The DOI matches its Crossref record; 38 of the 38 references it cites were found in a registry or an index.
Prevalent intrinsic emission from nonaromatic amino acids and poly(amino acids)
Open accessAbstract
Nonaromatic amino acids are generally believed to be nonemissive, owing to their lack of apparently remarkable conjugation within individual molecules. Here we report the intrinsic visible emission of nonaromatic amino acids and poly(amino acids) in concentrated solutions and solid powders. This unique and widespread luminescent characteristic can be well rationalized by the clustering-triggered emission (CTE) mechanism, namely the clustering of nonconventional chromophores (i.e. amino, carbonyl, and hydroxyl) and subsequent electron cloud overlap with simultaneous conformation rigidification. Such CTE mechanism is further supported by the single crystal structure analysis, from which 3D through space electronic communications are uncovered. Besides prompt fluorescence, room temperature phosphorescence (RTP) is also detected from the solids. Moreover, persistent RTP is observed in the powders of exampled poly(amino acids) of ε-poly-L-lysine (ɛ-PLL) after ceasing UV irradiation. These results not only illustrate the feasibility of employing the building blocks of nonaromatic amino acids in the exploration of new luminescent biomolecules, but also provide significant implications for the emissions of peptides and proteins at aggregated or crystalline states. Meanwhile, they may also shed lights on further understanding of autofluorescence from biological systems.
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Cites
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Cited by
Room-temperature phosphorescence from organic aggregates
Zhao, W., He, Z., & Tang, B. Z. (2020) · Nature Reviews Materials · doi:10.1038/s41578-020-0223-z · Cited by 1,766
Zhao, Z., Chen, X., Wang, Q., Yang, T., Zhang, Y., & Yuan, W. Z. (2019) · Polymer Chemistry · doi:10.1039/c9py00519f · Cited by 98
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Metadata
- Authors
- Chen, X., Luo, W., Ma, H., Peng, Q., Yuan, W. Z., & Zhang, Y.
- Venue
- Science China Chemistry
- Published
- 2017-09-06
- Volume
- 61
- Issue
- 3
- Pages
- 351-359
- ISSN
- 1001-652X (ISSN-L)
- 1674-7291
- 1869-1870
- OpenAlex
- W2963169360
- Cited by
- 322
- References
- 38
- FWCI
- 8.92
- Type
- journal article
- Language
- en
- Open access
- green
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