Detail of "272-43-5"

Reference

Synthesis of new thiophenic heterocyclic systems from 3,4-diaminothiophene

Synthesis of new thiophenic heterocyclic systems from 3,4-diaminothiophene. Outurquin, Francis; Paulmier, Claude (Lab. Chim. Org., UER Sci. Tech., Mont Saint Aignan. F-76130, Fr.). Bull. Soc. Chim. Fr., (5-6, Pt. 2), 159-63 (French) 1983. CODEN: BSCFAS. ISSN: 0037-8968. DOCUMENT TYPE: Journal CA Section: 28 (Heterocyclic Compounds (More Than One Hetero Atom)) 3,4-Diaminothiophene (I) reacted with CS2 in alk. medium to yield 2-mercaptothieno[3,4-d]imidazole. Thieno[3,4-b]pyrazines and thieno[3,4-b]-1,4-diazepines have been synthesized by cyclization with a-dicarbonyl compds. or 1,3-diketones. Pyrido[2',3':3,2]thieno[4,5-b]pyridines are obtained by a double Skraup synthesis or condensation with MeCOCH:CH2. 90093-91-7 and 90070-23-8 are just another two chemicals used in this study. 3,4-Diamino-2,5-thiophenedithiocyanate appears to be an interesting precursor for thiazolo[4',5':3,2]thieno[4,5-d]thiazole, 1,2,3-thiadiazolo[4',5':3,2]thieno[4,5-d]-1,2,3-thiadiazole and 1,4-thiazino[2',3':2,3]thieno[5,4-b]-1,4-thiazines. .

Conjugated Donor-Acceptor Copolymer Semiconductors with Large Intramolecular Charge Transfer: Synthesis, Optical Properties, Electrochemistry, and Field Effect Carrier Mobility of Thienopyrazine-Based Copolymers

All Rights Reserved. Several substances are used for example 152269-98-2 and 918298-64-3 which are their cas registry numbers. Conjugated Donor-Acceptor Copolymer Semiconductors with Large Intramolecular Charge Transfer: Synthesis, Optical Properties, Electrochemistry, and Field Effect Carrier Mobility of Thienopyrazine-Based Copolymers. Zhu, Yan; Champion, Richard D.; Jenekhe, Samson A. (Department of Chemical Engineering and Department of Chemistry, University of Washington, Seattle, WA 98195-1750, USA). Macromolecules, 39(25), 8712-8719 (English) 2006 American Chemical Society. CODEN: MAMOBX. ISSN: 0024-9297. DOCUMENT TYPE: Journal CA Section: 35 (Chemistry of Synthetic High Polymers) Section cross-reference(s): 36, 73, 76 Several conjugated thieno[3,4-b]pyrazine-based donor-acceptor copolymers were synthesized by Stille and Suzuki copolymns., and their optical, electrochem., and field-effect charge transport properties were characterized. The copolymers, poly(5,7-bis(3-dodecylthiophen-2-yl)thieno[3,4-b]pyrazine) (BTTP), poly(5,7-bis(3-dodecylthiophen-2-yl)thieno[3,4-b]pyrazine-alt-2,5-thioph ene) (BTTP-T), poly(5,7-bis(3-dodecylthiophen-2-yl)thieno[3,4-b]pyrazine-alt-9,9-dioctyl -2,7-fluorene) (BTTP-F), and poly(5,7-bis(3-dodecylthiophen-2-yl)thieno[3,4-b]pyrazine-alt-1,4-bis(de cyloxy)phenylene) (BTTP-P), have moderate to high mol. wts., broad optical absorption bands that extend into the near-IR region with absorption maxima at 667-810 nm, and small optical band gaps (1.1-1.6 eV). They showed ambipolar redox properties with low ionization potentials (HOMO levels) of 4.6-5.04 eV. The field-effect mobility of holes varied from 4.2 ′ 10-4 cm2/(V s) in BTTP-T to 1.6 ′ 10-3 cm2/(V s) in BTTP-F. Thieno[3,4-b]pyrazine-based donor-acceptor copolymers combine small optical band gaps with fairly high carrier mobilities and thus are promising for org. electronic devices. .