Photo responsive material employing a thiophene derivative havin

Details Photo responsive material employing a thiophene derivative havin Photo responsive material employing a thiophene derivative havin

1993-06-21

1994-06-14

Bowers, Jr., Charles L.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

430342, 430343, 430945, 430962, 430 19, 252586, 20415715, G03C 173

Patent

active

053209362

ABSTRACT:
Thiophene derivatives represented by the general formula (I): ##STR1## where R is an aldehyde, carboxyl, C.sub.1-5 -alkyl ester or C.sub.1-5 -alkyl acetal group and n is 3 to 5, are prepared. These compounds are reversibly converted to their respective isomers by light irradiation, accompanied with a large shift of absorption and emission bands, thus suitable for a photo-responsive material.

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Norval et al., Photochemistry and Photobiology, vol. 49, No. 5, pp. 633-639, "Urocanic Acid Analogs . . . " (1989).
Trippett et al., "The use, in Wittig Reactions . . . A basic Group" J. Chem. Soc., vol. 1266, pp. 2130-2133 (1961).
Archer et al., "Electrophilic Aromatic Substitution . . . benzene" J. Chem. Soc., Perkin Trans. II, pp. 813-819 (1983) [Paper 2/13351].

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