✦ LIBER ✦

Electroabsorption of a new urethane-substituted polydiacetylene PDA-5BCMU-4A in a film

✍ Scribed by Wenyan Jia; Kazuhiko Misawa; Hiro Matsuda; Shuji Okada; Hachiro Nakanishi; Takayoshi Kobayashi

Publisher: Elsevier Science
Year: 1996
Tongue: English
Weight: 553 KB
Volume: 255
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(96)00385-5

No coin nor oath required. For personal study only.

✦ Synopsis

An excitonic band with a vibronic sideband shows linear and quadratic Stark shifts in a film of a new polydiacetylene with ~r-conjugation between polymer backbone and substituents, i.e. PDA-5BCMU-4A (polymer from 6,8,10,12octadecatetraynylene bis-(N-butoxycarbonylmethylcarbamate) ), revealing differences in the polarizability A a = 780 e A 2 / V and the static dipole moment A/z = 29 debye between the ground and excitonic states. The electroabsorption peak at 2.23 eV is attributed to a band-to-band transition. The maximum absolute values of the real and imaginary parts of the nonlinear susceptibility near the excitonic transition are 1.4 x 10 -9 and 2.9 x 10 -9 esu, respectively. These results are explained in terms of the higher order due to the planarity of the polymer backbone and side chains in this material. ' ' '0

📜 SIMILAR VOLUMES

A New and Improved N-3 Alkylation of 10-

A New and Improved N-3 Alkylation of 10-Substituted Isoalloxazines Using 1,8-Diazabicyclo[5.4.0]undec-7-ene in Benzene.

✍ Geetanjali Geetanjali; Ram Singh; S. M. S. Chauhan 📂 Article 📅 2003 🏛 John Wiley and Sons ⚖ 102 KB 👁 1 views

Synthesis and in vitro Antimicrobial Act

Synthesis and in vitro Antimicrobial Activity of New Ethyl 2-(Ethoxyphosphono)-1-cyano-2-(substituted tetrazolo[1,5-a]quinolin-4-yl)ethanoate Derivatives

✍ Amol H. Kategaonkar; Sandip A. Sadaphal; Kiran F. Shelke; Atul H. Kategaonkar; B 📂 Article 📅 2010 🏛 John Wiley and Sons 🌐 English ⚖ 88 KB 👁 1 views

1,5-Benzodiazepines. Part 14. Synthesis

1,5-Benzodiazepines. Part 14. Synthesis of New Substituted 9H-Bis-[1,2,4]triazolo[4,3-a:3′,4′.d][1,5]benzodiazepines and Related Compounds Endowed with in vitro Cytotoxic Properties.

✍ Mario Di Braccio; Giancarlo Grossi; Maurizio Ceruti; Flavio Rocco; Roberta Loddo 📂 Article 📅 2005 🏛 John Wiley and Sons ⚖ 27 KB 👁 1 views

ChemInform Abstract: Synthesis and in vi

ChemInform Abstract: Synthesis and in vitro Antimicrobial Activity of New Ethyl 2-(Ethoxyphosphono)-1-cyano-2-(substituted tetrazolo[1,5-a]quinolin-4-yl)ethanoate Derivatives.

✍ Amol H. Kategaonkar; Sandip A. Sadaphal; Kiran F. Shelke; Atul H. Kategaonkar; B 📂 Article 📅 2010 🏛 John Wiley and Sons ⚖ 26 KB 👁 2 views

Tele Nucleophilic Aromatic Substitutions

Tele Nucleophilic Aromatic Substitutions in 1-Nitro-3- and 1,3-Dinitro-5-trichloromethylbenzene, and 3-Trichloromethylbenzonitrile. A New Synthesis of the 1,4-Benzothiazine-3(4H)-one Ring System from 3-Nitrobenzoic Acid

✍ Thomas Giannopoulos; John R. Ferguson; Basil J. Wakefield; George Varvounis 📂 Article 📅 2000 🏛 Elsevier Science 🌐 French ⚖ 173 KB

ChemInform Abstract: Tele Nucleophilic A

ChemInform Abstract: Tele Nucleophilic Aromatic Substitutions in 1-Nitro-3- and 1,3-Dinitro-5-trichloromethylbenzene, and 3-Trichloromethylbenzonitrile. A New Synthesis of the 1,4-Benzothiazine-3(4H)-one Ring System from 3-Nitrobenzoic Acid.

✍ Thomas Giannopoulos; John R. Ferguson; Basil J. Wakefield; George Varvounis 📂 Article 📅 2010 🏛 John Wiley and Sons ⚖ 33 KB 👁 2 views