A Biomimetic Supramolecular Approach for Charge Transfer between Donor and Acceptor Chromophores with Aggregation‐Induced Emission. Issue 55 (16th September 2018)

• Record Type: Journal Article
• Authors: Chen, Jing‐Yu; Kadam, Gajanan; Gupta, Akhil; Anuradha, ; Bhosale, Sheshanath V.; Zheng, Fei; Zhou, Chun‐Hua; Jia, Bao‐Hua; Dalal, Dipak S.; Li, Jing‐Liang
• Is Part Of: Chemistry. Volume 24:Issue 55(2018)
• Page Start: 14668
• Page End: 14678
• Publication Date: 2018-09-16
• Subjects: aggregation-induced emission -- charge transfer -- gels -- self-assembly -- supramolecular chemistry; Chemistry -- Periodicals; 540
• DOI: 10.1002/chem.201803158
• Languages: English
• ISSNs: 0947-6539

Abstract

Abstract: Supramolecular assembly of chromophores with inherent resistance to aggregation‐induced self‐quenching is significant to applications such as chemical sensing and organic light emitting diodes (OLEDs). In this work, molecular gels with aggregation‐induced emission (AIE) are constructed by simply coassembling AIE chromophores (electron donor or acceptor) with a nonfluorescent molecular gelator. The binary gels are fluorescent even at very low concentrations of the AIE chromophores, indicating that the rotation of their aromatic cores is restricted in the gel network. In tertiary gels, the fluorescence of the donor chromophore can be efficiently reduced by the acceptor chromophore through a combination of static and dynamic quenching process, via charge transfer from the donor to the acceptor. This work demonstrates a convenient approach to fabricate a supramolecular charge transfer system using an AIE donor and acceptor. Abstract : Supramolecular assembly of chromophores : Self‐quenching of chromophore molecules upon aggregation reduces energy conversion efficiency and performance of optoelectronic devices. In this work, supramolecular gels of chromophores with aggregation‐induced emission are constructed. The gels demonstrate efficient charge transfer from donor to acceptor chromophores (see figure).