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Title: Tunable Crystallinity and Charge Transfer in Two-Dimensional G-Quadruplex Organic Frameworks

Journal Article · · Angewandte Chemie (International Edition)
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  1. Department of Chemistry, Argonne-Northwestern Solar Energy Research (ANSER) Center, and Institute for Sustainability and Energy at Northwestern, Northwestern University, Evanston IL USA
  2. Department of Chemical & Biological Engineering, Northwestern University, Evanston IL USA
  3. Applied Physics Graduate Program, Northwestern University, Evanston IL USA
  4. Department of Chemistry, Argonne-Northwestern Solar Energy Research (ANSER) Center, and Institute for Sustainability and Energy at Northwestern, Northwestern University, Evanston IL USA; Department of Chemistry, King Abdulaziz University, Jeddah Saudi Arabia
  5. Department of Chemistry, Argonne-Northwestern Solar Energy Research (ANSER) Center, and Institute for Sustainability and Energy at Northwestern, Northwestern University, Evanston IL USA; Applied Physics Graduate Program, Northwestern University, Evanston IL USA

Abstract DNA G‐quadruplex structures were recently discovered to provide reliable scaffolding for two‐dimensional organic frameworks due to the strong hydrogen‐bonding ability of guanine. Herein, 2,7‐diaryl pyrene building blocks with high HOMO energies and large optical gaps are incorporated into G‐quadruplex organic frameworks. The adjustable substitution on the aryl groups provides an opportunity to elucidate the framework formation mechanism; molecular non‐planarity is found to be beneficial for restricting interlayer slippage, and the framework crystallinity is highest when intermolecular interaction and non‐planarity strike a fine balance. When guanine‐functionalized pyrenes are co‐crystallized with naphthalene diimide, charge‐transfer (CT) complexes are obtained. The photophysical properties of the pyrene‐only and CT frameworks are characterized by UV/Vis and steady‐state and time‐resolved photoluminescence spectroscopies, and by EPR spectroscopy for the CT complex frameworks.

Research Organization:
Northwestern Univ., Evanston, IL (United States); Univ. of Minnesota, Minneapolis, MN (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
FG02-87ER13808; FG02-99ER14999; AC02-05CH11231; SC0008688
OSTI ID:
1537228
Alternate ID(s):
OSTI ID: 1424538
Journal Information:
Angewandte Chemie (International Edition), Vol. 57, Issue 15; ISSN 1433-7851
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 24 works
Citation information provided by
Web of Science

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