RESUME : On decrit comment I'idee est venue a A. Lallemand de combiner, dans un msme recepteur.les proprietes remarquables de la plaque photographique (grande surface. possibilite d'integration pendant un temps tres long) et les qualites de la photoclectricite (reponse lineaire, bon rapport signal sur bruit).Ainsi est nee la (G Camera electronique n. O n indique ensuite la seric de developpements qui ont et& realises en France et a I'Etranger. pendant les 50 dernieres annees, et on note les nombreuscs applications des recepteurs electronographiques a I'Astronomie. MOTS CLES : KEY WORDS : Camera elcctronique Elcctronographic Electronographie Electronographic camera Fifty years of the Lallemand electronic camera SUMMARY : Around 1934. A. Lallemand had the idea to combine. in a single instrument. the remarquable properties of the photographic plate (large surface. large integrating time) and the efficiency of the photocmission (linear response to flux, good signal to noise ratio). The first experiments are recalled. WC then describe the various developments that took place in France and other Countries during the last 50 years. We mention also the original applications of the electronographic receivers to Astronomy. FK;. 4. -Une Camera Plectronique est ins!allC.e 2 I'Ohservoroire Lick en 195Y. E l k foncrionne a11 foyer coudc' du rilescope de 3 m er ser! de rc'ceppreur pour l'ohjecrif de chamhre d'un grand specrrographe. D e gauche a droire, on voir : Maurice Duchesne. Gerald Kron. Andre Lullemand e! Merle Walker.

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A heterobifunctional reactive oxygen species (ROS)-responsive linker for directed drug assembly onto and delivery from a quantum dot (QD) nanoparticle carrier was synthesized and coupled to doxorubicin using N-(3-dimethylaminopropyl)-N′-ethylcarbodiimide hydrochloride (EDC)/sulfo–NHS coupling. The doxorubicin conjugate was characterized using 1H NMR and LC-MS and subsequently reacted under conditions of ROS formation (Cu2+/H2O2) resulting in successful and rapid thioacetal oxidative cleavage, which was monitored using 1H NMR.

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