3,4-dibutyl-5-(2-trimethylsilylethynyl)thiophene-2-carbaldehyde

3,4-dibutyl-2,5-bis[2-(3,4-dibutyl-5-iodothiophen-2-yl)ethynyl]thiophene

2-(3,4-dibutyl-5-iodothiophen-2-yl)ethynyl-trimethylsilane

2-[3,4-dibutyl-5-(2-phenylethynyl)thiophen-2-yl]ethynyl-trimethylsilane

3,4-dibutyl-2-ethynyl-5-(2-phenylethynyl)thiophene