title: Tunable and purified luminescence via energy transfer and delamination of LRH (R=Tb, Y) composites with 8-hydroxypyrene-1,3,6-trisulphonate.
abstract: This work demonstrates tunable and purified luminescence via one-step delamination of HPTS/OS-LRH composites (HPTS is trisodium 8-hydroxy-pyrene-1,3,6-trisulphonate, OS is sodium salt of 1-octane sulfonic acid, LRH is layered rare-earth hydroxide, R=Tb, Y) along with energy transfer. The HPTSxOS1-x-LTbyY1-yH composites presented varied luminescence behavior depending on their physical state. In solid state, dual-color luminescence was observed: blue-dominant emissions (437nm) for HPTSxOS1-x-LTbH, and blue- (437nm) to green-dominant (516nm) luminescence for HPTS0.02OS0.98-LTbyY1-yH. In delaminated state in famamide, purified luminescence was present: pure blue emission (440nm) for HPTSxOS1-x-LTbH and HPTS0.02OS0.98-LTbyY1-yH (y≥0.5), while pure bluish-green emission (498nm) for HPTS0.02OS0.98-LTbyY1-yH (y≤0.3). Both the delamination of the composites and energy transfer from layer Tb3+to HPTS contributed to the blue luminescence. The intriguing energy transfer process between photoactive inorganic hosts and organic guests can be utilized to fabricate hybrid materials with superior luminescence property.
authors.affiliation: Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing 100875, China.
authors.forename: Feifei
authors.initials: F
authors.lastname: Su
authors.affiliation: Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing 100875, China.
authors.forename: Chenyu
authors.initials: C
authors.lastname: Liu
authors.affiliation: Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing 100875, China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Yang
authors.affiliation: Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing 100875, China. Electronic address: mashulan@bnu.edu.cn.
authors.forename: Shulan
authors.initials: S
authors.lastname: Ma
authors.affiliation: Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing 100875, China.
authors.forename: Genban
authors.initials: G
authors.lastname: Sun
authors.affiliation: Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing 100875, China.
authors.forename: Xiaojing
authors.initials: X
authors.lastname: Yang
keywords: Energy transfer; LRH composites; Layered materials; Luminescence property