| abstract |
There is provided a thiophene derivative represented by the following formula (1). Wherein R 1 to R 4 are independently selected from alkyl, alkenyl, alkynyl, alkoxy, alkenyloxy, alkynyloxy, alkylthio, alkynylthio, aryloxy, heteroaryloxy, arylthio, or heteroarylthio, R 5 to R 8 are independently selected from the group consisting of hydrogen, alkyl, alkenyl, alkynyl, alkoxy, alkenyloxy, alkynyloxy, alkylthio, alkynylthio, aryloxy, heteroaryloxy, arylthio, or heteroarylthio , R 9 to R 12 represent hydrogen, alkyl, alkenyl, alkynyl, alkoxy, alkenyloxy, alkynyloxy, alkylthio, alkynylthio or aryl. |