The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.
Aggregation-Enhanced Emissions of Intramolecular Excimers in Disubstituted Polyacetylenes
Abstract
Whereas chain aggregation commonly quenches light emission of conjugated polymers, we here report a phenomenon of aggregation-induced emission enhancement (AIEE): luminescence of polyacetylenes is dramatically boosted by aggregate formation. Upon photoexcitation, poly(1-phenyl-1-alkyne)s and poly(diphenylacetylene)s emit blue and green lights, respectively, in dilute THF solutions. The polymers become more emissive when their chains are induced to aggregate by adding water into their THF solutions. The polymer emissions are also enhanced by increasing concentration and decreasing temperature. Lifetime measurements reveal that the excited species of the polymers become longer-lived in the aggregates. Conformational simulations suggest that the polymer chains contain n=3 repeat units that facilitate the formation of intramolecular excimers. The AIEE effects of the polymers are rationalized to be caused by the restrictions of their intramolecular rotations by the aggregate formation.
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Citations
Cites
Aggregation-induced emission of 1-methyl-1,2,3,4,5-pentaphenylsilole
Luo, J., Xie, Z., Lam, J. W. Y., Cheng, L., Tang, B. Z., Chen, H., Qiu, C., Kwok, H. S., Zhan, X., Liu, Y., et al. (2001) · Chemical Communications · doi:10.1039/b105159h · Cited by 8,358
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Cited by
Hong, Y., Lam, J. W. Y., & Tang, B. Z. (2011) · Chemical Society Reviews · doi:10.1039/c1cs15113d · Cited by 6,363
Self-citationLuminogenic polymers with aggregation-induced emission characteristics
Qin, A., Lam, J. W. Y., & Tang, B. Z. (2012) · Progress in Polymer Science · doi:10.1016/j.progpolymsci.2011.08.002 · Cited by 441
Self-citationWu, W., Ye, S., Yu, G., Liu, Y., Qin, J., & Li, Z. (2012) · Macromolecular Rapid Communications · doi:10.1002/marc.201100503 · Cited by 143
Ma, C., Ling, Q., Xu, S., Zhu, H., Zhang, G., Zhou, X., Chi, Z., Liu, S., Zhang, Y., & Xu, J. (2014) · Macromolecular Bioscience · doi:10.1002/mabi.201300259 · Cited by 60
Chan, C. Y. K., Lam, J. W. Y., Jim, C. K. W., Sung, H. H. Y., Williams, I. D., & Tang, B. Z. (2013) · Macromolecules · doi:10.1021/ma402066k · Cited by 44
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Metadata
- Authors
- Qin, A., Jim, C. K. W., Tang, Y., Lam, J. W. Y., Liu, J., Mahtab, F., Gao, P., & Tang, B. Z.
- Venue
- The Journal of Physical Chemistry B
- Publisher
- American Chemical Society (ACS)
- Published
- 2008-07-16
- Volume
- 112
- Issue
- 31
- Pages
- 9281-9288
- ISSN
- 1520-5207 (ISSN-L)
- 1520-6106
- OpenAlex
- W2038126151
- Cited by
- 175
- References
- 1
- FWCI
- 8.08
- Type
- journal article
- Language
- en
- Open access
- closed
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