (Piperidinium)(2)MnBr4 (PipMBr). It crystallizes in a monoclinic P2(1)/n structure, with isolated MnBr4 tetrahedra representing a zero dimensional compound. It undergoes a reversible isostructural transition at 422/417 K in the heating/cooling cycle owing to the hydrogen-bonding rearrangement mediated by ring puckering of piperidinium cations. This compound exhibits green emission with a photoluminescence quantum yield of 51%. Interestingly, strong electron-longitudinal optical phonon coupling with gamma LO of 237 meV is evidenced from the broadening of the temperature-dependent emission linewidth and the Raman spectrum. Such strong electron-phonon coupling and a relatively low Debye temperature (137 K) suggest the self-trapped exciton emission in this compound.

引用

页码：11377 / 11386

页数：10

共 3 条

[1] Strong Electron-Phonon Coupling inβ-Ga2O3: A Huge Broadeningof Self-Trapped Exciton Emission and a Significant Red Shift of theDirect Bandgap
Cheng, Lu
Zhu, Yanming
Wang, Weiliang
Zheng, Wei
JOURNAL OF PHYSICAL CHEMISTRY LETTERS, 2022, 13 (13): : 3053 - 3058
[2] Boosting Blue Self-Trapped Exciton Emission in All-Inorganic Zero-Dimensional Metal Halide Cs2ZnCl4 via Zirconium (IV) Doping
Tian, Ye
Wei, Qilin
Duan, Lian
Peng, Chengyu
MOLECULES, 2024, 29 (07):
[3] Electron-Phonon Coupling Mediated Self-Trapped-Exciton Emission and Internal Quantum Confinement in Highly Luminescent Zero- Dimensional (Guanidinium)6Mn3X12 (X = Cl and Br)
Panda, Debendra Prasad
Swain, Diptikanta
Chaudhary, Mohit
Mishra, Samita
Bhutani, Garima
De, Arijit K.
Waghmare, Umesh, V
Sundaresan, A.
INORGANIC CHEMISTRY, 2022, 61 (43) : 17026 - 17036

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