Reversible Thermochromism of Aggregation-Induced Emission-Active Benzophenone Azine Based on Polymorph-Dependent Excited-State Intramolecular Proton Transfer Fluorescence
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https://figshare.com/articles/dataset/Reversible_Thermochromism_of_Aggregation_Induced_Emission_Active_Benzophenone_Azine_Based_on_Polymorph_Dependent_Excited_State_Intramolecular_Proton_Transfer_Fluorescence/2441092
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资源简介：
In this work, (2-hydroxy-4-methoxyphenyl)(phenyl)methanone
azine
(1) was found to exhibit aggregation-induced emission
(AIE) and tunable solid fluorescence upon alternate annealing/melting
treatments. According to the characterizations by X-ray crystallography,
X-ray powder diffraction, and differential scanning calorimetry, the
switching between the two different polymorphs was responsible for
the tunable solid fluorescence as a consequence of polymorph-dependent
excited-state intramolecular proton transfer (ESIPT) fluorescence,
while the thermochromism was contributed by the conformational flexibility
of rotary phenyl rings. The change in the tightness of packing upon
annealing or melting thermal treatments resulted in the emission at
different wavelengths. Therefore, polymorph-dependent ESIPT fluorescence
could be utilized as a new strategy to develop efficient AIE-active
materials in response to external stimuli.
创建时间：
2013-02-21
