Photochemistry and Photobiology Early View Online Version of Record before inclusion in an issue

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Research Articles

Synthesis and In Vitro Biological Evaluation of Psoralen‐Linked Fullerenes

Akiko Hashimoto, Takeji Takamura‐Enya, Yoshimitsu Oda

Version of Record online: 30 August 2019

 

Psoralen‐conjugated fullerenes were synthesized. Psoralen is a well‐known DNA‐binding molecule via the cross‐linking pathway with pyrimidine moiety under UVA conditions. Fullerene can damage DNA by ROS formation under UVA conditions. Combination of these properties of psoralen and fullerene were checked by DNA scission activity, ROS formation ability and genotoxicity using the bacterial detection system. One of synthesized compounds was also found to be cytotoxic to several cancer cell lines.

Research Articles

Photoacidity of the 7‐Hydroxyflavylium Cation

Amna Aqdas, Farhan Siddique, Reed Nieman, Frank H. Quina, Adelia J. A. Aquino

Version of Record online: 30 August 2019

 

A theoretical description of the photodissociation of the excited singlet state of the 7‐hydroxyflavylium cation, the fundamental chromophoric moiety of anthocyanin natural plant pigments.

Research Articles

Anticancer Photodynamic Therapy Properties of Sulfur‐Doped Graphene Quantum Dot and Methylene Blue Preparations in MCF‐7 Breast Cancer Cell Culture

Jerry D. Monroe, Ermek Belekov, Ali Oguz Er, Michael E. Smith

Version of Record online: 30 August 2019

 

Graphene quantum dots are synthesized using a laser and then characterized. MCF‐7 breast cancer cells in wells with media are treated with either graphene quantum dots, methylene blue or a 1:1 graphene quantum dot to methylene blue preparation. Wells are then irradiated with 660 nanometer red light which causes increased levels of singlet oxygen and reactive oxygen species. The methylene blue treated wells exhibit more cytotoxicity than the 1:1 combination compared to the control treatment, while the graphene quantum dot preparation does not cause significant cytotoxicity.

Special Issue Invited Reviews

Thomas J. Dougherty: An Appreciation

David Kessel

Version of Record online: 28 August 2019

Research Articles

Nano‐WO3‐SO3H as a New Photocatalyst Insight Through Covalently Grafted Brønsted Acid: Highly Efficient Selective Oxidation of Benzyl Alcohols to Aldehydes

Saber Hosseini, Ali Amoozadeh, Yasaman Akbarzadeh

Version of Record online: 26 August 2019

Nano‐WO₃‐supported sulfonic acid (nano‐WO₃‐SO₃H) has been synthesized as a new heterogeneous solid acid photocatalyst. This efficient and robust photocatalyst has been successfully applied for the selective photo‐catalytic oxidation of aromatic alcohols to the corresponding aldehydes in the presence of nitrobenzene as available industrial oxidant under blue LED irradiation.