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This content will become publicly available on October 2, 2018

Title: Photon Upconversion Using Baird-Type (Anti)Aromatic Quinoidal Naphthalene Derivative as a Sensitizer

In this study, a naphtho-p-quinodimethane (QDM) exhibiting Baird’s 4n - π antiaromaticity was used as green photonsharvesting chromophore to sensitize perylene (Per) leading to upconverted blue photoluminescence. The solution phase QDM → Per triplet energy transfer (TET) could not be unraveled via the Stern-Volmer method, but transient absorption measurements revealed that the kinetics of T 1 → T n for QDM (τ = 1.4 μs) was 1 order of magnitude reduced (τ= 0.17 μs) as a result of 3(Per)* formation. Lastly, we demonstrated that incident light with power densities in the microwatt regime is sufficient to perform photon upconversion using the present set of molecular systems.
Authors:
 [1] ;  [2] ;  [2] ; ORCiD logo [1]
  1. Illinois Inst. of Technology, Chicago, IL (United States). Department of Chemistry
  2. Argonne National Lab. (ANL), Argonne, IL (United States). Center for Nanoscale Materials
Publication Date:
Grant/Contract Number:
AC02-06CH11357
Type:
Accepted Manuscript
Journal Name:
Journal of Physical Chemistry. C
Additional Journal Information:
Journal Volume: 121; Journal Issue: 42; Journal ID: ISSN 1932-7447
Publisher:
American Chemical Society
Research Org:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); Illinois Institute of Technology, Chicago, IL (United States)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
OSTI Identifier:
1427722