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Stimulus-responsive water soluble synthetic nanographene
- Source :
- Science China Chemistry. 64:576-580
- Publication Year :
- 2021
- Publisher :
- Springer Science and Business Media LLC, 2021.
-
Abstract
- Nanographenes (NGs) are exceptionally hydrophobic. They are insoluble in water, preventing the exploration and utilization of their photophysical properties under aqueous conditions. This work discloses an atomically precise water-soluble synthetic NG 1, featuring a 2 nm sp2 carbon skeleton appended with 12 branched triethylene glycol chains. It synergistically combines low critical solution temperature (LCST) behavior and a photothermal effect to create the first thermo- and photo-responsive atomically precise NG functioning in an aqueous solution. The LCST behavior can be attributed to a delicate balance of hydrophobic-hydrophilic interactions, providing a sensitive thermal response to changes over a temperature range of physiological interest (close to 37 °C). Moreover, 1 has considerable photothermal conversion capability, with irradiation of 1 in water by red or near infrared light increasing the solutions temperature to above the clouding point within seconds, leading to a reversible clear-to-turbid transition over many cycles without evident fatigue.
- Subjects :
- Work (thermodynamics)
Aqueous solution
Materials science
Photothermal effect
02 engineering and technology
General Chemistry
Atmospheric temperature range
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
Lower critical solution temperature
0104 chemical sciences
chemistry.chemical_compound
chemistry
Chemical engineering
Thermal
Irradiation
0210 nano-technology
Triethylene glycol
Subjects
Details
- ISSN :
- 18691870 and 16747291
- Volume :
- 64
- Database :
- OpenAIRE
- Journal :
- Science China Chemistry
- Accession number :
- edsair.doi...........e95eef90e0a56f2747633a053dbad4ac