The DOI matches its Crossref record; 3 of the 3 references it cites were found in a registry or an index.
Activating Room Temperature Long Afterglow of Carbon Dots via Covalent Fixation
Abstract
The achievement of long afterglow in aqueous solution and as well as with small effects of dissolved oxygen is critical for its applications, but this is still a highly difficult and challenging task. Herein, a novel strategy for facilely preparing room temperature long afterglow material is reported via covalently fixing carbon dots (CDs) onto colloidal nanosilica (nSiO 2 ). The as-obtained materials (named m-CDs@nSiO 2 ) show not only an unexpected long afterglow emission in water dispersion (lifetime as high as 0.703 s) but also with small effects of the dissolved oxygen. Further studies revealed that the observed long afterglow of m-CDs@nSiO 2 possesses a predominant delayed fluorescence nature and mixed with a portion of phosphorescence. Some key knowledge that can be concluded from this study are (i) covalent interaction could be employed as an option to fix and rigidify triplet emission species; (ii) covalent bonds fixation strategy could behave as a better alternative than that of the frequently used hydrogen/halogen bonds for stabilizing triplets, because this benefits in extending the occurrence of long afterglow from only solid to solution/dispersion forms; and (iii) the containing unsaturated bonds (e.g., C═C) on the surface of CDs make them to be self-protection agents from the usual quenching effects of oxygen to the triplets due to their capabilities of reaction with oxygen during the irradiation process. On the basis of the unique long afterglow features of m-CDs@nSiO 2 in water dispersion and oxygen insensitivity, a moisture-related strategy for high-level information protection is proposed and demonstrated.
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Cites
Physical Mechanisms of Generation and Deactivation of Singlet Oxygen
Schweitzer, C., & Schmidt, R. (2003) · Chemical Reviews · doi:10.1021/cr010371d · Cited by 2,123
Activating efficient phosphorescence from purely organic materials by crystal design
Bolton, O., Lee, K., Kim, H.-J., Lin, K. Y., & Kim, J. (2011) · Nature Chemistry · doi:10.1038/nchem.984 · Cited by 1,662
Xiong, X., Song, F., Wang, J., Zhang, Y., Xue, Y., Sun, L., Jiang, N., Gao, P., Tian, L., & Peng, X. (2014) · Journal of the American Chemical Society · doi:10.1021/ja502292p · Cited by 326
Cited by
Su, Y., Phua, S. Z. F., Li, Y., Zhou, X., Jana, D., Liu, G., Lim, W. Q., Ong, W. K., Yang, C., & Zhao, Y. (2018) · Science Advances · doi:10.1126/sciadv.aas9732 · Cited by 732
Jiang, K., Wang, Y., Cai, C., & Lin, H. (2018) · Advanced Materials · doi:10.1002/adma.201800783 · Cited by 586
Self-citationUltralong and efficient phosphorescence from silica confined carbon nanodots in aqueous solution
Liang, Y.-C., Gou, S.-S., Liu, K.-K., Wu, W.-J., Guo, C.-Z., Lu, S.-Y., Zang, J.-H., Wu, X.-Y., Lou, Q., Dong, L., et al. (2020) · Nano Today · doi:10.1016/j.nantod.2020.100900 · Cited by 268
Metadata
- Authors
- Jiang, K., Wang, Y., Cai, C., & Lin, H.
- Venue
- Chemistry of Materials
- Publisher
- American Chemical Society (ACS)
- Published
- 2017-05-16
- Volume
- 29
- Issue
- 11
- Pages
- 4866-4873
- ISSN
- 0897-4756 (ISSN-L)
- 1520-5002
- OpenAlex
- W2611814995
- Cited by
- 240
- References
- 3
- FWCI
- 8.69
- Type
- journal article
- Language
- en
- Open access
- closed
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- Jiang, K., Wang, Y., Cai, C., & Lin, H. (2017). Activating Room Temperature Long Afterglow of Carbon Dots via Covalent Fixation. Chemistry of Materials. https://doi.org/10.1021/acs.chemmater.7b00831
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