Molecular stacking dependent phosphorescence–fluorescence dual emission in a single luminophore for self-recoverable mechanoconversion of multicolor luminescence

Author(s): Hongwei Wu ¹ ^, ² ^, ³ ^, ⁴ ^, ⁵ , Cheng Hang ¹ ^, ² ^, ³ ^, ⁴ ^, ⁵ , Xin Li ⁶ ^, ⁷ ^, ⁸ ^, ⁹ ^, ¹⁰ , Liyuan Yin ¹ ^, ² ^, ³ ^, ⁴ ^, ⁵ , Mingjie Zhu ¹ ^, ² ^, ³ ^, ⁴ ^, ⁵ , Jian Zhang ¹ ^, ² ^, ³ ^, ⁴ ^, ⁵ , Yunyun Zhou ¹ ^, ² ^, ³ ^, ⁴ ^, ⁵ , Hans Ågren ⁶ ^, ⁷ ^, ⁸ ^, ⁹ ^, ¹⁰ , Qing Zhang ¹¹ ^, ¹² ^, ¹³ ^, ¹⁴ ^, ⁵ , Liangliang Zhu ¹ ^, ² ^, ³ ^, ⁴ ^, ⁵

Publication date (Electronic): 2017

Journal: Chemical Communications

Publisher: Royal Society of Chemistry (RSC)

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Abstract

Unique molecular self-assemblies were applied to the design of new materials that can achieve phosphorescence/fluorescence dual emission characteristics.

Abstract

A self-recoverable mechanoconversion of multicolor luminescence was observed by crystallization-induced self-assembly. Such a self-assembly led to the formation of nanorods with different molecular stacking modes, thus making the phosphorescence/fluorescence proportion alterable. Therefore, multicolor luminescence of the single luminophore can be achieved by a straightforward reversible mechanical stimulus.

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Chemical sensors based on amplifying fluorescent conjugated polymers.

Samuel W Thomas, Guy D. Joly, Timothy M. Swager (2007)

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Vesicular perylene dye nanocapsules as supramolecular fluorescent pH sensor systems.

Xin Zhang, M Safont, Frank Würthner … (2009)

Water-soluble, self-assembled nanocapsules composed of a functional bilayer membrane and enclosed guest molecules can provide smart (that is, condition responsive) sensors for a variety of purposes. Owing to their outstanding optical and redox properties, perylene bisimide chromophores are interesting building blocks for a functional bilayer membrane in a water environment. Here, we report water-soluble perylene bisimide vesicles loaded with bispyrene-based energy donors in their aqueous interior. These loaded vesicles are stabilized by in situ photopolymerization to give nanocapsules that are stable over the entire aqueous pH range. On the basis of pH-tunable spectral overlap of donors and acceptors, the donor-loaded polymerized vesicles display pH-dependent fluorescence resonance energy transfer from the encapsulated donors to the bilayer dye membrane, providing ultrasensitive pH information on their aqueous environment with fluorescence colour changes covering the whole visible light range. At pH 9.0, quite exceptional white fluorescence could be observed for such water-soluble donor-loaded perylene vesicles.

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Is Open Access

Tuning the singlet-triplet energy gap: a unique approach to efficient photosensitizers with aggregation-induced emission (AIE) characteristics† †Electronic supplementary information (ESI) available: Synthesis and characterization of the intermediates and molecular orbital data. See DOI: 10.1039/c5sc01733e Click here for additional data file.

Shidang Xu, Youyong Yuan, Xiaolei Cai … (2015)

The efficiency of the intersystem crossing process can be improved by reducing the energy gap between the singlet and triplet excited states (ΔE ST), which offers the opportunity to improve the yield of the triplet excited state.

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Author and article information

Journal

Journal ID (publisher-id): CHCOFS

Title: Chemical Communications

Abbreviated Title: Chem. Commun.

Publisher: Royal Society of Chemistry (RSC)

ISSN (Print): 1359-7345

ISSN (Electronic): 1364-548X

Publication date Created: 2017

Publication date (Electronic): 2017

Volume: 53

Issue: 18

Pages: 2661-2664

Affiliations

[1 ]State Key Laboratory of Molecular Engineering of Polymers

[2 ]Department of Macromolecular Science

[3 ]Fudan University

[4 ]Shanghai 200433

[5 ]China

[6 ]Division of Theoretical Chemistry and Biology

[7 ]School of Biotechnology

[8 ]KTH Royal Institute of Technology

[9 ]SE-10691 Stockholm

[10 ]Sweden

[11 ]Shanghai Key Lab of Polymer and Electrical Insulation

[12 ]School of Chemistry and Chemical Engineering

[13 ]Shanghai Jiaotong University

[14 ]Shanghai 200240

Article

DOI: 10.1039/C6CC04901J

SO-VID: f710857d-40c7-41e8-adce-3eecef7ebf55

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Molecular stacking dependent phosphorescence–fluorescence dual emission in a single luminophore for self-recoverable mechanoconversion of multicolor luminescence

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Most cited references 29

Chemical sensors based on amplifying fluorescent conjugated polymers.

Vesicular perylene dye nanocapsules as supramolecular fluorescent pH sensor systems.

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