Barman, Monoj Kumar ; Paramanik, Bipattaran ; Bain, Dipankar ; Patra, Amitava (2016) Light harvesting and white-light generation in a composite of carbon dots and dye-encapsulated BSA-protein-capped gold nanoclusters Chemistry - A European Journal, 22 (33). pp. 11699-11705. ISSN 0947-6539
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Official URL: http://onlinelibrary.wiley.com/doi/10.1002/chem.20...
Related URL: http://dx.doi.org/10.1002/chem.201601849
Abstract
Several strategies have been adopted to design an artificial light-harvesting system in which light energy is captured by peripheral chromophores and it is subsequently transferred to the core via energy transfer. A composite of carbon dots and dye-encapsulated BSA-protein-capped gold nanoclusters (AuNCs) has been developed for efficient light harvesting and white light generation. Carbon dots (C-dots) act as donor and AuNCs capped with BSA protein act as acceptor. Analysis reveals that energy transfer increases from 63 % to 83 % in presence of coumarin dye (C153), which enhances the cascade energy transfer from carbon dots to AuNCs. Bright white light emission with a quantum yield of 19 % under the 375 nm excitation wavelength is achieved by changing the ratio of components. Interesting findings reveal that the efficient energy transfer in carbon-dot–metal-cluster nanocomposites may open up new possibilities in designing artificial light harvesting systems for future applications.
Item Type: | Article |
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Source: | Copyright of this article belongs to John Wiley & Sons, Inc. |
ID Code: | 104656 |
Deposited On: | 01 Dec 2017 11:05 |
Last Modified: | 01 Dec 2017 11:05 |
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