D18-2Br

CAS Number 2433725-51-8

Chemistry Building Blocks, Dibromo Monomers, Heterocyclic Building Blocks, Monomers

Two electron-donating 5-bromo-4-butyloctylthiophene units

Used in the synthesis of polymer D18.

Overview
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D18-2Br (CAS number 2433725-51-8) has a rigid electron accepting dithienobezothiadiazole (DTBT) core with two electron-donating 5-bromo-4-butyloctylthiophene units. The large side alkyl chains are there to promote solubility for solution processing of the end products that acquire D18-2Br as building block.

D18-2Br has been used for the synthesis of polymer D18 which gave a PCE of 18.22% while Y6 was used as the non-fullerene acceptor.

General Information

CAS Number	2433725-51-8
Chemical Formula	C₄₂H₅₄Br₂N₂S₅
Molecular Weight	907.02 g/mol
Full Name	5,8-bis(5-bromo-4-(2-butyloctyl)thiophen-2-yl)dithieno[3',2':3,4;2'',3'':5,6]benzo[1,2-c][1,2,5]thiadiazole
Synonyms	DTBT-2Th48Br
Classification / Family	Dithieno[3',2':3,4;2'',3'':5,6]benzo[1,2-c][1,2,5]thiadiazole (DTBT) derivatives, Organic semiconducting materials, Semiconductor Synthesis, Low band gap polymers, OFETs, OLED, Organic Photovoltaics, NFA-OSCs.

Chemical Structure

d18-2br, CAS# 1639449-99-2 — Chemical structure of D18-2Br, CAS 2433725-51-8

Product Details

Purity	>98%
Melting Point	N/A
Appearance	Orange powder/crystal

MSDS Documentation

D18-2Br MSDS sheet

Literature and Reviews

Multi-channel exciton dissociation in D18/Y6 complexes for high-efficiency organic photovoltaics, Z. Cao et al., J. Mater. Chem. A, 8, 20408-20413 (2020); doi: 10.1039/D0TA07996K.
18% Efficiency organic solar cells, Q Liu et al., Sci. Bull. 65, 272 (2020); doi: 10.1016/j.scib.2020.01.001.
Nonfullerene Acceptors: A Renaissance in Organic Photovoltaics? P. Meredith et al., Adv. Energy Mater., 10 (33); 2001788 (2020); doi: 10.1002/aenm.202001788.

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