Functional Polyacetylenes:  Synthesis, Thermal Stability, Liquid Crystallinity, and Light Emission of Polypropiolates

2002 ◽  
Vol 35 (22) ◽  
pp. 8288-8299 ◽  
Author(s):  
Jacky W. Y. Lam ◽  
Jingdong Luo ◽  
Yuping Dong ◽  
Kevin K. L. Cheuk ◽  
Ben Zhong Tang
Keyword(s):  
Thermal Stability ◽  
Light Emission ◽  
Liquid Crystallinity

Silole-containing linear and hyperbranched polymers: synthesis, thermal stability, light emission, nano-dimensional aggregation, and optical power limiting

2003 ◽  
Vol 196 (1) ◽  
pp. 289-300 ◽  
Author(s):  
Jacky Wing Yip Lam ◽  
Junwu Chen ◽  
Charles Chi Wang Law ◽  
Han Peng ◽  
Zhiliang Xie ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Light Emission ◽  
Optical Power ◽  
Hyperbranched Polymers ◽  
Optical Power Limiting

Hyperbranched Poly(phenylenesilolene)s:  Synthesis, Thermal Stability, Electronic Conjugation, Optical Power Limiting, and Cooling-Enhanced Light Emission

2003 ◽  
Vol 36 (12) ◽  
pp. 4319-4327 ◽  
Author(s):  
Junwu Chen ◽  
Han Peng ◽  
Charles C. W. Law ◽  
Yuping Dong ◽  
Jacky W. Y. Lam ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Light Emission ◽  
Optical Power ◽  
Hyperbranched Poly ◽  
Optical Power Limiting

scholarly journals Dual emission from nanoconfined R-phycoerythrin fluorescent proteins for white light emission diodes

RSC Advances ◽  
2019 ◽  
Vol 9 (17) ◽  
pp. 9777-9782 ◽  
Author(s):  
Xiaobin Wang ◽  
Yi Guo ◽  
Zhuoyi Li ◽  
Wen Ying ◽  
Danke Chen ◽  
...  
Keyword(s):  
Thermal Stability ◽  
White Light ◽  
Light Emission ◽  
Fluorescent Proteins ◽  
White Light Emission ◽  
High Quality ◽  
Dual Emission ◽  
Good Thermal Stability ◽  
Dual Color

The nanoconfined R-phycoerythrin protein in ZIF-8 shows dual color emissions and exhibits high-quality white light emission and good thermal stability.

scholarly journals High Thermal Stability Apatite Phosphors Ca2La8(SiO4)6O2:Dy3+/Sm3+ for White Light Emission: Synthesis, Structure, Luminescence Properties and Energy Transfer

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Ning Liu ◽  
Lefu Mei ◽  
Libing Liao ◽  
Jie Fu ◽  
Dan Yang
Keyword(s):  
Thermal Stability ◽  
Energy Transfer ◽  
White Light ◽  
Single Phase ◽  
Light Emission ◽  
High Thermal Stability ◽  
White Light Emission ◽  
Luminescence Properties ◽  
Potential Candidate ◽  
Co Doped

Abstract What ideal w-LED phosphors always aim to do is to achieve a single phase near-sunlight emission phosphor simultaneously with both high luminescence efficiency and high thermal stability at operation temperature. And It is well known that apatite compound phosphors are one of the most promising optical materials to realize those above because of their unique structure enhanced luminescence properties and thermal stability. Here, we synthesized a co-doped single phase apatite phosphors Ca2La8(SiO4)6O2:Dy3+/Sm3+ (CLSO:Dy3+/Sm3+) for white light emission, which was provided with excellent thermal stability and of which luminescence intensity at 150 °C still was 92 percentage of that at room temperature. Moreover, X-ray diffraction technique, Fourier transform infrared spectroscopy, scanning electron microscope were employed to characterization of phase structure and morphology, and consequently pure apatite structure and gravel-like morphology of phosphors were proved. Analysis of photoluminescence spectra indicated that concentration quenching effect exist in single-doped CLSO:Dy3+ phosphors owing to dipole-dipole interaction between Dy3+ ions. It is revealed that maybe exist Dy3+ ↔ Sm3+ bilateral non-radiative energy transfer processes in Dy3+/Sm3+ co-doped CLSO system by PL spectra and decay curves. And variation of Sm3+ ion concentration can control color emission, namely CIE chromaticity coordinates and correlated color temperature, finally to achieve white light emission (0.309,0.309) with CCT 6848 K, able to be a potential candidate for commercial lighting applications.

Organic Light-Emitting Diodes Using Triphenylamine Based Hole Transporting Materials

2000 ◽  
Vol 621 ◽  
Author(s):  
Hisayoshi Fujikawa ◽  
Masahiko Ishii ◽  
Shizuo Tokito ◽  
Yasunori Taga
Keyword(s):  
Thermal Stability ◽  
Light Emission ◽  
Light Emitting Diode ◽  
Hole Transport ◽  
Transport Layer ◽  
Hole Transport Layer ◽  
Light Emitting ◽  
Hole Transporting ◽  
Hole Transporting Material ◽  
Increasing Temperature

ABSTRACTThe durability of the tris(8-quinolinolato) aluminum based light-emitting diode (LED) is related to the thermal stability of the hole transport layer. Several linear linkage triphenylamine oligomers were used for the hole transport layer. The thermal stability was clearly seen to depend on a glass transition temperature (Tg) of the hole transporting material, and a linear relationship between the Tg and the thermal stability was found. A lowering of “turn-on voltage” for light emission and an increase of luminous efficiency with increasing temperature was also observed. Excellent durability of the organic LED with a tetramer of triphenylamine was achieved at a high temperature of 120°C. Our results indicate that the linear linkage of triphenylamine leads to a high Tg and high device performance at high temperatures.

Synthesis, thermal stability, light emission, and fluorescent photopatterning of poly(diphenylacetylene)s carrying naphthalene pendant groups

Polymer ◽  
2006 ◽  
Vol 47 (19) ◽  
pp. 6642-6651 ◽  
Author(s):  
Charles C.W. Law ◽  
Jacky W.Y. Lam ◽  
Anjun Qin ◽  
Yongqiang Dong ◽  
Hoi Sing Kwok ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Light Emission
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