Synthesis and Optical Properties of Asymmetric Naphthylmethylene 1,3,4-Oxadiazole Derivatives

2014 ◽  
Vol 1033-1034 ◽  
pp. 1109-1113
Author(s):  
Ting Feng Tan ◽  
Bian Peng Wu ◽  
Li Gang Bai ◽  
Yan Xia Li ◽  
Ming Jie Zhang
Keyword(s):  
Optical Properties ◽  
Charge Transfer ◽  
Fluorescence Spectroscopy ◽  
Fluorescence Intensity ◽  
Absorption Maximum ◽  
Intramolecular Charge Transfer ◽  
Bathochromic Shift ◽  
Transfer Effect ◽  
Uv Absorption ◽  
Oxadiazole Derivatives

Asymmetric 2-p-nitrophenyl-5-naphthylmethylene-1,3,4-oxadiazole and 2-p-aminophenyl-5-naphthylmethylene-1,3,4-oxadiazole were synthesized and characterized by IR、1HNMR and MS analysis, and their optical properties were detected using UV-vis absorption spectroscopy and fluorescence spectroscopy. The existence of electron-withdrawing oxadiazole units causes a significant bathochromic shift of the UV absorption maximum. The largest UV-absorption peak of target compounds is in the range of 298-317 nm, and a new emission band at 402 nm is formed. The fluorescence intensity is gradually enhanced, which strengthens the intramolecular charge transfer effect between the electron-withdrawing oxadiazole and electron-donating aniline.

Effects of molecular geometry on the efficiency of intramolecular charge transfer–based luminescence in o-carboranyl-substituted 1H-phenanthro[9,10-d]imidazoles

2022 ◽  
Author(s):  
Sehee Im ◽  
Chan Hee Ryu ◽  
Mingi Kim ◽  
Dong Kyun You ◽  
Sanghee Yi ◽  
...  
Keyword(s):  
Optical Properties ◽  
Charge Transfer ◽  
Phenyl Ring ◽  
Intramolecular Charge Transfer ◽  
Molecular Geometry

Herein, we compared the optical properties of four compounds with an o-carborane cage linked to 1H-phenanthro[9,10-d]imidazole at the ortho- (oPC), meta- (mPC), or para-position (pPC) of the 2-phenyl ring or...

Halide Ion Complexes of Decaborane (B10H14) and Their Derivatives: Noncovalent Charge Transfer Effect on Second-Order Nonlinear Optical Properties

2012 ◽  
Vol 116 (5) ◽  
pp. 1417-1424 ◽  
Author(s):  
Shabbir Muhammad ◽  
Takuya Minami ◽  
Hitoshi Fukui ◽  
Kyohei Yoneda ◽  
Ryohei Kishi ◽  
...  
Keyword(s):  
Optical Properties ◽  
Charge Transfer ◽  
Nonlinear Optical ◽  
Transfer Effect ◽  
Second Order ◽  
Nonlinear Optical Properties
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