Patent ID: 8173041

Claim:
A method for the manufacture of a zeolite L crystal comprising: preparing a mixture of N,N′-Bis(2,6-dimethylphenyl)perylene-3,4,9,10-tetracarboxylic diimide (DXP) or perylene-3,4:9,10-bis(dicarboximide) (PDI) with the zeolite L crystal, wherein the zeolite L crystal has a plurality of channels with a channel length of between 30 to 10000 nm, heating the mixture at a pressure of 10 −5 mbar to a temperature of 300° C. for DXP and 180° C. for PDI; and removing the non-intercalated chromophore from the manufactured product, wherein the zeolite L crystal has J aggregate chromophores intercalated within the plurality of channels of the zeolite L crystal.