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Chirality Control of Electron Transfer in Quantum Dot Assemblies

Journal Article · · Journal of the American Chemical Society
DOI:https://doi.org/10.1021/jacs.7b04639· OSTI ID:1604895
 [1];  [2];  [3];  [4];  [2]
  1. Univ. of Pittsburgh, PA (United States); University of Pittsburgh
  2. Univ. of Pittsburgh, PA (United States)
  3. Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
  4. Duke Univ., Durham, NC (United States)

Electron spin and molecular chirality are emerging as factors that can be used effectively to direct charge flow at the molecular scale. We discuss order of magnitude effects of molecular chirality on electron-transfer rates between quantum dots (QDs) in chiral QD assemblies. Indeed, both the circular polarization of the light that excites the electron donor and the imprinted chirality of the acceptor QDs affect the dot-to-dot electron-transfer kinetics. We define a polarization for the electron-transfer rate constant and show that it correlates with the strength of the acceptor QD circular dichroism (CD) spectrum. These results imply that the CD strength of the QD exciton transition(s) may be used as a predictor for the spin-dependent electron transfer, indicating that chiral imprinting of the dots may lie at the origin of this phenomenon.

Research Organization:
Univ. of Pittsburgh, PA (United States); Duke Univ., Durham, NC (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Grant/Contract Number:
FG02-07ER46430; SC0010662
OSTI ID:
1604895
Alternate ID(s):
OSTI ID: 1532909
Journal Information:
Journal of the American Chemical Society, Journal Name: Journal of the American Chemical Society Journal Issue: 26 Vol. 139; ISSN 0002-7863
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

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Cited By (6)

Light-driven molecular switch for reconfigurable spin filters journal June 2019
Imprinting Chirality onto the Electronic States of Colloidal Perovskite Nanoplatelets journal April 2018
Circularly Polarized Luminescence in Nanoassemblies: Generation, Amplification, and Application journal August 2019
Förster Resonance Energy Transfer-Activated Processes in Smart Nanotheranostics Fabricated in a Sustainable Manner journal September 2018
Chiral molecules and the electron spin journal March 2019
Tuning of chiral construction, structural diversity, scale transformation and chiroptical applications journal January 2018

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