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Cooling-Induced NIR Emission Enhancement and Targeting Fluorescence Imaging of Biperylene Monoimide and Glycodendrimer Conjugates
- Source :
- ACS macro letters. 8(4)
- Publication Year :
- 2022
-
Abstract
- Under high concentrations, strong pressure, and low temperature, fluorophores usually exhibit the fluorescence quenching phenomenon. Of significance, the development of aggregation-induced emission (AIE) and pressure-induced emission (PIE) fluorophores has perfectly prevented fluorescence quenching under high concentrations and strong pressure. However, cooling-induced fluorescence quenching in water is still an urgent problem. In this paper, cooling-induced emission (CIE) enhancement based on a biperylene monoimide (BPMI) derivative, BPMI-18Lac, with a conjugated lactose-based glycodendrimer was developed. BPMI-18Lac, as a non-AIE molecule, exhibited the CIE phenomenon with a fluorescent intensity increasing 7-fold when the temperature decreased from 80 to −40 °C. The mechanism was due to the inhibition of the intramolecular electron interactions between the perylene monoimide moieties linked by the C–C single bond. In addition, BPMI-18Lac, as a multivalent glycodendrimer, showed selective fluorescence i...
- Subjects :
- Fluorescence-lifetime imaging microscopy
Polymers and Plastics
Organic Chemistry
02 engineering and technology
Conjugated system
010402 general chemistry
021001 nanoscience & nanotechnology
Photochemistry
01 natural sciences
Fluorescence
0104 chemical sciences
Inorganic Chemistry
chemistry.chemical_compound
chemistry
Intramolecular force
Materials Chemistry
Molecule
Single bond
0210 nano-technology
Perylene
Conjugate
Subjects
Details
- ISSN :
- 21611653
- Volume :
- 8
- Issue :
- 4
- Database :
- OpenAIRE
- Journal :
- ACS macro letters
- Accession number :
- edsair.doi.dedup.....6d2247b24431a728b9d02086b608b41b