Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Self-Assembly of Emissive Nanocellulose/Quantum Dot Nanostructures for Chiral Fluorescent Materials
ACS Nano ( IF 15.8 ) Pub Date : 2019-08-05 00:00:00 , DOI: 10.1021/acsnano.9b03305 Rui Xiong 1 , Shengtao Yu 1 , Marcus J. Smith 1 , Jing Zhou 1 , Michelle Krecker 1 , Lijuan Zhang 1 , Dhriti Nepal 2 , Timothy J. Bunning 2 , Vladimir V. Tsukruk 1
ACS Nano ( IF 15.8 ) Pub Date : 2019-08-05 00:00:00 , DOI: 10.1021/acsnano.9b03305 Rui Xiong 1 , Shengtao Yu 1 , Marcus J. Smith 1 , Jing Zhou 1 , Michelle Krecker 1 , Lijuan Zhang 1 , Dhriti Nepal 2 , Timothy J. Bunning 2 , Vladimir V. Tsukruk 1
Affiliation
|
Chiral fluorescent materials with fluorescent nanoparticles assembled into a chiral structure represent a grand challenge. Here, we report self-assembled emissive needle-like nanostructures through decorating cellulose nanocrystals (CNCs) with carbon quantum dots (CQDs). This assembly is facilitated by the heterogeneous amphiphilic interactions between natural and synthetic components. These emissive nanostructures can self-organize into chiral nematic solid-state materials with enhanced mechanical performance. The chiral CQD/CNC films demonstrate an intense iridescent appearance superimposed with enhanced luminescence that is significantly higher than that for CQD films and other reported CQD/CNC films. A characteristic fluorescent fingerprint signature is observed in the CQD/CNC film, proving the well-defined chiral organization of fluorescent nanostructures. The chiral organization of CQDs enables the solid CQD/CNC film to form a right-hand chiral fluorescence with an asymmetric factor of −0.2. Additionally, we developed chemical 2D printing and soft lithography patterning techniques to fabricate the freestanding chiral fluorescent patterns that combines mechanical intergrity and chiral nematic structure with light diffraction and emission.
中文翻译：
用于手性荧光材料的自发射纳米纤维素/量子点纳米结构的自组装
具有组装成手性结构的荧光纳米颗粒的手性荧光材料代表了巨大的挑战。在这里，我们通过用碳量子点（CQDs）装饰纤维素纳米晶体（CNCs）报告自组装的发射状针状纳米结构。天然和合成组分之间的异质两亲相互作用促进了这种组装。这些发射的纳米结构可以自组织成具有增强的机械性能的手性向列型固态材料。手性CQD / CNC膜表现出强烈的虹彩外观，并与增强的发光叠加，明显高于CQD膜和其他已报道的CQD / CNC膜。在CQD / CNC膜中观察到了特征性的荧光指纹特征，证明了荧光纳米结构的定义明确的手性组织。CQD的手性组织使固态CQD / CNC膜能够形成不对称因子-0.2的右手性荧光。此外，我们开发了化学2D打印和软光刻构图技术，以制造将机械完整性和手性向列结构与光衍射和发射相结合的独立手性荧光图案。
更新日期：2019-08-05
中文翻译：
用于手性荧光材料的自发射纳米纤维素/量子点纳米结构的自组装
具有组装成手性结构的荧光纳米颗粒的手性荧光材料代表了巨大的挑战。在这里，我们通过用碳量子点（CQDs）装饰纤维素纳米晶体（CNCs）报告自组装的发射状针状纳米结构。天然和合成组分之间的异质两亲相互作用促进了这种组装。这些发射的纳米结构可以自组织成具有增强的机械性能的手性向列型固态材料。手性CQD / CNC膜表现出强烈的虹彩外观，并与增强的发光叠加，明显高于CQD膜和其他已报道的CQD / CNC膜。在CQD / CNC膜中观察到了特征性的荧光指纹特征，证明了荧光纳米结构的定义明确的手性组织。CQD的手性组织使固态CQD / CNC膜能够形成不对称因子-0.2的右手性荧光。此外，我们开发了化学2D打印和软光刻构图技术，以制造将机械完整性和手性向列结构与光衍射和发射相结合的独立手性荧光图案。
京公网安备 11010802027423号