title: Bright luminescence from pure DNA-curcumin-based phosphors for bio hybrid light-emitting diodes.
abstract: Recently, significant advances have occurred in the development of phosphors for bio hybrid light-emitting diodes (Bio-HLEDs), which have created brighter, metal-free, rare-earth phosphor-free, eco-friendly, and cost-competitive features for visible light emission. Here, we demonstrate an original approach using bioinspired phosphors in Bio-HLEDs based on natural deoxyribonucleic acid (DNA)-curcumin complexes with cetyltrimethylammonium (CTMA) in bio-crystalline form. The curcumin chromophore was bound to the DNA double helix structure as observed using field emission tunnelling electron microscopy (FE-TEM). Efficient luminescence occurred due to tightly bound curcumin chromophore to DNA duplex. Bio-HLED shows low luminous drop rate of 0.0551 s(-1). Moreover, the solid bio-crystals confined the activating bright luminescence with a quantum yield of 62%, thereby overcoming aggregation-induced quenching effect. The results of this study herald the development of commercially viable large-scale hybrid light applications that are environmentally benign.
authors: LED-IT Fusion Technology Research Center, Yeungnam University, Gyeongsan 38541, Republic of Korea.
authors: M Siva Pratap
authors: MS
authors: Reddy
authors: LED-IT Fusion Technology Research Center, Yeungnam University, Gyeongsan 38541, Republic of Korea.|School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea.
authors: Chinho
authors: C
authors: Park
mesh_terms: D002593:Cetrimonium Compounds / Q000737:chemistry; D003460:Crystallization; D003474:Curcumin / Q000737:chemistry*; D004247:DNA / Q000737:chemistry*; D005456:Fluorescent Dyes / Q000737:chemistry*; D054023:Lasers, Semiconductor; D008027:Light; D049449:Luminescence; D008163:Luminescent Measurements / Q000379:methods; D008854:Microscopy, Electron / Q000379:methods; D015203:Reproducibility of Results
chemical_list: D002593:Cetrimonium Compounds; D005456:Fluorescent Dyes; D004247:DNA; D003474:Curcumin