Hedvall, J. A. published the artcilePhotoadsorption effects in the system pigment-fluid phase, Recommanded Product: 3,3-Bis(4-hydroxynaphthalen-1-yl)isobenzofuran-1(3H)-one, the publication is Arkiv foer Kemi, Mineralogi och Geologi (1943), 17A(No. 11), 11 pp., database is CAplus.
The adsorption by red and black HgS of phenolphthalein from aqueous EtOH solution and by CdS of α-naphtholphthalein from similar solutions has been investigated under varying light conditions. Light has little effect on adsorption by black HgS but red HgS adsorbs six times as much phthalein in light as in darkness. This difference is ascribed to the different electronic structures of red and black HgS. Black HgS and irradiated red HgS are conductors, whereas in darkness red HgS is an insulator. CdS adsorbs phthalein much more when irradiated than in darkness. In each case adsorption in darkness is increased by presence of excess of S in the sulfide, A parallel is drawn between these photoadsorption effects and the Becquerel or photovoltaic effect.
Arkiv foer Kemi, Mineralogi och Geologi published new progress about 596-01-0. 596-01-0 belongs to benzofurans, auxiliary class Benzofuran,Naphthalene,Alcohol,Ester, name is 3,3-Bis(4-hydroxynaphthalen-1-yl)isobenzofuran-1(3H)-one, and the molecular formula is C28H18O4, Recommanded Product: 3,3-Bis(4-hydroxynaphthalen-1-yl)isobenzofuran-1(3H)-one.
Referemce:
https://en.wikipedia.org/wiki/Benzofuran,
Benzofuran | C8H6O – PubChem