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Unimolecular Photoconversion of Multicolor Luminescence on Hierarchical Self-Assemblies
KTH, School of Biotechnology (BIO), Theoretical Chemistry and Biology.ORCID iD: 0000-0001-6508-8355
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2013 (English)In: Journal of the American Chemical Society, ISSN 0002-7863, E-ISSN 1520-5126, Vol. 135, no 13, 5175-5182 p.Article in journal (Refereed) Published
Abstract [en]

Facile tuning of photophysical properties is highly desirable for boosting the performance and versatility of photoluminescent materials. In an attempt to overcome the challenge of achieving the photoswitching of multicolor luminescence on unimolecular platforms, we here report a novel hierarchical self-assembly of a cyanostilbene-naphthalimide dyad as the realization of phototunable luminescence at the unimolecular level. The work takes advantage of the photoisomerization of the cyanostilbene moiety from the Z form to its E form, which causes a morphological disorder in the molecular self-assembly and gives rise to a dual fluorescent characteristic accompanied by a progressive luminescent color conversion from yellow to green and finally to blue. Such systems with convertible multicolor luminescence might exhibit application potentials for unimolecular selective imaging and labeling, as exemplified by the cell imaging studies presented in this work.

Place, publisher, year, edition, pages
2013. Vol. 135, no 13, 5175-5182 p.
Keyword [en]
Mesoporous Silica Nanoparticles, Intramolecular Charge-Transfer, Light-Emitting Devices, Solar-Cells, Viscosity Sensitivity, Highly Efficient, In-Vivo, Fluorescent, Systems, Sensor
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-122332DOI: 10.1021/ja400456hISI: 000317259300048Scopus ID: 2-s2.0-84875766983OAI: oai:DiVA.org:kth-122332DiVA: diva2:622478
Note

QC 20130522

Available from: 2013-05-22 Created: 2013-05-20 Last updated: 2017-12-06Bibliographically approved

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Li, XinÅgren, Hans

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