General Information

---

Full name	Poly[(2,6-(4,8-bis(5-(2-ethylhexyl-3-chloro)thiophen-2-yl)-benzo[1,2-b:4,5-b’]dithiophene))-alt-5,5'-(5,8-bis(4-(2-butyloctyl)thiophen-2-yl)dithieno[3',2':3,4;2'',3'':5,6]benzo[1,2-c][1,2,5]thiadiazole)]
Synonyms	PBDBTCl-DTBT
Chemical formula	(C76H92Cl2N2S7)n
CAS number	n.a.
HOMO / LUMO	HOMO = -5.56 eV, LUMO = -2.78 eV [1]
Solubility	THF, o-xylene, chloroform, chlorobenzene and dichlorobenzene
Processing solvents	THF, o-xylene, chloroform, chlorobenzene and dichlorobenzene
Classification / Family	Organic semiconducting materials, Medium bandgap polymers, Organic photovoltaics, Polymer solar cells, Perovskite solar cells, Hole-transport layer materials, NF-PSCs, All-polymer solar cells (all-PSCs).

Chemical Structure

---

Chemical structure of D18-Cl

Characterisations

---

UV-Vis Absorption

UV-Vis absorption of of D18-Cl in chloroform (CF) and in film (as-cast film on glass) and its solubility in THF at 8 mg/ml.

Cyclic Voltammetry

Cyclic voltammograms of the D18-Cl film on platinum electrode in 0.1M Bu4NClO4 in acetonitrile at a scan rate of 100 mV s−1.

The cyclic voltammograms (CV) measurements were recorded on Ossila Potentiostat by using a three-electrode system with platinum disc as the working electrode, platinum wire as the counter electrode, Ag/Ag+ electrode as the reference electrode with a scanning rate of 100 mV/s in a 0.1 M tetrabutylammonium perchlorate (Bu4NClO4) solution. The potential of Ag/Ag+ reference electrode was internally calibrated by using ferrocene/ferroncenium (Fc/Fc+) as the redox couple.