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Imprinting Chirality onto the Electronic States of Colloidal Perovskite Nanoplatelets

Journal Article · · Advanced Materials
 [1];  [2];  [2];  [2]
  1. Univ. of Pittsburgh, PA (United States); University of Pittsburgh
  2. Univ. of Pittsburgh, PA (United States)

The direct synthesis of chiroptical organic–inorganic methylammonium lead bromide perovskite nanoplatelets that are passivated by R- or S-phenylethylammonium ligands is discussed. The circular dichroism spectra can be divided into two components: (1) a region associated with a charge transfer transition between the ligand and the nanoplatelet, 300–350 nm, and (2) a region corresponding to the excitonic absorption maximum of the perovskite, 400–450 nm. The temperature- and concentration-dependent circular dichroism spectra suggest that the chiro-optical response arises from chiral imprinting by the ligand on the electronic states of the quantum-confined perovskite rather than chiral ligand-induced stereoselective aggregation.

Research Organization:
Univ. of Pittsburgh, PA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Grant/Contract Number:
FG02-07ER46430
OSTI ID:
1604940
Alternate ID(s):
OSTI ID: 1537226
OSTI ID: 1434966
Journal Information:
Advanced Materials, Journal Name: Advanced Materials Journal Issue: 23 Vol. 30; ISSN 0935-9648
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (5)

Circularly polarized light detection using chiral hybrid perovskite journal April 2019
Theoretical Prediction of Chiral 3D Hybrid Organic–Inorganic Perovskites journal March 2019
Exploration of Chiral Organic–Inorganic Hybrid Semiconducting Lead Halides journal May 2019
Tuning optical properties and optical rotation of 3‐mercaptopropionic acid capped organic–inorganic hybrid perovskites journal October 2019
Chiral Perovskites: Promising Materials toward Next‐Generation Optoelectronics journal August 2019