A responsive supramolecular-organic framework: Functionalization with organic laser dye and lanthanide ions for sensing of nitrobenzene

2020 ◽  
Vol 284 ◽  
pp. 121171
Author(s):  
Danyong Jiang ◽  
Huaifang Fang ◽  
Gang Li ◽  
Guoli Zheng
Keyword(s):  
Lanthanide Ions ◽  
Laser Dye ◽  
Organic Laser ◽  
Organic Framework

scholarly journals Solid cyclooctatetraene-based triplet quencher demonstrating excellent suppression of singlet–triplet annihilation in optical and electrical excitation

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Van T. N. Mai ◽  
Viqar Ahmad ◽  
Masashi Mamada ◽  
Toshiya Fukunaga ◽  
Atul Shukla ◽  
...  
Keyword(s):  
Continuous Wave ◽  
Fold Increase ◽  
Complete Suppression ◽  
Laser Dye ◽  
Electrical Excitation ◽  
Design And Synthesis ◽  
Cw Operation ◽  
Nanosecond Range ◽  
Organic Laser ◽  
Triplet Excitons

Abstract Triplet excitons have been identified as the major obstacle to the realisation of organic laser diodes, as accumulation of triplet excitons leads to significant losses under continuous wave (CW) operation and/or electrical excitation. Here, we report the design and synthesis of a solid-state organic triplet quencher, as well as in-depth studies of its dispersion into a solution processable bis-stilbene-based laser dye. By blending the laser dye with 20 wt% of the quencher, negligible effects on the ASE thresholds, but a complete suppression of singlet–triplet annihilation (STA) and a 20-fold increase in excited-state photostability of the laser dye under CW excitation, were achieved. We used small-area OLEDs (0.2 mm2) to demonstrate efficient STA suppression by the quencher in the nanosecond range, supported by simulations to provide insights into the observed STA quenching under electrical excitation. The results demonstrate excellent triplet quenching ability under both optical and electrical excitations in the nanosecond range, coupled with excellent solution processability.

Preparation and thiols sensing of luminescent metal–organic framework films functionalized with lanthanide ions

2013 ◽  
Vol 179 ◽  
pp. 198-204 ◽  
Author(s):  
Zhongshang Dou ◽  
Jiancan Yu ◽  
Hui Xu ◽  
Yuanjing Cui ◽  
Yu Yang ◽  
...  
Keyword(s):  
Metal Organic Framework ◽  
Lanthanide Ions ◽  
Metal Organic ◽  
Organic Framework

Polyoxometalate-based metal–organic framework NENU-5 hybrid materials for photoluminescence tuning by introducing lanthanide ions and their functionalized soft ionogel/thin film

CrystEngComm ◽  
2019 ◽  
Vol 21 (7) ◽  
pp. 1186-1192 ◽  
Author(s):  
Bing-Hui Wang ◽  
Bing Yan
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Hybrid Materials ◽  
Metal Organic Framework ◽  
Lanthanide Ions ◽  
Metal Organic ◽  
White Luminescence ◽  
Organic Framework

POM-based MOFs hybrids and derived soft ionogels together with transparent thin films are prepared, all of which display multi-color and even white luminescence.

scholarly journals Organic Laser Dyes: An Organic Laser Dye having a Small Singlet‐Triplet Energy Gap Makes the Selection of a Host Material Easier (Adv. Funct. Mater. 30/2020)

2020 ◽  
Vol 30 (30) ◽  
pp. 2070204
Author(s):  
Buddhika S. B. Karunathilaka ◽  
Umamahesh Balijapalli ◽  
Chathuranganie A. M. Senevirathne ◽  
Yu Esaki ◽  
Kenichi Goushi ◽  
...  
Keyword(s):  
Energy Gap ◽  
Host Material ◽  
Laser Dyes ◽  
Laser Dye ◽  
Triplet Energy ◽  
Organic Laser ◽  
Selection Of

scholarly journals Dual Emission in a Ligand and Metal Co-Doped Lanthanide-Organic Framework: Color Tuning and Temperature Dependent Luminescence

Molecules ◽  
2020 ◽  
Vol 25 (3) ◽  
pp. 523 ◽  
Author(s):  
Despoina Andriotou ◽  
Stavros A. Diamantis ◽  
Anna Zacharia ◽  
Grigorios Itskos ◽  
Nikos Panagiotou ◽  
...  
Keyword(s):  
Photophysical Properties ◽  
Metal Organic Framework ◽  
Lanthanide Ions ◽  
Temperature Dependent ◽  
Dual Emission ◽  
Bridging Ligands ◽  
Color Tuning ◽  
Metal Organic ◽  
Lanthanide Metal ◽  
Organic Framework

In this study, we report the luminescence color tuning in the lanthanide metal-organic framework (LnMOF) ([La(bpdc)Cl(DMF)] (1); bpdc2− = [1,1′-biphenyl]-4,4′-dicarboxylate, DMF = N,N-dimethylformamide) by introducing dual emission properties in a La3+ MOF scaffold through doping with the blue fluorescent 2,2′-diamino-[1,1′-biphenyl]-4,4′-dicarboxylate (dabpdc2−) and the red emissive Eu3+. With a careful adjustment of the relative doping levels of the lanthanide ions and bridging ligands, the color of the luminescence was modulated, while at the same time the photophysical characteristics of the two chromophores were retained. In addition, the photophysical properties of the parent MOF (1) and its doped counterparts with various dabpdc2−/bpdc2− and Eu3+/La3+ ratios and the photoinduced energy transfer pathways that are possible within these materials are discussed. Finally, the temperature dependence study on the emission profile of a doped analogue containing 10% dabpdc2− and 2.5% Eu3+ (7) is presented, highlighting the potential of this family of materials to behave as temperature sensors.

scholarly journals An Organic Laser Dye having a Small Singlet‐Triplet Energy Gap Makes the Selection of a Host Material Easier

2020 ◽  
Vol 30 (30) ◽  
pp. 2001078 ◽  
Author(s):  
Buddhika S. B. Karunathilaka ◽  
Umamahesh Balijapalli ◽  
Chathuranganie A. M. Senevirathne ◽  
Yu Esaki ◽  
Kenichi Goushi ◽  
...  
Keyword(s):  
Energy Gap ◽  
Host Material ◽  
Laser Dye ◽  
Triplet Energy ◽  
Organic Laser ◽  
Selection Of

Random lasing in liquid and solid solutions oversaturated with organic laser dye

2014 ◽  
Author(s):  
Lech Sznitko ◽  
Konrad Cyprych ◽  
Adam Szukalski ◽  
Andrzej Miniewicz ◽  
Jaroslaw Mysliwiec
Keyword(s):  
Solid Solutions ◽  
Laser Dye ◽  
Random Lasing ◽  
Organic Laser
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