Abstract: An ultraviolet absorbing material prepared by reacting (a) an aminosilane compound of general formula (1) or a derivative thereof wherein R1 is C1-C10 alkylene or —(CH2)m—NH— (wherein m is an integer of 1 to 4); R23 s are each independently hydrogen, hydroxyl, halogeno, C1-C10 alkyl or C1-C10 alkoxy, with the proviso that at least one of R2 is C1-C10 alkoxy; and n is an integer of 0 or above with (b) an ultraviolet absorber having a carboxyl group in the molecule in such a way as to form an amide linkage resulting from the above aminosilane compound or derivative thereof. This material can form an ultraviolet absorbing layer and is favorably applicable to ultraviolet-absorbing glass (ultraviolet absorbing plate), optical devices and light modulators.