The synthesis and characterisation of a photoresponsive 3,3-diphenyl-3H-pyrano[3,2-f]quinoline ligand which contains both quinoline and thiazole N-donor moieties is described. This ligand acts as a bidentate N-donor ligand and the solid-state structure of a Ag(I) complex is reported. Whereas the free ligand exhibits typical photochromic behaviour, coordination with Ag(I) results in complete inhibition of the photochromic response. However, excitation wavelength dependent emission spectra demonstrated an increase in fluorescence response of the new Ag(I) complex.

中文翻译：

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通过与Ag（I）离子配位抑制3,3-二苯基-3 H-吡喃并[3,2- f ]喹啉配体的光致变色行为

描述了包含喹啉和噻唑N-供体部分的光响应性3,3-二苯基-3 H-吡喃并[3,2- f ]喹啉配体的合成和表征。该配体充当双齿N-供体配体，并且报道了Ag（I）配合物的固态结构。游离配体表现出典型的光致变色行为，而与Ag（I）的配位导致对光致变色反应的完全抑制。然而，激发波长相关的发射光谱证明了新型Ag（I）配合物的荧光响应增加。