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Diarylethenes with a Narrow Singlet–Triplet Energy Gap Sensitizer: a Simple Strategy for Efficient Visible-Light Photochromism
KTH, School of Biotechnology (BIO), Theoretical Chemistry and Biology.
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2018 (English)In: Advanced Optical Materials, ISSN 2162-7568, E-ISSN 2195-1071, Vol. 6, no 6, article id 1700847Article in journal (Refereed) Published
Abstract [en]

All-organic visible-light photochromism is reported here via a novel strategy with narrow singlet–triplet energy gap (ΔEST) materials as a sensitizer. Taking advantage of the narrow ΔEST feature and the triplet–triplet energy transfer process, highly efficient photochromism of diarylethenes (DAEs) with both ring-open and ring-closure excitations shifted to visible light region is successfully achieved. Moreover, the wavelength of the visible excitation light can be easily modulated (e.g., from 405 to 470 nm) by elaborate selection of matched sensitized molecules. The “write-and-erase” application of this photochromic system in polymer films is further demonstrated. This strategy provides a simple and versatile selection of well-matched DAE/sensitizer couples for visible-light photochromism without complicated molecular design.

Place, publisher, year, edition, pages
Wiley-VCH Verlag , 2018. Vol. 6, no 6, article id 1700847
Keywords [en]
diarylethene, photochromism, singlet–triplet energy gap, triplet–triplet energy transfer, visible light, Energy efficiency, Energy gap, Energy transfer, Olefins, Polymer films, Diarylethenes, Excitation light, Novel strategies, Photochromic systems, Singlet-triplet energy gap, Triplet-triplet energy transfer, Visible light region, Light
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-227387DOI: 10.1002/adom.201700847ISI: 000428348200001Scopus ID: 2-s2.0-85041223477OAI: oai:DiVA.org:kth-227387DiVA, id: diva2:1211117
Note

Export Date: 9 May 2018; Article; Correspondence Address: Zhang, J.; Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science & TechnologyChina; email: zhangjunji@ecust.edu.cn; Funding details: B16017, Provincial Foundation for Excellent Young Talents of Colleges and Universities of Anhui Province; Funding details: 21402050, NSFC, National Natural Science Foundation of China; Funding details: 21420102004, NSFC, National Natural Science Foundation of China; Funding text: This research was supported by the National Natural Science Foundation of China (Grant Nos. 21402050 and 21420102004) and the Programme of Introducing Talents of Discipline to Universities (B16017). QC 20180530

Available from: 2018-05-30 Created: 2018-05-30 Last updated: 2018-05-30Bibliographically approved

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