Condensed polycyclic conjugated polymers and their use for biological detection

A conjugated polymer of Formula 1 comprising a conjugated segment composed of x distinct comonomer units (Mr-1 to Mr-x) that are randomly distributed along the conjugated polymer backbone:

• wherein:
• Mr-1 is a condensed polycyclic aromatic or heteroaromatic comonomer comprising four or more 5-membered and/or 6-membered rings;
• Mr-2 to Mr-x are distinct comonomer units each independently selected from ethenylene, acetylene, an aryl, a heteroaryl, and a fluorescent dye FD;
• m1 is an integer greater than or equal to 5;
• and
• m2 to mx are each independently an integer from 0 to 200;
• wherein:
• (1) the sum of m1 through mx is ≥10;
• and
• (2) at least one comonomer of Mr1 to Mr-X comprises a water soluble group (WSG);
• and
• (3) optionally, at least one comonomer of Mr1 to Mr-X comprises a functional group (FG) or linked biological substrate (L-BS).