Read e-book online 1, 1-binaphthyl-based Chiral Materials: Our Journey PDF

By Lin Pu

ISBN-10: 1848164114

ISBN-13: 9781848164116

ISBN-10: 1848164122

ISBN-13: 9781848164123

Chiral fabrics were studied within the division of Chemistry on the college of Virginia for functions in components like uneven catalysis, enantioselective fluorescent sensing, and optical/electrical fabrics. Optically lively 1,1 -binaphthyl molecules are used to construct novel chiral polymers, dendrimers, macrocycles, and acyclic molecules. 1,1 -Binaphthyl molecules are selected due to their remarkably good chiral configuration in addition to their excessive uneven inductions in lots of tactics. during this booklet, either the elemental wisdom concerning the 1,1 -binaphthyl molecules and the synthesis of the structurally different 1,1 -binaphthyl-based fabrics are defined. The functions of those fabrics in a variety of fields also are mentioned. This publication will function a reference for graduate scholars in addition to different execs operating within the similar fields. creation approximately 1,1 -Binaphthyls major Chain Chiral-Conjugated Polymers Polybinaphthyls in uneven Catalysis uneven Catalysis via BINOL and Its Non-Polymeric Derivatives Enantioselective Fluorescent Sensors in keeping with 1,1 -Binaphthyl Derived Dendrimers, Small Molecules and Macrocycles Miscellaneous reports on fabrics regarding 1,1 -Binaphthyls

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Extra info for 1, 1-binaphthyl-based Chiral Materials: Our Journey

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3 in toluene solution is about 80% as estimated by comparison with 9-anthracene carboxylic acid. 3, which is found to be 50%. 3 has enhanced its fluorescence quantum efficiency. 4 shows emission at 433, 463 and 494 (sh) nm when excited at 386 nm. The thin films of the polymers can be obtained by spin-coating their solutions onto glass slides. When these thin films are exposed to the acetonitrile solution of NOBF4 , the main chain chiral-conjugated polymers are oxidatively doped. 3 is in the range of 4 × 10−5 to 7 × 10−5 scm−1 .

4 shows emission at 433, 463 and 494 (sh) nm when excited at 386 nm. The thin films of the polymers can be obtained by spin-coating their solutions onto glass slides. When these thin films are exposed to the acetonitrile solution of NOBF4 , the main chain chiral-conjugated polymers are oxidatively doped. 3 is in the range of 4 × 10−5 to 7 × 10−5 scm−1 . 3 are amorphous. 3 is stable up to 340◦ C under nitrogen as shown by thermogravimetric analysis (TGA). Its glass transition temperature (Tg ) is 210◦C as determined by differential scanning calorimetry (DSC).

In general, using Pd(PPh3 )4 produces higher molecular weight polymer than using PdCl2 . 14. 10b. 11a–c. All these polymers are soluble in organic solvents. 11c. 11a–c, the optical rotation of these chiral polymers increases with increasing molecular weight of the polymers. 9. 12 inverts the optical rotation. 10c is stable up to 396◦ C. From 396 to 486◦C, this polymer loses its alkyl groups. After the loss of the alkyl groups, it becomes extremely stable with no significant weight loss up to 800◦ C.

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1, 1-binaphthyl-based Chiral Materials: Our Journey by Lin Pu


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