Results 271 to 280 of about 992,437 (326)

Aggregation‐Induced Emission Leading to White Light Emission in Diphenylbenzofulvene Derivatives

Chemistry – A European Journal, 2022
AbstractThe search for a unique molecular system able to efficiently emit in the total visible range of the electromagnetic spectra, i. e., white light emission (WLE), is a topic of intense research. We here show that aggregates formed by diphenylbenzofulvene (DPBF) derivatives are from two to four orders of magnitude more emissive than their monomers.
Ana Clara B. Rodrigues, Mariana Peixoto, Carla Gomes, Marta Pineiro, J. Sérgio Seixas de Melo   +4 more
openaire   +2 more sources

DNA-assisted white light emission through FRET

Chem. Commun., 2011
We observed FRET between an excimer of a partially intercalated cyclophane and ethidium bromide, a classical intercalator in presence of DNA and by fine-tuning the molar concentrations of these three components, we could generate white light emission in the aqueous and non-aqueous media.
Krishnankutty S, Sanju, Prakash P, Neelakandan, Danaboyina, Ramaiah   +2 more
openaire   +2 more sources

Emission characteristics of white light phosphor

CLEO/Pacific Rim 2003. The 5th Pacific Rim Conference on Lasers and Electro-Optics (IEEE Cat. No.03TH8671), 2004
White light LED was successfully fabricated by converting near-UV LED emission (390-420 nm) with a new white light phosphor. This new white phosphor was consisted of three fluorescence materials; two strontium aluminates based with lanthanide oxides, SrAl/sub 2/O/sub 4/:Eu/sup 2+/ (for green (520 nm) emission) and Sr/sub 4/Al/sub 14/O/sub 25/:Eu/sup 2+/
K.M. Lee, null Bao-li An, null Meng-lian Gong, null Ying-liang Liu, K.W. Cheah   +4 more
openaire   +1 more source

White Light Emission from Black Germanium

ACS Photonics, 2017
We demonstrate the nearly perfect absorption and quantum dots-mediated enhanced visible light emissions from defect engineered Ge nanopyramids or black germanium. High-resolution 3D photoluminescence (PL) imaging of the pyramid structure elucidated the position dependency of defects and their emission: Stronger photoluminescence yield was observed at ...
Satish Laxman Shinde, Thang Duy Dao, Satoshi Ishii, Li-Wei Nien, Karuna Kar Nanda, Tadaaki Nagao   +5 more
openaire   +1 more source

Crystallization-Driven Asymmetric Helical Assembly of Conjugated Block Copolymer and the Aggregation Induced White-light Emission and Circularly Polarized Luminescence.

Angewandte Chemie, 2020
Control the self-assembly morphology of π-conjugated block copolymer is of great interesting. In this work, amphiphilic poly(3-hexylthiophene)- block -poly(phenyl isocyanide)s (P3HT- b -PPI) copolymers composed of π-conjugated P3HT and optically active ...
Lei Xu, Chao Wang, Yan‐Xiang Li, Xun‐Hui Xu, Li Zhou, Na Liu, Zongquan Wu   +6 more
semanticscholar   +1 more source

Self-trapped exciton engineering for white-light emission in colloidal lead-free double perovskite nanocrystals.

Science Bulletin, 2020
Intrinsic broadband photoluminescence (PL) of self-trapped excitons (STEs) are systematically studied in lead-free double perovskite nanocrystals (NCs).
Muyu Cong, Bin Yang, Feng Hong, Tiancheng Zheng, Youbao Sang, Jingwei Guo, Songqiu Yang, Ke-li Han   +7 more
semanticscholar   +1 more source

White-light emission from AlN dendrites

Journal of Materials Science: Materials in Electronics, 2016
The AlN dendrites were prepared by high temperature plasma nitridation method. The AlN dendrites are composed of hierarchical AlN polycrystal architectures with a wide size range. The photoluminescence spectra of the AlN dendrites exhibit white-light emission including three main bands located at red, green and blue-violet. The multi-colors emission is
Longhai Shen, Xuanshuo Zhang, Janyu Song, Fengqi Li, Dongli Qi   +4 more
openaire   +1 more source

Intrinsic White-Light Emission from Layered Hybrid Perovskites

Journal of the American Chemical Society, 2014
We report on the second family of layered perovskite white-light emitters with improved photoluminescence quantum efficiencies (PLQEs). Upon near-ultraviolet excitation, two new Pb-Cl and Pb-Br perovskites emit broadband "cold" and "warm" white light, respectively, with high color rendition. Emission from large, single crystals indicates an origin from
Emma R, Dohner, Adam, Jaffe, Liam R, Bradshaw, Hemamala I, Karunadasa   +3 more
openaire   +2 more sources

Synthesis of multiple-color emissive carbon dots towards white-light emission

Nanotechnology, 2020
Multiple-color emissive carbon dots (C-dots) are gaining increasing attention in various fields. Herein, we report a facile solvothermal method for the synthesis of multiple-color emissive C-dots with the aim of white-light emission. Under single ultraviolet-light excitation, three C-dots emit a easily controlled fluorescent emission wavelength at 440 ...
Hetong Qi, Xuemei Wu, Hengqi Zhang, Yuhai Tang, Hongfang Gao, Manping Qian, Honglan Qi   +6 more
openaire   +2 more sources

Pure White‐Light Emission of Nanocrystal–Polymer Composites

ChemPhysChem, 2006
Incorporation of semiconductor nanocrystals (NCs) into functional polymers is a highly desirable approach to generate novel materials for use in optoelectronic devices, such as lightemitting diodes (LEDs) and photovoltaic cells. Basic requirement is a good miscibility of the NCs in such a polymer matrix.
Haizhu, Sun, Junhu, Zhang, Hao, Zhang, Yu, Xuan, Chunlei, Wang, Minjie, Li, Ye, Tian, Yang, Ning, Dongge, Ma, Bai, Yang, Zhi Yuan, Wang   +10 more
openaire   +2 more sources