Cited by 160Organic Electronics and PhotovoltaicsOrganic Light-Emitting Diodes ResearchOrganoboron and organosilicon chemistry

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Band Gap Control in Conjugated Oligomers via Lewis Acids

Welch, Gregory C., Coffin, Robert, Peet, Jeff, Bazan, Guillermo C.·2009·Journal of the American Chemical Society

DOI 10.1021/ja902789w

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Abstract

A simple and effective strategy for optical band gap control is demonstrated through the use of a novel small acceptor/donor/acceptor molecule, 1, and group-13 Lewis acids. Chromophore 1 contains a dithienolesilole donor unit end-capped with benzo-2,1,3-thiadiazole (BT) acceptor units. Addition to 1 of stoichiometeric quantities of Lewis acids of varying strength resulted in the formation of Lewis adducts with progressively red-shifted primary charge-transfer absorption bands. These complexes have absorption spectra that approach those of known conjugated copolymers containing related units. NMR spectroscopy and X-ray diffraction studies revealed that 1 binds 2 equiv of Lewis acid via the nitrogen at the 3-position of BT.

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Authors: Welch, G. C., Coffin, R., Peet, J., & Bazan, G. C.
Affiliations: University of California, Santa Barbara (US)
Corresponding author: Bazan, Guillermo C.
ORCID: Welch, Gregory C.
Bazan, Guillermo C.
Venue: Journal of the American Chemical Society
Publisher: American Chemical Society (ACS)
Published: 2009-07-08
Volume: 131
Issue: 31
Pages: 10802-10803
ISSN: 0002-7863 (ISSN-L)
1520-5126
DOI: 10.1021/ja902789w
OpenAlex: W1978926229
Cited by: 159
References: 24
Citations by year: 2026: 2 · 2025: 2 · 2024: 8 · 2023: 11 · 2022: 11 · 2021: 7 · 2020: 10 · 2019: 12 · 2018: 11 · 2017: 6 · 2016: 12 · 2015: 13 · 2014: 9 · 2013: 9 · 2012: 12
FWCI: 9.52
Type: journal article
Language: en
Open access: closed
Locations: Journal of the American Chemical Society (publishedVersion)
PubMed (publishedVersion)
Topics: Physical Sciences › Engineering › Electrical and Electronic Engineering › Organic Electronics and Photovoltaics
Physical Sciences › Engineering › Electrical and Electronic Engineering › Organic Light-Emitting Diodes Research
Physical Sciences › Chemistry › Organic Chemistry › Organoboron and organosilicon chemistry
Keywords: conjugated oligomers, Lewis acid adducts, benzo[2,1,3]thiadiazole, charge-transfer absorption, bathochromic shift, conjugated copolymers

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Band Gap Control in Conjugated Oligomers via Lewis Acids

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