Abstract
The organic metal halide hybrids welcome a new member with a one-dimensional (1D) tubular structure. Herein we report the synthesis and characterization of a single crystalline bulk assembly of organic metal halide nanotubes, (C6H13N4)3Pb2Br7. In a metal halide nanotube, six face-sharing metal halide dimers (Pb2Br95-) connect at the corners to form rings that extend in one dimension, of which the inside and outside surfaces are coated with protonated hexamethylenetetramine (HMTA) cations (C6H13N4+). This unique 1D tubular structure possesses highly localized electronic states with strong quantum confinement, resulting in the formation of self-trapped excitons that give strongly Stokes shifted broadband yellowish-white emission with a photoluminescence quantum efficiency (PLQE) of ∼7%. Having realized single crystalline bulk assemblies of two-dimensional (2D) wells, 1D wires, and now 1D tubes using organic metal halide hybrids, our work significantly advances the research on bulk assemblies of quantum-confined materials.
| Original language | English |
|---|---|
| Pages (from-to) | 8400-8404 |
| Number of pages | 5 |
| Journal | Chemical Science |
| Volume | 8 |
| Issue number | 12 |
| DOIs | |
| State | Published - 2017 |
| Externally published | Yes |
Funding
In summary, we have prepared for the rst time a novel single crystalline organic metal halide hybrid containing arrays of metal halide nanotubes via a simple bottom up solution self-assembly process. Our work bridges the research of organic metal halide hybrids with functional nanotube materials. The excitement of our work lies not only in the specic achievements, but also in what it represents in terms of new The authors acknowledge the Florida State University for the support through the Energy and Materials Initiative and GAP Commercialization Grant Program. C. Z., Y. T., and B. M. acknowledge funding support from the National Science Foundation (NSF) (DMR-1709116). J. N. and T. S. acknowledge the funding from the NSF (DMR-1606952). The work at the NHMFL was supported by the NSF Cooperative Agreement No. DMR-1157490, the State of Florida and the Department of Energy. The work at ORNL was supported by the Department of Energy, Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division. The authors thank Dr Kenneth Hanson at FSU for providing access to a spectrophotometer and Dr Peter Djurovich at the University of Southern California for the help with PLQE measurement.
| Funders | Funder number |
|---|---|
| National Science Foundation | DMR-1709116, DMR-1606952, 1606952 |
| U.S. Department of Energy | |
| Directorate for Mathematical and Physical Sciences | 1157490, 1709116 |
| Office of Science | |
| Basic Energy Sciences | |
| Division of Materials Sciences and Engineering |