A Luminescent Guest@MOF Nanoconfined Composite System for Solid-State Lighting

A series of rhodamine B (RhB) encapsulated zeolitic imidazolate framework-8 (RhB@ZIF-8) composite nanomaterials with different concentrations of guest loadings have been synthesized and characterized in order to investigate their applicability to solid-state white-light-emitting diodes (WLEDs). The nanoconfinement of the rhodamine B dye (guest) in the sodalite cages of ZIF-8 (host) is supported by fluorescence spectroscopic and photodynamic lifetime data. The quantum yield (QY) of the luminescent RhB@ZIF-8 material approaches unity when the guest loading is controlled at a low level: 1 RhB guest per ~7250 cages. We show that the hybrid (luminescent guest) LG@MOF material, obtained by mechanically mixing a suitably high-QY RhB@ZIF-8 red emitter with a green-emitting fluorescein@ZIF-8 “phosphor” with a comparably high QY, could yield a stable, intensity tunable, near-white light emission under specific test conditions described. Our results demonstrate a novel LG@MOF composite system exhibiting a good combination of photophysical properties and photostability, for potential applications in WLEDs, photoswitches, bioimaging and fluorescent sensors.

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Photo-facilitated aggregation and correlated color temperature adjustment of single component organic solid state white-light emitting materials

Journal of Materials Chemistry C ◽

10.1039/c4tc02771j ◽

2015 ◽

Vol 3 (17) ◽

pp. 4563-4569 ◽

Cited By ~ 16

Author(s):

Cheng Chen ◽

Xu-Hui Jin ◽

Xue-Jun Zhou ◽

Li-Xuan Cai ◽

Ya-Jun Zhang ◽

...

Keyword(s):

Charge Transfer ◽

Solid State ◽

White Light ◽

Light Emission ◽

White Light Emission ◽

Single Component ◽

Color Temperature ◽

Dual Emission ◽

Light Emitting ◽

Organic Solid

A pyridinium derivative with photo-facilitated aggregation and intra-/intermolecular charge transfer synergy-induced dual emission has been presented. The correlated color temperature tunable white-light emission can be realized in different states.

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Multiple Energy Transfer in Luminescence-Tunable Single-Phased Phosphor NaGdTiO4: Tm3+, Dy3+, Sm3+

Nanomaterials ◽

10.3390/nano10071249 ◽

2020 ◽

Vol 10 (7) ◽

pp. 1249 ◽

Cited By ~ 1

Author(s):

Jun Xiao ◽

Cong Wang ◽

Xin Min ◽

Xiaowen Wu ◽

Yangai Liu ◽

...

Keyword(s):

Energy Transfer ◽

Solid State ◽

White Light ◽

Single Phase ◽

Light Emission ◽

Photoluminescence Properties ◽

Light Emitting ◽

Energy Transfers ◽

White Light Emitting Diodes ◽

Tunable Emission

Advances in solid-state white-light-emitting diodes (WLEDs) necessitate the urgent development of highly efficient single-phase phosphors with tunable photoluminescence properties. Herein, the Tm3+, Dy3+, and Sm3+ ions are incorporated into the orthorhombic NaGdTiO4 (NGT) phosphors, resulting in phosphors that fulfill the aforementioned requirement. The emission spectrum of Tm3+ ions overlaps well with the adsorption spectra of both Dy3+ and Sm3+ ions. Under the excitation at 358 nm, the single-phase NaGdTiO4: Tm3+, Dy3+, Sm3+ phosphor exhibits tunable emission peaks in the blue, yellow, and red regions simultaneously, resulting in an intense white-light emission. The coexisting energy transfer behaviors from Tm3+ to Dy3+ and Sm3+ ions and the energy transfer from Dy3+ to Sm3+ ions are demonstrated to be responsible for this phenomenon. The phosphors with multiple energy transfers enable the development of single-phase white-light-emitting phosphors for phosphor-converted WLEDs.

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A general concept for white light emission formation from two complementary colored luminescent dyes

Materials Chemistry Frontiers ◽

10.1039/c8qm00599k ◽

2019 ◽

Vol 3 (3) ◽

pp. 505-512 ◽

Cited By ~ 11

Author(s):

Yuan Yang ◽

Tao Wang ◽

Pei Yin ◽

Weidong Yin ◽

Shaoxiong Zhang ◽

...

Keyword(s):

White Light ◽

Light Emission ◽

General Concept ◽

White Light Emission ◽

Research Interest ◽

Light Emitting ◽

Potential Applications

White-light emitting materials have attracted extensive research interest in recent years, which is largely ascribed to their potential applications in lighting devices and display media.

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Direct white-light-emitting and near-infrared phosphorescence of zeolitic imidazolate framework-8

Chemical Communications ◽

10.1039/c6cc09706e ◽

2017 ◽

Vol 53 (11) ◽

pp. 1801-1804 ◽

Cited By ~ 50

Author(s):

Xiaogang Yang ◽

Dongpeng Yan

Keyword(s):

Density Distribution ◽

Electron Density ◽

White Light ◽

Electron Density Distribution ◽

Near Infrared ◽

Light Emission ◽

White Light Emission ◽

Computational Studies ◽

Zeolitic Imidazolate Framework ◽

Light Emitting

Zeolitic imidazolate framework-8 can directly exhibit unexpected white-light emission and near-infrared phosphorescence, due to the host–guest interaction and the alternation of electron-density distribution, as confirmed by both experimental and computational studies.

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Recent Advances on the Applications of Luminescent Pb2+-Containing Metal–Organic Frameworks in White-Light Emission and Sensing

Frontiers in Chemistry ◽

10.3389/fchem.2021.636431 ◽

2021 ◽

Vol 9 ◽

Author(s):

Li-Xin Wang ◽

Jing Xiang ◽

Chuan-Hua Li ◽

Chi-Fai Leung ◽

Jing Xiang

Keyword(s):

White Light ◽

Single Phase ◽

Light Emission ◽

Metal Organic Frameworks ◽

Bridging Ligands ◽

Light Emitting ◽

New Class ◽

Recent Advances ◽

Potential Applications ◽

Metal Organic

Luminescent Pb2+-based metal–organic frameworks (MOFs) belong to a new class of multifunctional molecular materials with interesting luminescence properties and potential applications within a single crystalline phase. In this mini review, we present the recent advances that have been achieved in their applications as single-phase white-light emitting materials and chemosensors in the last decade. We focus on the trends in the modification of their structures and luminescence by various bridging ligands, and subsequently their multifunctional applications, which may affect the future development of the field.

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Single-component solid state white-light emission and photoluminescence color tuning of a Cd(ii) complex and its application as a luminescence thermometer

Journal of Materials Chemistry C ◽

10.1039/c9tc04033a ◽

2019 ◽

Vol 7 (43) ◽

pp. 13454-13460 ◽

Cited By ~ 1

Author(s):

Jinling Miao ◽

Yong Nie ◽

Yexin Li ◽

Chengyuan Qin ◽

Yifan Ren ◽

...

Keyword(s):

Solid State ◽

White Light ◽

Light Emission ◽

White Light Emission ◽

Single Component ◽

Color Temperature ◽

Color Tuning ◽

Light Emitting

A single-component white-light emitting Cd(ii) complex exhibits tunable photoluminescence and acts as a novel luminescence thermometer based on the correlation between temperature and color temperature.

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White light emission by controlled mixing of carbon dots and rhodamine B for applications in optical thermometry and selective Fe3+detection

RSC Advances ◽

10.1039/c6ra17306c ◽

2016 ◽

Vol 6 (88) ◽

pp. 84599-84603 ◽

Cited By ~ 15

Author(s):

Sonam Mandani ◽

Bhagwati Sharma ◽

Deepa Dey ◽

Tridib K. Sarma

Keyword(s):

White Light ◽

Rhodamine B ◽

Carbon Dots ◽

Light Emission ◽

White Light Emission ◽

Ion Detection ◽

Light Emitting ◽

Optical Thermometry ◽

Fluorescent Carbon Dots ◽

Β Carotene

Controlled mixing of rhodamine B with fluorescent carbon dots derived from β-carotene resulted in a white light emitting mixture that could be used for optical thermometry and Fe3+ion detection in water.

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Tunable white-light emission via energy transfer in single-phase LiGd(WO4)2:Re3+ (Re = Tm, Tb, Dy, Eu) phosphors for UV-excited WLEDs

RSC Advances ◽

10.1039/c5ra19345a ◽

2015 ◽

Vol 5 (117) ◽

pp. 96272-96280 ◽

Cited By ~ 51

Author(s):

Yang Zhang ◽

Weitao Gong ◽

Jingjie Yu ◽

Yuan Lin ◽

Guiling Ning

Keyword(s):

Energy Transfer ◽

Solid State ◽

White Light ◽

Solid State Reaction ◽

Single Phase ◽

Light Emission ◽

White Light Emission ◽

Energy Transfer Mechanism ◽

Photoluminescence Properties ◽

Light Emitting

Novel single-phase white-light-emitting phosphors have been successfully synthesized by a solid-state reaction and their photoluminescence properties and energy transfer mechanism have been carefully investigated.

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Effects of electron-withdrawing groups in imidazole-phenanthroline ligands and their influence on the photophysical properties of EuIII complexes for white light-emitting diodes

New Journal of Chemistry ◽

10.1039/c7nj02291c ◽

2017 ◽

Vol 41 (18) ◽

pp. 9826-9839 ◽

Cited By ~ 8

Author(s):

Boddula Rajamouli ◽

Rachna Devi ◽

Abhijeet Mohanty ◽

Venkata Krishnan ◽

Sivakumar Vaidyanathan

Keyword(s):

Thin Film ◽

Quantum Yield ◽

White Light ◽

Light Emitting Diode ◽

Photophysical Properties ◽

Red Light ◽

Europium Complexes ◽

Light Emitting ◽

White Light Emitting Diodes ◽

Phenanthroline Ligands

The red light emitting diode (LED) was fabricated by using europium complexes with InGaN LED (395 nm) and shown digital images, corresponding CIE color coordinates (red region) as well as obtained highest quantum yield of the thin film (78.7%).

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