Warning: Undefined array key "mm" in /www/wwwroot/www.ai-bt.com/si.php on line 10 Deprecated: trim(): Passing null to parameter #1 ($string) of type string is deprecated in /www/wwwroot/www.ai-bt.com/si.php on line 10 Color-Change Photoswitching of an Alkynylpyrene Excimer Dye.

Literature DB >> 28474388

Color-Change Photoswitching of an Alkynylpyrene Excimer Dye.

Ke Min Chan¹, Dominik K Kölmel¹, Shenliang Wang¹, Eric T Kool¹.

Abstract

We describe a photoswitchable DNA-based dimeric dye that visibly changes fluorescence from green to blue upon UV irradiation. A novel bis-alkyne-dependent [2+2+2] cycloaddition is proposed as a mechanism for the color change in air. The photoinduced structural switching results in spatial separation of stacked pyrene units, thereby causing selective loss of the excimer emission. We demonstrate and suggest several applications for this novel photoswitch.

Entities: CellLine Chemical Gene Species

Keywords: excimer; fluorescence; oligodeoxyfluoroside; photochemistry; photoswitching

Mesh：

Substances：

Year: 2017 PMID： 28474388 PMCID： PMC5665017 DOI： 10.1002/anie.201701235

Source DB: PubMed Journal: Angew Chem Int Ed Engl ISSN： 1433-7851 Impact factor: 15.336

23 in total

Review 1. Artificial Molecular Machines.

Authors: Sundus Erbas-Cakmak; David A Leigh; Charlie T McTernan; Alina L Nussbaumer
Journal: Chem Rev Date: 2015-09-08 Impact factor: 60.622

Color-Change Photoswitching of an Alkynylpyrene Excimer Dye.

Review 1. Artificial Molecular Machines.

Review 2. Bioorthogonal chemistry: recent progress and future directions.

3. Polyfluorophores on a DNA backbone: a multicolor set of labels excited at one wavelength.

4. On the mechanism of Trolox as antiblinking and antibleaching reagent.

Review 5. Fluorescent probes for super-resolution imaging in living cells.

Review 6. How to switch a fluorophore: from undesired blinking to controlled photoswitching.

7. Pattern-based detection of toxic metals in surface water with DNA polyfluorophores.

8. A colorimetric method for measurement of the (peroxidase-mediated) oxidation of 3,3'-diaminobenzidine.

Review 9. The development and application of optogenetics.

10. Large-scale detection of metals with a small set of fluorescent DNA-like chemosensors.

1. Luminescent Carbon Dot Mimics Assembled on DNA.

Review 2. Fluorescent nucleobases as tools for studying DNA and RNA.

3. Fluorescence modulation via photoinduced spin crossover switched energy transfer from fluorophores to Fe^II ions.