Zhenghua Zhu's research while affiliated with East China University of Science and Technology and other places
What is this page?
This page lists the scientific contributions of an author, who either does not have a ResearchGate profile, or has not yet added these contributions to their profile.
It was automatically created by ResearchGate to create a record of this author's body of work. We create such pages to advance our goal of creating and maintaining the most comprehensive scientific repository possible. In doing so, we process publicly available (personal) data relating to the author as a member of the scientific community.
If you're a ResearchGate member, you can follow this page to keep up with this author's work.
If you are this author, and you don't want us to display this page anymore, please let us know.
It was automatically created by ResearchGate to create a record of this author's body of work. We create such pages to advance our goal of creating and maintaining the most comprehensive scientific repository possible. In doing so, we process publicly available (personal) data relating to the author as a member of the scientific community.
If you're a ResearchGate member, you can follow this page to keep up with this author's work.
If you are this author, and you don't want us to display this page anymore, please let us know.
Publications (12)
The optical absorption, photostability and energy conversion efficiency of a series of heptamethine IR dyes are reported and results related to chemical structure. The high photostability and high laser energy conversion efficiency of several of the dyes indicate potential use in IR dye lasers.
Several new heptamethine thiapyrylium and pyrylium dyes have been synthesized by a simple and efficient procedure starting from enaminium and heterocyclic salts. The structure of the compounds was confirmed by elemental analysis, mass spectrometry and 1H NMR.
ESR studies have been made on the supersensitization of naphthothiacarbocyanine (NTCC) by some holopolar trinuclear cyanine dyes (TNC). It was found that some allopolar trinuclear cyanine dyes containing an acidic nucleus [GRAPHICS] (existing in holopolar form) can supersensitize NTCC very well; there is good correlation between DELTAI(ESR) and inc...
Three new heptamethine thiapyrylium dyes containing a disubstituted amino group on the meso position in their bridged chain were investigated. 4.30 to 5.10% of the pump energy was converted to an intense infrared pulse with wavelength between 1.35 and 1.65 mum. The relation between lasing efficiency and dye concentration was also studied. These dye...
The reactions of thiazole ethiodide with aromatic aldehydes in the presence of piperidine as catalyst were investigated. It is found that the reaction is of second order. The mechanism was proposed. The rate constants, activation energies of the reactions and the thermodynamic parameters of activation were also calculated and discussed.
Three new heptamethine pyrylium dyes containing a disubstituted amino group on the meso position in
their bridged chain were investigated. The solutions of the dyes in 1,2-dichloroethane (DCE) of
concentration ca. 10-3 M act as laser dyes transversely pumped by a Q-switched Nd:YAG laser as a
pumping source. 5.6 to 9.6% of the pump energy was conver...
A series of new heptamethine pyrylium dyes derived from enamine and enaminium salts has been prepared. Spectral absorptions of these dyes range from 850 nm to 1160 nm. Relation between the structure and chromophore has been discussed and kinetic study has been made on the configuration isomerization of the dyes. Photostability has been investigated...
Six polymethine styryl cyanine dyes have been synthesised. The solvent effects on the maximum absorption wavelength, Stokes shifts, and fluorescence efficiencies of these dyes have been studied. E.G. McRae equation and M.F. Nicol equation describing solvent effects on absorption wavelength have been compared, and it is found that E.G. McRae equatio...
IR studies have been made on dicarbocyanines and/or triazino stilbenedisulfonic acids adsorbed on the surface of AgBr grains, and the results indicate that the dye and supersensitizer are adsorbed in a way different from that described by O. Riester due to molecular interaction through opposite charges. Light-induced ESR signals of the dyes and/or...
Citations
... Mass spectra reveals molecular ion peaks at m/z =571 and base peak at m/z =158 for 23d; a molecular ion peaks at m/z =656 and base peak at m/z =60 for 24d; a molecular ion peaks at m/z =854 and base peak at m/z=123 for 25b; molecular ion peaks at m/z =884 and base peak at m/z=201 for 26a; molecular ion peaks at m/z=819 and base peak at m/z =63 for 28b, molecular ion peaks at m/z =817 and base peak at m/z=64 for 29b,molecular ion peaks at m/z =667 and base peak at m/z=51 for 30. 1 (23a-d, 24a-d). This can be explained from the extending of delocalization through three rings in case of dyes 24a-d. ...
... SOH lasers have the potential to cover a broad range of different emission wavelengths between 1.1 and 1.6 mm by using suitable dye materials 34,35 . Due to the high output power, the devices may even be used for exploiting nonlinear optic effects in nanophotonic waveguides. ...
Reference: Lasing in silicon–organic hybrid waveguides
