Journal
CHEMISTRY-A EUROPEAN JOURNAL
Volume 21, Issue 40, Pages 13983-13990Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201501902
Keywords
aggregation; nanoparticles; reversible chromism; self-assembly; solvatochromism
Categories
Funding
- National Nature Science Foundation of China [21175014, 21475011, 21422503, 91027034]
- National Grant of Basic Research Program of China [2011CB915504]
- Fundamental Research Funds for the Central Universities
Ask authors/readers for more resources
Two compounds, 9,10-bis[2-(quinolyl)vinyl]anthracene (BQVA) and 9,10-bis[2-(naphthalen-2-yl)vinyl]anthracene (BNVA), have been synthesised and investigated. Both of them have aggregation-induced enhanced emission (AIEE) properties. Heteroatom-assisted BQVA shows solvatochromism, reversible chromism properties and self-assembly effects. When increasing the solvent polarities, the green solution of BQVA turns to orange with a redshift of the fluorescence emission wavelengths from lambda = 527 to 565 nm. Notably, BQVA exhibits reversible chromism properties, including mechano- and thermochromism. The as-prepared BQVA powders show green fluorescence (lambda(em)=525 nm) and the colour can turn into orange (lambda(em)=573 nm) after grinding. Interestingly, the orange colour can return at high temperature. Based on these reversible chromism properties, a simple and convenient erasable board has been designed. Different from BQVA, non-heteroatom-assisted BNVA has no clear chromic processes. The results obtained from XRD, differential scanning calorimetry, single-crystal analysis and theoretical calculations indicate that the chromic processes depend on the heteroatoms in BQVA. Additionally, BQVA also exhibits excellent self-assembly effects in different solvents. Homogeneous nanospheres are formed in mixtures of tetrahydrofuran and water, which are then doped into silica nanoparticles and treated with 3-aminopropyltriethoxysilane to give amino-functionalised nanoparticles (BQVA-AFNPs). The BQVA-AFNPs could be used to stain protein markers in polyacrylamide gel electrophoresis.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available