title: Layer-by-Layer Assembly of Stable Aqueous Quantum Dots for Luminescent Planar Plate.
abstract: This work reports the fabrication of a luminescent planar plate based on stable aqueous quantum dots (QDs) and poly(diallyldimethylammonium chloride) (PDDA) via a layer-by-layer (LBL) assembly technique. Preparation of aqueous QDs with facile monoalkyl maleate amphiphilic surfactants as the coating agent is conducted by a robust and efficient phase-transfer method. The as-prepared aqueous QDs exhibit bright emission, and their surface has very large negative zeta potential values, which are useful for electrostatic LBL assembly. Red, green, and blue luminescent planar plates are successfully fabricated via LBL assembly of the monocolor QDs, respectively. Through accurately adjusting the relative proportion of each monocolor luminescent component, we obtain an inspiring luminescent planar plate, which emits bright white light with a color coordinate of (0.3509, 0.3483), a correlated color temperature (CCT) of 4766 K, and a high color rendering index (CRI, Ra) of 89.5 under the irradiation of UV light. Therefore, this paper reports a facile process for the design and preparation of luminescent planar plates, which have potential applications in display and solid-state lighting devices.
authors.affiliation: †Key Laboratory for Special Functional Materials of the Ministry of Education, Henan University, Kaifeng, 475004, P. R. China.
authors.forename: Xuejing
authors.initials: X
authors.lastname: Zhang
authors.affiliation: †Key Laboratory for Special Functional Materials of the Ministry of Education, Henan University, Kaifeng, 475004, P. R. China.
authors.forename: Changhua
authors.initials: C
authors.lastname: Zhou
authors.affiliation: †Key Laboratory for Special Functional Materials of the Ministry of Education, Henan University, Kaifeng, 475004, P. R. China.|‡Center for Advanced Optoelectronic Functional Materials Research, and Key Laboratory for UV-Emitting Materials and Technology of Ministry of Education, Northeast Normal University, Changchun 130024, P. R. China.
authors.forename: Shuaipu
authors.initials: S
authors.lastname: Zang
authors.affiliation: †Key Laboratory for Special Functional Materials of the Ministry of Education, Henan University, Kaifeng, 475004, P. R. China.
authors.forename: Huaibin
authors.initials: H
authors.lastname: Shen
authors.affiliation: ‡Center for Advanced Optoelectronic Functional Materials Research, and Key Laboratory for UV-Emitting Materials and Technology of Ministry of Education, Northeast Normal University, Changchun 130024, P. R. China.
authors.forename: Pengpeng
authors.initials: P
authors.lastname: Dai
authors.affiliation: ‡Center for Advanced Optoelectronic Functional Materials Research, and Key Laboratory for UV-Emitting Materials and Technology of Ministry of Education, Northeast Normal University, Changchun 130024, P. R. China.
authors.forename: Xintong
authors.initials: X
authors.lastname: Zhang
authors.affiliation: †Key Laboratory for Special Functional Materials of the Ministry of Education, Henan University, Kaifeng, 475004, P. R. China.
authors.forename: Lin Song
authors.initials: LS
authors.lastname: Li
keywords: LBL assembly; PDDA; luminescent planar plates; monoalkyl maleate; water-soluble QDs