期刊
CHEMISTRY OF MATERIALS
卷 28, 期 22, 页码 8347-8356出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.chemmater.6b03625
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资金
- Grants-in-Aid for Scientific Research [16H06441] Funding Source: KAKEN
Detailed spectroscopic analysis of the electronic configuration of Cr3+ in Bi2Ga4O9 is reported. The material exhibits unique luminescent properties arising from the crystal field experienced by Cr3+, with simultaneous strong sharp and broadband near-infrared emissions from the E-2 and T-4(2) excited states, in a wide range of temperature. The system displays dual near-infrared emission characterized by a remarkable thermal sensitivity over the whole explored range of temperatures, reaching a value of 0.7%.K-1 in the physiological range. Moreover, the possibility to absorb and emit in the first biological window, allows one to consider the system as a new promising candidate for ratiometric fluorescent thermal sensing in biotechnological applications.
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