光化学
哑铃
材料科学
共价键
DNA
电荷(物理)
化学
纳米技术
碳纤维
物理
有机化学
复合材料
物理疗法
复合数
医学
量子力学
生物化学
作者
Saptarshi Mandal,Prolay Das
出处
期刊:Nanoscale
[The Royal Society of Chemistry]
日期:2021-01-01
卷期号:13 (33): 14147-14155
被引量:6
摘要
The potential of carbon dots (CDs) for photonic conversion to charged states, together with the ability of DNA to transport such charge for extensive charge separation, offers an opportunity to control directionality of migration for photo-induced radical cations in CD-DNA based nano-assemblies. This is achieved through engineering the reaction valency of CDs whereby one CD is covalently conjugated with one ssDNA strand. Subsequently, a CD-DNA-CD nano-dumbbell architecture was created through hybridization mediated self-assembly. The time and intensity-dependent transduction of visible light photonic energy to chemical potential in DNA was achieved through irradiation of 1,4-diaminoathraquinone and glyoxal derived CD with 100 W tungsten source and natural sunlight. Following charge injection by CD, the radical cation migration in DNA was perceived through trapping of the hole in repeated GG steps in the DNA. Overall, a breakthrough in visible-light-induced charge transfer by CD into DNA was achieved, potentially applicable to optobioelectronics.
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