Optimisation of two-photon induced cleavage of molecular linker systems for drug delivery
摘要:
Photoreactive linker systems for drug delivery in modern ophthalmology are crucial for the efficiency of such applications. We compare 5 different linker molecule candidates (truxillic acid and 4 dimers of coumarin derivates) in solution regarding their chemical stability and two-photon induced cleavage efficiency, and shed light into the role of molecular structure in the cleavage reaction. Dimers of the coumarin family showed much higher two-photon induced cleavage efficiency, achieving the highest reaction cross-section when tert-Butyldimethylsilyl (TBS) was used as a substituent, being almost 5-times higher than the unsubstituted coumarin dimer. Coumarin-based linker systems react promptly with nucleophilic solvents, in particular with short chain alcohols. The polarity of such solvents which do not cause a lactone ring opening seems not to influence the cleavage of the cyclobutane ring in coumarin dimers. (C) 2010 Elsevier B.V. All rights reserved.
Acrylate coating compositions comprising a UV light cleavable cross-linking agent
申请人:Monash University
公开号:US11078368B2
公开(公告)日:2021-08-03
The present disclosure provides a coating composition for forming a coating that at least partially mobilizes in response to UV light, the composition comprising a monomer selected from acrylates, methacrylates and mixtures thereof, a cross-linking agent comprising two sub-units covalently bonded together, each sub-unit comprising an unsaturated group which is co-polymerisable with the monomer, wherein the two sub-units are adapted to dissociate in response to irradiation by UV light. The cross-linking agent may be present in the coating composition in an amount of less than 15 mol % of the total of the monomer and cross-linking agent.
ACRYLATE COATING COMPOSITIONS COMPRISING A UV LIGHT CLEAVABLE CROSS-LINKING AGENT
申请人:Monash University
公开号:US20190071574A1
公开(公告)日:2019-03-07
The present disclosure provides a coating composition for forming a coating that at least partially mobilizes in response to UV light, the composition comprising a monomer selected from acrylates, methacrylates and mixtures thereof, a cross-linking agent comprising two sub-units covalently bonded together, each sub-unit comprising an unsaturated group which is co-polymerisable with the monomer, wherein the two sub-units are adapted to dissociate in response to irradiation by UV light. The cross-linking agent may be present in the coating composition in an amount of less than 15 mol % of the total of the monomer and cross-linking agent.