Journal
ACS OMEGA
Volume 5, Issue 20, Pages 11547-11552Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsomega.0c00770
Keywords
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Funding
- JST PRESTO [JPMJPR1515]
- Research Foundation, Flanders [G.0B39.15, G.0B49.15, G098319N, G0D4519N, G081916N, ZW15_09-GOH6316]
- KU Leuven Research Fund [C14/15/053]
- JSPS Kakenhi [JP17H03003]
- Erasmus + grant
- FWO [1S33117N, 12X1419N]
- NWO Chemische Wetenschappen VIDI grant [723.015.001]
- Ministry of Education, Culture and Science [024.001.035]
- Flemish government through long-term structural funding Methusalem (CASAS2) [Meth/15/04]
- Hercules Foundation [HER/11/14]
- JSPS Core-to-Core Program, A. Advanced Research Networks
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Despite having great value across a wide variety of scientific fields, two-photon polymerizations currently suffer from two significant problems: the need for photoinitiators, which generate toxic side products, and the irreversibility of the process. Hence, the design of a versatile approach that circumvents these issues represents a major scientific challenge. Herein, we report a two-photon absorption strategy where reversible [2 + 2] cycloaddition of bis-thymines was achieved without the need for any photoinitiator. The cycloaddition and cycloreversion reactions could be induced by simply changing the irradiation wavelength, and repeated writing and erasing cycles were performed. The simplicity, reversibility, and biocompatibility of this strategy open up a whole new toolbox for applications across a wide variety of scientific fields.
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