期刊
NANO LETTERS
卷 20, 期 4, 页码 2710-2716出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.0c00324
关键词
protein design; repeat proteins; metal nanocluster; biohybrid materials; biophosphors; light-emitting diodes
类别
资金
- European Research Council [ERC-CoG-648071-ProNANO, ERC-PoC-2018-841063-NIMM]
- Spanish Ministry of Economy and Competitiveness [BIO2016-77367-R]
- Basque Government [Elkartek KK-2017/00008]
- Spanish State Research Agency [MDM-2017-0720]
- European Union's Horizon 2020 research and innovation programme [863170]
- Spanish MINECO [2016-T1/IND-1463, RYC-2016-20891, ERC2019092825, RTI2018-099504-A-C22]
- Madrid region [P2018/NMT-4367]
- Marie Sklodowska-Curie Individual Fellowships [H2020-MSCA-IF-2017]
This work presents a simple in situ synthesis and stabilization of fluorescent gold nanoclusters (AuNCs) with different sizes using engineered protein scaffolds in water. The protein-AuNC hybrids show a dual emission (450 and 700 nm) with a record photoluminescence quantum yield of 20%. These features impelled us to apply them to biohybrid light-emitting diodes as color down-converting filters or biophosphors. Efficient white emission (x/y CIE color coordinates of 0.31/0.29) and stabilities of more than 800 h were achieved. This represents a 2 orders of magnitude enhancement compared to the prior art. Besides the outstanding performance, the protein scaffold also infers a unique anisotropic emission character that is considered as a proof-of-concept of high interest for single-point lighting and display.
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