Selective Binding of Genomic Escherichia coli DNA with ZnO Leads to White Light Emission: A New Aspect of Nano−Bio Interaction and Interface
IR@IICB: CSIR-Indian Institute of Chemical Biology, Kolkata
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Title |
Selective Binding of Genomic Escherichia coli DNA with ZnO Leads to White Light Emission: A New Aspect of Nano−Bio Interaction and Interface
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Creator |
Das, Sumita
Pramanik, Srikrishna Chatterjee, Sabyasachi Das, Partha Pratim Devi, Parukuttyamma Sujatha Kumar, Gopinatha Suresh |
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Subject |
Chemistry
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Description |
Here, we report for the first time, a novel and
intriguing application of deoxyribonucleic acid (DNA) in the
area of optics by demonstrating white light emission by tuning the emission of a nanomaterial, ZnO rods, exhibiting surface defects, in the presence of genomic Escherichia coli DNA with a comparatively high quantum efficiency. In order to understand the DNA specificity, we have also studied the interaction of ZnO with CT, and ML DNA, ss EC DNA, synthetic polynucleotides and different mononucleosides and bases. Further, in order to understand the effect of particle shape and defects present in ZnO, we have also extended our study with ZnO rods prepared at higher temperature exhibiting red emission and ZnO particles exhibiting yellow emission. Interestingly, none of the above studies resulted in white light emission from
ZnO−DNA complex. Our studies unequivocally confirmed that the concentration and the nature of DNA and ZnO together
plays a crucial role in obtaining CIE coordinates (0.33, 0.33) close to white light. The much enhanced melting temperature (Tm) of EC DNA and the energetics factors confirm enhanced hydrogen bonding of ZnO with EC DNA leading to a new emission band. Our experimental observations not only confirm the selective binding of ZnO to EC DNA but also open a new perspective for developing energy saving light emitting materials through nano-bio interactions.
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Date |
2017-01-11
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Type |
Article
PeerReviewed |
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Format |
application/pdf
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Identifier |
http://www.eprints.iicb.res.in/2609/1/ACS_Appl._Mater._Interfaces_2017%2C_9%2C.pdf
Das, Sumita and Pramanik, Srikrishna and Chatterjee, Sabyasachi and Das, Partha Pratim and Devi, Parukuttyamma Sujatha and Kumar, Gopinatha Suresh (2017) Selective Binding of Genomic Escherichia coli DNA with ZnO Leads to White Light Emission: A New Aspect of Nano−Bio Interaction and Interface. ACS Applied Materials & Interfaces, 9. pp. 644-657. |
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Relation |
http://dx.doi.org/10.1021/acsami.6b11109
http://www.eprints.iicb.res.in/2609/ |
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