10.1021/acsami.8b01624.s001 Ningwei Sun Ningwei Sun Kaixin Su Kaixin Su Ziwei Zhou Ziwei Zhou Ye Yu Ye Yu Xuzhou Tian Xuzhou Tian Daming Wang Daming Wang Xiaogang Zhao Xiaogang Zhao Hongwei Zhou Hongwei Zhou Chunhai Chen Chunhai Chen AIE-Active Polyamide Containing Diphenylamine-TPE Moiety with Superior Electrofluorochromic Performance American Chemical Society 2018 AIE-Active Polyamide Containing Diphenylamine-TPE Moiety application polymer film contrast Superior Electrofluorochromic Performance Electrofluorochromism response electrofluorochromic polyamide electrochemical cycling stability fluorescence 2018-04-19 00:00:00 Journal contribution https://acs.figshare.com/articles/journal_contribution/AIE-Active_Polyamide_Containing_Diphenylamine-TPE_Moiety_with_Superior_Electrofluorochromic_Performance/6179039 Electrofluorochromism has attracted great attention due to the intelligence optoelectronic and sensing applications. The intrinsically switchable fluorophores with high solid-state fluorescence are regarded as key for ideal electrofluorochromic materials. Here, we reported an AIE-active polyamide with diphenylamine and tetraphenylethylene units, showing high fluorescence quantum yield up to 69.1% for the solid polymer film and stable electrochemical cycling stability. The polyamide exhibited reversible color and emission switching even in hundreds of cycles, and the fluorescence on/off contrast ratio was determined up to 417, which is the highest value to our knowledge. Furthermore, as the response time is vital for the real-life applications, to speed up the response of electrofluorochromism, a porous polymer film was readily prepared through a facile method, notably exhibiting high fluorescence contrast, long-term stability and obviously improved response, due to the sharply increased surface area. Therefore, the AIE-functionalization combining the porous structure strategy will synergistically and dramatically improve the electrofluorochromic performance, which will also promote their practical applications in the near future.