Additions and corrections, Chem. Commun.

Additions and corrections

Development of a new benzo(1,2-b:4,5-b′)dithiophene-based copolymer with conjugated dithienylbenzothiadiazole–vinylene side chains for efficient solar cells

Zhaojie Gu, Ping Shen, Sai-Wing Tsang, Ye Tao, Bin Zhao, Peng Tang, Yujuan Nie, Yan Fang and Songting Tan

Chem. Commun., 2011, 9381–9383 (DOI: 10.1039/c1cc12851e) Amendment published 3rd January 2012

In this communication, the curves for PTG1 in dilute chloroform solution and in a film in Fig. 1 are incorrect, and the corresponding expression "absorption peak at ~340 nm" (line 32, left column, page 9382) and "(~454 nm)" (line 34, left column, page 9382) and "2.03 eV" (line 2, right column, page 9382) are also incorrect.

The corrected Fig. 1 and corresponding expressions are given below:

Fig. 1 UV-vis absorption spectra of PTG1 in dilute chloroform solution and a film of a pure polymer or polymer/PC₇₁BM (1/1, w/w, 120 nm) blend on a glass substrate.

Line 32-34, left column, page 9382: absorption peak at ~390 nm corresponds to the π-π* transition of the polymer backbone and the peak at the longer wavelength (504 nm) is attributed to the weak intramolecular

Line 2, right column, page 9382: calculated from the onset of the film absorption is 1.92 eV.

The Royal Society of Chemistry apologises for this error and any consequent inconvenience to authors and readers.

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