PHOTOELECTRIC CONVERSION ELEMENT, AND IMAGE SENSOR, SOLAR CELL, SINGLE COLOR DETECTION SENSOR AND FLEXIBLE SENSOR EACH OF WHICH USES SAID PHOTOELECTRIC CONVERSION ELEMENT

Method for producing a pi-electron conjugated compound

Organic electronic device containing an organic semiconductor material film which contains a leaving substituent-containing compound

Tetracycline compounds

Reversibly thermochromic compositions

Methods for synthesizing substituted tetracycline compounds