Small organic luminescent molecule of 8-hydroxyquinoline aluminum (Alq

3

) as an active optical guest was incorporated into the one-dimension channels of MCM-41.The assemblies were characterized by means of XRD

IR and PL.The results from XRD patterns suggest that the Alq

3

-MCM-41 also have the typical mesoporous structure

but the channels were partially destroyed by the entrance of Alq

3

.The appearance of absorption band at 1 542 cm

-1

in IR absorption spectra shows that there is strong binding force between MCM-41 and Alq

3

in the assembly.As a result of the existence of Alq

3

both of the Alq

3

-MCM-41 and the mechanical mixture have a strong absorption of the excitated light

although the form is different.In the former the Alq

3

is bonded with the hydroxyl of MCM-41

while in the latter it is physically adsorbed in the surface.Alq

3

-MCM-41 has excellent luminescent property owing to the energy transfer between the host and the guest

which is mainly due to the mutual effect of the hybrid inorganic-organic material

and the luminescent intensity strengthens significantly as the content of Alq

3

increases.So the luminescent efficiency is improved corre-spondingly.When it is up to 0.60 g

the relative intensity is as strong as that of the Alq

3

powder.The micro-environment in the ordered channels of MCM-41 increases the dispersion of Alq

3

molecules

decreasing the aggregation among the molecules

and then the luminescence intensity is effectively enhanced.It also can be seen that MCM-41 is a good host for the Alq

3

molecule.The assembly synthesized has the advantage of both the inorganic mesoporous material MCM-41 and the organic Alq

3

so Alq

3

-MCM-41 has a good heating

chemical and mechanical stability

it also has a strong luminescent efficiency.Thus the assembly having a steady luminescent property will make a new way for Alq

3

in the application in electronic apparatus and establish a firm base for the synthesis of luminescent materials with excellent properties.