1 Supporting information for Regioselective Stepwise Bromination of Boron Dipyrromethene (BODIPY) Dyes Lijuan Jiao*, Weidong Pang, Jinyuan Zhou, Yun Wei, Xiaolong Mu, Guifeng Bai and Erhong Hao* Laboratory of Functional Molecular Solids, Ministry of Education; Anhui Key Laboratory of Functional Molecular-Based Materials, and School of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui, China 241000 Fax: (+) (+86) 553-388-3517 E-mail: jiao421@mail.ahnu.edu.cn ; haoehong@mail.ahnu.edu.cn Contents: 1. Single crystal X-ray structures of BODIPYs 3a-e, 4c and 6a-b…………………..2 2. Copies of 1 H NMR, 13 C NMR for all new compounds ………………………………...10 3. UV-vis and fluorescence spectra for all the compounds………………..……………....44 4. Photooxidation of 1,3-diphenylisobenzofuran (DPBF) with BODIPYs 2c, 2d and methylene blue……………………………………………………………………………….63