摘要
Based on three rationally designed pyrrole-appended o-carborane derivatives,we present that fluores-cence properties of crystalline materials are highly dependent on intermolecular interaction and steric hinderance.Though the three molecules are similar in structure,single crystals of the three compounds showed obvious difference in molecular stacking and fluorescence behavior.Systematic studies indicate that fluorescence quantum yields,thermo-response as well as mechano-response are highly dependent on intermolecular interaction and steric hindrance.In the three crystalline materials,the CB-NMe crys-tals with weaker intermolecular interaction and looser molecular packing showed superior fluorescence quantum yield and temperature sensitivity.Accordingly,surface temperature detection strip with favor-able reversibility is prepared by doping CB-NMe into the polymer.In addition,the CB-NMe aggregates can be used for monitoring bovine serum albumin(BSA)denaturation,as temperature response of the aggregates can be reversed when co-assembled with BSA.
基金
funding from the Natural Science Foundation of China (Nos. 22072084, 21820102005)
111 Project (No. B14041)
the Fundamental Research Funds for the Central Universities (Nos. GK202103048, GK202001005, 2020CSLY008)
the Innovation Capability Support Program of Shaanxi (No. 2021TD-18)
