Hierarchical uniform supramolecular conjugated spherulites with suppression of defect emission
File(s)
Published version
Author(s)
Type
Journal Article
Abstract
Easily processed, well-defined, and hierarchical uniform artificial architectures with intrinsic strong crystalline emission properties are necessary for a range of light-emitting optoelectronic devices. Herein, we designed and prepared ordered supramolecular spherulites, comprising planar conformational molecules as primary structures and multiple hydrogen bonds as physical cross-links. Compared with serious aggregation-induced fluorescence quenching (up to 70%), these highly ordered architectures exhibited unique and robust crystalline emission with a high PLQY of 55%, which was much higher than those of other terfluorenes. The primary reasons for the high PLQY are the uniform exciton energetic landscape created in the planar conformation and the highly ordered molecular packing in spherulite. Meanwhile, minimal residual defect (green-band) emissions are effectively suppressed in our oriented crystalline framework, whereas the strong and stable blue light radiations are promoted. These findings may confirm that supramolecular ordered artificial architectures may offer higher control and tunability for optoelectronic applications.
Date Issued
2019-06-28
Date Acceptance
2019-06-03
Citation
iScience, 2019, 16, pp.399-+
ISSN
2589-0042
Publisher
Elsevier
Start Page
399
End Page
+
Journal / Book Title
iScience
Volume
16
Copyright Statement
© 2019 Nanjing Tech University. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
License URL
Identifier
https://www.ncbi.nlm.nih.gov/pubmed/31228748
PII: S2589-0042(19)30184-1
Subjects
AGGREGATION
BEHAVIOR
CONFORMATION
DISORDER
EXCITON DIFFUSION
LONG
MOLECULAR DESIGN
Multidisciplinary Sciences
POLYMER
Science & Technology
Science & Technology - Other Topics
SEMICONDUCTORS
TRANSPORT
Publication Status
Published
Coverage Spatial
United States
Date Publish Online
2019-06-08