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2026 - JiNan Vican

Yearly Archives - 2026

Mechanism of photochromism

It was mentioned earlier that there are two independent chromophores in fulgide molecules. Kurita et al. studied the excited state characteristics of phenyl-substituted fulgide, and found that when fulgide molecules were excited by ultraviolet light, only excited singlets were generated, and some fluorescence of fulgide could be observed at low temperature. The existence of (n, r ") excited singlet was further confirmed in nanosecond laser flash photolysis experiment, and no evidence of excited triplet was observed, and oxygen had...

Friday April 3rd, 2026Technical SupportRead more...

Several ways of molecular excitation

(1) Thermal excitation to excite electrons in normal state molecules requires a large amount of energy, which can only be achieved in flames and high-temperature furnaces. The energy required to excite molecular vibrations is much smaller, but only a certain proportion of molecular vibrations in heated gases are excited. In normal temperature gases, molecules are in rotation, and the energy required to excite molecular rotation is even smaller. The characteristic of thermal excitation is that the number of molecules...

Thursday February 26th, 2026Other Articles, Technical SupportRead more...

Application of luminescent powder in printing paste

The preparation and application methods of luminous printing paste described in this paper are for reference only, and corresponding adjustments should be made in practical application. Select medium-sized or alkaline transparent printing paste and D-type or S-type luminescent pigment with the weight ratio of 20-50%, and mix them evenly. Adjust the viscosity with the corresponding diluent. Before printing luminescent printing paste, you should first lay a layer of white background. The following transparent printing pastes are available for selection. Nylon printing paste Advanced...

Tuesday January 27th, 2026Other ArticlesRead more...

The development of blue long-lasting phosphorescent materials for fibers

The main raw material for preparing blue light night glow fibers is the rare earth long-lasting phosphorescent material that can emit blue light. The research fields of blue light long-lasting phosphorescent materials include the metal sulfide system, the aluminum oxide system, and the silicate system. In 1866, French chemist Theodore Sidot prepared ZnS-based sulfide phosphorescent materials, which belong to the first generation of long-lasting phosphorescent materials. Since the 1920s, people have begun to develop blue light sulfide system long-lasting...

Sunday January 4th, 2026Other ArticlesRead more...

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