Photo‐Controlled Macroscopic Self‐Assembly Based on Photo‐Switchable Hetero‐Complementary Quadruple Hydrogen Bonds
- 30 September 2021
- journal article
- research article
- Published by Wiley in Chemistry – An Asian Journal
- Vol. 16 (23), 3886-3889
- https://doi.org/10.1002/asia.202101076
Abstract
A photo-switchable hetero-complementary quadruple H-bonding array, which consists of an azobenzene-derived ureidopyrimidinone (UPy) module ( Azo-UPy ) and a nonphotoactive diamidonaphthyridine (DAN) derivative ( Napy-1 ), is constructed based on a reversible photo-locking approach. Upon UV (390 nm) / Vis (460 nm) light irradiations, photo-switchable quadruple H-bonded dimerization between Azo-UPy and Napy-1 can be achieved with exhibiting 4.8 × 10 4 -fold differences in binding strength (ON/OFF ratios). Furthermore, smart polymeric gels with unique photo-controlled macroscopic self-assembly behavior can be fabricated by introducing such quadruple H-bonding array as photo-regulable noncovalent interfacial connections.Keywords
Funding Information
- National Natural Science Foundation of China (22071220)
- Natural Science Foundation of Zhejiang Province (LQ19B020006)
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