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Remote chirality transfer in low-dimensional hybrid metal halide semiconductors

Journal Article · · Nature Chemistry
 [1];  [2];  [1];  [1];  [3];  [1];  [4];  [1];  [5];  [1];  [6];  [1];  [1];  [6];  [5];  [7];  [7];  [2];  [7];  [7]
  1. National Renewable Energy Laboratory (NREL), Golden, CO (United States)
  2. Univ. of Wisconsin, Madison, WI (United States)
  3. National Renewable Energy Laboratory (NREL), Golden, CO (United States); Colorado School of Mines, Golden, CO (United States)
  4. Univ. of Colorado, Boulder, CO (United States)
  5. Duke Univ., Durham, NC (United States)
  6. Univ. of Utah, Salt Lake City, UT (United States)
  7. National Renewable Energy Laboratory (NREL), Golden, CO (United States); Univ. of Colorado, Boulder, CO (United States)

In hybrid metal halide perovskites, chiroptical properties typically arise from structural symmetry breaking by incorporating a chiral A-site organic cation within the structure, which may limit the compositional space. Here we demonstrate highly efficient remote chirality transfer where chirality is imposed on an otherwise achiral hybrid metal halide semiconductor by a proximal chiral molecule that is not interspersed as part of the structure yet leads to large circular dichroism dissymmetry factors (gCD) of up to 10-2. Density functional theory calculations reveal that the transfer of stereochemical information from the chiral proximal molecule to the inorganic framework is mediated by selective interaction with divalent metal cations. Anchoring of the chiral molecule induces a centro-asymmetric distortion, which is discernible up to four inorganic layers into the metal halide lattice. Additionally, this concept is broadly applicable to low-dimensional hybrid metal halides with various dimensionalities (1D and 2D) allowing independent control of the composition and degree of chirality.

Research Organization:
National Renewable Energy Laboratory (NREL), Golden, CO (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC36-08GO28308
OSTI ID:
2476807
Report Number(s):
NREL/JA-5900-87696; MainId:88471; UUID:61a17641-d186-4115-9fa0-51c3410fcc95; MainAdminId:74181
Journal Information:
Nature Chemistry, Journal Name: Nature Chemistry Vol. 17; ISSN 1755-4330
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

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