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Insights into supramolecular-interaction-regulated piezochromic carbonized polymer dots
Ting Geng1, Tanglue Feng, Zhiwei Ma
1State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, China. xguanjun@jlu.edu.cn sylu2013@zzu.edu.cn.
Nanoscale
|March 7, 2019
Summary
This study reveals how supramolecular interactions tune the photoluminescence (PL) of carbonized polymer dots (CPDs) under pressure. Enhanced π-π stacking causes red-shifts, while hydrogen bonds induce blue-shifts in CPD fluorescence.
Area of Science:
- Materials Science
- Photochemistry
- Nanotechnology
Background:
- Photoluminescence (PL) is crucial for understanding carbonized polymer dots (CPDs).
- Supramolecular interactions offer methods to regulate material properties.
- Tunable PL in CPDs via supramolecular interactions remains poorly understood.
Purpose of the Study:
- To investigate supramolecular interaction-triggered fluorescence changes in CPDs.
- To explore the piezochromic behaviors of CPDs under high pressure.
- To elucidate the mechanisms behind tunable PL shifts in CPDs.
Main Methods:
- Investigated piezochromic behaviors of CPDs under varying pressure.
- Analyzed the role of π-conjugated systems and hydroxyl groups in PL manipulation.
- Examined π-π stacking and hydrogen bond formation under pressure.
Main Results:
- Supramolecular interactions trigger fluorescence changes in CPDs.
- Increased pressure enhances π-π stacking, causing red-shifted PL peaks.
- Hydroxyl-related hydrogen bond formation leads to blue-shifted PL peaks.
Conclusions:
- Both π-conjugated systems and hydroxyl groups are critical for pressure-induced PL tuning in CPDs.
- Understanding these mechanisms deepens insights into CPD fluorescence.
- CPDs exhibit potential for sensing and light-emitting diode applications due to tunable PL and stability.
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