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Title: A Zero-Dimensional Organic Seesaw-Shaped Tin Bromide with Highly Efficient Strongly Stokes-Shifted Deep-Red Emission

Abstract

The synthesis and characterization is reported of (C 9NH 20) 2SnBr 4, a novel organic metal halide hybrid with a zero-dimensional (0D) structure, in which individual seesaw-shaped tin (II) bromide anions (SnBr 4 2-) are co-crystallized with 1-butyl-1-methylpyrrolidinium cations (C 9NH 20 +). Upon photoexcitation, the bulk crystals exhibit a highly efficient broadband deep-red emission peaked at 695 nm, with a large Stokes shift of 332 nm and a high quantum efficiency of around 46 %. Furthermore, the unique photophysical properties of this hybrid material are attributed to two major factors: 1) the 0D structure allowing the bulk crystals to exhibit the intrinsic properties of individual SnBr 4 2- species, and 2) the seesaw structure then enables a pronounced excited state structural deformation as confirmed by density functional theory (DFT) calculations.

Authors:
 [1];  [1];  [2];  [3];  [4];  [4];  [4];  [5];  [6]; ORCiD logo [7]
  1. College of Engineering, Tallahassee, FL (United States). Dept. of Chemical and Biomedical Engineering
  2. Beihang Univ., Beijing (China). Dept. of Physics
  3. Materials Science and Engineering Program, Florida State University, Tallahassee FL 32306 USA
  4. Florida State Univ., Tallahassee, FL (United States). Dept. of Chemistry and Biochemistry
  5. Univ. of Southern California, Los Angeles, CA (United States). Dept. of Chemistry
  6. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science and Technology Division, Center for Radiation Detection Materials and Systems
  7. College of Engineering, Tallahassee, FL (United States). Dept. of Chemical and Biomedical Engineering; Beihang Univ., Beijing (China). Dept. of Physics; Florida State Univ., Tallahassee, FL (United States). Dept. of Chemistry and Biochemistry
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); National Science Foundation (NSF)
OSTI Identifier:
1414690
DOE Contract Number:  
AC05-00OR22725; DMR-1709116; CHE-1664661; CHE-1464955
Resource Type:
Journal Article
Journal Name:
Angewandte Chemie (International Edition)
Additional Journal Information:
Journal Volume: 56; Journal ID: ISSN 1433-7851
Publisher:
Wiley
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; deep-red emission; large Stokes shift; organic-inorganic hybrids; seesaw structure; zero-dimensional materials

Citation Formats

Zhou, Chenkun, Lin, Haoran, Shi, Hongliang, Tian, Yu, Pak, Chongin, Shatruk, Michael, Zhou, Yan, Djurovich, Peter, Du, Mao-Hua, and Ma, Biwu. A Zero-Dimensional Organic Seesaw-Shaped Tin Bromide with Highly Efficient Strongly Stokes-Shifted Deep-Red Emission. United States: N. p., 2017. Web. doi:10.1002/anie.201710383.
Zhou, Chenkun, Lin, Haoran, Shi, Hongliang, Tian, Yu, Pak, Chongin, Shatruk, Michael, Zhou, Yan, Djurovich, Peter, Du, Mao-Hua, & Ma, Biwu. A Zero-Dimensional Organic Seesaw-Shaped Tin Bromide with Highly Efficient Strongly Stokes-Shifted Deep-Red Emission. United States. doi:10.1002/anie.201710383.
Zhou, Chenkun, Lin, Haoran, Shi, Hongliang, Tian, Yu, Pak, Chongin, Shatruk, Michael, Zhou, Yan, Djurovich, Peter, Du, Mao-Hua, and Ma, Biwu. Thu . "A Zero-Dimensional Organic Seesaw-Shaped Tin Bromide with Highly Efficient Strongly Stokes-Shifted Deep-Red Emission". United States. doi:10.1002/anie.201710383.
@article{osti_1414690,
title = {A Zero-Dimensional Organic Seesaw-Shaped Tin Bromide with Highly Efficient Strongly Stokes-Shifted Deep-Red Emission},
author = {Zhou, Chenkun and Lin, Haoran and Shi, Hongliang and Tian, Yu and Pak, Chongin and Shatruk, Michael and Zhou, Yan and Djurovich, Peter and Du, Mao-Hua and Ma, Biwu},
abstractNote = {The synthesis and characterization is reported of (C9NH20)2SnBr4, a novel organic metal halide hybrid with a zero-dimensional (0D) structure, in which individual seesaw-shaped tin (II) bromide anions (SnBr42-) are co-crystallized with 1-butyl-1-methylpyrrolidinium cations (C9NH20+). Upon photoexcitation, the bulk crystals exhibit a highly efficient broadband deep-red emission peaked at 695 nm, with a large Stokes shift of 332 nm and a high quantum efficiency of around 46 %. Furthermore, the unique photophysical properties of this hybrid material are attributed to two major factors: 1) the 0D structure allowing the bulk crystals to exhibit the intrinsic properties of individual SnBr42- species, and 2) the seesaw structure then enables a pronounced excited state structural deformation as confirmed by density functional theory (DFT) calculations.},
doi = {10.1002/anie.201710383},
journal = {Angewandte Chemie (International Edition)},
issn = {1433-7851},
number = ,
volume = 56,
place = {United States},
year = {2017},
month = {12}
}

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